/* roulang page: index */
/* ========== 设计变量 ========== */
        :root {
            --primary: #0FA958;
            --primary-dark: #0C8A46;
            --primary-light: #E6F7EF;
            --secondary: #1A2E22;
            --secondary-light: #2A4034;
            --accent: #FF7A45;
            --accent-light: #FFF0EA;
            --bg-warm: #FAFAF7;
            --bg-gray: #F0F2EE;
            --bg-white: #FFFFFF;
            --text-main: #1F2937;
            --text-secondary: #6B7280;
            --text-muted: #9CA3AF;
            --border-soft: #E5E7EB;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-card: 0 1px 3px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06);
            --shadow-hover: 0 2px 6px rgba(0,0,0,.06), 0 16px 32px rgba(0,0,0,.10);
            --shadow-nav: 0 1px 0 rgba(0,0,0,.05), 0 4px 20px rgba(0,0,0,.06);
            --container: 1200px;
            --space-section: 96px;
            --space-section-md: 64px;
            --space-section-sm: 48px;
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: Inter, "SF Pro Display", system-ui, sans-serif;
        }

        /* ========== Reset / Base ========== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--bg-warm);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: var(--text-main);
            text-decoration: none;
            transition: color .25s ease, background .25s ease, border-color .25s ease, box-shadow .25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        button,
        input {
            font-family: var(--font-sans);
            font-size: 14px;
        }
        ul,
        ol {
            list-style: none;
        }

        /* ========== 容器 ========== */
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all .25s ease;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(15, 169, 88, .35);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(15, 169, 88, .3);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-secondary {
            background: #fff;
            color: var(--text-main);
            border-color: var(--border-soft);
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-card);
        }
        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, .5);
        }
        .btn-outline-light:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, .08);
        }
        .btn-lg {
            height: 52px;
            padding: 0 36px;
            font-size: 17px;
            border-radius: 12px;
        }
        .btn-sm {
            height: 38px;
            padding: 0 18px;
            font-size: 14px;
        }

        /* ========== 标签 / 徽章 ========== */
        .tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .tag-orange {
            background: var(--accent-light);
            color: var(--accent);
        }
        .tag-gray {
            background: var(--bg-gray);
            color: var(--text-secondary);
        }

        /* ========== 导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--bg-warm);
            border-bottom: 1px solid transparent;
            transition: box-shadow .3s ease, border-color .3s ease;
        }
        .site-header.scrolled {
            border-color: var(--border-soft);
            box-shadow: var(--shadow-nav);
        }
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 16px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            font-family: var(--font-num);
            letter-spacing: -0.5px;
            box-shadow: 0 2px 8px rgba(15, 169, 88, .3);
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            padding: 9px 16px;
            border-radius: var(--radius-md);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all .25s ease;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-tools {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-gray);
            border-radius: var(--radius-md);
            padding: 0 14px;
            height: 40px;
            width: 220px;
            border: 1px solid transparent;
            transition: all .25s ease;
        }
        .search-box:focus-within {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 169, 88, .12);
        }
        .search-box .icon {
            width: 16px;
            height: 16px;
            color: var(--text-muted);
            flex-shrink: 0;
        }
        .search-box input {
            flex: 1;
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            color: var(--text-main);
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box kbd {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: 5px;
            font-size: 11px;
            padding: 2px 6px;
            color: var(--text-muted);
            font-family: var(--font-num);
            white-space: nowrap;
            box-shadow: 0 1px 2px rgba(0, 0, 0, .03);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            cursor: pointer;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all .3s ease;
        }
        .nav-toggle:hover {
            background: var(--bg-gray);
        }

        /* 移动端导航抽屉 */
        .mobile-nav {
            display: none;
            background: var(--bg-warm);
            border-top: 1px solid var(--border-soft);
            padding: 12px 24px 20px;
            box-shadow: var(--shadow-nav);
        }
        .mobile-nav .nav-link {
            display: block;
            padding: 12px 14px;
            font-size: 16px;
            border-radius: var(--radius-md);
        }
        .mobile-nav .nav-link.active {
            background: var(--primary-light);
        }
        .mobile-nav .search-box {
            width: 100%;
            margin-top: 12px;
        }
        .mobile-nav .btn {
            width: 100%;
            margin-top: 12px;
        }

        /* ========== Hero 首屏 ========== */
        .hero {
            padding: 150px 0 96px;
            background: var(--bg-warm);
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -120px;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(15, 169, 88, .07) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-inner {
            display: grid;
            grid-template-columns: 1.05fr 0.95fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 24px;
        }
        .hero-badge .dot {
            width: 6px;
            height: 6px;
            background: var(--primary);
            border-radius: 50%;
            animation: pulse 1.5s infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: .5; transform: scale(1.5); }
        }
        .hero h1 {
            font-size: 48px;
            line-height: 1.2;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 20px;
            letter-spacing: -1.5px;
        }
        .hero h1 .highlight {
            color: var(--primary);
        }
        .hero-sub {
            font-size: 18px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 480px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        .platform-tags {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .platform-tags li {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .platform-tags .icon-check {
            width: 16px;
            height: 16px;
            color: var(--primary);
        }
        .hero-media {
            position: relative;
        }
        .hero-media .media-frame {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            aspect-ratio: 16 / 10;
            background: var(--secondary);
            position: relative;
        }
        .hero-media .media-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-media .media-float {
            position: absolute;
            bottom: -18px;
            left: -18px;
            background: #fff;
            padding: 14px 18px;
            border-radius: 14px;
            box-shadow: var(--shadow-hover);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .hero-media .media-float .float-icon {
            width: 32px;
            height: 32px;
            background: var(--accent-light);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 16px;
        }
        .hero-media .media-float .float-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
        }
        .hero-media .media-float .float-sub {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* ========== 数据信任条 ========== */
        .stats-bar {
            background: var(--secondary);
            padding: 36px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stats-item {
            text-align: center;
            padding: 16px 12px;
        }
        .stats-item .num {
            font-family: var(--font-num);
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .stats-item .num span {
            color: var(--accent);
        }
        .stats-item .label {
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            margin-top: 6px;
        }

