/* roulang page: index */
:root {
            --color-primary: #1B2A4A;
            --color-primary-light: #253A63;
            --color-primary-dark: #0F1A2E;
            --color-accent: #C8A45C;
            --color-accent-light: #D9BC7E;
            --color-accent-dark: #A8863D;
            --color-highlight: #D44C3A;
            --color-bg: #F8F9FA;
            --color-bg-alt: #EDF0F4;
            --color-bg-dark: #0F1A2E;
            --color-text: #1a1a1a;
            --color-text-light: #6c757d;
            --color-text-inverse: #ffffff;
            --color-border: #e0e4e8;
            --color-border-light: #eef1f5;
            --color-success: #2D8B4E;
            --color-card-bg: #ffffff;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.14), 0 8px 20px rgba(0, 0, 0, 0.06);
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.40s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            --nav-height: 68px;
            --section-gap: 80px;
            --section-gap-sm: 48px;
        }

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

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

        body {
            font-family: var(--font-body);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.72;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent);
        }
        a:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 3px;
        }

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

        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

        input,
        textarea {
            font-family: inherit;
        }

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.28;
            margin: 0;
            color: var(--color-primary);
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            :root {
                --section-gap: 52px;
                --section-gap-sm: 36px;
            }
        }

        /* ========== HEADER & NAV ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--nav-height);
            transition: box-shadow var(--transition-base), background var(--transition-base);
            display: flex;
            align-items: center;
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.98);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }

        .brand-logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-fast);
        }
        .brand-logo:hover {
            color: var(--color-accent-dark);
        }
        .brand-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--color-text);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links li a:hover {
            color: var(--color-accent-dark);
            background: rgba(200, 164, 92, 0.07);
        }
        .nav-links li a.active {
            color: var(--color-primary);
            background: rgba(27, 42, 74, 0.06);
            font-weight: 600;
        }
        .nav-links li a.nav-cta {
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: 30px;
            transition: all var(--transition-base);
            box-shadow: 0 2px 8px rgba(200, 164, 92, 0.30);
        }
        .nav-links li a.nav-cta:hover {
            background: var(--color-accent-dark);
            color: #fff;
            box-shadow: 0 4px 14px rgba(200, 164, 92, 0.40);
            transform: translateY(-1px);
        }

        .nav-toggle-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-primary);
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .nav-toggle-btn:hover {
            background: rgba(27, 42, 74, 0.06);
        }

        @media (max-width: 860px) {
            .nav-links {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 12px 16px;
                border-bottom: 1px solid var(--color-border-light);
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: transform var(--transition-base), opacity var(--transition-base);
                z-index: 1040;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
            }
            .nav-links li a {
                display: block;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
                font-size: 1rem;
            }
            .nav-links li a.nav-cta {
                text-align: center;
                margin-top: 6px;
                border-radius: var(--radius-sm);
            }
            .nav-toggle-btn {
                display: block;
            }
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            background-position: center 30%;
            margin-top: 0;
            padding-top: var(--nav-height);
            isolation: isolate;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 26, 46, 0.72) 0%, rgba(27, 42, 74, 0.78) 40%, rgba(15, 26, 46, 0.88) 100%);
            z-index: 0;
        }
        .hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 780px;
            padding: 40px 24px;
        }
        .hero-badge {
            display: inline-block;
            background: rgba(200, 164, 92, 0.22);
            border: 1px solid rgba(200, 164, 92, 0.45);
            color: var(--color-accent-light);
            padding: 7px 18px;
            border-radius: 30px;
            font-size: 0.88rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }
        .hero-content h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 18px;
            letter-spacing: 0.03em;
            line-height: 1.18;
        }
        .hero-content h1 .accent-word {
            color: var(--color-accent);
            position: relative;
        }
        .hero-content .hero-subtitle {
            font-size: 1.18rem;
            color: rgba(255, 255, 255, 0.82);
            margin-bottom: 36px;
            line-height: 1.7;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }
        .btn-hero-primary {
            background: var(--color-accent);
            color: #fff;
            border: none;
            padding: 13px 30px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            box-shadow: 0 4px 16px rgba(200, 164, 92, 0.35);
            letter-spacing: 0.02em;
        }
        .btn-hero-primary:hover {
            background: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(200, 164, 92, 0.45);
            color: #fff;
        }
        .btn-hero-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.55);
            padding: 13px 30px;
            border-radius: 30px;
            font-weight: 500;
            font-size: 1rem;
            transition: all var(--transition-base);
            backdrop-filter: blur(4px);
        }
        .btn-hero-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.10);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-stats-row {
            display: flex;
            gap: 32px;
            justify-content: center;
            margin-top: 44px;
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
            color: #fff;
        }
        .hero-stat .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: 0.02em;
        }
        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 2px;
        }

        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 2.1rem;
            }
            .hero-content .hero-subtitle {
                font-size: 1rem;
            }
            .hero-stats-row {
                gap: 20px;
                margin-top: 30px;
            }
            .hero-stat .stat-number {
                font-size: 1.5rem;
            }
            .hero-section {
                min-height: auto;
                padding-bottom: 60px;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                padding: 11px 22px;
                font-size: 0.9rem;
                width: 100%;
                max-width: 260px;
                justify-content: center;
                display: flex;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
        }

        /* ========== SECTIONS GENERAL ========== */
        .section {
            padding: var(--section-gap) 0;
        }
        .section-alt {
            background: var(--color-bg-alt);
        }
        .section-dark {
            background: var(--color-bg-dark);
            color: var(--color-text-inverse);
        }
        .section-dark h2,
        .section-dark h3 {
            color: #fff;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .section-header .section-subtitle {
            font-size: 1.02rem;
            color: var(--color-text-light);
            max-width: 560px;
            margin: 0 auto;
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }
        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 1.6rem;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ========== DATA RANKING CARDS ========== */
        .ranking-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .ranking-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .ranking-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .ranking-card .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 12px;
        }
        .rank-gold {
            background: linear-gradient(135deg, #f0c040, #c8a020);
            color: #fff;
        }
        .rank-silver {
            background: linear-gradient(135deg, #bcc6d0, #8a95a5);
            color: #fff;
        }
        .rank-bronze {
            background: linear-gradient(135deg, #d4a574, #a0683a);
            color: #fff;
        }
        .rank-default {
            background: var(--color-bg-alt);
            color: var(--color-text-light);
        }
        .ranking-card .rank-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-primary);
            margin-bottom: 4px;
        }
        .ranking-card .rank-label {
            font-size: 0.9rem;
            color: var(--color-text-light);
        }
        .ranking-card.rank-highlight {
            border: 2px solid var(--color-accent);
            box-shadow: var(--shadow-md);
        }
        @media (max-width: 992px) {
            .ranking-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .ranking-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== CATEGORY CARDS ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .category-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-xl);
            border-color: transparent;
        }
        .category-card .card-img-wrap {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .category-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .category-card .card-body-custom {
            padding: 22px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .category-card .card-body-custom h3 {
            font-size: 1.18rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-card .card-body-custom p {
            font-size: 0.93rem;
            color: var(--color-text-light);
            margin-bottom: 16px;
            flex: 1;
        }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            color: var(--color-accent-dark);
            font-size: 0.9rem;
            transition: gap var(--transition-fast);
        }
        .category-card .card-link:hover {
            gap: 10px;
            color: var(--color-accent-dark);
        }
        @media (max-width: 768px) {
            .category-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .category-card .card-img-wrap {
                height: 180px;
            }
        }

