:root {
            --i0sbar-primary: #42b983;
            --i0sbar-dark: #2c3e50;
            --i0sbar-light: #f8f9fa;
            --i0sbar-text: #34495e;
            --i0sbar-accent: #3498db;
            --i0sbar-bg: #ffffff;
            --i0sbar-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --i0sbar-radius: 16px;
            --i0sbar-container: 1100px;
        }

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

        body {
            font-family: "Inter", "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--i0sbar-text);
            background-color: var(--i0sbar-bg);
            line-height: 1.7;
            word-break: break-word;
            overflow-x: hidden;
        }

        /* 导航栏样式 */
        .i0sbar-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 0 24px;
        }

        .i0sbar-nav-container {
            max-width: var(--i0sbar-container);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            flex-wrap: wrap;
        }

        .i0sbar-logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .i0sbar-logo img {
            height: 32px;
            width: auto;
        }

        .i0sbar-menu {
            display: flex;
            list-style: none;
            gap: 4px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .i0sbar-menu li a {
            text-decoration: none;
            color: var(--i0sbar-text);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .i0sbar-menu li a:hover {
            background: rgba(66, 185, 131, 0.1);
            color: var(--i0sbar-primary);
        }

        .i0sbar-menu li a.active {
            color: var(--i0sbar-primary);
            background: rgba(66, 185, 131, 0.05);
            font-weight: 600;
        }

        /* Hero 区块 */
        .i0sbar-hero {
            padding: 160px 24px 80px;
            background: radial-gradient(circle at top right, #f0f7f4 0%, #ffffff 50%);
            text-align: center;
            position: relative;
        }

        .i0sbar-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .i0sbar-hero h1 {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            font-weight: 800;
            line-height: 1.2;
            color: var(--i0sbar-dark);
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }

        .i0sbar-hero p {
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.4rem);
            color: #667c92;
            margin-bottom: 40px;
        }

        /* 标签过滤 */
        .i0sbar-filter-bar {
            max-width: var(--i0sbar-container);
            margin: 0 auto 48px;
            display: flex;
            justify-content: center;
            gap: 16px;
            padding: 0 24px;
            flex-wrap: wrap;
        }

        .i0sbar-filter-btn {
            padding: 10px 24px;
            border-radius: 30px;
            border: 1px solid #eee;
            background: white;
            cursor: pointer;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .i0sbar-filter-btn.active {
            background: var(--i0sbar-dark);
            color: white;
            border-color: var(--i0sbar-dark);
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        }

        /* 主题展示网格 */
        .i0sbar-theme-section {
            padding: 40px 24px 96px;
        }

        .i0sbar-grid {
            max-width: var(--i0sbar-container);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 32px;
        }

        .i0sbar-card {
            background: #fff;
            border-radius: var(--i0sbar-radius);
            border: 1px solid rgba(0,0,0,0.05);
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .i0sbar-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--i0sbar-shadow);
        }

        .i0sbar-card-preview {
            aspect-ratio: 16/10;
            background: #eee;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        /* 模拟主题预览图（由于无可用图片，使用CSS构图） */
        .i0sbar-preview-mockup {
            width: 80%;
            height: 70%;
            background: white;
            border-radius: 4px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
            padding: 16px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .i0sbar-mock-line {
            height: 6px;
            background: #f0f0f0;
            border-radius: 3px;
        }

        .i0sbar-mock-h {
            height: 10px;
            background: var(--i0sbar-primary);
            width: 60%;
            margin-bottom: 4px;
        }

        .i0sbar-card-info {
            padding: 24px;
        }

        .i0sbar-card-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--i0sbar-dark);
            margin-bottom: 8px;
        }

        .i0sbar-card-desc {
            font-size: 0.95rem;
            color: #7f8c8d;
            margin-bottom: 20px;
            height: 3.4em;
            overflow: hidden;
        }

        .i0sbar-card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: auto;
        }

        .i0sbar-btn-sm {
            padding: 8px 16px;
            border-radius: 8px;
            text-decoration: none;
            font-size: 13px;
            font-weight: 600;
            transition: all 0.3s;
        }

        .i0sbar-btn-primary {
            background: var(--i0sbar-primary);
            color: white;
        }

        .i0sbar-btn-primary:hover {
            background: #36a172;
        }

        /* 教程区块 */
        .i0sbar-guide-section {
            background: var(--i0sbar-light);
            padding: 96px 24px;
        }

        .i0sbar-guide-container {
            max-width: 900px;
            margin: 0 auto;
        }

        .i0sbar-section-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(66, 185, 131, 0.1);
            color: var(--i0sbar-primary);
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .i0sbar-guide-item {
            display: flex;
            margin-bottom: 48px;
            gap: 24px;
            flex-wrap: wrap;
        }

        .i0sbar-guide-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: var(--i0sbar-dark);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
        }

        .i0sbar-guide-text {
            flex: 1;
            min-width: 0;
        }

        .i0sbar-guide-text h3 {
            font-size: 1.5rem;
            margin-bottom: 12px;
            color: var(--i0sbar-dark);
        }

        /* 动态区块 */
        .i0sbar-dynamic-area {
            padding: 96px 24px;
            max-width: var(--i0sbar-container);
            margin: 0 auto;
        }

        /* 页脚 */
        .i0sbar-footer {
            background: #1a1a1a;
            color: #999;
            padding: 80px 24px 40px;
        }

        .i0sbar-footer-grid {
            max-width: var(--i0sbar-container);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .i0sbar-footer-brand h4 {
            color: white;
            font-size: 1.5rem;
            margin-bottom: 20px;
        }

        .i0sbar-footer-links h5 {
            color: #eee;
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .i0sbar-footer-links ul {
            list-style: none;
        }

        .i0sbar-footer-links ul li {
            margin-bottom: 10px;
        }

        .i0sbar-footer-links ul li a {
            color: #888;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .i0sbar-footer-links ul li a:hover {
            color: var(--i0sbar-primary);
        }

        .i0sbar-copyright {
            max-width: var(--i0sbar-container);
            margin: 0 auto;
            padding-top: 40px;
            border-top: 1px solid #333;
            text-align: center;
            font-size: 13px;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .i0sbar-navbar {
                padding: 0 16px;
            }
            .i0sbar-menu {
                display: none; /* 简化移动端，实际项目中可添加汉堡菜单 */
            }
            .i0sbar-hero {
                padding: 120px 20px 60px;
            }
            .i0sbar-grid {
                grid-template-columns: 1fr;
            }
            .i0sbar-guide-item {
                flex-direction: column;
            }
        }

        /* 动画增强 */
        .i0sbar-card-preview::after {
            content: "PREVIEW";
            position: absolute;
            font-size: 10px;
            font-weight: 900;
            color: rgba(0,0,0,0.1);
            letter-spacing: 5px;
        }