/* roulang page: index */
:root {
            --primary: #1A73E8;
            --primary-dark: #1557B0;
            --primary-light: #E8F2FC;
            --accent: #F5A623;
            --accent-light: #FFF8EB;
            --bg: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-heading: #1F2937;
            --text-body: #4B5563;
            --text-muted: #6B7280;
            --text-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F1F3;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.10), 0 8px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12), 0 16px 40px rgba(0, 0, 0, 0.08);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --transition: 0.2s ease;
            --transition-slow: 0.3s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --container-max: 1200px;
            --section-gap: 80px;
            --section-gap-mobile: 60px;
            --card-padding: 24px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        @media (min-width: 1400px) {
            .container-custom {
                padding: 0 32px;
            }
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 16px;
            flex-wrap: nowrap;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .brand-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }
        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-cards-row {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-cards-row::-webkit-scrollbar {
            display: none;
        }
        .nav-card-item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 8px 14px;
            border-radius: 10px;
            background: var(--bg);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
            flex-shrink: 0;
        }
        .nav-card-item:hover {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
            text-decoration: none;
            border-color: rgba(26, 115, 232, 0.2);
        }
        .nav-card-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .nav-card-item.active::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-card-item i {
            font-size: 13px;
            opacity: 0.85;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-nav-cta:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
            color: #fff;
            text-decoration: none;
        }
        .btn-nav-cta:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 3px;
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            cursor: pointer;
            font-size: 20px;
            color: var(--text-heading);
            transition: all var(--transition);
        }
        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }
        @media (max-width: 991px) {
            .nav-cards-row {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px;
                gap: 8px;
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius) var(--radius);
                border-top: 1px solid var(--border-light);
                z-index: 1049;
            }
            .nav-cards-row.show {
                display: flex;
            }
            .nav-card-item {
                width: 100%;
                justify-content: flex-start;
                padding: 12px 16px;
                font-size: 15px;
                border-radius: var(--radius-sm);
            }
            .navbar-toggler-custom {
                display: block;
            }
            .header-cta {
                margin-left: auto;
            }
            .header-inner {
                flex-wrap: wrap;
                position: relative;
            }
            .brand-logo {
                font-size: 18px;
            }
            .brand-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .btn-nav-cta {
                padding: 8px 14px;
                font-size: 13px;
            }
        }
        @media (max-width: 520px) {
            .header-cta .btn-nav-cta span {
                display: none;
            }
            .btn-nav-cta {
                padding: 9px 13px;
                font-size: 13px;
                border-radius: 50%;
                width: 36px;
                height: 36px;
                justify-content: center;
            }
            .btn-nav-cta i {
                margin: 0;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 580px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            overflow: hidden;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 115, 232, 0.82) 0%, rgba(21, 87, 176, 0.88) 40%, rgba(15, 55, 110, 0.92) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            padding: 60px 20px;
            max-width: 800px;
            margin: 0 auto;
        }
        .hero-play-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.2);
            border: 3px solid rgba(255, 255, 255, 0.7);
            color: #fff;
            font-size: 28px;
            cursor: pointer;
            transition: all var(--transition-slow);
            margin-bottom: 28px;
            animation: pulse-ring 2.2s ease-out infinite;
        }
        .hero-play-btn:hover {
            background: rgba(255, 255, 255, 0.35);
            border-color: #fff;
            transform: scale(1.06);
            box-shadow: 0 0 40px rgba(255, 255, 255, 0.3);
        }
        @keyframes pulse-ring {
            0% {
                box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.45);
            }
            70% {
                box-shadow: 0 0 0 28px rgba(255, 255, 255, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
            }
        }
        .hero-title {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
            color: #fff;
        }
        .hero-subtitle {
            font-size: 18px;
            line-height: 1.7;
            margin-bottom: 30px;
            opacity: 0.93;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
            color: rgba(255, 255, 255, 0.95);
        }
        .hero-cta-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-hero-primary {
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 16px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-hero-primary:hover {
            background: #f0f4fa;
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            color: var(--primary-dark);
            text-decoration: none;
        }
        .btn-hero-outline {
            padding: 14px 32px;
            border-radius: var(--radius-sm);
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            border: 2px solid rgba(255, 255, 255, 0.7);
            cursor: pointer;
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
        }
        @media (max-width: 768px) {
            .hero-section {
                min-height: 460px;
            }
            .hero-title {
                font-size: 30px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-play-btn {
                width: 60px;
                height: 60px;
                font-size: 22px;
                border-width: 2px;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 12px 22px;
                font-size: 14px;
            }
        }

        /* ========== SECTIONS ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-gap-mobile) 0;
            }
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        /* ========== CARDS ========== */
        .card-custom {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: var(--card-padding);
            transition: all var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: #d0d7e3;
        }
        .card-custom .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px;
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .card-custom:hover .card-icon {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .card-custom h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
            line-height: 1.35;
        }
        .card-custom p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== METRIC CARDS ========== */
        .metric-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 20px 22px;
            text-align: center;
            transition: all var(--transition);
            height: 100%;
        }
        .metric-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .metric-value {
            font-size: 40px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            font-family: 'SF Mono', 'Consolas', 'PingFang SC', monospace;
        }
        .metric-label {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
            font-weight: 500;
        }
        .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            color: #10B981;
            margin-top: 4px;
        }
        .metric-trend.down {
            color: #EF4444;
        }
        .metric-icon-mini {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 18px;
            color: var(--primary);
        }

        /* ========== COMPARISON TABLE ========== */
        .compare-card {
            border-radius: var(--radius);
            padding: 28px 24px;
            height: 100%;
            transition: all var(--transition);
        }
        .compare-card.old {
            background: #F9FAFB;
            border: 2px solid #E5E7EB;
        }
        .compare-card.new {
            background: #fff;
            border: 2px solid var(--primary);
            box-shadow: var(--shadow-md);
            position: relative;
        }
        .compare-card.new::before {
            content: '推荐';
            position: absolute;
            top: -14px;
            right: 20px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.5px;
        }
        .compare-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-heading);
        }
        .compare-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .compare-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 15px;
            color: var(--text-body);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.5;
        }
        .compare-list li i {
            margin-top: 3px;
            flex-shrink: 0;
        }
        .compare-list li i.fa-check-circle {
            color: #10B981;
        }
        .compare-list li i.fa-times-circle {
            color: #EF4444;
        }
        .compare-list li i.fa-minus-circle {
            color: #9CA3AF;
        }

        /* ========== NEWS LIST ========== */
        .news-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .news-item:hover {
            background: #fafcfd;
            padding-left: 8px;
            border-radius: 6px;
        }
        .news-date-badge {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            text-align: center;
            line-height: 1.2;
        }
        .news-date-badge .day {
            font-size: 20px;
        }
        .news-date-badge .month {
            font-size: 11px;
            text-transform: uppercase;
        }
        .news-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 8px;
            line-height: 1.6;
        }
        .news-body .btn-read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            padding: 0;
            background: none;
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }
        .news-body .btn-read-more:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* ========== DEEP CONTENT ========== */
        .deep-content {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            line-height: 1.85;
            font-size: 16px;
            color: var(--text-body);
        }
        .deep-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 18px;
            line-height: 1.4;
        }
        .deep-content h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-top: 24px;
            margin-bottom: 12px;
        }
        .deep-content p {
            margin-bottom: 16px;
            text-indent: 2em;
        }
        .deep-content .highlight-box {
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 20px 0;
            font-weight: 500;
            color: var(--text-heading);
        }
        @media (max-width: 768px) {
            .deep-content {
                padding: 24px 18px;
                font-size: 15px;
            }
            .deep-content p {
                text-indent: 1.5em;
            }
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 10px;
            overflow: hidden;
            background: var(--bg-white);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .faq-accordion .accordion-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            font-size: 16px;
            color: var(--text-heading);
            background: var(--bg-white);
            padding: 18px 22px;
            border-radius: var(--radius) !important;
            transition: all var(--transition);
            box-shadow: none;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: none;
            border-bottom: 1px solid var(--border-light);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
            border-color: var(--primary);
        }
        .faq-accordion .accordion-body {
            padding: 18px 22px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.75;
            background: #fafcfd;
            border-radius: 0 0 var(--radius) var(--radius);
        }

        /* ========== GUARANTEE BAR ========== */
        .guarantee-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            text-align: center;
        }
        .guarantee-item {
            flex: 1 1 180px;
            max-width: 220px;
            padding: 20px 16px;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .guarantee-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .guarantee-item .gi-icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .guarantee-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 4px;
        }
        .guarantee-item p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
        }

        /* ========== SCREENSHOT STAGE ========== */
        .screenshot-scroll {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding: 10px 0 20px;
            scrollbar-width: thin;
            scrollbar-color: #c0c8d4 transparent;
        }
        .screenshot-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .screenshot-scroll::-webkit-scrollbar-track {
            background: transparent;
        }
        .screenshot-scroll::-webkit-scrollbar-thumb {
            background: #c0c8d4;
            border-radius: 10px;
        }
        .screenshot-frame {
            flex: 0 0 320px;
            scroll-snap-align: start;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            background: #fff;
            transition: all var(--transition);
        }
        .screenshot-frame:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .screenshot-frame img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }
        .screenshot-frame .ss-label {
            padding: 10px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-heading);
            text-align: center;
        }

        /* ========== MEDIA SCROLL ========== */
        .media-scroll {
            display: flex;
            gap: 14px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            padding: 10px 0 20px;
            scrollbar-width: thin;
            scrollbar-color: #c0c8d4 transparent;
        }
        .media-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .media-scroll::-webkit-scrollbar-track {
            background: transparent;
        }
        .media-scroll::-webkit-scrollbar-thumb {
            background: #c0c8d4;
            border-radius: 10px;
        }
        .media-card-sm {
            flex: 0 0 260px;
            scroll-snap-align: start;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
            cursor: pointer;
        }
        .media-card-sm:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .media-card-sm img {
            width: 100%;
            height: 150px;
            object-fit: cover;
        }
        .media-card-sm .mc-body {
            padding: 14px 16px;
        }
        .media-card-sm .mc-body h5 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .media-card-sm .mc-body p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== EVENT HIGHLIGHTS ========== */
        .event-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }
        .event-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 22px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .event-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .event-card .event-badge {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 700;
            background: var(--accent-light);
            color: var(--accent);
            align-self: flex-start;
        }
        .event-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.4;
        }
        .event-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }
        .event-card .btn-event {
            align-self: flex-start;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 13px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            margin-top: auto;
        }
        .event-card .btn-event:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-sm);
            color: #fff;
            text-decoration: none;
        }

        /* ========== CTA FORM ========== */
        .cta-form-wrapper {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            padding: 40px;
            max-width: 600px;
            margin: 0 auto;
            position: relative;
            overflow: hidden;
        }
        .cta-form-wrapper::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: var(--primary-light);
            opacity: 0.5;
            z-index: 0;
            pointer-events: none;
        }
        .cta-form-wrapper>* {
            position: relative;
            z-index: 1;
        }
        .cta-form-wrapper h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
            text-align: center;
        }
        .cta-form-wrapper p {
            font-size: 14px;
            color: var(--text-muted);
            text-align: center;
            margin-bottom: 24px;
        }
        .cta-form .form-control {
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            padding: 12px 16px;
            font-size: 15px;
            transition: all var(--transition);
            background: #fafcfd;
        }
        .cta-form .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.12);
            background: #fff;
        }
        .btn-cta-submit {
            width: 100%;
            padding: 14px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.5px;
        }
        .btn-cta-submit:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }
        .cta-privacy {
            font-size: 12px;
            color: var(--text-light);
            text-align: center;
            margin-top: 14px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1F2937;
            color: #c9cdd4;
            padding: 50px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #9ca3af;
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #9ca3af;
        }
        .footer-bottom a {
            color: #c9cdd4;
            font-size: 13px;
        }
        .footer-bottom a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-bottom .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== CALENDAR ========== */
        .calendar-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
            gap: 14px;
        }
        .calendar-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 18px 14px;
            text-align: center;
            transition: all var(--transition);
        }
        .calendar-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary);
        }
        .calendar-card .cal-day {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
        }
        .calendar-card .cal-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
            font-weight: 500;
        }
        .calendar-card .cal-status {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 11px;
            font-weight: 600;
            margin-top: 6px;
        }
        .cal-status.open {
            background: #D1FAE5;
            color: #065F46;
        }
        .cal-status.closed {
            background: #FEE2E2;
            color: #991B1B;
        }

        /* ========== TOPIC GRID ========== */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 20px;
        }
        .topic-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all var(--transition);
            cursor: pointer;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .topic-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .topic-card .tc-body {
            padding: 18px 20px;
        }
        .topic-card .tc-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .topic-card .tc-body p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== STEPS ========== */
        .steps-row {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .step-card {
            flex: 1 1 200px;
            max-width: 260px;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
        }
        .step-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== BRAND INTRO ========== */
        .brand-intro {
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            position: relative;
            overflow: hidden;
            color: #fff;
        }
        .brand-intro::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(31, 41, 55, 0.78);
            z-index: 1;
            border-radius: var(--radius-lg);
        }
        .brand-intro>* {
            position: relative;
            z-index: 2;
        }
        .brand-intro h3 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 16px;
            color: #fff;
        }
        .brand-intro p {
            font-size: 16px;
            line-height: 1.85;
            max-width: 700px;
            color: rgba(255, 255, 255, 0.9);
        }
        @media (max-width: 768px) {
            .brand-intro {
                padding: 32px 20px;
            }
            .brand-intro h3 {
                font-size: 20px;
            }
        }

        /* Utility */
        .bg-light-section {
            background: var(--bg-white);
        }
        .bg-primary-light-section {
            background: var(--primary-light);
            background: linear-gradient(180deg, #F0F6FC 0%, #F8FAFD 100%);
        }
        .text-accent {
            color: var(--accent);
        }
        .fw-700 {
            font-weight: 700;
        }

/* roulang page: category2 */
:root {
            --primary: #1A73E8;
            --primary-dark: #1557B0;
            --primary-light: #E8F2FC;
            --accent: #F5A623;
            --accent-light: #FFF8EB;
            --bg: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-heading: #1F2937;
            --text-body: #4B5563;
            --text-muted: #6B7280;
            --text-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F1F3;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.10), 0 8px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12), 0 16px 40px rgba(0, 0, 0, 0.08);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --transition: 0.2s ease;
            --transition-slow: 0.3s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --container-max: 1200px;
            --section-gap: 80px;
            --section-gap-mobile: 60px;
            --card-padding: 24px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 16px;
            flex-wrap: nowrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-cards-row {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-cards-row::-webkit-scrollbar {
            display: none;
        }

        .nav-card-item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 8px 14px;
            border-radius: 10px;
            background: var(--bg);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
            flex-shrink: 0;
        }

        .nav-card-item:hover {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
            text-decoration: none;
            border-color: rgba(26, 115, 232, 0.2);
        }

        .nav-card-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .nav-card-item.active::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-card-item i {
            font-size: 13px;
            opacity: 0.85;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 8px 12px;
            font-size: 20px;
            color: var(--text-heading);
            cursor: pointer;
            transition: all var(--transition);
        }

        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: wrap;
        }

        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-custom li+li::before {
            content: '/';
            color: var(--text-light);
            margin-right: 4px;
        }

        .breadcrumb-custom a {
            color: var(--text-muted);
            font-size: 14px;
        }

        .breadcrumb-custom a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .breadcrumb-custom .current {
            color: var(--text-heading);
            font-weight: 600;
        }

        /* ========== CATEGORY HERO ========== */
        .category-hero {
            background: linear-gradient(135deg, #E8F2FC 0%, #F8FAFD 40%, #FFFFFF 100%);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(26, 115, 232, 0.04);
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(245, 166, 35, 0.06);
            pointer-events: none;
        }

        .hero-inner {
            display: flex;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 1;
        }

        .hero-text {
            flex: 1;
            min-width: 0;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .hero-text h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .hero-text .hero-desc {
            font-size: 16px;
            color: var(--text-body);
            margin-bottom: 24px;
            line-height: 1.7;
            max-width: 560px;
        }

        .hero-stats-row {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .hero-stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        .hero-query-card {
            flex-shrink: 0;
            width: 380px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
        }

        .hero-query-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .hero-query-card .query-subtitle {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 18px;
        }

        .hero-query-card .form-label-sm {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-body);
            margin-bottom: 4px;
            display: block;
        }

        .hero-query-card select,
        .hero-query-card input {
            width: 100%;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-heading);
            background: var(--bg);
            transition: all var(--transition);
            margin-bottom: 12px;
            appearance: auto;
        }

        .hero-query-card select:focus,
        .hero-query-card input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
            background: #fff;
        }

        .btn-query-submit {
            width: 100%;
            padding: 12px 20px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            margin-top: 4px;
        }

        .btn-query-submit:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        /* ========== FILTER TAGS ========== */
        .filter-tags-section {
            background: var(--bg-white);
            padding: 20px 0;
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 68px;
            z-index: 40;
        }

        .filter-tags-row {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .filter-tags-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
            white-space: nowrap;
            margin-right: 4px;
        }

        .filter-tag {
            display: inline-block;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition);
            background: var(--bg);
            color: var(--text-body);
            border: 1px solid var(--border-light);
            white-space: nowrap;
        }

        .filter-tag:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(26, 115, 232, 0.3);
            text-decoration: none;
        }

        .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .filter-tag .tag-count {
            font-size: 11px;
            opacity: 0.7;
            margin-left: 3px;
        }

        /* ========== CARDS GRID SECTION ========== */
        .cards-grid-section {
            padding: var(--section-gap) 0;
            background: var(--bg);
        }

        .section-header {
            text-align: left;
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .section-header p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
        }

        .card-grid-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            height: 100%;
            display: flex;
            flex-direction: column;
            margin-bottom: 24px;
        }

        .card-grid-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(26, 115, 232, 0.2);
        }

        .card-grid-img {
            position: relative;
            width: 100%;
            height: 180px;
            overflow: hidden;
            background: #e9edf2;
        }

        .card-grid-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .card-grid-item:hover .card-grid-img img {
            transform: scale(1.04);
        }

        .card-grid-img .card-date-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0, 0, 0, 0.7);
            color: #fff;
            padding: 5px 10px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 500;
            z-index: 2;
            backdrop-filter: blur(4px);
        }

        .card-grid-img .card-cat-tag {
            position: absolute;
            bottom: 12px;
            right: 12px;
            background: var(--primary);
            color: #fff;
            padding: 4px 10px;
            border-radius: 14px;
            font-size: 11px;
            font-weight: 600;
            z-index: 2;
        }

        .card-grid-body {
            padding: 18px var(--card-padding) 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-grid-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-grid-body h3 a {
            color: var(--text-heading);
        }

        .card-grid-body h3 a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .card-grid-body .card-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 4;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-grid-body .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            transition: all var(--transition);
            align-self: flex-start;
            padding: 6px 0;
        }

        .card-grid-body .btn-read-more:hover {
            color: var(--primary-dark);
            text-decoration: none;
            gap: 8px;
        }

        .card-grid-body .btn-read-more i {
            font-size: 11px;
            transition: transform var(--transition);
        }

        .card-grid-body .btn-read-more:hover i {
            transform: translateX(3px);
        }

        /* ========== PAGINATION ========== */
        .pagination-section {
            padding: 20px 0 60px;
            background: var(--bg);
        }

        .pagination-custom {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: wrap;
        }

        .pagination-custom .page-item .page-link {
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: var(--bg-white);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
        }

        .pagination-custom .page-item .page-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(26, 115, 232, 0.3);
        }

        .pagination-custom .page-item.active .page-link {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }

        .pagination-custom .page-item.disabled .page-link {
            color: var(--text-light);
            pointer-events: none;
            background: var(--bg);
            border-color: var(--border-light);
        }

        /* ========== TAG CLOUD SECTION ========== */
        .tag-cloud-section {
            padding: 48px 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
        }

        .tag-cloud-inner {
            text-align: center;
        }

        .tag-cloud-inner h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 20px;
        }

        .tag-cloud-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            max-width: 700px;
            margin: 0 auto;
        }

        .tag-cloud-item {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 22px;
            font-size: 14px;
            font-weight: 500;
            background: var(--bg);
            color: var(--text-body);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: pointer;
        }

        .tag-cloud-item:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(26, 115, 232, 0.3);
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .tag-cloud-item.hot {
            background: var(--accent-light);
            color: #b87a10;
            border-color: rgba(245, 166, 35, 0.3);
            font-weight: 600;
        }

        /* ========== CTA SECTION ========== */
        .cta-section-alt {
            padding: 60px 0;
            background: linear-gradient(135deg, #E8F2FC 0%, #F0F6FD 50%, #F8FAFD 100%);
            position: relative;
        }

        .cta-card-wide {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 36px;
            flex-wrap: wrap;
        }

        .cta-card-wide .cta-text {
            flex: 1;
            min-width: 240px;
        }

