/* roulang page: index */
:root {
            --primary: #6C5CE7;
            --primary-dark: #5A4BD1;
            --primary-light: #9B8CF7;
            --accent: #F0B90B;
            --accent-dark: #D4A106;
            --dark-bg: #12101F;
            --dark-bg-2: #1D1A32;
            --light-bg: #F6F7FB;
            --white: #FFFFFF;
            --text-main: #1A1A2E;
            --text-body: #4A4A68;
            --text-muted: #8A8AA3;
            --border: #E5E7F0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 30px rgba(0, 0, 0, .08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, .12);
            --transition: all .3s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--white);
            overflow-x: hidden;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1280px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(18, 16, 31, .92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            transition: var(--transition);
        }
        .site-header.scrolled {
            background: rgba(18, 16, 31, .98);
            box-shadow: 0 4px 20px rgba(0, 0, 0, .3);
        }
        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--white);
            letter-spacing: -.5px;
        }
        .brand-logo i {
            color: var(--accent);
            font-size: 1.7rem;
            margin-right: 8px;
        }
        .brand-logo span {
            background: linear-gradient(135deg, var(--accent), #FFD700);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            color: rgba(255, 255, 255, .78);
            font-size: .925rem;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 30px;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--white);
            background: rgba(255, 255, 255, .08);
        }
        .nav-link.active {
            color: var(--white);
            background: var(--primary);
            box-shadow: 0 4px 15px rgba(108, 92, 231, .4);
        }
        .nav-cta {
            font-size: .875rem;
            padding: 9px 22px;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--accent), #FFD700);
            color: #1A1A2E;
            font-weight: 600;
            border: none;
            box-shadow: 0 4px 14px rgba(240, 185, 11, .3);
            transition: var(--transition);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(240, 185, 11, .45);
            color: #1A1A2E;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--white);
            font-size: 1.5rem;
            padding: 8px;
        }
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(18, 16, 31, .92), rgba(108, 92, 231, .75)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 140px 0 90px;
            color: var(--white);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            padding: 6px 16px;
            border-radius: 30px;
            font-size: .85rem;
            color: #fff;
            margin-bottom: 22px;
            backdrop-filter: blur(6px);
        }
        .hero-badge i {
            color: var(--accent);
        }
        .hero-section h1 {
            font-size: 3.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -1px;
        }
        .hero-section h1 .highlight {
            background: linear-gradient(135deg, var(--accent), #FFD700);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, .85);
            max-width: 620px;
            margin-bottom: 34px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-primary-custom {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border: none;
            padding: 12px 30px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 1rem;
            box-shadow: 0 6px 20px rgba(108, 92, 231, .4);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-custom:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(108, 92, 231, .55);
            color: #fff;
        }
        .btn-outline-light-custom {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, .55);
            color: #fff;
            padding: 11px 28px;
            border-radius: 30px;
            font-weight: 500;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, .1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            gap: 36px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, .15);
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin: 0;
        }
        .hero-stat-item p {
            color: rgba(255, 255, 255, .7);
            font-size: .85rem;
            margin: 0;
            letter-spacing: 2px;
        }
        .section-wrapper {
            padding: 90px 0;
        }
        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 50px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(108, 92, 231, .1);
            color: var(--primary);
            padding: 5px 16px;
            border-radius: 20px;
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }
        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -.5px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 1.05rem;
            margin-top: 10px;
        }
        .feature-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            transform: scaleX(0);
            transition: var(--transition);
            transform-origin: left;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .feature-card:hover::before {
            transform: scaleX(1);
        }
        .feature-icon {
            width: 72px;
            height: 72px;
            background: linear-gradient(135deg, rgba(108, 92, 231, .12), rgba(240, 185, 11, .1));
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.7rem;
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .feature-card p {
            font-size: .92rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }
        .category-tabs {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .category-tab {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 30px;
            background: var(--white);
            border: 2px solid var(--border);
            color: var(--text-body);
            font-weight: 600;
            font-size: .92rem;
            transition: var(--transition);
        }
        .category-tab i {
            color: var(--primary);
        }
        .category-tab:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 4px 14px rgba(108, 92, 231, .15);
        }
        .category-tab.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-color: transparent;
            color: #fff;
            box-shadow: 0 6px 20px rgba(108, 92, 231, .35);
        }
        .category-tab.active i {
            color: #fff;
        }
        .category-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
            position: relative;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .category-card .card-img-wrap {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .category-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .category-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .category-card .card-img-wrap::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60%;
            background: linear-gradient(transparent, rgba(0, 0, 0, .4));
        }
        .category-card .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .category-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .category-card p {
            font-size: .88rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            margin: 0;
        }
        .category-card .card-link {
            margin-top: 16px;
            color: var(--primary);
            font-weight: 600;
            font-size: .88rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .category-card .card-link i {
            transition: transform .3s;
        }
        .category-card:hover .card-link i {
            transform: translateX(4px);
        }
        .news-section {
            background: var(--light-bg);
        }
        .news-card {
            display: flex;
            flex-direction: column;
            background: var(--white);
            padding: 24px;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
            position: relative;
        }
        .news-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .news-card .news-meta {
            display: flex;
            gap: 12px;
            font-size: .78rem;
            color: var(--text-muted);
            margin-bottom: 10px;
            align-items: center;
        }
        .news-card .news-meta .badge-cat {
            background: rgba(108, 92, 231, .12);
            color: var(--primary);
            padding: 3px 12px;
            border-radius: 14px;
            font-weight: 600;
        }
        .news-card h3 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card p {
            font-size: .85rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-date {
            margin-top: auto;
            padding-top: 14px;
            font-size: .78rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .stats-section {
            background: linear-gradient(135deg, rgba(18, 16, 31, .95), rgba(108, 92, 231, .85)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            padding: 80px 0;
            color: #fff;
        }
        .stat-item {
            text-align: center;
            padding: 30px 20px;
        }
        .stat-item .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            margin-bottom: 6px;
            background: linear-gradient(135deg, var(--accent), #FFD700);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .stat-item .stat-label {
            font-size: .9rem;
            color: rgba(255, 255, 255, .75);
            letter-spacing: 1px;
        }
        .game-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            height: 260px;
            display: block;
            transition: var(--transition);
        }
        .game-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .game-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(18, 16, 31, .75), transparent 50%);
        }
        .game-card:hover img {
            transform: scale(1.06);
        }
        .game-card .game-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 24px;
            z-index: 2;
            color: #fff;
        }
        .game-card .game-overlay h4 {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 4px;
        }
        .game-card .game-overlay p {
            font-size: .82rem;
            color: rgba(255, 255, 255, .75);
            margin: 0;
        }
        .process-section {
            background: var(--light-bg);
        }
        .process-step {
            display: flex;
            gap: 20px;
            position: relative;
            padding: 24px;
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
        }
        .process-step:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }
        .process-step .step-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            opacity: .3;
            line-height: 1;
            min-width: 50px;
        }
        .process-step .step-content h4 {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .process-step .step-content p {
            font-size: .88rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px 28px;
            margin-bottom: 14px;
            transition: var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-item h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-item h4::before {
            content: '\f059';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--primary);
            font-size: 1.1rem;
        }
        .faq-item p {
            font-size: .9rem;
            color: var(--text-muted);
            margin: 0;
            padding-left: 30px;
            line-height: 1.7;
        }
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--dark-bg));
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: rgba(240, 185, 11, .08);
            border-radius: 50%;
        }
        .cta-content {
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .cta-content p {
            color: rgba(255, 255, 255, .8);
            font-size: 1.05rem;
            margin-bottom: 28px;
        }
        .site-footer {
            background: #0D0B18;
            color: rgba(255, 255, 255, .7);
            padding: 70px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand i {
            color: var(--accent);
            margin-right: 8px;
        }
        .footer-desc {
            font-size: .9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, .55);
            max-width: 320px;
        }
        .footer-title {
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            margin-bottom: 18px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, .55);
            font-size: .9rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-links a i {
            font-size: .7rem;
        }
        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: .8rem;
            color: rgba(255, 255, 255, .4);
        }
        @media (max-width: 991px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 76px;
                left: 0;
                right: 0;
                background: var(--dark-bg);
                flex-direction: column;
                padding: 20px;
                gap: 10px;
                border-bottom: 1px solid rgba(255, 255, 255, .1);
                box-shadow: 0 16px 40px rgba(0, 0, 0, .3);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta {
                display: none;
            }
            .hero-section {
                padding: 120px 0 70px;
            }
            .hero-section h1 {
                font-size: 2.4rem;
            }
            .hero-stats {
                gap: 20px;
                flex-wrap: wrap;
            }
            .section-wrapper {
                padding: 70px 0;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-actions .btn {
                padding: 10px 20px;
                font-size: .9rem;
            }
            .category-tabs {
                gap: 8px;
            }
            .category-tab {
                padding: 8px 16px;
                font-size: .82rem;
            }
            .stat-item .stat-number {
                font-size: 2rem;
            }
            .game-card {
                height: 200px;
            }
        }
        @media (max-width: 520px) {
            .hero-section {
                min-height: auto;
                padding: 100px 0 50px;
            }
            .hero-section h1 {
                font-size: 1.7rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .hero-stats {
                flex-wrap: wrap;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
            --primary: #7c3aed;
            --primary-soft: #ede9fe;
            --accent: #f59e0b;
            --accent-soft: #fef3c7;
            --dark: #0f172a;
            --text: #334155;
            --muted: #64748b;
            --background: #f8fafc;
            --white: #ffffff;
            --border: #e2e8f0;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);
            --shadow: 0 10px 30px rgba(0, 0, 0, .08);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, .12);
            --radius: 1.25rem;
            --radius-sm: .75rem;
            --transition: .2s ease;
        }

