:root {
            --rc1gu-primary: #D42E2D;
            --rc1gu-secondary: #0052D4;
            --rc1gu-text-dark: #1D1D1F;
            --rc1gu-text-light: #86868B;
            --rc1gu-bg-soft: #F5F5F7;
            --rc1gu-white: #FFFFFF;
            --rc1gu-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --rc1gu-radius: 16px;
            --rc1gu-container: 1100px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--rc1gu-text-dark);
            background-color: var(--rc1gu-white);
            line-height: 1.6;
            word-break: keep-all;
            overflow-x: hidden;
        }

        /* 布局基础 */
        .rc1gu-flex { display: flex; flex-wrap: wrap; }
        .rc1gu-child { min-width: 0; }
        .rc1gu-container {
            max-width: var(--rc1gu-container);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .rc1gu-nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 64px;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            z-index: 1000;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            display: flex;
            align-items: center;
        }

        .rc1gu-nav-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .rc1gu-logo {
            flex-shrink: 0;
            display: flex;
            align-items: center;
        }

        .rc1gu-logo img {
            height: 32px;
            width: auto;
        }

        .rc1gu-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
        }

        .rc1gu-menu a {
            text-decoration: none;
            color: var(--rc1gu-text-dark);
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s;
        }

        .rc1gu-menu a:hover, .rc1gu-menu a.active {
            color: var(--rc1gu-primary);
        }

        /* Hero 区域 - 搜索式独特布局 */
        .rc1gu-hero {
            padding: 140px 0 80px;
            background: radial-gradient(circle at top right, #fff5f5 0%, #f0f7ff 100%);
            text-align: center;
        }

        .rc1gu-hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(212, 46, 45, 0.1);
            color: var(--rc1gu-primary);
            border-radius: 100px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .rc1gu-hero h1 {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .rc1gu-hero p {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: var(--rc1gu-text-light);
            max-width: 700px;
            margin: 0 auto 48px;
        }

        .rc1gu-search-box {
            max-width: 600px;
            margin: 0 auto;
            position: relative;
            background: var(--rc1gu-white);
            padding: 8px;
            border-radius: 50px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
        }

        .rc1gu-search-box input {
            flex: 1;
            border: none;
            padding: 12px 24px;
            font-size: 16px;
            outline: none;
            border-radius: 50px;
        }

        .rc1gu-search-btn {
            background: var(--rc1gu-primary);
            color: white;
            border: none;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s;
        }

        .rc1gu-search-btn:hover {
            transform: scale(1.05);
        }

        /* Bento Grid 常见问题分类 */
        .rc1gu-section {
            padding: 96px 0;
        }

        .rc1gu-grid-bento {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .rc1gu-card {
            background: var(--rc1gu-bg-soft);
            padding: 40px;
            border-radius: var(--rc1gu-radius);
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .rc1gu-card:hover {
            transform: translateY(-8px);
            background: var(--rc1gu-white);
            box-shadow: var(--rc1gu-shadow);
        }

        .rc1gu-card-icon {
            font-size: 32px;
            margin-bottom: 24px;
            display: block;
        }

        .rc1gu-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .rc1gu-card p {
            color: var(--rc1gu-text-light);
            font-size: 15px;
        }

        /* 安全系统 - 独特条纹布局 */
        .rc1gu-security-section {
            background: var(--rc1gu-text-dark);
            color: var(--rc1gu-white);
            border-radius: 32px;
            margin: 0 24px;
            padding: 80px 48px;
        }

        .rc1gu-security-header {
            max-width: 600px;
            margin-bottom: 64px;
        }

        .rc1gu-security-header h2 {
            font-size: 32px;
            margin-bottom: 16px;
        }

        .rc1gu-security-item {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: 32px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }

        .rc1gu-security-label {
            flex: 0 0 240px;
            font-weight: 700;
            color: var(--rc1gu-primary);
            font-size: 18px;
            min-width: 0;
        }

        .rc1gu-security-content {
            flex: 1;
            min-width: 0;
        }

        .rc1gu-security-detail {
            font-size: 14px;
            color: #aaa;
            margin-top: 8px;
            display: block;
        }

        /* 行业解决方案流动展示 */
        .rc1gu-solution-row {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
            margin-bottom: 80px;
        }

        .rc1gu-solution-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .rc1gu-solution-text {
            flex: 1;
            min-width: 300px;
        }

        .rc1gu-solution-visual {
            flex: 1;
            min-width: 300px;
            background: linear-gradient(135deg, #0052D4, #4364f7);
            height: 300px;
            border-radius: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: 800;
            font-size: 24px;
            text-transform: uppercase;
        }

        /* 页脚 */
        .rc1gu-footer {
            background: var(--rc1gu-bg-soft);
            padding: 80px 0 40px;
            margin-top: 96px;
        }

        .rc1gu-footer-top {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 64px;
        }

        .rc1gu-footer-brand h4 {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--rc1gu-primary);
        }

        .rc1gu-footer-links {
            display: flex;
            gap: 64px;
            flex-wrap: wrap;
        }

        .rc1gu-link-group h5 {
            font-size: 14px;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 0.1em;
        }

        .rc1gu-link-group ul {
            list-style: none;
        }

        .rc1gu-link-group li {
            margin-bottom: 12px;
        }

        .rc1gu-link-group a {
            text-decoration: none;
            color: var(--rc1gu-text-light);
            font-size: 14px;
            transition: color 0.3s;
        }

        .rc1gu-link-group a:hover {
            color: var(--rc1gu-primary);
        }

        .rc1gu-footer-bottom {
            border-top: 1px solid rgba(0,0,0,0.05);
            padding-top: 40px;
            text-align: center;
            color: var(--rc1gu-text-light);
            font-size: 13px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .rc1gu-menu {
                display: none; /* 移动端简化，实际项目中应有汉堡菜单 */
            }
            .rc1gu-hero {
                padding: 100px 0 60px;
            }
            .rc1gu-security-section {
                padding: 40px 24px;
                margin: 0 12px;
            }
            .rc1gu-security-label {
                flex: 0 0 100%;
            }
            .rc1gu-footer-links {
                gap: 32px;
            }
        }