        .cta-card-wide .cta-text h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .cta-card-wide .cta-text p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }

        .cta-card-wide .cta-form-inline {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
            min-width: 280px;
        }

        .cta-card-wide .cta-form-inline input {
            flex: 1;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-heading);
            background: var(--bg);
            transition: all var(--transition);
            min-width: 180px;
        }

        .cta-card-wide .cta-form-inline input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
            background: #fff;
        }

        .btn-cta-submit {
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-cta-submit:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .cta-privacy-note {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 6px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1F2937;
            color: #c9cdd3;
            padding: 48px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #9ca3af;
            font-size: 13px;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 12px;
            color: #9ca3af;
        }

        .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: #9ca3af;
            font-size: 12px;
        }

        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .container-custom {
                padding: 0 20px;
            }
            .hero-inner {
                flex-direction: column;
                gap: 28px;
                align-items: stretch;
            }
            .hero-query-card {
                width: 100%;
                max-width: 480px;
            }
            .hero-text h1 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-card-wide {
                flex-direction: column;
                text-align: center;
                padding: 28px 24px;
            }
            .cta-card-wide .cta-form-inline {
                width: 100%;
                max-width: 400px;
                margin: 0 auto;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            .nav-cards-row {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 12px 16px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--border-light);
                z-index: 1040;
            }
            .nav-cards-row.show {
                display: flex;
            }
            .nav-card-item {
                width: 100%;
                justify-content: flex-start;
                padding: 10px 14px;
                border-radius: var(--radius-sm);
            }
            .navbar-toggler-custom {
                display: block;
            }
            .header-cta .btn-nav-cta span {
                display: none;
            }
            .header-cta .btn-nav-cta {
                padding: 10px 14px;
                font-size: 16px;
            }
            .hero-text h1 {
                font-size: 22px;
            }
            .hero-stats-row {
                gap: 16px;
            }
            .hero-stat-num {
                font-size: 22px;
            }
            .hero-query-card {
                padding: 20px;
            }
            .filter-tags-section {
                top: 56px;
                padding: 12px 0;
            }
            .filter-tags-row {
                gap: 6px;
            }
            .filter-tag {
                padding: 5px 12px;
                font-size: 12px;
            }
            .card-grid-img {
                height: 160px;
            }
            .card-grid-body h3 {
                font-size: 15px;
            }
            .card-grid-body .card-excerpt {
                font-size: 13px;
                -webkit-line-clamp: 3;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-links {
                justify-content: center;
            }
            .cta-card-wide {
                padding: 24px 18px;
            }
            .cta-card-wide .cta-text h3 {
                font-size: 18px;
            }
            .pagination-custom .page-item .page-link {
                min-width: 34px;
                height: 34px;
                font-size: 12px;
                padding: 0 8px;
            }
            :root {
                --section-gap: 48px;
            }
        }

        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 20px;
            }
            .hero-stats-row {
                flex-direction: column;
                gap: 10px;
            }
            .card-grid-img {
                height: 140px;
            }
            .filter-tag {
                padding: 5px 10px;
                font-size: 11px;
            }
            .tag-cloud-item {
                padding: 6px 12px;
                font-size: 12px;
            }
            .cta-card-wide .cta-form-inline {
                flex-direction: column;
                min-width: auto;
            }
            .hero-query-card {
                padding: 16px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1A73E8;
            --primary-dark: #1557B0;
            --primary-light: #E8F2FC;
            --accent: #F5A623;
            --accent-light: #FFF8EB;
            --bg: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-heading: #1F2937;
            --text-body: #4B5563;
            --text-muted: #6B7280;
            --text-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F1F3;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.10), 0 8px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12), 0 16px 40px rgba(0, 0, 0, 0.08);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --transition: 0.2s ease;
            --transition-slow: 0.3s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --container-max: 1200px;
            --section-gap: 80px;
            --section-gap-mobile: 60px;
            --card-padding: 24px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            line-height: 1.3;
            margin-top: 0;
        }

        h1 {
            font-size: 32px;
            font-weight: 700;
        }
        h2 {
            font-size: 28px;
            font-weight: 600;
        }
        h3 {
            font-size: 24px;
            font-weight: 600;
        }
        h4 {
            font-size: 20px;
            font-weight: 600;
        }

        p {
            margin-top: 0;
            margin-bottom: 1rem;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 16px;
            flex-wrap: nowrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-cards-row {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-cards-row::-webkit-scrollbar {
            display: none;
        }

        .nav-card-item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 8px 14px;
            border-radius: 10px;
            background: var(--bg);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
            flex-shrink: 0;
        }

        .nav-card-item:hover {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
            text-decoration: none;
            border-color: rgba(26, 115, 232, 0.2);
        }

        .nav-card-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .nav-card-item.active::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-card-item i {
            font-size: 13px;
            opacity: 0.85;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .btn-nav-cta:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .breadcrumb-nav a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .breadcrumb-nav .separator {
            color: var(--text-light);
            font-size: 12px;
        }

        .breadcrumb-nav .current {
            color: var(--text-heading);
            font-weight: 600;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, #E8F2FC 0%, #F8FAFD 30%, #FFFFFF 70%, #FFF8EB 100%);
            padding: 64px 0 72px;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(26, 115, 232, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            display: flex;
            align-items: center;
            gap: 48px;
            position: relative;
            z-index: 2;
        }

        .hero-text {
            flex: 1;
            min-width: 0;
        }

        .hero-text .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--accent-light);
            color: var(--accent);
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }

        .hero-text h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            line-height: 1.25;
        }

        .hero-text .hero-subtitle {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 540px;
        }

        .hero-buttons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 12px 26px;
            border-radius: var(--radius-sm);
            background: transparent;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            border: 2px solid var(--primary);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-outline-custom:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            text-decoration: none;
            border-color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .hero-visual {
            flex: 0 0 420px;
            position: relative;
        }

        .hero-visual img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .hero-visual .hero-visual-badge {
            position: absolute;
            bottom: -16px;
            right: -16px;
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 14px 20px;
            box-shadow: var(--shadow-md);
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            font-size: 14px;
            color: var(--text-heading);
        }

        .hero-visual .hero-visual-badge .badge-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #22c55e;
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
            }
        }

        /* ========== SECTION TITLES ========== */
        .section-title-group {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-title-group .section-label {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-title-group h2 {
            margin-bottom: 8px;
        }

        .section-title-group .section-desc {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 600px;
            margin: 0 auto;
        }

        /* ========== STRATEGY OVERVIEW CARDS ========== */
        .overview-section {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
        }

        .overview-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .overview-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: var(--card-padding);
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
        }

        .overview-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(26, 115, 232, 0.2);
        }

        .overview-card .card-icon-circle {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 16px;
            transition: all var(--transition);
        }

        .overview-card:hover .card-icon-circle {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }

        .overview-card h3 {
            font-size: 18px;
            margin-bottom: 8px;
        }

        .overview-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* ========== TIMELINE SECTION ========== */
        .timeline-section {
            padding: var(--section-gap) 0;
            background: var(--bg);
        }

        .timeline-wrapper {
            position: relative;
            padding-left: 50px;
        }

        .timeline-wrapper::before {
            content: '';
            position: absolute;
            left: 18px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 50%, var(--border) 100%);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            margin-bottom: 36px;
            padding-left: 40px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -37px;
            top: 20px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg-white);
            box-shadow: 0 0 0 4px var(--primary-light);
            z-index: 2;
            transition: all var(--transition);
        }

        .timeline-item:hover::before {
            background: var(--accent);
            box-shadow: 0 0 0 8px var(--accent-light);
            transform: scale(1.2);
        }

        .timeline-card {
            display: flex;
            gap: 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            align-items: flex-start;
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(26, 115, 232, 0.2);
            transform: translateX(4px);
        }

        .timeline-card .tl-thumb {
            flex: 0 0 160px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            aspect-ratio: 4/3;
            background: var(--bg);
        }

        .timeline-card .tl-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .timeline-card:hover .tl-thumb img {
            transform: scale(1.05);
        }

        .timeline-card .tl-content {
            flex: 1;
            min-width: 0;
        }

        .timeline-card .tl-date {
            display: inline-block;
            font-size: 12px;
            color: var(--text-light);
            font-weight: 500;
            margin-bottom: 6px;
            background: var(--bg);
            padding: 3px 10px;
            border-radius: 4px;
        }

        .timeline-card .tl-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .timeline-card .tl-title a {
            color: var(--text-heading);
            transition: color var(--transition);
        }

        .timeline-card .tl-title a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .timeline-card .tl-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 10px;
        }

        .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            transition: all var(--transition);
            padding: 0;
            background: none;
            border: none;
            cursor: pointer;
        }

        .btn-read-more:hover {
            color: var(--primary-dark);
            gap: 8px;
            text-decoration: none;
        }

        .btn-read-more i {
            font-size: 11px;
            transition: transform var(--transition);
        }

        .btn-read-more:hover i {
            transform: translateX(3px);
        }

        /* ========== STEPS SECTION ========== */
        .steps-section {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            position: relative;
            counter-increment: step;
        }

        .step-card::before {
            content: counter(step);
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2;
        }

        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(26, 115, 232, 0.25);
        }

        .step-card .step-icon {
            font-size: 32px;
            color: var(--primary);
            margin-bottom: 14px;
            margin-top: 8px;
        }

        .step-card h4 {
            font-size: 16px;
            margin-bottom: 6px;
        }

        .step-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }

        /* ========== SCENARIO SECTION ========== */
        .scenario-section {
            padding: var(--section-gap) 0;
            background: var(--bg);
        }

        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .scenario-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: var(--card-padding);
            border: 1px solid var(--border-light);
            display: flex;
            gap: 18px;
            align-items: flex-start;
            transition: all var(--transition-slow);
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(26, 115, 232, 0.2);
            transform: translateY(-2px);
        }

        .scenario-card .sc-icon {
            flex: 0 0 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--primary);
        }

        .scenario-card .sc-info h4 {
            font-size: 16px;
            margin-bottom: 4px;
        }

        .scenario-card .sc-info p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 0;
            line-height: 1.5;
        }

        /* ========== COMPARISON SECTION ========== */
        .comparison-section {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
        }

        .comparison-dual {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            max-width: 900px;
            margin: 0 auto;
        }

        .comparison-card {
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all var(--transition-slow);
        }

        .comparison-card.negative {
            background: #fef2f2;
            border: 2px solid #fecaca;
        }

        .comparison-card.positive {
            background: #f0fdf4;
            border: 2px solid #bbf7d0;
        }

