:root {
            --px5cu-primary: #ae0000;
            --px5cu-primary-dark: #8b0000;
            --px5cu-secondary: #2c3e50;
            --px5cu-accent: #3498db;
            --px5cu-bg-light: #f4f7f9;
            --px5cu-text-main: #333333;
            --px5cu-text-muted: #666666;
            --px5cu-white: #ffffff;
            --px5cu-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --px5cu-border-radius: 12px;
            --px5cu-container-width: 1100px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.8;
            color: var(--px5cu-text-main);
            background-color: var(--px5cu-bg-light);
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 导航栏设计 */
        .px5cu-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 15px rgba(0,0,0,0.05);
            padding: 16px 0;
        }

        .px5cu-nav-container {
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .px5cu-logo {
            flex-shrink: 0;
            min-width: 0;
        }

        .px5cu-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .px5cu-nav-list {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
            min-width: 0;
        }

        .px5cu-nav-list a {
            text-decoration: none;
            color: var(--px5cu-secondary);
            font-weight: 500;
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s ease;
        }

        .px5cu-nav-list a:hover {
            color: var(--px5cu-primary);
            background: rgba(174, 0, 0, 0.05);
        }

        .px5cu-nav-list a.active {
            color: var(--px5cu-white);
            background: var(--px5cu-primary);
        }

        /* Hero 区块 - 独特非对称布局 */
        .px5cu-hero {
            background: linear-gradient(135deg, #1a1a1a 0%, #2c3e50 100%);
            color: var(--px5cu-white);
            padding: 96px 24px;
            position: relative;
            overflow: hidden;
        }

        .px5cu-hero-inner {
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
        }

        .px5cu-hero-content {
            flex: 1;
            min-width: 300px;
            padding-right: 48px;
        }

        .px5cu-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            margin-bottom: 24px;
            font-weight: 800;
            word-break: break-word;
        }

        .px5cu-hero-subtitle {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            opacity: 0.9;
            margin-bottom: 32px;
            max-width: 600px;
        }

        .px5cu-hero-badge {
            display: inline-block;
            background: var(--px5cu-primary);
            color: white;
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 14px;
            margin-bottom: 16px;
        }

        /* 教程主体布局 */
        .px5cu-main-layout {
            max-width: var(--px5cu-container-width);
            margin: -48px auto 64px;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }

        .px5cu-sidebar {
            flex: 0 0 280px;
            min-width: 0;
        }

        .px5cu-content-area {
            flex: 1;
            min-width: 300px;
            background: var(--px5cu-white);
            padding: 48px;
            border-radius: var(--px5cu-border-radius);
            box-shadow: var(--px5cu-shadow);
        }

        .px5cu-step-card {
            margin-bottom: 48px;
            padding-bottom: 32px;
            border-bottom: 1px solid #eee;
        }

        .px5cu-step-number {
            font-size: 14px;
            color: var(--px5cu-primary);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            display: block;
            margin-bottom: 8px;
        }

        .px5cu-step-title {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--px5cu-secondary);
        }

        .px5cu-code-block {
            background: #272822;
            color: #f8f8f2;
            padding: 24px;
            border-radius: 8px;
            font-family: "Courier New", Courier, monospace;
            margin: 16px 0;
            overflow-x: auto;
            font-size: 14px;
            line-height: 1.5;
        }

        /* 企业级应用场景区块 */
        .px5cu-enterprise-section {
            background: var(--px5cu-white);
            padding: 64px 24px;
            margin: 48px 0;
        }

        .px5cu-section-title {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 48px;
        }

        .px5cu-grid-container {
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .px5cu-workflow-card {
            background: var(--px5cu-bg-light);
            padding: 32px;
            border-radius: var(--px5cu-border-radius);
            transition: transform 0.3s ease;
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .px5cu-workflow-card:hover {
            transform: translateY(-5px);
            background: #fff;
            box-shadow: var(--px5cu-shadow);
        }

        .px5cu-workflow-tag {
            font-size: 12px;
            background: #e1e8ed;
            padding: 4px 8px;
            border-radius: 4px;
            align-self: flex-start;
            margin-bottom: 16px;
        }

        .px5cu-workflow-boost {
            margin-top: auto;
            padding-top: 16px;
            color: #27ae60;
            font-weight: bold;
            font-size: 14px;
        }

        /* 动态内容区块 */
        .px5cu-dynamic-section {
            max-width: var(--px5cu-container-width);
            margin: 64px auto;
            padding: 0 24px;
        }

        /* 页脚设计 */
        .px5cu-footer {
            background: #1a1a1a;
            color: #999;
            padding: 64px 24px;
            text-align: center;
        }

        .px5cu-footer-brand {
            color: var(--px5cu-white);
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 24px;
        }

        .px5cu-footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 24px;
            margin-bottom: 32px;
        }

        .px5cu-footer-links a {
            color: #999;
            text-decoration: none;
            transition: color 0.3s;
        }

        .px5cu-footer-links a:hover {
            color: var(--px5cu-white);
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .px5cu-nav-container {
                flex-direction: column;
                gap: 16px;
            }
            .px5cu-content-area {
                padding: 24px;
            }
            .px5cu-sidebar {
                display: none;
            }
        }