        * {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 1rem;
            line-height: 1.6;
            color: var(--text);
            background: var(--background);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: var(--primary);
            transition: var(--transition);
        }

        .container {
            max-width: 1200px;
        }

        .btn {
            border-radius: 999px;
            padding: .55rem 1.25rem;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--dark);
            border-color: var(--dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .btn-outline-primary {
            border-color: var(--primary);
            color: var(--primary);
        }

        .btn-outline-primary:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .btn-outline-light {
            border-color: rgba(255, 255, 255, .6);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }

        .badge {
            border-radius: 999px;
        }

        .section-padding {
            padding: 4.5rem 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: .5rem;
        }

        .section-sub {
            color: var(--muted);
            margin-bottom: 2rem;
        }

        /* ========== Header ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .88);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

        .main-nav {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: .75rem 0;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--dark);
            text-decoration: none;
            white-space: nowrap;
        }

        .brand-logo i {
            color: var(--primary);
            font-size: 1.5rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: .25rem;
        }

        .nav-link {
            display: inline-block;
            padding: .5rem .9rem;
            border-radius: 999px;
            font-weight: 500;
            color: var(--text);
            text-decoration: none;
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(124, 58, 237, .28);
        }

        .nav-cta {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: .55rem 1.25rem;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
        }

        .nav-cta:hover {
            background: var(--dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: .5rem;
            padding: .5rem .75rem;
            font-size: 1.2rem;
            color: var(--text);
        }

        /* ========== Article Banner ========== */
        .article-banner {
            background: linear-gradient(120deg, rgba(15, 23, 42, .92), rgba(124, 58, 237, .78)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            padding: 6rem 0 8rem;
        }

        .breadcrumb {
            display: flex;
            gap: .5rem;
            flex-wrap: wrap;
            align-items: center;
            font-size: .9rem;
            color: rgba(255, 255, 255, .8);
            background: transparent;
            padding: 0;
            margin-bottom: 0;
        }

        .breadcrumb a {
            color: #fff;
            text-decoration: none;
        }

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

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

        .banner-title {
            max-width: 800px;
            margin-top: 1rem;
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
        }

        .banner-meta {
            display: flex;
            gap: 1.5rem;
            margin-top: 1.5rem;
            flex-wrap: wrap;
        }

        .banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            font-size: .9rem;
        }

        /* ========== Article Content ========== */
        .article-section {
            margin-top: -4rem;
            padding-bottom: 4rem;
        }

        .article-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            padding: 2.5rem;
            margin-bottom: 2rem;
        }

        .article-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 1rem;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            align-items: center;
            margin-bottom: 2rem;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            color: var(--muted);
            font-size: .9rem;
        }

        .badge-cat {
            background: var(--accent-soft);
            color: var(--accent);
            font-weight: 600;
            padding: .35rem .8rem;
            border-radius: 999px;
            font-size: .8rem;
            display: inline-block;
        }

        .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--dark);
            margin: 2rem 0 1rem;
        }

        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--dark);
            margin: 1.5rem 0 .75rem;
        }

        .article-body p {
            margin-bottom: 1.25rem;
        }

        .article-body img {
            border-radius: var(--radius);
            max-width: 100%;
            margin: 1.5rem 0;
            box-shadow: var(--shadow);
        }

        .article-body ul,
        .article-body ol {
            margin-bottom: 1.25rem;
            padding-left: 1.25rem;
        }

        .article-body li {
            margin-bottom: .5rem;
        }

        .not-found {
            text-align: center;
            padding: 4rem 2rem;
        }

        .not-found h1 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--dark);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: .75rem;
            padding-top: 2rem;
            margin-top: 2rem;
            border-top: 1px solid var(--border);
        }

        .article-share span {
            font-weight: 600;
            color: var(--dark);
        }

        .share-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--background);
            color: var(--text);
            border: 1px solid var(--border);
            transition: var(--transition);
            text-decoration: none;
        }

        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-3px);
        }

        /* ========== Sidebar ========== */
        .sidebar-card {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
        }

        .sidebar-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 1rem;
        }

        .sidebar-cats {
            display: flex;
            flex-direction: column;
            gap: .5rem;
        }

        .sidebar-cats a {
            display: flex;
            align-items: center;
            gap: .75rem;
            padding: .75rem;
            border-radius: var(--radius-sm);
            background: var(--background);
            color: var(--text);
            text-decoration: none;
            transition: var(--transition);
        }

