:root {
            --i0sbar-primary: #42b983;
            --i0sbar-accent: #2c3e50;
            --i0sbar-bg: #fdfdfd;
            --i0sbar-text: #34495e;
            --i0sbar-muted: #7f8c8d;
            --i0sbar-border: #eeeeee;
            --i0sbar-shadow: 0 10px 30px rgba(0,0,0,0.05);
            --i0sbar-radius: 12px;
            --i0sbar-container-width: 1100px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--i0sbar-bg);
            color: var(--i0sbar-text);
            line-height: 1.8;
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 导航系统 */
        .i0sbar-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--i0sbar-border);
            transition: all 0.3s ease;
        }

        .i0sbar-nav-container {
            max-width: var(--i0sbar-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            flex-wrap: wrap;
        }

        .i0sbar-logo {
            flex-shrink: 0;
            min-width: 0;
        }

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

        .i0sbar-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 20px;
            min-width: 0;
        }

        .i0sbar-menu a {
            text-decoration: none;
            color: var(--i0sbar-text);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
            padding: 8px 0;
        }

        .i0sbar-menu a:hover, .i0sbar-menu a.active {
            color: var(--i0sbar-primary);
        }

        .i0sbar-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--i0sbar-primary);
        }

        /* Hero 区域 - 独特对角线分割布局 */
        .i0sbar-hero {
            padding: 160px 24px 100px;
            background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
            position: relative;
            overflow: hidden;
        }

        .i0sbar-hero-content {
            max-width: var(--i0sbar-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            min-width: 0;
        }

        .i0sbar-hero-text {
            flex: 1;
            min-width: 320px;
            padding-right: 48px;
            word-break: break-word;
        }

        .i0sbar-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            color: var(--i0sbar-accent);
            margin-bottom: 24px;
            font-weight: 800;
        }

        .i0sbar-hero-subtitle {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: var(--i0sbar-muted);
            margin-bottom: 32px;
        }

        .i0sbar-hero-visual {
            flex: 1;
            min-width: 320px;
            position: relative;
        }

        /* 模拟导出错误的视觉效果 */
        .i0sbar-error-box {
            background: white;
            padding: 32px;
            border-radius: var(--i0sbar-radius);
            box-shadow: var(--i0sbar-shadow);
            border: 1px solid #f2dede;
            position: relative;
        }

        .i0sbar-error-placeholder {
            width: 100%;
            height: 200px;
            background: #fcfcfc;
            border: 2px dashed #ddd;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: #999;
            border-radius: 8px;
        }

        /* 问题诊断 Section */
        .i0sbar-section {
            padding: 80px 24px;
            max-width: var(--i0sbar-container-width);
            margin: 0 auto;
        }

        .i0sbar-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .i0sbar-section-title {
            font-size: 2rem;
            color: var(--i0sbar-accent);
            margin-bottom: 16px;
        }

        /* 解决方案卡片网格 */
        .i0sbar-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .i0sbar-card {
            background: white;
            padding: 40px;
            border-radius: var(--i0sbar-radius);
            border: 1px solid var(--i0sbar-border);
            transition: transform 0.3s ease, shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

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

        .i0sbar-card-num {
            font-size: 3rem;
            font-weight: 900;
            color: rgba(66, 185, 131, 0.1);
            line-height: 1;
            margin-bottom: -20px;
        }

        .i0sbar-card-title {
            font-size: 1.25rem;
            color: var(--i0sbar-accent);
            margin-bottom: 16px;
            font-weight: 700;
        }

        .i0sbar-card-text {
            color: var(--i0sbar-muted);
            font-size: 1rem;
        }

        /* 代码/操作说明区块 */
        .i0sbar-method-block {
            margin-top: 64px;
            background: #282c34;
            border-radius: var(--i0sbar-radius);
            padding: 40px;
            color: #abb2bf;
            overflow: hidden;
        }

        .i0sbar-code-label {
            color: var(--i0sbar-primary);
            font-family: monospace;
            margin-bottom: 16px;
            display: block;
        }

        /* 动态内容区块 */
        .i0sbar-news-section {
            background: #f9f9f9;
            padding: 80px 24px;
        }

        .i0sbar-news-inner {
            max-width: var(--i0sbar-container-width);
            margin: 0 auto;
        }

        /* 页脚 */
        .i0sbar-footer {
            background: var(--i0sbar-accent);
            color: #ecf0f1;
            padding: 80px 24px 40px;
        }

        .i0sbar-footer-content {
            max-width: var(--i0sbar-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .i0sbar-footer-brand {
            flex: 1;
            min-width: 280px;
        }

        .i0sbar-footer-brand h2 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: white;
        }

        .i0sbar-footer-links {
            flex: 2;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 24px;
            min-width: 0;
        }

        .i0sbar-footer-col h4 {
            margin-bottom: 20px;
            font-size: 1rem;
            color: var(--i0sbar-primary);
        }

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

        .i0sbar-footer-col li {
            margin-bottom: 12px;
        }

        .i0sbar-footer-col a {
            color: #bdc3c7;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s;
        }

        .i0sbar-footer-col a:hover {
            color: white;
        }

        .i0sbar-copyright {
            max-width: var(--i0sbar-container-width);
            margin: 64px auto 0;
            padding-top: 32px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            font-size: 0.85rem;
            color: #95a5a6;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .i0sbar-hero-text {
                padding-right: 0;
                text-align: center;
                margin-bottom: 48px;
            }
            .i0sbar-hero-content {
                flex-direction: column;
            }
            .i0sbar-nav-container {
                height: auto;
                padding: 16px 24px;
            }
            .i0sbar-menu {
                justify-content: center;
                padding-top: 16px;
            }
            .i0sbar-grid {
                grid-template-columns: 1fr;
            }
        }