/* roulang page: index */
:root {
        --primary: #0F766E;
        --primary-light: #0D9488;
        --primary-dark: #134E4A;
        --accent: #F59E0B;
        --accent-light: #FCD34D;
        --bg: #FAFAF7;
        --card-bg: #FFFFFF;
        --text: #0F172A;
        --text-secondary: #475569;
        --border: #E2E8F0;
        --radius-lg: 1.5rem;
        --radius-md: 0.75rem;
        --shadow-card: 0 16px 40px -20px rgba(15,118,110,.18);
        --shadow-hover: 0 24px 50px -20px rgba(15,118,110,.28);
        --gradient-main: linear-gradient(135deg, #0D9488, #0F766E);
        --gradient-hero: linear-gradient(135deg, #F0FDFA, #FFFFFF);
    }
    
    *,
    *::before,
    *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }
    
    html {
        scroll-behavior: smooth;
    }
    
    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        background-color: var(--bg);
        color: var(--text);
        line-height: 1.75;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    
    a {
        color: inherit;
        text-decoration: none;
    }
    
    button {
        border: none;
        background: none;
        cursor: pointer;
        font-family: inherit;
    }
    
    input,
    textarea {
        font-family: inherit;
    }
    
    .container {
        max-width: 1280px;
        margin: 0 auto;
        padding-left: 24px;
        padding-right: 24px;
    }
    
    @media (max-width: 768px) {
        .container {
            padding-left: 16px;
            padding-right: 16px;
        }
    }
    
    .text-gradient {
        background: linear-gradient(135deg, #0D9488, #0F766E);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    
    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: linear-gradient(135deg, #0D9488, #0F766E);
        color: #fff;
        font-weight: 600;
        padding: 14px 32px;
        border-radius: 9999px;
        font-size: 15px;
        line-height: 1.4;
        letter-spacing: 0.02em;
        transition: all 0.3s ease;
        box-shadow: 0 8px 24px -8px rgba(15, 118, 110, 0.45);
        border: 1px solid rgba(255, 255, 255, 0.12);
    }
    
    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 14px 32px -10px rgba(15, 118, 110, 0.55);
        filter: brightness(1.05);
    }
    
    .btn-primary:active {
        transform: translateY(0);
        box-shadow: 0 4px 16px -6px rgba(15, 118, 110, 0.4);
    }
    
    .btn-primary:focus-visible {
        outline: 2px solid #0D9488;
        outline-offset: 3px;
    }
    
    .btn-secondary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        background: #FFFFFF;
        color: var(--primary);
        font-weight: 600;
        padding: 14px 32px;
        border-radius: 9999px;
        font-size: 15px;
        line-height: 1.4;
        letter-spacing: 0.02em;
        transition: all 0.3s ease;
        border: 1.5px solid #99C7C3;
        box-shadow: 0 2px 8px -2px rgba(15, 118, 110, 0.08);
    }
    
    .btn-secondary:hover {
        background: #F0FDFA;
        border-color: var(--primary);
        transform: translateY(-2px);
        box-shadow: 0 8px 20px -8px rgba(15, 118, 110, 0.18);
    }
    
    .btn-secondary:active {
        transform: translateY(0);
    }
    
    .btn-secondary:focus-visible {
        outline: 2px solid #0D9488;
        outline-offset: 3px;
    }
    
    .section {
        padding: 84px 0;
    }
    
    @media (max-width: 768px) {
        .section {
            padding: 48px 0;
        }
    }
    
    .section-title {
        font-size: 30px;
        font-weight: 800;
        letter-spacing: -0.01em;
        line-height: 1.3;
        color: var(--text);
    }
    
    .section-subtitle {
        font-size: 15px;
        color: var(--text-secondary);
        max-width: 560px;
        line-height: 1.7;
    }
    
    .badge-tag {
        display: inline-flex;
        align-items: center;
        gap: 4px;
        background: #F0FDFA;
        color: var(--primary);
        font-size: 13px;
        font-weight: 600;
        letter-spacing: 0.04em;
        padding: 4px 14px;
        border-radius: 9999px;
        border: 1px solid rgba(15, 118, 110, 0.15);
    }
    
    .card {
        background: var(--card-bg);
        border-radius: var(--radius-lg);
        border: 1px solid var(--border);
        box-shadow: var(--shadow-card);
        transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }
    
