:root {
            --qdmij8-primary: #3d7eff;
            --qdmij8-secondary: #a855f7;
            --qdmij8-bg: #0a0a0c;
            --qdmij8-surface: #16161a;
            --qdmij8-text-main: #e2e8f0;
            --qdmij8-text-dim: #94a3b8;
            --qdmij8-accent-gradient: linear-gradient(135deg, #3d7eff 0%, #a855f7 100%);
            --qdmij8-border: rgba(255, 255, 255, 0.08);
            --qdmij8-radius: 16px;
        }

        * {
            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, Arial, sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 导航系统 */
        .qdmij8-header {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(10, 10, 12, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--qdmij8-border);
        }

        .qdmij8-nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

        .qdmij8-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .qdmij8-logo img {
            height: 32px;
            width: auto;
            display: block;
        }

        .qdmij8-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
            min-width: 0;
        }

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

        .qdmij8-menu a {
            color: var(--qdmij8-text-dim);
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .qdmij8-menu a:hover {
            color: var(--qdmij8-text-main);
            background: rgba(255, 255, 255, 0.05);
        }

        .qdmij8-menu a.qdmij8-active {
            color: #fff;
            background: rgba(61, 126, 255, 0.15);
            box-shadow: inset 0 0 0 1px rgba(61, 126, 255, 0.3);
        }

        /* Hero 区块 - 非对称流体布局 */
        .qdmij8-hero {
            padding: 160px 24px 80px;
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .qdmij8-hero-content {
            flex: 1 1 500px;
            min-width: 0;
        }

        .qdmij8-hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: var(--qdmij8-accent-gradient);
            border-radius: 100px;
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 24px;
            color: white;
        }

        .qdmij8-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 32px;
            background: linear-gradient(to bottom, #fff 40%, #94a3b8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            word-break: keep-all;
        }

        .qdmij8-hero-subtitle {
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.4rem);
            color: var(--qdmij8-text-dim);
            max-width: 600px;
            margin-bottom: 40px;
        }

        .qdmij8-hero-visual {
            flex: 1 1 500px;
            min-width: 0;
            position: relative;
        }

        .qdmij8-abstract-shape {
            width: 100%;
            aspect-ratio: 16/10;
            background: var(--qdmij8-surface);
            border: 1px solid var(--qdmij8-border);
            border-radius: var(--qdmij8-radius);
            box-shadow: 0 40px 80px rgba(0,0,0,0.5);
            overflow: hidden;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .qdmij8-code-mockup {
            width: 85%;
            height: 70%;
            background: #000;
            border-radius: 8px;
            padding: 20px;
            font-family: monospace;
            color: #60a5fa;
            position: relative;
        }

        /* 核心能力区 - 网格咬合布局 */
        .qdmij8-section {
            padding: 96px 24px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .qdmij8-section-header {
            margin-bottom: 64px;
            max-width: 800px;
        }

        .qdmij8-section-title {
            font-size: clamp(1.8rem, 3vw + 0.5rem, 2.8rem);
            margin-bottom: 16px;
        }

        .qdmij8-pillar-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .qdmij8-pillar-card {
            background: var(--qdmij8-surface);
            border: 1px solid var(--qdmij8-border);
            border-radius: var(--qdmij8-radius);
            padding: 40px;
            transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .qdmij8-pillar-card:hover {
            transform: translateY(-12px);
            border-color: var(--qdmij8-primary);
            box-shadow: 0 20px 40px rgba(61, 126, 255, 0.1);
        }

        .qdmij8-pillar-icon {
            width: 48px;
            height: 48px;
            background: rgba(61, 126, 255, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--qdmij8-primary);
            font-weight: bold;
            font-size: 20px;
        }

        .qdmij8-pillar-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .qdmij8-pillar-desc {
            color: var(--qdmij8-text-dim);
            font-size: 15px;
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .qdmij8-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .qdmij8-tag {
            font-size: 11px;
            padding: 4px 10px;
            background: rgba(255,255,255,0.05);
            border-radius: 4px;
            color: var(--qdmij8-text-dim);
        }

        .qdmij8-metric {
            margin-top: 24px;
            padding-top: 24px;
            border-top: 1px solid var(--qdmij8-border);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .qdmij8-metric-value {
            font-size: 24px;
            font-weight: 800;
            color: var(--qdmij8-primary);
        }

        .qdmij8-metric-label {
            font-size: 12px;
            color: var(--qdmij8-text-dim);
            line-height: 1.2;
        }

        /* 教程步骤流 */
        .qdmij8-tutorial-step {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            margin-bottom: 120px;
            align-items: center;
        }

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

        .qdmij8-step-info {
            flex: 1 1 450px;
            min-width: 0;
        }

        .qdmij8-step-num {
            font-size: 64px;
            font-weight: 900;
            color: rgba(255,255,255,0.03);
            line-height: 1;
            margin-bottom: -20px;
        }

        .qdmij8-step-title {
            font-size: 32px;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }

        .qdmij8-step-text {
            color: var(--qdmij8-text-dim);
            font-size: 18px;
            margin-bottom: 32px;
        }

        /* 页脚 */
        .qdmij8-footer {
            background: #050505;
            padding: 80px 24px;
            border-top: 1px solid var(--qdmij8-border);
        }

        .qdmij8-footer-inner {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .qdmij8-footer-brand {
            flex: 1 1 300px;
            min-width: 0;
        }

        .qdmij8-footer-logo-text {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }

        .qdmij8-footer-copy {
            color: var(--qdmij8-text-dim);
            font-size: 14px;
        }

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

        .qdmij8-link-group h4 {
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 20px;
            color: var(--qdmij8-text-main);
        }

        .qdmij8-link-group ul {
            list-style: none;
        }

        .qdmij8-link-group li {
            margin-bottom: 12px;
        }

        .qdmij8-link-group a {
            color: var(--qdmij8-text-dim);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .qdmij8-link-group a:hover {
            color: var(--qdmij8-primary);
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .qdmij8-menu {
                display: none; /* 简化移动端处理 */
            }
            .qdmij8-hero {
                padding-top: 120px;
                text-align: center;
            }
            .qdmij8-hero-content {
                display: flex;
                flex-direction: column;
                align-items: center;
            }
            .qdmij8-tutorial-step {
                gap: 32px;
            }
        }
    


        @keyframes pulse {
            0%, 100% { opacity: 0.5; transform: scaleY(1); }
            50% { opacity: 1; transform: scaleY(1.2); }
        }
        @keyframes rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }