/* roulang page: index */
:root {
            --color-primary: #00C9A7;
            --color-primary-dark: #00B098;
            --color-secondary: #6C63FF;
            --color-secondary-dark: #5A52D5;
            --color-accent: #FF6F61;
            --color-warning: #FFD93D;
            --color-bg: #F8F9FA;
            --color-bg-dark: #1A1A2E;
            --color-text: #2D2D2D;
            --color-text-light: #6B7280;
            --color-heading: #1A1A2E;
            --color-border: #E5E7EB;
            --radius-card: 24px;
            --radius-card-sm: 12px;
            --radius-btn: 12px;
            --radius-badge: 16px;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-card-hover: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-btn: 0 4px 14px rgba(108,99,255,0.3);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', -apple-system, 'Noto Sans SC', sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button, input {
            font-family: inherit;
            outline: none;
            border: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 16px;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 32px;
            }
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.04);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 30px rgba(0,0,0,0.08);
        }

        .nav-desktop {
            display: none;
            height: 72px;
            align-items: center;
            justify-content: space-between;
        }

        @media (min-width: 768px) {
            .nav-desktop {
                display: flex;
            }
        }

        .nav-logo {
            font-size: 1.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo i {
            -webkit-text-fill-color: var(--color-secondary);
            font-size: 1.6rem;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text);
            padding: 6px 0;
            position: relative;
            transition: var(--transition);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            transition: var(--transition);
            border-radius: 2px;
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-links a:hover {
            color: var(--color-secondary);
        }

        .nav-links a.active {
            color: var(--color-secondary);
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--color-secondary), #5A52D5);
            color: #fff !important;
            padding: 10px 24px !important;
            border-radius: var(--radius-btn);
            font-weight: 600;
            box-shadow: var(--shadow-btn);
            transition: var(--transition);
        }

        .nav-cta::after {
            display: none !important;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108,99,255,0.4);
            color: #fff !important;
        }

        /* 移动端底部Tab */
        .bottom-tab-nav {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: #fff;
            border-top: 1px solid var(--color-border);
            display: flex;
            justify-content: space-around;
            align-items: center;
            height: 64px;
            padding: 0 8px;
            box-shadow: 0 -2px 20px rgba(0,0,0,0.06);
        }

        @media (min-width: 768px) {
            .bottom-tab-nav {
                display: none;
            }
        }

        .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 0.7rem;
            color: var(--color-text-light);
            transition: var(--transition);
            padding: 4px 12px;
            border-radius: 8px;
            cursor: pointer;
            -webkit-tap-highlight-color: transparent;
        }

        .tab-item i {
            font-size: 1.3rem;
            transition: var(--transition);
        }

        .tab-item.active {
            color: var(--color-secondary);
        }

        .tab-item.active i {
            color: var(--color-secondary);
        }

        .tab-item:hover {
            color: var(--color-secondary);
        }

        /* Hero */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: 72px;
            overflow: hidden;
            background: linear-gradient(135deg, #1A1A2E 0%, #16213E 40%, #0F3460 70%, #1A1A2E 100%);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.25;
            mix-blend-mode: overlay;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(108,99,255,0.15) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 50%, rgba(0,201,167,0.12) 0%, transparent 60%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 60px 16px 40px;
        }

        @media (min-width: 768px) {
            .hero-content {
                padding: 80px 32px 60px;
            }
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.15);
            padding: 6px 16px;
            border-radius: 50px;
            color: #fff;
            font-size: 0.85rem;
            margin-bottom: 24px;
        }

        .hero-badge i {
            color: var(--color-warning);
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.15;
            letter-spacing: -0.5px;
            max-width: 720px;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--color-primary), var(--color-warning));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255,255,255,0.7);
            margin-top: 20px;
            max-width: 540px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 36px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--color-secondary), #5A52D5);
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1rem;
            box-shadow: 0 8px 28px rgba(108,99,255,0.35);
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(108,99,255,0.5);
        }

        .btn-primary .badge {
            background: rgba(255,255,255,0.2);
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 500;
            backdrop-filter: blur(4px);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255,255,255,0.3);
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-secondary:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }

        .stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255,255,255,0.8);
            font-size: 0.95rem;
        }

        .stat-item i {
            color: var(--color-primary);
            font-size: 1.1rem;
        }

        .stat-item strong {
            color: #fff;
            font-weight: 700;
        }

        @media (max-width: 640px) {
            .hero-title {
                font-size: 2rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 20px;
            }
        }

        /* 板块通用 */
        .section {
            padding: 80px 0;
        }

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

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-heading);
            letter-spacing: -0.3px;
        }

        .section-header p {
            color: var(--color-text-light);
            font-size: 1.05rem;
            margin-top: 12px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        @media (max-width: 640px) {
            .section-header h2 {
                font-size: 1.6rem;
            }
        }

        /* 爆款卡片 */
        .game-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        @media (min-width: 640px) {
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .game-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .game-card {
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .game-card-cover {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-bg);
        }

        .game-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .game-card:hover .game-card-cover img {
            transform: scale(1.05);
        }

        .game-card-rating {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(0,0,0,0.6);
            backdrop-filter: blur(8px);
            padding: 4px 12px;
            border-radius: 50px;
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .game-card-rating i {
            color: var(--color-warning);
        }

        .game-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .game-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-heading);
            margin-bottom: 6px;
        }

        .game-card-body p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.5;
            flex: 1;
        }

        .game-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--color-border);
        }

        .game-download-count {
            font-size: 0.8rem;
            color: var(--color-text-light);
        }

        .game-download-count i {
            color: var(--color-primary);
        }

        .btn-download {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            color: #fff;
            padding: 8px 20px;
            border-radius: var(--radius-btn);
            font-size: 0.85rem;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0,201,167,0.35);
        }