        .sidebar-cats a:hover {
            background: var(--primary-soft);
            color: var(--primary);
            transform: translateX(4px);
        }

        .sidebar-cats i {
            color: var(--primary);
        }

        /* ========== Topic Cards ========== */
        .topic-card {
            overflow: hidden;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            background: #fff;
            text-decoration: none;
            color: var(--text);
            transition: var(--transition);
            display: block;
            height: 100%;
        }

        .topic-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: var(--transition);
        }

        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            color: var(--text);
        }

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

        .topic-body {
            padding: 1.5rem;
        }

        .topic-body h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: .5rem;
        }

        .topic-body p {
            color: var(--muted);
            font-size: .9rem;
            margin-bottom: 0;
        }

        /* ========== FAQ ========== */
        .faq-section {
            background: var(--background);
        }

        .faq-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 1rem;
            overflow: hidden;
        }

        .faq-accordion .accordion-button {
            font-weight: 600;
            color: var(--dark);
            background: #fff;
            padding: 1.25rem;
            font-size: 1rem;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-soft);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 .25rem rgba(124, 58, 237, .12);
        }

        .faq-accordion .accordion-body {
            color: var(--text);
            line-height: 1.8;
            background: #fff;
        }

        /* ========== CTA ========== */
        .cta-band {
            background: linear-gradient(120deg, rgba(124, 58, 237, .95), rgba(79, 70, 229, .92)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            border-radius: var(--radius);
            padding: 3rem;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-band h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: .75rem;
        }

        .cta-band p {
            font-size: 1rem;
            opacity: .9;
            margin-bottom: 0;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--dark);
            color: #cbd5e1;
            padding: 4rem 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: .5rem;
            margin-bottom: 1rem;
        }

        .footer-desc {
            font-size: .9rem;
            line-height: 1.7;
            max-width: 360px;
            color: #94a3b8;
        }

        .footer-title {
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
        }

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

        .footer-links li {
            margin-bottom: .5rem;
        }

        .footer-links a {
            color: #cbd5e1;
            text-decoration: none;
            font-size: .9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: .35rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 1.5rem 0;
            display: flex;
            justify-content: space-between;
            gap: 1rem;
            flex-wrap: wrap;
            font-size: .85rem;
            color: #94a3b8;
        }

        /* ========== Responsive ========== */
        @media (max-width: 991.98px) {
            .main-nav {
                flex-wrap: wrap;
            }

            .nav-links {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 1rem;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow);
                display: none;
                gap: .35rem;
            }

            .nav-links.show {
                display: flex;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-cta {
                display: none;
            }

            .banner-title {
                font-size: 2rem;
            }

            .article-card {
                padding: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 767.98px) {
            .section-padding {
                padding: 3.5rem 0;
            }

            .article-banner {
                padding: 4rem 0 6rem;
            }

            .banner-title {
                font-size: 1.6rem;
            }

            .article-title {
                font-size: 1.5rem;
            }

            .cta-band {
                padding: 2rem;
                text-align: center;
            }

            .cta-band h2 {
                font-size: 1.4rem;
            }

            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .brand-logo span {
                font-size: .95rem;
            }

            .banner-meta {
                gap: .8rem;
            }

            .topic-card img {
                height: 160px;
            }

            .article-card {
                padding: 1.25rem;
            }

            .article-share {
                flex-wrap: wrap;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0b1220;
            --primary-2: #151e2f;
            --dark-bg: #0d1526;
            --darker: #080e1a;
            --accent: #f0b90b;
            --accent-2: #f4c430;
            --accent-dark: #c99600;
            --cyan: #16b8a6;
            --bg-light: #f5f7fb;
            --bg-white: #ffffff;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(0, 0, 0, .05);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, .08);
            --shadow-lg: 0 18px 44px rgba(0, 0, 0, .14);
            --transition: all .25s ease;
            --header-h: 78px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Inter", "PingFang SC", "HarmonicOS Sans SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-light);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
        }

        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(240, 185, 11, .5);
            outline-offset: 2px;
            border-radius: 4px;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: 88px 0;
        }

        .section-head {
            max-width: 780px;
            margin: 0 auto 56px;
            text-align: center;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(240, 185, 11, .12);
            color: var(--accent-dark);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .05em;
            padding: 6px 18px;
            border-radius: 999px;
            margin-bottom: 16px;
            text-transform: none;
            border: 1px solid rgba(240, 185, 11, .18);
        }

        .section-head h2 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -.02em;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
        }

        .section-head.light h2 {
            color: #fff;
        }

        .section-head.light p {
            color: rgba(255, 255, 255, .7);
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(8, 14, 26, .94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
            height: var(--header-h);
        }

        .site-header .container {
            height: 100%;
        }

        .main-nav {
            display: flex;
            align-items: center;
            height: 100%;
            justify-content: space-between;
            gap: 20px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: .01em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-logo i {
            color: var(--accent);
            font-size: 24px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            margin-left: auto;
            margin-right: auto;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 18px;
            color: rgba(255, 255, 255, .72);
            font-size: 14.5px;
            font-weight: 500;
            border-radius: 999px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .07);
        }

        .nav-link.active {
            color: var(--accent);
            background: rgba(240, 185, 11, .12);
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent);
            color: #0b1220;
            font-weight: 700;
            font-size: 14px;
            padding: 10px 22px;
            border-radius: 999px;
            border: none;
            transition: var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--accent-2);
            color: #0b1220;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(240, 185, 11, .35);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #fff;
            font-size: 22px;
            cursor: pointer;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, .08);
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            min-height: 440px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--darker);
            padding: 100px 0 90px;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: .42;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(8, 14, 26, .95) 20%, rgba(8, 14, 26, .68) 60%, rgba(8, 14, 26, .45) 100%);
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 26px;
            font-size: 13.5px;
            color: rgba(255, 255, 255, .55);
        }

        .breadcrumb-nav a {
            color: rgba(255, 255, 255, .6);
            transition: var(--transition);
        }

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

        .breadcrumb-nav i {
            font-size: 10px;
            color: rgba(255, 255, 255, .35);
        }

        .category-hero h1 {
            font-size: clamp(28px, 5vw, 48px);
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -.02em;
            margin-bottom: 20px;
            max-width: 760px;
        }

        .category-hero h1 span {
            color: var(--accent);
        }

        .hero-lead {
            font-size: 16.5px;
            color: rgba(255, 255, 255, .78);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 34px;
        }

        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(4, auto);
            gap: 16px;
            max-width: 880px;
            margin-top: 12px;
        }

        .hero-metric {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .09);
            border-radius: var(--radius-md);
            padding: 14px 24px;
            backdrop-filter: blur(10px);
            min-width: 150px;
        }

        .hero-metric .metric-label {
            font-size: 12px;
            color: rgba(255, 255, 255, .5);
            text-transform: uppercase;
            letter-spacing: .06em;
            margin-bottom: 4px;
        }