    .card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-hover);
    }
    
    .stat-number {
        font-variant-numeric: tabular-nums;
        font-feature-settings: "tnum";
    }
    
    header {
        position: sticky;
        top: 0;
        z-index: 50;
        background-color: rgba(255, 255, 255, 0.92);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(226, 232, 240, 0.7);
        transition: box-shadow 0.3s ease;
    }
    
    header.scrolled {
        box-shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
    }
    
    .nav-link {
        position: relative;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-secondary);
        padding: 6px 14px;
        border-radius: 9999px;
        transition: color 0.25s ease, background 0.25s ease;
    }
    
    .nav-link:hover {
        color: var(--primary);
        background: rgba(15, 118, 110, 0.06);
    }
    
    .nav-link.active {
        color: var(--primary);
        font-weight: 600;
    }
    
    .nav-link.active::after {
        content: "";
        position: absolute;
        bottom: -2px;
        left: 50%;
        transform: translateX(-50%);
        width: 16px;
        height: 3px;
        border-radius: 3px;
        background: var(--primary);
    }
    
    .nav-link:focus-visible {
        outline: 2px solid var(--primary);
        outline-offset: 3px;
    }
    
    .mobile-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 320px;
        height: 100vh;
        background: #fff;
        z-index: 60;
        transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        padding: 80px 24px 24px;
        box-shadow: -24px 0 60px rgba(15, 23, 42, 0.12);
        overflow-y: auto;
    }
    
    .mobile-nav.open {
        right: 0;
    }
    
    .mobile-nav-backdrop {
        position: fixed;
        inset: 0;
        background: rgba(15, 23, 42, 0.45);
        backdrop-filter: blur(4px);
        z-index: 55;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease;
    }
    
    .mobile-nav-backdrop.open {
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-nav-link {
        display: block;
        padding: 14px 12px;
        font-size: 16px;
        font-weight: 500;
        color: var(--text);
        border-radius: 12px;
        transition: all 0.25s ease;
        border-bottom: 1px solid #F1F5F9;
    }
    
    .mobile-nav-link:hover,
    .mobile-nav-link.active {
        color: var(--primary);
        background: #F0FDFA;
    }
    
    .hero-card {
        background: var(--gradient-hero);
        border-radius: 2rem;
        border: 1px solid rgba(226, 232, 240, 0.8);
        box-shadow: 0 24px 64px -24px rgba(15, 118, 110, 0.18);
        position: relative;
        overflow: hidden;
    }
    
    .hero-card::before {
        content: "";
        position: absolute;
        top: -80px;
        right: -80px;
        width: 320px;
        height: 320px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(13, 148, 136, 0.14), transparent 70%);
        pointer-events: none;
    }
    
    .hero-card::after {
        content: "";
        position: absolute;
        bottom: -40px;
        left: 30%;
        width: 240px;
        height: 240px;
        border-radius: 50%;
        background: radial-gradient(circle, rgba(245, 158, 11, 0.08), transparent 70%);
        pointer-events: none;
    }
    
    .feature-item {
        display: flex;
        align-items: flex-start;
        gap: 16px;
        padding: 24px;
        background: #fff;
        border-radius: 1.25rem;
        border: 1px solid var(--border);
        transition: all 0.3s ease;
    }
    
    .feature-item:hover {
        box-shadow: var(--shadow-card);
        transform: translateY(-4px);
        border-color: rgba(15, 118, 110, 0.25);
    }
    
    .feature-icon {
        flex-shrink: 0;
        width: 48px;
        height: 48px;
        border-radius: 16px;
        background: #F0FDFA;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        font-size: 20px;
    }
    
    .screenshot-track {
        display: flex;
        gap: 24px;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        padding-bottom: 24px;
        -webkit-overflow-scrolling: touch;
    }
    
    .screenshot-track::-webkit-scrollbar {
        height: 6px;
    }
    
    .screenshot-track::-webkit-scrollbar-track {
        background: #F1F5F9;
        border-radius: 3px;
    }
    
    .screenshot-track::-webkit-scrollbar-thumb {
        background: #CBD5E1;
        border-radius: 3px;
    }
    
    .screenshot-card {
        flex: 0 0 320px;
        scroll-snap-align: center;
        background: #fff;
        border-radius: 1.25rem;
        border: 1px solid var(--border);
        overflow: hidden;
        box-shadow: 0 8px 24px -12px rgba(15, 118, 110, 0.12);
        transition: all 0.3s ease;
    }
    
    .screenshot-card:hover {
        transform: scale(1.02) rotate(0deg) !important;
        box-shadow: var(--shadow-hover);
    }
    
