/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --color-primary: #0f172a;
            --color-primary-light: #1e293b;
            --color-primary-dark: #020617;
            --color-accent: #f59e0b;
            --color-accent-light: #fbbf24;
            --color-accent-dark: #d97706;
            --color-bg: #f8fafc;
            --color-white: #ffffff;
            --color-text: #1e293b;
            --color-text-muted: #64748b;
            --color-border: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 32px;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.07);
            --shadow-lg: 0 16px 40px rgba(0,0,0,0.10);
            --space-section: 110px;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        /* ========== 基础 Reset ========== */
        *, *::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);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }
        input, textarea, select {
            font-family: inherit;
            font-size: 1rem;
        }

        /* ========== 容器 ========== */
        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ========== 导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow .3s ease;
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .nav-logo {
            font-size: 1.25rem;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: var(--color-primary);
            position: relative;
            padding-left: 14px;
        }
        .nav-logo::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 6px;
            height: 24px;
            background: var(--color-accent);
            border-radius: 3px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 40px;
        }
        .nav-link {
            position: relative;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-muted);
            padding: 8px 2px;
            transition: color .25s ease;
            letter-spacing: 0.3px;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .3s ease;
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link:hover::after,
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.active::before {
            content: '';
            position: absolute;
            top: -4px;
            left: 50%;
            transform: translateX(-50%);
            width: 5px;
            height: 5px;
            background: var(--color-accent);
            border-radius: 50%;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            z-index: 110;
        }
        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all .3s ease;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* 移动端导航 */
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 0;
                right: -100%;
                width: 280px;
                height: 100vh;
                background: var(--color-white);
                flex-direction: column;
                justify-content: center;
                gap: 30px;
                padding: 40px;
                box-shadow: var(--shadow-lg);
                transition: right .35s ease;
                z-index: 105;
            }
            .nav-links.open {
                right: 0;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-link {
                font-size: 1.1rem;
            }
            .nav-link::after {
                display: none;
            }
            .nav-link.active {
                color: var(--color-accent-dark);
            }
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(2,6,23,0.92) 0%, rgba(15,23,42,0.78) 100%),
                        url('/assets/images/backpic/back-1.png') no-repeat center center / cover;
            color: var(--color-white);
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to top, rgba(2,6,23,0.5) 0%, transparent 40%);
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 80px 0;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245,158,11,0.15);
            border: 1px solid rgba(245,158,11,0.35);
            color: var(--color-accent-light);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 28px;
            letter-spacing: 1px;
        }
        .hero-badge i {
            font-size: 0.75rem;
        }
        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }
        .hero-title .highlight {
            color: var(--color-accent);
        }
        .hero-subtitle {
            font-size: clamp(1rem, 2vw, 1.25rem);
            color: rgba(255,255,255,0.85);
            max-width: 600px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 44px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 999px;
            transition: all .3s ease;
            letter-spacing: 0.3px;
        }
        .btn-primary {
            background: var(--color-accent);
            color: var(--color-primary-dark);
            box-shadow: 0 4px 16px rgba(245,158,11,0.3);
        }
        .btn-primary:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.4);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-white);
            border: 1.5px solid rgba(255,255,255,0.5);
        }
        .btn-outline:hover {
            border-color: var(--color-white);
            background: rgba(255,255,255,0.1);
            transform: translateY(-2px);
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .hero-stat-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,255,255,0.08);
            border: 1px solid rgba(255,255,255,0.12);
            backdrop-filter: blur(4px);
            padding: 8px 18px;
            border-radius: 12px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.9);
        }
        .hero-stat-item .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22c55e;
            box-shadow: 0 0 8px rgba(34,197,94,0.6);
        }
        .hero-stat-item .dot.warn {
            background: var(--color-accent);
            box-shadow: 0 0 8px rgba(245,158,11,0.6);
        }

        /* ========== 区块通用 ========== */
        .section {
            padding: var(--space-section) 0;
        }
        .section-alt {
            background: var(--color-white);
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 60px;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--color-accent-dark);
            background: rgba(245,158,11,0.1);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 1px;
        }
        .section-head h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.35;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--color-text-muted);
            font-size: 1rem;
            line-height: 1.7;
        }

        /* ========== 核心优势 ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--color-white);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(245,158,11,0.3);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.25rem;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            color: var(--color-accent-light);
            margin-bottom: 22px;
        }
        .feature-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        /* ========== 分类入口 ========== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }
        .category-card {
            position: relative;
            background: var(--color-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all .35s ease;
        }
        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }
        .category-card-img {
            position: relative;
            height: 230px;
            overflow: hidden;
        }
        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .category-card:hover .category-card-img img {
            transform: scale(1.05);
        }
        .category-card-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(2,6,23,0.5), transparent 60%);
        }
        .category-card-body {
            padding: 28px;
        }
        .category-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .category-card-body p {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
        }
        .category-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-accent-dark);
            transition: gap .3s ease;
        }
        .category-card-link:hover {
            gap: 12px;
        }

        /* ========== 资讯列表 ========== */
        .news-list {
            max-width: 900px;
            margin: 0 auto;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            margin-bottom: 14px;
            transition: all .3s ease;
        }
        .news-item:hover {
            border-color: rgba(245,158,11,0.4);
            box-shadow: var(--shadow-md);
            transform: translateX(6px);
        }
        .news-item-tag {
            flex-shrink: 0;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--color-accent-dark);
            background: rgba(245,158,11,0.1);
            padding: 3px 12px;
            border-radius: 999px;
            white-space: nowrap;
        }
        .news-item-content {
            flex: 1;
            min-width: 0;
        }
        .news-item-content h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-item-content p {
            font-size: 0.86rem;
            color: var(--color-text-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .news-item-time {
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            white-space: nowrap;
        }
        .news-item-arrow {
            flex-shrink: 0;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--color-bg);
            color: var(--color-text-muted);
            transition: all .3s ease;
            font-size: 0.9rem;
        }
        .news-item:hover .news-item-arrow {
            background: var(--color-accent);
            color: var(--color-primary-dark);
        }
        .news-empty {
            text-align: center;
            padding: 50px 20px;
            color: var(--color-text-muted);
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
        }
        .news-more {
            text-align: center;
            margin-top: 36px;
        }

        /* ========== 数据统计 ========== */
        .stats-section {
            background: linear-gradient(135deg, rgba(2,6,23,0.95), rgba(15,23,42,0.88)),
                        url('/assets/images/backpic/back-2.png') no-repeat center center / cover;
            padding: 90px 0;
            color: var(--color-white);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
        }
        .stat-block {
            text-align: center;
            padding: 20px;
        }
        .stat-block .number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-accent-light);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-block .label {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.7);
        }
        .stat-divider {
            width: 1px;
            background: rgba(255,255,255,0.1);
        }

