:root {
            --rc1gu-primary: #D44027;
            --rc1gu-primary-hover: #B5341F;
            --rc1gu-dark: #111111;
            --rc1gu-gray: #666666;
            --rc1gu-light: #F5F5F7;
            --rc1gu-white: #FFFFFF;
            --rc1gu-accent: #0071E3;
            --rc1gu-transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
        }

        * {
            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-dark);
            background-color: var(--rc1gu-white);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航系统 */
        .rc1gu-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .rc1gu-nav-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

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

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

        .rc1gu-menu {
            display: flex;
            list-style: none;
            flex-wrap: wrap;
            gap: 24px;
            min-width: 0;
        }

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

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

        .rc1gu-menu-item.active a {
            color: var(--rc1gu-primary);
            position: relative;
        }

        .rc1gu-menu-item.active a::after {
            content: '';
            position: absolute;
            bottom: -22px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--rc1gu-primary);
        }

        /* Hero 区块 - 独特非对称布局 */
        .rc1gu-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, rgba(212, 64, 39, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(0, 113, 227, 0.05) 0%, transparent 40%);
            min-height: 90vh;
            display: flex;
            align-items: center;
        }

        .rc1gu-hero-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .rc1gu-hero-content {
            flex: 1;
            min-width: 320px;
            word-break: break-word;
        }

        .rc1gu-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(212, 64, 39, 0.1);
            color: var(--rc1gu-primary);
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .rc1gu-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -0.02em;
        }

        .rc1gu-hero-subtitle {
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.4rem);
            color: var(--rc1gu-gray);
            margin-bottom: 40px;
            max-width: 600px;
            line-height: 1.6;
        }

        .rc1gu-download-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            min-width: 0;
        }

        .rc1gu-btn {
            padding: 16px 32px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: var(--rc1gu-transition);
            cursor: pointer;
            border: none;
        }

        .rc1gu-btn-primary {
            background: var(--rc1gu-primary);
            color: var(--rc1gu-white);
            box-shadow: 0 10px 20px rgba(212, 64, 39, 0.2);
        }

        .rc1gu-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(212, 64, 39, 0.3);
            background: var(--rc1gu-primary-hover);
        }

        .rc1gu-btn-outline {
            background: transparent;
            border: 2px solid var(--rc1gu-dark);
            color: var(--rc1gu-dark);
        }

        .rc1gu-btn-outline:hover {
            background: var(--rc1gu-dark);
            color: var(--rc1gu-white);
        }

        /* 核心优势 - 卡片流式布局 */
        .rc1gu-solutions {
            padding: 96px 0;
            background-color: var(--rc1gu-light);
        }

        .rc1gu-section-header {
            max-width: 900px;
            margin: 0 auto 64px;
            text-align: center;
            padding: 0 24px;
        }

        .rc1gu-section-title {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.8rem);
            margin-bottom: 16px;
        }

        .rc1gu-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .rc1gu-card {
            background: var(--rc1gu-white);
            padding: 48px;
            border-radius: 24px;
            transition: var(--rc1gu-transition);
            border: 1px solid rgba(0, 0, 0, 0.03);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .rc1gu-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.08);
        }

        .rc1gu-card-tag {
            font-size: 12px;
            font-weight: 700;
            text-transform: uppercase;
            color: var(--rc1gu-primary);
            margin-bottom: 16px;
            letter-spacing: 0.1em;
        }

        .rc1gu-card-title {
            font-size: 24px;
            margin-bottom: 20px;
        }

        .rc1gu-card-text {
            color: var(--rc1gu-gray);
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .rc1gu-card-advantage {
            padding-top: 20px;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
            font-weight: 600;
            color: var(--rc1gu-dark);
            font-size: 15px;
        }

        /* 安全防护区块 - 垂直列表 */
        .rc1gu-security {
            padding: 120px 0;
        }

        .rc1gu-security-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .rc1gu-security-item {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            margin-bottom: 64px;
            align-items: center;
        }

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

        .rc1gu-security-info {
            flex: 1;
            min-width: 300px;
        }

        .rc1gu-protocol {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .rc1gu-detail {
            font-size: 18px;
            color: var(--rc1gu-gray);
            margin-bottom: 24px;
        }

        .rc1gu-implementation {
            background: #f8f8f8;
            padding: 20px;
            border-left: 4px solid var(--rc1gu-primary);
            font-size: 15px;
            color: #444;
        }

        /* 动态内容区块 */
        .rc1gu-dynamic-section {
            padding: 96px 0;
            background: var(--rc1gu-dark);
            color: var(--rc1gu-white);
        }

        .rc1gu-cta {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .rc1gu-cta h2 {
            font-size: clamp(2rem, 4vw, 3rem);
            margin-bottom: 24px;
        }

        /* 页脚 */
        .rc1gu-footer {
            padding: 80px 0 40px;
            background: var(--rc1gu-white);
            border-top: 1px solid #eee;
        }

        .rc1gu-footer-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }

        .rc1gu-footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--rc1gu-dark);
            min-width: 200px;
        }

        .rc1gu-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .rc1gu-footer-col h4 {
            font-size: 14px;
            margin-bottom: 20px;
            color: var(--rc1gu-dark);
        }

        .rc1gu-footer-col ul {
            list-style: none;
        }

        .rc1gu-footer-col li {
            margin-bottom: 12px;
        }

        .rc1gu-footer-col a {
            text-decoration: none;
            color: var(--rc1gu-gray);
            font-size: 14px;
            transition: var(--rc1gu-transition);
        }

        .rc1gu-footer-col a:hover {
            color: var(--rc1gu-primary);
        }

        .rc1gu-copyright {
            margin-top: 64px;
            padding-top: 24px;
            border-top: 1px solid #eee;
            text-align: center;
            font-size: 13px;
            color: #999;
            width: 100%;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .rc1gu-nav-container {
                height: auto;
                padding: 16px 24px;
            }
            .rc1gu-menu {
                margin-top: 16px;
                gap: 12px;
                justify-content: center;
                width: 100%;
            }
            .rc1gu-hero {
                padding-top: 120px;
                text-align: center;
            }
            .rc1gu-hero-container {
                justify-content: center;
            }
            .rc1gu-download-group {
                justify-content: center;
            }
            .rc1gu-security-item, .rc1gu-security-item:nth-child(even) {
                flex-direction: column;
                text-align: center;
            }
            .rc1gu-implementation {
                border-left: none;
                border-top: 4px solid var(--rc1gu-primary);
            }
        }