/* roulang page: index */
:root {
            --color-primary: #1a3a6a;
            --color-primary-dark: #0f2a52;
            --color-accent: #c9933a;
            --color-accent-light: #dba855;
            --color-surface: #f9fafb;
            --color-text: #1f2937;
            --color-text-weak: #6b7280;
            --color-border: #e5e7eb;
            --radius-lg: 0.875rem;
            --radius-xl: 1.125rem;
            --radius-2xl: 1.5rem;
            --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 2px 6px rgba(0, 0, 0, 0.08), 0 8px 28px rgba(0, 0, 0, 0.06);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.25, 0.8, 0.25, 1.2);
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: #ffffff;
            min-height: 100vh;
        }

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

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

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

        input {
            font-family: inherit;
        }

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

        /* 导航样式 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow var(--transition-base);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
        }
        .nav-link {
            position: relative;
            font-size: 0.925rem;
            font-weight: 500;
            color: #374151;
            padding: 0.35rem 0.15rem;
            letter-spacing: 0.01em;
            transition: color var(--transition-base);
            white-space: nowrap;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            transition: width var(--transition-smooth);
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            width: 100%;
            background: var(--color-accent);
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            color: var(--color-primary);
            transition: color var(--transition-base);
        }
        .logo-text:hover {
            color: var(--color-primary-dark);
        }
        .logo-accent {
            color: var(--color-accent);
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.99);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            z-index: 99;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-base);
        }
        .mobile-menu.open {
            display: flex;
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-menu .nav-link {
            font-size: 1.2rem;
            padding: 0.5rem 1rem;
        }
        .hamburger {
            display: none;
            background: none;
            border: none;
            padding: 0.4rem;
            cursor: pointer;
            z-index: 101;
            flex-direction: column;
            gap: 5px;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Hero 背景遮罩 */
        .hero-overlay {
            background: linear-gradient(135deg, rgba(10, 29, 61, 0.88) 0%, rgba(15, 42, 82, 0.78) 40%, rgba(10, 29, 61, 0.85) 100%);
        }

        /* 卡片悬停 */
        .card-hover {
            transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
        }
        .card-hover:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        /* 统计数字动画 */
        .stat-number {
            font-variant-numeric: tabular-nums;
            font-feature-settings: "tnum";
        }

        /* 新闻列表项 */
        .news-item {
            transition: background var(--transition-base), transform var(--transition-base);
        }
        .news-item:hover {
            background: #f8fafc;
            transform: translateX(2px);
        }

        /* FAQ 样式 */
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
            overflow: hidden;
        }
        .faq-item:hover {
            border-color: #d1d5db;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
        }
        .faq-question {
            cursor: pointer;
            user-select: none;
            transition: color var(--transition-base);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1), padding 0.45s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .faq-item.open .faq-answer {
            max-height: 600px;
            padding-top: 0.75rem;
            padding-bottom: 1.25rem;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
        }
        .faq-icon {
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            flex-shrink: 0;
        }

        /* 按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            border-radius: 9999px;
            border: none;
            cursor: pointer;
            transition: all var(--transition-smooth);
            letter-spacing: 0.02em;
            font-size: 0.95rem;
        }
        .btn-primary:hover {
            background: #b07d2d;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(201, 147, 58, 0.35);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.6rem;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            border-radius: 9999px;
            border: 2px solid var(--color-primary);
            cursor: pointer;
            transition: all var(--transition-smooth);
            letter-spacing: 0.02em;
            font-size: 0.95rem;
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 58, 106, 0.3);
        }

        /* 页脚 */
        .site-footer {
            background: #0a1d3d;
            color: #cbd5e1;
        }
        .site-footer a {
            color: #cbd5e1;
            transition: color var(--transition-base);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-divider {
            border-color: rgba(255, 255, 255, 0.12);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .nav-link {
                font-size: 0.85rem;
                padding: 0.3rem 0.1rem;
            }
            .logo-text {
                font-size: 1.2rem;
            }
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .hero-title {
                font-size: 1.8rem !important;
            }
            .hero-desc {
                font-size: 0.95rem !important;
            }
            .stat-number {
                font-size: 1.8rem !important;
            }
            .brand-story-grid {
                flex-direction: column;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem !important;
            }
            .hero-desc {
                font-size: 0.875rem !important;
            }
            .btn-primary,
            .btn-outline {
                padding: 0.6rem 1.25rem;
                font-size: 0.85rem;
            }
            .stat-number {
                font-size: 1.5rem !important;
            }
            .card-grid {
                grid-template-columns: 1fr !important;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr !important;
            }
            .news-meta {
                flex-direction: column;
                gap: 0.25rem;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #d42b1f;
            --color-primary-dark: #931e17;
            --color-accent: #f98007;
            --color-accent-light: #ffbe4a;
            --color-bg: #f9fafb;
            --color-surface: #ffffff;
            --color-text: #1f2937;
            --color-text-weak: #6b7280;
            --color-border: #e5e7eb;
            --radius-md: 0.625rem;
            --radius-lg: 0.875rem;
            --radius-xl: 1rem;
            --radius-2xl: 1.25rem;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.08), 0 12px 32px rgba(0, 0, 0, 0.06);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            line-height: 1.7;
            background-color: #fafafa;
            color: #1f2937;
            min-height: 100vh;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(229, 231, 235, 0.7);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06), 0 6px 20px rgba(0, 0, 0, 0.04);
        }
        .logo-text {
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: 0.02em;
            color: #1f2937;
            transition: opacity var(--transition-fast);
            white-space: nowrap;
        }
        .logo-text:hover {
            opacity: 0.82;
        }
        .nav-link {
            position: relative;
            font-size: 0.925rem;
            font-weight: 500;
            color: #4b5563;
            letter-spacing: 0.015em;
            padding: 0.45rem 0.6rem;
            white-space: nowrap;
            transition: color var(--transition-fast);
            border-radius: 4px;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: transform var(--transition-smooth);
        }
        .nav-link:hover {
            color: #1f2937;
        }
        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            background: linear-gradient(135deg, #d42b1f 0%, #b22017 100%);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.55rem 1.35rem;
            border-radius: 2rem;
            letter-spacing: 0.02em;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, #b22017 0%, #931e17 100%);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            border: 2px solid #d1d5db;
            color: #374151;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.5rem 1.3rem;
            border-radius: 2rem;
            letter-spacing: 0.02em;
            background: transparent;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-outline:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(212, 43, 31, 0.03);
        }
        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            background: linear-gradient(135deg, #f98007 0%, #dd5c02 100%);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            padding: 0.55rem 1.5rem;
            border-radius: 2rem;
            letter-spacing: 0.02em;
            box-shadow: var(--shadow-md);
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-accent:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            padding: 6px;
            z-index: 110;
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: #374151;
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid #e5e7eb;
            padding: 1.5rem 1rem 2rem;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
            z-index: 99;
            animation: slideDown 0.25s ease;
        }
        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .mobile-menu.open {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.25rem;
        }
        .desktop-nav {
            display: flex;
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .nav-link {
                font-size: 1.05rem;
            }
        }
        @media (min-width: 769px) {
            .hamburger {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }

