/* roulang page: index */
:root {
            --ab-primary: #0d3b66;
            --ab-primary-light: #1a5a8a;
            --ab-primary-dark: #072540;
            --ab-accent: #f0a500;
            --ab-accent-hover: #d49400;
            --ab-warm: #e85d04;
            --ab-bg: #f7f8fa;
            --ab-surface: #ffffff;
            --ab-text: #1a1a2e;
            --ab-text-secondary: #5a6275;
            --ab-text-muted: #8b919e;
            --ab-border: #e2e5ec;
            --ab-border-light: #eef0f4;
            --ab-radius-sm: 8px;
            --ab-radius: 14px;
            --ab-radius-lg: 20px;
            --ab-radius-xl: 28px;
            --ab-shadow-sm: 0 1px 3px rgba(13, 59, 102, 0.06);
            --ab-shadow: 0 4px 20px rgba(13, 59, 102, 0.08);
            --ab-shadow-lg: 0 12px 40px rgba(13, 59, 102, 0.12);
            --ab-shadow-xl: 0 20px 60px rgba(13, 59, 102, 0.16);
            --ab-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --ab-font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --ab-section-gap: 80px;
            --ab-section-gap-sm: 50px;
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 90px;
        }

        body {
            font-family: var(--ab-font);
            background: var(--ab-bg);
            color: var(--ab-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            padding-top: 0;
        }

        a {
            color: var(--ab-primary);
            text-decoration: none;
            transition: color var(--ab-transition);
        }
        a:hover {
            color: var(--ab-primary-light);
        }

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

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

        .btn:focus-visible,
        a:focus-visible {
            outline: 3px solid rgba(240, 165, 0, 0.5);
            outline-offset: 3px;
            border-radius: 6px;
        }

        /* ========== HEADER / NAV ========== */
        .ab-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--ab-border-light);
            box-shadow: var(--ab-shadow-sm);
            transition: box-shadow var(--ab-transition), background var(--ab-transition);
        }
        .ab-header.scrolled {
            box-shadow: var(--ab-shadow);
            background: rgba(255, 255, 255, 0.98);
        }

        .ab-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            gap: 20px;
            flex-wrap: nowrap;
        }

        .ab-logo {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--ab-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            transition: color var(--ab-transition);
        }
        .ab-logo:hover {
            color: var(--ab-primary-dark);
        }
        .ab-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--ab-radius-sm);
            background: linear-gradient(135deg, var(--ab-primary) 0%, var(--ab-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .ab-nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: nowrap;
        }
        .ab-nav-list li a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--ab-text-secondary);
            white-space: nowrap;
            transition: all var(--ab-transition);
            position: relative;
        }
        .ab-nav-list li a:hover,
        .ab-nav-list li a.active {
            color: var(--ab-primary);
            background: rgba(13, 59, 102, 0.06);
        }
        .ab-nav-list li a.active {
            font-weight: 600;
            background: rgba(13, 59, 102, 0.08);
        }
        .ab-nav-list li a .nav-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--ab-accent);
            margin-right: 6px;
            opacity: 0;
            transform: scale(0);
            transition: all var(--ab-transition);
        }
        .ab-nav-list li a.active .nav-dot {
            opacity: 1;
            transform: scale(1);
        }

        .ab-nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .ab-btn-primary {
            background: var(--ab-primary);
            color: #fff;
            border: none;
            padding: 10px 22px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--ab-transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 14px rgba(13, 59, 102, 0.25);
        }
        .ab-btn-primary:hover {
            background: var(--ab-primary-light);
            box-shadow: 0 6px 22px rgba(13, 59, 102, 0.35);
            color: #fff;
            transform: translateY(-1px);
        }
        .ab-btn-outline {
            background: transparent;
            color: var(--ab-primary);
            border: 2px solid var(--ab-primary);
            padding: 9px 20px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--ab-transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .ab-btn-outline:hover {
            background: var(--ab-primary);
            color: #fff;
            box-shadow: var(--ab-shadow);
        }
        .ab-btn-accent {
            background: var(--ab-accent);
            color: #fff;
            border: none;
            padding: 11px 24px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--ab-transition);
            white-space: nowrap;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            box-shadow: 0 4px 16px rgba(240, 165, 0, 0.3);
        }
        .ab-btn-accent:hover {
            background: var(--ab-accent-hover);
            box-shadow: 0 8px 24px rgba(240, 165, 0, 0.4);
            color: #fff;
            transform: translateY(-2px);
        }

        .ab-mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--ab-text);
            cursor: pointer;
            padding: 6px;
            line-height: 1;
        }

        /* ========== HERO ========== */
        .ab-hero {
            position: relative;
            background: linear-gradient(150deg, #0a2e4a 0%, #0d3b66 30%, #0f4475 60%, #0d3b66 100%);
            color: #fff;
            padding: 90px 0 100px;
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }
        .ab-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }
        .ab-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--ab-bg) 0%, transparent 100%);
            z-index: 1;
            pointer-events: none;
        }
        .ab-hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        .ab-hero-text h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }
        .ab-hero-text h1 .highlight {
            color: var(--ab-accent);
            position: relative;
        }
        .ab-hero-text .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 30px;
            line-height: 1.7;
            max-width: 480px;
        }
        .ab-hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .ab-hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .ab-hero-card-stack {
            position: relative;
            width: 100%;
            max-width: 420px;
            aspect-ratio: 4/3;
        }
        .ab-hero-card-stack .hero-card {
            position: absolute;
            border-radius: var(--ab-radius-lg);
            overflow: hidden;
            box-shadow: var(--ab-shadow-xl);
            transition: all var(--ab-transition);
        }
        .ab-hero-card-stack .hero-card:nth-child(1) {
            top: 0;
            right: 0;
            width: 65%;
            z-index: 3;
            transform: rotate(2deg);
        }
        .ab-hero-card-stack .hero-card:nth-child(2) {
            bottom: 5%;
            left: 0;
            width: 55%;
            z-index: 2;
            transform: rotate(-4deg);
        }
        .ab-hero-card-stack .hero-card:nth-child(3) {
            top: 15%;
            left: 20%;
            width: 50%;
            z-index: 1;
            transform: rotate(6deg);
        }
        .ab-hero-card-stack .hero-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        /* ========== SECTIONS ========== */
        .ab-section {
            padding: var(--ab-section-gap) 0;
        }
        .ab-section-sm {
            padding: var(--ab-section-gap-sm) 0;
        }
        .ab-section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--ab-accent);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 10px;
        }
        .ab-section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--ab-accent);
            border-radius: 2px;
        }
        .ab-section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--ab-text);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .ab-section-desc {
            font-size: 1.05rem;
            color: var(--ab-text-secondary);
            max-width: 600px;
            margin-bottom: 40px;
            line-height: 1.7;
        }
        .ab-section-header {
            margin-bottom: 40px;
        }
        .ab-section-header.centered {
            text-align: center;
        }
        .ab-section-header.centered .ab-section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== CARDS ========== */
        .ab-card {
            background: var(--ab-surface);
            border-radius: var(--ab-radius);
            box-shadow: var(--ab-shadow);
            overflow: hidden;
            transition: all var(--ab-transition);
            border: 1px solid transparent;
            height: 100%;
        }
        .ab-card:hover {
            box-shadow: var(--ab-shadow-lg);
            transform: translateY(-4px);
            border-color: var(--ab-border);
        }
        .ab-card-img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
            display: block;
        }
        .ab-card-body {
            padding: 24px 22px;
        }
        .ab-card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--ab-primary);
            background: rgba(13, 59, 102, 0.07);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
        }
        .ab-card-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--ab-text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .ab-card-text {
            font-size: 0.9rem;
            color: var(--ab-text-secondary);
            line-height: 1.6;
        }
        .ab-card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--ab-primary);
            margin-top: 10px;
            transition: gap var(--ab-transition);
        }
        .ab-card-link:hover {
            gap: 8px;
            color: var(--ab-primary-light);
        }
        .ab-card-link i {
            font-size: 0.75rem;
            transition: transform var(--ab-transition);
        }
        .ab-card-link:hover i {
            transform: translateX(3px);
        }

        /* ========== STAT BLOCK ========== */
        .ab-stat-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .ab-stat-item {
            text-align: center;
            padding: 28px 20px;
            background: var(--ab-surface);
            border-radius: var(--ab-radius);
            box-shadow: var(--ab-shadow);
            transition: all var(--ab-transition);
            border: 1px solid transparent;
        }
        .ab-stat-item:hover {
            box-shadow: var(--ab-shadow-lg);
            transform: translateY(-3px);
            border-color: var(--ab-border);
        }
        .ab-stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--ab-primary);
            line-height: 1;
            margin-bottom: 8px;
        }
        .ab-stat-number .ab-stat-plus {
            color: var(--ab-accent);
        }
        .ab-stat-label {
            font-size: 0.9rem;
            color: var(--ab-text-secondary);
            font-weight: 500;
        }

        /* ========== INFO LIST ========== */
        .ab-info-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .ab-info-list li {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--ab-border-light);
            align-items: flex-start;
            transition: all var(--ab-transition);
        }
        .ab-info-list li:last-child {
            border-bottom: none;
        }
        .ab-info-list li:hover {
            background: rgba(13, 59, 102, 0.02);
            padding-left: 8px;
            border-radius: var(--ab-radius-sm);
        }
        .ab-info-list .info-date {
            font-size: 0.8rem;
            color: var(--ab-text-muted);
            white-space: nowrap;
            padding-top: 2px;
            font-weight: 500;
            min-width: 80px;
        }
        .ab-info-list .info-content h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--ab-text);
            margin: 0 0 4px;
            line-height: 1.4;
        }
        .ab-info-list .info-content p {
            font-size: 0.85rem;
            color: var(--ab-text-secondary);
            margin: 0;
            line-height: 1.5;
        }
        .ab-info-list .info-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            background: rgba(240, 165, 0, 0.12);
            color: #b87a00;
            margin-left: 8px;
        }

        /* ========== FAQ ========== */
        .ab-faq-item {
            background: var(--ab-surface);
            border-radius: var(--ab-radius);
            box-shadow: var(--ab-shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
            border: 1px solid var(--ab-border-light);
            transition: all var(--ab-transition);
        }
        .ab-faq-item:hover {
            box-shadow: var(--ab-shadow);
        }
        .ab-faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--ab-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            gap: 16px;
            transition: all var(--ab-transition);
        }
        .ab-faq-question i {
            font-size: 0.85rem;
            color: var(--ab-text-muted);
            transition: transform var(--ab-transition);
        }
        .ab-faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--ab-accent);
        }
        .ab-faq-answer {
            padding: 0 24px 20px;
            font-size: 0.9rem;
            color: var(--ab-text-secondary);
            line-height: 1.7;
            display: none;
        }
        .ab-faq-answer.show {
            display: block;
        }