        /* ========== 访问流程 ========== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
        }
        .process-step {
            position: relative;
            text-align: center;
            padding: 40px 20px;
            background: var(--color-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: all .3s ease;
        }
        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .process-step .step-num {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-accent-light);
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        .process-step::after {
            content: '→';
            position: absolute;
            top: 50%;
            right: -24px;
            transform: translateY(-50%);
            color: var(--color-border);
            font-size: 1.4rem;
            z-index: 2;
        }
        .process-step:last-child::after {
            display: none;
        }

        /* ========== FAQ ========== */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color .3s ease;
        }
        .faq-item[open] {
            border-color: rgba(245,158,11,0.4);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            transition: color .3s ease;
        }
        .faq-item summary:hover {
            color: var(--color-accent-dark);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 1.5rem;
            font-weight: 400;
            color: var(--color-text-muted);
            transition: transform .3s ease;
            line-height: 1;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
            color: var(--color-accent);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            color: var(--color-text-muted);
            font-size: 0.92rem;
            line-height: 1.8;
        }
        .faq-item .faq-answer p {
            margin-bottom: 8px;
        }
        .faq-item .faq-answer p:last-child {
            margin-bottom: 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: var(--radius-xl);
            padding: 64px 48px;
            text-align: center;
            color: var(--color-white);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(245,158,11,0.2);
        }
        .cta-section h2 {
            font-size: clamp(1.6rem, 3vw, 2.2rem);
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.8);
            max-width: 520px;
            margin: 0 auto 32px;
            font-size: 1rem;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--color-primary-dark);
            padding: 70px 0 30px;
            color: rgba(255,255,255,0.7);
            margin-top: 80px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            margin-bottom: 50px;
        }
        .footer-brand .logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--color-accent-light);
            margin-bottom: 12px;
            display: inline-block;
        }
        .footer-brand p {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.6);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            font-size: 0.88rem;
            color: rgba(255,255,255,0.6);
            padding: 4px 0;
            transition: color .25s ease, padding-left .25s ease;
        }
        .footer-col a:hover {
            color: var(--color-accent-light);
            padding-left: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.82rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a:hover {
            color: var(--color-accent-light);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .process-step::after {
                display: none;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stat-divider {
                display: none;
            }
            .news-item {
                flex-wrap: wrap;
            }
            .news-item-time {
                display: none;
            }
        }
        @media (max-width: 768px) {
            :root {
                --space-section: 80px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hero {
                min-height: 520px;
            }
            .hero-content {
                padding: 50px 0;
            }
            .cta-section {
                padding: 40px 24px;
            }
        }
        @media (max-width: 520px) {
            .features-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .hero-buttons {
                flex-direction: column;
                gap: 12px;
            }
            .btn {
                width: 100%;
            }
            .hero-stats {
                flex-direction: column;
                gap: 8px;
            }
            .news-item {
                padding: 16px;
                gap: 12px;
            }
            .news-item-content h3 {
                font-size: 0.95rem;
            }
            .news-item-tag {
                font-size: 0.7rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .stat-block .number {
                font-size: 2rem;
            }
        }

        /* ========== 动画 ========== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .hero-content > * {
            animation: fadeInUp .6s ease both;
        }
        .hero-content > *:nth-child(2) { animation-delay: .1s; }
        .hero-content > *:nth-child(3) { animation-delay: .2s; }
        .hero-content > *:nth-child(4) { animation-delay: .3s; }

        /* ========== 滚动条美化 ========== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--color-bg);
        }
        ::-webkit-scrollbar-thumb {
            background: #cbd5e1;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #94a3b8;
        }

        /* ========== 焦点状态 ========== */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

/* roulang page: category1 */
:root {
            --primary: #0057FF;
            --primary-hover: #0048D6;
            --accent: #FF3B30;
            --bg: #F5F7FA;
            --bg-deep: #0B0E14;
            --panel: #12161F;
            --text: #1A1D24;
            --text-weak: #6B7280;
            --border: #E5E9F0;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.08);
            --shadow-lg: 0 16px 50px rgba(0,0,0,0.12);
            --container-w: 1200px;
            --space-section: 100px;
            --space-section-md: 70px;
            --space-section-sm: 50px;
            --font: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --mono: 'SF Mono', 'JetBrains Mono', Consolas, monospace;
        }
        
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        
        body {
            font-family: var(--font);
            line-height: 1.7;
            background: var(--bg);
            color: var(--text);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        
        img {
            max-width: 100%;
            display: block;
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s;
        }
        
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(0, 87, 255, .35);
            outline-offset: 2px;
            border-radius: 6px;
        }
        
        .container {
            width: min(var(--container-w), 92%);
            margin-inline: auto;
        }
        
        /* ======== Header / Nav ======== */
        .site-header {
            background: rgba(255, 255, 255, .9);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 0, 0, .06);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: box-shadow .3s, background .3s;
        }
        
        .site-header.is-scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, .06);
            background: rgba(255, 255, 255, .97);
        }
        
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
            gap: 20px;
        }
        
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }
        
        .nav-logo::before {
            content: '';
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary), #00C6FF);
            display: block;
            box-shadow: 0 4px 12px rgba(0, 87, 255, .25);
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .nav-link {
            padding: 10px 18px;
            border-radius: 10px;
            font-size: .95rem;
            font-weight: 500;
            color: var(--text-weak);
            position: relative;
            transition: background .25s, color .25s;
            white-space: nowrap;
        }
        
        .nav-link:hover {
            background: rgba(0, 87, 255, .06);
            color: var(--primary);
        }
        
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
            background: rgba(0, 87, 255, .08);
        }
        
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary);
        }
        
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            flex-direction: column;
            gap: 5px;
        }
        
        .nav-toggle span {
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 3px;
            transition: transform .3s, opacity .3s;
        }
        
        .nav-toggle:hover span {
            background: var(--primary);
        }
        
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            
            .nav-links {
                position: absolute;
                top: 74px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 20px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: transform .35s, opacity .3s;
                box-shadow: 0 20px 30px rgba(0, 0, 0, .06);
            }
            
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            
            .nav-link {
                width: 100%;
                text-align: center;
                padding: 14px 18px;
                font-size: 1.05rem;
            }
            
            .nav-link.active::after {
                bottom: 6px;
            }
        }
        
        /* ======== Hero Banner ======== */
        .page-hero {
            position: relative;
            padding: 110px 0 100px;
            background: linear-gradient(135deg, rgba(11, 14, 20, .94), rgba(11, 14, 20, .82)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        
        .page-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 87, 255, .25), transparent 70%);
            pointer-events: none;
        }
        