        .comparison-card h3 {
            font-size: 20px;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .comparison-card.negative h3 {
            color: #dc2626;
        }
        .comparison-card.positive h3 {
            color: #16a34a;
        }

        .comparison-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .comparison-card ul li {
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-body);
            display: flex;
            align-items: flex-start;
            gap: 8px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .comparison-card ul li:last-child {
            border-bottom: none;
        }

        .comparison-card ul li i {
            margin-top: 3px;
            flex-shrink: 0;
        }

        .comparison-card.negative ul li i {
            color: #ef4444;
        }
        .comparison-card.positive ul li i {
            color: #22c55e;
        }

        /* ========== FAQ SECTION ========== */
        .faq-section {
            padding: var(--section-gap) 0;
            background: var(--bg);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-slow);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            background: none;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            text-align: left;
            transition: all var(--transition);
            gap: 12px;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: -2px;
            border-radius: var(--radius);
        }

        .faq-question .faq-arrow {
            flex-shrink: 0;
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition-slow);
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
        }

        .cta-card {
            background: linear-gradient(135deg, #E8F2FC 0%, #FFFFFF 50%, #FFF8EB 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            background: radial-gradient(circle, rgba(26, 115, 232, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-card h2 {
            position: relative;
            z-index: 1;
            margin-bottom: 8px;
        }

        .cta-card .cta-desc {
            position: relative;
            z-index: 1;
            color: var(--text-muted);
            margin-bottom: 24px;
            font-size: 15px;
        }

        .cta-form {
            position: relative;
            z-index: 1;
            display: flex;
            gap: 10px;
            max-width: 500px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 2px solid var(--border);
            font-size: 15px;
            transition: all var(--transition);
            background: var(--bg-white);
        }

        .cta-form input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(26, 115, 232, 0.1);
        }

        .cta-form .btn-submit {
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .cta-form .btn-submit:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .cta-privacy {
            position: relative;
            z-index: 1;
            font-size: 12px;
            color: var(--text-light);
            margin-top: 12px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1F2937;
            color: #d1d5db;
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            margin-bottom: 16px;
            font-weight: 600;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #9ca3af;
            font-size: 14px;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-col p {
            font-size: 13px;
            color: #9ca3af;
            margin-bottom: 10px;
        }

        .footer-col input[type="email"] {
            flex: 1;
            padding: 9px 12px;
            border-radius: 6px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 13px;
        }

        .footer-col input[type="email"]::placeholder {
            color: #9ca3af;
        }

        .footer-col input[type="email"]:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.2);
        }

        .footer-col button {
            padding: 9px 14px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            font-size: 13px;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--transition);
        }

        .footer-col button:hover {
            background: var(--primary-dark);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            gap: 12px;
            font-size: 13px;
            color: #9ca3af;
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: #9ca3af;
            font-size: 13px;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .hero-visual {
                flex: 0 0 320px;
            }
            .hero-text h1 {
                font-size: 30px;
            }
            .overview-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline-card {
                flex-direction: column;
            }
            .timeline-card .tl-thumb {
                flex: 0 0 auto;
                width: 100%;
                aspect-ratio: 16/9;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 20px;
            }
            .header-inner {
                flex-wrap: wrap;
                gap: 10px;
            }
            .nav-cards-row {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                padding: 8px 0;
                gap: 4px;
            }
            .nav-card-item {
                padding: 6px 10px;
                font-size: 12px;
                gap: 4px;
            }
            .nav-card-item i {
                font-size: 11px;
            }
            .header-cta {
                order: 2;
            }
            .navbar-toggler-custom {
                display: block;
                order: 2;
            }
            .nav-cards-row.collapsed-mobile {
                display: none;
            }
            .nav-cards-row.expanded-mobile {
                display: flex;
                flex-wrap: wrap;
            }
            .hero-inner {
                flex-direction: column;
                gap: 28px;
            }
            .hero-visual {
                flex: 0 0 auto;
                width: 100%;
                max-width: 400px;
            }
            .hero-text h1 {
                font-size: 26px;
            }
            .hero-text .hero-subtitle {
                font-size: 15px;
            }
            .overview-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .comparison-dual {
                grid-template-columns: 1fr;
            }
            .timeline-wrapper {
                padding-left: 36px;
            }
            .timeline-wrapper::before {
                left: 13px;
            }
            .timeline-item {
                padding-left: 28px;
            }
            .timeline-item::before {
                left: -28px;
                width: 11px;
                height: 11px;
            }
            .timeline-card {
                flex-direction: column;
                padding: 16px;
            }
            .timeline-card .tl-thumb {
                width: 100%;
                aspect-ratio: 16/9;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .cta-card {
                padding: 32px 20px;
            }
            .cta-form {
                flex-direction: column;
            }
            :root {
                --section-gap: 60px;
            }
        }

        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 22px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .timeline-wrapper {
                padding-left: 28px;
            }
            .timeline-wrapper::before {
                left: 10px;
                width: 2px;
            }
            .timeline-item {
                padding-left: 22px;
                margin-bottom: 24px;
            }
            .timeline-item::before {
                left: -22px;
                width: 9px;
                height: 9px;
                top: 16px;
            }
            .timeline-card .tl-title {
                font-size: 15px;
            }
            .timeline-card .tl-excerpt {
                font-size: 13px;
            }
            .nav-card-item {
                font-size: 11px;
                padding: 5px 8px;
            }
            .btn-nav-cta span {
                display: none;
            }
            .btn-nav-cta {
                padding: 10px 14px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1A73E8;
            --primary-dark: #1557B0;
            --primary-light: #E8F2FC;
            --accent: #F5A623;
            --accent-light: #FFF8EB;
            --bg: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-heading: #1F2937;
            --text-body: #4B5563;
            --text-muted: #6B7280;
            --text-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F1F3;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.10), 0 8px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12), 0 16px 40px rgba(0, 0, 0, 0.08);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --transition: 0.2s ease;
            --transition-slow: 0.3s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --container-max: 1200px;
            --section-gap: 80px;
            --section-gap-mobile: 60px;
            --card-padding: 24px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 16px;
            flex-wrap: nowrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-cards-row {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-cards-row::-webkit-scrollbar {
            display: none;
        }

        .nav-card-item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 8px 14px;
            border-radius: 10px;
            background: var(--bg);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
            flex-shrink: 0;
        }

        .nav-card-item:hover {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
            text-decoration: none;
            border-color: rgba(26, 115, 232, 0.2);
        }

        .nav-card-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .nav-card-item.active::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-card-item i {
            font-size: 13px;
            opacity: 0.85;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .btn-nav-cta i {
            font-size: 14px;
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

        .navbar-toggler-custom:hover {
            background: var(--primary-light);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-custom li+li::before {
            content: '\f054';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 10px;
            color: var(--text-light);
            margin-right: 2px;
        }

        .breadcrumb-custom a {
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .breadcrumb-custom a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .breadcrumb-custom .current {
            color: var(--text-heading);
            font-weight: 600;
        }

        /* ========== CATEGORY HERO ========== */
        .category-hero {
            background: linear-gradient(135deg, #E8F2FC 0%, #F0F6FD 30%, #F8FAFD 60%, #FFFFFF 100%);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(26, 115, 232, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .category-hero-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .category-hero-text {
            flex: 1;
            min-width: 280px;
        }

        .category-hero-text h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            line-height: 1.3;
            position: relative;
        }

        .category-hero-text h1 .highlight {
            color: var(--primary);
            position: relative;
        }

        .category-hero-text .hero-desc {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 20px;
            max-width: 620px;
        }

        .category-hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .hero-stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            background: var(--bg-white);
            padding: 14px 20px;
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }

        .hero-stat-item .stat-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }

        .hero-stat-item .stat-info .stat-num {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            font-family: 'SF Mono', 'Consolas', 'PingFang SC', 'Microsoft YaHei', monospace;
        }

        .hero-stat-item .stat-info .stat-label {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.3;
        }

        .category-hero-image {
            flex-shrink: 0;
            width: 340px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .category-hero-image img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            display: block;
        }

        .category-hero-image .img-overlay-badge {
            position: absolute;
            bottom: 16px;
            right: 16px;
            background: rgba(31, 41, 55, 0.85);
            color: #fff;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

        /* ========== TAG CLOUD SECTION ========== */
        .tag-cloud-section {
            padding: 28px 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
        }

        .tag-cloud-inner {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .tag-cloud-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
            white-space: nowrap;
            margin-right: 4px;
        }

        .tag-pill {
            display: inline-block;
            padding: 7px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            background: var(--bg);
            color: var(--text-body);
            border: 1px solid var(--border-light);
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .tag-pill:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(26, 115, 232, 0.3);
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .tag-pill.active-tag {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        /* ========== MAIN LIST SECTION ========== */
        .main-list-section {
            padding: var(--section-gap) 0;
            background: var(--bg);
        }

        .section-header-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 36px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .section-header-bar h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin: 0;
            position: relative;
            padding-left: 16px;
        }

        .section-header-bar h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 28px;
            background: var(--primary);
            border-radius: 2px;
        }

        .section-header-bar .sort-options {
            display: flex;
            gap: 4px;
            background: var(--bg-white);
            border-radius: var(--radius-sm);
            padding: 4px;
            border: 1px solid var(--border-light);
        }

        .sort-option {
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-muted);
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            background: transparent;
            white-space: nowrap;
        }

        .sort-option:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .sort-option.active-sort {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }

        /* Staggered list items */
        .staggered-list {
            display: flex;
            flex-direction: column;
            gap: 32px;
        }

        .staggered-item {
            display: flex;
            flex-direction: row;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            gap: 0;
        }

        .staggered-item:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: rgba(26, 115, 232, 0.15);
        }

        .staggered-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .staggered-item-image {
            flex: 0 0 44%;
            min-width: 300px;
            position: relative;
            overflow: hidden;
            background: #f0f4f8;
        }

        .staggered-item-image img {
            width: 100%;
            height: 100%;
            min-height: 280px;
            object-fit: cover;
            display: block;
            transition: transform 0.5s ease;
        }

        .staggered-item:hover .staggered-item-image img {
            transform: scale(1.04);
        }

        .staggered-item-image .image-date-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(31, 41, 55, 0.82);
            color: #fff;
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 12px;
            font-weight: 600;
            line-height: 1.3;
            text-align: center;
            backdrop-filter: blur(4px);
            pointer-events: none;
            z-index: 2;
        }

        .staggered-item-image .image-date-badge .day {
            display: block;
            font-size: 22px;
            font-weight: 700;
            line-height: 1;
        }

        .staggered-item-content {
            flex: 1;
            padding: 32px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 14px;
            min-width: 260px;
        }