        .game-card .empty-state {
            padding: 40px 20px;
            text-align: center;
            color: var(--color-text-light);
        }

        /* 种草清单 */
        .种草-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 8px 0 20px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .种草-scroll::-webkit-scrollbar {
            display: none;
        }

        .种草-item {
            min-width: 280px;
            max-width: 300px;
            background: #fff;
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-card);
            scroll-snap-align: start;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .种草-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .种草-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .种草-avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .种草-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-heading);
        }

        .种草-info span {
            font-size: 0.8rem;
            color: var(--color-text-light);
        }

        .种草-text {
            font-size: 0.9rem;
            color: var(--color-text);
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .种草-img {
            border-radius: var(--radius-card-sm);
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--color-bg);
        }

        .种草-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* 口碑跑马灯 */
        .口碑-section {
            background: linear-gradient(135deg, #1A1A2E, #16213E);
            color: #fff;
        }

        .口碑-track {
            display: flex;
            gap: 16px;
            overflow: hidden;
            position: relative;
        }

        .口碑-marquee {
            display: flex;
            gap: 16px;
            animation: marquee 30s linear infinite;
        }

        @keyframes marquee {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        .口碑-card {
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.1);
            padding: 16px 24px;
            border-radius: var(--radius-card-sm);
            min-width: 280px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .口碑-card i {
            color: var(--color-warning);
            font-size: 1.2rem;
        }

        .口碑-card p {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.85);
        }

        .口碑-card strong {
            color: #fff;
            font-weight: 600;
        }

        /* 最新资讯（CMS区域） */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }

        @media (min-width: 640px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .news-card-img {
            aspect-ratio: 16 / 9;
            background: var(--color-bg);
            overflow: hidden;
        }

        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .news-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin-bottom: 8px;
        }

        .news-card-meta .tag {
            background: var(--color-bg);
            padding: 2px 10px;
            border-radius: 50px;
            font-size: 0.75rem;
            color: var(--color-secondary);
            font-weight: 500;
        }

        .news-card-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-heading);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-body p {
            font-size: 0.88rem;
            color: var(--color-text-light);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-body .read-more {
            margin-top: 12px;
            color: var(--color-secondary);
            font-weight: 600;
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-card-body .read-more:hover {
            color: var(--color-primary);
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--color-text-light);
            font-size: 1rem;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        /* CTA区域 */
        .cta-section {
            background: linear-gradient(135deg, var(--color-secondary), #1A1A2E, var(--color-primary));
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(255,255,255,0.08) 0%, transparent 60%),
                        radial-gradient(ellipse at 80% 50%, rgba(0,201,167,0.1) 0%, transparent 60%);
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 80px 16px;
        }

        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-content p {
            color: rgba(255,255,255,0.8);
            font-size: 1.05rem;
            max-width: 500px;
            margin: 0 auto 32px;
        }

        .cta-content .btn-primary {
            font-size: 1.1rem;
            padding: 16px 40px;
        }

        /* Footer */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255,255,255,0.7);
            padding: 60px 0 100px;
        }

        @media (min-width: 768px) {
            .site-footer {
                padding: 60px 0 40px;
            }
        }

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

        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }

        .footer-brand .nav-logo {
            font-size: 1.6rem;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            transition: var(--transition);
        }

        .footer-col ul a:hover {
            color: var(--color-primary);
        }

        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.7);
            font-size: 1.1rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--color-secondary);
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-bottom {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid rgba(255,255,255,0.08);
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        .footer-bottom a {
            color: rgba(255,255,255,0.5);
        }

        .footer-bottom a:hover {
            color: var(--color-primary);
        }

        /* FAQ 手风琴（备用） */
        .faq-item {
            background: #fff;
            border-radius: var(--radius-card-sm);
            margin-bottom: 12px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
            overflow: hidden;
        }

        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-heading);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            transition: var(--transition);
            user-select: none;
        }

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

        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--color-text-light);
        }

        .faq-question.open i {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
        }

        .faq-answer.open {
            padding: 0 24px 20px;
            max-height: 300px;
        }

        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        /* 通用工具 */
        .text-gradient {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .mb-0 { margin-bottom: 0; }
        .mt-0 { margin-top: 0; }

        /* 滚动条轻美化 */
        ::-webkit-scrollbar {
            width: 6px;
            height: 6px;
        }

        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }

        ::-webkit-scrollbar-thumb {
            background: #ccc;
            border-radius: 10px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #aaa;
        }

/* roulang page: article */
:root {
            --color-primary: #00C9A7;
            --color-primary-dark: #00B898;
            --color-secondary: #6C63FF;
            --color-secondary-dark: #5A52E0;
            --color-coral: #FF6F61;
            --color-lemon: #FFD93D;
            --color-darkblue: #1A1A2E;
            --color-lightbg: #F8F9FA;
            --color-text: #2D2D2D;
            --color-text-light: #6B7280;
            --color-border: #E5E7EB;
            --radius-card: 24px;
            --radius-sm: 12px;
            --radius-btn: 12px;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-card-hover: 0 12px 40px rgba(0,0,0,0.12);
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, 'Noto Sans SC', system-ui, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background: var(--color-lightbg);
            overflow-x: hidden;
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            outline: none;
            border: none;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 16px;
        }

        @media (min-width: 768px) {
            .container {
                padding: 0 32px;
            }
        }

        /* ===== Header & Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0,0,0,0.04);
            transition: var(--transition-base);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            height: 68px;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
        }

        .nav-logo i {
            font-size: 1.6rem;
            -webkit-text-fill-color: var(--color-primary);
            color: var(--color-primary);
            background: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-links li a {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 10px 18px;
            border-radius: var(--radius-btn);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text);
            transition: var(--transition-base);
            position: relative;
        }

        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            border-radius: 4px;
            transition: transform 0.3s ease;
        }