        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            backdrop-filter: blur(8px);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: .85rem;
            letter-spacing: 1px;
            color: rgba(255, 255, 255, .9);
            margin-bottom: 24px;
            font-weight: 500;
        }
        
        .page-hero .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #34C759;
            box-shadow: 0 0 0 4px rgba(52, 199, 89, .25);
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: .6; transform: scale(1.2); }
        }
        
        .page-hero h1 {
            font-size: clamp(2rem, 4.5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: -1px;
            max-width: 720px;
            margin-bottom: 20px;
        }
        
        .page-hero h1 span {
            background: linear-gradient(120deg, #4DA3FF, #00E0FF);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .page-hero p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, .75);
            max-width: 600px;
            line-height: 1.7;
        }
        
        .page-hero .hero-meta {
            display: flex;
            gap: 24px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        
        .page-hero .hero-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .1);
            padding: 10px 18px;
            border-radius: 12px;
            font-size: .9rem;
            color: rgba(255, 255, 255, .85);
        }
        
        .page-hero .hero-meta .meta-item i {
            color: var(--primary);
            font-size: 1rem;
        }
        
        .page-hero .hero-meta .meta-item strong {
            color: #fff;
            margin-left: 4px;
        }
        
        /* ======== Section Common ======== */
        .section {
            padding: var(--space-section) 0;
        }
        
        .section.alt {
            background: #fff;
        }
        
        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        
        .section-header .kicker {
            display: inline-block;
            font-size: .8rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(0, 87, 255, .08);
            padding: 6px 14px;
            border-radius: 50px;
            margin-bottom: 14px;
        }
        
        .section-header h2 {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.5px;
            color: var(--text);
            margin-bottom: 12px;
        }
        
        .section-header p {
            color: var(--text-weak);
            font-size: 1.05rem;
            line-height: 1.6;
        }
        
        /* ======== Cards Grid ======== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            margin-top: 20px;
        }
        
        .entry-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            position: relative;
            transition: transform .3s, box-shadow .3s, border-color .3s;
            overflow: hidden;
        }
        
        .entry-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), #00C6FF);
            opacity: 0;
            transition: opacity .3s;
        }
        
        .entry-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(0, 87, 255, .2);
        }
        
        .entry-card:hover::before {
            opacity: 1;
        }
        
        .entry-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(0, 87, 255, .1), rgba(0, 198, 255, .1));
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        
        .entry-card .card-icon i {
            font-size: 1.4rem;
            color: var(--primary);
        }
        
        .entry-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        
        .entry-card p {
            color: var(--text-weak);
            font-size: .95rem;
            line-height: 1.6;
            margin-bottom: 16px;
        }
        
        .entry-card .card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        
        .entry-card .card-tags span {
            font-size: .75rem;
            padding: 4px 12px;
            border-radius: 50px;
            background: rgba(0, 87, 255, .06);
            color: var(--primary);
            font-weight: 600;
        }
        
        /* ======== Notice List ======== */
        .notice-wrap {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 40px;
            align-items: start;
        }
        
        .notice-list {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 8px 0;
            overflow: hidden;
        }
        
        .notice-item {
            display: flex;
            gap: 16px;
            padding: 18px 24px;
            border-bottom: 1px solid rgba(0, 0, 0, .04);
            transition: background .2s;
        }
        
        .notice-item:last-child {
            border-bottom: none;
        }
        
        .notice-item:hover {
            background: rgba(0, 87, 255, .02);
        }
        
        .notice-date {
            flex-shrink: 0;
            font-family: var(--mono);
            font-size: .8rem;
            color: var(--text-weak);
            background: rgba(0, 0, 0, .03);
            padding: 6px 10px;
            border-radius: 8px;
            height: fit-content;
            line-height: 1.2;
        }
        
        .notice-content h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
        }
        
        .notice-content p {
            font-size: .85rem;
            color: var(--text-weak);
            line-height: 1.5;
        }
        
        .notice-item .status-badge {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 50px;
            font-size: .7rem;
            font-weight: 600;
            margin-left: 8px;
            vertical-align: middle;
        }
        
        .status-badge.safe {
            background: rgba(52, 199, 89, .1);
            color: #219653;
        }
        
        .status-badge.warn {
            background: rgba(255, 149, 0, .1);
            color: #E67E00;
        }
        
        .status-badge.info {
            background: rgba(0, 87, 255, .08);
            color: var(--primary);
        }
        
        /* ======== Guide / Flow ======== */
        .guide-side {
            background: var(--bg-deep);
            border-radius: var(--radius-lg);
            padding: 40px;
            color: #fff;
            position: sticky;
            top: 100px;
            overflow: hidden;
        }
        
        .guide-side::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 150px;
            height: 150px;
            border-radius: 50%;
            background: rgba(0, 87, 255, .3);
            filter: blur(50px);
        }
        
        .guide-side h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        
        .guide-side p {
            color: rgba(255, 255, 255, .7);
            font-size: .95rem;
            margin-bottom: 24px;
            line-height: 1.6;
        }
        
        .guide-side .guide-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .guide-side .guide-list li {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            font-size: .92rem;
            align-items: center;
        }
        
        .guide-side .guide-list li:last-child {
            border-bottom: none;
        }
        
        .guide-side .guide-list i {
            color: #34C759;
            font-size: .9rem;
            width: 20px;
            text-align: center;
            flex-shrink: 0;
        }
        
        .flow-steps {
            display: grid;
            gap: 0;
        }
        
        .flow-step {
            display: flex;
            gap: 22px;
            padding: 20px 0;
            position: relative;
        }
        
        .flow-step:not(:last-child)::before {
            content: '';
            position: absolute;
            left: 19px;
            top: 44px;
            bottom: -4px;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), rgba(0, 87, 255, .1));
        }
        
        .flow-step .step-num {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), #00C6FF);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 6px 18px rgba(0, 87, 255, .3);
            flex-shrink: 0;
            position: relative;
            z-index: 1;
        }
        
        .flow-step .step-content {
            padding-top: 4px;
        }
        
        .flow-step .step-content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
        }
        
        .flow-step .step-content p {
            color: var(--text-weak);
            font-size: .9rem;
            line-height: 1.6;
        }
        
        /* ======== FAQ ======== */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }
        
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            transition: box-shadow .3s, border-color .3s;
        }
        
        .faq-item:hover {
            border-color: rgba(0, 87, 255, .2);
            box-shadow: var(--shadow-sm);
        }
        
        .faq-item .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
            cursor: pointer;
        }
        
        .faq-item .faq-q h4 {
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.4;
        }
        