        .staggered-item-content .item-category-tag {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 14px;
            font-size: 12px;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
            width: fit-content;
            letter-spacing: 0.3px;
        }

        .staggered-item-content h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.35;
            margin: 0;
        }

        .staggered-item-content h3 a {
            color: var(--text-heading);
            transition: color var(--transition);
        }

        .staggered-item-content h3 a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .staggered-item-content .item-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .staggered-item-content .item-meta i {
            color: var(--text-light);
            margin-right: 4px;
        }

        .staggered-item-content .item-excerpt {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
            margin: 0;
        }

        .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: transparent;
            border: 1.5px solid var(--primary);
            cursor: pointer;
            transition: all var(--transition);
            width: fit-content;
            white-space: nowrap;
        }

        .btn-read-more:hover {
            background: var(--primary);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .btn-read-more i {
            transition: transform var(--transition);
        }

        .btn-read-more:hover i {
            transform: translateX(4px);
        }

        /* ========== TOOLS RECOMMEND SECTION ========== */
        .tools-recommend-section {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
        }

        .tools-recommend-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }

        .tools-recommend-section .section-title h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .tools-recommend-section .section-title p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
        }

        .tools-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .tool-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            cursor: pointer;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
        }

        .tool-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(26, 115, 232, 0.2);
            background: #fff;
        }

        .tool-card .tool-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            transition: all var(--transition);
        }

        .tool-card:hover .tool-icon-circle {
            background: var(--primary);
            color: #fff;
            transform: scale(1.08);
        }

        .tool-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin: 0;
        }

        .tool-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== STATS HIGHLIGHT SECTION ========== */
        .stats-highlight-section {
            padding: var(--section-gap) 0;
            background: linear-gradient(180deg, #F0F6FD 0%, #F8FAFD 100%);
        }

        .stats-highlight-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }

        .stats-highlight-section .section-title h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .stats-highlight-section .section-title p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
        }

        .stats-cards-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card-mini {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .stat-card-mini:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .stat-card-mini .mini-stat-num {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            font-family: 'SF Mono', 'Consolas', 'PingFang SC', 'Microsoft YaHei', monospace;
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .stat-card-mini .mini-stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .stat-card-mini .mini-stat-icon {
            font-size: 28px;
            color: var(--accent);
            margin-bottom: 8px;
        }

        /* ========== TESTIMONIAL SECTION ========== */
        .testimonial-section {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
        }

        .testimonial-section .section-title {
            text-align: center;
            margin-bottom: 40px;
        }

        .testimonial-section .section-title h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .testimonial-section .section-title p {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
        }

        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 28px 24px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }

        .testimonial-card::before {
            content: '\f10d';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 28px;
            color: var(--primary-light);
            position: absolute;
            top: 16px;
            right: 20px;
            opacity: 0.6;
            pointer-events: none;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        .testimonial-card .testimonial-text {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }

        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-card .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }

        .testimonial-card .author-info .author-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
        }

        .testimonial-card .author-info .author-role {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ========== CTA SECTION ========== */
        .cta-subscribe-section {
            padding: var(--section-gap) 0;
            background: linear-gradient(135deg, #1A73E8 0%, #1557B0 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-subscribe-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-subscribe-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(245, 166, 35, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .cta-form-row {
            display: flex;
            gap: 10px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-form-row input {
            flex: 1;
            min-width: 240px;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            border: 2px solid transparent;
            font-size: 15px;
            background: rgba(255, 255, 255, 0.95);
            color: var(--text-heading);
            outline: none;
            transition: all var(--transition);
        }

        .cta-form-row input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(245, 166, 35, 0.2);
            background: #fff;
        }

        .cta-form-row .btn-cta-submit {
            padding: 14px 28px;
            border-radius: var(--radius-sm);
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .cta-form-row .btn-cta-submit:hover {
            background: #e6951a;
            box-shadow: 0 6px 20px rgba(245, 166, 35, 0.4);
            transform: translateY(-2px);
        }

        .cta-privacy-note {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 14px;
        }

        /* ========== PAGINATION ========== */
        .pagination-section {
            padding: 32px 0 56px;
            background: var(--bg);
            display: flex;
            justify-content: center;
        }

        .pagination-custom {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: wrap;
            justify-content: center;
        }

        .pagination-custom .page-item .page-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: var(--bg-white);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
        }

        .pagination-custom .page-item .page-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(26, 115, 232, 0.3);
            text-decoration: none;
        }

        .pagination-custom .page-item.active .page-link {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 700;
            box-shadow: var(--shadow-sm);
        }

        .pagination-custom .page-item.disabled .page-link {
            color: var(--text-light);
            pointer-events: none;
            background: var(--bg);
            border-color: var(--border-light);
        }

        .pagination-custom .page-nav-prev .page-link,
        .pagination-custom .page-nav-next .page-link {
            width: auto;
            padding: 0 16px;
            gap: 4px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1F2937;
            color: #cbd5e1;
            padding: 48px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #cbd5e1;
            font-size: 13px;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 12px;
            color: #9ca3af;
        }

        .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: #9ca3af;
            font-size: 12px;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-cards-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .staggered-item-image {
                flex: 0 0 38%;
                min-width: 220px;
            }
            .staggered-item-image img {
                min-height: 240px;
            }
            .staggered-item-content {
                padding: 24px 20px;
            }
            .staggered-item-content h3 {
                font-size: 19px;
            }
            .category-hero-image {
                width: 260px;
            }
            .category-hero-image img {
                height: 200px;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .nav-cards-row {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--border-light);
                z-index: 1040;
                gap: 4px;
            }
            .nav-cards-row.show {
                display: flex;
            }
            .nav-card-item {
                width: 100%;
                justify-content: flex-start;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .header-cta {
                display: none;
            }
            .header-inner {
                flex-wrap: wrap;
            }
            .category-hero-inner {
                flex-direction: column;
                gap: 24px;
            }
            .category-hero-image {
                width: 100%;
                max-width: 400px;
            }
            .category-hero-image img {
                height: 200px;
            }
            .category-hero-stats {
                gap: 12px;
            }
            .hero-stat-item {
                padding: 10px 14px;
            }
            .hero-stat-item .stat-icon {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .hero-stat-item .stat-info .stat-num {
                font-size: 20px;
            }
            .staggered-item {
                flex-direction: column !important;
            }
            .staggered-item-image {
                flex: 0 0 auto;
                min-width: 100%;
                max-height: 220px;
            }
            .staggered-item-image img {
                min-height: 200px;
                max-height: 220px;
            }
            .staggered-item-content {
                padding: 20px 16px;
            }
            .staggered-item-content h3 {
                font-size: 18px;
            }
            .tools-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stats-cards-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .section-header-bar {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-form-row {
                flex-direction: column;
            }
            .cta-form-row input {
                min-width: 100%;
            }
            .pagination-custom .page-item .page-link {
                width: 36px;
                height: 36px;
                font-size: 13px;
            }
            :root {
                --section-gap: 60px;
            }
        }

        @media (max-width: 520px) {
            .tools-grid {
                grid-template-columns: 1fr;
            }
            .stats-cards-row {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-links {
                justify-content: center;
            }
            .category-hero-text h1 {
                font-size: 26px;
            }
            .category-hero-stats {
                flex-direction: column;
                gap: 8px;
            }
            .hero-stat-item {
                width: 100%;
            }
            .tag-cloud-inner {
                gap: 6px;
            }
            .tag-pill {
                padding: 5px 12px;
                font-size: 12px;
            }
            .staggered-item-image img {
                min-height: 160px;
                max-height: 180px;
            }
            .staggered-item-content {
                padding: 16px 14px;
                gap: 10px;
            }
            .staggered-item-content h3 {
                font-size: 16px;
            }
            .staggered-item-content .item-excerpt {
                font-size: 13px;
            }
            .btn-read-more {
                padding: 8px 16px;
                font-size: 13px;
            }
            .pagination-custom .page-nav-prev .page-link,
            .pagination-custom .page-nav-next .page-link {
                padding: 0 10px;
                font-size: 12px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1A73E8;
            --primary-dark: #1557B0;
            --primary-light: #E8F2FC;
            --accent: #F5A623;
            --accent-light: #FFF8EB;
            --bg: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-heading: #1F2937;
            --text-body: #4B5563;
            --text-muted: #6B7280;
            --text-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F1F3;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.10), 0 8px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12), 0 16px 40px rgba(0, 0, 0, 0.08);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --transition: 0.2s ease;
            --transition-slow: 0.3s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --container-max: 1200px;
            --section-gap: 80px;
            --section-gap-mobile: 60px;
            --card-padding: 24px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--text-heading);
            font-weight: 700;
            line-height: 1.3;
        }

        h1 {
            font-size: 32px;
        }

        h2 {
            font-size: 28px;
            font-weight: 600;
        }

        h3 {
            font-size: 24px;
            font-weight: 600;
        }

        h4 {
            font-size: 20px;
            font-weight: 600;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 16px;
            flex-wrap: nowrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-cards-row {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-cards-row::-webkit-scrollbar {
            display: none;
        }

        .nav-card-item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 8px 14px;
            border-radius: 10px;
            background: var(--bg);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
            flex-shrink: 0;
        }

        .nav-card-item:hover {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
            text-decoration: none;
            border-color: rgba(26, 115, 232, 0.2);
        }

        .nav-card-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .nav-card-item.active::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-card-item i {
            font-size: 13px;
            opacity: 0.85;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 12px 0;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb-nav a {
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .breadcrumb-nav a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .breadcrumb-nav .separator {
            color: var(--text-light);
        }

        .breadcrumb-nav .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ========== PAGE HERO ========== */
        .page-hero {
            background: linear-gradient(135deg, #E8F2FC 0%, #F8FAFD 40%, #FFFFFF 100%);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border-light);
        }

        .page-hero .hero-content {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .page-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

        .page-hero .hero-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.6;
            max-width: 650px;
            margin: 0 auto;
        }

        .page-hero .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        /* ========== STRATEGY TAG FILTER ========== */
        .tag-filter-section {
            padding: 28px 0 0;
        }

        .tag-filter-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }

        .tag-filter-btn {
            padding: 8px 18px;
            border-radius: 20px;
            border: 1px solid var(--border);
            background: var(--bg-white);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .tag-filter-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .tag-filter-btn.active-tag {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
        }

        .tag-filter-btn .tag-count {
            font-size: 11px;
            opacity: 0.7;
            margin-left: 4px;
        }

        /* ========== TIMELINE SECTION ========== */
        .timeline-section {
            padding: 56px 0 64px;
            background: var(--bg);
        }