        .hero-metric .metric-value {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        .hero-metric .metric-value i {
            color: var(--accent);
            margin-right: 4px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 34px;
        }

        .btn-gold {
            background: var(--accent);
            color: #0b1220;
            font-weight: 700;
            padding: 13px 30px;
            border-radius: 999px;
            border: none;
            font-size: 15px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-gold:hover {
            background: var(--accent-2);
            color: #0b1220;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(240, 185, 11, .35);
        }

        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, .35);
            color: #fff;
            font-weight: 600;
            padding: 13px 30px;
            border-radius: 999px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-light:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            background: rgba(240, 185, 11, .07);
        }

        /* ===== Platform Cards ===== */
        .platform-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .platform-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(240, 185, 11, .3);
        }

        .platform-img-wrap {
            position: relative;
            height: 200px;
            overflow: hidden;
            background: var(--primary-2);
        }

        .platform-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .platform-card:hover .platform-img-wrap img {
            transform: scale(1.05);
        }

        .platform-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(11, 18, 32, .82);
            backdrop-filter: blur(8px);
            color: var(--accent);
            font-size: 12.5px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 1px solid rgba(255, 255, 255, .12);
        }

        .platform-body {
            padding: 28px 26px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .platform-platform {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-dark);
            text-transform: uppercase;
            letter-spacing: .08em;
            margin-bottom: 8px;
        }

        .platform-body h3 {
            font-size: 21px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 12px;
        }

        .platform-body p {
            font-size: 14.5px;
            color: var(--text-muted);
            margin-bottom: 16px;
            line-height: 1.7;
        }

        .platform-feats {
            list-style: none;
            padding: 0;
            margin: 0 0 22px;
            flex: 1;
        }

        .platform-feats li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 14px;
            color: var(--text-main);
            padding: 5px 0;
        }

        .platform-feats li i {
            color: var(--cyan);
            margin-top: 4px;
            font-size: 13px;
        }

        .platform-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 999px;
            padding: 11px 22px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            width: 100%;
        }

        .platform-btn:hover {
            background: var(--accent);
            color: #0b1220;
            transform: translateY(-2px);
        }

        /* ===== Download Steps (Dark) ===== */
        .download-steps {
            background: var(--dark-bg);
            position: relative;
            overflow: hidden;
        }

        .download-steps::before {
            content: "";
            position: absolute;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(240, 185, 11, .07), transparent 65%);
            top: -200px;
            right: -120px;
            border-radius: 50%;
            pointer-events: none;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            z-index: 2;
        }

        .step-item {
            background: rgba(255, 255, 255, .045);
            border: 1px solid rgba(255, 255, 255, .09);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            transition: var(--transition);
            position: relative;
            height: 100%;
        }

        .step-item:hover {
            background: rgba(255, 255, 255, .08);
            border-color: rgba(240, 185, 11, .35);
            transform: translateY(-6px);
        }

        .step-number {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            background: rgba(240, 185, 11, .12);
            border: 1px solid rgba(240, 185, 11, .3);
            border-radius: 14px;
            color: var(--accent);
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 22px;
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            line-height: 1.7;
            margin: 0;
        }

        .step-connector {
            position: absolute;
            top: 50%;
            right: -24px;
            width: 24px;
            height: 2px;
            background: rgba(240, 185, 11, .3);
            display: none;
        }

        .steps-grid .step-item:not(:last-child) {
            position: relative;
        }

        @media (min-width: 992px) {
            .steps-grid .step-item:not(:last-child)::after {
                content: "";
                position: absolute;
                top: 50%;
                right: -24px;
                width: 24px;
                height: 1px;
                background: rgba(240, 185, 11, .25);
            }
        }

        /* ===== System Requirements ===== */
        .req-panel {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            max-width: 960px;
            margin: 0 auto;
        }

        .req-panel-header {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 26px 30px;
            background: linear-gradient(135deg, var(--primary), var(--primary-2));
            color: #fff;
        }

        .req-panel-header i {
            font-size: 24px;
            color: var(--accent);
        }

        .req-panel-header h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0;
        }

        .req-panel-header span {
            font-size: 13px;
            color: rgba(255, 255, 255, .6);
            margin-left: auto;
        }

        .req-row {
            display: grid;
            grid-template-columns: 180px 1fr 110px;
            align-items: center;
            gap: 18px;
            padding: 18px 30px;
            border-bottom: 1px solid var(--border);
            transition: background .2s;
        }

        .req-row:last-child {
            border-bottom: none;
        }

        .req-row:hover {
            background: #f8fafc;
        }

        .req-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .req-label i {
            color: var(--accent-dark);
            width: 18px;
            text-align: center;
            font-size: 13px;
        }

        .req-value {
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .req-level {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 5px;
            font-size: 12.5px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            white-space: nowrap;
            width: fit-content;
        }

        .req-level.recommended {
            background: rgba(22, 184, 166, .1);
            color: #0d8f80;
            border: 1px solid rgba(22, 184, 166, .25);
        }

        .req-level.required {
            background: rgba(240, 185, 11, .1);
            color: #b07d00;
            border: 1px solid rgba(240, 185, 11, .28);
        }

        .req-level.optional {
            background: rgba(100, 116, 139, .1);
            color: var(--text-muted);
            border: 1px solid rgba(100, 116, 139, .18);
        }

        /* ===== Feature Section ===== */
        .feature-section {
            background: var(--bg-white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .feature-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .feature-media img {
            width: 100%;
            min-height: 320px;
            object-fit: cover;
        }

        .feature-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(8, 14, 26, .25), transparent 40%);
            pointer-events: none;
        }

        .feature-badge {
            position: absolute;
            bottom: 18px;
            left: 18px;
            background: rgba(11, 18, 32, .85);
            backdrop-filter: blur(8px);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            padding: 8px 18px;
            border-radius: 999px;
            z-index: 2;
            border: 1px solid rgba(240, 185, 11, .3);
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .feature-item {
            display: flex;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--border);
        }

        .feature-item:last-child {
            border-bottom: none;
        }

        .feature-icon {
            flex-shrink: 0;
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: rgba(240, 185, 11, .1);
            border: 1px solid rgba(240, 185, 11, .2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-dark);
            font-size: 18px;
        }

        .feature-content h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }

        .feature-content p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-light);
        }

        .faq-panel {
            max-width: 860px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--bg-white);
            border: 1px solid var(--border) !important;
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .accordion-button {
            font-size: 15.5px;
            font-weight: 600;
            color: var(--primary);
            background: var(--bg-white);
            padding: 20px 24px;
            box-shadow: none !important;
        }

        .accordion-button:not(.collapsed) {
            color: var(--accent-dark);
            background: rgba(240, 185, 11, .04);
        }

        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23f0b90b' class='bi bi-plus-lg' viewBox='0 0 16 16'%3e%3cpath d='M8 0a1 1 0 0 1 1 1v6h6a1 1 0 1 1 0 2H9v6a1 1 0 1 1-2 0V9H1a1 1 0 0 1 0-2h6V1a1 1 0 0 1 1-1z'/%3e%3c/svg%3e");
            transition: var(--transition);
            width: 18px;
            height: 18px;
        }