        /* ========== NEWS LIST ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            border: 1px solid transparent;
            transition: all var(--transition-fast);
        }
        .news-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-md);
            transform: translateX(3px);
        }
        .news-item .news-thumb {
            width: 72px;
            height: 56px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-item .news-info {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-info h4 {
            font-size: 0.98rem;
            font-weight: 600;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-item .news-info .news-meta {
            font-size: 0.82rem;
            color: var(--color-text-light);
        }
        .news-item .news-arrow {
            flex-shrink: 0;
            color: var(--color-accent);
            font-size: 1.1rem;
            transition: transform var(--transition-fast);
        }
        .news-item:hover .news-arrow {
            transform: translateX(4px);
        }
        .news-empty {
            text-align: center;
            padding: 40px;
            color: var(--color-text-light);
            font-size: 0.95rem;
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            border: 1px dashed var(--color-border);
        }
        @media (max-width: 520px) {
            .news-item {
                flex-wrap: wrap;
                gap: 10px;
                padding: 14px;
            }
            .news-item .news-thumb {
                width: 100%;
                height: 140px;
                border-radius: var(--radius-sm);
            }
        }

        /* ========== PROJECT SHOWCASE ========== */
        .project-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .project-card {
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
        }
        .project-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .project-card .project-img {
            height: 220px;
            overflow: hidden;
        }
        .project-card .project-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .project-card:hover .project-img img {
            transform: scale(1.05);
        }
        .project-card .project-body {
            padding: 20px 22px;
        }
        .project-card .project-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .project-card .project-body p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-bottom: 0;
        }
        .project-card .project-tag {
            display: inline-block;
            background: rgba(200, 164, 92, 0.12);
            color: var(--color-accent-dark);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 10px;
        }
        @media (max-width: 768px) {
            .project-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .project-card .project-img {
                height: 180px;
            }
        }

        /* ========== PROCESS / TIMELINE ========== */
        .process-timeline {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }
        .process-step {
            flex: 1;
            min-width: 180px;
            max-width: 240px;
            text-align: center;
            background: var(--color-card-bg);
            border-radius: var(--radius-lg);
            padding: 28px 18px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
        }
        .process-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .process-step .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 800;
            font-size: 1.3rem;
            margin-bottom: 14px;
            transition: all var(--transition-base);
        }
        .process-step:hover .step-num {
            background: var(--color-accent);
            transform: scale(1.08);
        }
        .process-step h4 {
            font-size: 1.02rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .process-step p {
            font-size: 0.85rem;
            color: var(--color-text-light);
            margin: 0;
        }
        .process-connector {
            display: flex;
            align-items: center;
            font-size: 1.4rem;
            color: var(--color-accent);
            flex-shrink: 0;
            align-self: center;
        }
        @media (max-width: 768px) {
            .process-timeline {
                flex-direction: column;
                align-items: center;
            }
            .process-step {
                max-width: 100%;
                width: 100%;
            }
            .process-connector {
                transform: rotate(90deg);
                margin: 4px 0;
            }
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            background: none;
            border: none;
            font-weight: 600;
            font-size: 0.98rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            color: var(--color-primary);
            transition: color var(--transition-fast);
        }
        .faq-question:hover {
            color: var(--color-accent-dark);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-fast);
            font-size: 0.9rem;
            color: var(--color-accent);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            text-align: center;
            padding: 60px 0;
            border-radius: 0;
        }
        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.78);
            font-size: 1.05rem;
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta {
            background: var(--color-accent);
            color: #fff;
            border: none;
            padding: 14px 34px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1.02rem;
            transition: all var(--transition-base);
            box-shadow: 0 4px 18px rgba(200, 164, 92, 0.40);
            letter-spacing: 0.02em;
        }
        .btn-cta:hover {
            background: #fff;
            color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 255, 255, 0.25);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 28px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== UTILS ========== */
        .text-accent {
            color: var(--color-accent) !important;
        }
        .bg-soft-accent {
            background: rgba(200, 164, 92, 0.08);
        }
        .divider {
            width: 50px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px;
            margin: 0 auto 20px;
        }

/* roulang page: category1 */
:root {
            --color-primary: #0a1f3d;
            --color-primary-light: #132d56;
            --color-accent: #c49b3f;
            --color-accent-light: #d4af5e;
            --color-accent-pale: #fdf3e0;
            --color-bg: #f7f8fa;
            --color-surface: #ffffff;
            --color-text: #1a1d24;
            --color-text-soft: #5a6072;
            --color-text-muted: #8b919e;
            --color-border: #e2e5ec;
            --color-border-light: #eef0f5;
            --color-success: #2d8a56;
            --color-danger: #c0392b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-xs: 0 1px 2px rgba(10, 31, 61, 0.04);
            --shadow-sm: 0 2px 8px rgba(10, 31, 61, 0.06);
            --shadow-md: 0 6px 20px rgba(10, 31, 61, 0.08);
            --shadow-lg: 0 12px 36px rgba(10, 31, 61, 0.10);
            --shadow-xl: 0 20px 50px rgba(10, 31, 61, 0.12);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --header-height: 70px;
        }

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

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

        body {
            font-family: var(--font-body);
            color: var(--color-text);
            background-color: var(--color-bg);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            padding-top: var(--header-height);
            overflow-x: hidden;
        }

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

        .container-custom {
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ========== HEADER ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition-base), background var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255, 255, 255, 0.97);
        }
        .header-inner {
            max-width: 1240px;
            margin: 0 auto;
            width: 100%;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.22rem;
            color: var(--color-primary);
            white-space: nowrap;
            letter-spacing: 0.01em;
            transition: opacity var(--transition-fast);
        }
        .brand-logo:hover {
            color: var(--color-primary);
            opacity: 0.85;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(10, 31, 61, 0.18);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links li a {
            display: inline-block;
            padding: 8px 15px;
            border-radius: 20px;
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--color-text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-links li a:hover {
            color: var(--color-primary);
            background: rgba(10, 31, 61, 0.04);
        }
        .nav-links li a.active {
            color: var(--color-primary);
            background: rgba(10, 31, 61, 0.07);
            font-weight: 600;
        }
        .nav-cta {
            background: var(--color-accent) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: 22px !important;
            transition: all var(--transition-base) !important;
            box-shadow: 0 2px 8px rgba(196, 155, 63, 0.25);
        }
        .nav-cta:hover {
            background: var(--color-accent-light) !important;
            box-shadow: 0 4px 14px rgba(196, 155, 63, 0.35) !important;
            transform: translateY(-1px);
            color: #fff !important;
        }
        .nav-toggle-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .nav-toggle-btn:hover {
            background: rgba(10, 31, 61, 0.05);
        }
        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }
            .nav-links li a {
                padding: 7px 10px;
                font-size: 0.85rem;
            }
            .nav-cta {
                padding: 7px 14px !important;
                font-size: 0.85rem !important;
            }
        }
        @media (max-width: 860px) {
            .nav-toggle-btn {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 12px 20px 20px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--color-border-light);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav-links.show {
                display: flex;
            }
            .nav-links li a {
                display: block;
                padding: 12px 16px;
                border-radius: var(--radius-md);
                font-size: 0.95rem;
                text-align: center;
            }
            .nav-cta {
                margin-top: 4px;
                text-align: center;
            }
        }