    .faq-item {
        border: 1px solid var(--border);
        border-radius: 1rem;
        background: #fff;
        transition: all 0.3s ease;
        overflow: hidden;
    }
    
    .faq-item.open {
        border-color: var(--primary);
        border-left: 3px solid var(--accent);
        box-shadow: var(--shadow-card);
    }
    
    .faq-question {
        padding: 18px 24px;
        font-size: 15px;
        font-weight: 600;
        color: var(--text);
        display: flex;
        align-items: center;
        justify-content: space-between;
        cursor: pointer;
        gap: 16px;
        transition: color 0.25s ease;
    }
    
    .faq-question:hover {
        color: var(--primary);
    }
    
    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease, padding 0.4s ease;
    }
    
    .faq-answer-inner {
        padding: 0 24px 20px;
        color: var(--text-secondary);
        font-size: 14px;
        line-height: 1.8;
    }
    
    .faq-icon {
        flex-shrink: 0;
        width: 28px;
        height: 28px;
        border-radius: 50%;
        background: #F0FDFA;
        display: flex;
        align-items: center;
        justify-content: center;
        color: var(--primary);
        font-size: 14px;
        font-weight: 700;
        transition: transform 0.35s ease, background 0.3s ease;
    }
    
    .faq-item.open .faq-icon {
        transform: rotate(45deg);
        background: var(--primary);
        color: #fff;
    }
    
    .news-list-item {
        padding: 20px 24px;
        border-radius: 1rem;
        border: 1px solid var(--border);
        background: #fff;
        transition: all 0.3s ease;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 16px;
        margin-bottom: 12px;
    }
    
    .news-list-item:hover {
        border-color: rgba(15, 118, 110, 0.3);
        box-shadow: var(--shadow-card);
        transform: translateX(4px);
    }
    
    .footer {
        background: var(--primary-dark);
        color: #E2E8F0;
        padding: 64px 0 32px;
    }
    
    .footer a {
        color: #BCD5D2;
        transition: color 0.25s ease;
    }
    
    .footer a:hover {
        color: #fff;
        text-decoration: underline;
    }
    
    .footer a:focus-visible {
        outline: 2px solid #fff;
        outline-offset: 3px;
    }
    
    .footer-title {
        font-size: 16px;
        font-weight: 600;
        color: #fff;
        margin-bottom: 16px;
    }
    
    .footer-links li {
        margin-bottom: 10px;
        font-size: 14px;
    }
    
    .back-to-top {
        position: fixed;
        bottom: 24px;
        right: 24px;
        width: 44px;
        height: 44px;
        border-radius: 50%;
        background: var(--gradient-main);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: 0 8px 24px rgba(15, 118, 110, 0.3);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, transform 0.3s ease;
        z-index: 40;
        font-size: 18px;
    }
    
    .back-to-top.show {
        opacity: 1;
        visibility: visible;
    }
    
    .back-to-top:hover {
        transform: translateY(-4px);
    }
    
    .back-to-top:focus-visible {
        outline: 2px solid #fff;
        outline-offset: 3px;
    }
    
    @media (max-width: 768px) {
        .section-title {
            font-size: 24px;
        }
        
        .screenshot-card {
            flex-basis: 260px;
        }
    }
    
    @media (max-width: 520px) {
        .hero-card {
            border-radius: 1.5rem;
        }
        
        .stat-number {
            font-size: 28px !important;
        }
        
        .feature-item {
            padding: 16px;
        }
        
        .btn-primary,
        .btn-secondary {
            width: 100%;
            justify-content: center;
        }
    }
    
    .pulse-dot {
        display: inline-block;
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #10B981;
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
        animation: pulse 2s infinite;
    }
    
    @keyframes pulse {
        0% {
            box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
        }
        70% {
            box-shadow: 0 0 0 8px rgba(16, 185, 129, 0);
        }
        100% {
            box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
        }
    }
    
    .tap-highlight {
        -webkit-tap-highlight-color: transparent;
    }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #0F766E;
            --primary-light: #0D9488;
            --primary-dark: #134E4A;
            --accent: #F59E0B;
            --bg: #FAFAF7;
            --card: #FFFFFF;
            --text: #0F172A;
            --text-2: #475569;
            --border: #E2E8F0;
            --shadow-card: 0 16px 40px -20px rgba(15, 118, 110, .18);
            --shadow-hover: 0 24px 50px -20px rgba(15, 118, 110, .28);
            --radius-lg: 1.5rem;
            --radius-md: 0.75rem;
        }

