/* 变量定义 */
        :root {
            --zpa57-primary: #0366d6;
            --zpa57-secondary: #f39c12;
            --zpa57-dark: #24292e;
            --zpa57-light: #f6f8fa;
            --zpa57-text: #2f363d;
            --zpa57-border: #e1e4e8;
            --zpa57-white: #ffffff;
            --zpa57-shadow: 0 8px 30px rgba(0,0,0,0.1);
            --zpa57-transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        }

        /* 基础重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
            color: var(--zpa57-text);
            line-height: 1.7;
            background-color: var(--zpa57-white);
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 布局容器 */
        .zpa57-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .zpa57-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--zpa57-border);
            transition: var(--zpa57-transition);
        }

        .zpa57-nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 72px;
            flex-wrap: wrap;
        }

        .zpa57-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .zpa57-logo img {
            height: 40px;
            display: block;
        }

        .zpa57-nav {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 16px;
            min-width: 0;
        }

        .zpa57-nav-link {
            text-decoration: none;
            color: var(--zpa57-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 12px;
            border-radius: 6px;
            transition: var(--zpa57-transition);
        }

        .zpa57-nav-link:hover {
            color: var(--zpa57-primary);
            background: rgba(3, 102, 214, 0.05);
        }

        .zpa57-nav-link.zpa57-active {
            color: var(--zpa57-primary);
            background: rgba(3, 102, 214, 0.1);
        }

        /* Hero 区块 */
        .zpa57-hero {
            padding: 96px 0 64px;
            background: linear-gradient(135deg, #f6f9fc 0%, #eef2f7 100%);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .zpa57-hero-content {
            position: relative;
            z-index: 2;
        }

        .zpa57-hero-title {
            font-size: clamp(2rem, 5vw, 3.5rem);
            font-weight: 800;
            color: var(--zpa57-dark);
            margin-bottom: 24px;
            line-height: 1.2;
            word-break: break-word;
        }

        .zpa57-hero-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: #586069;
            max-width: 800px;
            margin: 0 auto 40px;
            word-break: break-word;
        }

        /* 限制核心展示区 */
        .zpa57-limit-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            padding: 64px 0;
        }

        .zpa57-limit-card {
            background: var(--zpa57-white);
            border: 1px solid var(--zpa57-border);
            border-radius: 16px;
            padding: 32px;
            transition: var(--zpa57-transition);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .zpa57-limit-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--zpa57-shadow);
            border-color: var(--zpa57-primary);
        }

        .zpa57-card-icon {
            width: 48px;
            height: 48px;
            background: rgba(3, 102, 214, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            color: var(--zpa57-primary);
            font-weight: bold;
            font-size: 24px;
        }

        .zpa57-card-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--zpa57-dark);
        }

        .zpa57-card-text {
            color: #586069;
            margin-bottom: 20px;
            word-break: break-word;
        }

        .zpa57-badge {
            display: inline-block;
            padding: 4px 12px;
            background: #ffeef0;
            color: #d73a49;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-top: auto;
        }

        /* 详细对比表格区 */
        .zpa57-section-compare {
            padding: 80px 0;
            background-color: var(--zpa57-light);
        }

        .zpa57-table-container {
            width: 100%;
            overflow-x: auto;
            background: var(--zpa57-white);
            border-radius: 16px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
            margin-top: 40px;
        }

        .zpa57-compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .zpa57-compare-table th, .zpa57-compare-table td {
            padding: 20px 24px;
            text-align: left;
            border-bottom: 1px solid var(--zpa57-border);
        }

        .zpa57-compare-table th {
            background: #f1f8ff;
            color: var(--zpa57-dark);
            font-weight: 700;
        }

        .zpa57-pro-column {
            background: rgba(3, 102, 214, 0.02);
            font-weight: 600;
            color: var(--zpa57-primary);
        }

        /* 动态内容区块标记 */
        .zpa57-faq-section {
            padding: 80px 0;
        }

        .zpa57-faq-item {
            margin-bottom: 32px;
            border-bottom: 1px solid var(--zpa57-border);
            padding-bottom: 24px;
        }

        .zpa57-faq-question {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--zpa57-dark);
            margin-bottom: 12px;
        }

        /* 页脚 */
        .zpa57-footer {
            background: var(--zpa57-dark);
            color: var(--zpa57-white);
            padding: 64px 0 32px;
        }

        .zpa57-footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-bottom: 48px;
        }

        .zpa57-footer-col {
            flex: 1;
            min-width: 240px;
        }

        .zpa57-footer-brand {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--zpa57-white);
        }

        .zpa57-footer-links {
            list-style: none;
        }

        .zpa57-footer-links li {
            margin-bottom: 12px;
        }

        .zpa57-footer-links a {
            color: #959da5;
            text-decoration: none;
            transition: var(--zpa57-transition);
        }

        .zpa57-footer-links a:hover {
            color: var(--zpa57-white);
        }

        .zpa57-copyright {
            border-top: 1px solid #444d56;
            padding-top: 32px;
            text-align: center;
            color: #6a737d;
            font-size: 0.9rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .zpa57-nav-wrapper {
                height: auto;
                padding: 16px 0;
                flex-direction: column;
                gap: 16px;
            }
            .zpa57-nav {
                justify-content: center;
            }
            .zpa57-hero {
                padding: 64px 0 40px;
            }
            .zpa57-limit-grid {
                grid-template-columns: 1fr;
            }
        }