        /* ========== CTA ========== */
        .ab-cta {
            background: linear-gradient(135deg, var(--ab-primary) 0%, var(--ab-primary-dark) 100%);
            color: #fff;
            border-radius: var(--ab-radius-xl);
            padding: 60px 50px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .ab-cta::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            z-index: 0;
        }
        .ab-cta>* {
            position: relative;
            z-index: 1;
        }
        .ab-cta h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .ab-cta p {
            font-size: 1.05rem;
            opacity: 0.85;
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== FOOTER ========== */
        .ab-footer {
            background: var(--ab-primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 50px 0 28px;
            font-size: 0.9rem;
        }
        .ab-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .ab-footer h5 {
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 16px;
        }
        .ab-footer a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: color var(--ab-transition);
            font-size: 0.85rem;
        }
        .ab-footer a:hover {
            color: var(--ab-accent);
        }
        .ab-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .ab-footer ul li {
            margin-bottom: 8px;
        }
        .ab-footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .ab-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .ab-hero-content {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .ab-hero-text h1 {
                font-size: 2.3rem;
            }
            .ab-hero-visual {
                order: -1;
            }
            .ab-hero-card-stack {
                max-width: 300px;
                margin: 0 auto;
            }
            .ab-stat-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .ab-footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .ab-section {
                padding: 60px 0;
            }
            .ab-section-title {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .ab-mobile-toggle {
                display: block;
            }
            .ab-nav-list {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: #fff;
                flex-direction: column;
                padding: 80px 24px 30px;
                gap: 4px;
                box-shadow: var(--ab-shadow-xl);
                transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                z-index: 1060;
                align-items: stretch;
            }
            .ab-nav-list.open {
                right: 0;
            }
            .ab-nav-list li a {
                padding: 12px 16px;
                border-radius: var(--ab-radius-sm);
                font-size: 1rem;
            }
            .ab-nav-overlay {
                position: fixed;
                inset: 0;
                background: rgba(0, 0, 0, 0.4);
                z-index: 1055;
                opacity: 0;
                pointer-events: none;
                transition: opacity var(--ab-transition);
            }
            .ab-nav-overlay.show {
                opacity: 1;
                pointer-events: auto;
            }
            .ab-nav-actions {
                gap: 6px;
            }
            .ab-nav-actions .ab-btn-primary {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .ab-hero {
                padding: 50px 0 60px;
                min-height: auto;
            }
            .ab-hero-text h1 {
                font-size: 1.9rem;
            }
            .ab-hero-text .hero-subtitle {
                font-size: 1rem;
            }
            .ab-stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .ab-stat-number {
                font-size: 2rem;
            }
            .ab-section-title {
                font-size: 1.55rem;
            }
            .ab-cta {
                padding: 40px 24px;
                border-radius: var(--ab-radius-lg);
            }
            .ab-cta h2 {
                font-size: 1.5rem;
            }
            .ab-footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .ab-card-body {
                padding: 18px 16px;
            }
            .row-cols-md-3>* {
                margin-bottom: 20px;
            }
        }

        @media (max-width: 520px) {
            .ab-header-inner {
                padding: 10px 0;
                gap: 10px;
            }
            .ab-logo {
                font-size: 1.15rem;
            }
            .ab-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.95rem;
            }
            .ab-hero-text h1 {
                font-size: 1.55rem;
            }
            .ab-hero-buttons {
                flex-direction: column;
                gap: 10px;
            }
            .ab-hero-buttons .ab-btn-accent,
            .ab-hero-buttons .ab-btn-outline {
                width: 100%;
                justify-content: center;
            }
            .ab-stat-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .ab-stat-number {
                font-size: 1.7rem;
            }
            .ab-stat-label {
                font-size: 0.78rem;
            }
            .ab-section {
                padding: 40px 0;
            }
            .ab-section-title {
                font-size: 1.35rem;
            }
            .ab-cta h2 {
                font-size: 1.3rem;
            }
            .ab-nav-actions .ab-btn-primary {
                display: none;
            }
            .ab-hero-card-stack {
                max-width: 220px;
            }
        }

/* roulang page: article */
:root {
            --ab-primary: #1e3c6e;
            --ab-primary-light: #2a4f8a;
            --ab-accent: #f0a500;
            --ab-accent-light: #ffc107;
            --ab-bg: #f8f9fb;
            --ab-white: #ffffff;
            --ab-text: #2c3e50;
            --ab-text-soft: #5a6e7e;
            --ab-border: #e5e9f0;
            --ab-radius: 12px;
            --ab-radius-sm: 8px;
            --ab-shadow: 0 8px 30px rgba(0,0,0,0.06);
            --ab-shadow-hover: 0 12px 36px rgba(0,0,0,0.10);
            --transition: 0.25s ease;
            --ab-font: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        * { box-sizing: border-box; }
        body {
            font-family: var(--ab-font);
            background: var(--ab-bg);
            color: var(--ab-text);
            margin: 0;
            line-height: 1.6;
            padding-top: 120px;
        }
        a { text-decoration: none; transition: var(--transition); color: var(--ab-primary); }
        a:hover { color: var(--ab-accent); }
        img { max-width: 100%; height: auto; display: block; }

        .ab-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(30,60,110,0.97);
            backdrop-filter: blur(12px);
            z-index: 1000;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
        }
        .ab-top-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.6rem 1.5rem;
            border-bottom: 1px solid rgba(255,255,255,0.12);
        }
        .ab-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .ab-logo i { color: var(--ab-accent); font-size: 1.4rem; }
        .ab-search-box {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.15);
            border-radius: 30px;
            padding: 0.3rem 1rem;
            min-width: 200px;
        }
        .ab-search-box input {
            background: transparent;
            border: none;
            outline: none;
            color: #fff;
            font-size: 0.9rem;
            width: 100%;
        }
        .ab-search-box input::placeholder { color: rgba(255,255,255,0.7); }
        .ab-search-box button {
            background: none;
            border: none;
            color: #fff;
            cursor: pointer;
            padding: 0.2rem 0.5rem;
        }
        .ab-nav-row {
            padding: 0 1.5rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .ab-nav-list {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 0.5rem;
            flex-wrap: wrap;
        }
        .ab-nav-list li a {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.7rem 1rem;
            color: rgba(255,255,255,0.85);
            font-weight: 500;
            font-size: 0.95rem;
            border-radius: 30px;
            transition: var(--transition);
            white-space: nowrap;
        }
        .ab-nav-list li a.active,
        .ab-nav-list li a:hover {
            background: rgba(255,255,255,0.12);
            color: #fff;
        }
        .nav-dot {
            width: 6px;
            height: 6px;
            background: var(--ab-accent);
            border-radius: 50%;
            display: inline-block;
        }
        .ab-hot-tags {
            display: flex;
            gap: 0.5rem;
            align-items: center;
            flex-wrap: wrap;
        }
        .ab-tag {
            font-size: 0.8rem;
            background: rgba(255,255,255,0.1);
            color: rgba(255,255,255,0.9);
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            transition: var(--transition);
        }
        .ab-tag:hover { background: var(--ab-accent); color: #1e3c6e; }

        .ab-hero-article {
            background: linear-gradient(135deg, #1e3c6e 0%, #14264a 100%);
            color: #fff;
            padding: 3rem 0 2rem;
            margin-bottom: 2rem;
            position: relative;
            overflow: hidden;
        }
        .ab-hero-article::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: rgba(240,165,0,0.08);
            border-radius: 50%;
            z-index: 0;
        }
        .ab-hero-article .container { position: relative; z-index: 1; }
        .ab-article-meta {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
            opacity: 0.85;
            font-size: 0.9rem;
        }
        .breadcrumb-ab {
            background: transparent;
            padding: 0;
            margin-bottom: 0.5rem;
        }
        .breadcrumb-ab .breadcrumb-item + .breadcrumb-item::before { color: rgba(255,255,255,0.6); }
        .breadcrumb-ab a { color: rgba(255,255,255,0.85); }
        .breadcrumb-ab .active { color: #fff; }

        .article-main-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.5rem;
            align-items: start;
        }
        .article-content {
            background: var(--ab-white);
            border-radius: var(--ab-radius);
            padding: 2.5rem;
            box-shadow: var(--ab-shadow);
            font-size: 1.05rem;
            line-height: 1.8;
        }
        .article-content img {
            border-radius: var(--ab-radius-sm);
            margin: 1.5rem 0;
        }
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }
        .sidebar-card {
            background: var(--ab-white);
            border-radius: var(--ab-radius);
            padding: 1.5rem;
            box-shadow: var(--ab-shadow);
        }
        .sidebar-card h5 {
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--ab-primary);
            border-left: 4px solid var(--ab-accent);
            padding-left: 0.8rem;
        }
        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-list li {
            padding: 0.6rem 0;
            border-bottom: 1px solid var(--ab-border);
        }
        .sidebar-list li:last-child { border-bottom: none; }
        .sidebar-list a {
            font-weight: 500;
            color: var(--ab-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .sidebar-list a:hover { color: var(--ab-accent); padding-left: 4px; }
        .cta-box {
            background: linear-gradient(145deg, #1e3c6e, #244a7a);
            color: #fff;
            border-radius: var(--ab-radius);
            padding: 2rem 1.5rem;
            text-align: center;
        }
        .cta-box h4 { font-weight: 700; margin-bottom: 1rem; }
        .btn-ab {
            background: var(--ab-accent);
            border: none;
            color: #1e3c6e;
            font-weight: 700;
            padding: 0.7rem 1.8rem;
            border-radius: 30px;
            transition: var(--transition);
            box-shadow: 0 4px 12px rgba(240,165,0,0.3);
        }
        .btn-ab:hover {
            background: #ffb81c;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(240,165,0,0.4);
            color: #1e3c6e;
        }
        .btn-ab-outline {
            background: transparent;
            border: 2px solid var(--ab-accent);
            color: var(--ab-accent);
            border-radius: 30px;
            padding: 0.6rem 1.6rem;
            font-weight: 600;
            transition: var(--transition);
        }
        .btn-ab-outline:hover {
            background: var(--ab-accent);
            color: #1e3c6e;
        }