        .faq-item .faq-q .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(0, 87, 255, .08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .75rem;
            color: var(--primary);
            transition: transform .3s, background .3s;
        }
        
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s;
            color: var(--text-weak);
            font-size: .92rem;
            line-height: 1.7;
        }
        
        .faq-item.open .faq-a {
            max-height: 300px;
            padding-top: 14px;
        }
        
        /* ======== CTA ======== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #0B0E14 0%, #101826 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(0, 87, 255, .15);
            filter: blur(80px);
        }
        
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(0, 198, 255, .1);
            filter: blur(80px);
        }
        
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
        }
        
        .cta-inner h2 {
            font-size: clamp(1.7rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 16px;
        }
        
        .cta-inner p {
            color: rgba(255, 255, 255, .7);
            font-size: 1rem;
            margin-bottom: 28px;
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all .3s ease;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #007AFF);
            color: #fff;
            box-shadow: 0 8px 24px rgba(0, 87, 255, .3);
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(0, 87, 255, .4);
        }
        
        .btn-ghost {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .2);
            color: #fff;
        }
        
        .btn-ghost:hover {
            background: rgba(255, 255, 255, .15);
            transform: translateY(-3px);
        }
        
        .btn-lg {
            padding: 16px 38px;
            font-size: 1.05rem;
        }
        
        /* ======== Cover Feature ======== */
        .feature-block {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-sm);
        }
        
        .feature-block .feature-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        
        .feature-block .feature-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s;
        }
        
        .feature-block .feature-img:hover img {
            transform: scale(1.02);
        }
        
        .feature-block .feature-content h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        
        .feature-block .feature-content p {
            color: var(--text-weak);
            margin-bottom: 18px;
        }
        
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .feature-list li {
            display: flex;
            gap: 10px;
            padding: 6px 0;
            font-size: .95rem;
            color: var(--text);
            align-items: center;
        }
        
        .feature-list li i {
            color: #34C759;
            font-size: .85rem;
            width: 18px;
            text-align: center;
        }
        
        /* ======== Footer ======== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, .7);
            padding: 60px 0 20px;
            font-size: .9rem;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 40px;
        }
        
        .footer-brand .logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        
        .footer-brand .logo::before {
            content: '';
            width: 24px;
            height: 24px;
            border-radius: 7px;
            background: linear-gradient(135deg, var(--primary), #00C6FF);
            display: block;
        }
        
        .footer-brand p {
            font-size: .88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, .5);
            max-width: 320px;
        }
        
        .footer-col h4 {
            font-size: .9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        
        .footer-col a {
            display: block;
            padding: 5px 0;
            color: rgba(255, 255, 255, .5);
            font-size: .88rem;
            transition: color .25s, padding-left .25s;
        }
        
        .footer-col a:hover {
            color: #fff;
            padding-left: 4px;
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            font-size: .8rem;
            color: rgba(255, 255, 255, .35);
        }
        
        /* ======== JSON-LD ======== */
        .breadcrumb-bar {
            padding: 14px 0;
            background: #fff;
            border-bottom: 1px solid var(--border);
            font-size: .85rem;
        }
        
        .breadcrumb-bar .container {
            display: flex;
            gap: 8px;
            align-items: center;
            color: var(--text-weak);
        }
        
        .breadcrumb-bar a {
            color: var(--primary);
        }
        
        .breadcrumb-bar .sep {
            color: rgba(0, 0, 0, .2);
        }
        
        /* ======== Responsive ======== */
        @media (max-width: 1024px) {
            :root {
                --space-section: 80px;
            }
            
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            
            .notice-wrap {
                grid-template-columns: 1fr;
            }
            
            .guide-side {
                position: static;
            }
            
            .feature-block {
                grid-template-columns: 1fr;
                padding: 28px;
            }
        }
        
        @media (max-width: 768px) {
            :root {
                --space-section: 60px;
            }
            
            .card-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            
            .page-hero {
                padding: 80px 0;
            }
            
            .page-hero .hero-meta {
                flex-direction: column;
                gap: 10px;
            }
            
            .faq-item {
                padding: 18px 20px;
            }
            
            .cta-section {
                padding: 60px 0;
            }
            
            .feature-block {
                padding: 20px;
            }
            
            .notice-item {
                flex-direction: column;
                gap: 8px;
                padding: 16px 18px;
            }
            
            .notice-date {
                align-self: flex-start;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                width: 94%;
            }
            
            .nav-logo {
                font-size: 1.1rem;
            }
            
            .page-hero h1 {
                font-size: 1.8rem;
            }
            
            .page-hero p {
                font-size: .95rem;
            }
            
            .section-header h2 {
                font-size: 1.6rem;
            }
            
            .guide-side {
                padding: 24px;
            }
            
            .btn {
                width: 100%;
                justify-content: center;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        
        /* ======== Animations ======== */
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .fade-up {
            animation: fadeUp .7s ease both;
        }
        
        .delay-1 { animation-delay: .1s; }
        .delay-2 { animation-delay: .2s; }
        .delay-3 { animation-delay: .3s; }

