/* 基础变量与重置 */
        :root {
            --zpa57-primary: #1e40af;
            --zpa57-secondary: #3b82f6;
            --zpa57-accent: #10b981;
            --zpa57-bg: #f8fafc;
            --zpa57-text: #1e293b;
            --zpa57-text-light: #64748b;
            --zpa57-white: #ffffff;
            --zpa57-max-width: 1400px;
            --zpa57-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        /* 导航系统 */
        .zpa57-nav-container {
            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);
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
        }

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

        .zpa57-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .zpa57-logo img {
            height: 48px;
            width: auto;
        }

        .zpa57-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
            min-width: 0;
        }

        .zpa57-menu li a {
            text-decoration: none;
            color: var(--zpa57-text);
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 8px;
            transition: var(--zpa57-transition);
            font-size: clamp(0.85rem, 1vw + 0.2rem, 1rem);
        }

        .zpa57-menu li a:hover {
            background: rgba(30, 64, 175, 0.05);
            color: var(--zpa57-primary);
        }

        .zpa57-menu li a.zpa57-active {
            background: var(--zpa57-primary);
            color: var(--zpa57-white);
        }

        /* Hero 区块 - 独特非对称布局 */
        .zpa57-hero {
            padding: 160px 24px 80px;
            background: linear-gradient(135deg, #1e3a8a 0%, #1e40af 100%);
            color: var(--zpa57-white);
            position: relative;
            overflow: hidden;
        }

        .zpa57-hero::after {
            content: "";
            position: absolute;
            bottom: -50px;
            right: -50px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
            border-radius: 50%;
        }

        .zpa57-hero-inner {
            max-width: var(--zpa57-max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .zpa57-hero-text {
            flex: 1;
            min-width: 320px;
        }

        .zpa57-hero h1 {
            font-size: clamp(2rem, 5vw, 3.5rem);
            line-height: 1.2;
            margin-bottom: 24px;
            font-weight: 800;
        }

        .zpa57-hero p {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            opacity: 0.9;
            margin-bottom: 32px;
            max-width: 700px;
        }

        /* X11 配置流程 - 卡片流 */
        .zpa57-config-section {
            padding: 96px 24px;
            max-width: var(--zpa57-max-width);
            margin: 0 auto;
        }

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

        .zpa57-section-title h2 {
            font-size: 2.5rem;
            color: var(--zpa57-primary);
            margin-bottom: 16px;
        }

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

        .zpa57-step-card {
            background: var(--zpa57-white);
            padding: 40px;
            border-radius: 24px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            transition: var(--zpa57-transition);
            border: 1px solid rgba(0,0,0,0.03);
            position: relative;
            word-break: break-word;
        }

        .zpa57-step-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(30, 64, 175, 0.1);
        }

        .zpa57-step-number {
            width: 50px;
            height: 50px;
            background: var(--zpa57-primary);
            color: var(--zpa57-white);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            font-weight: 700;
            font-size: 1.5rem;
            margin-bottom: 24px;
        }

        .zpa57-step-card h3 {
            margin-bottom: 16px;
            font-size: 1.5rem;
            color: var(--zpa57-text);
        }

        /* 协议矩阵 - 独特展示区 */
        .zpa57-matrix-section {
            background: #0f172a;
            color: var(--zpa57-white);
            padding: 96px 24px;
            border-radius: 64px 64px 0 0;
            margin-top: 48px;
        }

        .zpa57-matrix-container {
            max-width: var(--zpa57-max-width);
            margin: 0 auto;
        }

        .zpa57-matrix-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 48px;
        }

        .zpa57-matrix-item {
            flex: 1;
            min-width: 300px;
            background: rgba(255,255,255,0.05);
            padding: 32px;
            border-radius: 20px;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .zpa57-matrix-item h4 {
            color: var(--zpa57-accent);
            font-size: 1.25rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .zpa57-tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .zpa57-tag {
            background: rgba(255,255,255,0.1);
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 0.85rem;
        }

        /* 动态内容区块 */
        .zpa57-faq-section {
            padding: 96px 24px;
            background: var(--zpa57-white);
        }

        .zpa57-faq-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .zpa57-faq-item {
            margin-bottom: 24px;
            padding-bottom: 24px;
            border-bottom: 1px solid #edf2f7;
        }

        .zpa57-faq-item h5 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            color: var(--zpa57-primary);
        }

        /* 页脚 */
        .zpa57-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 64px 24px;
            text-align: center;
        }

        .zpa57-footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--zpa57-white);
            margin-bottom: 24px;
        }

        .zpa57-footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            margin-bottom: 32px;
        }

        .zpa57-footer-links a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--zpa57-transition);
        }

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

        /* 响应式调整 */
        @media (max-width: 768px) {
            .zpa57-nav-content {
                height: auto;
                padding: 16px;
            }
            .zpa57-menu {
                width: 100%;
                justify-content: center;
                margin-top: 16px;
            }
            .zpa57-hero {
                padding-top: 120px;
                text-align: center;
            }
            .zpa57-hero-inner {
                flex-direction: column;
            }
            .zpa57-matrix-item {
                min-width: 100%;
            }
        }