        /* ========== SECTION STYLES ========== */
        .section-padding {
            padding: 64px 0;
        }
        @media (max-width: 768px) {
            .section-padding {
                padding: 40px 0;
            }
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent);
            background: var(--color-accent-pale);
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2rem;
            color: var(--color-primary);
            margin-bottom: 10px;
            letter-spacing: 0.01em;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-soft);
            max-width: 600px;
            line-height: 1.6;
        }
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.5rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
            }
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            background: #fff;
            border-bottom: 1px solid var(--color-border-light);
            padding: 12px 0;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb-custom a {
            color: var(--color-text-soft);
            transition: color var(--transition-fast);
        }
        .breadcrumb-custom a:hover {
            color: var(--color-accent);
        }
        .breadcrumb-custom .separator {
            color: var(--color-border);
            font-size: 0.7rem;
        }
        .breadcrumb-custom .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* ========== HERO BANNER ========== */
        .category-hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            min-height: 380px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 31, 61, 0.88) 0%, rgba(10, 31, 61, 0.7) 50%, rgba(19, 45, 86, 0.78) 100%);
            z-index: 1;
        }
        .category-hero .hero-content {
            position: relative;
            z-index: 2;
            color: #fff;
            padding: 50px 0;
        }
        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
            backdrop-filter: blur(4px);
        }
        .category-hero .hero-badge i {
            font-size: 0.7rem;
            color: var(--color-accent-light);
        }
        .category-hero h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
            line-height: 1.2;
        }
        .category-hero .hero-desc {
            font-size: 1.1rem;
            opacity: 0.9;
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .category-hero .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }
        .category-hero .hero-stat {
            text-align: left;
        }
        .category-hero .hero-stat .stat-value {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-accent-light);
            line-height: 1;
            letter-spacing: 0.01em;
        }
        .category-hero .hero-stat .stat-label {
            font-size: 0.8rem;
            opacity: 0.75;
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .category-hero {
                min-height: 300px;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero .hero-desc {
                font-size: 0.95rem;
            }
            .category-hero .hero-stats {
                gap: 16px;
            }
            .category-hero .hero-stat .stat-value {
                font-size: 1.4rem;
            }
        }

        /* ========== STATS CARDS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
        }
        .stat-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            box-shadow: var(--shadow-md);
            text-align: center;
            transition: all var(--transition-base);
            border: 1px solid var(--color-border-light);
        }
        .stat-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        .stat-card .stat-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            font-size: 1.1rem;
        }
        .stat-card .stat-icon.blue {
            background: #e8f0fb;
            color: #2c5ea8;
        }
        .stat-card .stat-icon.green {
            background: #e6f4ec;
            color: #2d8a56;
        }
        .stat-card .stat-icon.amber {
            background: #fef5e7;
            color: #c49b3f;
        }
        .stat-card .stat-icon.purple {
            background: #f3edf9;
            color: #6b3fa0;
        }
        .stat-card .stat-number {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1.1;
            letter-spacing: 0.01em;
        }
        .stat-card .stat-desc {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        @media (max-width: 992px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                margin-top: -30px;
            }
        }
        @media (max-width: 520px) {
            .stats-row {
                grid-template-columns: 1fr;
                margin-top: -20px;
            }
        }

        /* ========== ARTICLE CARDS ========== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .article-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-xs);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .article-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #eef1f6;
        }
        .article-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-card:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .article-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(10, 31, 61, 0.82);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 14px;
            letter-spacing: 0.03em;
            backdrop-filter: blur(4px);
        }
        .article-card .card-body {
            padding: 18px 18px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .card-date {
            font-size: 0.78rem;
            color: var(--color-text-muted);
            margin-bottom: 6px;
        }
        .article-card .card-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-primary);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .card-excerpt {
            font-size: 0.85rem;
            color: var(--color-text-soft);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            margin-top: 12px;
            transition: gap var(--transition-fast);
        }
        .article-card .card-link:hover {
            gap: 8px;
            color: var(--color-accent-light);
        }
        @media (max-width: 992px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .article-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== RANKING TABLE ========== */
        .ranking-panel {
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
        }
        .ranking-header {
            background: var(--color-primary);
            color: #fff;
            padding: 18px 24px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.1rem;
            letter-spacing: 0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .ranking-header i {
            color: var(--color-accent-light);
        }
        .ranking-table {
            width: 100%;
            border-collapse: collapse;
        }
        .ranking-table th {
            text-align: left;
            padding: 12px 20px;
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--color-text-muted);
            letter-spacing: 0.04em;
            text-transform: uppercase;
            background: #fafbfc;
            border-bottom: 2px solid var(--color-border);
        }
        .ranking-table td {
            padding: 14px 20px;
            font-size: 0.93rem;
            border-bottom: 1px solid var(--color-border-light);
            color: var(--color-text);
        }
        .ranking-table tbody tr {
            transition: background var(--transition-fast);
        }
        .ranking-table tbody tr:hover {
            background: #fafbfd;
        }
        .rank-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.02em;
        }
        .rank-badge.top {
            background: linear-gradient(135deg, #f0c040, #e0a820);
            color: #fff;
            box-shadow: 0 2px 8px rgba(224, 168, 32, 0.35);
        }
        .rank-badge.high {
            background: #e8ecf2;
            color: var(--color-primary);
        }
        .trend-up {
            color: var(--color-success);
            font-weight: 600;
        }
        .trend-down {
            color: var(--color-danger);
            font-weight: 600;
        }
        @media (max-width: 600px) {
            .ranking-table th,
            .ranking-table td {
                padding: 10px 12px;
                font-size: 0.8rem;
            }
            .rank-badge {
                width: 26px;
                height: 26px;
                font-size: 0.72rem;
            }
        }

        /* ========== PHASE TIMELINE ========== */
        .phase-track {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 0;
            position: relative;
        }
        .phase-track::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 8%;
            right: 8%;
            height: 2px;
            background: var(--color-border);
            z-index: 0;
        }
        .phase-node {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 0 8px;
        }
        .phase-node .node-circle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: #fff;
            border: 2px solid var(--color-border);
            margin: 0 auto 12px;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-text-soft);
            transition: all var(--transition-base);
            box-shadow: var(--shadow-xs);
        }
        .phase-node.completed .node-circle {
            background: var(--color-primary);
            border-color: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(10, 31, 61, 0.25);
        }
        .phase-node.active .node-circle {
            background: #fff;
            border-color: var(--color-accent);
            color: var(--color-accent);
            box-shadow: 0 4px 16px rgba(196, 155, 63, 0.3);
            border-width: 3px;
        }
        .phase-node .node-title {
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--color-primary);
            margin-bottom: 4px;
        }
        .phase-node .node-desc {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            line-height: 1.4;
        }
        @media (max-width: 992px) {
            .phase-track {
                grid-template-columns: repeat(3, 1fr);
                gap: 20px 10px;
            }
            .phase-track::before {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .phase-track {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ========== FAQ ACCORDION ========== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 10px;
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-xs);
            transition: box-shadow var(--transition-fast);
        }
        .faq-accordion .accordion-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-accordion .accordion-button {
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--color-primary);
            background: #fff;
            padding: 16px 20px;
            border-radius: var(--radius-md) !important;
            box-shadow: none !important;
            transition: background var(--transition-fast);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: #fafbfd;
            color: var(--color-primary);
            border-bottom: 1px solid var(--color-border-light);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(10, 31, 61, 0.08) !important;
        }
        .faq-accordion .accordion-body {
            padding: 16px 20px 20px;
            font-size: 0.9rem;
            color: var(--color-text-soft);
            line-height: 1.7;
            background: #fff;
        }