/* roulang page: article */
:root {
    --primary: #e11d48;
    --primary-dark: #be123c;
    --primary-light: #fdf2f4;
    --dark: #0f172a;
    --slate: #334155;
    --muted: #64748b;
    --bg: #f8fafc;
    --surface: #ffffff;
    --border: #e2e8f0;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 20px 40px rgba(15, 23, 42, 0.12);
}
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg);
    color: var(--slate);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
button,
input {
    font-family: inherit;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    transition: box-shadow 0.3s, background 0.3s;
}
.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-sm);
}
.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 68px;
    gap: 24px;
}
.nav-logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.02em;
    white-space: nowrap;
}
.nav-logo:hover {
    color: var(--primary);
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 2.25rem;
}
.nav-link {
    position: relative;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--muted);
    padding: 0.25rem 0;
    transition: color 0.2s;
    white-space: nowrap;
}
.nav-link:hover {
    color: var(--dark);
}
.nav-link.active {
    color: var(--dark);
    font-weight: 600;
}
.nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -4px;
    height: 2px;
    border-radius: 2px;
    background: var(--primary);
}
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 42px;
    height: 42px;
    padding: 8px;
    background: none;
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.2s;
}
.nav-toggle:hover {
    background: var(--bg);
}
.nav-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}
.nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}
.article-hero {
    position: relative;
    background-size: cover;
    background-position: center;
    background-color: var(--dark);
    color: #fff;
    padding: 4rem 0 4.5rem;
}
.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.94) 0%, rgba(15, 23, 42, 0.78) 48%, rgba(15, 23, 42, 0.45) 100%);
    z-index: 1;
}
.article-hero .container {
    position: relative;
    z-index: 2;
}
.article-hero-simple {
    position: relative;
    background-color: var(--dark);
    color: #fff;
    padding: 3rem 0;
}
.article-hero-simple::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 41, 59, 0.88) 100%);
    z-index: 1;
}
.article-hero-simple .container {
    position: relative;
    z-index: 2;
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    flex-wrap: wrap;
}
.breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.2s;
}
.breadcrumb a:hover {
    color: #fff;
}
.breadcrumb .sep {
    color: rgba(255, 255, 255, 0.3);
}
.breadcrumb .current {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.325rem 0.875rem;
    border-radius: 9999px;
    font-size: 0.8125rem;
    font-weight: 600;
    line-height: 1.2;
}
.badge-primary {
    background: rgba(225, 29, 72, 0.18);
    color: #fda4af;
    border: 1px solid rgba(225, 29, 72, 0.35);
}
.badge-light {
    background: var(--primary-light);
    color: var(--primary);
}
.article-date {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}
.article-date svg {
    width: 16px;
    height: 16px;
    opacity: 0.7;
}
.article-title {
    font-size: clamp(1.75rem, 4.5vw, 2.75rem);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: -0.03em;
    max-width: 920px;
    margin-bottom: 1rem;
    color: #fff;
}
.article-summary {
    font-size: 1.125rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.75);
    max-width: 780px;
    margin-bottom: 0;
}
.article-main {
    padding: 3.5rem 0;
}
.article-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
}
@media (min-width: 1024px) {
    .article-main {
        padding: 4.5rem 0;
    }
    .article-grid {
        grid-template-columns: minmax(0, 1fr) 340px;
        gap: 3rem;
    }
}
.article-content {
    min-width: 0;
}
.article-body {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    font-size: 1.0625rem;
    line-height: 1.85;
    color: var(--slate);
    word-break: break-word;
}
@media (min-width: 768px) {
    .article-body {
        padding: 2.75rem;
    }
}
.article-body h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 2rem 0 1rem;
    color: var(--dark);
    letter-spacing: -0.02em;
}
.article-body h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 1.5rem 0 0.75rem;
    color: var(--dark);
}
.article-body h4 {
    font-size: 1.0625rem;
    font-weight: 600;
    margin: 1.25rem 0 0.5rem;
    color: var(--dark);
}
.article-body p {
    margin-bottom: 1.25rem;
}
.article-body ul,
.article-body ol {
    margin-bottom: 1.25rem;
    padding-left: 1.6rem;
}
.article-body ul li {
    list-style: disc;
    margin-bottom: 0.5rem;
}
.article-body ol li {
    list-style: decimal;
    margin-bottom: 0.5rem;
}
.article-body blockquote {
    border-left: 4px solid var(--primary);
    padding: 1rem 1.5rem;
    background: var(--primary-light);
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 1.5rem 0;
    font-style: normal;
    color: var(--dark);
}
.article-body blockquote p {
    margin-bottom: 0;
}
.article-body img {
    border-radius: var(--radius);
    margin: 1.5rem 0;
    max-width: 100%;
    height: auto;
}
.article-body a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 4px;
    transition: color 0.2s;
}
.article-body a:hover {
    color: var(--primary-dark);
}
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9375rem;
}
.article-body table th,
.article-body table td {
    border: 1px solid var(--border);
    padding: 0.75rem 1rem;
    text-align: left;
}
.article-body table th {
    background: var(--bg);
    font-weight: 600;
    color: var(--dark);
}
.article-sidebar {
    min-width: 0;
}
.sidebar-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}
.sidebar-card h3 {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}
.sidebar-card.dark {
    background: var(--dark);
    border-color: transparent;
    color: #fff;
}
.sidebar-card.dark h3 {
    color: #fff;
}
.info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.info-list li {
    padding: 0.7rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
}
.info-list li:last-child {
    border-bottom: none;
    display: block;
}
.info-list li span {
    color: var(--muted);
    width: 60px;
    flex-shrink: 0;
}
.info-list li strong {
    color: var(--dark);
    font-weight: 600;
    word-break: break-all;
}
.tag-wrap {
    margin-top: 0.5rem;
}
.tag {
    display: inline-block;
    background: #f1f5f9;
    border-radius: 9999px;
    padding: 0.3rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--slate);
    margin: 0.25rem 0.25rem 0 0;
    transition: background 0.2s, color 0.2s;
}
.tag:hover {
    background: var(--primary-light);
    color: var(--primary);
}
.quick-link {
    display: block;
    padding: 0.625rem 0;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.9375rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: color 0.2s, padding-left 0.2s;
}
.quick-link:last-child {
    border-bottom: none;
}
.quick-link:hover {
    color: #fff;
    padding-left: 0.5rem;
}
.insight-section {
    padding: 0 0 3rem;
}
.insight-panel {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    background: var(--dark);
    color: #fff;
    border-radius: var(--radius);
    padding: 1.75rem 2rem;
    border-left: 4px solid var(--primary);
    box-shadow: var(--shadow);
}
.insight-dot {
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 0.55rem;
    box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.2);
}
.insight-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 0.5rem;
}
.insight-content p {
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
    margin: 0;
}
.related-section {
    padding: 0 0 4rem;
}
.section-head {
    text-align: center;
    margin-bottom: 2.75rem;
}
.section-eyebrow {
    display: block;
    font-size: 0.8125rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 0.625rem;
}
.section-head h2 {
    font-size: 1.875rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.02em;
}
.related-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}
@media (min-width: 768px) {
    .related-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
.related-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}
.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.related-card img {
    width: 100%;
    height: 170px;
    object-fit: cover;
    transition: transform 0.4s;
}
.related-card:hover img {
    transform: scale(1.04);
}
.related-card-body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.related-card-body .badge {
    align-self: flex-start;
    margin-bottom: 0.75rem;
}
.related-card-body h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}
.related-card-body p {
    font-size: 0.90625rem;
    color: var(--muted);
    line-height: 1.65;
    margin: 0;
}
.faq-section {
    padding: 0 0 4rem;
}
.faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
}
@media (min-width: 768px) {
    .faq-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}
.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: box-shadow 0.3s, border-color 0.3s;
}
.faq-item:hover {
    box-shadow: var(--shadow-sm);
    border-color: #cbd5e1;
}
.faq-item h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.625rem;
    color: var(--dark);
    line-height: 1.4;
}
.faq-item p {
    color: var(--muted);
    line-height: 1.7;
    font-size: 0.90625rem;
    margin: 0;
}
.cta-section {
    padding: 0 0 4.5rem;
}
.cta-banner {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 55%, #be123c 120%);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.cta-banner::after {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(225, 29, 72, 0.15);
    pointer-events: none;
}
.cta-banner h2 {
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}
.cta-banner p {
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 1.75rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}
.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    border-radius: 9999px;
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: all 0.25s;
    cursor: pointer;
    border: none;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(225, 29, 72, 0.35);
}
.btn-outline-light {
    border: 2px solid rgba(255, 255, 255, 0.45);
    color: #fff;
    background: transparent;
}
.btn-outline-light:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}
.not-found {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--surface);
    border: 1px dashed #cbd5e1;
    border-radius: var(--radius-lg);
}
.not-found-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1.5rem;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
}
.not-found h2 {
    font-size: 1.875rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}
.not-found p {
    color: var(--muted);
    margin-bottom: 1.75rem;
    font-size: 1rem;
}
.site-footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 0;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding-bottom: 2.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: 1.6fr 1fr 1fr;
        gap: 3rem;
    }
}
.footer-brand .logo {
    font-size: 1.375rem;
    font-weight: 800;
    color: #fff;
    display: block;
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}
.footer-brand p {
    color: rgba(255, 255, 255, 0.55);
    line-height: 1.75;
    font-size: 0.9375rem;
}
.footer-col h4 {
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: 1.25rem;
    font-weight: 700;
}
.footer-col a {
    display: block;
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.9375rem;
    margin-bottom: 0.625rem;
    transition: color 0.2s;
}
.footer-col a:hover {
    color: #fff;
}
.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.35);
    flex-wrap: wrap;
    gap: 0.5rem;
}
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        padding: 0.75rem 1.5rem 1.25rem;
        box-shadow: var(--shadow);
    }
    .nav-links.open {
        display: flex;
    }
    .nav-toggle {
        display: flex;
    }
    .nav-link {
        width: 100%;
        padding: 0.75rem 0;
        font-size: 1rem;
    }
    .article-hero {
        padding: 3rem 0 3.5rem;
    }
    .article-body {
        padding: 1.5rem;
    }
    .cta-banner h2 {
        font-size: 1.5rem;
    }
    .faq-grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    .nav-logo {
        font-size: 1.0625rem;
    }
    .article-title {
        font-size: 1.625rem;
    }
    .article-summary {
        font-size: 1rem;
    }
    .related-grid {
        grid-template-columns: 1fr;
    }
    .cta-banner {
        padding: 2.25rem 1.25rem;
    }
    .cta-buttons .btn {
        width: 100%;
    }
}