        .nav-links li a:hover::after,
        .nav-links li a.active::after {
            transform: translateX(-50%) scaleX(1);
        }

        .nav-links li a:hover {
            color: var(--color-secondary);
            background: rgba(108,99,255,0.06);
        }

        .nav-links li a.active {
            color: var(--color-secondary);
            font-weight: 600;
        }

        .nav-links li a.nav-cta {
            background: linear-gradient(135deg, var(--color-secondary), #5A52E0);
            color: #fff;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            box-shadow: 0 4px 14px rgba(108,99,255,0.3);
            font-weight: 600;
        }

        .nav-links li a.nav-cta::after {
            display: none;
        }

        .nav-links li a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108,99,255,0.4);
            background: linear-gradient(135deg, #5A52E0, #4A42D0);
            color: #fff;
        }

        /* Mobile bottom tab */
        .mobile-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            z-index: 999;
            background: rgba(255,255,255,0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid rgba(0,0,0,0.06);
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            box-shadow: 0 -4px 20px rgba(0,0,0,0.06);
        }

        .mobile-tab-nav .tab-items {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 500px;
            margin: 0 auto;
        }

        .mobile-tab-nav .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            font-size: 0.7rem;
            color: var(--color-text-light);
            transition: var(--transition-base);
            border-radius: 12px;
            min-width: 60px;
        }

        .mobile-tab-nav .tab-item i {
            font-size: 1.2rem;
            transition: var(--transition-base);
        }

        .mobile-tab-nav .tab-item.active {
            color: var(--color-secondary);
            font-weight: 600;
        }

        .mobile-tab-nav .tab-item.active i {
            color: var(--color-secondary);
        }

        .mobile-tab-nav .tab-item:hover {
            color: var(--color-secondary);
        }

        @media (max-width: 768px) {
            .nav-desktop .nav-links {
                display: none;
            }
            .mobile-tab-nav {
                display: block;
            }
            .site-header .container {
                height: 60px;
            }
            body {
                padding-bottom: 70px;
            }
        }

        @media (min-width: 769px) {
            .mobile-tab-nav {
                display: none !important;
            }
        }

        /* ===== Article Page ===== */
        .article-page {
            padding-top: 100px;
            padding-bottom: 60px;
        }

        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--color-text-light);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

        .article-breadcrumb a {
            color: var(--color-text-light);
            transition: var(--transition-base);
        }

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

        .article-breadcrumb .separator {
            color: #ccc;
            font-size: 0.75rem;
        }

        .article-breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        .article-header {
            margin-bottom: 32px;
        }

        .article-header h1 {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-darkblue);
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 0.9rem;
            color: var(--color-text-light);
            flex-wrap: wrap;
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta .meta-item i {
            font-size: 0.85rem;
            color: var(--color-primary);
        }

        .article-meta .category-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            background: linear-gradient(135deg, rgba(0,201,167,0.12), rgba(108,99,255,0.12));
            color: var(--color-secondary);
        }

        .article-featured-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            margin-bottom: 32px;
            box-shadow: var(--shadow-card);
            background: #e8ecf0;
            aspect-ratio: 16/9;
            position: relative;
        }

        .article-featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .article-content {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 40px 48px;
            box-shadow: var(--shadow-card);
            margin-bottom: 40px;
        }

        .article-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-darkblue);
            margin: 32px 0 16px;
            line-height: 1.35;
        }

        .article-content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--color-darkblue);
            margin: 24px 0 12px;
            line-height: 1.4;
        }

        .article-content p {
            margin-bottom: 18px;
            color: var(--color-text);
            line-height: 1.8;
            font-size: 1.05rem;
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 20px 24px;
            line-height: 1.8;
        }

        .article-content li {
            margin-bottom: 8px;
            font-size: 1.02rem;
        }

        .article-content blockquote {
            border-left: 4px solid var(--color-primary);
            background: rgba(0,201,167,0.06);
            padding: 16px 24px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: #555;
        }

        .article-content img {
            border-radius: var(--radius-sm);
            margin: 24px auto;
            box-shadow: 0 4px 12px rgba(0,0,0,0.08);
        }

        .article-content a {
            color: var(--color-secondary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: var(--color-primary-dark);
        }

        .article-footer-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding: 20px 0 0;
            border-top: 1px solid var(--color-border);
            margin-top: 32px;
        }

        .article-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .article-tags .tag {
            display: inline-flex;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 0.82rem;
            background: rgba(108,99,255,0.08);
            color: var(--color-secondary);
            font-weight: 500;
            transition: var(--transition-base);
        }

        .article-tags .tag:hover {
            background: rgba(108,99,255,0.18);
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .article-share span {
            font-size: 0.85rem;
            color: var(--color-text-light);
        }

        .article-share a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-lightbg);
            color: var(--color-text-light);
            transition: var(--transition-base);
            font-size: 0.95rem;
        }

        .article-share a:hover {
            background: var(--color-secondary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Not Found ===== */
        .article-not-found {
            text-align: center;
            padding: 80px 20px;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
        }

        .article-not-found .not-found-icon {
            font-size: 4rem;
            color: #ddd;
            margin-bottom: 24px;
        }

        .article-not-found h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-darkblue);
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--color-text-light);
            margin-bottom: 24px;
        }

        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: var(--transition-base);
            box-shadow: 0 4px 14px rgba(0,201,167,0.3);
        }

        .article-not-found .btn-back:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0,201,167,0.4);
        }

        /* ===== Related Section ===== */
        .related-section {
            margin-top: 48px;
        }

        .related-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-darkblue);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .related-section h2 i {
            color: var(--color-primary);
            font-size: 1.3rem;
        }

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

        .related-card {
            background: #fff;
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .related-card .card-img {
            aspect-ratio: 16/9;
            background: #e8ecf0;
            overflow: hidden;
        }

        .related-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .related-card .card-body {
            padding: 14px 16px 16px;
        }