        /* ========== CTA SECTION ========== */
        .cta-section-alt {
            background: linear-gradient(160deg, var(--color-primary) 0%, #0d2547 40%, #132d56 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section-alt::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            pointer-events: none;
        }
        .cta-section-alt h2 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.8rem;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }
        .cta-section-alt p {
            font-size: 0.95rem;
            opacity: 0.8;
            max-width: 500px;
            margin: 0 auto 22px;
            line-height: 1.6;
        }
        .btn-accent-lg {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 13px 32px;
            border-radius: 28px;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            border: none;
            box-shadow: 0 4px 16px rgba(196, 155, 63, 0.35);
        }
        .btn-accent-lg:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(196, 155, 63, 0.45);
            color: #fff;
        }
        .btn-outline-light-custom {
            display: inline-block;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 28px;
            border-radius: 28px;
            border: 2px solid rgba(255, 255, 255, 0.4);
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            margin-left: 10px;
        }
        .btn-outline-light-custom:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }
        @media (max-width: 520px) {
            .cta-section-alt {
                padding: 32px 20px;
            }
            .cta-section-alt h2 {
                font-size: 1.35rem;
            }
            .btn-outline-light-custom {
                margin-left: 0;
                margin-top: 10px;
            }
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-primary);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 30px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            color: #fff;
            letter-spacing: 0.02em;
        }
        .footer-col h4 {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 14px;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a,
        .footer-col ul li span {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.88rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .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, 0.4);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== UTILITIES ========== */
        .text-accent {
            color: var(--color-accent);
        }
        .bg-surface {
            background: var(--color-surface);
        }
        .mt-neg-40 {
            margin-top: -40px;
        }

/* roulang page: article */
:root {
            --clr-primary: #1a2f50;
            --clr-primary-light: #253d66;
            --clr-accent: #c49a3c;
            --clr-accent-light: #d4af5e;
            --clr-accent-pale: #faf3e3;
            --clr-bg: #f9f7f3;
            --clr-bg-white: #ffffff;
            --clr-bg-warm: #fdfaf5;
            --clr-text: #1c1c1c;
            --clr-text-soft: #4a4a4a;
            --clr-text-muted: #7a7a7a;
            --clr-text-light: #9e9e9e;
            --clr-border: #e6e1d8;
            --clr-border-light: #f0ece5;
            --clr-shadow-sm: 0 1px 3px rgba(26,47,80,0.06);
            --clr-shadow-md: 0 4px 16px rgba(26,47,80,0.08);
            --clr-shadow-lg: 0 12px 40px rgba(26,47,80,0.10);
            --clr-shadow-xl: 0 20px 60px rgba(26,47,80,0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --font-heading: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', -apple-system, sans-serif;
            --font-body: 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4,0,0.2,1);
            --transition-smooth: 0.35s cubic-bezier(0.4,0,0.2,1);
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--clr-text);
            background-color: var(--clr-bg);
            overflow-x: hidden;
        }

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

        .container-custom {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .container-custom { padding-left: 16px; padding-right: 16px; }
        }

        /* ===== HEADER / NAV ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--clr-border-light);
            box-shadow: var(--clr-shadow-sm);
            transition: box-shadow var(--transition-smooth);
        }
        .site-header.scrolled { box-shadow: var(--clr-shadow-md); }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            height: 64px;
        }
        @media (max-width: 768px) {
            .header-inner { padding: 0 16px; height: 56px; }
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--clr-primary);
            text-decoration: none;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }
        .brand-logo:hover { color: var(--clr-accent); }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-light) 100%);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0;
        }
        .nav-links li { list-style: none; }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--clr-text-soft);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }
        .nav-links a:hover { color: var(--clr-primary); background: rgba(26,47,80,0.04); }
        .nav-links a.active { color: var(--clr-primary); font-weight: 600; background: rgba(26,47,80,0.06); }
        .nav-links a.nav-cta {
            background: var(--clr-accent);
            color: #fff;
            font-weight: 600;
            padding: 9px 20px;
            border-radius: var(--radius-md);
            margin-left: 8px;
            transition: all var(--transition-smooth);
        }
        .nav-links a.nav-cta:hover {
            background: var(--clr-accent-light);
            color: #fff;
            box-shadow: var(--clr-shadow-md);
            transform: translateY(-1px);
        }

        .nav-toggle-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--clr-primary);
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }
        .nav-toggle-btn:hover { background: rgba(26,47,80,0.06); }

        @media (max-width: 1024px) {
            .nav-links a { padding: 6px 12px; font-size: 0.85rem; }
            .nav-links a.nav-cta { padding: 7px 16px; margin-left: 4px; }
        }
        @media (max-width: 768px) {
            .nav-toggle-btn { display: flex; align-items: center; justify-content: center; }
            .nav-links {
                display: none;
                position: absolute;
                top: 56px;
                left: 0;
                right: 0;
                flex-direction: column;
                background: #fff;
                border-bottom: 1px solid var(--clr-border);
                box-shadow: var(--clr-shadow-lg);
                padding: 12px 16px;
                gap: 2px;
                z-index: 1040;
            }
            .nav-links.show { display: flex; }
            .nav-links a {
                width: 100%;
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: var(--radius-sm);
            }
            .nav-links a.nav-cta {
                margin-left: 0;
                margin-top: 6px;
                text-align: center;
                justify-content: center;
            }
        }

        /* ===== READING PROGRESS BAR ===== */
        .reading-progress-bar {
            position: fixed;
            top: 0;
            left: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--clr-accent) 0%, #d4a84b 50%, var(--clr-accent-light) 100%);
            z-index: 1100;
            width: 0%;
            transition: width 0.1s linear;
            border-radius: 0 2px 0 0;
        }

        /* ===== BREADCRUMB ===== */
        .breadcrumb-section {
            padding: 20px 0 12px;
            background: transparent;
        }
        .breadcrumb-custom {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
            font-size: 0.88rem;
            color: var(--clr-text-muted);
        }
        .breadcrumb-custom a {
            color: var(--clr-text-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb-custom a:hover { color: var(--clr-accent); }
        .breadcrumb-custom .separator {
            color: var(--clr-text-light);
            font-size: 0.7rem;
            margin: 0 4px;
        }
        .breadcrumb-custom .current {
            color: var(--clr-primary);
            font-weight: 600;
        }

        /* ===== ARTICLE HEADER ===== */
        .article-header-section {
            padding: 16px 0 32px;
        }
        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--clr-accent-pale);
            color: var(--clr-accent);
            font-weight: 600;
            font-size: 0.82rem;
            padding: 6px 14px;
            border-radius: 50px;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
            text-decoration: none;
            transition: all var(--transition-fast);
        }
        .article-category-badge:hover {
            background: var(--clr-accent);
            color: #fff;
        }
        .article-category-badge .badge-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--clr-accent);
        }
        .article-category-badge:hover .badge-dot { background: #fff; }

        .article-title {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--clr-primary);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
            font-size: 0.9rem;
            color: var(--clr-text-muted);
            padding-bottom: 20px;
            border-bottom: 1px solid var(--clr-border-light);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i { color: var(--clr-accent); font-size: 0.85rem; }
        .article-meta .meta-stat {
            font-weight: 600;
            color: var(--clr-primary);
        }

        /* ===== FEATURED IMAGE ===== */
        .article-featured-image {
            margin-bottom: 32px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--clr-shadow-md);
            position: relative;
        }
        .article-featured-image img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }
        .article-featured-image .image-overlay-tag {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(26,47,80,0.88);
            backdrop-filter: blur(6px);
            color: #fff;
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        /* ===== ARTICLE CONTENT ===== */
        .article-content-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }
        @media (max-width: 1024px) {
            .article-content-wrapper {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.85;
            color: var(--clr-text);
        }
        .article-body h2 {
            font-family: var(--font-heading);
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--clr-primary);
            margin: 36px 0 16px;
            padding-left: 16px;
            border-left: 4px solid var(--clr-accent);
        }
        .article-body h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--clr-primary);
            margin: 28px 0 12px;
        }
        .article-body p {
            margin-bottom: 16px;
            text-align: justify;
        }
        .article-body ul, .article-body ol {
            margin: 16px 0;
            padding-left: 24px;
        }
        .article-body ul li {
            list-style: none;
            position: relative;
            padding-left: 20px;
            margin-bottom: 8px;
        }
        .article-body ul li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 10px;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--clr-accent);
        }
        .article-body ol li {
            list-style: decimal;
            margin-bottom: 8px;
        }
        .article-body blockquote {
            background: var(--clr-bg-warm);
            border-left: 4px solid var(--clr-accent);
            padding: 20px 24px;
            margin: 28px 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: var(--clr-text-soft);
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 20px 0;
            box-shadow: var(--clr-shadow-sm);
        }
        .article-body a {
            color: var(--clr-accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover { color: var(--clr-primary); }