        .accordion-button:not(.collapsed)::after {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23f0b90b' class='bi bi-dash-lg' viewBox='0 0 16 16'%3e%3cpath d='M0 8a1 1 0 0 1 1-1h14a1 1 0 1 1 0 2H1a1 1 0 0 1-1-1z'/%3e%3c/svg%3e");
        }

        .accordion-body {
            padding: 0 24px 22px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.75;
            background: var(--bg-white);
        }

        /* ===== CTA Section ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            overflow: hidden;
            text-align: center;
        }

        .cta-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
        }

        .cta-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(8, 14, 26, .93), rgba(11, 18, 32, .82));
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: clamp(26px, 4vw, 38px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-section p {
            max-width: 600px;
            margin: 0 auto 32px;
            font-size: 16px;
            color: rgba(255, 255, 255, .72);
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .cta-note {
            margin-top: 22px;
            font-size: 13.5px;
            color: rgba(255, 255, 255, .45);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--darker);
            color: rgba(255, 255, 255, .65);
            padding: 64px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, .04);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand i {
            color: var(--accent);
            font-size: 22px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .55);
            max-width: 320px;
            margin: 0;
        }

        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 30px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: rgba(255, 255, 255, .55);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links a i {
            font-size: 10px;
            color: var(--accent);
        }

        .footer-links a:hover {
            color: var(--accent);
            transform: translateX(3px);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .06);
            padding-top: 28px;
            text-align: center;
            font-size: 13.5px;
            color: rgba(255, 255, 255, .35);
        }

        .footer-bottom p {
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
            }

            .features-row {
                gap: 40px;
            }
        }

        @media (max-width: 991px) {
            .section {
                padding: 70px 0;
            }

            .nav-links {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: rgba(8, 14, 26, .98);
                backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
                padding: 18px 20px 24px;
                margin: 0;
                display: none;
                border-bottom: 1px solid rgba(255, 255, 255, .08);
                box-shadow: 0 16px 40px rgba(0, 0, 0, .35);
                max-height: calc(100vh - var(--header-h));
                overflow-y: auto;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-link {
                padding: 12px 18px;
                font-size: 15px;
                border-radius: 10px;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .main-nav {
                gap: 10px;
            }

            .brand-logo {
                font-size: 17px;
            }

            .platform-card {
                margin-bottom: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .footer-desc {
                max-width: 100%;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }

            .category-hero {
                min-height: 380px;
                padding: 80px 0 60px;
            }

            .hero-metrics {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .hero-metric {
                padding: 12px 16px;
                min-width: 0;
            }

            .hero-metric .metric-value {
                font-size: 15px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .req-row {
                grid-template-columns: 1fr;
                gap: 8px;
                padding: 18px 20px;
            }

            .req-level {
                justify-content: flex-start;
            }

            .req-panel-header span {
                display: none;
            }

            .feature-media img {
                min-height: 220px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: center;
            }

            .cta-actions .btn-gold,
            .cta-actions .btn-outline-light {
                width: 100%;
                max-width: 320px;
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            body {
                font-size: 15px;
            }

            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .brand-logo {
                font-size: 16px;
                gap: 7px;
            }

            .brand-logo i {
                font-size: 19px;
            }

            .category-hero h1 {
                font-size: 26px;
            }

            .hero-lead {
                font-size: 14px;
            }

            .hero-metrics {
                grid-template-columns: 1fr;
            }

            .hero-metric {
                min-width: 0;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .section-head p {
                font-size: 14px;
            }

            .step-item {
                padding: 24px 20px;
            }

            .platform-body {
                padding: 22px 18px;
            }

            .req-panel-header {
                padding: 20px;
            }

            .req-panel-header h3 {
                font-size: 16px;
            }

            .footer-grid {
                gap: 28px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #6c5ce7;
            --primary-dark: #4f3ed4;
            --primary-light: #eef0fe;
            --accent: #ffb900;
            --accent-dark: #e0a400;
            --dark-bg: #14142b;
            --dark-bg-2: #1e1e3a;
            --bg: #f6f7fb;
            --white: #ffffff;
            --text: #1e2240;
            --text-muted: #656a8f;
            --border: #e7e8f0;
            --radius: 18px;
            --radius-sm: 12px;
            --radius-xs: 8px;
            --shadow-sm: 0 4px 14px rgba(30, 34, 64, 0.06);
            --shadow: 0 14px 38px rgba(30, 34, 64, 0.10);
            --shadow-lg: 0 28px 64px rgba(30, 34, 64, 0.18);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== Header ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-sm);
        }

        .main-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 78px;
            position: relative;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.3px;
            flex-shrink: 0;
        }

        .brand-logo i {
            color: var(--primary);
            font-size: 26px;
        }

        .brand-logo:hover {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg);
            border-radius: 100px;
            padding: 5px;
            transition: var(--transition);
        }

        .nav-link {
            display: inline-block;
            padding: 9px 20px;
            border-radius: 100px;
            font-size: 14.5px;
            font-weight: 600;
            color: var(--text-muted);
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.32);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 24px;
            background: var(--text);
            color: #fff;
            border-radius: 100px;
            font-weight: 600;
            font-size: 14px;
            white-space: nowrap;
            transition: var(--transition);
            border: none;
        }

        .nav-cta:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(108, 92, 231, 0.28);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text);
            cursor: pointer;
            padding: 8px 10px;
            border-radius: 10px;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ===== Hero / Banner ===== */
        .page-hero {
            position: relative;
            padding: 100px 0 78px;
            background: linear-gradient(135deg, #0f0f24 0%, #221a4c 55%, #4c3fd4 100%);
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.3;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(108, 92, 231, 0.25);
            filter: blur(90px);
            z-index: 1;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
        }

        .hero-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 22px;
        }

        .hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
        }

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

        .hero-breadcrumb .sep {
            font-size: 12px;
        }

        .hero-breadcrumb .current {
            color: var(--accent);
            font-weight: 600;
        }

        .page-hero h1 {
            font-size: 46px;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.25;
            margin-bottom: 18px;
        }

        .page-hero h1 .accent-text {
            color: var(--accent);
        }

        .hero-lead {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.72);
            max-width: 720px;
            margin-bottom: 34px;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ===== Buttons ===== */
        .btn {
            border-radius: 100px;
            padding: 12px 30px;
            font-weight: 700;
            font-size: 15px;
            transition: var(--transition);
            border: 2px solid transparent;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            line-height: 1.4;
        }

        .btn-accent {
            background: var(--accent);
            color: #14142b;
            border-color: var(--accent);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #14142b;
            transform: translateY(-3px);
            box-shadow: 0 14px 32px rgba(255, 185, 0, 0.3);
        }

        .btn-outline-light {
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            background: transparent;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-3px);
        }

        .btn-dark-custom {
            background: var(--text);
            color: #fff;
            border-color: var(--text);
        }

        .btn-dark-custom:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-3px);
            box-shadow: 0 10px 28px rgba(108, 92, 231, 0.32);
        }