        .timeline-wrapper {
            position: relative;
            max-width: 960px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .timeline-line {
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 3px;
            background: linear-gradient(to bottom, var(--primary-light), var(--primary), var(--primary-light));
            transform: translateX(-50%);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            display: flex;
            align-items: flex-start;
            margin-bottom: 48px;
            width: 100%;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item-left {
            flex-direction: row;
            justify-content: flex-start;
        }

        .timeline-item-right {
            flex-direction: row-reverse;
            justify-content: flex-start;
        }

        .timeline-dot {
            position: absolute;
            left: 50%;
            top: 28px;
            width: 16px;
            height: 16px;
            background: var(--primary);
            border-radius: 50%;
            transform: translate(-50%, -50%);
            z-index: 2;
            border: 3px solid #fff;
            box-shadow: 0 0 0 4px var(--primary-light);
            transition: all var(--transition);
        }

        .timeline-item:hover .timeline-dot {
            background: var(--accent);
            box-shadow: 0 0 0 6px var(--accent-light);
            transform: translate(-50%, -50%) scale(1.2);
        }

        .timeline-card {
            width: 44%;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            border: 1px solid var(--border-light);
            position: relative;
            z-index: 1;
        }

        .timeline-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary-light);
        }

        .timeline-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            height: 180px;
            background: #f0f4f8;
        }

        .timeline-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .timeline-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .timeline-card .card-date-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            padding: 5px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 600;
            z-index: 2;
            letter-spacing: 0.3px;
        }

        .timeline-card .card-body-custom {
            padding: 18px 20px 20px;
        }

        .timeline-card .card-body-custom h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-heading);
            line-height: 1.4;
        }

        .timeline-card .card-body-custom h3 a {
            color: var(--text-heading);
            transition: color var(--transition);
        }

        .timeline-card .card-body-custom h3 a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .timeline-card .card-body-custom .card-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .timeline-card .card-body-custom .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            padding: 6px 0;
            transition: all var(--transition);
            border: none;
            background: none;
            cursor: pointer;
        }

        .timeline-card .card-body-custom .btn-read-more:hover {
            color: var(--primary-dark);
            gap: 10px;
            text-decoration: none;
        }

        .timeline-card .card-body-custom .btn-read-more i {
            font-size: 11px;
            transition: transform var(--transition);
        }

        .timeline-card:hover .card-body-custom .btn-read-more i {
            transform: translateX(3px);
        }

        .timeline-meta-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 8px;
        }

        .timeline-meta-tags .meta-tag {
            font-size: 11px;
            padding: 3px 10px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 500;
        }

        /* ========== PAGINATION ========== */
        .pagination-section {
            padding: 20px 0 60px;
            text-align: center;
        }

        .pagination-custom {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .pagination-custom .page-item {
            list-style: none;
        }

        .pagination-custom .page-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            background: var(--bg-white);
            color: var(--text-body);
            font-weight: 500;
            font-size: 14px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
        }

        .pagination-custom .page-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
            text-decoration: none;
        }

        .pagination-custom .page-link.active-page {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 700;
            pointer-events: none;
        }

        .pagination-custom .page-link.disabled-link {
            color: var(--text-light);
            pointer-events: none;
            opacity: 0.5;
        }

        /* ========== FEATURED STRATEGY CARDS ========== */
        .featured-strategies {
            padding: 56px 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
        }

        .featured-strategies .section-title {
            text-align: center;
            margin-bottom: 36px;
        }

        .featured-strategies .section-title h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
        }

        .featured-strategies .section-title p {
            color: var(--text-muted);
            font-size: 15px;
            margin-top: 6px;
        }

        .strategy-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .strategy-featured-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            text-align: center;
        }

        .strategy-featured-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--primary-light);
        }

        .strategy-featured-card .card-icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 22px;
            color: var(--primary);
            transition: all var(--transition);
        }

        .strategy-featured-card:hover .card-icon-circle {
            background: var(--primary);
            color: #fff;
        }

        .strategy-featured-card h4 {
            font-size: 17px;
            margin-bottom: 8px;
            color: var(--text-heading);
        }

        .strategy-featured-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 0;
        }

        /* ========== TOOLS RESOURCE ========== */
        .tools-resource-section {
            padding: 56px 0;
            background: var(--bg);
        }

        .tools-resource-section .section-title {
            text-align: center;
            margin-bottom: 36px;
        }

        .tools-resource-section .section-title h2 {
            font-size: 26px;
            font-weight: 700;
        }

        .tools-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .tool-card-mini {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 20px 16px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .tool-card-mini:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }

        .tool-card-mini .tool-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .tool-card-mini h5 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-heading);
        }

        .tool-card-mini p {
            font-size: 12px;
            color: var(--text-muted);
            margin: 0;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 56px 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
        }

        .faq-section .section-title {
            text-align: center;
            margin-bottom: 36px;
        }

        .faq-section .section-title h2 {
            font-size: 26px;
            font-weight: 700;
        }

        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg);
            border-radius: var(--radius);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            padding: 18px 20px;
            text-align: left;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all var(--transition);
            gap: 12px;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform var(--transition-slow);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-item.open {
            border-color: var(--primary-light);
            background: #fafcff;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 56px 0;
            background: linear-gradient(135deg, #E8F2FC 0%, #F0F6FD 50%, #FFFFFF 100%);
        }

        .cta-card {
            max-width: 700px;
            margin: 0 auto;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 40px 36px;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
        }

        .cta-card h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-heading);
        }

        .cta-card p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 20px;
        }

        .cta-form-group {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto 10px;
        }

        .cta-form-group input {
            flex: 1;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 14px;
            transition: all var(--transition);
            background: var(--bg);
        }

        .cta-form-group input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
        }

        .btn-cta-submit {
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-cta-submit:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .cta-privacy-note {
            font-size: 12px;
            color: var(--text-light);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1F2937;
            color: #d1d5db;
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #9ca3af;
            font-size: 14px;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 13px;
            color: #9ca3af;
            gap: 12px;
        }

        .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: #9ca3af;
            font-size: 13px;
            transition: color var(--transition);
        }

        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .container-custom {
                padding: 0 20px;
            }
            .nav-cards-row {
                gap: 4px;
            }
            .nav-card-item {
                padding: 7px 10px;
                font-size: 12px;
                gap: 5px;
            }
            .nav-card-item i {
                font-size: 11px;
            }
            .strategy-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline-card {
                width: 42%;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            .header-inner {
                flex-wrap: wrap;
                gap: 10px;
            }
            .navbar-toggler-custom {
                display: block;
                order: 3;
            }
            .nav-cards-row {
                display: none;
                order: 4;
                width: 100%;
                flex-direction: column;
                background: var(--bg-white);
                border-radius: var(--radius);
                padding: 8px;
                box-shadow: var(--shadow-md);
                border: 1px solid var(--border-light);
            }
            .nav-cards-row.show {
                display: flex;
            }
            .nav-card-item {
                width: 100%;
                justify-content: flex-start;
                padding: 10px 14px;
                font-size: 14px;
            }
            .header-cta {
                order: 2;
                margin-left: auto;
            }
            .brand-logo {
                order: 1;
            }
            .timeline-line {
                left: 20px;
                transform: none;
            }
            .timeline-dot {
                left: 20px;
                transform: translate(-50%, -50%);
            }
            .timeline-item {
                flex-direction: row !important;
                justify-content: flex-start !important;
                padding-left: 48px;
            }
            .timeline-card {
                width: 100%;
            }
            .timeline-item:hover .timeline-dot {
                transform: translate(-50%, -50%) scale(1.2);
            }
            .strategy-cards-grid {
                grid-template-columns: 1fr;
            }
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-form-group {
                flex-direction: column;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .footer-links {
                justify-content: center;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            h2 {
                font-size: 22px;
            }
            .section-gap {
                margin-bottom: var(--section-gap-mobile);
            }
            .timeline-card .card-img-wrap {
                height: 140px;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 12px;
            }
            .brand-logo {
                font-size: 18px;
            }
            .brand-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .page-hero {
                padding: 32px 0 28px;
            }
            .page-hero h1 {
                font-size: 22px;
            }
            .page-hero .hero-subtitle {
                font-size: 14px;
            }
            .timeline-card .card-img-wrap {
                height: 120px;
            }
            .timeline-card .card-body-custom h3 {
                font-size: 15px;
            }
            .timeline-card .card-body-custom .card-excerpt {
                font-size: 13px;
            }
            .tools-grid {
                grid-template-columns: 1fr;
            }
            .tag-filter-btn {
                font-size: 12px;
                padding: 6px 12px;
            }
            .pagination-custom .page-link {
                min-width: 34px;
                height: 34px;
                font-size: 12px;
                padding: 0 8px;
            }
            .cta-card {
                padding: 28px 18px;
            }
            .cta-card h3 {
                font-size: 20px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1A73E8;
            --primary-dark: #1557B0;
            --primary-light: #E8F2FC;
            --accent: #F5A623;
            --accent-light: #FFF8EB;
            --bg: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-heading: #1F2937;
            --text-body: #4B5563;
            --text-muted: #6B7280;
            --text-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F1F3;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.10), 0 8px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12), 0 16px 40px rgba(0, 0, 0, 0.08);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --transition: 0.2s ease;
            --transition-slow: 0.3s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --container-max: 1200px;
            --section-gap: 80px;
            --section-gap-mobile: 60px;
            --card-padding: 24px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 16px;
            flex-wrap: nowrap;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .brand-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }
        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-cards-row {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-cards-row::-webkit-scrollbar {
            display: none;
        }
        .nav-card-item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 8px 14px;
            border-radius: 10px;
            background: var(--bg);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
            flex-shrink: 0;
        }
        .nav-card-item:hover {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
            text-decoration: none;
            border-color: rgba(26, 115, 232, 0.2);
        }
        .nav-card-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            position: relative;
        }
        .nav-card-item.active::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-card-item i {
            font-size: 13px;
            opacity: 0.85;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
        }
        .navbar-toggler-custom:hover {
            background: var(--bg);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: wrap;
        }
        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb-custom li+li::before {
            content: '/';
            color: var(--text-light);
            font-size: 13px;
        }
        .breadcrumb-custom a {
            color: var(--text-muted);
            font-size: 14px;
        }
        .breadcrumb-custom a:hover {
            color: var(--primary);
        }
        .breadcrumb-custom .current {
            color: var(--text-heading);
            font-weight: 600;
        }