        /* ===== SIDEBAR ===== */
        .article-sidebar {
            position: sticky;
            top: 88px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        @media (max-width: 1024px) {
            .article-sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 20px;
            }
            .article-sidebar > * { flex: 1 1 260px; }
        }
        @media (max-width: 600px) {
            .article-sidebar { flex-direction: column; }
            .article-sidebar > * { flex: 1 1 auto; }
        }

        .sidebar-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--clr-shadow-sm);
            border: 1px solid var(--clr-border-light);
            transition: box-shadow var(--transition-smooth);
        }
        .sidebar-card:hover { box-shadow: var(--clr-shadow-md); }
        .sidebar-card h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--clr-primary);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--clr-accent-pale);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h4 i { color: var(--clr-accent); font-size: 0.9rem; }

        .ranked-post-list { display: flex; flex-direction: column; gap: 12px; }
        .ranked-post-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 10px 12px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            text-decoration: none;
            color: inherit;
        }
        .ranked-post-item:hover {
            background: var(--clr-bg-warm);
            transform: translateX(3px);
        }
        .rank-num {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 0.85rem;
            background: #f0ece5;
            color: var(--clr-text-muted);
            transition: all var(--transition-fast);
        }
        .ranked-post-item:nth-child(1) .rank-num {
            background: var(--clr-accent);
            color: #fff;
        }
        .ranked-post-item:nth-child(2) .rank-num {
            background: #d4c5a0;
            color: #fff;
        }
        .ranked-post-item:nth-child(3) .rank-num {
            background: #c8b898;
            color: #fff;
        }
        .ranked-post-item:hover .rank-num {
            background: var(--clr-primary);
            color: #fff;
        }
        .rank-info { flex: 1; min-width: 0; }
        .rank-info .rank-title {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--clr-text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }
        .ranked-post-item:hover .rank-title { color: var(--clr-accent); }
        .rank-info .rank-date {
            font-size: 0.75rem;
            color: var(--clr-text-light);
            margin-top: 3px;
        }

        /* ===== ARTICLE TAGS ===== */
        .article-tags-section {
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--clr-border-light);
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            align-items: center;
        }
        .article-tags-section .tags-label {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--clr-text-muted);
            margin-right: 4px;
        }
        .tag-pill {
            display: inline-block;
            padding: 5px 14px;
            font-size: 0.8rem;
            border-radius: 50px;
            background: #f5f2eb;
            color: var(--clr-text-soft);
            text-decoration: none;
            transition: all var(--transition-fast);
            border: 1px solid transparent;
        }
        .tag-pill:hover {
            background: var(--clr-accent-pale);
            color: var(--clr-accent);
            border-color: var(--clr-accent);
        }

        /* ===== NOT FOUND ===== */
        .not-found-section {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-icon {
            font-size: 5rem;
            color: var(--clr-border);
            margin-bottom: 20px;
        }
        .not-found-section h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            color: var(--clr-primary);
            margin-bottom: 12px;
        }
        .not-found-section p {
            color: var(--clr-text-muted);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            background: var(--clr-primary);
            padding: 56px 0;
            margin-top: 48px;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(196,154,60,0.18) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(212,175,94,0.12) 0%, transparent 70%);
            border-radius: 50%;
        }
        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-inner p {
            color: rgba(255,255,255,0.7);
            margin-bottom: 24px;
            font-size: 1rem;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--clr-accent);
            color: #fff;
            font-weight: 600;
            padding: 14px 36px;
            border-radius: 50px;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition-smooth);
            border: none;
            box-shadow: var(--clr-shadow-lg);
        }
        .cta-btn:hover {
            background: var(--clr-accent-light);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: var(--clr-shadow-xl);
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #141e30;
            color: #fff;
            padding: 48px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        @media (max-width: 900px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 22px; }
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--clr-accent-light);
            margin-bottom: 12px;
        }
        .footer-col ul { display: flex; flex-direction: column; gap: 8px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.55);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover { color: #fff; }
        .footer-col ul li span {
            color: rgba(255,255,255,0.45);
            font-size: 0.9rem;
        }
        .footer-bottom {
            padding-top: 20px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
        }
        .footer-bottom p {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        /* ===== RESPONSIVE ADJUSTMENTS ===== */
        @media (max-width: 768px) {
            .article-title { font-size: 1.5rem; }
            .article-body { font-size: 0.98rem; }
            .article-body h2 { font-size: 1.25rem; margin: 24px 0 12px; }
            .article-meta { gap: 10px; font-size: 0.82rem; }
            .cta-inner h2 { font-size: 1.4rem; }
            .cta-inner p { font-size: 0.9rem; }
            .cta-btn { padding: 12px 28px; font-size: 0.9rem; }
            .breadcrumb-section { padding: 12px 0 8px; }
            .article-featured-image { border-radius: var(--radius-md); }
            .article-featured-image .image-overlay-tag {
                bottom: 12px;
                left: 12px;
                font-size: 0.7rem;
                padding: 4px 10px;
            }
        }
        @media (max-width: 520px) {
            .article-title { font-size: 1.35rem; }
            .article-body { font-size: 0.93rem; line-height: 1.75; }
            .article-body h2 { font-size: 1.15rem; }
            .sidebar-card { padding: 18px; }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1a2a4a;
            --color-primary-light: #243860;
            --color-accent: #c8a45c;
            --color-accent-light: #d9bc7a;
            --color-accent-dark: #a88a3e;
            --color-bg: #f7f5f0;
            --color-bg-alt: #edebe4;
            --color-surface: #ffffff;
            --color-text: #1c1c1c;
            --color-text-secondary: #6b7280;
            --color-text-muted: #9ca3af;
            --color-border: #e5e0d8;
            --color-border-light: #f0ece4;
            --color-success: #2d8a56;
            --color-warning: #d4892a;
            --color-info: #3b6fa0;
            --color-gold: #c8a45c;
            --color-silver: #a0a8b4;
            --color-bronze: #b8845c;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --shadow-sm: 0 1px 3px rgba(26,42,74,0.06), 0 1px 2px rgba(26,42,74,0.04);
            --shadow-md: 0 4px 16px rgba(26,42,74,0.08), 0 2px 6px rgba(26,42,74,0.04);
            --shadow-lg: 0 12px 32px rgba(26,42,74,0.10), 0 4px 12px rgba(26,42,74,0.05);
            --shadow-xl: 0 20px 48px rgba(26,42,74,0.14), 0 8px 20px rgba(26,42,74,0.06);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-heading: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
        }