        /* ========== Banner ========== */
        .page-banner {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(3, 7, 18, 0.72) 0%, rgba(3, 7, 18, 0.55) 50%, rgba(3, 7, 18, 0.78) 100%);
            z-index: 1;
        }
        .page-banner .banner-content {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        @media (max-width: 640px) {
            .page-banner {
                min-height: 320px;
            }
        }

        /* ========== Cards ========== */
        .card-event {
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            border: 1px solid rgba(229, 231, 235, 0.6);
        }
        .card-event:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: rgba(212, 43, 31, 0.15);
        }
        .card-event .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #f3f4f6;
        }
        .card-event .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-event:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .badge-live {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: #ef4444;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.2rem 0.65rem;
            border-radius: 1rem;
            letter-spacing: 0.04em;
            animation: pulseBadge 2s infinite;
        }
        @keyframes pulseBadge {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.7;
            }
        }
        .badge-upcoming {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: #f59e0b;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.2rem 0.65rem;
            border-radius: 1rem;
            letter-spacing: 0.04em;
        }
        .badge-finished {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            background: #6b7280;
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.2rem 0.65rem;
            border-radius: 1rem;
            letter-spacing: 0.04em;
        }

        /* ========== Stat Card ========== */
        .stat-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.5rem 1.25rem;
            text-align: center;
            box-shadow: var(--shadow-md);
            border: 1px solid rgba(229, 231, 235, 0.5);
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 2.6rem;
            font-weight: 900;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #d42b1f 0%, #f98007 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
        }

        /* ========== FAQ ========== */
        .faq-item {
            border: 1px solid #e5e7eb;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: #fff;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: #d1d5db;
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1.1rem 1.3rem;
            font-weight: 600;
            font-size: 1rem;
            color: #1f2937;
            background: #fafafa;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            transition: background var(--transition-fast);
            cursor: pointer;
            border: none;
            font-family: inherit;
        }
        .faq-question:hover {
            background: #f3f4f6;
        }
        .faq-answer {
            padding: 0 1.3rem 1.1rem;
            font-size: 0.925rem;
            color: #4b5563;
            line-height: 1.8;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question {
            background: #fff;
            color: var(--color-primary);
        }
        .faq-icon {
            font-size: 0.8rem;
            transition: transform var(--transition-smooth);
            color: #9ca3af;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(160deg, #111827 0%, #1f2937 40%, #111827 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(212, 43, 31, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(249, 128, 7, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #0f172a;
            color: #9ca3af;
        }
        .footer-divider {
            border: none;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .site-footer h4 {
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        /* ========== Timeline ========== */
        .timeline-item {
            position: relative;
            padding-left: 2rem;
            border-left: 2px solid #e5e7eb;
            padding-bottom: 1.5rem;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
            border-left-color: transparent;
        }
        .timeline-dot {
            position: absolute;
            left: -7px;
            top: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--color-primary);
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px var(--color-primary);
        }
        .timeline-dot.upcoming {
            background: #f59e0b;
            box-shadow: 0 0 0 2px #f59e0b;
        }
        .timeline-dot.finished {
            background: #6b7280;
            box-shadow: 0 0 0 2px #6b7280;
        }

        /* ========== Responsive fine-tuning ========== */
        @media (max-width: 1024px) {
            .stat-number {
                font-size: 2.1rem;
            }
            .card-event .card-img-wrap {
                aspect-ratio: 16 / 9;
            }
        }
        @media (max-width: 640px) {
            .page-banner {
                min-height: 280px;
                background-position: center 40%;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 0.9rem 1rem;
            }
            .faq-answer {
                font-size: 0.85rem;
                padding: 0 1rem 0.9rem;
            }
            .btn-primary,
            .btn-accent,
            .btn-outline {
                font-size: 0.8rem;
                padding: 0.45rem 1rem;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1e3a5f;
            --color-primary-dark: #0d1a2f;
            --color-accent: #c4963a;
            --color-accent-light: #d4a853;
            --color-accent-dark: #876128;
            --color-bg: #fafbfc;
            --color-surface: #ffffff;
            --color-text: #1a1f2e;
            --color-text-weak: #6b7280;
            --color-text-muted: #9ca3af;
            --color-border: #e2e6ed;
            --color-border-light: #eef1f5;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 14px 40px rgba(0, 0, 0, 0.16);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s ease;
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            line-height: 1.7;
            background-color: var(--color-bg);
            color: var(--color-text);
            margin: 0;
            padding: 0;
        }

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

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

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

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

        /* Container */
        .container-custom {
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 640px) {
            .container-custom {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container-custom {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-normal);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            border-bottom-color: transparent;
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            color: var(--color-primary);
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }

        .logo-text:hover {
            opacity: 0.82;
        }

        .logo-text .logo-icon {
            color: var(--color-accent);
            font-weight: 800;
            font-size: 1.5rem;
        }

        /* Nav Links */
        .nav-link {
            position: relative;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-weak);
            padding: 0.4rem 0.6rem;
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background-color var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background-color: rgba(30, 58, 95, 0.04);
        }

        .nav-link.active {
            color: var(--color-accent);
            font-weight: 600;
        }