        .related-card .card-body h3 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-darkblue);
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card .card-body .card-date {
            font-size: 0.8rem;
            color: var(--color-text-light);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== CTA Section ===== */
        .article-cta {
            margin-top: 48px;
            background: linear-gradient(135deg, var(--color-darkblue), #2D2B55);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .article-cta::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0,201,167,0.15), transparent 70%);
            border-radius: 50%;
        }

        .article-cta::after {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(108,99,255,0.15), transparent 70%);
            border-radius: 50%;
        }

        .article-cta h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .article-cta p {
            color: rgba(255,255,255,0.8);
            margin-bottom: 24px;
            font-size: 1.05rem;
            position: relative;
            z-index: 1;
        }

        .article-cta .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .article-cta .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: #fff;
            color: var(--color-darkblue);
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition-base);
            box-shadow: 0 4px 16px rgba(255,255,255,0.2);
        }

        .article-cta .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255,255,255,0.3);
        }

        .article-cta .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.3);
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 1.05rem;
            transition: var(--transition-base);
        }

        .article-cta .btn-secondary:hover {
            border-color: #fff;
            background: rgba(255,255,255,0.08);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-darkblue);
            color: rgba(255,255,255,0.85);
            padding: 60px 0 0;
            margin-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .nav-logo {
            font-size: 1.4rem;
            margin-bottom: 16px;
            display: inline-flex;
        }

        .footer-brand .nav-logo i {
            -webkit-text-fill-color: var(--color-primary);
            color: var(--color-primary);
        }

        .footer-brand p {
            font-size: 0.92rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.65);
            margin-bottom: 20px;
            max-width: 360px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            font-size: 1.15rem;
            transition: var(--transition-base);
        }

        .footer-social a:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-3px);
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            border-radius: 4px;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
            font-size: 0.92rem;
            color: rgba(255,255,255,0.65);
        }

        .footer-col ul li a {
            color: rgba(255,255,255,0.65);
            transition: var(--transition-base);
        }

        .footer-col ul li a:hover {
            color: var(--color-primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding: 20px 0;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.45);
        }

        .footer-bottom a {
            color: rgba(255,255,255,0.55);
        }

        .footer-bottom a:hover {
            color: var(--color-primary);
        }

        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .article-page {
                padding-top: 80px;
                padding-bottom: 40px;
            }
            .article-header h1 {
                font-size: 1.5rem;
            }
            .article-content {
                padding: 24px 20px;
            }
            .article-content p {
                font-size: 0.98rem;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
            .article-content h3 {
                font-size: 1.1rem;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-cta {
                padding: 36px 24px;
            }
            .article-cta h3 {
                font-size: 1.3rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.82rem;
            }
            .article-footer-meta {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 480px) {
            .article-header h1 {
                font-size: 1.3rem;
            }
            .article-content {
                padding: 16px 14px;
                border-radius: var(--radius-sm);
            }
            .article-breadcrumb {
                font-size: 0.8rem;
            }
            .article-cta .btn-primary,
            .article-cta .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== Skeleton / Loading ===== */
        .skeleton {
            background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
            background-size: 200% 100%;
            animation: shimmer 1.5s infinite;
            border-radius: 8px;
        }

        @keyframes shimmer {
            0% { background-position: -200% 0; }
            100% { background-position: 200% 0; }
        }

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

/* roulang page: category1 */
:root {
            --color-primary: #00C9A7;
            --color-secondary: #6C63FF;
            --color-accent: #FF6F61;
            --color-gold: #FFD93D;
            --color-darkbg: #1A1A2E;
            --color-softbg: #F8F9FA;
            --color-bodytext: #2D2D2D;
            --color-headtext: #1A1A2E;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.06);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.12);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Inter', -apple-system, 'Noto Sans SC', sans-serif;
            background: var(--color-softbg);
            color: var(--color-bodytext);
            line-height: 1.8;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        @media (min-width: 768px) {
            .container { padding-left: 32px; padding-right: 32px; }
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0,0,0,0.04);
            box-shadow: 0 2px 20px rgba(0,0,0,0.04);
            transition: var(--transition);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.3px;
        }

        .nav-logo i {
            -webkit-text-fill-color: initial;
            color: var(--color-primary);
            font-size: 1.5rem;
        }

        .nav-desktop { display: none; }
        .nav-desktop ul { display: flex; align-items: center; gap: 6px; list-style: none; }
        .nav-desktop ul li a {
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-bodytext);
            transition: var(--transition);
            position: relative;
        }

        .nav-desktop ul li a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 3px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            border-radius: 4px;
            transition: transform 0.3s ease;
        }

        .nav-desktop ul li a:hover::after,
        .nav-desktop ul li a.active::after { transform: translateX(-50%) scaleX(1); }

        .nav-desktop ul li a:hover { color: var(--color-secondary); }
        .nav-desktop ul li a.active { color: var(--color-secondary); font-weight: 600; }

        .nav-desktop ul li a.nav-cta {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff !important;
            padding: 10px 24px;
            border-radius: var(--radius-md);
            box-shadow: 0 4px 16px rgba(108,99,255,0.3);
            margin-left: 12px;
            font-weight: 600;
        }

        .nav-desktop ul li a.nav-cta::after { display: none; }
        .nav-desktop ul li a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(108,99,255,0.4);
        }

        @media (min-width: 768px) {
            .nav-desktop { display: flex; align-items: center; }
            .mobile-tab-bar { display: none !important; }
        }

        /* ===== Mobile Tab Bar ===== */
        .mobile-tab-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: #fff;
            border-top: 1px solid rgba(0,0,0,0.06);
            display: flex;
            align-items: center;
            justify-content: space-around;
            padding: 6px 0 10px;
            box-shadow: 0 -4px 20px rgba(0,0,0,0.06);
        }