        /* ========== 核心价值区 ========== */
        .features {
            padding: var(--space-section) 0;
            background: var(--bg-warm);
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 64px;
        }
        .section-head .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .section-head h2 {
            font-size: 36px;
            line-height: 1.25;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .section-head p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
        }
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
            margin-bottom: 80px;
        }
        .feature-row:last-child {
            margin-bottom: 0;
        }
        .feature-row.reverse .feature-media {
            order: 2;
        }
        .feature-row.reverse .feature-content {
            order: 1;
        }
        .feature-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            aspect-ratio: 16 / 11;
            background: var(--bg-gray);
        }
        .feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .feature-media:hover img {
            transform: scale(1.03);
        }
        .feature-content .feature-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent);
            padding: 5px 14px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .feature-content h2 {
            font-size: 28px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .feature-content p {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 20px;
        }
        .feature-points {
            display: grid;
            gap: 10px;
        }
        .feature-points li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
            color: var(--text-main);
        }
        .feature-points .icon {
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 700;
            flex-shrink: 0;
        }

        /* ========== 功能截图轮播 ========== */
        .showcase {
            background: var(--secondary);
            padding: var(--space-section) 0;
            overflow: hidden;
        }
        .showcase .section-head h2 {
            color: #fff;
        }
        .showcase .section-head p {
            color: rgba(255, 255, 255, .6);
        }
        .showcase .section-head .section-tag {
            background: rgba(255, 255, 255, .1);
            color: var(--primary);
        }
        .showcase-scroll {
            display: flex;
            gap: 24px;
            overflow-x: auto;
            padding-bottom: 20px;
            padding: 4px 4px 24px;
            scrollbar-width: thin;
            scrollbar-color: rgba(255, 255, 255, .2) transparent;
        }
        .showcase-scroll::-webkit-scrollbar {
            height: 6px;
        }
        .showcase-scroll::-webkit-scrollbar-track {
            background: transparent;
        }
        .showcase-scroll::-webkit-scrollbar-thumb {
            background: rgba(255, 255, 255, .2);
            border-radius: 100px;
        }
        .showcase-card {
            min-width: 360px;
            max-width: 360px;
            background: var(--secondary-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            padding: 16px 16px 24px;
            transition: transform .3s ease, box-shadow .3s ease;
            flex-shrink: 0;
        }
        .showcase-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, .3);
        }
        .showcase-card .card-img {
            border-radius: 12px;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #1A2E22;
            margin-bottom: 16px;
        }
        .showcase-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .showcase-card .card-title {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .showcase-card .card-desc {
            font-size: 14px;
            color: rgba(255, 255, 255, .55);
            line-height: 1.7;
        }

        /* ========== 系统要求区 ========== */
        .requirements {
            padding: var(--space-section) 0;
            background: var(--bg-warm);
        }
        .req-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 48px;
        }
        .req-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
            transition: all .3s ease;
        }
        .req-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .req-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 24px;
            background: var(--primary-light);
            color: var(--primary);
        }
        .req-card:nth-child(2) .req-icon {
            background: var(--accent-light);
            color: var(--accent);
        }
        .req-card:nth-child(3) .req-icon {
            background: #EEF2FF;
            color: #4F46E5;
        }
        .req-card:nth-child(4) .req-icon {
            background: #FFF7ED;
            color: #EA580C;
        }
        .req-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .req-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
        }

        /* ========== 评价墙 ========== */
        .testimonials {
            padding: var(--space-section) 0;
            background: var(--bg-gray);
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: all .3s ease;
            border: 1px solid var(--border-soft);
        }
        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .testimonial-card .stars {
            color: var(--accent);
            font-size: 16px;
            letter-spacing: 2px;
            margin-bottom: 16px;
        }
        .testimonial-card .quote {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-main);
            margin-bottom: 20px;
            min-height: 88px;
        }
        .testimonial-card .user {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .testimonial-card .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            background: var(--primary);
        }
        .testimonial-card:nth-child(2) .avatar {
            background: var(--accent);
        }
        .testimonial-card:nth-child(3) .avatar {
            background: #4F46E5;
        }
        .testimonial-card .user-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
        }
        .testimonial-card .user-role {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ========== FAQ ========== */
        .faq {
            padding: var(--space-section) 0;
            background: var(--bg-warm);
        }
        .faq-list {
            max-width: 800px;
            margin: 48px auto 0;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border-soft);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: box-shadow .3s ease;
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--bg-gray);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 300;
            color: var(--text-secondary);
            transition: all .3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding-bottom: 20px;
        }