        .ab-footer {
            background: #142640;
            color: rgba(255,255,255,0.8);
            padding: 3.5rem 0 1.5rem;
            margin-top: 4rem;
        }
        .ab-footer h5 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 1.2rem;
            font-size: 1.1rem;
        }
        .ab-footer ul {
            list-style: none;
            padding: 0;
        }
        .ab-footer ul li {
            margin-bottom: 0.6rem;
        }
        .ab-footer a {
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
        }
        .ab-footer a:hover { color: var(--ab-accent); }
        .ab-footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 2rem;
        }
        .ab-footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .ab-footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 1.5rem;
            margin-top: 2rem;
            text-align: center;
            font-size: 0.9rem;
            color: rgba(255,255,255,0.5);
        }

        @media (max-width: 1024px) {
            .article-main-wrapper {
                grid-template-columns: 1fr;
            }
            .ab-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            body { padding-top: 130px; }
            .ab-top-bar { flex-direction: column; gap: 0.5rem; }
            .ab-nav-row { flex-direction: column; align-items: flex-start; }
            .ab-nav-list { flex-wrap: wrap; }
            .ab-hot-tags { margin-top: 0.5rem; }
            .article-content { padding: 1.5rem; }
            .ab-footer-grid { grid-template-columns: 1fr; }
        }

/* roulang page: category1 */
:root {
            --ab-primary: #1B2A4A;
            --ab-primary-light: #243660;
            --ab-accent: #C8963E;
            --ab-accent-light: #D9B068;
            --ab-accent-pale: #F5EDDF;
            --ab-highlight: #D4403A;
            --ab-highlight-light: #E85D57;
            --ab-bg: #F9FAFB;
            --ab-white: #FFFFFF;
            --ab-text: #1F2937;
            --ab-text-weak: #6B7280;
            --ab-text-muted: #9CA3AF;
            --ab-border: #E5E7EB;
            --ab-border-light: #F0F1F3;
            --ab-radius-sm: 8px;
            --ab-radius: 12px;
            --ab-radius-lg: 16px;
            --ab-radius-xl: 20px;
            --ab-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --ab-shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --ab-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 10px rgba(0, 0, 0, 0.05);
            --ab-shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.06);
            --ab-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --ab-font: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --ab-section-gap: 80px;
            --ab-section-gap-md: 56px;
            --ab-section-gap-sm: 40px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--ab-font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--ab-text);
            background-color: var(--ab-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--ab-transition);
        }
        a:hover {
            color: var(--ab-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        h1, h2, h3, h4, h5, h6 {
            margin: 0;
            line-height: 1.3;
            font-weight: 700;
            color: var(--ab-primary);
        }
        p {
            margin: 0;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
            margin-left: auto;
            margin-right: auto;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1260px;
            }
        }

        /* ========== HEADER / NAV ========== */
        .ab-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--ab-white);
            border-bottom: 1px solid var(--ab-border-light);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
            transition: box-shadow var(--ab-transition);
        }
        .ab-header.scrolled {
            box-shadow: var(--ab-shadow);
        }
        .ab-navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: 24px;
        }
        .ab-logo {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--ab-primary);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            transition: color var(--ab-transition);
        }
        .ab-logo:hover {
            color: var(--ab-accent);
        }
        .ab-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--ab-radius-sm);
            background: linear-gradient(135deg, var(--ab-primary) 0%, var(--ab-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--ab-white);
            font-size: 1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .ab-nav-collapse {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .ab-nav-list {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .ab-nav-list li {
            margin: 0;
            padding: 0;
        }
        .ab-nav-list a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--ab-text-weak);
            white-space: nowrap;
            transition: all var(--ab-transition);
            position: relative;
        }
        .ab-nav-list a:hover {
            color: var(--ab-primary);
            background: var(--ab-accent-pale);
        }
        .ab-nav-list a.active {
            color: var(--ab-primary);
            background: var(--ab-accent-pale);
            font-weight: 600;
        }
        .ab-nav-list a .nav-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--ab-accent);
            flex-shrink: 0;
            opacity: 0;
            transform: scale(0);
            transition: all var(--ab-transition);
        }
        .ab-nav-list a.active .nav-dot {
            opacity: 1;
            transform: scale(1);
        }
        .ab-nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: 8px;
        }
        .ab-search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--ab-border);
            background: var(--ab-white);
            color: var(--ab-text-weak);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            transition: all var(--ab-transition);
            flex-shrink: 0;
        }
        .ab-search-btn:hover {
            background: var(--ab-primary);
            color: var(--ab-white);
            border-color: var(--ab-primary);
        }
        .ab-nav-toggler {
            display: none;
            width: 40px;
            height: 40px;
            border: 1px solid var(--ab-border);
            border-radius: var(--ab-radius-sm);
            background: var(--ab-white);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            padding: 0;
            cursor: pointer;
            transition: all var(--ab-transition);
            flex-shrink: 0;
        }
        .ab-nav-toggler span {
            display: block;
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--ab-primary);
            transition: all var(--ab-transition);
        }
        .ab-nav-toggler.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .ab-nav-toggler.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .ab-nav-toggler.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        @media (max-width: 991.98px) {
            .ab-nav-toggler {
                display: flex;
            }
            .ab-nav-collapse {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--ab-white);
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
                gap: 8px;
                transform: translateX(100%);
                transition: transform var(--ab-transition);
                z-index: 1049;
                overflow-y: auto;
                border-top: 1px solid var(--ab-border-light);
            }
            .ab-nav-collapse.open {
                transform: translateX(0);
            }
            .ab-nav-list {
                flex-direction: column;
                gap: 2px;
            }
            .ab-nav-list a {
                padding: 14px 18px;
                font-size: 1.05rem;
                border-radius: var(--ab-radius-sm);
            }
            .ab-nav-search {
                margin-left: 0;
                margin-top: 8px;
                justify-content: center;
            }
            .ab-search-btn {
                width: 44px;
                height: 44px;
            }
        }
        @media (max-width: 520px) {
            .ab-navbar {
                height: 56px;
            }
            .ab-nav-collapse {
                top: 56px;
            }
            .ab-logo {
                font-size: 1.15rem;
            }
            .ab-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }
        }

        /* ========== PAGE BANNER ========== */
        .ab-page-banner {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 80px 0;
            overflow: hidden;
            isolation: isolate;
        }
        .ab-page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(27, 42, 74, 0.88) 0%, rgba(27, 42, 74, 0.72) 50%, rgba(27, 42, 74, 0.85) 100%);
            z-index: 1;
        }
        .ab-page-banner::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -120px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(200, 150, 62, 0.25) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        .ab-page-banner-content {
            position: relative;
            z-index: 2;
        }
        .ab-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .ab-breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
            transition: color var(--ab-transition);
        }
        .ab-breadcrumb a:hover {
            color: var(--ab-accent-light);
        }
        .ab-breadcrumb .separator {
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.7rem;
        }
        .ab-breadcrumb .current {
            color: var(--ab-accent-light);
            font-weight: 500;
        }
        .ab-page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .ab-page-banner .banner-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            max-width: 600px;
            line-height: 1.7;
        }
        .ab-banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #FFFFFF;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
        }
        .ab-banner-badge .badge-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--ab-accent-light);
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.6); }
        }
        @media (max-width: 768px) {
            .ab-page-banner {
                padding: 50px 0;
            }
            .ab-page-banner h1 {
                font-size: 2rem;
            }
            .ab-page-banner .banner-subtitle {
                font-size: 1rem;
            }
        }
        @media (max-width: 520px) {
            .ab-page-banner {
                padding: 36px 0;
            }
            .ab-page-banner h1 {
                font-size: 1.6rem;
            }
            .ab-breadcrumb {
                font-size: 0.8rem;
                gap: 4px;
            }
        }

        /* ========== SECTION COMMONS ========== */
        .ab-section {
            padding: var(--ab-section-gap) 0;
        }
        .ab-section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--ab-accent);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 12px;
        }
        .ab-section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--ab-accent);
            border-radius: 2px;
        }
        .ab-section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--ab-primary);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .ab-section-desc {
            font-size: 1.05rem;
            color: var(--ab-text-weak);
            max-width: 640px;
            line-height: 1.7;
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .ab-section {
                padding: var(--ab-section-gap-md) 0;
            }
            .ab-section-title {
                font-size: 1.6rem;
            }
            .ab-section-desc {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .ab-section {
                padding: var(--ab-section-gap-sm) 0;
            }
            .ab-section-title {
                font-size: 1.35rem;
            }
        }

        /* ========== STATS ROW ========== */
        .ab-stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: -40px;
            position: relative;
            z-index: 3;
        }
        .ab-stat-card {
            background: var(--ab-white);
            border-radius: var(--ab-radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--ab-shadow-lg);
            border: 1px solid var(--ab-border-light);
            transition: all var(--ab-transition);
            position: relative;
            overflow: hidden;
        }
        .ab-stat-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 20%;
            right: 20%;
            height: 3px;
            border-radius: 3px;
            background: var(--ab-accent);
            opacity: 0;
            transition: opacity var(--ab-transition);
        }
        .ab-stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--ab-shadow-xl);
        }
        .ab-stat-card:hover::after {
            opacity: 1;
        }
        .ab-stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--ab-primary);
            letter-spacing: -0.03em;
            line-height: 1;
            margin-bottom: 6px;
        }
        .ab-stat-number .plus {
            color: var(--ab-accent);
        }
        .ab-stat-label {
            font-size: 0.9rem;
            color: var(--ab-text-weak);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .ab-stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
                margin-top: -30px;
            }
            .ab-stat-card {
                padding: 20px 16px;
            }
            .ab-stat-number {
                font-size: 2rem;
            }
        }
        @media (max-width: 520px) {
            .ab-stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
                margin-top: -20px;
            }
            .ab-stat-number {
                font-size: 1.6rem;
            }
            .ab-stat-label {
                font-size: 0.78rem;
            }
        }

        /* ========== COURSE CARDS GRID ========== */
        .ab-course-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .ab-course-card {
            background: var(--ab-white);
            border-radius: var(--ab-radius-lg);
            overflow: hidden;
            border: 1px solid var(--ab-border-light);
            box-shadow: var(--ab-shadow-sm);
            transition: all var(--ab-transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .ab-course-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--ab-shadow-lg);
            border-color: var(--ab-accent-pale);
        }
        .ab-course-card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #f0f2f5;
        }
        .ab-course-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .ab-course-card:hover .ab-course-card-img img {
            transform: scale(1.06);
        }
        .ab-course-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--ab-highlight);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            z-index: 2;
            letter-spacing: 0.03em;
        }
        .ab-course-card-body {
            padding: 20px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .ab-course-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--ab-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .ab-course-card-body p {
            font-size: 0.9rem;
            color: var(--ab-text-weak);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .ab-course-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--ab-text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--ab-border-light);
        }
        .ab-course-card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .ab-course-card-meta i {
            font-size: 0.85rem;
            color: var(--ab-accent);
        }
        @media (max-width: 991.98px) {
            .ab-course-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }
        @media (max-width: 600px) {
            .ab-course-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .ab-course-card-body h3 {
                font-size: 1.05rem;
            }
        }