        /* ============ Reset 与基础 ============ */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--bg);
            color: var(--text);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: all .2s ease;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }

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

        /* ============ Header 导航 ============ */
        #siteHeader {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(226, 232, 240, .7);
            transition: box-shadow .3s ease;
        }
        #siteHeader.scrolled {
            box-shadow: 0 4px 24px rgba(15, 23, 42, .06);
        }
        .nav-link {
            position: relative;
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: #334155;
            border-radius: 9999px;
            transition: color .2s ease, background .2s ease;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(15, 118, 110, .05);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: 2px;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            border-radius: 99px;
            background: var(--primary);
        }

        /* ============ 按钮 ============ */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #0D9488, #0F766E);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 9999px;
            box-shadow: 0 8px 24px -8px rgba(15, 118, 110, .5);
            transition: all .25s ease;
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 28px -8px rgba(15, 118, 110, .55);
            filter: brightness(1.05);
        }
        .btn-primary:focus-visible,
        .btn-secondary:focus-visible,
        .nav-link:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 9999px;
            border: 1.5px solid rgba(15, 118, 110, .3);
            transition: all .25s ease;
        }
        .btn-secondary:hover {
            border-color: var(--primary);
            background: rgba(15, 118, 110, .04);
            transform: translateY(-2px);
        }
        .btn-lg {
            padding: 16px 38px;
            font-size: 16px;
        }

        /* ============ 移动端抽屉 ============ */
        .mobile-menu {
            position: fixed;
            top: 0;
            right: -300px;
            width: 280px;
            height: 100%;
            background: #fff;
            z-index: 120;
            padding: 80px 24px 32px;
            transition: right .35s ease;
            box-shadow: -8px 0 30px rgba(15, 23, 42, .1);
            overflow-y: auto;
        }
        .mobile-menu.open {
            right: 0;
        }
        .mobile-menu-backdrop {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, .4);
            z-index: 110;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease;
        }
        .mobile-menu-backdrop.open {
            opacity: 1;
            visibility: visible;
        }
        .mobile-link {
            display: block;
            padding: 12px 16px;
            font-size: 16px;
            font-weight: 500;
            color: #334155;
            border-radius: 12px;
            transition: all .2s;
        }
        .mobile-link:hover {
            background: rgba(15, 118, 110, .06);
            color: var(--primary);
        }
        .mobile-link.active {
            color: var(--primary);
            background: rgba(15, 118, 110, .08);
            font-weight: 600;
        }
        .tap-highlight {
            -webkit-tap-highlight-color: transparent;
        }

        /* ============ 页面 Hero ============ */
        .page-hero {
            padding: 60px 0 40px;
            position: relative;
        }
        .hero-card {
            border-radius: 2rem;
            padding: 46px 44px;
            background:
                linear-gradient(135deg, rgba(240, 253, 250, .95), rgba(255, 255, 255, .96)),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border: 1px solid rgba(15, 118, 110, .1);
            box-shadow: 0 20px 50px -20px rgba(15, 118, 110, .2);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 28px;
        }
        .hero-card::before {
            content: '';
            position: absolute;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(13, 148, 136, .14), transparent 70%);
            top: -120px;
            right: -80px;
            pointer-events: none;
        }
        .hero-content {
            flex: 1 1 480px;
            position: relative;
            z-index: 2;
        }
        .hero-visual {
            flex: 0 0 340px;
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(15, 118, 110, .1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 9999px;
            letter-spacing: .06em;
            margin-bottom: 16px;
        }
        .hero-card h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.01em;
            color: #0F172A;
            margin-bottom: 14px;
        }
        .hero-card h1 span {
            color: var(--primary);
        }
        .hero-card p {
            font-size: 16px;
            color: var(--text-2);
            max-width: 560px;
            line-height: 1.75;
            margin-bottom: 24px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        /* ============ 通用板块 ============ */
        .section {
            padding: 70px 0;
        }
        .section-title-wrap {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title-wrap .sub-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: .08em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: #0F172A;
        }
        .section-desc {
            margin-top: 12px;
            font-size: 16px;
            color: var(--text-2);
            max-width: 680px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ============ 卡片通用 ============ */
        .card {
            background: var(--card);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(226, 232, 240, .8);
            padding: 28px;
            box-shadow: var(--shadow-card);
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .icon-badge-circle {
            width: 52px;
            height: 52px;
            border-radius: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(13, 148, 136, .12), rgba(15, 118, 110, .08));
            color: var(--primary);
            font-size: 22px;
            margin-bottom: 16px;
        }