        /* ========== 下载区 ========== */
        .download-app {
            padding: var(--space-section) 0;
            background: var(--secondary);
            color: #fff;
        }
        .download-app .section-head h2 {
            color: #fff;
        }
        .download-app .section-head p {
            color: rgba(255, 255, 255, .6);
        }
        .download-layout {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 40px;
            margin-top: 56px;
            flex-wrap: wrap;
        }
        .download-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .btn-download {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--secondary-light);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: 14px;
            padding: 14px 24px;
            color: #fff;
            transition: all .3s ease;
            text-decoration: none;
            min-width: 150px;
        }
        .btn-download:hover {
            background: var(--primary);
            border-color: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(15, 169, 88, .3);
            color: #fff;
        }
        .btn-download .download-icon {
            font-size: 24px;
        }
        .btn-download .download-info {
            display: flex;
            flex-direction: column;
        }
        .btn-download .download-platform {
            font-size: 13px;
            color: rgba(255, 255, 255, .6);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .btn-download:hover .download-platform {
            color: rgba(255, 255, 255, .8);
        }
        .btn-download .download-store {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.3;
        }
        .qr-card {
            background: #fff;
            border-radius: 14px;
            padding: 16px;
            text-align: center;
            width: 160px;
            box-shadow: var(--shadow-hover);
        }
        .qr-card img {
            width: 120px;
            height: 120px;
            margin: 0 auto 8px;
            border-radius: 8px;
            object-fit: cover;
        }
        .qr-card span {
            display: block;
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ========== 资讯区 ========== */
        .news-section {
            padding: var(--space-section) 0;
            background: var(--bg-warm);
        }
        .section-head-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 40px;
            gap: 20px;
            flex-wrap: wrap;
        }
        .section-head-row h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.5px;
        }
        .section-head-row .view-all {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            color: var(--primary);
            font-weight: 600;
        }
        .section-head-row .view-all:hover {
            gap: 10px;
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .news-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .news-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--bg-gray);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .news-card:hover .news-thumb img {
            transform: scale(1.04);
        }
        .news-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-body .tag {
            align-self: flex-start;
            margin-bottom: 12px;
        }
        .news-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
        }
        .news-body h3 a {
            color: var(--text-main);
        }
        .news-body h3 a:hover {
            color: var(--primary);
        }
        .news-body .news-excerpt {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
            flex: 1;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border-soft);
            padding-top: 14px;
        }
        .news-meta time {
            font-size: 13px;
            color: var(--text-muted);
            font-family: var(--font-num);
        }
        .news-meta .read-more {
            font-size: 14px;
            color: var(--primary);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-meta .read-more:hover {
            gap: 8px;
        }
        .empty-state {
            grid-column: 1 / -1;
            text-align: center;
            padding: 80px 24px;
            background: var(--bg-gray);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-soft);
        }
        .empty-state .empty-icon {
            font-size: 48px;
            margin-bottom: 16px;
            opacity: .5;
        }
        .empty-state p {
            font-size: 16px;
            color: var(--text-secondary);
        }

        /* ========== CTA ========== */
        .cta {
            padding: var(--space-section) 0;
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(15, 169, 88, .15);
            pointer-events: none;
        }
        .cta::after {
            content: "";
            position: absolute;
            bottom: -100px;
            left: -100px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 122, 69, .1);
            pointer-events: none;
        }
        .cta .container {
            position: relative;
            z-index: 1;
        }
        .cta h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -1px;
        }
        .cta p {
            font-size: 16px;
            line-height: 1.7;
            color: rgba(255, 255, 255, .65);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, .7);
            padding-top: 64px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 16px;
            color: #fff;
        }
        .footer-brand .brand-text {
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, .55);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, .55);
            transition: color .25s ease;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 24px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }
        .footer-bottom .copyright {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .footer-bottom .icp a {
            color: rgba(255, 255, 255, .4);
        }
        .footer-bottom .icp a:hover {
            color: var(--primary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1023px) {
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .search-box {
                width: 160px;
            }
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero {
                padding: 120px 0 64px;
            }
            .hero h1 {
                font-size: 38px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .feature-row,
            .feature-row.reverse {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .feature-row.reverse .feature-media {
                order: 0;
            }
            .feature-row.reverse .feature-content {
                order: 0;
            }
            .req-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .showcase-card {
                min-width: 300px;
                max-width: 300px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .nav-bar {
                height: 60px;
            }
            .search-box {
                display: none;
            }
            .btn-nav {
                display: none;
            }
            .mobile-nav {
                display: none;
            }
            .mobile-nav.open {
                display: block;
            }
            .hero {
                padding: 100px 0 48px;
            }
            .hero h1 {
                font-size: 32px;
                line-height: 1.25;
            }
            .hero-sub {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-media .media-float {
                left: 8px;
                bottom: -14px;
            }
            .platform-tags {
                flex-wrap: wrap;
                gap: 10px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stats-item .num {
                font-size: 28px;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .section-head {
                margin-bottom: 40px;
            }
            .feature-row {
                gap: 24px;
                margin-bottom: 56px;
            }
            .feature-content h2 {
                font-size: 22px;
            }
            .req-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-card .quote {
                min-height: auto;
            }
            .download-layout {
                flex-direction: column;
                gap: 24px;
            }
            .download-buttons {
                flex-direction: column;
                width: 100%;
            }
            .btn-download {
                width: 100%;
                justify-content: center;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .section-head-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom .copyright {
                flex-direction: column;
                gap: 6px;
            }
            .showcase-card {
                min-width: 260px;
                max-width: 260px;
            }
            .cta h2 {
                font-size: 26px;
            }
            .cta .btn-group {
                flex-direction: column;
            }
            .cta .btn {
                width: 100%;
            }
        }
        @media (max-width: 520px) {
            .nav-tools {
                gap: 8px;
            }
            .nav-toggle {
                width: 36px;
                height: 36px;
            }
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 13px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-sub {
                font-size: 15px;
            }
            .stats-item .num {
                font-size: 24px;
            }
            .stats-item .label {
                font-size: 13px;
            }
        }

/* roulang page: category1 */
:root {
    --primary: #0FA958;
    --primary-dark: #0B8A47;
    --primary-light: #E5F7EE;
    --graphite: #1A2E22;
    --graphite-dark: #10261A;
    --accent: #FF7A45;
    --accent-light: #FFF1E8;
    --bg: #FAFAF7;
    --bg-gray: #F0F2EE;
    --white: #FFFFFF;
    --text: #1F2937;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --border: #E5E7EB;
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-tag: 6px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06);
    --shadow-md: 0 2px 6px rgba(0,0,0,.06), 0 16px 32px rgba(0,0,0,.10);
    --shadow-lg: 0 4px 12px rgba(0,0,0,.08), 0 24px 48px rgba(0,0,0,.12);
    --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-num: Inter, "SF Pro Display", system-ui, sans-serif;
    --sp-section: 96px;
    --sp-section-tablet: 64px;
    --sp-section-mobile: 48px;
    --container: 1200px;
    --transition: all .28s cubic-bezier(.4,0,.2,1);
  }

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

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

  body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text);
    background: var(--bg);
  }

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

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

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

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

  ul,
  ol {
    list-style: none;
  }

  .container {
    max-width: var(--container);
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
  }

  /* ===== 导航栏 ===== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(250, 250, 247, .9);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
  }

  .site-header.scrolled {
    border-bottom-color: var(--border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, .06);
  }

