:root {
            --xa698d-primary: #D93025;
            --xa698d-primary-dark: #B2251D;
            --xa698d-secondary: #1A2B4C;
            --xa698d-bg-light: #F8FAFC;
            --xa698d-text-main: #2D3436;
            --xa698d-text-muted: #636E72;
            --xa698d-white: #FFFFFF;
            --xa698d-accent: #00CEC9;
            --xa698d-gap: 8px;
            --xa698d-container-width: 1100px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--xa698d-bg-light);
            color: var(--xa698d-text-main);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        a { text-decoration: none; color: inherit; transition: 0.3s; }

        /* 导航栏设计 */
        .xa698d-nav-wrapper {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .xa698d-nav-container {
            max-width: var(--xa698d-container-width);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 24px;
            height: 72px;
        }

        .xa698d-logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
        }

        .xa698d-logo img {
            height: 36px;
            width: auto;
        }

        .xa698d-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
            min-width: 0;
        }

        .xa698d-menu li { min-width: 0; }

        .xa698d-menu a {
            font-size: 14px;
            font-weight: 500;
            color: var(--xa698d-text-muted);
            padding: 8px 12px;
            border-radius: 6px;
        }

        .xa698d-menu a:hover {
            color: var(--xa698d-primary);
            background: rgba(217, 48, 37, 0.05);
        }

        .xa698d-menu a.xa698d-active {
            color: var(--xa698d-primary);
            background: rgba(217, 48, 37, 0.08);
            font-weight: 700;
        }

        /* Hero 区域：独特的对角线扫描感 */
        .xa698d-hero {
            padding: 160px 24px 96px;
            background: linear-gradient(135deg, #1A2B4C 0%, #2D3436 100%);
            color: var(--xa698d-white);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .xa698d-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: repeating-linear-gradient(0deg, transparent, transparent 1px, rgba(217, 48, 37, 0.05) 1px, rgba(217, 48, 37, 0.05) 2px);
            transform: rotate(-15deg);
            pointer-events: none;
        }

        .xa698d-hero-content {
            max-width: 850px;
            margin: 0 auto;
            position: relative;
            z-index: 10;
        }

        .xa698d-hero-badge {
            display: inline-block;
            background: var(--xa698d-primary);
            color: white;
            padding: 4px 16px;
            border-radius: 20px;
            font-size: 14px;
            margin-bottom: 24px;
            letter-spacing: 1px;
        }

        .xa698d-hero h1 {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            line-height: 1.2;
            margin-bottom: 24px;
            font-weight: 800;
            word-break: break-word;
        }

        .xa698d-hero p {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            opacity: 0.9;
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 核心加速层 - 独特布局 */
        .xa698d-section {
            padding: 96px 24px;
            max-width: var(--xa698d-container-width);
            margin: 0 auto;
        }

        .xa698d-grid-layers {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }

        .xa698d-layer-card {
            background: var(--xa698d-white);
            padding: 40px;
            border-radius: 24px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.03);
            transition: transform 0.3s ease;
            border: 1px solid rgba(0,0,0,0.05);
            min-width: 0;
            word-break: break-word;
        }

        .xa698d-layer-card:hover {
            transform: translateY(-10px);
            border-color: var(--xa698d-primary);
        }

        .xa698d-layer-icon {
            font-size: 32px;
            margin-bottom: 24px;
            display: block;
            color: var(--xa698d-primary);
        }

        .xa698d-layer-name {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--xa698d-secondary);
        }

        .xa698d-tech-stack {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 24px;
        }

        .xa698d-tech-tag {
            background: #F1F2F6;
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            color: var(--xa698d-text-muted);
        }

        /* 版本矩阵 */
        .xa698d-matrix-container {
            background: var(--xa698d-secondary);
            color: white;
            border-radius: 32px;
            padding: 64px 40px;
            margin: 48px auto;
        }

        .xa698d-matrix-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 40px;
        }

        .xa698d-matrix-item {
            flex: 1;
            min-width: 280px;
            background: rgba(255,255,255,0.05);
            padding: 32px;
            border-radius: 20px;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .xa698d-matrix-item h3 {
            color: var(--xa698d-accent);
            margin-bottom: 16px;
            font-size: 20px;
        }

        .xa698d-specs-list {
            list-style: none;
            font-size: 14px;
            opacity: 0.8;
            margin-bottom: 20px;
        }

        .xa698d-specs-list li {
            margin-bottom: 8px;
            padding-left: 18px;
            position: relative;
        }

        .xa698d-specs-list li::before {
            content: '•';
            position: absolute;
            left: 0;
            color: var(--xa698d-primary);
        }

        /* 知识库区块 */
        .xa698d-knowledge-section {
            background: #EDF2F7;
            padding: 80px 0;
        }

        .xa698d-article-list {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 40px;
        }

        .xa698d-article-card {
            flex: 1;
            min-width: 300px;
            background: var(--xa698d-white);
            padding: 24px;
            border-radius: 16px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        /* 用户反馈 */
        .xa698d-feedback-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 24px;
            margin-top: 48px;
        }

        .xa698d-feedback-card {
            background: var(--xa698d-white);
            padding: 24px;
            border-radius: 16px;
            border-left: 4px solid var(--xa698d-primary);
        }

        .xa698d-rating {
            color: #F1C40F;
            margin-bottom: 12px;
            display: block;
        }

        /* 页脚 */
        .xa698d-footer {
            background: #1A2B4C;
            color: rgba(255,255,255,0.7);
            padding: 80px 24px 40px;
            text-align: center;
        }

        .xa698d-footer-brand {
            font-size: 24px;
            color: white;
            font-weight: 800;
            margin-bottom: 24px;
            display: block;
        }

        .xa698d-footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            margin-bottom: 40px;
        }

        .xa698d-footer-links a:hover {
            color: white;
        }

        .xa698d-copyright {
            font-size: 13px;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .xa698d-menu {
                display: none; /* 简化演示，手机端可隐藏或转汉堡菜单 */
            }
            .xa698d-hero {
                padding-top: 120px;
            }
            .xa698d-matrix-item {
                flex: 100%;
            }
        }