:root {
            --x393oe-primary: #0056b3;
            --x393oe-secondary: #00c6ff;
            --x393oe-accent: #ff4757;
            --x393oe-success: #2ed573;
            --x393oe-bg: #f8fafc;
            --x393oe-text-dark: #1e293b;
            --x393oe-text-light: #64748b;
            --x393oe-white: #ffffff;
            --x393oe-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            --x393oe-radius: 16px;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--x393oe-bg);
            color: var(--x393oe-text-dark);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航栏 */
        .x393oe-header {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .x393oe-nav-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            flex-wrap: wrap;
        }

        .x393oe-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .x393oe-logo img {
            height: 36px;
            width: auto;
            object-fit: contain;
        }

        .x393oe-nav-menu {
            display: flex;
            list-style: none;
            gap: 24px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .x393oe-nav-menu li a {
            text-decoration: none;
            color: var(--x393oe-text-dark);
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.3s;
            position: relative;
            padding: 8px 0;
        }

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

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

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

        /* Hero 区块 */
        .x393oe-hero {
            padding: 160px 24px 80px;
            background: linear-gradient(135deg, #001f3f 0%, #0056b3 100%);
            color: var(--x393oe-white);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .x393oe-hero-content {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .x393oe-hero h1 {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            font-weight: 800;
            margin-bottom: 24px;
            line-height: 1.2;
            word-break: break-word;
        }

        .x393oe-hero p {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            opacity: 0.9;
            max-width: 700px;
            margin: 0 auto 40px;
            word-break: break-word;
        }

        /* 诊断卡片区 */
        .x393oe-section {
            padding: 80px 24px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .x393oe-grid-3 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }

        .x393oe-card {
            background: var(--x393oe-white);
            padding: 40px;
            border-radius: var(--x393oe-radius);
            box-shadow: var(--x393oe-shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid rgba(0, 0, 0, 0.03);
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

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

        .x393oe-card-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .x393oe-card h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--x393oe-primary);
        }

        .x393oe-card p {
            color: var(--x393oe-text-light);
            font-size: 1rem;
            word-break: break-word;
        }

        /* 深度技术解析区 */
        .x393oe-tech-deep-dive {
            background: #ffffff;
            border-radius: 32px;
            padding: 64px;
            margin: 48px 0;
            box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
        }

        .x393oe-tech-row {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
            margin-bottom: 64px;
        }

        .x393oe-tech-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .x393oe-tech-content {
            flex: 1;
            min-width: 300px;
        }

        .x393oe-tech-content h4 {
            font-size: 1.75rem;
            margin-bottom: 16px;
            color: var(--x393oe-text-dark);
        }

        .x393oe-tech-content .x393oe-benefit {
            display: inline-block;
            background: rgba(0, 86, 179, 0.1);
            color: var(--x393oe-primary);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-top: 12px;
        }

        /* FAQ 样式 */
        .x393oe-faq-item {
            border-bottom: 1px solid rgba(0, 0, 0, 0.1);
            padding: 24px 0;
        }

        .x393oe-faq-question {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--x393oe-text-dark);
            margin-bottom: 12px;
            display: flex;
            align-items: flex-start;
        }

        .x393oe-faq-question::before {
            content: 'Q:';
            margin-right: 12px;
            color: var(--x393oe-primary);
        }

        .x393oe-faq-answer {
            color: var(--x393oe-text-light);
            padding-left: 36px;
            word-break: break-word;
        }

        /* 页脚 */
        .x393oe-footer {
            background: #111;
            color: #fff;
            padding: 64px 24px;
            text-align: center;
        }

        .x393oe-footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .x393oe-footer-links {
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }

        .x393oe-footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s;
        }

        .x393oe-footer-links a:hover {
            color: #fff;
        }

        .x393oe-copyright {
            font-size: 0.85rem;
            color: #475569;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .x393oe-nav-container {
                height: auto;
                padding: 16px 24px;
            }
            .x393oe-nav-menu {
                width: 100%;
                justify-content: center;
                margin-top: 16px;
                gap: 12px;
            }
            .x393oe-tech-deep-dive {
                padding: 32px 20px;
            }
            .x393oe-hero {
                padding-top: 120px;
            }
        }