        /* ========== LEARNING PATH (BRACKET STYLE) ========== */
        .ab-path-track {
            display: flex;
            align-items: stretch;
            gap: 0;
            position: relative;
            flex-wrap: nowrap;
            overflow-x: auto;
            padding: 10px 0 20px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }
        .ab-path-track::-webkit-scrollbar {
            height: 4px;
        }
        .ab-path-track::-webkit-scrollbar-track {
            background: var(--ab-border-light);
            border-radius: 4px;
        }
        .ab-path-track::-webkit-scrollbar-thumb {
            background: var(--ab-accent);
            border-radius: 4px;
        }
        .ab-path-step {
            flex: 0 0 220px;
            scroll-snap-align: start;
            position: relative;
            text-align: center;
            padding: 28px 20px 24px;
            background: var(--ab-white);
            border-radius: var(--ab-radius-lg);
            border: 2px solid var(--ab-border-light);
            box-shadow: var(--ab-shadow-sm);
            transition: all var(--ab-transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
        }
        .ab-path-step:hover {
            border-color: var(--ab-accent);
            box-shadow: var(--ab-shadow-lg);
            transform: translateY(-4px);
        }
        .ab-path-step.active-step {
            border-color: var(--ab-accent);
            background: var(--ab-accent-pale);
            box-shadow: var(--ab-shadow);
        }
        .ab-path-connector {
            flex: 0 0 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            min-width: 40px;
        }
        .ab-path-connector::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--ab-border);
            border-radius: 2px;
        }
        .ab-path-connector::after {
            content: '';
            position: absolute;
            right: 2px;
            top: 50%;
            transform: translateY(-50%);
            width: 0;
            height: 0;
            border-top: 5px solid transparent;
            border-bottom: 5px solid transparent;
            border-left: 7px solid var(--ab-border);
        }
        .ab-path-step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--ab-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .ab-path-step.active-step .ab-path-step-num {
            background: var(--ab-accent);
        }
        .ab-path-step h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--ab-primary);
        }
        .ab-path-step p {
            font-size: 0.8rem;
            color: var(--ab-text-weak);
            line-height: 1.5;
        }
        @media (max-width: 768px) {
            .ab-path-step {
                flex: 0 0 170px;
                padding: 20px 14px 18px;
            }
            .ab-path-connector {
                flex: 0 0 24px;
                min-width: 24px;
            }
            .ab-path-connector::before {
                width: 16px;
            }
            .ab-path-step-num {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
            .ab-path-step h4 {
                font-size: 0.85rem;
            }
        }

        /* ========== COUNTDOWN SECTION ========== */
        .ab-countdown-section {
            background: linear-gradient(135deg, var(--ab-primary) 0%, #1a3052 50%, #142440 100%);
            border-radius: var(--ab-radius-xl);
            padding: 48px 40px;
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .ab-countdown-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(200, 150, 62, 0.2) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        .ab-countdown-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(212, 64, 58, 0.15) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        .ab-countdown-inner {
            position: relative;
            z-index: 2;
        }
        .ab-countdown-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }
        .ab-countdown-header .icon-box {
            width: 48px;
            height: 48px;
            border-radius: var(--ab-radius-sm);
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: var(--ab-accent-light);
            flex-shrink: 0;
        }
        .ab-countdown-header h3 {
            font-size: 1.5rem;
            color: #FFFFFF;
            font-weight: 700;
        }
        .ab-countdown-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .ab-countdown-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--ab-radius);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--ab-transition);
        }
        .ab-countdown-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.25);
        }
        .ab-countdown-item .course-name {
            font-size: 1rem;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 8px;
        }
        .ab-countdown-timer {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 2rem;
            font-weight: 800;
            color: var(--ab-accent-light);
            letter-spacing: 0.02em;
            font-variant-numeric: tabular-nums;
            font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
        }
        .ab-countdown-timer .timer-unit {
            font-size: 0.75rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 0.04em;
        }
        .ab-countdown-timer .timer-sep {
            color: rgba(255, 255, 255, 0.4);
            font-weight: 400;
        }
        .ab-countdown-label {
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.55);
            margin-top: 6px;
        }
        @media (max-width: 768px) {
            .ab-countdown-section {
                padding: 32px 20px;
                border-radius: var(--ab-radius-lg);
            }
            .ab-countdown-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .ab-countdown-timer {
                font-size: 1.5rem;
            }
            .ab-countdown-header h3 {
                font-size: 1.25rem;
            }
        }
        @media (max-width: 520px) {
            .ab-countdown-list {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .ab-countdown-section {
                padding: 24px 16px;
            }
            .ab-countdown-timer {
                font-size: 1.3rem;
            }
        }

        /* ========== FEATURES LIST ========== */
        .ab-features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .ab-feature-item {
            display: flex;
            gap: 16px;
            padding: 24px 20px;
            background: var(--ab-white);
            border-radius: var(--ab-radius);
            border: 1px solid var(--ab-border-light);
            box-shadow: var(--ab-shadow-sm);
            transition: all var(--ab-transition);
            align-items: flex-start;
        }
        .ab-feature-item:hover {
            box-shadow: var(--ab-shadow);
            border-color: var(--ab-accent-pale);
            transform: translateY(-2px);
        }
        .ab-feature-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--ab-radius-sm);
            background: var(--ab-accent-pale);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: var(--ab-accent);
            flex-shrink: 0;
        }
        .ab-feature-text h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--ab-primary);
            margin-bottom: 4px;
        }
        .ab-feature-text p {
            font-size: 0.85rem;
            color: var(--ab-text-weak);
            line-height: 1.6;
            margin: 0;
        }
        @media (max-width: 768px) {
            .ab-features-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
        }
        @media (max-width: 520px) {
            .ab-features-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }

        /* ========== FAQ ========== */
        .ab-faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .ab-faq-item {
            background: var(--ab-white);
            border: 1px solid var(--ab-border-light);
            border-radius: var(--ab-radius);
            margin-bottom: 10px;
            overflow: hidden;
            transition: all var(--ab-transition);
        }
        .ab-faq-item:hover {
            border-color: var(--ab-accent-pale);
        }
        .ab-faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 20px;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--ab-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            text-align: left;
            cursor: pointer;
            transition: color var(--ab-transition);
        }
        .ab-faq-question:hover {
            color: var(--ab-accent);
        }
        .ab-faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--ab-accent-pale);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.7rem;
            color: var(--ab-accent);
            flex-shrink: 0;
            transition: all var(--ab-transition);
        }
        .ab-faq-item.open .ab-faq-question .faq-icon {
            transform: rotate(45deg);
            background: var(--ab-accent);
            color: #fff;
        }
        .ab-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .ab-faq-item.open .ab-faq-answer {
            max-height: 300px;
        }
        .ab-faq-answer-inner {
            padding: 0 20px 18px;
            font-size: 0.9rem;
            color: var(--ab-text-weak);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .ab-cta-section {
            background: var(--ab-white);
            border: 1px solid var(--ab-border-light);
            border-radius: var(--ab-radius-xl);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            isolation: isolate;
            box-shadow: var(--ab-shadow);
        }
        .ab-cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(200, 150, 62, 0.08) 0%, transparent 70%);
            z-index: 1;
            pointer-events: none;
        }
        .ab-cta-inner {
            position: relative;
            z-index: 2;
        }
        .ab-cta-section h2 {
            font-size: 2rem;
            color: var(--ab-primary);
            margin-bottom: 12px;
        }
        .ab-cta-section p {
            color: var(--ab-text-weak);
            margin-bottom: 24px;
            font-size: 1.05rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .ab-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 50px;
            font-size: 0.95rem;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all var(--ab-transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .ab-btn-primary {
            background: var(--ab-accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(200, 150, 62, 0.35);
        }
        .ab-btn-primary:hover {
            background: var(--ab-accent-light);
            box-shadow: 0 6px 20px rgba(200, 150, 62, 0.45);
            transform: translateY(-2px);
            color: #fff;
        }
        .ab-btn-outline {
            background: transparent;
            color: var(--ab-primary);
            border: 2px solid var(--ab-border);
        }
        .ab-btn-outline:hover {
            border-color: var(--ab-accent);
            color: var(--ab-accent);
            background: var(--ab-accent-pale);
        }
        .ab-btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
        }
        .ab-cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        @media (max-width: 768px) {
            .ab-cta-section {
                padding: 36px 20px;
            }
            .ab-cta-section h2 {
                font-size: 1.5rem;
            }
            .ab-cta-section p {
                font-size: 0.95rem;
            }
        }

        /* ========== FOOTER ========== */
        .ab-footer {
            background: var(--ab-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
            margin-top: var(--ab-section-gap);
        }
        .ab-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.3fr;
            gap: 36px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }
        .ab-footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: #FFFFFF;
            margin-bottom: 10px;
        }
        .ab-footer h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 14px;
        }
        .ab-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .ab-footer ul li {
            margin-bottom: 8px;
        }
        .ab-footer ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.88rem;
            transition: color var(--ab-transition);
        }
        .ab-footer ul li a:hover {
            color: var(--ab-accent-light);
        }
        .ab-footer ul li i {
            color: var(--ab-accent-light);
            width: 16px;
            text-align: center;
        }
        .ab-footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }
        @media (max-width: 768px) {
            .ab-footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .ab-footer {
                padding: 40px 0 0;
            }
        }
        @media (max-width: 520px) {
            .ab-footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
        }

        /* ========== UTILITY ========== */
        .text-accent {
            color: var(--ab-accent);
        }
        .text-highlight {
            color: var(--ab-highlight);
        }
        .bg-soft {
            background: var(--ab-accent-pale);
        }
        .rounded-xl {
            border-radius: var(--ab-radius-xl);
        }
        .mb-section {
            margin-bottom: var(--ab-section-gap);
        }
        @media (max-width: 768px) {
            .mb-section {
                margin-bottom: var(--ab-section-gap-md);
            }
        }