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

        .nav-link.active:hover::after {
            width: 28px;
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
            color: #fff;
            font-weight: 600;
            padding: 0.6rem 1.5rem;
            border-radius: var(--radius-md);
            border: none;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            box-shadow: 0 2px 8px rgba(196, 150, 58, 0.28);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(196, 150, 58, 0.4);
            background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 100%);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(196, 150, 58, 0.3);
            transition: all 0.08s ease;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            padding: 0.55rem 1.4rem;
            border-radius: var(--radius-md);
            border: 2px solid var(--color-primary);
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-outline:hover {
            background-color: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline:active {
            transform: translateY(0);
            transition: all 0.08s ease;
        }

        .btn-accent-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            background: transparent;
            color: var(--color-accent);
            font-weight: 600;
            padding: 0.55rem 1.4rem;
            border-radius: var(--radius-md);
            border: 2px solid var(--color-accent);
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-normal);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-accent-outline:hover {
            background-color: var(--color-accent);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 16px rgba(196, 150, 58, 0.35);
        }

        /* Hamburger */
        .hamburger {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: none;
            padding: 6px;
            cursor: pointer;
            z-index: 110;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition-fast);
        }

        .hamburger:hover {
            background-color: rgba(30, 58, 95, 0.05);
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2.2px;
            background-color: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition-normal);
            transform-origin: center;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile Menu */
        .mobile-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 99;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2rem;
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
            transition: all var(--transition-slow);
            padding: 2rem;
        }

        .mobile-menu.open {
            opacity: 1;
            visibility: visible;
            pointer-events: auto;
        }

        .mobile-menu .nav-link {
            font-size: 1.2rem;
            padding: 0.6rem 1.2rem;
        }

        .mobile-menu .nav-link.active::after {
            bottom: -4px;
            width: 24px;
            height: 3px;
        }

        /* Desktop nav visibility */
        .desktop-nav {
            display: none;
        }

        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex;
            }
            .hamburger {
                display: none;
            }
            .mobile-menu {
                display: none;
            }
        }

        /* Section spacing */
        .section-padding {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }

        @media (min-width: 768px) {
            .section-padding {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }

        @media (min-width: 1024px) {
            .section-padding {
                padding-top: 6rem;
                padding-bottom: 6rem;
            }
        }

        /* Cards */
        .card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }

        .card-rank {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition-normal);
            padding: 1.25rem;
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .card-rank:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-accent);
            background: #fffefb;
        }

        .card-rank .rank-number {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .card-rank .rank-number.top-1 {
            background: linear-gradient(135deg, #f6c445, #e6a817);
            color: #fff;
            box-shadow: 0 3px 12px rgba(230, 168, 23, 0.35);
        }

        .card-rank .rank-number.top-2 {
            background: linear-gradient(135deg, #c0c0c0, #a0a0a0);
            color: #fff;
            box-shadow: 0 3px 10px rgba(160, 160, 160, 0.3);
        }

        .card-rank .rank-number.top-3 {
            background: linear-gradient(135deg, #cd7f32, #a8622a);
            color: #fff;
            box-shadow: 0 3px 10px rgba(168, 98, 42, 0.3);
        }

        .card-rank .rank-number.normal {
            background: #f5f7fa;
            color: var(--color-text-weak);
            border: 2px solid var(--color-border-light);
        }

        /* Stat card */
        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            padding: 1.75rem 1.5rem;
            text-align: center;
            transition: all var(--transition-normal);
        }

        .stat-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--color-accent);
        }

        .stat-card .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-accent);
            letter-spacing: -0.02em;
            line-height: 1.1;
        }

        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-weak);
            margin-top: 0.4rem;
            letter-spacing: 0.03em;
        }

        /* Badge / Tag */
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.7rem;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .tag-hot {
            background: #fef2f2;
            color: #dc2626;
        }

        .tag-new {
            background: #ecfdf5;
            color: #059669;
        }

        .tag-trending {
            background: #fffbeb;
            color: #d97706;
        }

        .tag-popular {
            background: #eff6ff;
            color: #2563eb;
        }

        /* Banner / Hero */
        .page-hero {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 4rem 0;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(13, 26, 47, 0.88) 0%, rgba(30, 58, 95, 0.78) 50%, rgba(13, 26, 47, 0.9) 100%);
            z-index: 1;
        }

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

        /* Footer */
        .site-footer {
            background: var(--color-primary-dark);
            color: #c8cdd6;
        }

        .footer-divider {
            border: none;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        .footer-grid a {
            transition: color var(--transition-fast);
        }

        .footer-grid a:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid var(--color-border-light);
            padding: 1.2rem 0;
            cursor: pointer;
            transition: all var(--transition-fast);
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border-light);
        }

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

        .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            transition: color var(--transition-fast);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-normal);
            color: var(--color-text-weak);
            font-size: 0.95rem;
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 0.8rem;
        }

        .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-normal);
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

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

        /* Responsive adjustments */
        @media (max-width: 767px) {
            .page-hero {
                padding: 2.5rem 0;
            }
            .stat-card .stat-number {
                font-size: 2.2rem;
            }
            .card-rank {
                flex-wrap: wrap;
            }
            .section-padding {
                padding-top: 2.5rem;
                padding-bottom: 2.5rem;
            }
        }

        @media (max-width: 520px) {
            .nav-link {
                font-size: 0.85rem;
            }
            .stat-card {
                padding: 1.25rem 1rem;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
            .card-rank .rank-number {
                width: 36px;
                height: 36px;
                font-size: 0.95rem;
            }
        }

        /* Pulse dot for live data */
        .pulse-dot {
            display: inline-block;
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background-color: #22c55e;
            box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% {
                box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.6);
            }
            70% {
                box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
            }
        }

        /* Focus visible */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

/* roulang page: category2 */
:root {
            --color-accent-400: #e8943a;
            --color-accent-500: #d47e22;
            --color-accent-600: #b86a18;
            --color-surface-50: #fafaf9;
            --color-surface-100: #f5f3f0;
            --color-surface-200: #ebe6df;
            --color-surface-700: #4a4038;
            --color-surface-800: #2d2620;
            --color-surface-900: #1a1511;
            --color-surface-950: #0f0c09;
            --color-text-primary: #1a1511;
            --color-text-secondary: #6b5f54;
            --color-text-weak: #8c8072;
            --color-border: #d9d1c7;
            --color-border-light: #ebe6df;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --shadow-card: 0 2px 16px rgba(26, 21, 17, 0.06), 0 0 1px rgba(26, 21, 17, 0.08);
            --shadow-card-hover: 0 8px 32px rgba(26, 21, 17, 0.10), 0 2px 8px rgba(26, 21, 17, 0.06);
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            margin: 0;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            line-height: 1.7;
            color: var(--color-text-primary);
            background-color: #fcfbf9;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