  .nav-container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
  }

  .brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
    font-size: 20px;
    font-weight: 700;
    color: var(--graphite);
    letter-spacing: .5px;
  }

  .brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), #0B8A47);
    color: #fff;
    font-size: 14px;
    font-weight: 800;
    font-family: var(--font-num);
    letter-spacing: 0;
  }

  .brand-text {
    font-size: 19px;
  }

  .main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
    justify-content: center;
  }

  .nav-link {
    display: inline-block;
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
  }

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

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

  .nav-link.active::after {
    content: "";
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 4px;
    height: 2px;
    border-radius: 2px;
    background: var(--primary);
  }

  .nav-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
  }

  .search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-gray);
    border: 1px solid transparent;
    border-radius: var(--radius-btn);
    padding: 0 12px;
    height: 40px;
    width: 200px;
    transition: var(--transition);
  }

  .search-box:focus-within {
    background: #fff;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(15, 169, 88, .15);
  }

  .search-box svg {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
    flex-shrink: 0;
  }

  .search-box input {
    flex: 1;
    min-width: 0;
    background: transparent;
    font-size: 14px;
    color: var(--text);
  }

  .search-box input::placeholder {
    color: var(--text-muted);
  }

  .search-kbd {
    font-size: 11px;
    color: var(--text-muted);
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 2px 6px;
    font-family: var(--font-num);
    white-space: nowrap;
  }

  .btn-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    height: 40px;
    padding: 0 20px;
    border-radius: var(--radius-btn);
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(15, 169, 88, .25);
    white-space: nowrap;
  }

  .btn-download:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(15, 169, 88, .32);
  }

  .btn-download:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(15, 169, 88, .2);
  }

  .btn-download:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
  }

  .burger-btn {
    display: none;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    align-items: center;
    justify-content: center;
    background: var(--bg-gray);
    transition: var(--transition);
  }

  .burger-btn:hover {
    background: var(--border);
  }

  .burger-btn svg {
    width: 20px;
    height: 20px;
    color: var(--graphite);
  }

  .mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    padding: 16px 0;
    z-index: 999;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
    max-height: calc(100vh - 72px);
    overflow-y: auto;
  }

  .mobile-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-nav .main-nav-mobile {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 0 16px;
  }

  .mobile-nav .nav-link-mb {
    display: block;
    padding: 12px 16px;
    font-size: 16px;
    font-weight: 500;
    color: var(--text);
    border-radius: 10px;
    transition: var(--transition);
  }

  .mobile-nav .nav-link-mb:hover {
    background: var(--bg-gray);
    color: var(--primary);
  }

  .mobile-nav .nav-link-mb.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
  }

  /* ===== Hero ===== */
  .page-hero {
    padding: 150px 0 80px;
    position: relative;
    background: linear-gradient(180deg, #F0F7F2 0%, var(--bg) 100%);
    overflow: hidden;
  }

  .page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: url("/assets/images/backpic/back-1.webp") no-repeat center/cover;
    opacity: .08;
    pointer-events: none;
  }

  .hero-inner {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
    align-items: center;
    position: relative;
    z-index: 2;
  }

  .hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-light);
    border: 1px solid rgba(15, 169, 88, .25);
    color: var(--primary-dark);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
  }

  .hero-badge i {
    display: inline-block;
    background: var(--primary);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    animation: pulse-dot 1.8s infinite;
  }

  @keyframes pulse-dot {
    0%,
    100% {
      box-shadow: 0 0 0 0 rgba(15, 169, 88, .5);
    }
    50% {
      box-shadow: 0 0 0 6px rgba(15, 169, 88, 0);
    }
  }

  .hero-title {
    font-size: 44px;
    line-height: 1.25;
    font-weight: 800;
    color: var(--graphite);
    margin-bottom: 18px;
    letter-spacing: .5px;
  }

  .hero-title .highlight {
    color: var(--primary);
    position: relative;
  }

  .hero-desc {
    font-size: 17px;
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: 30px;
    max-width: 520px;
  }

  .hero-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 36px;
    flex-wrap: wrap;
  }

  .btn-lg {
    height: 48px;
    padding: 0 28px;
    font-size: 16px;
    border-radius: var(--radius-btn);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    transition: var(--transition);
  }

  .btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(15, 169, 88, .3);
  }

  .btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(15, 169, 88, .35);
  }

  .btn-outline {
    background: #fff;
    border: 1px solid var(--border);
    color: var(--text);
  }

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

  .btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
  }

  .hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #fff;
    border: 1px solid var(--border);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 13px;
    color: var(--text-secondary);
    box-shadow: var(--shadow-sm);
  }

  .hero-tag svg {
    width: 14px;
    height: 14px;
    color: var(--primary);
  }

  .hero-image-wrap {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
    aspect-ratio: 16/11;
    background: var(--graphite);
    transition: var(--transition);
  }

  .hero-image-wrap:hover {
    transform: scale(1.01);
  }

  .hero-image-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
  }

  .hero-image-wrap .play-badge {
    position: absolute;
    right: 16px;
    bottom: 16px;
    background: rgba(26, 46, 34, .85);
    backdrop-filter: blur(8px);
    border-radius: 50px;
    padding: 8px 16px;
    color: #fff;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid rgba(255, 255, 255, .15);
  }

  .play-badge .dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse-dot 1.6s infinite;
  }

  /* ===== 数据条 ===== */
  .stats-bar {
    padding: 56px 0;
    background: var(--graphite);
    position: relative;
    overflow: hidden;
  }

  .stats-bar::before {
    content: "";
    position: absolute;
    inset: 0;
    background: url("/assets/images/backpic/back-2.png") no-repeat center/cover;
    opacity: .06;
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
    z-index: 2;
  }

  .stat-item {
    text-align: center;
    padding: 8px 16px;
  }

  .stat-number {
    font-family: var(--font-num);
    font-size: 42px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    letter-spacing: -0.5px;
  }

  .stat-number em {
    font-style: normal;
    color: var(--accent);
  }

  .stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, .7);
    margin-top: 6px;
    letter-spacing: 1px;
  }