        .mobile-tab-bar .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            font-size: 0.7rem;
            color: #999;
            padding: 4px 12px;
            border-radius: var(--radius-md);
            transition: var(--transition);
            font-weight: 500;
        }

        .mobile-tab-bar .tab-item i { font-size: 1.25rem; margin-bottom: 1px; }
        .mobile-tab-bar .tab-item.active { color: var(--color-secondary); }
        .mobile-tab-bar .tab-item.active i { color: var(--color-secondary); }
        .mobile-tab-bar .tab-item:hover { color: var(--color-secondary); }

        .mobile-tab-bar .tab-item.tab-cta {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff !important;
            padding: 6px 18px;
            border-radius: 30px;
            box-shadow: 0 4px 16px rgba(108,99,255,0.3);
        }

        .mobile-tab-bar .tab-item.tab-cta i { color: #fff; }

        @media (min-width: 768px) {
            .mobile-tab-bar { display: none !important; }
            body { padding-bottom: 0 !important; }
        }

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

        /* ===== Hero ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(160deg, #1A1A2E 0%, #16213E 40%, #0F3460 70%, #1A1A2E 100%);
            overflow: hidden;
            margin-top: 0;
            padding-top: 68px;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.18;
            z-index: 0;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--color-softbg), transparent);
            z-index: 1;
        }

        .hero-section .container {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding-top: 40px;
            padding-bottom: 60px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255,255,255,0.15);
            padding: 6px 20px;
            border-radius: 30px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.9);
            margin-bottom: 28px;
            letter-spacing: 0.5px;
        }

        .hero-badge i { color: var(--color-gold); font-size: 0.9rem; }

        .hero-section h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            max-width: 720px;
            margin-bottom: 18px;
            text-shadow: 0 4px 30px rgba(0,0,0,0.3);
        }

        .hero-section h1 span {
            background: linear-gradient(135deg, var(--color-primary), var(--color-gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-sub {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.75);
            max-width: 560px;
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
            margin-bottom: 40px;
        }

        .hero-actions .btn-primary {
            padding: 14px 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            font-size: 1.05rem;
            font-weight: 600;
            border-radius: var(--radius-md);
            box-shadow: 0 6px 24px rgba(108,99,255,0.35);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .hero-actions .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(108,99,255,0.45);
        }

        .hero-actions .btn-primary i { font-size: 1rem; }

        .hero-actions .btn-secondary {
            padding: 14px 30px;
            background: rgba(255,255,255,0.10);
            border: 1.5px solid rgba(255,255,255,0.25);
            color: #fff;
            font-size: 1.05rem;
            font-weight: 500;
            border-radius: var(--radius-md);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .hero-actions .btn-secondary:hover {
            background: rgba(255,255,255,0.18);
            border-color: rgba(255,255,255,0.4);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px 48px;
            justify-content: center;
            padding: 18px 32px;
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255,255,255,0.08);
        }

        .hero-stats .stat-item {
            text-align: center;
        }

        .hero-stats .stat-item .num {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .hero-stats .stat-item .num i { color: var(--color-gold); font-size: 1rem; margin-right: 4px; }

        .hero-stats .stat-item .label {
            font-size: 0.8rem;
            color: rgba(255,255,255,0.6);
            margin-top: 2px;
        }

        @media (max-width: 640px) {
            .hero-section h1 { font-size: 1.9rem; }
            .hero-sub { font-size: 0.95rem; }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary { padding: 12px 24px; font-size: 0.95rem; }
            .hero-stats { gap: 16px 28px; padding: 14px 20px; }
            .hero-stats .stat-item .num { font-size: 1.3rem; }
        }

        /* ===== Section Common ===== */
        .section-block {
            padding: 80px 0;
        }

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

        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-headtext);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-title h2 i {
            color: var(--color-primary);
            margin-right: 8px;
        }

        .section-title p {
            font-size: 1rem;
            color: #666;
            max-width: 600px;
            margin: 0 auto;
        }

        @media (max-width: 640px) {
            .section-title h2 { font-size: 1.6rem; }
        }

        /* ===== Hot Game Cards ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 24px;
        }

        @media (min-width: 640px) {
            .game-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (min-width: 1024px) {
            .game-grid { grid-template-columns: repeat(3, 1fr); }
        }

        .game-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .game-card .card-img {
            aspect-ratio: 16 / 9;
            background: #e8ecf1;
            overflow: hidden;
            position: relative;
        }

        .game-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .game-card .card-img .badge-top {
            position: absolute;
            top: 12px;
            left: 12px;
            background: linear-gradient(135deg, var(--color-accent), #e85a4f);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 14px;
            border-radius: 20px;
            box-shadow: 0 4px 12px rgba(255,111,97,0.3);
        }

        .game-card .card-img .badge-hot {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(0,0,0,0.55);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 0.75rem;
            padding: 3px 12px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .game-card .card-img .badge-hot i { color: var(--color-gold); font-size: 0.7rem; }

        .game-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .game-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-headtext);
            margin-bottom: 6px;
        }

        .game-card .card-body .desc {
            font-size: 0.9rem;
            color: #777;
            line-height: 1.5;
            margin-bottom: 12px;
            flex: 1;
        }

        .game-card .card-body .meta-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }

        .game-card .card-body .meta-row .stars {
            color: var(--color-gold);
            font-size: 0.85rem;
            letter-spacing: 1px;
        }

        .game-card .card-body .meta-row .downloads {
            font-size: 0.8rem;
            color: #999;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .game-card .card-body .btn-download {
            width: 100%;
            padding: 10px 0;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border-radius: var(--radius-md);
            transition: var(--transition);
            text-align: center;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .game-card .card-body .btn-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(108,99,255,0.35);
        }

        /* ===== Features ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 28px;
        }

