:root {
            --px5cu-primary: #bf0000;
            --px5cu-primary-dark: #8e0000;
            --px5cu-secondary: #2c3e50;
            --px5cu-accent: #f39c12;
            --px5cu-bg-light: #f9f9fb;
            --px5cu-text-main: #333333;
            --px5cu-text-muted: #666666;
            --px5cu-white: #ffffff;
            --px5cu-border: #e1e4e8;
            --px5cu-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --px5cu-container-width: 1100px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--px5cu-text-main);
            line-height: 1.8;
            background-color: var(--px5cu-bg-light);
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 导航栏设计 */
        .px5cu-nav-wrapper {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--px5cu-border);
            box-shadow: var(--px5cu-shadow);
        }

        .px5cu-nav-container {
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            flex-wrap: wrap;
        }

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

        .px5cu-logo img {
            height: 45px;
            display: block;
        }

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

        .px5cu-menu-item a {
            text-decoration: none;
            color: var(--px5cu-text-main);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 12px;
            border-radius: 4px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .px5cu-menu-item a:hover {
            color: var(--px5cu-primary);
            background: rgba(191, 0, 0, 0.05);
        }

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

        /* Hero 区域 - 独特对角线分割设计 */
        .px5cu-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
            color: var(--px5cu-white);
            position: relative;
            overflow: hidden;
        }

        .px5cu-hero::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 100px;
            background: var(--px5cu-bg-light);
            clip-path: polygon(0 100%, 100% 100%, 100% 0);
        }

        .px5cu-hero-inner {
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
            padding: 0 24px;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .px5cu-hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            word-break: break-word;
        }

        .px5cu-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            max-width: 800px;
            margin: 0 auto 40px;
            opacity: 0.9;
            word-break: break-word;
        }

        /* 教程主体布局 */
        .px5cu-main-content {
            max-width: var(--px5cu-container-width);
            margin: -40px auto 96px;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 48px;
            position: relative;
            z-index: 10;
        }

        /* 左侧侧边栏 */
        .px5cu-tutorial-sidebar {
            background: var(--px5cu-white);
            border-radius: 16px;
            padding: 32px;
            height: sticky;
            top: 100px;
            box-shadow: var(--px5cu-shadow);
            align-self: start;
        }

        .px5cu-sidebar-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 24px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--px5cu-primary);
        }

        .px5cu-step-list {
            list-style: none;
        }

        .px5cu-step-item {
            margin-bottom: 16px;
        }

        .px5cu-step-link {
            text-decoration: none;
            color: var(--px5cu-text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 500;
            transition: color 0.3s;
        }

        .px5cu-step-link:hover {
            color: var(--px5cu-primary);
        }

        .px5cu-step-num {
            width: 28px;
            height: 28px;
            background: var(--px5cu-border);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            flex-shrink: 0;
        }

        /* 右侧内容区 */
        .px5cu-tutorial-body {
            min-width: 0;
        }

        .px5cu-article-section {
            background: var(--px5cu-white);
            border-radius: 16px;
            padding: 48px;
            margin-bottom: 32px;
            box-shadow: var(--px5cu-shadow);
            word-break: break-word;
        }

        .px5cu-section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--px5cu-secondary);
        }

        .px5cu-article-text {
            margin-bottom: 24px;
            font-size: 1.1rem;
            color: var(--px5cu-text-main);
        }

        /* 教程步骤卡片 */
        .px5cu-instruction-card {
            border-left: 4px solid var(--px5cu-primary);
            background: #fffcfc;
            padding: 24px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
        }

        .px5cu-code-block {
            background: #272822;
            color: #f8f8f2;
            padding: 20px;
            border-radius: 8px;
            font-family: "Consolas", monospace;
            margin: 16px 0;
            overflow-x: auto;
            font-size: 0.9rem;
        }

        /* 企业级工作流展示 */
        .px5cu-workflow-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 40px;
        }

        .px5cu-workflow-card {
            flex: 1;
            min-width: 300px;
            background: var(--px5cu-white);
            padding: 32px;
            border-radius: 16px;
            border: 1px solid var(--px5cu-border);
            transition: transform 0.3s ease;
        }

        .px5cu-workflow-card:hover {
            transform: translateY(-8px);
            border-color: var(--px5cu-primary);
        }

        .px5cu-workflow-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(191, 0, 0, 0.1);
            color: var(--px5cu-primary);
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .px5cu-workflow-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .px5cu-workflow-desc {
            font-size: 0.95rem;
            color: var(--px5cu-text-muted);
            margin-bottom: 16px;
        }

        .px5cu-efficiency-badge {
            font-size: 0.9rem;
            font-weight: 700;
            color: #27ae60;
            border-top: 1px dashed var(--px5cu-border);
            padding-top: 12px;
        }

        /* 页脚设计 */
        .px5cu-footer {
            background: #1a1a1a;
            color: #ccc;
            padding: 80px 0 40px;
        }

        .px5cu-footer-container {
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .px5cu-footer-brand {
            flex: 1.5;
            min-width: 280px;
        }

        .px5cu-footer-brand-name {
            color: var(--px5cu-white);
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 24px;
        }

        .px5cu-footer-links {
            flex: 1;
            min-width: 200px;
        }

        .px5cu-footer-links h4 {
            color: var(--px5cu-white);
            margin-bottom: 24px;
        }

        .px5cu-footer-nav {
            list-style: none;
        }

        .px5cu-footer-nav li {
            margin-bottom: 12px;
        }

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

        .px5cu-footer-nav a:hover {
            color: var(--px5cu-primary);
        }

        .px5cu-copyright {
            margin-top: 64px;
            padding-top: 32px;
            border-top: 1px solid #333;
            text-align: center;
            font-size: 0.9rem;
            width: 100%;
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .px5cu-main-content {
                grid-template-columns: 1fr;
            }
            .px5cu-tutorial-sidebar {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .px5cu-nav-container {
                height: auto;
                padding: 16px;
            }
            .px5cu-menu {
                margin-top: 16px;
                justify-content: center;
            }
            .px5cu-hero {
                padding-top: 120px;
            }
            .px5cu-article-section {
                padding: 32px 24px;
            }
        }