        /* ========== CATEGORY HERO ========== */
        .category-hero {
            background: linear-gradient(135deg, #E8F2FC 0%, #F0F6FD 40%, #F8FAFD 100%);
            padding: 56px 0 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(26, 115, 232, 0.04);
            pointer-events: none;
        }
        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(245, 166, 35, 0.05);
            pointer-events: none;
        }
        .category-hero .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 14px;
            line-height: 1.3;
            position: relative;
            z-index: 1;
        }
        .category-hero .hero-subtitle {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }
        .category-hero .hero-stats-row {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-top: 28px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .stat-num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .hero-stat-item .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ========== MAIN CONTENT LAYOUT ========== */
        .main-content-section {
            padding: 48px 0 var(--section-gap);
        }
        .content-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 40px;
            align-items: start;
        }

        /* ========== FILTER TAGS ========== */
        .filter-tags-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 32px;
            padding: 20px 24px;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .filter-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            border-radius: 24px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all var(--transition);
            background: var(--bg);
            color: var(--text-body);
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .filter-tag:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(26, 115, 232, 0.25);
        }
        .filter-tag.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .filter-tag .tag-count {
            font-size: 11px;
            opacity: 0.75;
            background: rgba(255, 255, 255, 0.2);
            padding: 2px 8px;
            border-radius: 10px;
        }
        .filter-tag.active .tag-count {
            background: rgba(255, 255, 255, 0.3);
        }

        /* ========== ARTICLE LIST ITEMS ========== */
        .article-list-container {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .article-list-item {
            display: flex;
            gap: 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .article-list-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: rgba(26, 115, 232, 0.15);
        }
        .article-list-thumb {
            flex-shrink: 0;
            width: 180px;
            height: 130px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--bg);
            position: relative;
        }
        .article-list-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .article-list-item:hover .article-list-thumb img {
            transform: scale(1.05);
        }
        .article-list-thumb .thumb-tag {
            position: absolute;
            top: 10px;
            left: 10px;
            padding: 4px 10px;
            border-radius: 14px;
            font-size: 11px;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            z-index: 2;
        }
        .article-list-body {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .article-list-body .article-date {
            font-size: 13px;
            color: var(--text-light);
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .article-list-body .article-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.4;
            margin: 0;
        }
        .article-list-body .article-title a {
            color: var(--text-heading);
        }
        .article-list-body .article-title a:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .article-list-body .article-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-list-body .article-meta-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: auto;
        }
        .article-mini-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }
        .article-mini-tag {
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 500;
        }
        .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .btn-read-more:hover {
            background: var(--primary);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }

        /* ========== SIDEBAR ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
            position: sticky;
            top: 90px;
        }
        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
        }
        .sidebar-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--primary-light);
            position: relative;
        }
        .sidebar-card h4::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 40px;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
        }
        .sidebar-hot-item {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }
        .sidebar-hot-item:last-child {
            border-bottom: none;
        }
        .sidebar-hot-index {
            width: 26px;
            height: 26px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 13px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .sidebar-hot-item:nth-child(1) .sidebar-hot-index {
            background: #FF6B6B;
            color: #fff;
        }
        .sidebar-hot-item:nth-child(2) .sidebar-hot-index {
            background: #FFA94D;
            color: #fff;
        }
        .sidebar-hot-item:nth-child(3) .sidebar-hot-index {
            background: #FFD43B;
            color: #7a5e00;
        }
        .sidebar-hot-info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-hot-info .hot-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-hot-info .hot-title a {
            color: var(--text-heading);
        }
        .sidebar-hot-info .hot-title a:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .sidebar-hot-info .hot-date {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 4px;
        }
        .sidebar-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 7px;
        }
        .sidebar-tag {
            font-size: 12px;
            padding: 6px 13px;
            border-radius: 16px;
            background: var(--bg);
            color: var(--text-muted);
            transition: all var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
        }
        .sidebar-tag:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(26, 115, 232, 0.2);
            text-decoration: none;
        }
        .sidebar-subscribe {
            text-align: center;
        }
        .sidebar-subscribe p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .sidebar-subscribe input {
            width: 100%;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 14px;
            margin-bottom: 8px;
            transition: border-color var(--transition);
        }
        .sidebar-subscribe input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
        }
        .sidebar-subscribe .btn-sub {
            width: 100%;
            padding: 10px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            border: none;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .sidebar-subscribe .btn-sub:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-sm);
        }

        /* ========== PAGINATION ========== */
        .pagination-section {
            padding: 32px 0;
            display: flex;
            justify-content: center;
        }
        .pagination-custom {
            display: flex;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .pagination-custom .page-item .page-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: var(--bg-white);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }
        .pagination-custom .page-item .page-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(26, 115, 232, 0.3);
            text-decoration: none;
        }
        .pagination-custom .page-item.active .page-link {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 700;
        }
        .pagination-custom .page-item.disabled .page-link {
            color: var(--text-light);
            pointer-events: none;
            background: var(--bg);
            border-color: var(--border-light);
        }

        /* ========== RECOMMEND SECTION ========== */
        .recommend-section {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }
        .section-header .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
        }
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .recommend-card {
            background: var(--bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .recommend-card .card-img-wrap {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .recommend-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .recommend-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .recommend-card .card-body-custom {
            padding: 18px;
        }
        .recommend-card .card-body-custom h5 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .recommend-card .card-body-custom p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .recommend-card .card-body-custom .card-date {
            font-size: 12px;
            color: var(--text-light);
        }

        /* ========== STATS HIGHLIGHT ========== */
        .stats-highlight-section {
            padding: var(--section-gap) 0;
            background: linear-gradient(180deg, #F8FAFD 0%, #EEF4FB 100%);
        }
        .stats-cards-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .stat-card .stat-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin: 0 auto 14px;
        }
        .stat-card .stat-value {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-heading);
            line-height: 1.2;
        }
        .stat-card .stat-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ========== EXPERT INTRO ========== */
        .expert-intro-section {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
        }
        .expert-intro-content {
            display: flex;
            gap: 40px;
            align-items: center;
        }
        .expert-intro-text {
            flex: 1;
        }
        .expert-intro-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 16px;
        }
        .expert-intro-text p {
            font-size: 16px;
            color: var(--text-body);
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .expert-intro-image {
            flex-shrink: 0;
            width: 380px;
            height: 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .expert-intro-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: var(--section-gap) 0;
            background: var(--bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-card .faq-question {
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: background var(--transition);
        }
        .faq-card .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-card .faq-question .faq-icon {
            font-size: 14px;
            color: var(--primary);
            transition: transform var(--transition-slow);
            flex-shrink: 0;
        }
        .faq-card.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-card .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 22px;
        }
        .faq-card.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-card .faq-answer p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.75;
            margin: 0;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: var(--section-gap) 0;
            background: linear-gradient(135deg, #1A73E8 0%, #1557B0 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -50px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }
        .cta-form-card {
            max-width: 520px;
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-lg);
            position: relative;
            z-index: 1;
        }
        .cta-form-card input {
            width: 100%;
            padding: 13px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 15px;
            margin-bottom: 12px;
            transition: border-color var(--transition);
        }
        .cta-form-card input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
        }
        .cta-form-card .btn-cta-submit {
            width: 100%;
            padding: 14px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            border: none;
            font-weight: 700;
            font-size: 16px;
            cursor: pointer;
            transition: all var(--transition);
        }
        .cta-form-card .btn-cta-submit:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
        }
        .cta-form-card .privacy-note {
            font-size: 12px;
            color: var(--text-light);
            text-align: center;
            margin-top: 10px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1F2937;
            color: #d1d5db;
            padding: 48px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 36px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #9ca3af;
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #9ca3af;
        }
        .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-links a {
            color: #9ca3af;
            font-size: 13px;
        }
        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr 280px;
                gap: 28px;
            }
            .article-list-thumb {
                width: 150px;
                height: 110px;
            }
            .stats-cards-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .expert-intro-content {
                flex-direction: column;
                text-align: center;
            }
            .expert-intro-image {
                width: 100%;
                max-width: 400px;
                height: 220px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 20px;
            }
            .header-inner {
                flex-wrap: wrap;
                gap: 10px;
            }
            .nav-cards-row {
                order: 3;
                width: 100%;
                overflow-x: auto;
                padding-bottom: 4px;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .nav-cards-row.collapsed-mobile {
                display: none;
            }
            .nav-cards-row.expanded-mobile {
                display: flex;
            }
            .header-cta {
                order: 2;
            }
            .brand-logo {
                order: 1;
            }
            .navbar-toggler-custom {
                order: 2;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .content-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .sidebar {
                position: static;
                order: 3;
            }
            .article-list-item {
                flex-direction: column;
                gap: 14px;
            }
            .article-list-thumb {
                width: 100%;
                height: 180px;
            }
            .filter-tags-bar {
                gap: 6px;
                padding: 14px 16px;
            }
            .filter-tag {
                padding: 7px 13px;
                font-size: 13px;
            }
            .stats-cards-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .expert-intro-image {
                width: 100%;
                height: 200px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .cta-form-card {
                padding: 22px;
            }
            :root {
                --section-gap: 60px;
            }
        }

        @media (max-width: 520px) {
            .brand-logo {
                font-size: 18px;
            }
            .brand-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
            }
            .category-hero {
                padding: 36px 0 32px;
            }
            .category-hero h1 {
                font-size: 22px;
            }
            .category-hero .hero-stats-row {
                gap: 18px;
            }
            .hero-stat-item .stat-num {
                font-size: 24px;
            }
            .article-list-thumb {
                height: 150px;
            }
            .article-list-body .article-title {
                font-size: 16px;
            }
            .stats-cards-row {
                grid-template-columns: 1fr;
            }
            .stat-card .stat-value {
                font-size: 28px;
            }
            .pagination-custom .page-item .page-link {
                width: 34px;
                height: 34px;
                font-size: 13px;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #1A73E8;
            --primary-dark: #1557B0;
            --primary-light: #E8F2FC;
            --accent: #F5A623;
            --accent-light: #FFF8EB;
            --bg: #F8FAFD;
            --bg-white: #FFFFFF;
            --text-heading: #1F2937;
            --text-body: #4B5563;
            --text-muted: #6B7280;
            --text-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F0F1F3;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.10), 0 8px 24px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12), 0 16px 40px rgba(0, 0, 0, 0.08);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --transition: 0.2s ease;
            --transition-slow: 0.3s ease;
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
            --container-max: 1200px;
            --section-gap: 80px;
            --section-gap-mobile: 60px;
            --card-padding: 24px;
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), text-decoration var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 32px;
        }

        /* ========== HEADER / NAVIGATION ========== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 16px;
            flex-wrap: nowrap;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: var(--text-heading);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo:hover {
            text-decoration: none;
            color: var(--primary);
        }