/* roulang page: category2 */
/* ===== Design Variables ===== */
:root {
    --bg-night: #0d1117;
    --bg-panel: #161b22;
    --bg-panel2: #1c2128;
    --bg-elev: #222a33;
    --accent: #e11d48;
    --accent-soft: rgba(225, 29, 72, 0.14);
    --accent-glow: rgba(225, 29, 72, 0.35);
    --text-bright: #eef2f7;
    --text-body: #c6d0dc;
    --text-dim: #8b9bb0;
    --text-faint: #5c6b7f;
    --border: rgba(148, 163, 184, 0.15);
    --border-strong: rgba(148, 163, 184, 0.3);
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 9px;
    --shadow-card: 0 18px 44px -16px rgba(0, 0, 0, 0.55);
    --shadow-hover: 0 26px 60px -20px rgba(0, 0, 0, 0.7);
    --shadow-accent: 0 18px 44px -14px rgba(225, 29, 72, 0.32);
}

/* ===== Reset / Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-night);
    color: var(--text-body);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}
img {
    max-width: 100%;
    display: block;
    height: auto;
}
a {
    color: inherit;
    text-decoration: none;
    transition: color .25s ease;
}
button {
    font: inherit;
    cursor: pointer;
    border: none;
    background: none;
}
input, select, textarea {
    font: inherit;
}
a:focus-visible, button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 6px;
}
::selection {
    background: rgba(225, 29, 72, 0.28);
    color: #fff;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: clamp(20px, 4vw, 40px);
    padding-right: clamp(20px, 4vw, 40px);
}

/* ===== Header & Nav ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(13, 17, 23, 0.55);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(148, 163, 184, 0.09);
    transition: background .35s ease, border-color .35s ease, box-shadow .35s ease;
}
.site-header.scrolled {
    background: rgba(13, 17, 23, 0.92);
    border-bottom-color: var(--border);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
}
.nav-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.nav-logo {
    font-size: 1.28rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--text-bright);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    user-select: none;
}
.nav-logo::before {
    content: "";
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 4px rgba(225, 29, 72, 0.18), 0 0 14px var(--accent-glow);
    flex-shrink: 0;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: clamp(24px, 4vw, 44px);
}
.nav-link {
    position: relative;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-dim);
    letter-spacing: 0.01em;
    padding: 6px 2px;
    transition: color .28s ease;
}
.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
    transition: width .32s cubic-bezier(.22, .61, .36, 1);
}
.nav-link:hover {
    color: var(--text-bright);
}
.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}
.nav-link.active {
    color: var(--text-bright);
}
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(148, 163, 184, 0.06);
    transition: background .25s ease, border-color .25s ease;
}
.nav-toggle:hover {
    background: rgba(148, 163, 184, 0.12);
}
.nav-toggle span {
    width: 20px;
    height: 2px;
    background: var(--text-bright);
    border-radius: 2px;
    margin: 3px 0;
    transition: transform .3s ease, opacity .3s ease;
}
.nav-toggle.active span:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg);
}

/* ===== Hero ===== */
.cat-hero {
    position: relative;
    padding: 172px 0 92px;
    overflow: hidden;
    background-image: linear-gradient(105deg, rgba(13, 17, 23, 0.96) 20%, rgba(13, 17, 23, 0.72) 70%), url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid var(--border);
}
.cat-hero::after {
    content: "";
    position: absolute;
    right: -120px;
    top: 80px;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(225, 29, 72, 0.18), transparent 65%);
    pointer-events: none;
}
.cat-hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: clamp(32px, 5vw, 72px);
    align-items: center;
}
.badge-hk {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-soft);
    border: 1px solid rgba(225, 29, 72, 0.32);
    border-radius: 999px;
    padding: 7px 16px;
}
.badge-hk::before {
    content: "";
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.2);
}
.cat-hero h1 {
    font-size: clamp(2.4rem, 5.5vw, 4.2rem);
    font-weight: 900;
    line-height: 1.12;
    letter-spacing: -0.02em;
    color: var(--text-bright);
    margin: 24px 0 18px;
}
.cat-hero h1 span {
    color: var(--accent);
}
.cat-hero .lead {
    font-size: 1.06rem;
    line-height: 1.8;
    color: var(--text-dim);
    max-width: 540px;
    margin-bottom: 34px;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 28px;
}
.hero-status-bar {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    font-size: 0.88rem;
    color: var(--text-dim);
    background: rgba(148, 163, 184, 0.06);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 10px 22px;
}
.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.16), 0 0 12px rgba(34, 197, 94, 0.4);
}

