:root {
            --px5cu-primary: #BF0000;
            --px5cu-primary-dark: #8B0000;
            --px5cu-secondary: #2C3E50;
            --px5cu-accent: #E74C3C;
            --px5cu-bg-light: #F9FAFB;
            --px5cu-text-main: #1F2937;
            --px5cu-text-muted: #6B7280;
            --px5cu-white: #FFFFFF;
            --px5cu-border: #E5E7EB;
            --px5cu-container-width: 1100px;
        }

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

        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--px5cu-bg-light);
            color: var(--px5cu-text-main);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 布局基础 */
        .px5cu-container {
            max-width: var(--px5cu-container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .px5cu-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .px5cu-flex-item {
            min-width: 0;
        }

        /* 导航栏 */
        .px5cu-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--px5cu-border);
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }

        .px5cu-nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 32px;
        }

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

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

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

        .px5cu-nav-link {
            text-decoration: none;
            color: var(--px5cu-text-main);
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .px5cu-nav-link:hover {
            color: var(--px5cu-primary);
            background: rgba(191, 0, 0, 0.05);
        }

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

        /* Hero 区块 - 独特非对称设计 */
        .px5cu-hero {
            padding: 160px 0 80px;
            background: linear-gradient(135deg, #ffffff 0%, #f3f4f6 100%);
            position: relative;
            overflow: hidden;
        }

        .px5cu-hero::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -10%;
            width: 60%;
            height: 200%;
            background: rgba(191, 0, 0, 0.03);
            transform: rotate(-15deg);
            z-index: 0;
        }

        .px5cu-hero-content {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .px5cu-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            line-height: 1.2;
            font-weight: 800;
            color: var(--px5cu-secondary);
            margin-bottom: 24px;
            word-break: break-word;
        }

        .px5cu-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--px5cu-text-muted);
            margin-bottom: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            word-break: break-word;
        }

        /* 核心对比网格 */
        .px5cu-comparison-grid {
            padding: 80px 0;
            background: var(--px5cu-white);
        }

        .px5cu-section-tag {
            display: inline-block;
            padding: 4px 16px;
            background: rgba(191, 0, 0, 0.1);
            color: var(--px5cu-primary);
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .px5cu-grid-layout {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }

        .px5cu-comp-card {
            background: var(--px5cu-bg-light);
            padding: 40px;
            border-radius: 24px;
            border: 1px solid var(--px5cu-border);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .px5cu-comp-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
        }

        .px5cu-comp-card h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .px5cu-comp-card.px5cu-highlight {
            border-color: var(--px5cu-primary);
            background: linear-gradient(to bottom right, #ffffff, #fff5f5);
        }

        /* 企业级场景展示 */
        .px5cu-workflow-section {
            padding: 96px 0;
            background: var(--px5cu-secondary);
            color: var(--px5cu-white);
        }

        .px5cu-workflow-item {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-bottom: 64px;
            align-items: center;
        }

        .px5cu-workflow-item:nth-child(even) {
            flex-direction: row-reverse;
        }

        .px5cu-workflow-text {
            flex: 1;
            min-width: 300px;
        }

        .px5cu-workflow-visual {
            flex: 1;
            min-width: 300px;
            background: rgba(255, 255, 255, 0.05);
            padding: 40px;
            border-radius: 32px;
            border: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
        }

        .px5cu-efficiency-badge {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--px5cu-accent);
            display: block;
            margin-bottom: 8px;
        }

        .px5cu-workflow-text h4 {
            font-size: 1.8rem;
            margin-bottom: 16px;
            color: #E5E7EB;
        }

        .px5cu-workflow-text p {
            color: #9CA3AF;
            margin-bottom: 24px;
        }

        /* 资讯区块标签 */
        .px5cu-dynamic-section {
            padding: 80px 0;
        }

        /* 底部设计 */
        .px5cu-footer {
            background: #111827;
            color: var(--px5cu-white);
            padding: 80px 0 40px;
        }

        .px5cu-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .px5cu-footer-brand h2 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--px5cu-white);
        }

        .px5cu-footer-links h4 {
            margin-bottom: 20px;
            font-size: 1.1rem;
        }

        .px5cu-footer-links ul {
            list-style: none;
        }

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

        .px5cu-footer-links a {
            color: #9CA3AF;
            text-decoration: none;
            transition: color 0.3s;
        }

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

        .px5cu-copyright {
            border-top: 1px solid #374151;
            padding-top: 32px;
            text-align: center;
            color: #6B7280;
            font-size: 0.9rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .px5cu-nav-container {
                flex-direction: column;
                height: auto;
                padding: 16px;
            }
            .px5cu-nav-list {
                justify-content: center;
                margin-top: 16px;
            }
            .px5cu-workflow-item, .px5cu-workflow-item:nth-child(even) {
                flex-direction: column;
            }
            .px5cu-hero {
                padding: 180px 0 60px;
            }
        }