:root {
            --wba18-primary: #00E5FF;
            --wba18-bg: #0A0A0B;
            --wba18-card-bg: #161618;
            --wba18-text: #E2E8F0;
            --wba18-text-dim: #94A3B8;
            --wba18-accent: #6366F1;
            --wba18-container-width: 1100px;
        }

        * {
            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(--wba18-bg);
            color: var(--wba18-text);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 布局基础 */
        .wba18-container {
            max-width: var(--wba18-container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .wba18-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .wba18-grid {
            display: grid;
            gap: 32px;
        }

        /* 导航栏 */
        .wba18-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(10, 10, 11, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            padding: 16px 0;
        }

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

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

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

        .wba18-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            margin-left: 32px;
        }

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

        .wba18-nav-item a:hover {
            color: var(--wba18-primary);
        }

        .wba18-nav-item.wba18-active a {
            color: var(--wba18-primary);
            font-weight: 600;
            position: relative;
        }

        .wba18-nav-item.wba18-active a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--wba18-primary);
            border-radius: 2px;
        }

        /* Hero下载区 */
        .wba18-hero {
            padding: 120px 0 80px;
            text-align: center;
            background: radial-gradient(circle at top center, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
        }

        .wba18-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 4rem);
            font-weight: 800;
            margin-bottom: 24px;
            line-height: 1.1;
            background: linear-gradient(135deg, #FFF 0%, #94A3B8 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-break: break-word;
        }

        .wba18-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.2rem, 1.4rem);
            color: var(--wba18-text-dim);
            max-width: 800px;
            margin: 0 auto 48px;
            word-break: break-word;
        }

        /* 下载卡片组 */
        .wba18-download-options {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }

        .wba18-download-card {
            background: var(--wba18-card-bg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 24px;
            padding: 40px;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            text-align: left;
            position: relative;
            overflow: hidden;
            min-width: 0;
        }

        .wba18-download-card:hover {
            transform: translateY(-8px);
            border-color: var(--wba18-primary);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }

        .wba18-card-icon {
            width: 64px;
            height: 64px;
            background: rgba(0, 229, 255, 0.1);
            border-radius: 16px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(0, 229, 255, 0.2);
        }

        .wba18-card-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .wba18-card-desc {
            color: var(--wba18-text-dim);
            font-size: 0.95rem;
            margin-bottom: 32px;
        }

        .wba18-btn-download {
            display: inline-block;
            width: 100%;
            padding: 16px 32px;
            background: var(--wba18-primary);
            color: #000;
            text-decoration: none;
            border-radius: 12px;
            font-weight: 700;
            text-align: center;
            transition: all 0.3s;
        }

        .wba18-btn-download:hover {
            filter: brightness(1.1);
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.4);
        }

        .wba18-btn-secondary {
            background: transparent;
            color: var(--wba18-text);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .wba18-btn-secondary:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        /* 系统要求区块 */
        .wba18-specs {
            padding: 80px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .wba18-section-title {
            font-size: 2rem;
            margin-bottom: 48px;
            text-align: center;
        }

        .wba18-specs-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 16px;
        }

        .wba18-spec-item {
            background: rgba(255, 255, 255, 0.03);
            padding: 24px;
            border-radius: 16px;
            border-left: 4px solid var(--wba18-accent);
        }

        .wba18-spec-label {
            display: block;
            color: var(--wba18-text-dim);
            font-size: 0.85rem;
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        .wba18-spec-value {
            font-weight: 600;
            font-size: 1.1rem;
        }

        /* 安装指南 */
        .wba18-guide {
            padding: 80px 0;
            background: #0F0F11;
        }

        .wba18-guide-steps {
            display: flex;
            flex-direction: column;
            gap: 40px;
            max-width: 800px;
            margin: 0 auto;
        }

        .wba18-step {
            display: flex;
            gap: 24px;
            align-items: flex-start;
        }

        .wba18-step-num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            background: var(--wba18-accent);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
        }

        .wba18-step-content h3 {
            margin-bottom: 12px;
            font-size: 1.4rem;
        }

        .wba18-step-content p {
            color: var(--wba18-text-dim);
            line-height: 1.8;
        }

        /* 动态内容区块 */
        .wba18-news-section {
            padding: 80px 0;
        }

        .wba18-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .wba18-news-card {
            background: var(--wba18-card-bg);
            padding: 24px;
            border-radius: 16px;
            text-decoration: none;
            color: inherit;
            transition: transform 0.3s;
            border: 1px solid transparent;
        }

        .wba18-news-card:hover {
            transform: scale(1.02);
            border-color: rgba(255, 255, 255, 0.1);
        }

        .wba18-news-tag {
            font-size: 0.75rem;
            color: var(--wba18-primary);
            text-transform: uppercase;
            margin-bottom: 8px;
            display: block;
        }

        .wba18-news-title {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        /* 页脚 */
        .wba18-footer {
            padding: 64px 0 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            background: var(--wba18-bg);
        }

        .wba18-footer-top {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 48px;
            flex-wrap: wrap;
            gap: 40px;
        }

        .wba18-footer-brand h2 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .wba18-footer-brand p {
            color: var(--wba18-text-dim);
            max-width: 300px;
        }

        .wba18-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
        }

        .wba18-footer-col h4 {
            font-size: 0.9rem;
            margin-bottom: 24px;
            color: #FFF;
        }

        .wba18-footer-col ul {
            list-style: none;
        }

        .wba18-footer-col li {
            margin-bottom: 12px;
        }

        .wba18-footer-col a {
            color: var(--wba18-text-dim);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s;
        }

        .wba18-footer-col a:hover {
            color: var(--wba18-primary);
        }

        .wba18-footer-bottom {
            text-align: center;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            color: var(--wba18-text-dim);
            font-size: 0.85rem;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .wba18-nav-menu {
                display: none; /* 简化移动端展示 */
            }
            .wba18-hero {
                padding: 80px 0 40px;
            }
            .wba18-download-card {
                padding: 32px;
            }
            .wba18-footer-top {
                flex-direction: column;
            }
        }

        /* 抽象视觉元素 (替代图标) */
        .wba18-chip-design {
            width: 32px;
            height: 32px;
            border: 2px solid var(--wba18-primary);
            position: relative;
        }
        .wba18-chip-design::after {
            content: '';
            position: absolute;
            top: 4px; left: 4px; right: 4px; bottom: 4px;
            background: var(--wba18-primary);
            opacity: 0.4;
        }