:root {
            --bg: #fafbfd;
            --bg-soft: #f5f7fb;
            --bg-section: #eef1f8;
            --surface: #ffffff;
            --border: #dde3ed;
            --border-light: #e8ecf4;
            --primary: #4F46E5;
            --primary-hover: #4338CA;
            --primary-soft: rgba(79, 70, 229, 0.09);
            --primary-glow: rgba(79, 70, 229, 0.2);
            --mint: #06B6D4;
            --mint-soft: rgba(6, 182, 212, 0.09);
            --coral: #8B5CF6;
            --coral-soft: rgba(139, 92, 246, 0.09);
            --amber: #F59E0B;
            --amber-soft: rgba(245, 158, 11, 0.12);
            --text: #0f172a;
            --text-secondary: #475569;
            --text-muted: #7c8aa0;
            --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.04), 0 1px 2px rgba(15, 23, 42, 0.03);
            --shadow-md: 0 6px 20px rgba(15, 23, 42, 0.06), 0 1px 4px rgba(15, 23, 42, 0.04);
            --shadow-lg: 0 14px 44px rgba(15, 23, 42, 0.08), 0 2px 10px rgba(15, 23, 42, 0.04);
            --shadow-xl: 0 20px 60px rgba(79, 70, 229, 0.14), 0 4px 16px rgba(15, 23, 42, 0.06);
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-display: 'Plus Jakarta Sans', sans-serif;
            --font-body: 'DM Sans', sans-serif;
        }
        *,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-body);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            overflow-x: hidden;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        ul {
            list-style: none;
        }
        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 2rem;
        }
        /* Header */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(250, 251, 253, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
        }
        header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
        }
        .logo {
            font-family: var(--font-display);
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.03em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: color 0.2s ease;
        }
        .logo:hover {
            color: var(--primary-hover);
        }
        .logo-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--mint);
            animation: pulse-dot 2s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                transform: scale(1);
                opacity: 1;
            }
            50% {
                transform: scale(2);
                opacity: 0.4;
            }
        }
        .site-nav ul {
            display: flex;
            gap: 0.2rem;
        }
        .site-nav a {
            font-family: var(--font-display);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 0.5rem 1rem;
            border-radius: 10px;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .site-nav a:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }
        .site-nav a[aria-current="page"] {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }
        /* 主内容区域 */
        main {
            position: relative;
        }
        .page-hero {
            padding: 4rem 0 2.5rem;
            text-align: center;
            background: linear-gradient(180deg, rgba(79,70,229,0.04) 0%, transparent 40%);
        }
        .page-hero h1 {
            font-family: var(--font-display);
            font-size: clamp(2.5rem, 5vw, 3.6rem);
            font-weight: 800;
            letter-spacing: -0.03em;
            color: var(--text);
            margin-bottom: 0.5rem;
        }
        .page-hero .gradient-text {
            background: linear-gradient(135deg, var(--primary) 0%, var(--coral) 50%, var(--mint) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-hero p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 580px;
            margin: 0 auto 1.5rem;
        }
        /* 平台快速跳转按钮 */
        .platform-nav {
            display: flex;
            justify-content: center;
            gap: 0.75rem;
            flex-wrap: wrap;
            margin-bottom: 2.5rem;
        }
        .platform-nav a {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.65rem 1.3rem;
            border-radius: 30px;
            background: var(--surface);
            border: 1px solid var(--border);
            font-family: var(--font-display);
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            transition: all 0.25s ease;
            box-shadow: var(--shadow-sm);
        }
        .platform-nav a:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-soft);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .platform-nav a .nav-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            display: inline-block;
        }
        .platform-nav a:nth-child(1) .nav-dot {
            background: var(--primary);
        }
        .platform-nav a:nth-child(2) .nav-dot {
            background: var(--mint);
        }
        .platform-nav a:nth-child(3) .nav-dot {
            background: var(--amber);
        }
        .platform-nav a:nth-child(4) .nav-dot {
            background: var(--coral);
        }
        /* 平台模块通用 */
        .platform-section {
            padding: 2.5rem 0 2rem;
        }
        .platform-section:nth-child(even) {
            background: var(--bg-soft);
        }
        .platform-title {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 1.5rem;
            font-family: var(--font-display);
            font-size: 1.6rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text);
        }
        .platform-title .platform-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
        }
        .win-icon {
            background: var(--primary-soft);
            color: var(--primary);
        }
        .mac-icon {
            background: var(--mint-soft);
            color: #0891b2;
        }
        .android-icon {
            background: var(--amber-soft);
            color: #b45309;
        }
        .config-icon {
            background: var(--coral-soft);
            color: var(--coral);
        }
        .platform-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.25rem;
        }
        .platform-card {
            background: var(--surface);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            transition: all 0.3s ease;
        }
        .platform-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }
        .platform-card h4 {
            font-family: var(--font-display);
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text);
            letter-spacing: -0.01em;
        }
        .platform-card p,
        .platform-card li {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0.35rem;
        }
        .platform-card ul {
            padding-left: 1.2rem;
        }
        .platform-card ul li {
            list-style: disc;
            margin-bottom: 0.25rem;
        }
        .tag-row {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-top: 0.75rem;
        }
        .tag {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            border-radius: 20px;
            font-size: 0.7rem;
            font-weight: 600;
            font-family: var(--font-display);
            letter-spacing: 0.02em;
            background: var(--primary-soft);
            color: var(--primary);
        }
        .tag.green {
            background: var(--mint-soft);
            color: #0891b2;
        }
        .tag.amber {
            background: var(--amber-soft);
            color: #b45309;
        }
        /* 场景选择区域 */
        .scenario-section {
            padding: 3rem 0 3.5rem;
            text-align: center;
        }
        .section-header {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            padding: 0.3rem 0.9rem;
            background: var(--primary-soft);
            border-radius: 100px;
            font-family: var(--font-display);
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.04em;
            margin-bottom: 1rem;
        }
        .section-header h2 {
            font-family: var(--font-display);
            font-size: clamp(1.8rem, 4vw, 2.4rem);
            font-weight: 800;
            letter-spacing: -0.03em;
            line-height: 1.2;
            color: var(--text);
            margin-bottom: 0.5rem;
        }
        .section-header p {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 480px;
            margin: 0 auto;
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
            max-width: 1000px;
            margin: 0 auto;
        }
        .scenario-card {
            background: var(--surface);
            border: 2px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 2rem 1.25rem;
            text-align: center;
            transition: all 0.35s ease;
            cursor: pointer;
            color: inherit;
            display: block;
        }
        .scenario-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: translateY(-5px);
            background: var(--bg-soft);
        }
        .scenario-icon {
            font-size: 2.4rem;
            margin-bottom: 0.75rem;
            display: block;
        }
        .scenario-card h4 {
            font-family: var(--font-display);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: var(--text);
        }
        .scenario-card p {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 1rem;
        }
        .scenario-link {
            font-family: var(--font-display);
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            transition: all 0.2s ease;
        }
        .scenario-card:hover .scenario-link {
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        /* 更新日志时间线 */
        .changelog-section {
            padding: 3rem 0 4rem;
        }
        .changelog-timeline {
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            padding-left: 2rem;
            border-left: 2px solid var(--border);
        }
        .changelog-item {
            margin-bottom: 2rem;
            position: relative;
            padding-left: 1.5rem;
        }
        .changelog-item::before {
            content: '';
            position: absolute;
            left: -2.5rem;
            top: 0.35rem;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid var(--bg);
            box-shadow: 0 0 0 2px var(--primary-soft);
        }
        .changelog-item h4 {
            font-family: var(--font-display);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.3rem;
        }
        .changelog-item .changelog-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-bottom: 0.5rem;
            display: block;
        }
        .changelog-item p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .changelog-item ul {
            padding-left: 1.2rem;
            margin-top: 0.3rem;
        }
        .changelog-item ul li {
            list-style: disc;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0.2rem;
        }
        /* Footer */
        footer {
            padding: 2.5rem 0;
            border-top: 1px solid var(--border-light);
            background: var(--bg-soft);
        }
        footer .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }
        .footer-left {
            display: flex;
            align-items: center;
            gap: 1.75rem;
            flex-wrap: wrap;
        }
        .footer-logo {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--primary);
        }
        .footer-copy {
            font-size: 0.78rem;
            color: var(--text-muted);
        }
        .footer-links {
            display: flex;
            gap: 1.75rem;
            flex-wrap: wrap;
        }
        .footer-links a {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        /* 响应式 */
        @media (max-width: 1024px) {
            .scenario-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .platform-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .logo {
                font-size: 1.2rem;
            }
            .site-nav a {
                font-size: 0.78rem;
                padding: 0.4rem 0.65rem;
            }
            .page-hero {
                padding: 3rem 0 2rem;
            }
            .platform-grid {
                grid-template-columns: 1fr;
            }
            .scenario-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.8rem;
            }
            .changelog-timeline {
                padding-left: 1.5rem;
            }
            footer .container {
                flex-direction: column;
                gap: 1rem;
                text-align: center;
            }
            .footer-left {
                flex-direction: column;
                gap: 0.4rem;
            }
            .footer-links {
                justify-content: center;
            }
        }
        @media (max-width: 480px) {
            .container {
                padding: 0 1.1rem;
            }
            header .container {
                flex-direction: column;
                height: auto;
                padding-top: 0.7rem;
                padding-bottom: 0.7rem;
                gap: 0.4rem;
            }
            .site-nav a {
                font-size: 0.74rem;
                padding: 0.3rem 0.5rem;
            }
            .platform-nav {
                gap: 0.5rem;
            }
            .platform-nav a {
                font-size: 0.78rem;
                padding: 0.5rem 1rem;
            }
            .scenario-grid {
                grid-template-columns: 1fr;
                max-width: 280px;
                margin: 0 auto;
            }
            .changelog-timeline {
                padding-left: 1rem;
            }
            .platform-title {
                font-size: 1.3rem;
            }
        }