        .brand-logo .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-cards-row {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .nav-cards-row::-webkit-scrollbar {
            display: none;
        }

        .nav-card-item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 8px 14px;
            border-radius: 10px;
            background: var(--bg);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            transition: all var(--transition);
            border: 1px solid transparent;
            cursor: pointer;
            flex-shrink: 0;
        }

        .nav-card-item:hover {
            background: var(--primary-light);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-1px);
            text-decoration: none;
            border-color: rgba(26, 115, 232, 0.2);
        }

        .nav-card-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .nav-card-item.active::after {
            content: '';
            position: absolute;
            bottom: -3px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--accent);
            border-radius: 2px;
        }

        .nav-card-item i {
            font-size: 13px;
            opacity: 0.85;
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .btn-nav-cta:focus-visible {
            outline: 3px solid var(--primary);
            outline-offset: 2px;
        }

        .navbar-toggler-custom {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-heading);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .navbar-toggler-custom:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 14px 0;
        }

        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb-custom li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-custom li+li::before {
            content: '›';
            color: var(--text-light);
            font-size: 16px;
            margin-right: 4px;
        }

        .breadcrumb-custom a {
            color: var(--text-muted);
            transition: color var(--transition);
        }

        .breadcrumb-custom a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .breadcrumb-custom .current {
            color: var(--text-heading);
            font-weight: 600;
        }

        /* ========== PAGE HERO ========== */
        .page-hero-section {
            background: linear-gradient(135deg, #E8F2FC 0%, #F8FAFD 40%, #FFFFFF 100%);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }

        .page-hero-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(26, 115, 232, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-hero-inner {
            position: relative;
            z-index: 1;
        }

        .page-hero-inner h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .page-hero-inner .hero-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 700px;
            line-height: 1.7;
        }

        .page-hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 20px;
            flex-wrap: wrap;
        }

        .page-hero-stats .stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
        }

        .page-hero-stats .stat-item i {
            color: var(--primary);
            font-size: 18px;
        }

        .page-hero-stats .stat-num {
            font-weight: 700;
            color: var(--primary);
            font-size: 20px;
        }

        /* ========== MASONRY WATERFALL GRID ========== */
        .masonry-section {
            padding: var(--section-gap) 0;
        }

        .masonry-section .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .masonry-section .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .masonry-section .section-header p {
            color: var(--text-muted);
            font-size: 15px;
        }

        .masonry-grid {
            column-count: 3;
            column-gap: 24px;
        }

        .masonry-item {
            break-inside: avoid;
            margin-bottom: 24px;
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-slow);
            border: 1px solid var(--border-light);
            display: inline-block;
            width: 100%;
        }

        .masonry-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(26, 115, 232, 0.15);
        }

        .masonry-item .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #f0f4f8;
        }

        .masonry-item .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .masonry-item:hover .card-img-wrap img {
            transform: scale(1.04);
        }

        .masonry-item .card-img-wrap .card-date-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.95);
            color: var(--text-heading);
            font-size: 12px;
            font-weight: 600;
            padding: 6px 12px;
            border-radius: 20px;
            box-shadow: 0 1px 6px rgba(0, 0, 0, 0.1);
            z-index: 2;
            letter-spacing: 0.3px;
        }

        .masonry-item .card-body-content {
            padding: 20px 22px 22px;
        }

        .masonry-item .card-body-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .masonry-item .card-body-content h3 a {
            color: var(--text-heading);
            transition: color var(--transition);
        }

        .masonry-item .card-body-content h3 a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .masonry-item .card-body-content .card-excerpt {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 4;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .masonry-item .card-body-content .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-light);
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }

        .masonry-item .card-body-content .card-meta .read-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }

        .masonry-item .card-body-content .card-meta .read-more:hover {
            color: var(--primary-dark);
            text-decoration: none;
            gap: 8px;
        }

        .masonry-item .card-body-content .card-meta .read-more i {
            font-size: 11px;
            transition: transform var(--transition);
        }

        .masonry-item .card-body-content .card-meta .read-more:hover i {
            transform: translateX(3px);
        }

        .masonry-item .card-tag {
            display: inline-block;
            font-size: 11px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            margin-bottom: 10px;
            letter-spacing: 0.4px;
        }

        /* ========== PAGINATION ========== */
        .pagination-section {
            padding: 20px 0 60px;
            text-align: center;
        }

        .pagination-custom {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .pagination-custom .page-item .page-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: var(--bg-white);
            color: var(--text-body);
            font-weight: 500;
            font-size: 14px;
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
        }

        .pagination-custom .page-item .page-link:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(26, 115, 232, 0.3);
            text-decoration: none;
        }

        .pagination-custom .page-item.active .page-link {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(26, 115, 232, 0.3);
        }

        .pagination-custom .page-item.disabled .page-link {
            color: var(--text-light);
            pointer-events: none;
            background: #f9fafb;
            border-color: var(--border-light);
        }

        .pagination-custom .page-nav {
            width: auto;
            padding: 0 16px;
        }

        /* ========== TAGS SECTION ========== */
        .tags-section {
            padding: 40px 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .tags-section .section-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-muted);
            margin-bottom: 16px;
            text-align: center;
            letter-spacing: 0.5px;
        }

        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }

        .tag-chip {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 22px;
            background: var(--bg);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
        }

        .tag-chip:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: rgba(26, 115, 232, 0.3);
            text-decoration: none;
            box-shadow: var(--shadow-sm);
        }

        .tag-chip.hot {
            background: var(--accent-light);
            color: #c17d0a;
            border-color: rgba(245, 166, 35, 0.3);
            font-weight: 600;
        }

        /* ========== EXPERT INTRO SECTION ========== */
        .expert-intro-section {
            padding: var(--section-gap) 0;
            background: var(--bg);
        }

        .expert-intro-section .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .expert-intro-section .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .expert-intro-section .section-header p {
            color: var(--text-muted);
            font-size: 15px;
            max-width: 600px;
            margin: 0 auto;
        }

        .expert-cards-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .expert-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
        }

        .expert-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .expert-card .expert-avatar {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--primary-light);
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary);
            font-weight: 700;
        }

        .expert-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 4px;
        }

        .expert-card .expert-title {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 10px;
        }

        .expert-card .expert-bio {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ========== TOOLS SECTION ========== */
        .tools-section {
            padding: var(--section-gap) 0;
            background: var(--bg-white);
        }

        .tools-section .section-header {
            text-align: center;
            margin-bottom: 36px;
        }

        .tools-section .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .tools-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .tool-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            cursor: pointer;
        }

        .tool-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: rgba(26, 115, 232, 0.2);
            background: #fff;
        }

        .tool-card .tool-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary-light);
            margin: 0 auto 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
        }

        .tool-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 6px;
        }

        .tool-card p {
            font-size: 13px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, #E8F2FC 0%, #F0F6FD 50%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(26, 115, 232, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 44px 36px;
            text-align: center;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border-light);
            max-width: 640px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .cta-card h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .cta-card p {
            color: var(--text-muted);
            font-size: 15px;
            margin-bottom: 24px;
        }

        .cta-card .cta-form-row {
            display: flex;
            gap: 10px;
            max-width: 440px;
            margin: 0 auto;
        }

        .cta-card .cta-form-row input {
            flex: 1;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            font-size: 14px;
            background: var(--bg);
            transition: all var(--transition);
        }

        .cta-card .cta-form-row input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
            background: #fff;
        }

        .cta-card .btn-cta-submit {
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .cta-card .btn-cta-submit:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }

        .cta-card .cta-privacy {
            font-size: 12px;
            color: var(--text-light);
            margin-top: 12px;
        }

        /* ========== FAQ SECTION ========== */
        .faq-section {
            padding: var(--section-gap) 0;
            background: var(--bg);
        }

        .faq-section .section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .faq-section .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-slow);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-item .faq-question {
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 16px;
            color: var(--text-heading);
            transition: all var(--transition);
            user-select: none;
            gap: 16px;
        }

        .faq-item .faq-question:hover {
            color: var(--primary);
        }

        .faq-item .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            transition: all var(--transition-slow);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-item .faq-answer-inner {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-item.open {
            border-color: rgba(26, 115, 232, 0.2);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #1F2937;
            color: #d1d5db;
            padding: 56px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 9px;
        }

        .footer-col ul li a {
            color: #9ca3af;
            font-size: 13px;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding: 20px 0;
            font-size: 12px;
            color: #9ca3af;
        }

        .footer-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: #9ca3af;
            font-size: 12px;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .masonry-grid {
                column-count: 2;
            }
            .tools-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .expert-cards-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .expert-cards-row .expert-card:last-child {
                grid-column: span 2;
                max-width: 400px;
                justify-self: center;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 20px;
            }
            :root {
                --section-gap: 60px;
            }
            .masonry-grid {
                column-count: 1;
            }
            .masonry-item {
                margin-bottom: 20px;
            }
            .page-hero-inner h1 {
                font-size: 26px;
            }
            .page-hero-stats {
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .footer-links {
                justify-content: center;
            }
            .nav-cards-row {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 20px;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--border-light);
                z-index: 1040;
                gap: 4px;
            }
            .nav-cards-row.show {
                display: flex;
            }
            .nav-card-item {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 15px;
            }
            .navbar-toggler-custom {
                display: block;
            }
            .header-cta .btn-nav-cta span {
                display: none;
            }
            .header-cta .btn-nav-cta {
                padding: 10px 14px;
                font-size: 16px;
            }
            .tools-grid {
                grid-template-columns: 1fr 1fr;
            }
            .expert-cards-row {
                grid-template-columns: 1fr;
            }
            .expert-cards-row .expert-card:last-child {
                grid-column: span 1;
                max-width: 100%;
            }
            .cta-card .cta-form-row {
                flex-direction: column;
            }
            .cta-card {
                padding: 28px 20px;
            }
            .breadcrumb-custom {
                font-size: 13px;
            }
            .pagination-custom .page-item .page-link {
                width: 36px;
                height: 36px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .masonry-grid {
                column-count: 1;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .page-hero-inner h1 {
                font-size: 22px;
            }
            .page-hero-stats {
                flex-direction: column;
                gap: 8px;
            }
            .tools-grid {
                grid-template-columns: 1fr;
            }
            .tags-cloud {
                gap: 6px;
            }
            .tag-chip {
                padding: 6px 14px;
                font-size: 13px;
            }
            .masonry-item .card-body-content h3 {
                font-size: 16px;
            }
            .masonry-section .section-header h2,
            .expert-intro-section .section-header h2,
            .tools-section .section-header h2,
            .faq-section .section-header h2 {
                font-size: 22px;
            }
        }