        .btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 3px;
        }

        /* ===== Sections ===== */
        .section {
            padding: 90px 0;
        }

        .section-bg-soft {
            background: var(--white);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-dark {
            background: var(--dark-bg);
            color: #fff;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 52px;
        }

        .section-head .section-tag {
            display: inline-block;
            padding: 6px 18px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .section-dark .section-tag {
            background: rgba(255, 255, 255, 0.1);
            color: var(--accent);
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .section-dark .section-head p {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ===== Chips ===== */
        .chip-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            margin-bottom: 48px;
        }

        .chip {
            display: inline-block;
            padding: 10px 26px;
            border-radius: 100px;
            background: var(--white);
            border: 1px solid var(--border);
            font-weight: 600;
            font-size: 14px;
            color: var(--text-muted);
            transition: var(--transition);
            cursor: default;
        }

        .chip:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .chip.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.28);
        }

        /* ===== Strategy Cards ===== */
        .strategy-card {
            background: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .strategy-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow);
            border-color: rgba(108, 92, 231, 0.22);
        }

        .card-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--dark-bg);
        }

        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .strategy-card:hover .card-cover img {
            transform: scale(1.08);
        }

        .card-cover::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(20, 20, 43, 0) 50%, rgba(20, 20, 43, 0.35) 100%);
        }

        .card-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            padding: 5px 16px;
            border-radius: 100px;
            font-size: 12.5px;
            font-weight: 700;
            background: rgba(108, 92, 231, 0.92);
            color: #fff;
            backdrop-filter: blur(4px);
            letter-spacing: 0.3px;
        }

        .card-badge.hot {
            background: rgba(255, 185, 0, 0.94);
            color: #14142b;
        }

        .card-body-custom {
            padding: 26px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-body-custom .card-title {
            font-size: 17.5px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--text);
            transition: var(--transition);
        }

        .strategy-card:hover .card-title {
            color: var(--primary);
        }

        .card-body-custom .card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
        }

        .card-meta a {
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .card-meta a:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* ===== Steps ===== */
        .step-item {
            text-align: center;
            padding: 40px 28px 36px;
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .step-item:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }

        .step-item::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .step-item:hover::before {
            opacity: 1;
        }

        .step-icon {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 22px;
            transition: var(--transition);
        }

        .step-item:hover .step-icon {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 10px 24px rgba(108, 92, 231, 0.32);
            transform: scale(1.06);
        }

        .step-number {
            position: absolute;
            top: 18px;
            right: 20px;
            font-size: 44px;
            font-weight: 800;
            color: var(--border);
            line-height: 1;
            z-index: 0;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        /* ===== Stats ===== */
        .stat-card {
            text-align: center;
            padding: 42px 20px 38px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            height: 100%;
            transition: var(--transition);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(255, 185, 0, 0.3);
            transform: translateY(-4px);
        }

        .stat-icon {
            font-size: 30px;
            color: var(--accent);
            margin-bottom: 14px;
        }

        .stat-number {
            font-size: 42px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            letter-spacing: -1px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 8px;
        }

        /* ===== Ranking ===== */
        .rank-item {
            display: flex;
            align-items: center;
            gap: 22px;
            background: var(--white);
            border-radius: var(--radius);
            padding: 26px 30px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            margin-bottom: 16px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .rank-item:hover {
            box-shadow: var(--shadow);
            transform: translateX(10px);
            border-color: rgba(108, 92, 231, 0.2);
        }

        .rank-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
            opacity: 0;
            transition: var(--transition);
        }

        .rank-item:hover::before {
            opacity: 1;
        }

        .rank-medal {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            background: var(--primary-light);
            color: var(--primary);
            flex-shrink: 0;
        }

        .rank-item:nth-child(1) .rank-medal {
            background: linear-gradient(135deg, #ffd76e, #f5a623);
            color: #7a4d00;
            box-shadow: 0 6px 18px rgba(245, 166, 35, 0.3);
        }

        .rank-item:nth-child(2) .rank-medal {
            background: linear-gradient(135deg, #dbe6f0, #a9becd);
            color: #3e5363;
        }

        .rank-item:nth-child(3) .rank-medal {
            background: linear-gradient(135deg, #e8b08a, #c67c4a);
            color: #5a2e10;
        }

        .rank-info {
            flex: 1;
        }

        .rank-info h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .rank-info p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
        }

        .rank-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 700;
            white-space: nowrap;
        }

        .rank-tag i {
            font-size: 14px;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px 30px;
            margin-bottom: 14px;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(108, 92, 231, 0.3);
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            font-size: 16.5px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 14px;
            color: var(--text);
        }

        .faq-question i {
            color: var(--primary);
            font-size: 17px;
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            border-radius: 50%;
            font-size: 12px;
        }

        .faq-answer {
            padding-left: 38px;
            margin-top: 12px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            position: relative;
        }

        .cta-box {
            background: linear-gradient(135deg, #14142b 0%, #2a2258 60%, #4c3fd4 100%);
            border-radius: 28px;
            padding: 60px 64px;
            position: relative;
            overflow: hidden;
            color: #fff;
            text-align: center;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -40px;
            width: 300px;
            height: 300px;
            background: rgba(255, 185, 0, 0.15);
            border-radius: 50%;
            filter: blur(70px);
        }

        .cta-box::after {
            content: "";
            position: absolute;
            bottom: -100px;
            left: -60px;
            width: 260px;
            height: 260px;
            background: rgba(108, 92, 231, 0.35);
            border-radius: 50%;
            filter: blur(80px);
        }

        .cta-box .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-box h2 {
            font-size: 34px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 16px;
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 32px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0d0d1c;
            color: rgba(255, 255, 255, 0.62);
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand i {
            color: var(--primary);
            font-size: 24px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 380px;
        }

        .footer-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }

        .footer-links a i {
            font-size: 11px;
        }

        .footer-bottom {
            padding: 26px 0;
            text-align: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.38);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1199px) {
            .nav-links {
                gap: 2px;
            }

            .nav-link {
                padding: 8px 14px;
                font-size: 13.5px;
            }
        }

        @media (max-width: 991px) {
            .main-nav {
                height: 68px;
            }

            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                border-radius: 0;
                display: none;
                box-shadow: var(--shadow);
                gap: 8px;
            }

            .nav-links.open {
                display: flex;
            }

            .nav-link {
                width: 100%;
                text-align: center;
                padding: 12px 16px;
                font-size: 15px;
                border-radius: 12px;
            }

            .nav-link.active {
                border-radius: 12px;
            }

            .nav-toggle {
                display: block;
            }

            .nav-cta {
                display: none;
            }

            .page-hero {
                padding: 76px 0 56px;
            }

            .page-hero h1 {
                font-size: 36px;
            }

            .hero-lead {
                font-size: 16px;
            }

            .section {
                padding: 70px 0;
            }

            .section-head h2 {
                font-size: 30px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }

            .cta-box {
                padding: 48px 36px;
            }
        }

        @media (max-width: 767px) {
            .page-hero h1 {
                font-size: 30px;
            }