/* Hero Info Card */
.hero-info-card {
    position: relative;
    z-index: 2;
    background: rgba(22, 27, 34, 0.82);
    backdrop-filter: blur(14px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-card);
    transition: transform .35s ease, box-shadow .35s ease;
}
.hero-info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.info-card-head {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-bright);
    padding-bottom: 18px;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--border);
}
.pulse-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #22c55e;
    animation: pulse 1.8s infinite;
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4); }
    70% { box-shadow: 0 0 0 8px rgba(34, 197, 94, 0); }
    100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}
.info-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 13px 2px;
    font-size: 0.94rem;
}
.info-row + .info-row {
    border-top: 1px dashed rgba(148, 163, 184, 0.13);
}
.info-row span {
    color: var(--text-dim);
}
.info-row strong {
    color: var(--text-bright);
    font-variant-numeric: tabular-nums;
    font-weight: 650;
}
.info-row strong i {
    color: #22c55e;
    font-style: normal;
    font-size: 0.82rem;
    margin-left: 4px;
}
.info-row:last-child strong {
    color: var(--accent);
}

/* ===== Buttons ===== */
.btn-primary,
.btn-ghost,
.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 0.95rem;
    font-weight: 650;
    border-radius: 999px;
    padding: 14px 30px;
    transition: all .3s cubic-bezier(.22, .61, .36, 1);
    position: relative;
    overflow: hidden;
}
.btn-primary {
    background: linear-gradient(135deg, #e11d48, #be123c);
    color: #fff;
    box-shadow: 0 10px 28px -10px rgba(225, 29, 72, 0.55);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 18px 38px -10px rgba(225, 29, 72, 0.6);
}
.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 6px 18px -8px rgba(225, 29, 72, 0.5);
}
.btn-ghost {
    color: var(--text-bright);
    background: rgba(148, 163, 184, 0.08);
    border: 1px solid var(--border-strong);
}
.btn-ghost:hover {
    border-color: rgba(225, 29, 72, 0.55);
    background: rgba(225, 29, 72, 0.08);
    color: #fff;
    transform: translateY(-2px);
}
.btn-outline {
    color: var(--text-bright);
    border: 1px solid var(--border-strong);
    background: transparent;
    padding: 11px 24px;
    font-size: 0.88rem;
}
.btn-outline:hover {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: #fff;
    transform: translateY(-2px);
}

/* ===== Section ===== */
.section-block {
    padding: clamp(70px, 8vw, 110px) 0;
}
section + section {
    border-top: 1px solid rgba(148, 163, 184, 0.08);
}
.section-head {
    max-width: 720px;
    margin-bottom: 52px;
}
.section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.18em;
    color: var(--accent);
    margin-bottom: 14px;
    text-transform: uppercase;
}
.section-tag::before {
    content: "";
    width: 26px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}
.section-head.center .section-tag::after {
    content: "";
    width: 26px;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
}
.section-head h2 {
    font-size: clamp(1.8rem, 3.4vw, 2.7rem);
    line-height: 1.25;
    font-weight: 850;
    letter-spacing: -0.015em;
    color: var(--text-bright);
    margin: 0 0 16px;
}
.section-head p {
    font-size: 1rem;
    color: var(--text-dim);
    line-height: 1.8;
    margin: 0;
}

/* ===== Feature Cards ===== */
.feature-card {
    position: relative;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px 26px;
    transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
    overflow: hidden;
}
.feature-card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--accent), transparent);
    opacity: 0;
    transition: opacity .35s ease;
}
.feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-hover);
}
.feature-card:hover::before {
    opacity: 1;
}
.feature-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--accent-soft);
    border: 1px solid rgba(225, 29, 72, 0.28);
    color: var(--accent);
    font-size: 1.3rem;
    margin-bottom: 20px;
    transition: transform .3s ease;
}
.feature-card:hover .feature-icon {
    transform: scale(1.06);
}
.feature-card h3 {
    font-size: 1.12rem;
    font-weight: 750;
    color: var(--text-bright);
    margin: 0 0 10px;
    letter-spacing: 0.01em;
}
.feature-card p {
    font-size: 0.92rem;
    line-height: 1.75;
    color: var(--text-dim);
    margin: 0;
}

/* ===== Process ===== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.process-step {
    position: relative;
    background: var(--bg-panel2);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px 24px;
    transition: background .3s ease, border-color .3s ease, transform .3s ease;
}
.process-step:hover {
    border-color: rgba(225, 29, 72, 0.42);
    transform: translateY(-4px);
}
.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(225, 29, 72, 0.2), rgba(225, 29, 72, 0.06));
    border: 1px solid rgba(225, 29, 72, 0.3);
    color: var(--accent);
    font-size: 0.92rem;
    font-weight: 850;
    font-variant-numeric: tabular-nums;
    margin-bottom: 18px;
}
.process-step h3 {
    font-size: 1.05rem;
    font-weight: 750;
    color: var(--text-bright);
    margin: 0 0 10px;
}
.process-step p {
    font-size: 0.88rem;
    line-height: 1.7;
    color: var(--text-dim);
    margin: 0;
}
.process-step::after {
    content: "\2192";
    position: absolute;
    top: 40px;
    right: -18px;
    font-size: 1rem;
    color: var(--text-faint);
    z-index: 2;
    background: var(--bg-night);
    border-radius: 50%;
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.process-step:last-child::after {
    display: none;
}

/* ===== Download Cards ===== */
.download-card {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
}
.download-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-strong);
    box-shadow: var(--shadow-hover);
}
.cover-wrap {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-elev);
}
.cover-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease, opacity .3s ease;
}
.download-card:hover .cover-wrap img {
    transform: scale(1.05);
}
.cover-wrap::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(13, 17, 23, 0.55), transparent 60%);
    pointer-events: none;
}
.cover-tag {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
    font-size: 0.74rem;
    font-weight: 750;
    letter-spacing: 0.1em;
    color: #fff;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.22);
    backdrop-filter: blur(8px);
    border-radius: 999px;
    padding: 6px 14px;
}
.card-body {
    padding: 26px 24px 28px;
}
.card-body h3 {
    font-size: 1.18rem;
    font-weight: 800;
    color: var(--text-bright);
    margin: 0 0 8px;
}
.card-body > p {
    font-size: 0.9rem;
    color: var(--text-dim);
    line-height: 1.7;
    margin: 0 0 16px;
}
.spec-list {
    list-style: none;
    margin: 0 0 20px;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 7px;
}
.spec-list li {
    position: relative;
    font-size: 0.86rem;
    color: var(--text-dim);
    padding-left: 24px;
}
.spec-list li::before {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 1px;
    font-size: 0.74rem;
    color: var(--accent);
}

/* ===== Stats ===== */
.stats-section {
    position: relative;
    background-image: url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    padding: clamp(70px, 8vw, 110px) 0;
}
.stats-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(13, 17, 23, 0.94), rgba(13, 17, 23, 0.82));
}
.stats-section .container {
    position: relative;
    z-index: 2;
}
.stat-block {
    text-align: center;
    padding: 30px 20px;
    background: rgba(22, 27, 34, 0.55);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: border-color .3s ease, transform .3s ease;
}
.stat-block:hover {
    border-color: rgba(225, 29, 72, 0.45);
    transform: translateY(-4px);
}
.stat-value {
    display: block;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--text-bright);
    font-variant-numeric: tabular-nums;
    margin-bottom: 8px;
}
.stat-value span {
    color: var(--accent);
}
.stat-label {
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--text-dim);
    text-transform: uppercase;
}

/* ===== FAQ ===== */
.faq-list {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.faq-item {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    transition: border-color .3s ease, background .3s ease, box-shadow .3s ease;
    overflow: hidden;
}
.faq-item:hover {
    border-color: var(--border-strong);
}
.faq-item[open] {
    border-color: rgba(225, 29, 72, 0.38);
    background: var(--bg-panel);
    box-shadow: 0 14px 32px -16px rgba(0, 0, 0, 0.5);
}
.faq-item summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 20px 26px;
    font-size: 1rem;
    font-weight: 650;
    color: var(--text-bright);
    cursor: pointer;
    user-select: none;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary::after {
    content: "\f067";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 0.82rem;
    color: var(--accent);
    background: var(--accent-soft);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform .3s ease, background .3s ease;
}
.faq-item[open] summary::after {
    content: "\f068";
    transform: rotate(360deg);
}
.faq-item summary:hover {
    color: #fff;
}
.faq-item .faq-answer {
    padding: 0 26px 24px;
    font-size: 0.94rem;
    line-height: 1.8;
    color: var(--text-dim);
}

/* ===== CTA ===== */
.cta-panel {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #1a0d13 0%, #161b22 55%, #1c2128 100%);
    border: 1px solid rgba(225, 29, 72, 0.24);
    border-radius: calc(var(--radius-lg) + 6px);
    padding: clamp(44px, 7vw, 76px);
    text-align: center;
    box-shadow: var(--shadow-card);
}
.cta-panel::before {
    content: "";
    position: absolute;
    top: -80px;
    left: 50%;
    transform: translateX(-50%);
    width: 520px;
    height: 220px;
    background: radial-gradient(ellipse, rgba(225, 29, 72, 0.2), transparent 70%);
    pointer-events: none;
}
.cta-panel h2 {
    position: relative;
    font-size: clamp(1.7rem, 3.4vw, 2.6rem);
    font-weight: 900;
    letter-spacing: -0.015em;
    color: var(--text-bright);
    margin: 0 0 14px;
}
.cta-panel p {
    position: relative;
    font-size: 1rem;
    color: var(--text-dim);
    max-width: 600px;
    margin: 0 auto 30px;
    line-height: 1.8;
}
.cta-panel .btn-primary {
    position: relative;
    font-size: 1.02rem;
    padding: 16px 40px;
}

/* ===== Footer ===== */
.site-footer {
    background: #0a0e13;
    border-top: 1px solid var(--border);
    padding: 70px 0 34px;
    margin-top: 40px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: clamp(28px, 5vw, 64px);
    padding-bottom: 42px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}
.footer-brand .logo {
    font-size: 1.22rem;
    font-weight: 800;
    color: var(--text-bright);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}
.footer-brand .logo::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.2), 0 0 12px var(--accent-glow);
}
.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--text-dim);
    max-width: 320px;
    margin: 0;
}
.footer-col h4 {
    font-size: 0.9rem;
    font-weight: 750;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-bright);
    margin: 0 0 20px;
}
.footer-col a {
    display: block;
    font-size: 0.9rem;
    color: var(--text-dim);
    padding: 4px 0;
    transition: color .25s ease, padding-left .25s ease;
}
.footer-col a:hover {
    color: var(--accent);
    padding-left: 6px;
}
.footer-bottom {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding-top: 26px;
    font-size: 0.82rem;
    color: var(--text-faint);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .cat-hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero-info-card {
        max-width: 480px;
    }
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .process-step::after {
        display: none;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 860px) {
    .nav-links {
        position: absolute;
        top: calc(100% + 12px);
        left: 16px;
        right: 16px;
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
        background: rgba(13, 17, 23, 0.98);
        border: 1px solid var(--border);
        border-radius: 16px;
        padding: 18px;
        box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6);
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: all .3s ease;
    }
    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }
    .nav-link {
        display: block;
        width: 100%;
        font-size: 1rem;
        padding: 12px 14px;
        border-radius: 10px;
    }
    .nav-link::after {
        display: none;
    }
    .nav-link:hover,
    .nav-link.active {
        background: var(--accent-soft);
        color: var(--text-bright);
    }
    .nav-toggle {
        display: flex;
    }
    section + section {
        border-top: none;
    }
}

@media (max-width: 640px) {
    .section-block {
        padding: 64px 0;
    }
    .process-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .process-step {
        padding: 24px 22px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
    .hero-actions {
        flex-direction: column;
    }
    .hero-actions .btn-primary,
    .hero-actions .btn-ghost {
        width: 100%;
        justify-content: center;
    }
    .hero-status-bar {
        border-radius: 18px;
    }
    .info-card-head {
        font-size: 0.82rem;
    }
    .cta-panel {
        padding: 40px 24px;
    }
    .cta-panel .btn-primary {
        width: 100%;
    }
}

@media (max-width: 420px) {
    .nav-links {
        left: 12px;
        right: 12px;
    }
    .cat-hero {
        padding: 148px 0 60px;
    }
    .cat-hero h1 {
        font-size: 2rem;
    }
    .badge-hk {
        font-size: 0.72rem;
        padding: 6px 12px;
    }
    .info-row {
        font-size: 0.86rem;
    }
    .stat-block {
        padding: 22px 14px;
    }
    .stat-value {
        font-size: 1.8rem;
    }
    .stat-label {
        font-size: 0.76rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html {
        scroll-behavior: auto;
    }
}