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

        /* ========== Header / Navigation ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(252, 251, 249, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: 0 1px 0 rgba(26, 21, 17, 0.03);
            transition: all var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: 0 2px 20px rgba(26, 21, 17, 0.07);
            border-bottom-color: transparent;
        }

        .logo-text {
            font-weight: 700;
            font-size: 1.25rem;
            letter-spacing: 0.02em;
            color: var(--color-surface-900);
            transition: opacity var(--transition-smooth);
            white-space: nowrap;
        }
        .logo-text:hover {
            opacity: 0.82;
        }
        .logo-text .text-accent-500 {
            color: var(--color-accent-500);
        }

        /* Desktop Nav */
        .desktop-nav {
            display: flex;
            align-items: center;
            gap: 0.25rem;
        }

        .nav-link {
            position: relative;
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            padding: 0.4rem 0.65rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-smooth);
            white-space: nowrap;
            letter-spacing: 0.01em;
        }
        .nav-link:hover {
            color: var(--color-surface-900);
            background: rgba(26, 21, 17, 0.03);
        }
        .nav-link.active {
            color: var(--color-accent-600);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2.5px;
            background: var(--color-accent-500);
            border-radius: 4px;
            transition: all var(--transition-smooth);
        }
        .nav-link:focus-visible {
            outline: 2px solid var(--color-accent-400);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        /* Primary Button */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            background: linear-gradient(135deg, #e8943a 0%, #d47e22 50%, #b86a18 100%);
            color: #fff;
            font-weight: 600;
            padding: 0.6rem 1.4rem;
            border-radius: 2rem;
            border: none;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            box-shadow: 0 2px 10px rgba(212, 126, 34, 0.28);
            transition: all var(--transition-smooth);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-primary:hover {
            box-shadow: 0 6px 22px rgba(212, 126, 34, 0.42);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 1px 4px rgba(212, 126, 34, 0.30);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--color-accent-400);
            outline-offset: 3px;
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.4rem;
            background: transparent;
            color: var(--color-accent-600);
            font-weight: 600;
            padding: 0.55rem 1.3rem;
            border-radius: 2rem;
            border: 1.5px solid var(--color-accent-400);
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: rgba(212, 126, 34, 0.06);
            border-color: var(--color-accent-500);
            color: var(--color-accent-700);
            transform: translateY(-1px);
        }
        .btn-outline:active {
            transform: translateY(0);
            background: rgba(212, 126, 34, 0.12);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--color-accent-400);
            outline-offset: 3px;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 0;
            z-index: 110;
            border-radius: var(--radius-sm);
            transition: background var(--transition-smooth);
        }
        .hamburger:hover {
            background: rgba(26, 21, 17, 0.04);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-surface-700);
            border-radius: 2px;
            transition: all 0.32s cubic-bezier(0.4, 0, 0.2, 1);
            transform-origin: center;
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .hamburger:focus-visible {
            outline: 2px solid var(--color-accent-400);
            outline-offset: 2px;
        }

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(252, 251, 249, 0.97);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--color-border-light);
            padding: 1.5rem 1.5rem 2rem;
            box-shadow: 0 12px 36px rgba(26, 21, 17, 0.08);
            z-index: 99;
            animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .mobile-menu.open {
            display: block;
        }
        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-12px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .mobile-menu .nav-link {
            font-size: 1.1rem;
            padding: 0.55rem 1rem;
            width: 100%;
            text-align: center;
            border-radius: var(--radius-md);
        }
        .mobile-menu .nav-link.active {
            background: rgba(212, 126, 34, 0.07);
            color: var(--color-accent-600);
        }
        .mobile-menu .nav-link.active::after {
            display: none;
        }

        /* ========== Sections ========== */
        .section-padding {
            padding: 4rem 0;
        }
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-surface-900);
            letter-spacing: 0.015em;
            margin-bottom: 0.5rem;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-weak);
            max-width: 600px;
            line-height: 1.6;
        }
        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }

        /* ========== Cards ========== */
        .game-card {
            background: #fff;
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
        }
        .game-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: #d9d1c7;
        }
        .game-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--color-surface-100);
        }
        .game-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .game-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .game-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-accent-500);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.3rem 0.7rem;
            border-radius: 2rem;
            letter-spacing: 0.03em;
            z-index: 2;
        }
        .game-card .card-badge.hot {
            background: #e04a3a;
        }
        .game-card .card-badge.new {
            background: #3a8f5c;
        }
        .game-card .card-body {
            padding: 1.2rem 1.3rem 1.3rem;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .game-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-surface-900);
            line-height: 1.3;
        }
        .game-card .card-desc {
            font-size: 0.875rem;
            color: var(--color-text-weak);
            line-height: 1.5;
        }
        .game-card .card-meta {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            font-size: 0.8rem;
            color: var(--color-text-secondary);
            margin-top: auto;
            padding-top: 0.6rem;
            border-top: 1px solid var(--color-border-light);
        }
        .game-card .card-meta i {
            color: var(--color-accent-400);
            font-size: 0.7rem;
        }

        /* Category Tag */
        .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.45rem 1rem;
            border-radius: 2rem;
            font-size: 0.875rem;
            font-weight: 500;
            background: var(--color-surface-100);
            color: var(--color-surface-700);
            border: 1px solid transparent;
            transition: all var(--transition-smooth);
            cursor: pointer;
            white-space: nowrap;
        }
        .category-tag:hover {
            background: #fff;
            border-color: var(--color-accent-400);
            color: var(--color-accent-600);
            box-shadow: 0 2px 10px rgba(212, 126, 34, 0.10);
        }
        .category-tag.active-tag {
            background: var(--color-accent-500);
            color: #fff;
            border-color: var(--color-accent-500);
            font-weight: 600;
        }
        .category-tag:focus-visible {
            outline: 2px solid var(--color-accent-400);
            outline-offset: 2px;
        }

