:root {
            --qdmij8-primary: #3d7eff;
            --qdmij8-bg: #0a0a0a;
            --qdmij8-card-bg: #161616;
            --qdmij8-text-main: #eeeeee;
            --qdmij8-text-dim: #a0a0a0;
            --qdmij8-accent: #00e5ff;
            --qdmij8-border: rgba(255, 255, 255, 0.08);
            --qdmij8-container-width: 1320px;
        }

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

        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: 1.7;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 导航系统 */
        .qdmij8-nav-wrapper {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 10, 10, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--qdmij8-border);
        }

        .qdmij8-nav-container {
            max-width: var(--qdmij8-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
        }

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

        .qdmij8-logo img {
            height: 32px;
            width: auto;
            object-fit: contain;
        }

        .qdmij8-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
            min-width: 0;
        }

        .qdmij8-menu li a {
            color: var(--qdmij8-text-dim);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            padding: 8px 4px;
            display: block;
            white-space: nowrap;
        }

        .qdmij8-menu li a:hover,
        .qdmij8-menu li a.qdmij8-active {
            color: var(--qdmij8-text-main);
            border-bottom: 2px solid var(--qdmij8-primary);
        }

        /* Hero 非对称布局 */
        .qdmij8-hero-section {
            padding: 160px 24px 80px;
            max-width: var(--qdmij8-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

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

        .qdmij8-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #fff 0%, #a0a0a0 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .qdmij8-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.4rem);
            color: var(--qdmij8-text-dim);
            max-width: 600px;
            margin-bottom: 40px;
        }

        .qdmij8-hero-visual {
            flex: 1.2;
            min-width: 320px;
            position: relative;
        }

        .qdmij8-hero-image-box {
            border-radius: 24px;
            overflow: hidden;
            box-shadow: 0 40px 100px rgba(0, 0, 0, 0.5);
            border: 1px solid var(--qdmij8-border);
            transform: perspective(1000px) rotateY(-5deg);
            transition: transform 0.5s ease;
        }

        .qdmij8-hero-image-box:hover {
            transform: perspective(1000px) rotateY(0deg);
        }

        .qdmij8-hero-image-box img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 核心创新区块 */
        .qdmij8-section {
            padding: 96px 24px;
            max-width: var(--qdmij8-container-width);
            margin: 0 auto;
        }

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

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

        .qdmij8-feature-text {
            flex: 1;
            min-width: 300px;
        }

        .qdmij8-feature-media {
            flex: 1.2;
            min-width: 300px;
        }

        .qdmij8-feature-media img {
            width: 100%;
            border-radius: 16px;
            border: 1px solid var(--qdmij8-border);
        }

        .qdmij8-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(61, 126, 255, 0.1);
            color: var(--qdmij8-primary);
            border-radius: 100px;
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .qdmij8-feature-title {
            font-size: clamp(1.8rem, 3vw, 2.8rem);
            margin-bottom: 24px;
            font-weight: 700;
        }

        .qdmij8-feature-desc {
            color: var(--qdmij8-text-dim);
            font-size: 1.1rem;
            margin-bottom: 32px;
        }

        .qdmij8-capability-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        .qdmij8-cap-pill {
            background: var(--qdmij8-card-bg);
            border: 1px solid var(--qdmij8-border);
            padding: 6px 16px;
            border-radius: 8px;
            font-size: 14px;
            color: var(--qdmij8-text-main);
        }

        .qdmij8-metric {
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px dashed var(--qdmij8-border);
            font-weight: 700;
            color: var(--qdmij8-accent);
        }

        /* 动态区块 */
        .qdmij8-dynamic-area {
            background: linear-gradient(to bottom, var(--qdmij8-bg), #111);
            border-radius: 40px;
            padding: 80px 48px;
            text-align: center;
        }

        .qdmij8-cta-button {
            display: inline-block;
            padding: 18px 48px;
            background: var(--qdmij8-primary);
            color: white;
            text-decoration: none;
            border-radius: 12px;
            font-weight: 700;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            box-shadow: 0 10px 30px rgba(61, 126, 255, 0.3);
        }

        .qdmij8-cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(61, 126, 255, 0.5);
            background: #4a8bff;
        }

        /* 页脚 */
        .qdmij8-footer {
            border-top: 1px solid var(--qdmij8-border);
            padding: 80px 24px 40px;
            margin-top: 80px;
        }

        .qdmij8-footer-grid {
            max-width: var(--qdmij8-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
        }

        .qdmij8-footer-brand h3 {
            font-size: 24px;
            margin-bottom: 16px;
            font-weight: 800;
        }

        .qdmij8-footer-links h4 {
            margin-bottom: 24px;
            font-size: 16px;
            color: var(--qdmij8-text-main);
        }

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

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

        .qdmij8-footer-links ul li a {
            color: var(--qdmij8-text-dim);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .qdmij8-footer-links ul li a:hover {
            color: var(--qdmij8-primary);
        }

        .qdmij8-copyright {
            max-width: var(--qdmij8-container-width);
            margin: 60px auto 0;
            padding-top: 32px;
            border-top: 1px solid var(--qdmij8-border);
            text-align: center;
            color: var(--qdmij8-text-dim);
            font-size: 13px;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .qdmij8-hero-section {
                padding-top: 120px;
            }
        }

        @media (max-width: 768px) {
            .qdmij8-menu {
                display: none; /* 简化演示，手机端通常使用汉堡菜单 */
            }
            .qdmij8-hero-section {
                flex-direction: column;
                text-align: center;
            }
            .qdmij8-hero-image-box {
                transform: none;
            }
            .qdmij8-grid-feature {
                gap: 32px;
            }
            .qdmij8-dynamic-area {
                padding: 40px 24px;
            }
        }