:root {
            --hhx9et-primary: #188fff;
            --hhx9et-secondary: #0e5fac;
            --hhx9et-bg-dark: #0a0c10;
            --hhx9et-bg-card: #161b22;
            --hhx9et-text-main: #e6edf3;
            --hhx9et-text-dim: #8b949e;
            --hhx9et-accent: #3fb950;
            --hhx9et-border: rgba(48, 54, 61, 0.8);
            --hhx9et-gap: 8px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--hhx9et-bg-dark);
            color: var(--hhx9et-text-main);
            line-height: 1.6;
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .hhx9et-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .hhx9et-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            background: rgba(10, 12, 16, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--hhx9et-border);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .hhx9et-nav-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            flex-wrap: wrap;
        }

        .hhx9et-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .hhx9et-logo img {
            height: 40px;
            display: block;
        }

        .hhx9et-menu {
            display: flex;
            list-style: none;
            gap: 24px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .hhx9et-menu a {
            text-decoration: none;
            color: var(--hhx9et-text-dim);
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.3s;
            white-space: nowrap;
        }

        .hhx9et-menu a:hover, .hhx9et-menu a.active {
            color: var(--hhx9et-primary);
        }

        /* Hero 区块 - 独特非对称设计 */
        .hhx9et-hero {
            padding: 160px 0 80px;
            background: radial-gradient(circle at top right, rgba(24, 143, 255, 0.15), transparent 40%);
            position: relative;
            overflow: hidden;
        }

        .hhx9et-hero-content {
            display: flex;
            flex-direction: column;
            gap: 24px;
            max-width: 800px;
            word-break: break-word;
        }

        .hhx9et-hero h1 {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            background: linear-gradient(135deg, #fff 0%, var(--hhx9et-primary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 16px;
        }

        .hhx9et-hero p {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
            color: var(--hhx9et-text-dim);
            max-width: 600px;
        }

        /* 更新日志主区域 - 侧边导航布局 */
        .hhx9et-main-grid {
            display: flex;
            gap: 48px;
            margin-top: 48px;
            flex-wrap: wrap;
        }

        .hhx9et-sidebar {
            flex: 0 0 280px;
            min-width: 0;
        }

        .hhx9et-content {
            flex: 1;
            min-width: 0;
        }

        /* 版本卡片样式 */
        .hhx9et-version-section {
            margin-bottom: 64px;
            position: relative;
            padding-left: 32px;
            border-left: 2px solid var(--hhx9et-border);
        }

        .hhx9et-version-dot {
            position: absolute;
            left: -9px;
            top: 0;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--hhx9et-primary);
            box-shadow: 0 0 15px var(--hhx9et-primary);
        }

        .hhx9et-version-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 24px;
            flex-wrap: wrap;
            gap: 16px;
        }

        .hhx9et-version-title {
            font-size: 2rem;
            color: #fff;
        }

        .hhx9et-badge {
            padding: 4px 12px;
            background: rgba(63, 185, 80, 0.15);
            color: var(--hhx9et-accent);
            border: 1px solid rgba(63, 185, 80, 0.3);
            border-radius: 20px;
            font-size: 0.85rem;
        }

        .hhx9et-log-card {
            background: var(--hhx9et-bg-card);
            border: 1px solid var(--hhx9et-border);
            border-radius: 16px;
            padding: 32px;
            transition: transform 0.3s, border-color 0.3s;
        }

        .hhx9et-log-card:hover {
            transform: translateY(-5px);
            border-color: var(--hhx9et-primary);
        }

        .hhx9et-category-title {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.1rem;
            color: var(--hhx9et-primary);
            margin: 24px 0 12px;
            font-weight: 600;
        }

        .hhx9et-log-list {
            list-style: none;
            padding-left: 0;
        }

        .hhx9et-log-list li {
            position: relative;
            padding: 8px 0 8px 24px;
            color: var(--hhx9et-text-main);
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .hhx9et-log-list li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--hhx9et-primary);
            font-weight: bold;
        }

        /* 行业部署场景卡片 */
        .hhx9et-scenario-section {
            background: linear-gradient(135deg, #161b22 0%, #0d1117 100%);
            border-radius: 24px;
            padding: 48px;
            margin: 80px 0;
            border: 1px solid var(--hhx9et-border);
        }

        .hhx9et-scenario-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
            margin-top: 32px;
        }

        .hhx9et-scenario-item {
            background: rgba(255,255,255,0.03);
            padding: 24px;
            border-radius: 12px;
            border: 1px solid transparent;
            transition: 0.3s;
        }

        .hhx9et-scenario-item:hover {
            border-color: var(--hhx9et-primary);
            background: rgba(255,255,255,0.05);
        }

        .hhx9et-scenario-item h4 {
            color: var(--hhx9et-primary);
            margin-bottom: 12px;
            font-size: 1.2rem;
        }

        /* 页脚 */
        .hhx9et-footer {
            padding: 80px 0 40px;
            border-top: 1px solid var(--hhx9et-border);
            text-align: center;
        }

        .hhx9et-footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: #fff;
        }

        .hhx9et-footer-copy {
            color: var(--hhx9et-text-dim);
            font-size: 0.9rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .hhx9et-main-grid {
                flex-direction: column;
            }
            .hhx9et-sidebar {
                flex: none;
                width: 100%;
            }
            .hhx9et-hero {
                padding: 120px 0 60px;
            }
            .hhx9et-menu {
                display: none; /* 简化演示：移动端可使用汉堡菜单逻辑，此处略 */
            }
        }