        /* Stat Card */
        .stat-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.8rem 1.5rem;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-accent-500);
            letter-spacing: -0.02em;
            line-height: 1;
        }
        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            margin-top: 0.5rem;
            font-weight: 500;
        }

        /* Feature Card */
        .feature-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 1.8rem 1.5rem;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            text-align: center;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
            border-color: #d9d1c7;
        }
        .feature-card .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(212, 126, 34, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            font-size: 1.4rem;
            color: var(--color-accent-500);
        }
        .feature-card .feature-title {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--color-surface-900);
            margin-bottom: 0.4rem;
        }
        .feature-card .feature-desc {
            font-size: 0.875rem;
            color: var(--color-text-weak);
            line-height: 1.5;
        }

        /* ========== Inner Banner ========== */
        .inner-banner {
            position: relative;
            padding: 5rem 0 4rem;
            background: linear-gradient(170deg, #f5f3f0 0%, #ebe6df 40%, #fafaf9 100%);
            overflow: hidden;
        }
        .inner-banner::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(212, 126, 34, 0.04);
            pointer-events: none;
        }
        .inner-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(212, 126, 34, 0.03);
            pointer-events: none;
        }
        .inner-banner .banner-content {
            position: relative;
            z-index: 1;
        }
        .inner-banner .banner-breadcrumb {
            font-size: 0.85rem;
            color: var(--color-text-weak);
            margin-bottom: 0.8rem;
        }
        .inner-banner .banner-breadcrumb a {
            color: var(--color-accent-500);
        }
        .inner-banner .banner-breadcrumb a:hover {
            color: var(--color-accent-600);
        }
        .inner-banner .banner-title {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-surface-900);
            letter-spacing: 0.02em;
            line-height: 1.25;
        }
        .inner-banner .banner-desc {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 620px;
            line-height: 1.7;
            margin-top: 0.8rem;
        }

        /* ========== FAQ ========== */
        .faq-item {
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-lg);
            background: #fff;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: #d9d1c7;
        }
        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            padding: 1.2rem 1.4rem;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-surface-800);
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            transition: color var(--transition-smooth);
            letter-spacing: 0.01em;
        }
        .faq-question:hover {
            color: var(--color-accent-600);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            color: var(--color-accent-400);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 1.4rem;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 1.4rem 1.2rem;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--color-accent-400);
            outline-offset: -2px;
            border-radius: var(--radius-lg);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(160deg, #1a1511 0%, #2d2620 50%, #1a1511 100%);
            border-radius: var(--radius-2xl);
            padding: 3rem 2.5rem;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(232, 148, 58, 0.08);
            pointer-events: none;
        }
        .cta-section .cta-title {
            font-size: 1.6rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            position: relative;
            z-index: 1;
        }
        .cta-section .cta-desc {
            color: #b8ada0;
            margin-top: 0.6rem;
            font-size: 0.95rem;
            position: relative;
            z-index: 1;
            line-height: 1.6;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #1a1511;
            color: #b8ada0;
            margin-top: auto;
        }
        .site-footer .footer-grid a {
            transition: color var(--transition-smooth);
        }
        .site-footer .footer-grid a:hover {
            color: #fff;
        }
        .footer-divider {
            border: none;
            height: 1px;
            background: rgba(255, 255, 255, 0.08);
        }
        .site-footer .footer-grid a:focus-visible {
            outline: 2px solid var(--color-accent-400);
            outline-offset: 2px;
            border-radius: 3px;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .desktop-nav {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .inner-banner .banner-title {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }
        @media (max-width: 768px) {
            .inner-banner {
                padding: 3.5rem 0 2.5rem;
            }
            .inner-banner .banner-title {
                font-size: 1.65rem;
            }
            .inner-banner .banner-desc {
                font-size: 0.9rem;
            }
            .section-padding {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .stat-card .stat-number {
                font-size: 1.8rem;
            }
            .cta-section {
                padding: 2rem 1.5rem;
                border-radius: var(--radius-xl);
            }
            .cta-section .cta-title {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .inner-banner .banner-title {
                font-size: 1.4rem;
            }
            .game-card .card-body {
                padding: 1rem;
            }
            .game-card .card-title {
                font-size: 1rem;
            }
            .category-tag {
                font-size: 0.8rem;
                padding: 0.35rem 0.75rem;
            }
            .feature-card {
                padding: 1.3rem 1rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 1rem 1.1rem;
            }
            .site-footer {
                text-align: center;
            }
        }

/* roulang page: category4 */
:root {
            --color-primary: #1a1a2e;
            --color-accent: #f59e0b;
            --color-accent-light: #fbbf24;
            --color-accent-dark: #d97706;
            --color-bg: #fafafa;
            --color-surface: #ffffff;
            --color-text: #1f1f1f;
            --color-text-weak: #6b7280;
            --color-text-muted: #9ca3af;
            --color-border: #e5e7eb;
            --color-border-light: #f0f0f0;
            --color-footer-bg: #141414;
            --color-footer-text: #9ca3af;
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-full: 2rem;
            --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 16px rgba(0, 0, 0, 0.04);
            --shadow-lg: 0 2px 8px rgba(0, 0, 0, 0.1), 0 8px 28px rgba(0, 0, 0, 0.07);
            --shadow-xl: 0 4px 24px rgba(0, 0, 0, 0.09);
            --transition-fast: 0.18s ease;
            --transition-smooth: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1280px;
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            letter-spacing: 0.01em;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-smooth);
        }
        .site-header.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.07);
        }

        .logo-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }
        .logo-text:hover {
            opacity: 0.82;
        }
        .logo-text span.text-accent-500 {
            color: var(--color-accent);
        }

