:root {
            --zpa57-primary: #3498db;
            --zpa57-secondary: #2c3e50;
            --zpa57-accent: #e67e22;
            --zpa57-bg-light: #f8fafc;
            --zpa57-text-dark: #1e293b;
            --zpa57-text-muted: #64748b;
            --zpa57-white: #ffffff;
            --zpa57-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --zpa57-radius: 12px;
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background-color: var(--zpa57-bg-light);
            color: var(--zpa57-text-dark);
            line-height: 1.7;
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 导航栏设计 */
        .zpa57-nav-wrapper {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .zpa57-nav-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

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

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

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

        .zpa57-menu li {
            min-width: 0;
        }

        .zpa57-menu a {
            text-decoration: none;
            color: var(--zpa57-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.2s;
        }

        .zpa57-menu a:hover {
            color: var(--zpa57-primary);
            background: rgba(52, 152, 219, 0.05);
        }

        .zpa57-menu a.zpa57-active {
            color: var(--zpa57-primary);
            background: rgba(52, 152, 219, 0.1);
            font-weight: 700;
        }

        /* Hero 区域 - 独特非对称布局 */
        .zpa57-hero {
            padding: 160px 24px 80px;
            background: linear-gradient(135deg, #2c3e50 0%, #1a252f 100%);
            color: var(--zpa57-white);
            position: relative;
            overflow: hidden;
        }

        .zpa57-hero::after {
            content: "";
            position: absolute;
            bottom: -50px;
            right: -50px;
            width: 300px;
            height: 300px;
            background: var(--zpa57-primary);
            filter: blur(150px);
            opacity: 0.2;
        }

        .zpa57-hero-content {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .zpa57-hero-text {
            flex: 1 1 500px;
            min-width: 0;
            word-break: break-word;
        }

        .zpa57-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            margin-bottom: 24px;
            font-weight: 800;
            letter-spacing: -1px;
        }

        .zpa57-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.3rem);
            opacity: 0.9;
            margin-bottom: 32px;
            max-width: 600px;
        }

        .zpa57-hero-visual {
            flex: 1 1 400px;
            min-width: 0;
            background: rgba(255,255,255,0.05);
            padding: 32px;
            border-radius: 24px;
            border: 1px solid rgba(255,255,255,0.1);
            backdrop-filter: blur(5px);
            box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
        }

        /* 功能卡片区 */
        .zpa57-section {
            padding: 96px 24px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .zpa57-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .zpa57-section-title {
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            margin-bottom: 16px;
            color: var(--zpa57-secondary);
        }

        .zpa57-feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .zpa57-card {
            background: var(--zpa57-white);
            padding: 40px;
            border-radius: var(--zpa57-radius);
            box-shadow: var(--zpa57-shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid rgba(0,0,0,0.03);
            min-width: 0;
            word-break: break-word;
        }

        .zpa57-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.12);
        }

        .zpa57-card-icon {
            width: 50px;
            height: 50px;
            background: rgba(52, 152, 219, 0.1);
            border-radius: 10px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--zpa57-primary);
            font-weight: bold;
            font-size: 1.2rem;
        }

        /* 宏操作步骤 - 独特布局 */
        .zpa57-steps-container {
            background: #ffffff;
            border-radius: 32px;
            padding: 64px;
            margin: 48px 0;
            box-shadow: var(--zpa57-shadow);
        }

        .zpa57-step-item {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-bottom: 48px;
            align-items: flex-start;
        }

        .zpa57-step-number {
            flex: 0 0 60px;
            height: 60px;
            background: var(--zpa57-secondary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: bold;
        }

        .zpa57-step-content {
            flex: 1 1 300px;
            min-width: 0;
        }

        .zpa57-step-content h3 {
            margin-bottom: 12px;
            font-size: 1.4rem;
        }

        /* 动态区块 */
        .zpa57-news-section {
            background: #f1f5f9;
            padding: 80px 24px;
        }

        .zpa57-news-grid {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
        }

        .zpa57-news-card {
            flex: 1 1 300px;
            background: white;
            padding: 24px;
            border-radius: 8px;
            border-left: 4px solid var(--zpa57-primary);
        }

        /* 页脚 */
        .zpa57-footer {
            background: var(--zpa57-secondary);
            color: rgba(255,255,255,0.7);
            padding: 80px 24px 40px;
        }

        .zpa57-footer-grid {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            margin-bottom: 64px;
        }

        .zpa57-footer-col {
            flex: 1 1 200px;
            min-width: 0;
        }

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

        .zpa57-footer-col h4 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.1rem;
        }

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

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

        .zpa57-footer-links a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s;
        }

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

        .zpa57-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.9rem;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .zpa57-nav-container {
                height: auto;
                padding: 16px;
            }
            .zpa57-menu {
                margin-top: 16px;
                gap: 8px;
                justify-content: center;
            }
            .zpa57-hero {
                padding-top: 120px;
                text-align: center;
            }
            .zpa57-hero-content {
                justify-content: center;
            }
            .zpa57-steps-container {
                padding: 32px;
            }
        }