/* roulang page: category2 */
:root {
            --ab-primary: #1a3352;
            --ab-primary-light: #264773;
            --ab-accent: #c99a5b;
            --ab-accent-light: #dbb87a;
            --ab-accent-glow: #e8c98b;
            --ab-bg: #f8f6f2;
            --ab-bg-alt: #f0ede6;
            --ab-bg-dark: #151d2b;
            --ab-text: #1e1e1e;
            --ab-text-soft: #5c5c5c;
            --ab-text-light: #8a8a8a;
            --ab-white: #ffffff;
            --ab-border: #e2ded6;
            --ab-border-light: #ede9e1;
            --ab-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --ab-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --ab-shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --ab-shadow-glow: 0 4px 24px rgba(201, 154, 91, 0.18);
            --ab-radius-sm: 8px;
            --ab-radius: 12px;
            --ab-radius-lg: 18px;
            --ab-radius-xl: 24px;
            --ab-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --ab-font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --ab-nav-height: 60px;
            --ab-topbar-height: 38px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: calc(var(--ab-nav-height) + var(--ab-topbar-height) + 20px);
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--ab-transition);
        }
        a:hover {
            color: var(--ab-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        /* ========== TOP BAR ========== */
        .ab-topbar {
            background: var(--ab-primary);
            color: rgba(255, 255, 255, 0.85);
            font-size: 0.78rem;
            height: var(--ab-topbar-height);
            line-height: var(--ab-topbar-height);
            z-index: 1040;
            position: relative;
            letter-spacing: 0.3px;
        }
        .ab-topbar .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .ab-topbar-left {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .ab-topbar-left i {
            color: var(--ab-accent-light);
            font-size: 0.7rem;
            margin-right: 3px;
        }
        .ab-topbar-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .ab-topbar-right a {
            color: rgba(255, 255, 255, 0.8);
            font-size: 0.76rem;
            transition: color var(--ab-transition);
        }
        .ab-topbar-right a:hover {
            color: var(--ab-accent-light);
        }
        .ab-topbar-tag {
            display: inline-block;
            background: var(--ab-accent);
            color: #1a1a1a;
            font-size: 0.7rem;
            font-weight: 600;
            padding: 2px 9px;
            border-radius: 20px;
            line-height: 1.5;
            animation: abPulse 2.2s ease-in-out infinite;
            letter-spacing: 0.4px;
        }
        @keyframes abPulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.82;
                transform: scale(1.04);
            }
        }

        /* ========== HEADER / NAV ========== */
        .ab-header {
            background: var(--ab-white);
            border-bottom: 1px solid var(--ab-border-light);
            height: var(--ab-nav-height);
            position: sticky;
            top: 0;
            z-index: 1030;
            box-shadow: var(--ab-shadow-sm);
            transition: box-shadow var(--ab-transition);
        }
        .ab-header.scrolled {
            box-shadow: var(--ab-shadow);
        }
        .ab-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .ab-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--ab-primary);
            letter-spacing: 0.6px;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .ab-logo-icon {
            width: 34px;
            height: 34px;
            border-radius: var(--ab-radius-sm);
            background: linear-gradient(135deg, var(--ab-primary) 0%, var(--ab-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--ab-accent-light);
            font-size: 1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .ab-nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .ab-nav-list li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--ab-text-soft);
            transition: all var(--ab-transition);
            position: relative;
            white-space: nowrap;
        }
        .ab-nav-list li a .nav-dot {
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: transparent;
            transition: all var(--ab-transition);
            flex-shrink: 0;
        }
        .ab-nav-list li a:hover {
            color: var(--ab-primary);
            background: var(--ab-bg-alt);
        }
        .ab-nav-list li a.active {
            color: var(--ab-primary);
            font-weight: 600;
            background: var(--ab-bg);
        }
        .ab-nav-list li a.active .nav-dot {
            background: var(--ab-accent);
            width: 6px;
            height: 6px;
            box-shadow: 0 0 8px var(--ab-accent-glow);
        }
        .ab-nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-left: 10px;
        }
        .ab-search-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 1px solid var(--ab-border);
            background: var(--ab-white);
            color: var(--ab-text-soft);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--ab-transition);
            font-size: 0.9rem;
        }
        .ab-search-btn:hover {
            border-color: var(--ab-accent);
            color: var(--ab-accent);
            background: var(--ab-bg);
        }
        .ab-nav-cta {
            display: inline-block;
            padding: 7px 18px;
            border-radius: 24px;
            background: var(--ab-accent);
            color: #1a1a1a !important;
            font-weight: 600;
            font-size: 0.88rem;
            transition: all var(--ab-transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }
        .ab-nav-cta:hover {
            background: var(--ab-accent-light);
            transform: translateY(-1px);
            box-shadow: var(--ab-shadow-glow);
        }
        .ab-navbar-toggler {
            display: none;
            border: none;
            background: transparent;
            font-size: 1.4rem;
            color: var(--ab-primary);
            cursor: pointer;
            padding: 6px;
        }
        @media (max-width: 992px) {
            .ab-navbar-toggler {
                display: block;
            }
            .ab-nav-list-wrapper {
                position: fixed;
                top: calc(var(--ab-topbar-height) + var(--ab-nav-height));
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--ab-white);
                z-index: 1029;
                padding: 20px 16px;
                display: none;
                flex-direction: column;
                gap: 6px;
                overflow-y: auto;
                border-top: 1px solid var(--ab-border-light);
            }
            .ab-nav-list-wrapper.show {
                display: flex;
            }
            .ab-nav-list {
                flex-direction: column;
                gap: 2px;
            }
            .ab-nav-list li a {
                padding: 12px 16px;
                border-radius: var(--ab-radius-sm);
                font-size: 1rem;
            }
            .ab-nav-search {
                margin-left: 0;
                margin-top: 12px;
                flex-direction: column;
                align-items: stretch;
            }
            .ab-nav-cta {
                text-align: center;
                margin-top: 8px;
            }
            .ab-topbar-right span:not(.ab-topbar-tag) {
                display: none;
            }
            .ab-topbar-left span {
                font-size: 0.7rem;
            }
        }
        @media (max-width: 520px) {
            .ab-topbar {
                font-size: 0.68rem;
            }
            .ab-topbar-left {
                gap: 8px;
            }
            .ab-topbar-right {
                gap: 8px;
            }
            .ab-logo {
                font-size: 1.1rem;
            }
            .ab-logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
            }
        }

        /* ========== PAGE BANNER ========== */
        .ab-page-banner {
            position: relative;
            min-height: 280px;
            display: flex;
            align-items: center;
            background: var(--ab-primary);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }
        .ab-page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 51, 82, 0.88) 0%, rgba(26, 51, 82, 0.7) 50%, rgba(21, 29, 43, 0.85) 100%);
            z-index: 1;
        }
        .ab-page-banner .container {
            position: relative;
            z-index: 2;
            padding-top: 40px;
            padding-bottom: 40px;
        }
        .ab-page-banner-content {
            max-width: 680px;
        }
        .ab-banner-badge {
            display: inline-block;
            background: var(--ab-accent);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 5px 14px;
            border-radius: 20px;
            letter-spacing: 1px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .ab-page-banner h1 {
            color: #ffffff;
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 10px;
        }
        .ab-page-banner p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 1.05rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .ab-banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.82rem;
            margin-bottom: 18px;
        }
        .ab-banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.8);
        }
        .ab-banner-breadcrumb a:hover {
            color: var(--ab-accent-light);
        }
        .ab-banner-breadcrumb span {
            color: var(--ab-accent-light);
        }
        @media (max-width: 768px) {
            .ab-page-banner {
                min-height: 220px;
            }
            .ab-page-banner h1 {
                font-size: 1.8rem;
            }
            .ab-page-banner p {
                font-size: 0.9rem;
            }
        }
        @media (max-width: 520px) {
            .ab-page-banner {
                min-height: 180px;
            }
            .ab-page-banner h1 {
                font-size: 1.5rem;
            }
            .ab-page-banner .container {
                padding-top: 28px;
                padding-bottom: 28px;
            }
        }

        /* ========== SECTION STYLES ========== */
        .ab-section {
            padding: 64px 0;
        }
        .ab-section-alt {
            background: var(--ab-bg-alt);
        }
        .ab-section-dark {
            background: var(--ab-bg-dark);
            color: #e0e0e0;
        }
        .ab-section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .ab-section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--ab-primary);
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }
        .ab-section-dark .ab-section-header h2 {
            color: #ffffff;
        }
        .ab-section-header .ab-section-subtitle {
            color: var(--ab-text-soft);
            font-size: 0.95rem;
        }
        .ab-section-dark .ab-section-header .ab-section-subtitle {
            color: rgba(255, 255, 255, 0.6);
        }
        .ab-section-header .ab-accent-line {
            display: inline-block;
            width: 48px;
            height: 3px;
            background: var(--ab-accent);
            border-radius: 3px;
            margin-bottom: 12px;
        }
        @media (max-width: 768px) {
            .ab-section {
                padding: 44px 0;
            }
            .ab-section-header h2 {
                font-size: 1.55rem;
            }
        }

        /* ========== COURSE STAGES (BRACKET STYLE) ========== */
        .ab-stage-bracket {
            display: flex;
            flex-wrap: wrap;
            gap: 0;
            position: relative;
            justify-content: center;
        }
        .ab-stage-item {
            flex: 0 0 240px;
            text-align: center;
            position: relative;
            padding: 28px 20px;
            background: var(--ab-white);
            border-radius: var(--ab-radius-lg);
            box-shadow: var(--ab-shadow);
            transition: all var(--ab-transition);
            border: 2px solid transparent;
            z-index: 1;
        }
        .ab-stage-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--ab-shadow-lg);
            border-color: var(--ab-accent-light);
        }
        .ab-stage-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--ab-primary) 0%, var(--ab-primary-light) 100%);
            color: var(--ab-accent-light);
            font-weight: 700;
            font-size: 1.3rem;
            margin-bottom: 14px;
            box-shadow: 0 4px 14px rgba(26, 51, 82, 0.3);
        }
        .ab-stage-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--ab-primary);
            margin-bottom: 6px;
        }
        .ab-stage-item p {
            font-size: 0.85rem;
            color: var(--ab-text-soft);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .ab-stage-connector {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            flex-shrink: 0;
            color: var(--ab-accent);
            font-size: 1.3rem;
            font-weight: 700;
            z-index: 0;
        }
        @media (max-width: 992px) {
            .ab-stage-bracket {
                flex-direction: column;
                align-items: center;
                gap: 0;
            }
            .ab-stage-item {
                flex: 0 0 auto;
                width: 100%;
                max-width: 400px;
            }
            .ab-stage-connector {
                transform: rotate(90deg);
                width: auto;
                height: 28px;
                font-size: 1.1rem;
            }
        }