  /* ===== 板块标题 ===== */
  .section {
    padding: var(--sp-section) 0;
  }

  .section-bg {
    background: #fff;
  }

  .section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 56px;
  }

  .section-eyebrow {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    background: var(--primary-light);
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 14px;
  }

  .section-title {
    font-size: 34px;
    line-height: 1.3;
    font-weight: 800;
    color: var(--graphite);
    margin-bottom: 12px;
  }

  .section-subtitle {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-secondary);
  }

  /* ===== 创新亮点交错区 ===== */
  .features-alt {
    display: grid;
    gap: 80px;
  }

  .feature-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
  }

  .feature-row.reverse .feature-img {
    order: 2;
  }

  .feature-img {
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    aspect-ratio: 4/3;
    background: var(--bg-gray);
    transition: var(--transition);
  }

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

  .feature-content {
    padding: 8px 0;
  }

  .feature-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 700;
    color: var(--primary-dark);
    background: var(--primary-light);
    padding: 5px 12px;
    border-radius: var(--radius-tag);
    margin-bottom: 16px;
  }

  .feature-content h3 {
    font-size: 26px;
    line-height: 1.35;
    font-weight: 700;
    color: var(--graphite);
    margin-bottom: 14px;
  }

  .feature-content p {
    font-size: 16px;
    line-height: 1.9;
    color: var(--text-secondary);
    margin-bottom: 20px;
  }

  .feature-list {
    display: grid;
    gap: 12px;
    margin-top: 8px;
  }

  .feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: var(--text);
    line-height: 1.6;
  }

  .feature-list li .icon-check {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .feature-list li .icon-check svg {
    width: 12px;
    height: 12px;
  }

  /* ===== 场景卡片 ===== */
  .scene-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .scene-card {
    background: var(--white);
    border: 1px solid rgba(0, 0, 0, .04);
    border-radius: var(--radius-card);
    padding: 32px 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
  }

  .scene-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), transparent);
    opacity: 0;
    transition: var(--transition);
  }

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

  .scene-card:hover::before {
    opacity: 1;
  }

  .scene-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 24px;
  }

  .scene-card h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--graphite);
    margin-bottom: 12px;
  }

  .scene-card p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 16px;
  }

  .scene-tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
  }

  .scene-tag-list span {
    background: var(--bg-gray);
    color: var(--text-secondary);
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 50px;
    font-weight: 500;
  }

  /* ===== 精选资讯 ===== */
  .news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .news-card {
    background: var(--white);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0, 0, 0, .04);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
  }

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

  .news-thumb {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
    background: var(--bg-gray);
  }

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

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

  .news-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(26, 46, 34, .82);
    backdrop-filter: blur(6px);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: var(--radius-tag);
    letter-spacing: .5px;
  }

  .news-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .news-body h3 {
    font-size: 19px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--graphite);
    margin-bottom: 10px;
    transition: var(--transition);
  }

  .news-body h3 a:hover {
    color: var(--primary);
  }

  .news-summary {
    font-size: 14px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 18px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
  }

  .news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--bg-gray);
    padding-top: 16px;
    margin-top: auto;
  }

  .news-time {
    font-size: 13px;
    color: var(--text-muted);
    font-family: var(--font-num);
  }

  .news-read {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: var(--transition);
  }

  .news-read svg {
    width: 14px;
    height: 14px;
    transition: transform .3s ease;
  }

  .news-read:hover svg {
    transform: translateX(4px);
  }

  /* ===== 分页 ===== */
  .pagination-wrap {
    display: flex;
    justify-content: center;
    margin-top: 48px;
  }

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

  .page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 14px;
    border-radius: var(--radius-btn);
    background: #fff;
    border: 1px solid var(--border);
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    transition: var(--transition);
  }

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

  .page-link.active {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
  }

  .page-link:disabled,
  .page-link.disabled {
    opacity: .45;
    pointer-events: none;
  }

  /* ===== FAQ ===== */
  .faq-wrap {
    max-width: 800px;
    margin: 0 auto;
  }

  .faq-item {
    background: var(--white);
    border-radius: 12px;
    border: 1px solid rgba(0, 0, 0, .04);
    box-shadow: var(--shadow-sm);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
  }

  .faq-item.open {
    box-shadow: var(--shadow-md);
    border-color: rgba(15, 169, 88, .2);
  }

  .faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--graphite);
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
  }

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

  .faq-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform .35s ease;
  }

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

  .faq-icon svg {
    width: 16px;
    height: 16px;
    color: var(--primary);
  }

  .faq-answer {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding: 0 24px;
    transition: max-height .4s ease, opacity .3s ease, padding .3s ease;
  }

  .faq-answer-inner {
    font-size: 15px;
    line-height: 1.9;
    color: var(--text-secondary);
    padding-bottom: 24px;
    border-top: 1px solid var(--bg-gray);
    padding-top: 16px;
  }

  .faq-item.open .faq-answer {
    max-height: 400px;
    opacity: 1;
  }

  /* ===== CTA 下载 ===== */
  .cta-section {
    background: var(--graphite);
    padding: 88px 0;
    position: relative;
    overflow: hidden;
  }

  .cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: url("/assets/images/backpic/back-3.png") no-repeat center/cover;
    opacity: .08;
  }

  .cta-inner {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
  }

  .cta-inner h2 {
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 16px;
  }

  .cta-inner p {
    font-size: 16px;
    color: rgba(255, 255, 255, .75);
    line-height: 1.9;
    margin-bottom: 36px;
  }

  .download-btn-group {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 40px;
  }

  .download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--graphite-dark);
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 12px;
    padding: 12px 24px;
    min-width: 148px;
    justify-content: center;
    transition: var(--transition);
  }

  .download-btn:hover {
    border-color: rgba(255, 255, 255, .4);
    background: rgba(255, 255, 255, .08);
    transform: translateY(-2px);
  }

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

  .download-btn.highlight:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
  }

  .download-btn .btn-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: rgba(255, 255, 255, .12);
  }