        .nav-link {
            position: relative;
            font-size: 0.925rem;
            font-weight: 500;
            color: #4b5563;
            padding: 0.4rem 0.6rem;
            border-radius: 0.375rem;
            transition: color var(--transition-fast), background var(--transition-fast);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .nav-link:hover {
            color: #1f1f1f;
            background: rgba(245, 158, 11, 0.06);
        }
        .nav-link.active {
            color: #1f1f1f;
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 1.25rem;
            height: 2.5px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-btn, 0.625rem);
            padding: 0.55rem 1.25rem;
            font-size: 0.9rem;
            border: none;
            letter-spacing: 0.025em;
            transition: all var(--transition-smooth);
            box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.4);
            transform: translateY(-1px);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 1px 4px rgba(245, 158, 11, 0.3);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--color-primary);
            font-weight: 600;
            border-radius: var(--radius-btn, 0.625rem);
            padding: 0.5rem 1.2rem;
            font-size: 0.9rem;
            border: 1.5px solid #d1d5db;
            letter-spacing: 0.025em;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent-dark);
            background: rgba(245, 158, 11, 0.04);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: var(--color-accent);
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-btn, 0.625rem);
            padding: 0.65rem 1.5rem;
            font-size: 0.95rem;
            border: none;
            letter-spacing: 0.03em;
            transition: all var(--transition-smooth);
            box-shadow: 0 2px 10px rgba(245, 158, 11, 0.35);
            white-space: nowrap;
        }
        .btn-accent:hover {
            background: #fbbf24;
            box-shadow: 0 6px 20px rgba(245, 158, 11, 0.45);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-lg {
            padding: 0.8rem 2rem;
            font-size: 1rem;
            border-radius: 0.75rem;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            z-index: 110;
            border-radius: 6px;
            transition: background var(--transition-fast);
        }
        .hamburger:hover {
            background: rgba(0, 0, 0, 0.04);
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: #2d2d2d;
            border-radius: 2px;
            transition: all var(--transition-smooth);
            transform-origin: center;
        }
        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xl);
            padding: 1.5rem 1rem 2rem;
            z-index: 99;
            animation: slideDown 0.25s ease;
        }
        .mobile-menu.open {
            display: block;
        }
        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .mobile-menu .nav-link {
            font-size: 1.1rem;
            padding: 0.6rem 1rem;
            width: 100%;
            text-align: center;
            border-radius: 0.5rem;
        }
        .mobile-menu .nav-link.active {
            background: rgba(245, 158, 11, 0.08);
            color: #1f1f1f;
            font-weight: 600;
        }
        .mobile-menu .nav-link.active::after {
            display: none;
        }

        @media (max-width: 1023px) {
            .desktop-nav {
                display: none !important;
            }
            .hamburger {
                display: flex;
            }
            .site-header .desktop-nav {
                display: none;
            }
            .site-header .hamburger {
                display: flex;
            }
        }
        @media (min-width: 1024px) {
            .hamburger {
                display: none !important;
            }
            .mobile-menu {
                display: none !important;
            }
            .desktop-nav {
                display: flex !important;
            }
        }

        /* ========== SECTION SPACING ========== */
        .section-padding {
            padding: 3.5rem 0;
        }
        @media (min-width: 768px) {
            .section-padding {
                padding: 5rem 0;
            }
        }
        @media (min-width: 1024px) {
            .section-padding {
                padding: 6rem 0;
            }
        }

        .section-title {
            font-size: 1.65rem;
            font-weight: 700;
            color: #1a1a2e;
            letter-spacing: 0.03em;
            margin-bottom: 0.5rem;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2rem;
            }
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: #6b7280;
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== CARD STYLES ========== */
        .card-base {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-md);
            transition: all var(--transition-smooth);
            overflow: hidden;
        }
        .card-base:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: #e5e7eb;
        }
        .card-clickable {
            cursor: pointer;
        }
        .card-image-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #f3f4f6;
        }
        .card-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .card-base:hover .card-image-wrap img {
            transform: scale(1.06);
        }
        .card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 0.25rem 0.7rem;
            border-radius: var(--radius-full);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .tag-hot {
            background: #fef2f2;
            color: #dc2626;
        }
        .tag-new {
            background: #ecfdf5;
            color: #059669;
        }
        .tag-popular {
            background: #fffbeb;
            color: #d97706;
        }
        .tag-expert {
            background: #eff6ff;
            color: #2563eb;
        }

        /* ========== BANNER ========== */
        .inner-banner {
            position: relative;
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: 5rem 0 4rem;
            overflow: hidden;
        }
        .inner-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 26, 46, 0.82) 0%, rgba(26, 26, 46, 0.55) 50%, rgba(26, 26, 46, 0.7) 100%);
            z-index: 1;
        }
        .inner-banner .banner-content {
            position: relative;
            z-index: 2;
        }
        .breadcrumb-link {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.75);
            transition: color var(--transition-fast);
        }
        .breadcrumb-link:hover {
            color: #fbbf24;
        }
        .breadcrumb-sep {
            color: rgba(255, 255, 255, 0.4);
            margin: 0 0.4rem;
        }

        /* ========== RANKING LIST ========== */
        .rank-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 1.2rem;
            background: #fff;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .rank-item:hover {
            box-shadow: var(--shadow-md);
            border-color: #e5e7eb;
            transform: translateX(2px);
        }
        .rank-number {
            flex-shrink: 0;
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            color: #fff;
        }
        .rank-top-1 {
            background: linear-gradient(135deg, #f59e0b, #d97706);
        }
        .rank-top-2 {
            background: linear-gradient(135deg, #94a3b8, #64748b);
        }
        .rank-top-3 {
            background: linear-gradient(135deg, #d4a574, #b87333);
        }
        .rank-other {
            background: #e5e7eb;
            color: #6b7280;
        }

        /* ========== FAQ ========== */
        .faq-item {
            background: #fff;
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            margin-bottom: 0.75rem;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: #d1d5db;
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1.1rem 1.4rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: #1f1f1f;
            background: transparent;
            border: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            cursor: pointer;
            letter-spacing: 0.02em;
            line-height: 1.5;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            transition: transform var(--transition-smooth);
            font-size: 0.85rem;
            color: #9ca3af;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
            padding: 0 1.4rem;
            font-size: 0.9rem;
            color: #4b5563;
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 1.4rem 1.2rem;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-footer-bg);
            color: var(--color-footer-text);
        }
        .site-footer a {
            color: var(--color-footer-text);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-divider {
            border: none;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-grid {
            gap: 2rem;
        }
        @media (max-width: 640px) {
            .footer-grid {
                gap: 1.5rem;
            }
        }
        .site-footer h4 {
            letter-spacing: 0.06em;
            text-transform: uppercase;
            font-size: 0.8rem;
            color: #d1d5db;
        }