        /* ========== COURSE CARDS GRID ========== */
        .ab-course-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .ab-course-card {
            background: var(--ab-white);
            border-radius: var(--ab-radius-lg);
            overflow: hidden;
            box-shadow: var(--ab-shadow);
            transition: all var(--ab-transition);
            border: 1px solid var(--ab-border-light);
            display: flex;
            flex-direction: column;
        }
        .ab-course-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--ab-shadow-lg);
            border-color: var(--ab-accent-light);
        }
        .ab-course-card-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .ab-course-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .ab-course-card:hover .ab-course-card-img img {
            transform: scale(1.06);
        }
        .ab-course-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--ab-accent);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 0.72rem;
            padding: 4px 10px;
            border-radius: 14px;
            letter-spacing: 0.4px;
        }
        .ab-course-card-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .ab-course-card-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--ab-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .ab-course-card-body p {
            font-size: 0.85rem;
            color: var(--ab-text-soft);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
        }
        .ab-course-card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.78rem;
            color: var(--ab-text-light);
            border-top: 1px solid var(--ab-border-light);
            padding-top: 12px;
        }
        .ab-course-card-meta i {
            color: var(--ab-accent);
            font-size: 0.7rem;
        }
        .ab-course-card-link {
            display: inline-block;
            margin-top: 10px;
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--ab-accent);
            transition: all var(--ab-transition);
        }
        .ab-course-card-link i {
            transition: transform var(--ab-transition);
            margin-left: 3px;
            font-size: 0.75rem;
        }
        .ab-course-card:hover .ab-course-card-link i {
            transform: translateX(3px);
        }
        @media (max-width: 992px) {
            .ab-course-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
        }
        @media (max-width: 620px) {
            .ab-course-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .ab-course-card-img {
                height: 160px;
            }
        }

        /* ========== SCROLLABLE TOPIC CARDS ========== */
        .ab-topic-scroll-wrap {
            position: relative;
        }
        .ab-topic-scroll {
            display: flex;
            gap: 18px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 8px;
            scrollbar-width: thin;
            scrollbar-color: var(--ab-border) transparent;
        }
        .ab-topic-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .ab-topic-scroll::-webkit-scrollbar-track {
            background: transparent;
            border-radius: 3px;
        }
        .ab-topic-scroll::-webkit-scrollbar-thumb {
            background: var(--ab-border);
            border-radius: 3px;
        }
        .ab-topic-card {
            flex: 0 0 260px;
            scroll-snap-align: start;
            background: var(--ab-white);
            border-radius: var(--ab-radius-lg);
            padding: 22px 20px;
            box-shadow: var(--ab-shadow-sm);
            border: 1px solid var(--ab-border-light);
            transition: all var(--ab-transition);
            text-align: center;
        }
        .ab-topic-card:hover {
            box-shadow: var(--ab-shadow);
            border-color: var(--ab-accent-light);
            transform: translateY(-3px);
        }
        .ab-topic-card .ab-topic-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--ab-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.4rem;
            color: var(--ab-accent);
            transition: all var(--ab-transition);
        }
        .ab-topic-card:hover .ab-topic-icon {
            background: var(--ab-accent);
            color: #fff;
        }
        .ab-topic-card h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--ab-primary);
            margin-bottom: 6px;
        }
        .ab-topic-card p {
            font-size: 0.8rem;
            color: var(--ab-text-soft);
            margin-bottom: 0;
            line-height: 1.5;
        }
        @media (max-width: 520px) {
            .ab-topic-card {
                flex: 0 0 220px;
                padding: 16px 14px;
            }
        }

        /* ========== FEATURES STRIP ========== */
        .ab-features-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .ab-feature-stat {
            text-align: center;
            padding: 24px 16px;
            background: var(--ab-white);
            border-radius: var(--ab-radius);
            box-shadow: var(--ab-shadow-sm);
            border: 1px solid var(--ab-border-light);
            transition: all var(--ab-transition);
        }
        .ab-feature-stat:hover {
            box-shadow: var(--ab-shadow);
            border-color: var(--ab-accent-light);
        }
        .ab-feature-stat .ab-stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--ab-primary);
            letter-spacing: -1px;
            line-height: 1;
            margin-bottom: 6px;
        }
        .ab-feature-stat .ab-stat-number span {
            color: var(--ab-accent);
        }
        .ab-feature-stat p {
            font-size: 0.85rem;
            color: var(--ab-text-soft);
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .ab-features-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .ab-feature-stat .ab-stat-number {
                font-size: 1.8rem;
            }
        }
        @media (max-width: 420px) {
            .ab-features-strip {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
        }

        /* ========== FAQ ========== */
        .ab-faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .ab-faq-item {
            background: var(--ab-white);
            border-radius: var(--ab-radius);
            margin-bottom: 12px;
            border: 1px solid var(--ab-border-light);
            overflow: hidden;
            transition: all var(--ab-transition);
        }
        .ab-faq-item:hover {
            border-color: var(--ab-accent-light);
        }
        .ab-faq-question {
            padding: 16px 20px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--ab-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: background var(--ab-transition);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
        }
        .ab-faq-question:hover {
            background: var(--ab-bg);
        }
        .ab-faq-question i {
            color: var(--ab-accent);
            transition: transform var(--ab-transition);
            font-size: 0.8rem;
            flex-shrink: 0;
        }
        .ab-faq-item.open .ab-faq-question i {
            transform: rotate(180deg);
        }
        .ab-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
            font-size: 0.88rem;
            color: var(--ab-text-soft);
            line-height: 1.7;
        }
        .ab-faq-item.open .ab-faq-answer {
            max-height: 300px;
            padding: 0 20px 16px;
        }

        /* ========== CTA ========== */
        .ab-cta-section {
            background: linear-gradient(135deg, var(--ab-primary) 0%, var(--ab-primary-light) 100%);
            padding: 60px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .ab-cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
        }
        .ab-cta-section .container {
            position: relative;
            z-index: 1;
        }
        .ab-cta-section h2 {
            color: #ffffff;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .ab-cta-section p {
            color: rgba(255, 255, 255, 0.78);
            font-size: 1rem;
            margin-bottom: 24px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }
        .ab-cta-btn {
            display: inline-block;
            padding: 13px 32px;
            border-radius: 28px;
            background: var(--ab-accent);
            color: #1a1a1a !important;
            font-weight: 700;
            font-size: 1rem;
            letter-spacing: 0.5px;
            transition: all var(--ab-transition);
            box-shadow: 0 4px 20px rgba(201, 154, 91, 0.35);
        }
        .ab-cta-btn:hover {
            background: var(--ab-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(201, 154, 91, 0.5);
        }
        @media (max-width: 768px) {
            .ab-cta-section h2 {
                font-size: 1.5rem;
            }
            .ab-cta-section {
                padding: 44px 0;
            }
        }

        /* ========== COUNTDOWN STRIP ========== */
        .ab-countdown-strip {
            background: var(--ab-bg-dark);
            padding: 16px 0;
            text-align: center;
            color: #fff;
        }
        .ab-countdown-inner {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }
        .ab-countdown-label {
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 0.6px;
            color: var(--ab-accent-light);
        }
        .ab-countdown-digits {
            display: flex;
            gap: 8px;
            align-items: center;
        }
        .ab-countdown-digit {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            padding: 8px 12px;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            min-width: 44px;
            text-align: center;
            letter-spacing: 1px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .ab-countdown-sep {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--ab-accent-light);
        }
        @media (max-width: 520px) {
            .ab-countdown-digit {
                font-size: 1rem;
                padding: 6px 8px;
                min-width: 34px;
            }
        }

        /* ========== FOOTER ========== */
        .ab-footer {
            background: var(--ab-primary);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 20px;
            font-size: 0.9rem;
        }
        .ab-footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 28px;
        }
        .ab-footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .ab-footer h5 {
            color: #ffffff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .ab-footer ul li {
            margin-bottom: 7px;
        }
        .ab-footer ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.85rem;
            transition: color var(--ab-transition);
        }
        .ab-footer ul li a:hover {
            color: var(--ab-accent-light);
        }
        .ab-footer ul li i {
            color: var(--ab-accent-light);
            font-size: 0.7rem;
        }
        .ab-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 18px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }
        @media (max-width: 768px) {
            .ab-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 480px) {
            .ab-footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== UTILS ========== */
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 16px;
        }
        @media (min-width: 1400px) {
            .container {
                max-width: 1240px;
            }
        }
        .ab-text-center {
            text-align: center;
        }
        .ab-mt-2 {
            margin-top: 8px;
        }
        .ab-mt-3 {
            margin-top: 16px;
        }
        .ab-mb-0 {
            margin-bottom: 0;
        }

/* roulang page: category3 */
:root {
            --ab-primary: #1a1a2e;
            --ab-primary-light: #252540;
            --ab-gold: #c9a96e;
            --ab-gold-light: #d4b87a;
            --ab-gold-dark: #b8934f;
            --ab-accent: #d4a853;
            --ab-red: #b5343a;
            --ab-red-light: #c94a50;
            --ab-bg: #faf8f4;
            --ab-bg-warm: #f5f1e8;
            --ab-dark: #0f1923;
            --ab-dark-card: #1c2433;
            --ab-text: #2c2c2c;
            --ab-text-light: #4a4a4a;
            --ab-muted: #6b7280;
            --ab-border: #e5e0d5;
            --ab-border-light: #f0ebe0;
            --ab-white: #ffffff;
            --ab-shadow-sm: 0 2px 8px rgba(15, 25, 35, 0.06);
            --ab-shadow: 0 4px 20px rgba(15, 25, 35, 0.10);
            --ab-shadow-lg: 0 12px 40px rgba(15, 25, 35, 0.15);
            --ab-shadow-gold: 0 8px 32px rgba(201, 169, 110, 0.25);
            --ab-radius-sm: 8px;
            --ab-radius: 12px;
            --ab-radius-lg: 20px;
            --ab-radius-xl: 28px;
            --ab-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --ab-transition-fast: 0.18s ease;
            --ab-font-heading: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --ab-font-body: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --ab-nav-height: 64px;
            --ab-nav-top-height: 38px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--ab-font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--ab-text);
            background-color: var(--ab-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            padding-top: calc(var(--ab-nav-top-height) + var(--ab-nav-height));
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--ab-transition-fast);
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

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

        ::selection {
            background-color: var(--ab-gold);
            color: var(--ab-dark);
        }