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

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

        body {
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

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

        .container-custom {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-smooth), background var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            background: rgba(255,255,255,0.96);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            height: 66px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.22rem;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            text-decoration: none;
        }
        .brand-logo:hover {
            color: var(--color-primary);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--color-primary) 0%, #2c4a6e 100%);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            font-weight: 800;
            letter-spacing: 0.04em;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            border-radius: 6px;
            transition: all var(--transition-base);
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: var(--color-primary);
            background: rgba(26,42,74,0.04);
        }
        .nav-links li a.active {
            color: var(--color-accent-dark);
            background: rgba(200,164,92,0.10);
            font-weight: 600;
        }
        .nav-cta {
            background: var(--color-accent) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 9px 20px !important;
            border-radius: 20px !important;
            transition: all var(--transition-base) !important;
            margin-left: 4px;
        }
        .nav-cta:hover {
            background: var(--color-accent-dark) !important;
            color: #fff !important;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .nav-toggle-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-primary);
            padding: 8px 10px;
            border-radius: 6px;
            transition: background var(--transition-base);
        }
        .nav-toggle-btn:hover {
            background: rgba(26,42,74,0.06);
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background: linear-gradient(170deg, #1a2a4a 0%, #1e3258 30%, #243860 60%, #1c2e50 100%);
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 40%;
            background-blend-mode: overlay;
            padding: 72px 0 64px;
            color: #fff;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(26,42,74,0.72) 0%, rgba(26,42,74,0.55) 100%);
            z-index: 0;
        }
        .page-banner-content {
            position: relative;
            z-index: 1;
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb-custom a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .breadcrumb-custom a:hover {
            color: var(--color-accent-light);
        }
        .breadcrumb-custom .separator {
            color: rgba(255,255,255,0.4);
        }
        .breadcrumb-custom .current {
            color: var(--color-accent-light);
        }
        .page-banner h1 {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: 0.03em;
            margin: 0 0 14px;
            color: #fff;
        }
        .page-banner .banner-desc {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.78);
            max-width: 620px;
            line-height: 1.7;
            margin: 0;
        }
        .banner-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 20px;
        }
        .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: rgba(255,255,255,0.9);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 500;
            backdrop-filter: blur(4px);
        }

        /* ========== SECTION ========== */
        .section-padding {
            padding: 72px 0;
        }
        .section-padding-sm {
            padding: 48px 0;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-accent-dark);
            margin-bottom: 8px;
        }
        .section-heading {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section-subheading {
            font-size: 1.02rem;
            color: var(--color-text-secondary);
            max-width: 580px;
            line-height: 1.65;
        }
        .section-header {
            margin-bottom: 44px;
        }
        .section-header.text-center {
            text-align: center;
        }
        .section-header.text-center .section-subheading {
            margin-left: auto;
            margin-right: auto;
        }

        /* ========== STATS CARDS ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .stat-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
            border-radius: 3px 3px 0 0;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .stat-card:hover::before {
            opacity: 1;
        }
        .stat-icon {
            font-size: 2rem;
            color: var(--color-accent);
            margin-bottom: 10px;
        }
        .stat-number {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            line-height: 1.1;
        }
        .stat-unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-accent-dark);
        }
        .stat-label {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin-top: 4px;
        }

        /* ========== EDITORIAL FEATURE ========== */
        .editorial-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .editorial-image-wrap {
            position: relative;
            height: 100%;
            min-height: 380px;
            overflow: hidden;
        }
        .editorial-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }
        .editorial-block:hover .editorial-image-wrap img {
            transform: scale(1.04);
        }
        .editorial-tag {
            position: absolute;
            top: 20px;
            left: 20px;
            background: var(--color-accent);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.82rem;
            letter-spacing: 0.04em;
            z-index: 2;
            box-shadow: var(--shadow-md);
        }
        .editorial-content {
            padding: 40px 44px 40px 20px;
        }
        .editorial-content h3 {
            font-family: var(--font-heading);
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 14px;
        }
        .editorial-content p {
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .editorial-meta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 20px;
        }
        .editorial-meta-item {
            display: flex;
            align-items: center;
            gap: 7px;
            font-size: 0.88rem;
            color: var(--color-text-secondary);
        }
        .editorial-meta-item i {
            color: var(--color-accent);
        }

        /* ========== PROGRESS / TIMELINE CARDS ========== */
        .progress-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .progress-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
        }
        .progress-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .progress-card-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 16px;
            gap: 12px;
        }
        .progress-card-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-primary);
            margin: 0;
        }
        .stage-badge {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 5px 12px;
            border-radius: 16px;
            font-size: 0.78rem;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .stage-badge.phase-planning {
            background: #e8f0fb;
            color: #3b6fa0;
        }
        .stage-badge.phase-execution {
            background: #fef3e2;
            color: #d4892a;
        }
        .stage-badge.phase-review {
            background: #f2e8fc;
            color: #6b4d9a;
        }
        .stage-badge.phase-complete {
            background: #e4f5ec;
            color: #2d8a56;
        }
        .progress-bar-wrap {
            background: var(--color-bg-alt);
            border-radius: 20px;
            height: 8px;
            margin-bottom: 10px;
            overflow: hidden;
        }
        .progress-bar-fill {
            height: 100%;
            border-radius: 20px;
            background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
            transition: width 0.8s ease;
        }
        .progress-percent {
            font-weight: 700;
            font-size: 0.88rem;
            color: var(--color-primary);
            text-align: right;
        }
        .progress-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        /* ========== DOMAIN CARD GRID ========== */
        .domain-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }
        .domain-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .domain-card:hover {
            box-shadow: var(--shadow-xl);
            transform: translateY(-4px);
        }
        .domain-card-img {
            height: 180px;
            overflow: hidden;
        }
        .domain-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .domain-card:hover .domain-card-img img {
            transform: scale(1.06);
        }
        .domain-card-body {
            padding: 20px 22px;
        }
        .domain-card-body h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .domain-card-body p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .domain-card-link {
            font-weight: 600;
            font-size: 0.88rem;
            color: var(--color-accent-dark);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: gap var(--transition-base);
        }
        .domain-card-link:hover {
            gap: 9px;
            color: var(--color-accent-dark);
        }

        /* ========== RANKING TABLE ========== */
        .ranking-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-base);
        }
        .ranking-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }
        .ranking-item.top-rank {
            border-left: 4px solid var(--color-accent);
        }
        .ranking-item.top-rank.gold {
            border-left-color: #c8a45c;
            background: #fefcf6;
        }
        .ranking-item.top-rank.silver {
            border-left-color: #a0a8b4;
            background: #fafafa;
        }
        .ranking-item.top-rank.bronze {
            border-left-color: #b8845c;
            background: #fdfaf7;
        }
        .rank-number {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--color-text-muted);
            min-width: 40px;
            text-align: center;
            flex-shrink: 0;
        }
        .top-rank.gold .rank-number { color: #c8a45c; }
        .top-rank.silver .rank-number { color: #a0a8b4; }
        .top-rank.bronze .rank-number { color: #b8845c; }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-name {
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-primary);
            margin-bottom: 2px;
        }
        .rank-detail {
            font-size: 0.82rem;
            color: var(--color-text-secondary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-value {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }
        .rank-badge-icon {
            font-size: 1.3rem;
            flex-shrink: 0;
        }

