:root {
            --xa698d-primary: #1e56ff;
            --xa698d-accent: #7c4dff;
            --xa698d-bg-dark: #050a1a;
            --xa698d-text-main: #e0e6ed;
            --xa698d-text-dim: #94a3b8;
            --xa698d-glass: rgba(255, 255, 255, 0.05);
            --xa698d-border: rgba(255, 255, 255, 0.1);
            --xa698d-font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

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

        body {
            font-family: var(--xa698d-font-family);
            background-color: var(--xa698d-bg-dark);
            color: var(--xa698d-text-main);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航栏设计 */
        .xa698d-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(5, 10, 26, 0.8);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid var(--xa698d-border);
        }

        .xa698d-nav-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            flex-wrap: wrap;
        }

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

        .xa698d-logo img {
            height: 32px;
            width: auto;
        }

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

        .xa698d-nav-item a {
            text-decoration: none;
            color: var(--xa698d-text-dim);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .xa698d-nav-item a:hover {
            color: white;
            background: var(--xa698d-glass);
        }

        .xa698d-nav-item a.xa698d-active {
            color: var(--xa698d-primary);
            background: rgba(30, 86, 255, 0.1);
        }

        /* Hero 区块 - 独特全屏渐变结构 */
        .xa698d-hero {
            position: relative;
            padding: 160px 24px 100px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            background: radial-gradient(circle at 50% 30%, rgba(30, 86, 255, 0.15) 0%, transparent 70%);
            overflow: hidden;
        }

        .xa698d-hero-tag {
            background: linear-gradient(90deg, var(--xa698d-primary), var(--xa698d-accent));
            color: white;
            padding: 6px 16px;
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            display: inline-block;
        }

        .xa698d-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            max-width: 900px;
            word-break: break-word;
            background: linear-gradient(180deg, #fff 0%, #94a3b8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .xa698d-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--xa698d-text-dim);
            max-width: 700px;
            margin-bottom: 40px;
            word-break: break-word;
        }

        .xa698d-hero-visual {
            width: 100%;
            max-width: 1000px;
            margin-top: 48px;
            border-radius: 24px;
            background: var(--xa698d-glass);
            padding: 12px;
            border: 1px solid var(--xa698d-border);
            box-shadow: 0 40px 100px rgba(0,0,0,0.5);
            position: relative;
        }

        .xa698d-hero-visual-inner {
            background: #0a0f1d;
            border-radius: 16px;
            min-height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        /* 核心加速引擎层级 */
        .xa698d-tech-section {
            padding: 96px 24px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .xa698d-section-title {
            font-size: clamp(2rem, 3vw, 3rem);
            margin-bottom: 64px;
            text-align: center;
        }

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

        .xa698d-layer-card {
            background: var(--xa698d-glass);
            border: 1px solid var(--xa698d-border);
            padding: 40px;
            border-radius: 20px;
            transition: transform 0.3s ease, background 0.3s ease;
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .xa698d-layer-card:hover {
            transform: translateY(-8px);
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--xa698d-primary);
        }

        .xa698d-layer-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--xa698d-primary);
        }

        .xa698d-layer-desc {
            color: var(--xa698d-text-dim);
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .xa698d-tech-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .xa698d-tech-tag {
            font-size: 12px;
            padding: 4px 10px;
            background: rgba(30, 86, 255, 0.1);
            color: #8daaff;
            border-radius: 4px;
        }

        /* 版本矩阵 */
        .xa698d-matrix-section {
            padding: 96px 24px;
            background: #080d1a;
        }

        .xa698d-matrix-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .xa698d-matrix-card {
            flex: 1;
            min-width: 300px;
            background: #0d1425;
            border-radius: 24px;
            padding: 48px 32px;
            border: 1px solid var(--xa698d-border);
            display: flex;
            flex-direction: column;
        }

        .xa698d-matrix-edition {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .xa698d-matrix-target {
            font-size: 14px;
            color: var(--xa698d-text-dim);
            margin-bottom: 32px;
        }

        .xa698d-matrix-specs {
            margin-bottom: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--xa698d-border);
        }

        .xa698d-spec-item {
            display: flex;
            justify-content: space-between;
            font-size: 14px;
            margin-bottom: 12px;
        }

        .xa698d-spec-label { color: var(--xa698d-text-dim); }
        .xa698d-spec-val { color: white; font-weight: 600; }

        .xa698d-matrix-advantage {
            background: rgba(124, 77, 255, 0.1);
            padding: 16px;
            border-radius: 12px;
            font-size: 14px;
            color: #b392ff;
            margin-top: auto;
        }

        /* 知识库区块 */
        .xa698d-knowledge-section {
            padding: 96px 24px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .xa698d-article-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .xa698d-article-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px;
            background: var(--xa698d-glass);
            border-radius: 16px;
            transition: 0.3s;
            text-decoration: none;
            color: inherit;
        }

        .xa698d-article-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateX(10px);
        }

        /* 反馈区块 */
        .xa698d-feedback-section {
            padding: 96px 24px;
            background: linear-gradient(to bottom, #050a1a, #0a1125);
        }

        .xa698d-feedback-grid {
            max-width: 1100px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .xa698d-feedback-card {
            background: white;
            color: #1e293b;
            padding: 32px;
            border-radius: 20px;
            position: relative;
        }

        .xa698d-user-role {
            font-weight: 700;
            color: var(--xa698d-primary);
            margin-bottom: 12px;
            display: block;
        }

        .xa698d-footer {
            padding: 80px 24px 40px;
            border-top: 1px solid var(--xa698d-border);
            text-align: center;
        }

        .xa698d-footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: white;
            margin-bottom: 16px;
        }

        .xa698d-footer-copy {
            color: var(--xa698d-text-dim);
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .xa698d-nav-list {
                display: none; /* 简化移动端，实际开发中应有汉堡菜单 */
            }
            .xa698d-hero {
                padding-top: 120px;
            }
            .xa698d-layer-grid, .xa698d-matrix-container {
                flex-direction: column;
            }
            .xa698d-article-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

        /* 装饰用SVG背景 */
        .xa698d-svg-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            opacity: 0.4;
            pointer-events: none;
        }