        @media (min-width: 640px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (min-width: 1024px) {
            .features-grid { grid-template-columns: repeat(4, 1fr); }
        }

        .feature-item {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            border: 1px solid rgba(0,0,0,0.03);
        }

        .feature-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .feature-item .icon-wrap {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(0,201,167,0.12), rgba(108,99,255,0.12));
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: var(--color-secondary);
        }

        .feature-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-headtext);
            margin-bottom: 8px;
        }

        .feature-item p {
            font-size: 0.9rem;
            color: #777;
            line-height: 1.6;
        }

        /* ===== Reviews / Testimonials ===== */
        .review-marquee {
            overflow: hidden;
            position: relative;
            padding: 16px 0;
        }

        .review-track {
            display: flex;
            gap: 20px;
            animation: scrollReviews 32s linear infinite;
            width: max-content;
        }

        @keyframes scrollReviews {
            0% { transform: translateX(0); }
            100% { transform: translateX(-50%); }
        }

        .review-card-mini {
            flex-shrink: 0;
            width: 280px;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 16px 20px;
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
            border: 1px solid rgba(0,0,0,0.04);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .review-card-mini .review-user {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .review-card-mini .review-user .avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .review-card-mini .review-user .name { font-weight: 600; font-size: 0.85rem; color: var(--color-headtext); }
        .review-card-mini .review-text { font-size: 0.9rem; color: #666; line-height: 1.5; }
        .review-card-mini .review-stars { color: var(--color-gold); font-size: 0.8rem; }

        .review-marquee:hover .review-track { animation-play-state: paused; }

        /* ===== Process Steps ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        @media (min-width: 640px) {
            .process-steps { grid-template-columns: repeat(2, 1fr); }
        }

        @media (min-width: 1024px) {
            .process-steps { grid-template-columns: repeat(4, 1fr); }
        }

        .step-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition);
            position: relative;
            border: 1px solid rgba(0,0,0,0.03);
            text-align: center;
        }

        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .step-card .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            font-weight: 700;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 16px rgba(108,99,255,0.25);
        }

        .step-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-headtext);
            margin-bottom: 6px;
        }

        .step-card p {
            font-size: 0.9rem;
            color: #777;
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
            border: 1px solid rgba(0,0,0,0.04);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover { border-color: rgba(0,201,167,0.2); }

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-headtext);
            background: transparent;
            text-align: left;
            transition: var(--transition);
        }

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

        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--color-primary);
            transition: transform 0.3s ease;
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-item.open .faq-question .faq-icon { transform: rotate(45deg); }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 22px;
            color: #666;
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
            border-radius: var(--radius-xl);
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }

        .cta-banner > * { position: relative; z-index: 1; }

        .cta-banner h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .cta-banner p {
            font-size: 1.05rem;
            color: rgba(255,255,255,0.7);
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .cta-banner .btn-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 40px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            border-radius: var(--radius-md);
            box-shadow: 0 8px 30px rgba(108,99,255,0.35);
            transition: var(--transition);
        }

        .cta-banner .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 14px 40px rgba(108,99,255,0.45);
        }

        @media (max-width: 640px) {
            .cta-banner { padding: 40px 20px; }
            .cta-banner h2 { font-size: 1.5rem; }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-darkbg);
            color: rgba(255,255,255,0.75);
            padding: 64px 0 32px;
            margin-top: 16px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 36px;
            margin-bottom: 40px;
        }

        @media (min-width: 640px) {
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (min-width: 1024px) {
            .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
        }

        .footer-brand .nav-logo {
            font-size: 1.4rem;
            margin-bottom: 14px;
            display: inline-flex;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 360px;
            margin-bottom: 18px;
        }

        .footer-social { display: flex; gap: 14px; }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255,255,255,0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: #fff;
            transform: translateY(-2px);
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
        .footer-col ul li { font-size: 0.9rem; color: rgba(255,255,255,0.55); }
        .footer-col ul li a { color: rgba(255,255,255,0.55); transition: var(--transition); }
        .footer-col ul li a:hover { color: var(--color-primary); }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        .footer-bottom a { color: rgba(255,255,255,0.5); }
        .footer-bottom a:hover { color: var(--color-primary); }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar { width: 6px; }
        ::-webkit-scrollbar-track { background: var(--color-softbg); }
        ::-webkit-scrollbar-thumb { background: #ccc; border-radius: 8px; }
        ::-webkit-scrollbar-thumb:hover { background: #aaa; }

        /* ===== Animation ===== */
        .fade-up {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .fade-up.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* ===== Empty State Placeholder ===== */
        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: #aaa;
            font-size: 0.95rem;
        }

        .empty-state i { font-size: 2.4rem; margin-bottom: 12px; color: #ddd; }

        /* ===== Responsive tweaks ===== */
        @media (max-width: 480px) {
            .hero-section h1 { font-size: 1.6rem; }
            .section-title h2 { font-size: 1.4rem; }
            .game-card .card-body { padding: 14px 16px 16px; }
            .game-card .card-body h3 { font-size: 1rem; }
            .feature-item { padding: 24px 16px 20px; }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: #999;
            padding: 16px 0;
            flex-wrap: wrap;
        }

        .breadcrumb a { color: #999; }
        .breadcrumb a:hover { color: var(--color-secondary); }
        .breadcrumb .sep { color: #ccc; }
        .breadcrumb .current { color: var(--color-headtext); font-weight: 500; }