        /* ========== UTILITY ========== */
        .badge-accent {
            display: inline-block;
            background: rgba(245, 158, 11, 0.1);
            color: #d97706;
            font-weight: 600;
            font-size: 0.78rem;
            padding: 0.2rem 0.65rem;
            border-radius: var(--radius-full);
            letter-spacing: 0.025em;
        }
        .text-accent-400 {
            color: #fbbf24 !important;
        }
        .text-accent-500 {
            color: #f59e0b !important;
        }

        /* ========== RESPONSIVE FINE-TUNING ========== */
        @media (max-width: 768px) {
            .inner-banner {
                padding: 3.5rem 0 2.5rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .card-base:hover {
                transform: translateY(-2px);
            }
            .rank-item {
                padding: 0.8rem 1rem;
                gap: 0.7rem;
            }
            .rank-number {
                width: 2rem;
                height: 2rem;
                font-size: 0.85rem;
            }
        }
        @media (max-width: 520px) {
            .inner-banner {
                padding: 2.8rem 0 2rem;
            }
            .inner-banner h1 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .btn-accent,
            .btn-primary {
                font-size: 0.85rem;
                padding: 0.5rem 1rem;
            }
            .btn-lg {
                padding: 0.65rem 1.4rem;
                font-size: 0.9rem;
            }
            .card-image-wrap {
                aspect-ratio: 16 / 11;
            }
            .faq-question {
                font-size: 0.88rem;
                padding: 0.9rem 1rem;
            }
            .faq-answer {
                font-size: 0.83rem;
            }
            .faq-item.open .faq-answer {
                padding: 0 1rem 1rem;
            }
        }

        /* Focus styles for accessibility */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid #f59e0b;
            outline-offset: 3px;
            border-radius: 4px;
        }

/* roulang page: category5 */
:root {
            --color-primary: #c98f2e;
            --color-primary-light: #dba54d;
            --color-primary-dark: #925e1d;
            --color-accent: #e6bc3e;
            --color-accent-glow: #efd06e;
            --color-bg-dark: #14110c;
            --color-bg-mid: #1c1813;
            --color-bg-card: #221d16;
            --color-border: #332c22;
            --color-text: #e8e0d5;
            --color-text-muted: #a09688;
            --color-text-dim: #6b6358;
            --color-white: #faf7f0;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
            --shadow-glow: 0 0 24px rgba(230, 188, 62, 0.25);
            --shadow-gold: 0 4px 20px rgba(201, 143, 46, 0.35);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.7;
            color: var(--color-text);
            background-color: var(--color-bg-dark);
            min-height: 100vh;
            letter-spacing: 0.01em;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }

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

        /* Container */
        .container-main {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 640px) {
            .container-main {
                padding-left: 28px;
                padding-right: 28px;
            }
        }

        @media (min-width: 1024px) {
            .container-main {
                padding-left: 36px;
                padding-right: 36px;
            }
        }

        /* Site Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(20, 17, 12, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--color-border);
            transition: all var(--transition-normal);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.35);
        }

        .site-header.scrolled {
            background: rgba(20, 17, 12, 0.95);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.5);
        }

        .logo-text {
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-white);
            display: flex;
            align-items: center;
            gap: 6px;
            letter-spacing: 0.03em;
            transition: opacity var(--transition-fast);
            white-space: nowrap;
        }

        .logo-text:hover {
            opacity: 0.85;
        }

        .logo-text .logo-icon {
            color: var(--color-accent);
            font-weight: 900;
            font-size: 1.65rem;
            font-family: 'Noto Serif SC', serif;
        }

        /* Desktop Nav */
        .desktop-nav {
            display: none;
        }

        @media (min-width: 1024px) {
            .desktop-nav {
                display: flex;
                align-items: center;
            }
        }

        .nav-link {
            position: relative;
            font-size: 0.93rem;
            font-weight: 500;
            color: var(--color-text-muted);
            padding: 6px 10px;
            white-space: nowrap;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            transition: transform var(--transition-normal);
            transform-origin: center;
        }

        .nav-link:hover {
            color: var(--color-white);
        }

        .nav-link:hover::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-link.active {
            color: var(--color-accent);
            font-weight: 600;
        }

        .nav-link.active::after {
            transform: translateX(-50%) scaleX(1);
            background: var(--color-accent);
            height: 2.5px;
            width: 70%;
        }

        /* Hamburger */
        .hamburger {
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 38px;
            height: 38px;
            background: transparent;
            border: none;
            cursor: pointer;
            z-index: 110;
            padding: 4px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .hamburger:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-text);
            border-radius: 2px;
            transition: all var(--transition-normal);
            transform-origin: center;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
            background: var(--color-accent);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
            transform: scaleX(0);
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
            background: var(--color-accent);
        }

        @media (min-width: 1024px) {
            .hamburger {
                display: none;
            }
        }

        /* Mobile Menu */
        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(28, 24, 19, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border);
            padding: 24px 20px 32px;
            z-index: 99;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
            animation: slideDown 0.3s ease;
        }

        .mobile-menu.open {
            display: block;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @media (min-width: 1024px) {
            .mobile-menu {
                display: none !important;
            }
        }

        .mobile-menu .nav-link {
            font-size: 1.1rem;
            padding: 8px 16px;
            width: 100%;
            text-align: center;
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
        }

        .mobile-menu .nav-link:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .mobile-menu .nav-link.active {
            background: rgba(230, 188, 62, 0.08);
            color: var(--color-accent);
            font-weight: 600;
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 7px;
            padding: 11px 24px;
            background: linear-gradient(135deg, var(--color-primary) 0%, #b07722 100%);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: all var(--transition-normal);
            cursor: pointer;
            white-space: nowrap;
            letter-spacing: 0.02em;
            box-shadow: var(--shadow-md);
            position: relative;
            overflow: hidden;
        }

