:root {
            --rzm18-primary: #4285F4;
            --rzm18-red: #EA4335;
            --rzm18-yellow: #FBBC05;
            --rzm18-green: #34A853;
            --rzm18-bg-dark: #202124;
            --rzm18-text-main: #3c4043;
            --rzm18-text-light: #5f6368;
            --rzm18-white: #ffffff;
            --rzm18-console-bg: #292a2d;
            --rzm18-border: #dadce0;
        }

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

        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            color: var(--rzm18-text-main);
            line-height: 1.6;
            background-color: #f8f9fa;
            word-break: break-word;
            overflow-wrap: break-word;
        }

        /* 导航栏 */
        .rzm18-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            border-bottom: 1px solid var(--rzm18-border);
        }

        .rzm18-nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .rzm18-logo {
            flex: 0 0 auto;
            min-width: 0;
            display: flex;
            align-items: center;
        }

        .rzm18-logo img {
            height: 32px;
            width: auto;
        }

        .rzm18-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            min-width: 0;
        }

        .rzm18-nav-menu li {
            min-width: 0;
        }

        .rzm18-nav-menu a {
            text-decoration: none;
            color: var(--rzm18-text-light);
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .rzm18-nav-menu a:hover {
            color: var(--rzm18-primary);
        }

        .rzm18-nav-menu a.rzm18-active {
            color: var(--rzm18-primary);
            border-bottom: 2px solid var(--rzm18-primary);
            padding-bottom: 4px;
        }

        /* Hero 区 - 独特布局 */
        .rzm18-hero {
            padding: 160px 24px 80px;
            background: radial-gradient(circle at top right, #e8f0fe, #ffffff);
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .rzm18-hero-inner {
            max-width: 1100px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .rzm18-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            color: var(--rzm18-bg-dark);
            margin-bottom: 24px;
            word-break: keep-all;
        }

        .rzm18-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.5rem);
            color: var(--rzm18-text-light);
            max-width: 800px;
            margin-bottom: 48px;
            line-height: 1.5;
        }

        /* 模拟控制台组件 */
        .rzm18-console-frame {
            width: 100%;
            max-width: 900px;
            background: var(--rzm18-console-bg);
            border-radius: 12px;
            box-shadow: 0 24px 48px rgba(0,0,0,0.15);
            text-align: left;
            overflow: hidden;
            border: 1px solid #3c4043;
        }

        .rzm18-console-header {
            background: #35363a;
            padding: 12px 16px;
            display: flex;
            gap: 8px;
            border-bottom: 1px solid #3c4043;
        }

        .rzm18-dot { width: 12px; height: 12px; border-radius: 50%; }
        .rzm18-dot-red { background: var(--rzm18-red); }
        .rzm18-dot-yellow { background: var(--rzm18-yellow); }
        .rzm18-dot-green { background: var(--rzm18-green); }

        .rzm18-console-body {
            padding: 24px;
            font-family: 'Consolas', 'Monaco', monospace;
            color: #bdc1c6;
            font-size: 14px;
            min-height: 200px;
        }

        .rzm18-console-line {
            margin-bottom: 8px;
            display: flex;
            flex-wrap: wrap;
        }

        .rzm18-console-prompt { color: var(--rzm18-green); margin-right: 10px; }
        .rzm18-console-keyword { color: #f28b82; }
        .rzm18-console-string { color: #81c995; }

        /* 内容板块 */
        .rzm18-section {
            padding: 96px 24px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .rzm18-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 48px;
            flex-wrap: wrap;
        }

        .rzm18-feature-card {
            background: var(--rzm18-white);
            padding: 40px;
            border-radius: 24px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: 1px solid var(--rzm18-border);
            min-width: 0;
        }

        .rzm18-feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 32px rgba(0,0,0,0.05);
        }

        .rzm18-card-icon {
            width: 56px;
            height: 56px;
            background: #e8f0fe;
            border-radius: 12px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--rzm18-primary);
        }

        .rzm18-card-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--rzm18-bg-dark);
        }

        .rzm18-card-desc {
            color: var(--rzm18-text-light);
            line-height: 1.7;
        }

        /* 安全矩阵表格 */
        .rzm18-matrix-container {
            margin-top: 64px;
            background: var(--rzm18-white);
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid var(--rzm18-border);
        }

        .rzm18-matrix-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
        }

        .rzm18-matrix-table th {
            background: #f1f3f4;
            padding: 20px 24px;
            font-weight: 600;
            color: var(--rzm18-bg-dark);
            border-bottom: 1px solid var(--rzm18-border);
        }

        .rzm18-matrix-table td {
            padding: 20px 24px;
            border-bottom: 1px solid var(--rzm18-border);
            color: var(--rzm18-text-light);
            font-size: 15px;
        }

        .rzm18-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            background: #e6f4ea;
            color: var(--rzm18-green);
        }

        /* 底部 */
        .rzm18-footer {
            background: var(--rzm18-bg-dark);
            color: #9aa0a6;
            padding: 80px 24px 40px;
        }

        .rzm18-footer-inner {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .rzm18-footer-brand {
            flex: 1 1 300px;
            min-width: 0;
        }

        .rzm18-footer-brand h2 {
            color: var(--rzm18-white);
            font-size: 24px;
            margin-bottom: 16px;
        }

        .rzm18-footer-links {
            flex: 2 1 600px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 24px;
            min-width: 0;
        }

        .rzm18-footer-group h4 {
            color: var(--rzm18-white);
            margin-bottom: 20px;
            font-size: 16px;
        }

        .rzm18-footer-group ul {
            list-style: none;
        }

        .rzm18-footer-group li {
            margin-bottom: 12px;
        }

        .rzm18-footer-group a {
            color: #9aa0a6;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .rzm18-footer-group a:hover {
            color: var(--rzm18-white);
        }

        .rzm18-copyright {
            margin-top: 64px;
            padding-top: 32px;
            border-top: 1px solid #3c4043;
            text-align: center;
            font-size: 13px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .rzm18-nav-menu {
                display: none; /* 简化移动端 */
            }
            .rzm18-hero {
                padding-top: 120px;
            }
            .rzm18-grid {
                grid-template-columns: 1fr;
            }
            .rzm18-matrix-table {
                display: block;
                overflow-x: auto;
            }
        }