        /* ========== CTA SECTION ========== */
        .cta-section-alt {
            background: linear-gradient(160deg, #1a2a4a 0%, #1e3258 40%, #243860 100%);
            border-radius: var(--radius-xl);
            padding: 56px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section-alt::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(200,164,92,0.10);
            z-index: 0;
        }
        .cta-section-alt::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(200,164,92,0.07);
            z-index: 0;
        }
        .cta-section-alt > * {
            position: relative;
            z-index: 1;
        }
        .cta-section-alt h3 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section-alt p {
            color: rgba(255,255,255,0.7);
            font-size: 1.02rem;
            max-width: 500px;
            margin: 0 auto 28px;
            line-height: 1.6;
        }
        .btn-cta-large {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 38px;
            border-radius: 28px;
            border: none;
            transition: all var(--transition-base);
            text-decoration: none;
            letter-spacing: 0.02em;
            box-shadow: 0 6px 20px rgba(200,164,92,0.35);
        }
        .btn-cta-large:hover {
            background: var(--color-accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(200,164,92,0.45);
        }
        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 12px 30px;
            border-radius: 28px;
            border: 2px solid rgba(255,255,255,0.5);
            transition: all var(--transition-base);
            text-decoration: none;
            margin-left: 12px;
        }
        .btn-outline-light-custom:hover {
            background: rgba(255,255,255,0.1);
            border-color: #fff;
            color: #fff;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #111827;
            color: #e5e7eb;
            padding: 52px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            color: #fff;
            letter-spacing: 0.02em;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a,
        .footer-col ul li span {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.55);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .footer-col ul li a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .editorial-block {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .editorial-image-wrap {
                min-height: 280px;
                max-height: 340px;
            }
            .editorial-content {
                padding: 28px 24px 32px;
            }
            .progress-card-grid {
                grid-template-columns: 1fr 1fr;
            }
            .domain-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .page-banner h1 {
                font-size: 2.1rem;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 58px;
                padding: 0 16px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 58px;
                left: 0;
                right: 0;
                flex-direction: column;
                background: #fff;
                border-bottom: 1px solid var(--color-border);
                padding: 12px 16px;
                gap: 2px;
                box-shadow: var(--shadow-lg);
                z-index: 1030;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                display: block;
                padding: 12px 14px;
                border-radius: 8px;
                font-size: 0.95rem;
            }
            .nav-cta {
                text-align: center;
                margin-left: 0;
                margin-top: 6px;
            }
            .nav-toggle-btn {
                display: inline-flex;
                align-items: center;
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .progress-card-grid {
                grid-template-columns: 1fr;
            }
            .domain-card-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .domain-card-img {
                height: 140px;
            }
            .editorial-content {
                padding: 24px 20px 28px;
            }
            .editorial-content h3 {
                font-size: 1.25rem;
            }
            .cta-section-alt {
                padding: 40px 24px;
                border-radius: var(--radius-lg);
            }
            .cta-section-alt h3 {
                font-size: 1.4rem;
            }
            .btn-outline-light-custom {
                margin-left: 0;
                margin-top: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .page-banner {
                padding: 48px 0 40px;
            }
            .page-banner h1 {
                font-size: 1.7rem;
            }
            .page-banner .banner-desc {
                font-size: 0.95rem;
            }
            .section-padding {
                padding: 48px 0;
            }
            .section-heading {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 20px 14px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .domain-card-grid {
                grid-template-columns: 1fr;
            }
            .editorial-image-wrap {
                min-height: 200px;
                max-height: 240px;
            }
            .ranking-item {
                padding: 12px 14px;
                gap: 10px;
            }
            .rank-number {
                font-size: 1.1rem;
                min-width: 30px;
            }
            .rank-value {
                font-size: 0.9rem;
            }
            .progress-card {
                padding: 20px 16px;
            }
            .page-banner h1 {
                font-size: 1.4rem;
            }
            .cta-section-alt {
                padding: 32px 18px;
            }
            .cta-section-alt h3 {
                font-size: 1.2rem;
            }
            .btn-cta-large {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1a1d2e;
            --primary-deep: #10121e;
            --accent: #c9a96e;
            --accent-light: #dcc08a;
            --accent-dark: #a88848;
            --surface: #ffffff;
            --bg: #f5f3ef;
            --bg-alt: #eaebe8;
            --text: #1e1f24;
            --text-secondary: #5a5c63;
            --text-muted: #8b8d94;
            --border: #dcd9d3;
            --border-light: #eae7e2;
            --shadow-sm: 0 2px 8px rgba(26,29,46,0.06);
            --shadow-md: 0 6px 24px rgba(26,29,46,0.10);
            --shadow-lg: 0 16px 48px rgba(26,29,46,0.14);
            --shadow-xl: 0 24px 64px rgba(26,29,46,0.18);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', system-ui, sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', system-ui, sans-serif;
            --font-mono: 'SF Mono', 'JetBrains Mono', 'Consolas', monospace;
            --header-height: 72px;
            --container-max: 1220px;
            --section-gap: 80px;
        }

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

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

        body {
            margin: 0;
            font-family: var(--font-body);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            overflow-x: hidden;
            padding-top: var(--header-height);
        }

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

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

        a:hover {
            color: var(--accent);
        }

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

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.25;
            color: var(--primary);
            margin-top: 0;
        }

        h1 {
            font-size: clamp(2.2rem, 4.5vw, 3.4rem);
            letter-spacing: -0.02em;
        }
        h2 {
            font-size: clamp(1.7rem, 3.2vw, 2.4rem);
            letter-spacing: -0.01em;
        }
        h3 {
            font-size: clamp(1.15rem, 2vw, 1.45rem);
        }

        .container-custom {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section-padding {
            padding-top: var(--section-gap);
            padding-bottom: var(--section-gap);
        }

        .section-padding-top {
            padding-top: var(--section-gap);
        }
        .section-padding-bottom {
            padding-bottom: var(--section-gap);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--accent);
            margin-bottom: 16px;
            font-family: var(--font-mono);
        }
        .section-label::before {
            content: '';
            display: block;
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .section-title {
            margin-bottom: 18px;
            font-weight: 800;
        }
        .section-desc {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 680px;
            line-height: 1.75;
        }

        /* ========== HEADER ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            height: var(--header-height);
            background: rgba(26, 29, 46, 0.96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255,255,255,0.08);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-lg);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.25rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.01em;
            font-family: var(--font-heading);
            white-space: nowrap;
            transition: opacity var(--transition);
        }
        .brand-logo:hover {
            color: #ffffff;
            opacity: 0.88;
        }
        .logo-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--accent);
            color: var(--primary-deep);
            font-weight: 900;
            font-size: 0.85rem;
            letter-spacing: 0;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            color: rgba(255,255,255,0.78);
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-links li a:hover {
            color: #ffffff;
            background: rgba(255,255,255,0.07);
        }
        .nav-links li a.active {
            color: #ffffff;
            background: rgba(201,169,110,0.18);
            font-weight: 700;
        }
        .nav-cta {
            background: var(--accent) !important;
            color: var(--primary-deep) !important;
            font-weight: 700 !important;
            border-radius: 8px !important;
            padding: 9px 20px !important;
            letter-spacing: 0.02em;
            transition: all var(--transition) !important;
        }
        .nav-cta:hover {
            background: var(--accent-light) !important;
            color: var(--primary-deep) !important;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(201,169,110,0.35);
        }
        .nav-toggle-btn {
            display: none;
            background: none;
            border: none;
            color: #ffffff;
            font-size: 1.5rem;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .nav-toggle-btn:hover {
            background: rgba(255,255,255,0.08);
        }

        @media (max-width: 992px) {
            .nav-toggle-btn {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-links {
                position: fixed;
                top: var(--header-height);
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(26,29,46,0.98);
                backdrop-filter: blur(18px);
                -webkit-backdrop-filter: blur(18px);
                border-bottom: 1px solid rgba(255,255,255,0.08);
                padding: 16px 24px;
                gap: 4px;
                display: none;
                z-index: 1040;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links li a {
                width: 100%;
                padding: 12px 16px;
                font-size: 0.95rem;
                border-radius: 10px;
            }
            .nav-cta {
                text-align: center;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .brand-logo {
                font-size: 1rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 0.7rem;
                border-radius: 8px;
            }
            .header-inner {
                padding: 0 14px;
            }
        }