        /* ===== Tab active sync ===== */
        .page-category1 .nav-hot { color: var(--color-secondary); font-weight: 600; }
        .page-category1 .nav-hot::after { transform: translateX(-50%) scaleX(1) !important; }
        .page-category1 .tab-hot { color: var(--color-secondary); }
        .page-category1 .tab-hot i { color: var(--color-secondary); }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --color-primary: #00C9A7;
            --color-primary-dark: #00A88E;
            --color-secondary: #6C63FF;
            --color-secondary-dark: #5A52E0;
            --color-accent: #FF6F61;
            --color-warning: #FFD93D;
            --color-bg: #F8F9FA;
            --color-bg-dark: #1A1A2E;
            --color-text: #2D2D2D;
            --color-title: #1A1A2E;
            --color-muted: #6B7280;
            --color-border: #E5E7EB;
            --color-white: #FFFFFF;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, 'Noto Sans SC', system-ui, sans-serif;
            --container-max: 1280px;
            --header-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-bottom: 68px;
        }

        @media (min-width: 768px) {
            body {
                padding-bottom: 0;
            }
        }

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

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

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Container ===== */
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding-left: 16px;
            padding-right: 16px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        /* ===== Header & Navigation (Desktop) ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(229, 231, 235, 0.5);
            transition: var(--transition);
        }

        .site-header:hover {
            background: rgba(255, 255, 255, 0.98);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .nav-logo i {
            font-size: 1.6rem;
            -webkit-text-fill-color: var(--color-primary);
            color: var(--color-primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links li a {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text);
            transition: var(--transition);
            position: relative;
        }

        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .nav-links li a:hover {
            color: var(--color-secondary);
        }

        .nav-links li a:hover::after {
            transform: scaleX(1);
        }

        .nav-links li a.active {
            color: var(--color-secondary);
        }

        .nav-links li a.active::after {
            transform: scaleX(1);
        }

        .nav-links li a.nav-cta {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: var(--color-white);
            padding: 10px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }

        .nav-links li a.nav-cta::after {
            display: none;
        }

        .nav-links li a.nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-secondary-dark));
            color: var(--color-white);
        }

        .nav-links li a.nav-cta i {
            font-size: 0.85rem;
        }

        /* ===== Mobile Bottom Tab ===== */
        .mobile-tab-bar {
            display: flex;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1100;
            background: var(--color-white);
            border-top: 1px solid var(--color-border);
            padding: 6px 0 env(safe-area-inset-bottom, 6px) 0;
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
            justify-content: space-around;
            align-items: center;
        }

        .mobile-tab-bar a {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 2px;
            padding: 6px 12px;
            font-size: 0.7rem;
            font-weight: 500;
            color: var(--color-muted);
            transition: var(--transition);
            border-radius: var(--radius-sm);
            min-width: 56px;
        }

        .mobile-tab-bar a i {
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .mobile-tab-bar a span {
            font-size: 0.65rem;
            line-height: 1.2;
        }

        .mobile-tab-bar a.active {
            color: var(--color-secondary);
        }

        .mobile-tab-bar a.active i {
            color: var(--color-secondary);
        }

        .mobile-tab-bar a:hover {
            color: var(--color-secondary);
        }

        .mobile-tab-bar a.nav-cta-mobile {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: var(--color-white) !important;
            border-radius: var(--radius-md);
            padding: 6px 16px;
            min-width: auto;
        }

        .mobile-tab-bar a.nav-cta-mobile i {
            color: var(--color-white);
        }

        @media (min-width: 768px) {
            .mobile-tab-bar {
                display: none;
            }
        }

        /* ===== Hero Section ===== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 120px 0 80px;
            background: linear-gradient(135deg, var(--color-bg-dark) 0%, #16213e 50%, #0f3460 100%);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--color-bg), transparent);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 820px;
            padding: 0 20px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(108, 99, 255, 0.2);
            border: 1px solid rgba(108, 99, 255, 0.3);
            padding: 6px 20px;
            border-radius: 50px;
            color: #c4b5fd;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 24px;
            backdrop-filter: blur(4px);
        }

        .hero-badge i {
            color: var(--color-warning);
        }

        .hero-content h1 {
            font-size: clamp(2.2rem, 6vw, 3.8rem);
            font-weight: 800;
            color: var(--color-white);
            line-height: 1.15;
            margin-bottom: 20px;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
        }

        .hero-content h1 span {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content p {
            font-size: clamp(1rem, 2vw, 1.25rem);
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.7;
            max-width: 640px;
            margin: 0 auto 32px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            margin-bottom: 40px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            color: var(--color-white);
            font-weight: 600;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
            box-shadow: 0 8px 30px rgba(108, 99, 255, 0.3);
            transition: var(--transition);
            border: none;
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 40px rgba(108, 99, 255, 0.4);
            background: linear-gradient(135deg, var(--color-primary-dark), var(--color-secondary-dark));
        }

        .btn-primary i {
            font-size: 0.9rem;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 36px;
            background: transparent;
            color: var(--color-white);
            font-weight: 600;
            font-size: 1.05rem;
            border-radius: var(--radius-md);
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition);
        }

        .btn-secondary:hover {
            border-color: var(--color-white);
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px 40px;
            padding-top: 20px;
        }

        .hero-stat {
            text-align: center;
        }

        .hero-stat .number {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-white);
            display: block;
        }

        .hero-stat .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== Section Common ===== */
        .section {
            padding: 80px 0;
        }

        @media (max-width: 767px) {
            .section {
                padding: 56px 0;
            }
        }

        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-title h2 {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            font-weight: 700;
            margin-bottom: 12px;
        }

        .section-title p {
            font-size: 1.05rem;
            color: var(--color-muted);
            max-width: 600px;
            margin: 0 auto;
        }

        .section-title .highlight {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ===== Features / 卖点 ===== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 28px;
        }

        @media (min-width: 640px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .feature-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--color-border);
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .feature-card .icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--color-white);
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
        }

        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.95rem;
            color: var(--color-muted);
            line-height: 1.7;
        }

        /* ===== Scenarios / 适用场景 ===== */
        .scenarios-section {
            background: var(--color-white);
        }