  .download-btn .btn-icon svg {
    width: 18px;
    height: 18px;
    color: #fff;
  }

  .download-btn .btn-text {
    text-align: left;
  }

  .download-btn .btn-text .small {
    display: block;
    font-size: 11px;
    opacity: .7;
    line-height: 1.4;
    color: #E0E7E3;
  }

  .download-btn .btn-text .big {
    display: block;
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    line-height: 1.4;
  }

  .qr-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: var(--radius-card);
    padding: 16px 24px;
    max-width: 360px;
    margin: 0 auto;
  }

  .qr-placeholder {
    width: 84px;
    height: 84px;
    background: #fff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .qr-placeholder svg {
    width: 40px;
    height: 40px;
    color: #bbb;
  }

  .qr-info {
    text-align: left;
    color: rgba(255, 255, 255, .8);
    font-size: 14px;
    line-height: 1.8;
  }

  .qr-info strong {
    display: block;
    color: #fff;
    font-size: 16px;
    margin-bottom: 4px;
  }

  /* ===== 页脚 ===== */
  .site-footer {
    background: var(--graphite-dark);
    padding: 72px 0 0;
    color: rgba(255, 255, 255, .75);
  }

  .site-footer a {
    color: rgba(255, 255, 255, .65);
    transition: var(--transition);
  }

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

  .footer-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr 1fr 1.1fr;
    gap: 48px;
    padding-bottom: 56px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
  }

  .footer-brand .brand-logo {
    color: #fff;
    margin-bottom: 16px;
  }

  .footer-brand p {
    font-size: 14px;
    line-height: 1.9;
    color: rgba(255, 255, 255, .55);
    max-width: 280px;
  }

  .footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
  }

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

  .footer-col ul li a {
    font-size: 14px;
    line-height: 1.6;
  }

  .footer-col ul li a:hover {
    padding-left: 4px;
  }

  .footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: rgba(255, 255, 255, .45);
  }

  .footer-bottom .copyright {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
  }

  .footer-bottom .icp a {
    color: rgba(255, 255, 255, .45);
  }

  .footer-bottom .icp a:hover {
    color: rgba(255, 255, 255, .85);
  }

  /* ===== 响应式 ===== */
  @media (max-width: 1024px) {
    .nav-container {
      padding: 0 16px;
    }

    .search-box {
      width: 150px;
    }

    .main-nav {
      gap: 0;
    }

    .nav-link {
      padding: 8px 12px;
      font-size: 14px;
    }

    .hero-inner {
      grid-template-columns: 1fr;
      gap: 48px;
    }

    .hero-title {
      font-size: 38px;
    }

    .page-hero {
      padding: 130px 0 64px;
    }

    .feature-row {
      gap: 36px;
    }

    .stats-grid {
      gap: 16px;
    }

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

    .section {
      --sp-section: 64px;
    }
  }

  @media (max-width: 768px) {
    .nav-container {
      height: 64px;
    }

    .main-nav,
    .search-box {
      display: none;
    }

    .burger-btn {
      display: flex;
    }

    .mobile-nav {
      display: block;
    }

    .btn-download {
      padding: 0 16px;
    }

    .page-hero {
      padding: 110px 0 48px;
    }

    .hero-title {
      font-size: 32px;
    }

    .hero-actions {
      flex-direction: column;
      align-items: stretch;
    }

    .hero-actions .btn-lg {
      width: 100%;
    }

    .hero-tags {
      gap: 8px;
    }

    .stats-grid {
      grid-template-columns: repeat(2, 1fr);
      gap: 24px 16px;
    }

    .stat-number {
      font-size: 36px;
    }

    .features-alt {
      gap: 56px;
    }

    .feature-row {
      grid-template-columns: 1fr;
      gap: 28px;
    }

    .feature-row.reverse .feature-img {
      order: 0;
    }

    .section-title {
      font-size: 28px;
    }

    .scene-grid {
      grid-template-columns: 1fr;
    }

    .news-grid {
      grid-template-columns: 1fr;
    }

    .cta-section {
      padding: 64px 0;
    }

    .cta-inner h2 {
      font-size: 28px;
    }

    .download-btn-group {
      flex-direction: column;
      align-items: stretch;
      padding: 0 24px;
    }

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

    .qr-wrap {
      flex-direction: row;
      max-width: 100%;
      margin: 0 16px;
    }

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

    .footer-brand {
      grid-column: 1 / -1;
    }

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

    .footer-bottom .copyright {
      justify-content: center;
    }

    .section {
      --sp-section: 48px;
    }
  }

  @media (max-width: 520px) {
    .nav-actions .btn-download span {
      display: none;
    }

    .nav-actions .btn-download {
      width: 40px;
      padding: 0;
      justify-content: center;
    }

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

    .hero-title {
      font-size: 28px;
    }

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

    .section-title {
      font-size: 24px;
    }

    .section-head {
      margin-bottom: 32px;
    }

    .news-body {
      padding: 20px;
    }

    .faq-question {
      padding: 18px 20px;
      font-size: 15px;
    }

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

    .footer-brand {
      grid-column: auto;
    }

    .stats-grid {
      grid-template-columns: 1fr 1fr;
      gap: 20px 12px;
    }

    .stat-number {
      font-size: 30px;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: .01ms !important;
      transition-duration: .01ms !important;
      scroll-behavior: auto !important;
    }
  }

/* roulang page: article */
:root {
            --primary: #0FA958;
            --primary-hover: #0B8544;
            --primary-light: rgba(15, 169, 88, 0.1);
            --ink: #1A2E22;
            --ink-light: #244032;
            --accent: #FF7A45;
            --bg: #FAFAF7;
            --bg-soft: #F0F2EE;
            --text: #1F2937;
            --text-sec: #6B7280;
            --text-mute: #9CA3AF;
            --border: rgba(26, 46, 34, 0.08);
            --radius-card: 16px;
            --radius-btn: 10px;
            --radius-tag: 6px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, .04), 0 8px 24px rgba(0, 0, 0, .06);
            --shadow-lg: 0 2px 6px rgba(0, 0, 0, .06), 0 16px 32px rgba(0, 0, 0, .10);
            --container: 1200px;
            --space-section: 96px;
            --header-h: 72px;
            --font-cn: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: Inter, "SF Pro Display", system-ui;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-cn);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

        input {
            font-family: inherit;
            outline: none;
        }

        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(250, 250, 247, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid transparent;
            transition: border-color .3s, box-shadow .3s;
        }