        /* ========== HERO ========== */
        .hero-category {
            position: relative;
            min-height: 520px;
            display: flex;
            align-items: center;
            background: var(--primary-deep);
            overflow: hidden;
            isolation: isolate;
        }
        .hero-category .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center 30%;
            opacity: 0.28;
        }
        .hero-category .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: 1;
            background: linear-gradient(180deg, rgba(16,18,30,0.65) 0%, rgba(26,29,46,0.92) 100%);
        }
        .hero-category .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 60px 0;
        }
        .hero-category .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(201,169,110,0.15);
            border: 1px solid rgba(201,169,110,0.35);
            color: var(--accent-light);
            padding: 8px 18px;
            border-radius: 30px;
            font-size: 0.82rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            margin-bottom: 20px;
            font-family: var(--font-mono);
        }
        .hero-category h1 {
            color: #ffffff;
            margin-bottom: 18px;
            font-weight: 800;
        }
        .hero-category .hero-lead {
            color: rgba(255,255,255,0.72);
            font-size: 1.12rem;
            max-width: 600px;
            line-height: 1.75;
            margin-bottom: 28px;
        }
        .hero-category .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
        }
        .hero-stat-item {
            display: flex;
            align-items: baseline;
            gap: 6px;
        }
        .hero-stat-num {
            font-size: 2.2rem;
            font-weight: 900;
            color: var(--accent-light);
            font-family: var(--font-mono);
            letter-spacing: -0.02em;
            line-height: 1;
        }
        .hero-stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.6);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .hero-category {
                min-height: 400px;
            }
            .hero-category .hero-content {
                padding: 40px 0;
            }
            .hero-stat-num {
                font-size: 1.6rem;
            }
        }

        /* ========== CARDS ========== */
        .card-custom {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--border);
        }
        .card-custom .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #e8e5df;
        }
        .card-custom .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card-custom:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .card-custom .card-body-custom {
            padding: 22px 20px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-custom .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent-dark);
            background: rgba(201,169,110,0.12);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 10px;
            letter-spacing: 0.04em;
            width: fit-content;
        }
        .card-custom .card-title-link {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }
        .card-custom .card-title-link:hover {
            color: var(--accent-dark);
        }
        .card-custom .card-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .card-custom .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ========== RANKING TABLE ========== */
        .ranking-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 16px 20px;
            transition: all var(--transition);
        }
        .ranking-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
            transform: translateX(4px);
        }
        .ranking-num {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 900;
            font-size: 1.1rem;
            font-family: var(--font-mono);
        }
        .ranking-num.top-1 {
            background: #c9a96e;
            color: #fff;
        }
        .ranking-num.top-2 {
            background: #b0b8c4;
            color: #fff;
        }
        .ranking-num.top-3 {
            background: #cd9b6b;
            color: #fff;
        }
        .ranking-num.normal {
            background: #eef0f4;
            color: var(--text-secondary);
        }
        .ranking-info {
            flex: 1;
            min-width: 0;
        }
        .ranking-info .ranking-title {
            font-weight: 700;
            color: var(--primary);
            font-size: 0.98rem;
            margin-bottom: 2px;
        }
        .ranking-info .ranking-sub {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .ranking-badge {
            flex-shrink: 0;
            font-size: 0.78rem;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 20px;
            letter-spacing: 0.03em;
        }
        .badge-impact-high {
            background: #fde8e8;
            color: #b91c1c;
        }
        .badge-impact-mid {
            background: #fef3c7;
            color: #92400e;
        }
        .badge-impact-low {
            background: #d1fae5;
            color: #065f46;
        }

        /* ========== TIMELINE ========== */
        .timeline {
            position: relative;
            padding-left: 32px;
            list-style: none;
            margin: 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 11px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: var(--border);
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding-bottom: 28px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: -32px;
            top: 4px;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--surface);
            border: 3px solid var(--accent);
            z-index: 2;
            transition: all var(--transition);
        }
        .timeline-item:hover .timeline-dot {
            background: var(--accent);
            box-shadow: 0 0 0 8px rgba(201,169,110,0.2);
        }
        .timeline-date {
            font-size: 0.78rem;
            font-weight: 700;
            color: var(--accent-dark);
            letter-spacing: 0.05em;
            font-family: var(--font-mono);
            margin-bottom: 4px;
        }
        .timeline-title {
            font-weight: 700;
            color: var(--primary);
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .timeline-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-accordion .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius) !important;
            margin-bottom: 10px;
            background: var(--surface);
            overflow: hidden;
        }
        .faq-accordion .accordion-button {
            font-weight: 700;
            font-size: 1rem;
            color: var(--primary);
            background: var(--surface);
            padding: 18px 22px;
            border-radius: var(--radius) !important;
            box-shadow: none !important;
            transition: all var(--transition);
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(201,169,110,0.06);
            color: var(--primary);
            border-bottom: 1px solid var(--border-light);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(201,169,110,0.2) !important;
            border-color: var(--accent);
        }
        .faq-accordion .accordion-button:hover {
            background: rgba(201,169,110,0.04);
        }
        .faq-accordion .accordion-button::after {
            background-size: 16px;
            transition: transform var(--transition);
        }
        .faq-accordion .accordion-body {
            padding: 18px 22px 20px;
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.75;
        }

        /* ========== CTA ========== */
        .cta-block {
            background: var(--primary);
            border-radius: var(--radius-xl);
            padding: 50px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            z-index: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(201,169,110,0.18) 0%, transparent 60%);
        }
        .cta-block .cta-content {
            position: relative;
            z-index: 1;
        }
        .cta-block h2 {
            color: #ffffff;
            margin-bottom: 12px;
        }
        .cta-block p {
            color: rgba(255,255,255,0.65);
            font-size: 1.02rem;
            max-width: 520px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: var(--primary-deep);
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 10px;
            border: none;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            font-family: var(--font-heading);
        }
        .btn-accent:hover {
            background: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(201,169,110,0.4);
            color: var(--primary-deep);
        }
        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #ffffff;
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 10px;
            border: 2px solid rgba(255,255,255,0.35);
            letter-spacing: 0.02em;
            transition: all var(--transition);
            font-family: var(--font-heading);
        }
        .btn-outline-light-custom:hover {
            border-color: #ffffff;
            background: rgba(255,255,255,0.08);
            color: #ffffff;
            transform: translateY(-2px);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            padding: 14px 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border-light);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .breadcrumb-bar a {
            color: var(--text-secondary);
            font-weight: 500;
        }
        .breadcrumb-bar a:hover {
            color: var(--accent-dark);
        }
        .breadcrumb-bar .separator {
            margin: 0 8px;
            color: var(--border);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--primary-deep);
            color: #ffffff;
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            color: #ffffff;
            font-size: 0.9rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a,
        .footer-col ul li span {
            color: rgba(255,255,255,0.55);
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.02em;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }

        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 576px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .site-footer {
                padding: 36px 0 20px;
            }
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            :root {
                --section-gap: 56px;
            }
            .container-custom {
                padding-left: 20px;
                padding-right: 20px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-gap: 44px;
            }
            .container-custom {
                padding-left: 16px;
                padding-right: 16px;
            }
            .cta-block {
                padding: 32px 22px;
                border-radius: var(--radius-lg);
            }
            .ranking-item {
                flex-wrap: wrap;
                gap: 10px;
                padding: 14px 16px;
            }
            .ranking-num {
                width: 36px;
                height: 36px;
                font-size: 0.9rem;
            }
        }
        @media (max-width: 520px) {
            :root {
                --section-gap: 36px;
            }
            .container-custom {
                padding-left: 12px;
                padding-right: 12px;
            }
            .card-custom .card-body-custom {
                padding: 16px 14px 18px;
            }
            .card-custom .card-title-link {
                font-size: 0.95rem;
            }
            .cta-block h2 {
                font-size: 1.3rem;
            }
            .btn-accent,
            .btn-outline-light-custom {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .timeline {
                padding-left: 24px;
            }
            .timeline-dot {
                left: -24px;
                width: 20px;
                height: 20px;
            }
            .timeline::before {
                left: 7px;
            }
        }

        /* ========== UTILITY ========== */
        .text-accent {
            color: var(--accent);
        }
        .bg-surface {
            background: var(--surface);
        }
        .bg-alt {
            background: var(--bg-alt);
        }
        .fw-800 {
            font-weight: 800;
        }
        .gap-row-24 {
            row-gap: 24px;
        }