        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }
        ::-webkit-scrollbar-track {
            background: transparent;
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb {
            background: #c0b9a8;
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #a09888;
        }

        /* ========== TOP BAR ========== */
        .ab-topbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: var(--ab-dark);
            height: var(--ab-nav-top-height);
            display: flex;
            align-items: center;
            font-size: 0.8rem;
            color: #b0b8c1;
        }
        .ab-topbar .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .ab-topbar-left {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .ab-topbar-left span {
            display: flex;
            align-items: center;
            gap: 5px;
        }
        .ab-topbar-left i {
            font-size: 0.7rem;
            color: var(--ab-gold);
        }
        .ab-topbar-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .ab-topbar-right a {
            color: #b0b8c1;
            font-size: 0.78rem;
            transition: color var(--ab-transition-fast);
            white-space: nowrap;
        }
        .ab-topbar-right a:hover {
            color: var(--ab-gold-light);
        }
        .ab-topbar-hot {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(201, 169, 110, 0.15);
            color: var(--ab-gold-light);
            padding: 3px 10px;
            border-radius: 20px;
            font-size: 0.72rem;
            animation: abPulse 2.5s ease-in-out infinite;
        }
        @keyframes abPulse {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }
        .ab-topbar-hot i {
            font-size: 0.55rem;
        }

        /* ========== MAIN NAV ========== */
        .ab-header {
            position: fixed;
            top: var(--ab-nav-top-height);
            left: 0;
            right: 0;
            z-index: 1040;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            height: var(--ab-nav-height);
            border-bottom: 1px solid var(--ab-border);
            transition: box-shadow var(--ab-transition);
        }
        .ab-header.scrolled {
            box-shadow: 0 4px 24px rgba(15, 25, 35, 0.12);
        }
        .ab-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .ab-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--ab-font-heading);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--ab-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .ab-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--ab-gold) 0%, var(--ab-gold-dark) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: 0 3px 12px rgba(201, 169, 110, 0.35);
        }
        .ab-nav-list {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .ab-nav-list li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--ab-text);
            transition: all var(--ab-transition-fast);
            position: relative;
            white-space: nowrap;
        }
        .ab-nav-list li a .nav-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: transparent;
            transition: all var(--ab-transition-fast);
        }
        .ab-nav-list li a:hover {
            color: var(--ab-gold-dark);
            background: rgba(201, 169, 110, 0.06);
        }
        .ab-nav-list li a.active {
            color: var(--ab-gold-dark);
            font-weight: 600;
            background: rgba(201, 169, 110, 0.10);
        }
        .ab-nav-list li a.active .nav-dot {
            background: var(--ab-gold);
            width: 8px;
            height: 8px;
            box-shadow: 0 0 8px rgba(201, 169, 110, 0.5);
        }
        .ab-nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .ab-nav-search input {
            width: 180px;
            padding: 7px 14px;
            border: 1px solid var(--ab-border);
            border-radius: 20px;
            font-size: 0.85rem;
            outline: none;
            transition: all var(--ab-transition-fast);
            background: var(--ab-bg-warm);
            color: var(--ab-text);
        }
        .ab-nav-search input:focus {
            border-color: var(--ab-gold);
            box-shadow: 0 0 0 3px rgba(201, 169, 110, 0.08);
            width: 210px;
            background: #fff;
        }
        .ab-nav-search button {
            background: var(--ab-gold);
            border: none;
            color: #fff;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            transition: all var(--ab-transition-fast);
            flex-shrink: 0;
        }
        .ab-nav-search button:hover {
            background: var(--ab-gold-dark);
            box-shadow: 0 4px 14px rgba(201, 169, 110, 0.4);
        }
        .ab-mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--ab-text);
            padding: 6px;
            cursor: pointer;
        }

        /* ========== HERO ========== */
        .ab-hero-category {
            position: relative;
            background: var(--ab-dark);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 0 90px;
            overflow: hidden;
            min-height: 480px;
            display: flex;
            align-items: center;
        }
        .ab-hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 25, 35, 0.88) 0%, rgba(26, 26, 46, 0.78) 40%, rgba(15, 25, 35, 0.9) 100%);
            z-index: 1;
        }
        .ab-hero-category::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 350px;
            height: 350px;
            border: 1px solid rgba(201, 169, 110, 0.2);
            border-radius: 50%;
            z-index: 1;
            animation: abFloatRing 8s ease-in-out infinite;
        }
        @keyframes abFloatRing {
            0%,
            100% {
                transform: translate(0, 0) scale(1);
            }
            25% {
                transform: translate(-15px, 10px) scale(1.03);
            }
            50% {
                transform: translate(5px, -8px) scale(0.98);
            }
            75% {
                transform: translate(12px, 5px) scale(1.02);
            }
        }
        .ab-hero-category .container {
            position: relative;
            z-index: 2;
        }
        .ab-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201, 169, 110, 0.2);
            border: 1px solid rgba(201, 169, 110, 0.35);
            color: var(--ab-gold-light);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 20px;
            animation: abFadeInUp 0.8s ease-out;
        }
        @keyframes abFadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .ab-hero-category h1 {
            font-family: var(--ab-font-heading);
            font-size: 3rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 16px;
            animation: abFadeInUp 0.8s ease-out 0.1s both;
        }
        .ab-hero-category h1 .gold-text {
            color: var(--ab-gold-light);
            position: relative;
        }
        .ab-hero-category h1 .gold-text::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--ab-gold);
            border-radius: 2px;
            opacity: 0.5;
        }
        .ab-hero-category .hero-desc {
            font-size: 1.1rem;
            color: #c5cdd5;
            max-width: 560px;
            line-height: 1.8;
            animation: abFadeInUp 0.8s ease-out 0.2s both;
        }
        .ab-hero-countdown-wrap {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 28px;
            animation: abFadeInUp 0.8s ease-out 0.3s both;
        }
        .ab-countdown-label {
            color: #c5cdd5;
            font-size: 0.9rem;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .ab-countdown-grid {
            display: flex;
            gap: 10px;
        }
        .ab-countdown-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--ab-radius);
            padding: 10px 16px;
            text-align: center;
            min-width: 56px;
            backdrop-filter: blur(6px);
        }
        .ab-countdown-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--ab-gold-light);
            line-height: 1;
            font-family: var(--ab-font-heading);
        }
        .ab-countdown-unit {
            font-size: 0.7rem;
            color: #8899aa;
            margin-top: 2px;
            letter-spacing: 0.5px;
        }
        .ab-hero-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 24px;
            background: linear-gradient(135deg, var(--ab-gold) 0%, var(--ab-gold-dark) 100%);
            color: #fff;
            padding: 13px 28px;
            border-radius: 28px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            transition: all var(--ab-transition);
            animation: abFadeInUp 0.8s ease-out 0.35s both;
            letter-spacing: 0.5px;
        }
        .ab-hero-cta:hover {
            box-shadow: var(--ab-shadow-gold);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ========== SECTION COMMON ========== */
        .ab-section {
            padding: 70px 0;
        }
        .ab-section-dark {
            background: var(--ab-dark);
            color: #e0e5ea;
        }
        .ab-section-warm {
            background: var(--ab-bg-warm);
        }
        .ab-section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .ab-section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--ab-gold-dark);
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .ab-section-title {
            font-family: var(--ab-font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--ab-primary);
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }
        .ab-section-dark .ab-section-title {
            color: #fff;
        }
        .ab-section-subtitle {
            font-size: 0.95rem;
            color: var(--ab-muted);
            max-width: 520px;
            margin: 0 auto;
        }
        .ab-section-dark .ab-section-subtitle {
            color: #9aa5b0;
        }
        .ab-divider-gold {
            width: 50px;
            height: 3px;
            background: var(--ab-gold);
            border-radius: 2px;
            margin: 14px auto;
        }

        /* ========== HORIZONTAL SCROLL CARDS ========== */
        .ab-scroll-wrap {
            position: relative;
            margin: 0 -15px;
            padding: 0 15px;
        }
        .ab-scroll-track {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 10px 0 20px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scroll-behavior: smooth;
        }
        .ab-scroll-track::-webkit-scrollbar {
            height: 5px;
        }
        .ab-scroll-track::-webkit-scrollbar-track {
            background: #e8e3d8;
            border-radius: 3px;
            margin: 0 40px;
        }
        .ab-scroll-track::-webkit-scrollbar-thumb {
            background: var(--ab-gold);
            border-radius: 3px;
        }
        .ab-scroll-card {
            flex: 0 0 300px;
            scroll-snap-align: start;
            background: #fff;
            border-radius: var(--ab-radius-lg);
            overflow: hidden;
            box-shadow: var(--ab-shadow);
            transition: all var(--ab-transition);
            border: 1px solid var(--ab-border-light);
            cursor: pointer;
        }
        .ab-scroll-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--ab-shadow-lg);
            border-color: var(--ab-gold-light);
        }
        .ab-scroll-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .ab-scroll-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .ab-scroll-card:hover .ab-scroll-card-img img {
            transform: scale(1.06);
        }
        .ab-scroll-card-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--ab-gold);
            color: #fff;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.75rem;
            font-weight: 600;
            z-index: 2;
        }
        .ab-scroll-card-body {
            padding: 18px;
        }
        .ab-scroll-card-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--ab-primary);
            margin-bottom: 6px;
        }
        .ab-scroll-card-body p {
            font-size: 0.85rem;
            color: var(--ab-muted);
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .ab-scroll-card-meta {
            display: flex;
            gap: 14px;
            font-size: 0.78rem;
            color: #999;
        }
        .ab-scroll-card-meta i {
            color: var(--ab-gold);
            margin-right: 3px;
        }

        /* ========== RANKING TABLE ========== */
        .ab-ranking-table-wrap {
            background: #fff;
            border-radius: var(--ab-radius-lg);
            overflow: hidden;
            box-shadow: var(--ab-shadow);
            border: 1px solid var(--ab-border-light);
        }
        .ab-ranking-row {
            display: flex;
            align-items: center;
            padding: 16px 24px;
            gap: 16px;
            border-bottom: 1px solid var(--ab-border-light);
            transition: background var(--ab-transition-fast);
        }
        .ab-ranking-row:last-child {
            border-bottom: none;
        }
        .ab-ranking-row:hover {
            background: #fdfaf4;
        }
        .ab-ranking-rank {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .ab-ranking-rank.gold {
            background: linear-gradient(135deg, #f0d78c, #c9a96e);
            color: #fff;
        }
        .ab-ranking-rank.silver {
            background: linear-gradient(135deg, #d5d5d5, #a8a8a8);
            color: #fff;
        }
        .ab-ranking-rank.bronze {
            background: linear-gradient(135deg, #e0b88a, #b8784a);
            color: #fff;
        }
        .ab-ranking-rank.normal {
            background: #f0ebe0;
            color: #888;
        }
        .ab-ranking-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            object-fit: cover;
            flex-shrink: 0;
            border: 2px solid var(--ab-border-light);
        }
        .ab-ranking-info {
            flex: 1;
            min-width: 0;
        }
        .ab-ranking-name {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--ab-primary);
        }
        .ab-ranking-tagline {
            font-size: 0.78rem;
            color: var(--ab-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .ab-ranking-score {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--ab-gold-dark);
            flex-shrink: 0;
        }