            .hero-lead {
                font-size: 15px;
            }

            .hero-btns .btn {
                padding: 10px 22px;
                font-size: 14px;
            }

            .section {
                padding: 56px 0;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .chip-wrap {
                gap: 8px;
                margin-bottom: 36px;
            }

            .chip {
                padding: 8px 18px;
                font-size: 13px;
            }

            .strategy-card .card-title {
                font-size: 16px;
            }

            .rank-item {
                flex-direction: column;
                text-align: center;
                padding: 24px 20px;
                gap: 12px;
            }

            .rank-item:hover {
                transform: translateY(-4px);
            }

            .rank-tag {
                font-size: 12px;
                padding: 6px 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-box {
                padding: 40px 24px;
            }

            .cta-box h2 {
                font-size: 26px;
            }

            .faq-item {
                padding: 20px;
            }

            .faq-question {
                font-size: 15px;
            }

            .faq-answer {
                padding-left: 0;
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .brand-logo {
                font-size: 18px;
            }

            .brand-logo i {
                font-size: 22px;
            }

            .page-hero {
                padding: 60px 0 44px;
            }

            .page-hero h1 {
                font-size: 26px;
            }

            .hero-lead {
                margin-bottom: 24px;
            }

            .hero-btns .btn {
                width: 100%;
                justify-content: center;
            }

            .section-head h2 {
                font-size: 23px;
            }

            .stat-number {
                font-size: 34px;
            }

            .step-item {
                padding: 32px 20px;
            }

            .step-icon {
                width: 60px;
                height: 60px;
                font-size: 24px;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #7c4dff;
  --primary-dark: #5b2ce4;
  --accent: #ffb347;
  --accent-dark: #ff8a00;
  --dark: #0d0b1f;
  --body-bg: #f6f7fb;
  --text: #1e1b33;
  --muted: #6b6b80;
  --border: #e6e8f0;
  --radius: 16px;
  --shadow: 0 12px 32px rgba(30, 27, 51, 0.08);
  --shadow-hover: 0 22px 44px rgba(30, 27, 51, 0.13);
  --font: 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--body-bg); color: var(--text); line-height: 1.65; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 1030; background: rgba(255, 255, 255, 0.86); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); }
.main-nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand-logo { display: inline-flex; align-items: center; gap: 10px; font-size: 1.3rem; font-weight: 800; color: var(--primary); }
.brand-logo i { font-size: 1.5rem; color: var(--accent-dark); }
.nav-links { display: flex; align-items: center; gap: 30px; margin: 0; padding: 0; list-style: none; }
.nav-link { position: relative; display: inline-block; font-size: 15px; font-weight: 600; color: var(--text); padding: 8px 2px; transition: color 0.25s; }
.nav-link::after { content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; border-radius: 2px; background: var(--primary); transition: width 0.25s; }
.nav-link:hover, .nav-link.active { color: var(--primary); }
.nav-link.active::after { width: 100%; }
.nav-cta { background: linear-gradient(135deg, #7c4dff, #5b2ce4); color: #fff; padding: 10px 22px; border-radius: 30px; font-weight: 600; font-size: 14px; border: 0; display: inline-flex; align-items: center; gap: 8px; transition: transform 0.25s, box-shadow 0.25s; }
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(124, 77, 255, 0.32); color: #fff; }
.nav-toggle { display: none; background: transparent; border: 0; font-size: 1.4rem; color: var(--text); cursor: pointer; padding: 6px 10px; }

/* Hero */
.hero { position: relative; background: center / cover no-repeat; padding: 120px 0; color: #fff; overflow: hidden; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(120deg, rgba(13, 10, 40, 0.9) 0%, rgba(70, 35, 160, 0.62) 52%, rgba(124, 77, 255, 0.28) 100%); }
.hero-content { position: relative; z-index: 2; text-align: center; max-width: 860px; margin: 0 auto; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; padding: 8px 20px; border-radius: 40px; background: rgba(255, 255, 255, 0.14); border: 1px solid rgba(255, 255, 255, 0.32); font-size: 14px; letter-spacing: 1px; }
.hero h1 { font-size: 3.1rem; font-weight: 800; margin: 22px 0 14px; letter-spacing: 1px; }
.hero p { font-size: 1.16rem; opacity: 0.92; }
.hero-actions { display: flex; justify-content: center; gap: 16px; margin-top: 32px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 13px 30px; border-radius: 40px; font-weight: 600; transition: all 0.25s; border: 0; }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { transform: translateY(-3px); box-shadow: 0 14px 28px rgba(0, 0, 0, 0.2); color: var(--primary); }
.btn-outline-light { border: 2px solid #fff; color: #fff; background: transparent; }
.btn-outline-light:hover { background: #fff; color: var(--primary); }
.hero-stats { display: flex; justify-content: center; gap: 50px; margin-top: 52px; flex-wrap: wrap; }
.hero-stats div { text-align: center; }
.hero-stats strong { display: block; font-size: 2rem; font-weight: 800; }
.hero-stats span { opacity: 0.82; font-size: 14px; }

/* Section */
.section { padding: 90px 0; }
.section-bg { background: linear-gradient(180deg, #f4f2ff 0%, #fff 100%); }
.section-dark { background: var(--dark); color: #fff; }
.section-head { text-align: center; max-width: 740px; margin: 0 auto 54px; }
.section-tag { display: inline-block; background: rgba(124, 77, 255, 0.1); color: var(--primary); padding: 6px 16px; border-radius: 40px; font-size: 13px; font-weight: 700; letter-spacing: 1px; }
.section-head h2 { font-size: 2.2rem; font-weight: 800; margin-top: 14px; }
.section-head p { color: var(--muted); margin-top: 10px; }
.section-head.light .section-tag { background: rgba(255, 255, 255, 0.14); color: #fff; }
.section-head.light h2 { color: #fff; }
.section-head.light p { color: rgba(255, 255, 255, 0.72); }

/* Feature card */
.feature-card { background: #fff; border-radius: var(--radius); padding: 30px 26px; box-shadow: var(--shadow); height: 100%; border: 1px solid var(--border); transition: transform 0.3s, box-shadow 0.3s; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.feature-icon { width: 56px; height: 56px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: #fff; background: linear-gradient(135deg, #7c4dff, #a855f7); margin-bottom: 20px; box-shadow: 0 8px 20px rgba(124, 77, 255, 0.25); }
.feature-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.feature-card p { color: var(--muted); font-size: 0.95rem; margin: 0; }