        /* ============ 导读卡 ============ */
        .intro-card-grad {
            background: linear-gradient(135deg, #0F766E, #134E4A);
            border-radius: 2rem;
            padding: 40px;
            color: #E2E8F0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 32px;
            box-shadow: 0 24px 60px -20px rgba(15, 118, 110, .45);
            position: relative;
            overflow: hidden;
        }
        .intro-card-grad::after {
            content: '';
            position: absolute;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, .08), transparent 70%);
            bottom: -160px;
            right: 80px;
            pointer-events: none;
        }
        .intro-content {
            flex: 1 1 460px;
            position: relative;
            z-index: 2;
        }
        .intro-content h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.3;
        }
        .intro-content p {
            color: #BCD5D2;
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 18px;
        }
        .intro-checklist {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .intro-checklist li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: #E2E8F0;
            font-size: 14px;
        }
        .intro-checklist li i {
            color: #F59E0B;
            margin-top: 3px;
            font-size: 13px;
        }
        .intro-cover {
            flex: 0 0 320px;
            position: relative;
            z-index: 2;
            border-radius: 1.5rem;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, .25);
        }
        .intro-cover img {
            width: 100%;
            height: 260px;
            object-fit: cover;
        }

        /* ============ 编号卡 ============ */
        .num-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .num-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid rgba(226, 232, 240, .8);
            box-shadow: var(--shadow-card);
            transition: transform .3s ease, box-shadow .3s ease;
            position: relative;
        }
        .num-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .num-card .num {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            background: rgba(15, 118, 110, .08);
            width: 40px;
            height: 40px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            letter-spacing: .02em;
        }
        .num-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #0F172A;
        }
        .num-card p {
            font-size: 15px;
            color: var(--text-2);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .num-card a {
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .num-card a:hover {
            text-decoration: underline;
        }

        /* ============ 流程步骤 ============ */
        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 18px;
        }
        .step-item {
            text-align: center;
            padding: 24px 16px;
            background: #fff;
            border-radius: 1.25rem;
            border: 1px solid rgba(226, 232, 240, .8);
            box-shadow: var(--shadow-card);
            position: relative;
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-dot {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            border-radius: 20px;
            background: linear-gradient(135deg, #14B8A6, #0F766E);
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 20px -6px rgba(15, 118, 110, .4);
        }
        .step-item h4 {
            font-size: 15px;
            font-weight: 700;
            color: #0F172A;
            margin-bottom: 6px;
        }
        .step-item p {
            font-size: 13px;
            color: var(--text-2);
            line-height: 1.6;
        }
        .step-line {
            display: none;
        }

        /* ============ 相关资源列表 ============ */
        .resource-wrap {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .resource-list {
            background: #fff;
            border-radius: var(--radius-lg);
            border: 1px solid rgba(226, 232, 240, .8);
            box-shadow: var(--shadow-card);
            padding: 28px;
            display: flex;
            flex-direction: column;
        }
        .resource-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid #F1F5F9;
        }
        .resource-item:last-child {
            border-bottom: none;
        }
        .resource-item .r-icon {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            border-radius: 12px;
            background: rgba(15, 118, 110, .08);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
        }
        .resource-item .r-content {
            flex: 1;
        }
        .resource-item .r-content h4 {
            font-size: 15px;
            font-weight: 600;
            color: #0F172A;
            margin-bottom: 2px;
        }
        .resource-item .r-content p {
            font-size: 13px;
            color: var(--text-2);
        }
        .resource-side {
            background: linear-gradient(135deg, rgba(13, 148, 136, .08), rgba(15, 118, 110, .04));
            border-radius: var(--radius-lg);
            border: 1px solid rgba(15, 118, 110, .12);
            padding: 28px;
            position: sticky;
            top: 90px;
        }
        .resource-side h3 {
            font-size: 19px;
            font-weight: 700;
            color: #0F172A;
            margin-bottom: 14px;
        }
        .resource-side p {
            font-size: 14px;
            color: var(--text-2);
            margin-bottom: 18px;
        }
        .resource-side .tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .resource-side .tag {
            background: #fff;
            border: 1px solid rgba(15, 118, 110, .2);
            color: var(--primary);
            font-size: 13px;
            font-weight: 500;
            padding: 5px 14px;
            border-radius: 9999px;
            transition: all .2s;
        }
        .resource-side .tag:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ============ FAQ ============ */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: #fff;
            border-radius: 1.25rem;
            border: 1px solid rgba(226, 232, 240, .8);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: border-color .3s ease;
        }
        .faq-item.active {
            border-left: 4px solid var(--accent);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: #0F172A;
            background: transparent;
            transition: color .2s;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 14px;
            color: var(--primary);
            transition: transform .3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 22px;
            font-size: 15px;
            color: var(--text-2);
            line-height: 1.75;
        }

