:root {
            --qdmij8-primary: #3BC7FF;
            --qdmij8-secondary: #8B5CF6;
            --qdmij8-bg: #0A0A0B;
            --qdmij8-card-bg: #161618;
            --qdmij8-text-main: #FFFFFF;
            --qdmij8-text-muted: #A1A1AA;
            --qdmij8-accent: #00E599;
            --qdmij8-border: rgba(255, 255, 255, 0.1);
            --qdmij8-font-clamp: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            --qdmij8-h1-clamp: clamp(2.5rem, 5vw + 1rem, 5rem);
        }

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

        body {
            background-color: var(--qdmij8-bg);
            color: var(--qdmij8-text-main);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 导航栏 */
        .qdmij8-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background: rgba(10, 10, 11, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--qdmij8-border);
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .qdmij8-nav-container {
            width: 95vw;
            max-width: 1400px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

        .qdmij8-logo {
            min-width: 0;
            display: flex;
            align-items: center;
        }

        .qdmij8-logo img {
            height: 32px;
            width: auto;
            border-radius: 4px;
        }

        .qdmij8-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 1.5rem;
        }

        .qdmij8-menu li {
            min-width: 0;
        }

        .qdmij8-menu a {
            text-decoration: none;
            color: var(--qdmij8-text-muted);
            font-size: 0.95rem;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .qdmij8-menu a:hover, .qdmij8-menu a.active {
            color: var(--qdmij8-primary);
        }

        /* Hero 区块 */
        .qdmij8-hero {
            padding: 160px 5% 80px;
            max-width: 1400px;
            margin: 0 auto;
            text-align: center;
            position: relative;
        }

        .qdmij8-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(59, 199, 255, 0.1);
            border: 1px solid var(--qdmij8-primary);
            color: var(--qdmij8-primary);
            border-radius: 100px;
            font-size: 0.9rem;
            margin-bottom: 24px;
        }

        .qdmij8-hero h1 {
            font-size: var(--qdmij8-h1-clamp);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(to right, #fff, #a1a1aa);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-break: break-word;
        }

        .qdmij8-hero p {
            font-size: var(--qdmij8-font-clamp);
            color: var(--qdmij8-text-muted);
            max-width: 800px;
            margin: 0 auto 48px;
            word-break: break-word;
        }

        /* 价格卡片网格 */
        .qdmij8-pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            padding: 40px 5%;
            max-width: 1400px;
            margin: 0 auto;
        }

        .qdmij8-card {
            background: var(--qdmij8-card-bg);
            border: 1px solid var(--qdmij8-border);
            border-radius: 24px;
            padding: 48px 32px;
            display: flex;
            flex-direction: column;
            transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s ease;
            position: relative;
            min-width: 0;
        }

        .qdmij8-card:hover {
            transform: translateY(-8px);
            border-color: var(--qdmij8-primary);
        }

        .qdmij8-card.featured {
            border: 2px solid var(--qdmij8-primary);
            box-shadow: 0 20px 40px rgba(59, 199, 255, 0.1);
        }

        .qdmij8-card-tag {
            position: absolute;
            top: 24px;
            right: 24px;
            background: var(--qdmij8-primary);
            color: #000;
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 0.75rem;
            font-weight: bold;
        }

        .qdmij8-card-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .qdmij8-card-price {
            font-size: 3.5rem;
            font-weight: 800;
            margin: 24px 0;
            display: flex;
            align-items: baseline;
        }

        .qdmij8-card-price span {
            font-size: 1rem;
            color: var(--qdmij8-text-muted);
            margin-left: 8px;
        }

        .qdmij8-features-list {
            list-style: none;
            margin-bottom: 40px;
            flex-grow: 1;
        }

        .qdmij8-features-list li {
            margin-bottom: 16px;
            color: var(--qdmij8-text-muted);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
            word-break: break-word;
        }

        .qdmij8-features-list li::before {
            content: "✓";
            color: var(--qdmij8-accent);
            font-weight: bold;
        }

        .qdmij8-btn {
            display: inline-block;
            padding: 16px 32px;
            border-radius: 12px;
            text-align: center;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .qdmij8-btn-primary {
            background: var(--qdmij8-primary);
            color: #000;
        }

        .qdmij8-btn-outline {
            background: transparent;
            border: 1px solid var(--qdmij8-border);
            color: #fff;
        }

        .qdmij8-btn:hover {
            filter: brightness(1.1);
        }

        /* 创新支柱区块 - 非对称布局 */
        .qdmij8-innovation {
            padding: 120px 5%;
            max-width: 1400px;
            margin: 0 auto;
        }

        .qdmij8-innovation-row {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            align-items: center;
            margin-bottom: 120px;
        }

        .qdmij8-innovation-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .qdmij8-innovation-content {
            flex: 1;
            min-width: 320px;
        }

        .qdmij8-innovation-visual {
            flex: 1.2;
            min-width: 320px;
            background: linear-gradient(135deg, #1e1e20 0%, #0a0a0b 100%);
            border: 1px solid var(--qdmij8-border);
            border-radius: 32px;
            padding: 48px;
            position: relative;
            overflow: hidden;
        }

        .qdmij8-tech-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(139, 92, 246, 0.1);
            color: var(--qdmij8-secondary);
            border-radius: 6px;
            font-size: 0.85rem;
            margin: 0 8px 8px 0;
        }

        .qdmij8-metric {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--qdmij8-primary);
            margin-top: 24px;
        }

        /* 资讯区块 */
        .qdmij8-news {
            padding: 80px 5%;
            max-width: 1400px;
            margin: 0 auto;
            border-top: 1px solid var(--qdmij8-border);
        }

        /* 页脚 */
        .qdmij8-footer {
            padding: 80px 5% 40px;
            max-width: 1400px;
            margin: 0 auto;
            border-top: 1px solid var(--qdmij8-border);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .qdmij8-footer-brand h2 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .qdmij8-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
        }

        .qdmij8-footer-col h4 {
            margin-bottom: 24px;
            color: var(--qdmij8-text-main);
        }

        .qdmij8-footer-col ul {
            list-style: none;
        }

        .qdmij8-footer-col li {
            margin-bottom: 12px;
        }

        .qdmij8-footer-col a {
            color: var(--qdmij8-text-muted);
            text-decoration: none;
            transition: color 0.3s;
        }

        .qdmij8-footer-col a:hover {
            color: var(--qdmij8-primary);
        }

        .qdmij8-copyright {
            width: 100%;
            margin-top: 64px;
            padding-top: 24px;
            border-top: 1px solid var(--qdmij8-border);
            color: var(--qdmij8-text-muted);
            font-size: 0.85rem;
            text-align: center;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .qdmij8-menu {
                display: none; /* 简化移动端演示 */
            }
            .qdmij8-innovation-row {
                flex-direction: column !important;
            }
            .qdmij8-hero h1 {
                font-size: 3rem;
            }
        }