/* Promo card */
.promo-card { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); border: 1px solid var(--border); height: 100%; display: flex; flex-direction: column; transition: transform 0.3s, box-shadow 0.3s; }
.promo-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.promo-thumb { position: relative; height: 200px; overflow: hidden; flex-shrink: 0; }
.promo-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.45s; }
.promo-card:hover .promo-thumb img { transform: scale(1.06); }
.promo-badge { position: absolute; top: 14px; left: 14px; background: var(--accent); color: #1e1b33; padding: 4px 14px; border-radius: 30px; font-size: 12px; font-weight: 700; box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15); }
.promo-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.promo-body h3 { font-size: 1.18rem; font-weight: 700; }
.promo-body p { color: var(--muted); font-size: 0.94rem; margin-top: 8px; flex: 1; }
.promo-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 20px; }
.btn-accent { background: linear-gradient(135deg, #ffb347, #ff8a00); color: #1e1b33; font-size: 14px; padding: 9px 20px; border-radius: 30px; font-weight: 700; transition: transform 0.25s, box-shadow 0.25s; }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255, 138, 0, 0.32); color: #1e1b33; }
.btn-outline-primary { border: 2px solid var(--primary); color: var(--primary); background: transparent; font-size: 14px; padding: 9px 20px; border-radius: 30px; font-weight: 600; }
.btn-outline-primary:hover { background: var(--primary); color: #fff; }

/* Stage */
.stage-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stage-card { background: #fff; border-radius: var(--radius); padding: 34px 20px; text-align: center; border: 1px solid var(--border); box-shadow: var(--shadow); position: relative; transition: transform 0.3s, box-shadow 0.3s; }
.stage-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.stage-card.active { border-color: var(--primary); box-shadow: 0 0 0 5px rgba(124, 77, 255, 0.12); }
.stage-num { width: 46px; height: 46px; margin: 0 auto 14px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.05rem; }
.stage-card h4 { font-weight: 700; font-size: 1.05rem; }
.stage-card p { font-size: 0.88rem; color: var(--muted); margin-top: 8px; margin-bottom: 0; }

/* Rank */
.rank-panel { background: #fff; border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); border: 1px solid var(--border); height: 100%; }
.rank-title { font-size: 1.05rem; font-weight: 700; margin-bottom: 18px; display: flex; align-items: center; gap: 8px; }
.rank-list { list-style: none; padding: 0; margin: 0; }
.rank-item { display: flex; align-items: center; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.rank-item:last-child { border-bottom: 0; }
.rank-no { width: 36px; height: 36px; border-radius: 50%; background: #eef0ff; color: var(--primary); font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; font-size: 14px; }
.rank-no.first { background: linear-gradient(135deg, #ffb347, #ff8a00); color: #fff; }
.rank-no.second { background: linear-gradient(135deg, #c0c7d1, #8b95a5); color: #fff; }
.rank-no.third { background: linear-gradient(135deg, #e0a37a, #b06a3c); color: #fff; }
.rank-info { flex: 1; min-width: 0; }
.rank-info strong { display: block; font-size: 15px; }
.rank-info span { font-size: 13px; color: var(--muted); }
.rank-points { font-weight: 800; color: var(--primary); }

/* Activity list */
.activity-item { display: flex; gap: 24px; background: #fff; border-radius: var(--radius); padding: 18px; margin-bottom: 20px; box-shadow: var(--shadow); border: 1px solid var(--border); align-items: center; transition: transform 0.25s, box-shadow 0.25s; }
.activity-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.activity-item img { width: 200px; height: 136px; object-fit: cover; border-radius: 12px; flex-shrink: 0; }
.activity-info { flex: 1; min-width: 0; }
.activity-info h3 { font-size: 1.12rem; font-weight: 700; margin-bottom: 6px; }
.activity-info h3 a { color: var(--text); transition: color 0.2s; }
.activity-info h3 a:hover { color: var(--primary); }
.activity-info p { color: var(--muted); margin: 6px 0; font-size: 0.94rem; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.activity-meta { display: flex; align-items: center; gap: 12px; font-size: 13px; color: var(--muted); }
.tag { display: inline-block; padding: 4px 12px; border-radius: 30px; background: rgba(124, 77, 255, 0.1); color: var(--primary); font-size: 12px; font-weight: 600; }

/* FAQ */
.accordion-item { border-radius: var(--radius); border: 1px solid var(--border); margin-bottom: 16px; overflow: hidden; box-shadow: var(--shadow); background: #fff; }
.accordion-button { font-weight: 700; font-size: 1rem; padding: 20px 26px; background: #fff; color: var(--text); }
.accordion-button:not(.collapsed) { color: var(--primary); background: rgba(124, 77, 255, 0.05); box-shadow: none; }
.accordion-button:focus { box-shadow: 0 0 0 3px rgba(124, 77, 255, 0.2); }
.accordion-body { padding: 20px 26px; color: var(--muted); line-height: 1.75; }

/* CTA */
.cta { padding: 90px 0; }
.cta-inner { background: linear-gradient(135deg, #7c4dff, #4a1fbf); border-radius: calc(var(--radius) + 8px); padding: 70px 40px; text-align: center; color: #fff; position: relative; overflow: hidden; }
.cta-inner::before { content: ''; position: absolute; width: 280px; height: 280px; border-radius: 50%; background: rgba(255, 255, 255, 0.08); top: -100px; right: -80px; }
.cta-inner::after { content: ''; position: absolute; width: 180px; height: 180px; border-radius: 50%; background: rgba(255, 255, 255, 0.06); bottom: -70px; left: -50px; }
.cta-inner h2 { font-size: 2.1rem; font-weight: 800; position: relative; z-index: 1; }
.cta-inner p { opacity: 0.92; margin-top: 14px; max-width: 620px; margin-left: auto; margin-right: auto; position: relative; z-index: 1; }
.cta-inner .btn { margin-top: 30px; position: relative; z-index: 1; }

/* Footer */
.site-footer { background: #12132b; color: #a0a3bd; padding: 64px 0 22px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 50px; margin-bottom: 40px; }
.footer-brand { font-size: 1.3rem; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 10px; }
.footer-brand i { color: var(--accent); }
.footer-desc { margin-top: 14px; font-size: 0.92rem; max-width: 360px; }
.footer-title { font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: #a0a3bd; transition: color 0.2s, padding-left 0.2s; display: inline-flex; align-items: center; gap: 8px; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 24px; text-align: center; font-size: 14px; color: #7b7e99; }

/* Responsive */
@media (max-width: 991.98px) {
  .nav-links { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: flex-start; padding: 20px 24px; box-shadow: var(--shadow); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); gap: 6px; }
  .nav-links.open { display: flex; }
  .nav-link { width: 100%; padding: 10px 0; }
  .nav-link::after { display: none; }
  .nav-cta { display: none; }
  .nav-toggle { display: block; }
  .hero h1 { font-size: 2.2rem; }
  .hero { padding: 90px 0; }
  .section { padding: 64px 0; }
  .stage-row { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767.98px) {
  .hero-stats { gap: 24px; }
  .hero-stats strong { font-size: 1.5rem; }
  .activity-item { flex-direction: column; align-items: flex-start; }
  .activity-item img { width: 100%; height: auto; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .cta-inner { padding: 50px 24px; }
  .cta-inner h2 { font-size: 1.6rem; }
}
@media (max-width: 575.98px) {
  .hero { padding: 70px 0; }
  .hero h1 { font-size: 1.7rem; }
  .hero p { font-size: 1rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .stage-row { grid-template-columns: 1fr; }
  .rank-item { flex-wrap: wrap; }
  .section-head h2 { font-size: 1.6rem; }
}