        /* ============ CTA ============ */
        .cta-section {
            padding: 70px 0;
        }
        .cta-card {
            background: linear-gradient(135deg, #0F766E, #134E4A);
            border-radius: 2rem;
            padding: 52px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: 0 30px 60px -20px rgba(15, 118, 110, .5);
        }
        .cta-card::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, .1), transparent 70%);
            top: -180px;
            left: -100px;
        }
        .cta-card h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }
        .cta-card p {
            color: #BCD5D2;
            font-size: 16px;
            max-width: 600px;
            margin: 0 auto 30px;
            position: relative;
            z-index: 2;
        }
        .cta-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: center;
            position: relative;
            z-index: 2;
        }
        .cta-btns .btn-white {
            background: #fff;
            color: var(--primary);
            font-weight: 600;
            padding: 14px 34px;
            border-radius: 9999px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, .12);
            transition: all .25s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-btns .btn-white:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 26px rgba(0, 0, 0, .16);
        }
        .cta-btns .btn-ghost {
            background: rgba(255, 255, 255, .08);
            border: 1.5px solid rgba(255, 255, 255, .4);
            color: #fff;
            font-weight: 600;
            padding: 14px 34px;
            border-radius: 9999px;
            transition: all .25s;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-btns .btn-ghost:hover {
            background: rgba(255, 255, 255, .15);
            border-color: #fff;
            transform: translateY(-2px);
        }
        .cta-meta {
            margin-top: 22px;
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
            position: relative;
            z-index: 2;
        }

        /* ============ Footer ============ */
        .footer {
            background: var(--primary-dark);
            color: #E2E8F0;
            padding: 64px 0 28px;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: .02em;
        }
        .footer-links li {
            margin-bottom: 8px;
        }
        .footer-links a {
            font-size: 14px;
            color: #BCD5D2;
            transition: color .2s ease, padding-left .2s ease;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .steps-wrap {
                grid-template-columns: repeat(3, 1fr);
                gap: 14px;
            }
            .resource-wrap {
                grid-template-columns: 1fr;
            }
            .resource-side {
                position: static;
            }
        }
        @media (max-width: 768px) {
            .hero-card {
                padding: 32px 24px;
            }
            .hero-card h1 {
                font-size: 28px;
            }
            .hero-visual {
                flex-basis: 100%;
            }
            .section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .num-card-grid {
                grid-template-columns: 1fr;
            }
            .intro-card-grad {
                padding: 28px 24px;
            }
            .intro-cover {
                flex-basis: 100%;
            }
            .intro-cover img {
                height: 200px;
            }
            .steps-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
            .cta-card {
                padding: 36px 24px;
            }
            .cta-card h2 {
                font-size: 26px;
            }
        }
        @media (max-width: 520px) {
            .steps-wrap {
                grid-template-columns: 1fr;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .cta-btns {
                flex-direction: column;
                width: 100%;
            }
            .cta-btns .btn-white,
            .cta-btns .btn-ghost {
                width: 100%;
                justify-content: center;
            }
            .section-title-wrap {
                margin-bottom: 32px;
            }
        }

/* roulang page: article */
:root {
        --primary: #0F766E;
        --primary-light: #0D9488;
        --primary-dark: #134E4A;
        --accent: #F59E0B;
        --bg: #FAFAF7;
        --text: #0F172A;
        --text-secondary: #475569;
        --border: #E2E8F0;
        --radius-lg: 1.5rem;
        --radius-full: 9999px;
        --shadow-card: 0 16px 40px -20px rgba(15,118,110,.18);
        --shadow-card-hover: 0 24px 50px -20px rgba(15,118,110,.28);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
        font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        background-color: var(--bg);
        color: var(--text);
        line-height: 1.75;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
    }
    a { text-decoration: none; color: inherit; transition: color .2s; }
    img { max-width: 100%; display: block; }
    button { cursor: pointer; font-family: inherit; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
    @media (max-width: 640px) {
        .container { padding: 0 16px; }
    }

    /* ===== 导航 ===== */
    #siteHeader {
        position: sticky;
        top: 0;
        z-index: 50;
        background: rgba(255,255,255,.95);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(226,232,240,.6);
        transition: box-shadow .3s;
    }
    #siteHeader.scrolled { box-shadow: 0 4px 24px rgba(15,23,42,.06); }
    .nav-link {
        display: inline-flex;
        align-items: center;
        padding: 8px 14px;
        border-radius: 9999px;
        font-size: 14px;
        font-weight: 500;
        color: #475569;
        position: relative;
        transition: all .25s;
    }
    .nav-link:hover { color: var(--primary); background: rgba(15,118,110,.06); }
    .nav-link.active { color: var(--primary); font-weight: 600; }
    .nav-link.active::after {
        content: "";
        position: absolute;
        bottom: 2px;
        left: 50%;
        transform: translateX(-50%);
        width: 4px;
        height: 4px;
        border-radius: 50%;
        background: var(--primary);
    }
    .btn-primary {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 12px 24px;
        border-radius: var(--radius-full);
        background: linear-gradient(135deg, #0D9488, #0F766E);
        color: #fff;
        font-size: 14px;
        font-weight: 600;
        border: none;
        transition: all .25s;
        box-shadow: 0 8px 20px -8px rgba(15,118,110,.4);
    }
    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 12px 24px -8px rgba(15,118,110,.5);
        color: #fff;
    }
    .btn-primary:active { transform: translateY(0); }
    .btn-primary:focus-visible { outline: 2px solid var(--primary-light); outline-offset: 2px; }

    /* ===== 移动端菜单 ===== */
    #mobileMenu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100%;
        background: #fff;
        z-index: 100;
        transition: right .3s ease;
        box-shadow: -8px 0 30px rgba(0,0,0,.1);
        padding: 80px 24px 40px;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    #mobileMenu.open { right: 0; }
    #menuOverlay {
        position: fixed;
        top: 0; left: 0; width: 100%; height: 100%;
        background: rgba(15,23,42,.4);
        z-index: 99;
        opacity: 0;
        visibility: hidden;
        transition: all .3s;
    }
    #menuOverlay.open { opacity: 1; visibility: visible; }
    .mobile-link {
        padding: 14px 16px;
        border-radius: 12px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text);
        transition: all .2s;
    }
    .mobile-link:hover { background: rgba(15,118,110,.06); color: var(--primary); }
    .mobile-link.active { background: rgba(15,118,110,.1); color: var(--primary); font-weight: 600; }

    /* ===== 面包屑 ===== */
    .breadcrumb {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 6px;
        font-size: 14px;
        color: #64748b;
        padding: 16px 0;
    }
    .breadcrumb a { color: #64748b; }
    .breadcrumb a:hover { color: var(--primary); }
    .breadcrumb .sep { color: #cbd5e1; }
    .breadcrumb .current {
        color: var(--primary);
        font-weight: 500;
        max-width: 260px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    /* ===== 文章内容排版 ===== */
    .article-content {
        font-size: 16px;
        line-height: 1.85;
        color: #1E293B;
    }
    .article-content h2 {
        font-size: 24px;
        font-weight: 800;
        margin-top: 40px;
        margin-bottom: 16px;
        padding-bottom: 10px;
        border-bottom: 2px solid rgba(15,118,110,.12);
        color: var(--text);
        letter-spacing: -0.01em;
    }
    .article-content h3 {
        font-size: 20px;
        font-weight: 700;
        margin-top: 32px;
        margin-bottom: 12px;
        color: var(--text);
    }
    .article-content p { margin-bottom: 20px; }
    .article-content ul, .article-content ol { margin-bottom: 20px; padding-left: 24px; }
    .article-content ul li { list-style: disc; margin-bottom: 8px; }
    .article-content ol li { list-style: decimal; margin-bottom: 8px; }
    .article-content blockquote {
        border-left: 4px solid var(--accent);
        background: rgba(245,158,11,.06);
        padding: 16px 20px;
        border-radius: 0 12px 12px 0;
        margin: 24px 0;
        color: var(--text-secondary);
    }
    .article-content a {
        color: var(--primary);
        text-decoration: underline;
        text-underline-offset: 3px;
    }
    .article-content a:hover { color: var(--primary-dark); }
    .article-content img {
        border-radius: var(--radius-lg);
        margin: 24px 0;
        box-shadow: var(--shadow-card);
    }
    .article-content figure { margin: 24px 0; }
    .article-content figcaption {
        text-align: center;
        font-size: 13px;
        color: var(--text-secondary);
        margin-top: 8px;
    }
    .article-content table {
        width: 100%;
        border-collapse: collapse;
        margin: 24px 0;
        font-size: 15px;
    }
    .article-content table th {
        background: rgba(15,118,110,.08);
        font-weight: 600;
        padding: 12px 16px;
        text-align: left;
        border-bottom: 2px solid rgba(15,118,110,.15);
    }
    .article-content table td {
        padding: 12px 16px;
        border-bottom: 1px solid var(--border);
    }
    .article-content code {
        background: rgba(15,118,110,.08);
        padding: 2px 8px;
        border-radius: 6px;
        font-size: 14px;
        font-family: "SF Mono", "Fira Code", monospace;
    }
    .article-content pre {
        background: #0F172A;
        color: #E2E8F0;
        padding: 20px;
        border-radius: 16px;
        overflow-x: auto;
        margin: 24px 0;
    }
    .article-content pre code { background: none; color: inherit; padding: 0; }