        .btn-primary::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
            transition: left 0.5s ease;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #dba54d 0%, #c98f2e 100%);
            box-shadow: var(--shadow-gold);
            transform: translateY(-2px);
            border-color: rgba(255, 255, 255, 0.25);
        }

        .btn-primary:hover::before {
            left: 100%;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

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

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 7px;
            padding: 10px 22px;
            background: transparent;
            color: var(--color-accent);
            font-weight: 600;
            font-size: 0.93rem;
            border-radius: var(--radius-md);
            border: 1.5px solid var(--color-accent);
            transition: all var(--transition-normal);
            cursor: pointer;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .btn-outline:hover {
            background: rgba(230, 188, 62, 0.1);
            border-color: var(--color-accent-glow);
            color: var(--color-accent-glow);
            box-shadow: 0 0 18px rgba(230, 188, 62, 0.2);
        }

        .btn-outline:active {
            background: rgba(230, 188, 62, 0.18);
        }

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

        /* Section spacing */
        .section {
            padding: 56px 0;
        }

        @media (min-width: 768px) {
            .section {
                padding: 72px 0;
            }
        }

        @media (min-width: 1024px) {
            .section {
                padding: 88px 0;
            }
        }

        .section-sm {
            padding: 36px 0;
        }

        @media (min-width: 768px) {
            .section-sm {
                padding: 48px 0;
            }
        }

        /* Card base */
        .card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-sm);
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(255, 255, 255, 0.12);
            transform: translateY(-3px);
        }

        /* VIP tier card */
        .vip-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 28px 22px;
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
        }

        .vip-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            border-radius: 4px 4px 0 0;
            transition: height var(--transition-slow);
        }

        .vip-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(255, 255, 255, 0.16);
        }

        .vip-card:hover::before {
            height: 6px;
        }

        .vip-card.bronze::before {
            background: linear-gradient(90deg, #b8734a, #d4946e);
        }
        .vip-card.silver::before {
            background: linear-gradient(90deg, #9ba4b5, #c0c8d4);
        }
        .vip-card.gold {
            border-color: rgba(201, 143, 46, 0.5);
            box-shadow: var(--shadow-gold);
            background: linear-gradient(180deg, #221d16 0%, #1f1a11 100%);
        }
        .vip-card.gold::before {
            background: linear-gradient(90deg, #c98f2e, #e6bc3e, #c98f2e);
            height: 5px;
        }
        .vip-card.gold:hover {
            box-shadow: 0 8px 36px rgba(201, 143, 46, 0.45);
            border-color: rgba(230, 188, 62, 0.6);
        }
        .vip-card.diamond::before {
            background: linear-gradient(90deg, #e8e0f0, #b8c8f8, #e0d8f8, #c0d0f0);
        }

        .vip-badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .vip-badge.bronze {
            background: rgba(184, 115, 74, 0.2);
            color: #d4946e;
        }
        .vip-badge.silver {
            background: rgba(155, 164, 181, 0.2);
            color: #c0c8d4;
        }
        .vip-badge.gold {
            background: rgba(201, 143, 46, 0.25);
            color: #efd06e;
        }
        .vip-badge.diamond {
            background: rgba(180, 190, 220, 0.2);
            color: #c8d4f8;
        }

        .vip-recommended {
            position: absolute;
            top: 16px;
            right: -30px;
            background: var(--color-accent);
            color: #1c1813;
            font-weight: 700;
            font-size: 0.75rem;
            padding: 4px 34px;
            transform: rotate(45deg);
            letter-spacing: 0.05em;
            z-index: 2;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
        }

        /* Benefit icon card */
        .benefit-card {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding: 28px 18px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            transition: all var(--transition-normal);
        }

        .benefit-card:hover {
            border-color: rgba(255, 255, 255, 0.15);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .benefit-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 14px;
            background: rgba(201, 143, 46, 0.15);
            color: var(--color-accent);
            transition: all var(--transition-normal);
        }

        .benefit-card:hover .benefit-icon {
            background: rgba(201, 143, 46, 0.25);
            box-shadow: 0 0 20px rgba(230, 188, 62, 0.3);
        }

        /* Stat card */
        .stat-card {
            text-align: center;
            padding: 24px 16px;
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            transition: all var(--transition-normal);
        }

        .stat-card:hover {
            border-color: rgba(255, 255, 255, 0.14);
            box-shadow: var(--shadow-md);
        }

        .stat-number {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--color-accent);
            font-family: 'Noto Serif SC', serif;
            letter-spacing: 0.02em;
            line-height: 1.1;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 10px;
            background: var(--color-bg-card);
            overflow: hidden;
            transition: all var(--transition-normal);
        }

        .faq-item:hover {
            border-color: rgba(255, 255, 255, 0.12);
        }

        .faq-question {
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            color: var(--color-text);
            transition: color var(--transition-fast);
            user-select: none;
        }

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

        .faq-question .faq-arrow {
            transition: transform var(--transition-normal);
            color: var(--color-text-muted);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 20px;
            color: var(--color-text-muted);
            line-height: 1.8;
            font-size: 0.93rem;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* Hero banner */
        .hero-vip {
            position: relative;
            min-height: 420px;
            display: flex;
            align-items: center;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            overflow: hidden;
        }

        .hero-vip::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(20, 17, 12, 0.7) 0%, rgba(20, 17, 12, 0.85) 60%, rgba(20, 17, 12, 0.95) 100%);
            z-index: 1;
        }

        .hero-vip .hero-content {
            position: relative;
            z-index: 2;
        }

        @media (min-width: 768px) {
            .hero-vip {
                min-height: 480px;
            }
        }

        @media (min-width: 1024px) {
            .hero-vip {
                min-height: 540px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--color-bg-mid);
            border-top: 1px solid var(--color-border);
        }

        .footer-divider {
            border: none;
            border-top: 1px solid var(--color-border);
            opacity: 0.6;
        }

        /* Responsive grid helpers */
        @media (max-width: 640px) {
            .vip-card {
                padding: 20px 16px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .hero-vip {
                min-height: 340px;
            }
        }

        /* Focus visible */
        *:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 2px;
        }

        /* Selection */
        ::selection {
            background: rgba(201, 143, 46, 0.35);
            color: #fff;
        }

        /* Scrollbar subtle */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--color-border);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #4a4035;
        }