        .site-header.scrolled {
            border-color: var(--border);
            box-shadow: 0 2px 14px rgba(0, 0, 0, .05);
        }

        .header-inner {
            height: var(--header-h);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: var(--ink);
            white-space: nowrap;
        }

        .brand-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--ink));
            color: #fff;
            font-size: 14px;
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-sec);
            transition: color .2s, background .2s;
        }

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

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            width: 220px;
            height: 40px;
            padding: 0 12px;
            background: var(--bg-soft);
            border-radius: var(--radius-btn);
            border: 1px solid transparent;
            transition: border-color .2s, background .2s;
        }

        .search-box:focus-within {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(15, 169, 88, .12);
        }

        .search-box svg {
            flex-shrink: 0;
            width: 16px;
            height: 16px;
            color: var(--text-mute);
        }

        .search-box input {
            flex: 1;
            min-width: 0;
            border: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
        }

        .search-box input::placeholder {
            color: var(--text-mute);
        }

        .search-box .kbd {
            flex-shrink: 0;
            font-family: var(--font-num);
            font-size: 12px;
            color: var(--text-mute);
            border: 1px solid var(--border);
            border-radius: 5px;
            padding: 1px 6px;
            background: #fff;
        }

        .btn-download {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 20px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            transition: background .2s, transform .2s, box-shadow .2s;
            white-space: nowrap;
        }

        .btn-download:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 14px rgba(15, 169, 88, .25);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--bg-soft);
            color: var(--text);
            transition: background .2s;
        }

        .nav-toggle:hover {
            background: var(--border);
        }

        .nav-toggle svg {
            width: 20px;
            height: 20px;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-h);
            left: 0;
            right: 0;
            z-index: 99;
            background: #fff;
            padding: 20px;
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }

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

        .mobile-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-bottom: 16px;
        }

        .mobile-nav a {
            padding: 12px 14px;
            border-radius: 10px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            transition: background .2s, color .2s;
        }

        .mobile-nav a:hover {
            background: var(--bg-soft);
        }

        .mobile-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .mobile-search {
            display: flex;
            gap: 10px;
            margin-bottom: 14px;
        }

        .mobile-search input {
            flex: 1;
            height: 44px;
            padding: 0 14px;
            border: 1px solid var(--border);
            border-radius: var(--radius-btn);
            background: var(--bg-soft);
            font-size: 14px;
            color: var(--text);
            transition: border-color .2s, background .2s;
        }

        .mobile-search input:focus {
            background: #fff;
            border-color: var(--primary);
        }

        .mobile-cta {
            display: flex;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            height: 44px;
            padding: 0 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            transition: all .2s;
        }

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

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 6px 16px rgba(15, 169, 88, .25);
            transform: translateY(-1px);
        }

        .btn-outline {
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 4px 12px rgba(15, 169, 88, .1);
        }

        .btn-block {
            width: 100%;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-mute);
            padding-top: 28px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-sec);
            transition: color .2s;
        }

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

        .breadcrumb .sep {
            color: #d1d5db;
            font-size: 13px;
        }

        .breadcrumb .current {
            color: var(--text);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 320px;
        }

        /* ===== Article Hero ===== */
        .article-hero {
            padding: 24px 0 36px;
            background: linear-gradient(180deg, rgba(15, 169, 88, .05) 0%, transparent 100%);
            border-bottom: 1px solid var(--border);
        }

        .article-header {
            max-width: 820px;
            margin: 0 auto;
        }

        .article-header h1 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 800;
            color: var(--ink);
            margin: 22px 0 18px;
            letter-spacing: -0.01em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px 18px;
            font-size: 14px;
            color: var(--text-sec);
        }

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

        .meta-item::before {
            content: '';
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--text-mute);
            flex-shrink: 0;
        }

        .meta-item:first-child::before {
            display: none;
        }

        .meta-author {
            color: var(--text);
            font-weight: 500;
        }

        /* ===== Article Body ===== */
        .article-section {
            padding: 40px 0 72px;
        }

        .article-body {
            max-width: 720px;
            margin: 0 auto;
            font-size: 16px;
            line-height: 2;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 28px;
            line-height: 1.4;
            color: var(--ink);
            font-weight: 700;
            margin: 2.2em 0 .8em;
            padding-bottom: .4em;
            border-bottom: 1px solid var(--border);
        }

        .article-body h3 {
            font-size: 20px;
            line-height: 1.5;
            color: var(--ink);
            font-weight: 700;
            margin: 1.8em 0 .6em;
        }

        .article-body p {
            margin-bottom: 1.6em;
        }

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

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

        .article-body blockquote {
            margin: 1.8em 0;
            padding: 1em 1.5em;
            background: var(--primary-light);
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
            color: var(--text-sec);
        }

        .article-body blockquote p {
            margin-bottom: 0;
        }

        .article-body img {
            border-radius: 12px;
            margin: 1.5em auto;
        }

        .article-body figure {
            margin: 1.8em 0;
        }

        .article-body figcaption {
            font-size: 13px;
            color: var(--text-mute);
            text-align: center;
            margin-top: 10px;
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.6em;
            padding-left: 1.5em;
        }

        .article-body ul {
            list-style: disc;
        }

        .article-body ol {
            list-style: decimal;
        }

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

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8em 0;
            font-size: 14px;
        }

        .article-body th {
            background: var(--bg-soft);
            font-weight: 600;
            text-align: left;
        }

        .article-body th,
        .article-body td {
            padding: 10px 14px;
            border: 1px solid var(--border);
        }

        .article-body hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 2.4em 0;
        }

