:root {
            --x393oe-primary: #0056b3;
            --x393oe-secondary: #00a8ff;
            --x393oe-dark: #1a1c20;
            --x393oe-light: #f4f7fa;
            --x393oe-accent: #ff4757;
            --x393oe-text-main: #2d3436;
            --x393oe-text-muted: #636e72;
            --x393oe-white: #ffffff;
            --x393oe-gap: 8px;
        }

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

        body {
            font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
            background-color: var(--x393oe-bg);
            color: var(--x393oe-text-main);
            line-height: 1.8;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航系统 */
        .x393oe-nav-wrapper {
            position: fixed;
            top: 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);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
        }

        .x393oe-nav-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 16px 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }

        .x393oe-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .x393oe-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .x393oe-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            align-items: center;
        }

        .x393oe-menu-item a {
            text-decoration: none;
            color: var(--x393oe-text-main);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all 0.3s ease;
            padding: 8px 4px;
            position: relative;
        }

        .x393oe-menu-item a:hover {
            color: var(--x393oe-primary);
        }

        .x393oe-menu-item a.active {
            color: var(--x393oe-primary);
        }

        .x393oe-menu-item a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--x393oe-primary);
            border-radius: 2px;
        }

        /* 布局容器 */
        .x393oe-main-container {
            max-width: 1100px;
            margin: 120px auto 64px;
            padding: 0 24px;
        }

        /* Hero 故障排除区 */
        .x393oe-hero-troubleshoot {
            background: linear-gradient(135deg, #1a1c20 0%, #2d3436 100%);
            border-radius: 24px;
            padding: 64px;
            color: var(--x393oe-white);
            margin-bottom: 48px;
            position: relative;
            overflow: hidden;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }

        .x393oe-hero-content {
            flex: 1;
            min-width: 300px;
            z-index: 2;
        }

        .x393oe-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            word-break: break-word;
        }

        .x393oe-hero-subtitle {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            opacity: 0.9;
            max-width: 600px;
            margin-bottom: 32px;
        }

        .x393oe-badge {
            display: inline-block;
            padding: 6px 16px;
            background: var(--x393oe-secondary);
            color: white;
            border-radius: 50px;
            font-size: 0.85rem;
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* 核心技术网格 */
        .x393oe-tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
            margin-bottom: 64px;
        }

        .x393oe-tech-card {
            background: var(--x393oe-white);
            border: 1px solid rgba(0, 0, 0, 0.05);
            padding: 40px;
            border-radius: 20px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .x393oe-tech-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
        }

        .x393oe-tech-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--x393oe-primary);
        }

        .x393oe-tech-pillar {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--x393oe-primary);
        }

        .x393oe-tech-desc {
            color: var(--x393oe-text-muted);
            font-size: 1rem;
            margin-bottom: 20px;
        }

        .x393oe-tech-benefit {
            background: var(--x393oe-light);
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--x393oe-text-main);
        }

        /* 模式选择区 */
        .x393oe-modes-section {
            background: #ffffff;
            border-radius: 24px;
            padding: 48px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.02);
            margin-bottom: 64px;
        }

        .x393oe-section-header {
            text-align: center;
            margin-bottom: 40px;
        }

        .x393oe-section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .x393oe-mode-list {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .x393oe-mode-item {
            flex: 1;
            min-width: 280px;
            background: var(--x393oe-light);
            padding: 24px;
            border-radius: 16px;
            border: 1px solid transparent;
            transition: all 0.3s ease;
        }

        .x393oe-mode-item:hover {
            border-color: var(--x393oe-secondary);
            background: #fff;
        }

        .x393oe-mode-name {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
        }

        .x393oe-mode-logic {
            font-size: 0.95rem;
            color: var(--x393oe-text-muted);
        }

        /* 知识库问答 */
        .x393oe-kb-section {
            margin-bottom: 64px;
        }

        .x393oe-kb-item {
            background: #fff;
            margin-bottom: 16px;
            border-radius: 12px;
            padding: 24px;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .x393oe-kb-q {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--x393oe-primary);
            margin-bottom: 12px;
            display: block;
        }

        .x393oe-kb-a {
            color: var(--x393oe-text-main);
            padding-left: 20px;
            border-left: 2px solid var(--x393oe-light);
        }

        /* 动态内容区 */
        .x393oe-dynamic-content {
            background: var(--x393oe-dark);
            color: white;
            border-radius: 24px;
            padding: 48px;
            margin-bottom: 64px;
        }

        .x393oe-article-card {
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* 页脚 */
        .x393oe-footer {
            background: var(--x393oe-white);
            padding: 64px 24px;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
            text-align: center;
        }

        .x393oe-footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--x393oe-primary);
            margin-bottom: 16px;
        }

        .x393oe-footer-copy {
            color: var(--x393oe-text-muted);
            font-size: 0.9rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .x393oe-nav-container {
                flex-direction: column;
                gap: 16px;
            }
            .x393oe-menu {
                justify-content: center;
                gap: 12px;
            }
            .x393oe-hero-troubleshoot {
                padding: 32px;
            }
            .x393oe-tech-card {
                padding: 24px;
            }
        }