/* 基础变量与重置 */
        :root {
            --x393oe-primary: #0056b3;
            --x393oe-accent: #00f2ff;
            --x393oe-dark: #0a192f;
            --x393oe-light: #f8fafc;
            --x393oe-text: #334155;
            --x393oe-white: #ffffff;
            --x393oe-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --x393oe-container-width: 1100px;
        }

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

        body {
            font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.7;
            color: var(--x393oe-text);
            background-color: var(--x393oe-white);
            overflow-x: hidden;
        }

        /* 布局通用规则 */
        .x393oe-flex { display: flex; flex-wrap: wrap; }
        .x393oe-container { 
            max-width: var(--x393oe-container-width); 
            margin: 0 auto; 
            padding: 0 24px; 
            width: 100%;
        }
        .x393oe-section { padding: 96px 0; word-break: keep-all; overflow-wrap: break-word; }

        /* 导航栏 */
        .x393oe-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
        }

        .x393oe-nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 32px;
            flex-wrap: wrap;
        }

        .x393oe-logo { min-width: 0; }
        .x393oe-logo img { height: 40px; width: auto; display: block; }

        .x393oe-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
            min-width: 0;
        }

        .x393oe-menu-item a {
            text-decoration: none;
            color: var(--x393oe-text);
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 6px;
            font-size: 14px;
            transition: var(--x393oe-transition);
        }

        .x393oe-menu-item a:hover {
            color: var(--x393oe-primary);
            background: rgba(0, 86, 179, 0.05);
        }

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

        /* Hero 区域 - 独特非对称布局 */
        .x393oe-hero {
            background: linear-gradient(135deg, var(--x393oe-dark) 0%, #1e293b 100%);
            padding: 160px 0 100px;
            color: var(--x393oe-white);
            position: relative;
            overflow: hidden;
        }

        .x393oe-hero::after {
            content: "";
            position: absolute;
            top: -10%;
            right: -5%;
            width: 50%;
            height: 120%;
            background: rgba(0, 242, 255, 0.03);
            transform: skewX(-15deg);
        }

        .x393oe-hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

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

        .x393oe-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(to right, #ffffff, var(--x393oe-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .x393oe-hero-subtitle {
            font-size: clamp(1rem, 1.2vw + 0.5rem, 1.25rem);
            opacity: 0.9;
            margin-bottom: 40px;
            max-width: 600px;
        }

        .x393oe-download-box {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: 32px;
            border-radius: 24px;
            backdrop-filter: blur(5px);
            max-width: 450px;
            flex-shrink: 0;
        }

        .x393oe-btn-primary {
            display: inline-block;
            background: var(--x393oe-accent);
            color: var(--x393oe-dark);
            padding: 18px 48px;
            border-radius: 12px;
            font-weight: 700;
            text-decoration: none;
            font-size: 1.1rem;
            transition: var(--x393oe-transition);
            text-align: center;
            width: 100%;
            box-shadow: 0 10px 30px rgba(0, 242, 255, 0.3);
        }

        .x393oe-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(0, 242, 255, 0.5);
        }

        /* 极速引擎深度解析 Section */
        .x393oe-engine-section {
            background: var(--x393oe-light);
        }

        .x393oe-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .x393oe-section-title {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            color: var(--x393oe-dark);
            margin-bottom: 16px;
        }

        .x393oe-engine-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .x393oe-engine-card {
            background: var(--x393oe-white);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.05);
            transition: var(--x393oe-transition);
            border: 1px solid rgba(0,0,0,0.02);
            min-width: 0;
        }

        .x393oe-engine-card:hover {
            transform: translateY(-10px);
            border-color: var(--x393oe-primary);
        }

        .x393oe-tech-label {
            display: inline-block;
            background: rgba(0, 86, 179, 0.1);
            color: var(--x393oe-primary);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .x393oe-engine-card h3 {
            margin-bottom: 16px;
            color: var(--x393oe-dark);
        }

        .x393oe-benefit-box {
            margin-top: 24px;
            padding-top: 24px;
            border-top: 1px dashed #e2e8f0;
            font-size: 14px;
            font-weight: 600;
            color: var(--x393oe-primary);
        }

        /* 操作模式 Section */
        .x393oe-modes-section {
            background: var(--x393oe-white);
        }

        .x393oe-mode-row {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: center;
            margin-bottom: 64px;
        }

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

        .x393oe-mode-visual {
            flex: 1;
            min-width: 300px;
            height: 200px;
            background: var(--x393oe-light);
            border-radius: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid #edf2f7;
        }

        .x393oe-mode-text {
            flex: 1;
            min-width: 300px;
        }

        .x393oe-mode-tag {
            color: #64748b;
            font-weight: 700;
            margin-bottom: 8px;
            display: block;
        }

        /* FAQ Section */
        .x393oe-faq-section {
            background: #f1f5f9;
        }

        .x393oe-faq-item {
            background: var(--x393oe-white);
            margin-bottom: 16px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

        .x393oe-faq-question {
            padding: 24px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--x393oe-dark);
        }

        .x393oe-faq-answer {
            padding: 0 24px 24px;
            color: var(--x393oe-text);
            line-height: 1.8;
        }

        /* 页脚 */
        .x393oe-footer {
            background: var(--x393oe-dark);
            color: var(--x393oe-white);
            padding: 80px 0 40px;
        }

        .x393oe-footer-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 64px;
        }

        .x393oe-footer-brand {
            flex: 2;
            min-width: 280px;
        }

        .x393oe-footer-brand h2 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--x393oe-accent);
        }

        .x393oe-footer-links {
            flex: 1;
            min-width: 150px;
        }

        .x393oe-footer-links h4 {
            margin-bottom: 24px;
            font-size: 16px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .x393oe-footer-links ul {
            list-style: none;
        }

        .x393oe-footer-links li {
            margin-bottom: 12px;
        }

        .x393oe-footer-links a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: var(--x393oe-transition);
        }

        .x393oe-footer-links a:hover {
            color: var(--x393oe-accent);
        }

        .x393oe-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 40px;
            text-align: center;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .x393oe-nav-container { height: auto; padding: 16px; }
            .x393oe-menu { width: 100%; margin-top: 16px; justify-content: center; }
            .x393oe-hero { padding: 120px 0 60px; text-align: center; }
            .x393oe-hero-grid { flex-direction: column; }
            .x393oe-download-box { width: 100%; max-width: 100%; }
            .x393oe-section { padding: 64px 0; }
            .x393oe-mode-row, .x393oe-mode-row:nth-child(even) { flex-direction: column; }
        }