        .article-body code {
            background: var(--bg-soft);
            padding: 2px 6px;
            border-radius: 5px;
            font-size: .9em;
            font-family: var(--font-num);
        }

        /* ===== Article Tags ===== */
        .article-tags {
            max-width: 720px;
            margin: 40px auto 0;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            background: var(--bg-soft);
            border-radius: var(--radius-tag);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-sec);
            transition: background .2s, color .2s;
        }

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

        .article-back {
            max-width: 720px;
            margin: 32px auto 0;
        }

        /* ===== Empty State ===== */
        .article-empty {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            padding: 80px 20px;
        }

        .article-empty .empty-icon {
            font-size: 52px;
            margin-bottom: 16px;
            opacity: .5;
        }

        .article-empty p {
            font-size: 18px;
            color: var(--text-sec);
            margin-bottom: 24px;
        }

        /* ===== Related Section ===== */
        .related-section {
            background: var(--bg-soft);
            padding: var(--space-section) 0;
        }

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

        .section-tag {
            display: inline-block;
            padding: 5px 16px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }

        .section-header h2 {
            font-size: 32px;
            line-height: 1.3;
            color: var(--ink);
            font-weight: 800;
        }

        .section-header p {
            color: var(--text-sec);
            margin-top: 8px;
            font-size: 15px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            display: block;
            background: #fff;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow .3s, transform .3s;
        }

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

        .related-card .card-thumb {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-soft);
        }

        .related-card .card-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s;
        }

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

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

        .related-card .card-body h3 {
            font-size: 16px;
            line-height: 1.5;
            color: var(--ink);
            font-weight: 600;
            margin-bottom: 10px;
            transition: color .2s;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card:hover .card-body h3 {
            color: var(--primary);
        }

        .related-card .time {
            font-size: 13px;
            color: var(--text-mute);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--space-section) 0;
            background:
                linear-gradient(rgba(26, 46, 34, .94), rgba(26, 46, 34, .90)),
                url('/assets/images/backpic/back-2.png') center / cover no-repeat;
        }

        .cta-content {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            color: #fff;
        }

        .cta-content h2 {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, .78);
            margin-bottom: 32px;
            font-size: 16px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 24px;
        }

        .store-btn {
            display: flex;
            align-items: center;
            gap: 10px;
            height: 58px;
            padding: 0 24px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .16);
            border-radius: var(--radius-btn);
            color: #fff;
            transition: background .2s, border-color .2s, transform .2s;
        }

        .store-btn:hover {
            background: rgba(255, 255, 255, .2);
            transform: translateY(-2px);
            border-color: rgba(255, 255, 255, .3);
        }

        .store-btn svg {
            flex-shrink: 0;
            width: 26px;
            height: 26px;
        }

        .store-text {
            text-align: left;
            line-height: 1.25;
        }

        .store-text small {
            display: block;
            font-size: 11px;
            opacity: .75;
        }

        .store-text strong {
            font-size: 16px;
            font-weight: 700;
        }

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

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

        .qr-card {
            display: inline-flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
            padding: 14px 16px;
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
        }

        .qr-card canvas {
            width: 96px;
            height: 96px;
            border-radius: 6px;
        }

        .qr-card span {
            font-size: 13px;
            font-weight: 600;
            color: var(--ink);
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--space-section) 0;
            background: var(--bg);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: 12px;
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: box-shadow .3s;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-lg);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            width: 100%;
            padding: 20px 24px;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink);
            transition: color .2s;
        }

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

        .faq-icon {
            flex: 0 0 28px;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--bg-soft);
            border-radius: 50%;
            font-size: 18px;
            font-weight: 400;
            color: var(--text-sec);
            transition: transform .3s, background .3s, color .3s;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
            padding: 0 24px;
            font-size: 14px;
            line-height: 1.85;
            color: var(--text-sec);
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding-bottom: 24px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--ink);
            color: rgba(255, 255, 255, .72);
            padding: 64px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
        }

        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .6);
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 600;
        }

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

        .footer-col a {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            transition: color .2s;
        }

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

        .footer-bottom {
            margin-top: 48px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, .1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, .5);
        }

        .copyright {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .footer-bottom .icp a {
            color: rgba(255, 255, 255, .5);
            transition: color .2s;
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1023px) {
            :root {
                --space-section: 64px;
                --header-h: 68px;
            }

            .container {
                padding: 0 20px;
            }

            .main-nav,
            .search-box,
            .btn-download {
                display: none;
            }

            .nav-toggle {
                display: flex;
            }

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

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

            .article-header h1 {
                font-size: 32px;
            }

            .cta-content h2 {
                font-size: 30px;
            }
        }

        @media (max-width: 767px) {
            :root {
                --space-section: 48px;
                --header-h: 64px;
            }

            .container {
                padding: 0 16px;
            }

            .brand-text {
                font-size: 18px;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 13px;
            }

            .related-grid {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .article-header h1 {
                font-size: 28px;
                line-height: 1.35;
            }

            .article-meta {
                font-size: 13px;
                gap: 6px 14px;
            }

            .article-body {
                font-size: 15px;
            }

            .article-body h2 {
                font-size: 24px;
            }

            .article-body h3 {
                font-size: 18px;
            }

            .article-body table {
                font-size: 13px;
            }

            .article-body th,
            .article-body td {
                padding: 8px 10px;
            }

            .cta-content h2 {
                font-size: 24px;
            }

            .cta-content p {
                font-size: 15px;
            }

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

            .qr-card {
                width: 100%;
            }

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

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

            .faq-question {
                font-size: 14px;
                padding: 18px 18px;
            }

            .faq-answer {
                padding: 0 18px;
                font-size: 13px;
            }

            .faq-item.open .faq-answer {
                padding-bottom: 18px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .copyright {
                justify-content: center;
            }

            .breadcrumb .current {
                max-width: 180px;
            }
        }

        @media (max-width: 520px) {
            .article-header h1 {
                font-size: 24px;
            }

            .article-back .btn {
                width: 100%;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .store-btn {
                height: 54px;
            }
        }