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

        @media (min-width: 640px) {
            .scenarios-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .scenarios-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .scenario-card {
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .scenario-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .scenario-card .emoji {
            font-size: 2.4rem;
            margin-bottom: 16px;
            display: block;
        }

        .scenario-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .scenario-card p {
            font-size: 0.9rem;
            color: var(--color-muted);
        }

        /* ===== 种草清单 / 瀑布流 ===== */
        .waterfall-section {
            background: var(--color-bg);
        }

        .waterfall-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 24px;
            max-width: 960px;
            margin: 0 auto;
        }

        @media (min-width: 640px) {
            .waterfall-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .waterfall-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .waterfall-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--color-border);
        }

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

        .waterfall-card .card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            display: block;
        }

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

        .waterfall-card .card-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .waterfall-card .card-body .desc {
            font-size: 0.88rem;
            color: var(--color-muted);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .waterfall-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }

        .waterfall-card .rating {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 0.85rem;
            color: var(--color-warning);
            font-weight: 600;
        }

        .waterfall-card .rating span {
            color: var(--color-text);
            margin-left: 2px;
        }

        .waterfall-card .download-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(0, 201, 167, 0.1);
            color: var(--color-primary-dark);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 500;
        }

        .waterfall-card .download-badge i {
            font-size: 0.7rem;
        }

        /* ===== Steps / 流程 ===== */
        .steps-section {
            background: var(--color-bg-dark);
            color: var(--color-white);
        }

        .steps-section .section-title h2 {
            color: var(--color-white);
        }

        .steps-section .section-title p {
            color: rgba(255, 255, 255, 0.7);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 32px;
            max-width: 960px;
            margin: 0 auto;
            position: relative;
        }

        @media (min-width: 640px) {
            .steps-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .steps-grid::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
            opacity: 0.3;
            display: none;
        }

        @media (min-width: 640px) {
            .steps-grid::before {
                display: block;
            }
        }

        .step-item {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .step-number {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-white);
            margin: 0 auto 20px;
            box-shadow: 0 8px 30px rgba(108, 99, 255, 0.3);
        }

        .step-item h4 {
            font-size: 1.15rem;
            color: var(--color-white);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
        }

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

        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-title);
            cursor: pointer;
            background: var(--color-bg);
            transition: var(--transition);
            width: 100%;
            text-align: left;
            gap: 12px;
        }

        .faq-question:hover {
            background: rgba(0, 201, 167, 0.05);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            font-size: 0.85rem;
            color: var(--color-primary);
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            background: var(--color-white);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 18px 24px 24px;
        }

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--color-muted);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-bg-dark) 0%, #16213e 50%, #0f3460 100%);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }

        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .cta-content h2 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            color: var(--color-white);
            margin-bottom: 16px;
        }

        .cta-content p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .cta-content .btn-primary {
            font-size: 1.1rem;
            padding: 16px 44px;
        }

        .cta-content .btn-primary i {
            font-size: 1rem;
        }

        .cta-gift {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 217, 61, 0.15);
            border: 1px solid rgba(255, 217, 61, 0.25);
            padding: 6px 18px;
            border-radius: 50px;
            color: var(--color-warning);
            font-size: 0.85rem;
            font-weight: 500;
            margin-top: 24px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }

        @media (min-width: 640px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr 1fr;
            }
        }

        .footer-brand .nav-logo {
            font-size: 1.3rem;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
            max-width: 360px;
        }

        .footer-social {
            display: flex;
            gap: 12px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 1.1rem;
            transition: var(--transition);
        }

        .footer-social a:hover {
            background: var(--color-primary);
            color: var(--color-white);
            transform: translateY(-3px);
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
        }

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

        .footer-col ul li a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--color-primary);
            padding-left: 4px;
        }

        .footer-col ul li i {
            color: var(--color-primary);
            width: 18px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 28px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a:hover {
            color: var(--color-primary);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.88rem;
            color: var(--color-muted);
            padding: 16px 0;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .sep {
            color: var(--color-border);
            font-size: 0.75rem;
        }

        .breadcrumb .current {
            color: var(--color-secondary);
            font-weight: 500;
        }

        /* ===== Responsive Fine-tune ===== */
        @media (max-width: 767px) {
            .nav-desktop .nav-links {
                display: none;
            }

            .site-header {
                height: 60px;
            }

            .nav-logo {
                font-size: 1.15rem;
            }

            .nav-logo i {
                font-size: 1.3rem;
            }

            .hero-section {
                min-height: 90vh;
                padding: 80px 0 60px;
            }

            .hero-content h1 {
                font-size: clamp(1.8rem, 8vw, 2.6rem);
            }

            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }

            .btn-primary,
            .btn-secondary {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }

            .hero-stats {
                gap: 16px 24px;
            }

            .hero-stat .number {
                font-size: 1.3rem;
            }

            .section-title h2 {
                font-size: 1.6rem;
            }

            .feature-card {
                padding: 28px 20px;
            }

            .footer-grid {
                gap: 24px;
            }

            .footer-brand p {
                max-width: 100%;
            }
        }

        @media (min-width: 768px) and (max-width: 1023px) {
            .nav-links li a {
                padding: 8px 14px;
                font-size: 0.88rem;
            }

            .hero-content h1 {
                font-size: 2.8rem;
            }

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

        @media (min-width: 768px) {
            .site-header {
                display: block;
            }

            .mobile-tab-bar {
                display: none;
            }

            body {
                padding-bottom: 0;
            }
        }

        /* ===== Utility ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .bg-gradient-primary {
            background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
        }

        /* ===== Empty State ===== */
        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: var(--color-muted);
        }

        .empty-state i {
            font-size: 3rem;
            color: var(--color-border);
            margin-bottom: 16px;
        }

        .empty-state p {
            font-size: 1.05rem;
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }

        ::-webkit-scrollbar-thumb {
            background: #d1d5db;
            border-radius: 8px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #9ca3af;
        }

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