    /* ===== 标签 ===== */
    .tag {
        display: inline-flex;
        align-items: center;
        padding: 6px 14px;
        border-radius: 9999px;
        background: rgba(15,118,110,.08);
        color: var(--primary);
        font-size: 13px;
        font-weight: 500;
        transition: all .2s;
        border: 1px solid rgba(15,118,110,.15);
    }
    .tag:hover {
        background: rgba(15,118,110,.15);
        border-color: rgba(15,118,110,.3);
    }

    /* ===== 卡片 ===== */
    .feature-card {
        background: #fff;
        border-radius: 24px;
        padding: 24px;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-card);
        transition: all .3s;
    }
    .feature-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-4px);
    }
    .post-card {
        background: #fff;
        border-radius: 20px;
        padding: 20px;
        border: 1px solid rgba(226,232,240,.8);
        box-shadow: 0 4px 16px -8px rgba(15,23,42,.08);
        transition: all .3s;
        display: block;
    }
    .post-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-4px);
        border-color: rgba(15,118,110,.2);
    }

    /* ===== 上一篇/下一篇 ===== */
    .prev-next-card {
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 16px;
        border-radius: 16px;
        background: #fff;
        border: 1px solid var(--border);
        transition: all .25s;
    }
    .prev-next-card:hover {
        border-color: rgba(15,118,110,.3);
        box-shadow: 0 8px 24px -8px rgba(15,118,110,.15);
        transform: translateX(-2px);
    }
    .prev-next-card.next:hover { transform: translateX(2px); }

    /* ===== 相关推荐 ===== */
    .related-card {
        background: #fff;
        border-radius: 20px;
        overflow: hidden;
        border: 1px solid rgba(226,232,240,.8);
        box-shadow: 0 4px 16px -8px rgba(15,23,42,.08);
        transition: all .3s;
        display: block;
    }
    .related-card:hover {
        box-shadow: var(--shadow-card-hover);
        transform: translateY(-4px);
        border-color: rgba(15,118,110,.2);
    }

    /* ===== 页脚 ===== */
    .footer {
        background: #134E4A;
        color: #E2E8F0;
        padding: 64px 0 24px;
        margin-top: 80px;
    }
    .footer-title {
        color: #fff;
        font-size: 14px;
        font-weight: 600;
        margin-bottom: 16px;
        letter-spacing: .05em;
    }
    .footer-links {
        list-style: none;
        padding: 0;
        display: flex;
        flex-direction: column;
        gap: 8px;
    }
    .footer-links a {
        color: #BCD5D2;
        font-size: 14px;
        transition: color .2s;
    }
    .footer-links a:hover { color: #fff; }

    /* ===== 通用 ===== */
    .section-padding { padding: 64px 0; }
    @media (min-width: 768px) {
        .section-padding { padding: 80px 0; }
    }
    .card-shadow { box-shadow: var(--shadow-card); }
    a:focus-visible, button:focus-visible {
        outline: 2px solid var(--primary-light);
        outline-offset: 2px;
        border-radius: 4px;
    }

    /* ===== 动画 ===== */
    @keyframes fadeUp {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }
    .animate-fade-up { animation: fadeUp .6s ease both; }

    @media (max-width: 768px) {
        .breadcrumb .current { max-width: 180px; }
    }