        /* ========== BRACKET / STAGES ========== */
        .ab-stages-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 0;
            position: relative;
        }
        .ab-stage-item {
            text-align: center;
            padding: 28px 16px;
            position: relative;
            z-index: 1;
        }
        .ab-stage-item::after {
            content: '';
            position: absolute;
            top: 50%;
            right: -12px;
            width: 24px;
            height: 2px;
            background: var(--ab-gold);
            z-index: 0;
        }
        .ab-stage-item:last-child::after {
            display: none;
        }
        .ab-stage-icon {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: #fff;
            border: 3px solid var(--ab-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 1.5rem;
            color: var(--ab-gold-dark);
            position: relative;
            z-index: 2;
            transition: all var(--ab-transition);
        }
        .ab-stage-item:hover .ab-stage-icon {
            background: var(--ab-gold);
            color: #fff;
            box-shadow: var(--ab-shadow-gold);
            transform: scale(1.08);
        }
        .ab-stage-label {
            font-weight: 700;
            font-size: 1rem;
            color: var(--ab-primary);
        }
        .ab-stage-desc {
            font-size: 0.8rem;
            color: var(--ab-muted);
            margin-top: 2px;
        }

        /* ========== STATS ========== */
        .ab-stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .ab-stat-card {
            text-align: center;
            padding: 30px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--ab-radius-lg);
            transition: all var(--ab-transition);
        }
        .ab-stat-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(201, 169, 110, 0.35);
            transform: translateY(-4px);
        }
        .ab-stat-num {
            font-size: 3rem;
            font-weight: 800;
            color: var(--ab-gold-light);
            font-family: var(--ab-font-heading);
            line-height: 1;
            letter-spacing: 1px;
        }
        .ab-stat-unit {
            font-size: 1.2rem;
            font-weight: 400;
            color: #8899aa;
        }
        .ab-stat-label {
            font-size: 0.9rem;
            color: #9aa5b0;
            margin-top: 6px;
        }

        /* ========== STORY CARDS ========== */
        .ab-story-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }
        .ab-story-card {
            background: #fff;
            border-radius: var(--ab-radius-lg);
            overflow: hidden;
            box-shadow: var(--ab-shadow);
            border: 1px solid var(--ab-border-light);
            display: flex;
            flex-direction: column;
            transition: all var(--ab-transition);
        }
        .ab-story-card:hover {
            box-shadow: var(--ab-shadow-lg);
            transform: translateY(-4px);
        }
        .ab-story-card-img {
            height: 220px;
            overflow: hidden;
        }
        .ab-story-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .ab-story-card:hover .ab-story-card-img img {
            transform: scale(1.05);
        }
        .ab-story-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .ab-story-card-body h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--ab-primary);
            margin-bottom: 8px;
        }
        .ab-story-card-body p {
            font-size: 0.9rem;
            color: var(--ab-text-light);
            line-height: 1.6;
            flex: 1;
        }
        .ab-story-card-footer {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid var(--ab-border-light);
        }
        .ab-story-avatar-sm {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            object-fit: cover;
        }
        .ab-story-author {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--ab-primary);
        }
        .ab-story-date {
            font-size: 0.75rem;
            color: #999;
        }

        /* ========== TESTIMONIALS ========== */
        .ab-testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .ab-testimonial-card {
            background: #fff;
            border-radius: var(--ab-radius-lg);
            padding: 28px;
            box-shadow: var(--ab-shadow);
            border: 1px solid var(--ab-border-light);
            position: relative;
            transition: all var(--ab-transition);
        }
        .ab-testimonial-card:hover {
            box-shadow: var(--ab-shadow-lg);
            transform: translateY(-3px);
        }
        .ab-testimonial-card::before {
            content: '\201C';
            font-size: 4rem;
            color: var(--ab-gold);
            opacity: 0.25;
            position: absolute;
            top: 10px;
            left: 20px;
            line-height: 1;
            font-family: Georgia, serif;
        }
        .ab-testimonial-text {
            font-size: 0.93rem;
            color: var(--ab-text-light);
            line-height: 1.7;
            position: relative;
            z-index: 1;
            min-height: 90px;
        }
        .ab-testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--ab-border-light);
        }
        .ab-testimonial-author img {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            object-fit: cover;
        }
        .ab-testimonial-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--ab-primary);
        }
        .ab-testimonial-role {
            font-size: 0.75rem;
            color: #999;
        }

        /* ========== CTA SECTION ========== */
        .ab-cta-section {
            background: var(--ab-dark);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            position: relative;
            padding: 70px 0;
        }
        .ab-cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 25, 35, 0.9) 0%, rgba(26, 26, 46, 0.85) 100%);
            z-index: 1;
        }
        .ab-cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .ab-cta-section h2 {
            font-family: var(--ab-font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .ab-cta-section p {
            color: #c5cdd5;
            font-size: 1rem;
            max-width: 500px;
            margin: 0 auto 28px;
        }
        .ab-btn-gold {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--ab-gold) 0%, var(--ab-gold-dark) 100%);
            color: #fff;
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            transition: all var(--ab-transition);
            letter-spacing: 0.5px;
        }
        .ab-btn-gold:hover {
            box-shadow: var(--ab-shadow-gold);
            transform: translateY(-3px);
            color: #fff;
        }
        .ab-btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 14px 32px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: all var(--ab-transition);
            letter-spacing: 0.5px;
        }
        .ab-btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .ab-footer {
            background: var(--ab-dark);
            color: #b0b8c1;
            padding: 50px 0 24px;
            font-size: 0.9rem;
        }
        .ab-footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .ab-footer-brand {
            font-family: var(--ab-font-heading);
            font-weight: 700;
            font-size: 1.3rem;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .ab-footer h5 {
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .ab-footer ul li {
            margin-bottom: 7px;
        }
        .ab-footer ul li a {
            color: #8899aa;
            transition: color var(--ab-transition-fast);
            font-size: 0.85rem;
        }
        .ab-footer ul li a:hover {
            color: var(--ab-gold-light);
        }
        .ab-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: #667788;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .ab-stages-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .ab-stage-item::after {
                display: none;
            }
            .ab-stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .ab-story-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .ab-testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .ab-footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .ab-hero-category h1 {
                font-size: 2.4rem;
            }
            .ab-nav-search input {
                width: 130px;
            }
            .ab-nav-search input:focus {
                width: 150px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: calc(var(--ab-nav-top-height) + 56px);
            }
            :root {
                --ab-nav-height: 56px;
            }
            .ab-topbar {
                font-size: 0.7rem;
            }
            .ab-topbar-left span:nth-child(2),
            .ab-topbar-left span:nth-child(3) {
                display: none;
            }
            .ab-topbar-right a {
                font-size: 0.7rem;
            }
            .ab-mobile-toggle {
                display: block;
            }
            .ab-nav-list {
                position: fixed;
                top: calc(var(--ab-nav-top-height) + var(--ab-nav-height));
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px;
                gap: 4px;
                border-bottom: 2px solid var(--ab-border);
                box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
                display: none;
                z-index: 1030;
            }
            .ab-nav-list.open {
                display: flex;
            }
            .ab-nav-list li a {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--ab-radius-sm);
                font-size: 1rem;
            }
            .ab-nav-search {
                display: none;
            }
            .ab-nav-search-mobile {
                display: flex;
                padding: 10px 16px;
                gap: 8px;
                border-top: 1px solid var(--ab-border-light);
                margin-top: 8px;
                padding-top: 14px;
            }
            .ab-nav-search-mobile input {
                flex: 1;
                padding: 9px 14px;
                border-radius: 20px;
                border: 1px solid var(--ab-border);
                font-size: 0.9rem;
                background: var(--ab-bg-warm);
            }
            .ab-nav-search-mobile button {
                background: var(--ab-gold);
                border: none;
                color: #fff;
                border-radius: 50%;
                width: 36px;
                height: 36px;
                font-size: 0.85rem;
            }
            .ab-hero-category {
                padding: 56px 0 60px;
                min-height: 380px;
            }
            .ab-hero-category h1 {
                font-size: 1.9rem;
            }
            .ab-hero-category .hero-desc {
                font-size: 0.9rem;
                max-width: 100%;
            }
            .ab-countdown-grid {
                gap: 6px;
            }
            .ab-countdown-item {
                padding: 8px 10px;
                min-width: 44px;
            }
            .ab-countdown-num {
                font-size: 1.4rem;
            }
            .ab-section {
                padding: 44px 0;
            }
            .ab-section-title {
                font-size: 1.6rem;
            }
            .ab-scroll-card {
                flex: 0 0 250px;
            }
            .ab-stages-grid {
                grid-template-columns: 1fr 1fr;
            }
            .ab-stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .ab-stat-num {
                font-size: 2.2rem;
            }
            .ab-story-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .ab-testimonial-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .ab-footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .ab-cta-section h2 {
                font-size: 1.6rem;
            }
            .ab-ranking-row {
                padding: 12px 14px;
                gap: 10px;
            }
            .ab-ranking-rank {
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
            }
        }

        @media (max-width: 520px) {
            .ab-hero-category h1 {
                font-size: 1.5rem;
            }
            .ab-countdown-grid {
                gap: 4px;
            }
            .ab-countdown-item {
                padding: 6px 8px;
                min-width: 40px;
                border-radius: 6px;
            }
            .ab-countdown-num {
                font-size: 1.2rem;
            }
            .ab-countdown-unit {
                font-size: 0.6rem;
            }
            .ab-stages-grid {
                grid-template-columns: 1fr;
            }
            .ab-stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .ab-stat-card {
                padding: 18px 12px;
            }
            .ab-stat-num {
                font-size: 1.8rem;
            }
            .ab-scroll-card {
                flex: 0 0 220px;
            }
            .ab-scroll-card-img {
                height: 150px;
            }
        }