:root {
            --wba18-bg: #050505;
            --wba18-surface: #111111;
            --wba18-accent: #3DDC84;
            --wba18-accent-glow: rgba(61, 220, 132, 0.3);
            --wba18-text: #E5E7EB;
            --wba18-text-muted: #9CA3AF;
            --wba18-border: rgba(255, 255, 255, 0.1);
            --wba18-glass: rgba(255, 255, 255, 0.03);
            --wba18-font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --wba18-kbd-bg: linear-gradient(180deg, #2D2D2D 0%, #1A1A1A 100%);
        }

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

        body {
            background-color: var(--wba18-bg);
            color: var(--wba18-text);
            font-family: var(--wba18-font-main);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 布局容器 */
        .wba18-container {
            max-width: 1320px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .wba18-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(5, 5, 5, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--wba18-border);
            padding: 16px 0;
        }

        .wba18-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }

        .wba18-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .wba18-logo img {
            height: 32px;
            display: block;
        }

        .wba18-nav-list {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .wba18-nav-item a {
            color: var(--wba18-text-muted);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .wba18-nav-item a:hover,
        .wba18-nav-item a.active {
            color: var(--wba18-accent);
        }

        /* Hero 区块 - 独特非对称布局 */
        .wba18-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            position: relative;
            background: radial-gradient(circle at 80% 20%, var(--wba18-accent-glow), transparent 40%);
        }

        .wba18-hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .wba18-hero-text {
            flex: 1 1 500px;
            min-width: 0;
            word-break: break-word;
        }

        .wba18-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 4rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            background: linear-gradient(to right, #fff, #888);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .wba18-hero-subtitle {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: var(--wba18-text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }

        /* 快捷键搜索展示区 */
        .wba18-search-mockup {
            flex: 1 1 400px;
            min-width: 0;
            background: var(--wba18-surface);
            border: 1px solid var(--wba18-border);
            border-radius: 20px;
            padding: 32px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
            position: relative;
            overflow: hidden;
        }

        /* 快捷键分类网格 */
        .wba18-section {
            padding: 96px 0;
            border-bottom: 1px solid var(--wba18-border);
        }

        .wba18-section-header {
            margin-bottom: 64px;
            max-width: 800px;
        }

        .wba18-tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--wba18-accent-glow);
            color: var(--wba18-accent);
            border-radius: 100px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .wba18-section-title {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            margin-bottom: 16px;
        }

        .wba18-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px;
        }

        .wba18-card {
            background: var(--wba18-glass);
            border: 1px solid var(--wba18-border);
            border-radius: 16px;
            padding: 24px;
            transition: transform 0.3s ease, background 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .wba18-card:hover {
            transform: translateY(-5px);
            background: rgba(255, 255, 255, 0.05);
            border-color: var(--wba18-accent);
        }

        .wba18-shortcut-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .wba18-shortcut-item:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .wba18-shortcut-desc {
            font-size: 0.95rem;
            color: var(--wba18-text);
        }

        .wba18-kbd-group {
            display: flex;
            gap: 4px;
        }

        kbd {
            display: inline-block;
            padding: 4px 8px;
            font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
            font-size: 0.8rem;
            color: #fff;
            background: var(--wba18-kbd-bg);
            border: 1px solid #444;
            border-radius: 6px;
            box-shadow: 0 2px 0 #000;
            min-width: 24px;
            text-align: center;
        }

        /* 重点 AI 交互区 */
        .wba18-ai-focus {
            background: linear-gradient(45deg, #111, #1a1a1a);
            border-radius: 32px;
            padding: 64px;
            margin: 48px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
            border: 1px solid var(--wba18-border);
        }

        .wba18-ai-content {
            flex: 1 1 400px;
            min-width: 0;
        }

        .wba18-ai-visual {
            flex: 1 1 300px;
            min-width: 0;
            display: flex;
            justify-content: center;
        }

        .wba18-ai-badge {
            font-size: 3rem;
            font-weight: 800;
            color: var(--wba18-accent);
            text-shadow: 0 0 20px var(--wba18-accent-glow);
        }

        /* 动态内容区块 */
        .wba18-news-section {
            background: var(--wba18-surface);
            padding: 64px 0;
        }

        .wba18-news-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .wba18-news-item {
            flex: 1 1 300px;
            min-width: 0;
            background: var(--wba18-bg);
            padding: 24px;
            border-radius: 12px;
            border-left: 4px solid var(--wba18-accent);
        }

        /* 页脚 */
        .wba18-footer {
            padding: 80px 0 40px;
            border-top: 1px solid var(--wba18-border);
            text-align: center;
        }

        .wba18-footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .wba18-footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 32px;
            margin-bottom: 32px;
            list-style: none;
        }

        .wba18-footer-links a {
            color: var(--wba18-text-muted);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .wba18-footer-links a:hover {
            color: #fff;
        }

        .wba18-copyright {
            color: #555;
            font-size: 0.85rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .wba18-nav-list {
                display: none; /* 简化处理，移动端通常使用汉堡菜单 */
            }
            .wba18-hero {
                padding-top: 120px;
            }
            .wba18-ai-focus {
                padding: 32px;
            }
        }

        /* 动画增强 */
        .wba18-card {
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
        }