:root {
            --rc1gu-primary: #0052D9;
            --rc1gu-primary-hover: #003EB3;
            --rc1gu-accent: #D82129;
            --rc1gu-text-main: #1D2129;
            --rc1gu-text-sub: #4E5969;
            --rc1gu-bg-light: #F7F8FA;
            --rc1gu-bg-white: #FFFFFF;
            --rc1gu-border: #E5E6EB;
            --rc1gu-shadow: 0 8px 24px rgba(0, 82, 217, 0.08);
            --rc1gu-max-width: 1400px;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            color: var(--rc1gu-text-main);
            background-color: var(--rc1gu-bg-light);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 导航系统 */
        .rc1gu-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--rc1gu-border);
            transition: all 0.3s ease;
        }

        .rc1gu-nav-container {
            max-width: var(--rc1gu-max-width);
            margin: 0 auto;
            padding: 0 32px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

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

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

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

        .rc1gu-nav-item a {
            text-decoration: none;
            color: var(--rc1gu-text-sub);
            font-weight: 500;
            font-size: clamp(0.9rem, 1vw + 0.1rem, 1rem);
            transition: color 0.3s;
            white-space: nowrap;
        }

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

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

        .rc1gu-nav-item.active a::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--rc1gu-primary);
        }

        /* Hero 视觉区 */
        .rc1gu-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, rgba(0, 82, 217, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(216, 33, 41, 0.03) 0%, transparent 40%);
            display: flex;
            justify-content: center;
            align-items: center;
            text-align: center;
        }

        .rc1gu-hero-content {
            max-width: 900px;
            padding: 0 24px;
            word-break: break-word;
            overflow-wrap: break-word;
        }

        .rc1gu-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(0, 82, 217, 0.1);
            color: var(--rc1gu-primary);
            border-radius: 100px;
            font-size: 0.9rem;
            margin-bottom: 24px;
            font-weight: 600;
        }

        .rc1gu-title {
            font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--rc1gu-text-main);
            word-break: keep-all;
        }

        .rc1gu-subtitle {
            font-size: clamp(1rem, 2vw + 0.5rem, 1.25rem);
            color: var(--rc1gu-text-sub);
            margin-bottom: 48px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* 下载控制台布局 */
        .rc1gu-download-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
            margin-top: 32px;
        }

        .rc1gu-download-card {
            background: var(--rc1gu-bg-white);
            border: 1px solid var(--rc1gu-border);
            border-radius: 16px;
            padding: 32px;
            width: 280px;
            min-width: 0;
            transition: all 0.3s ease;
            text-align: left;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .rc1gu-download-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--rc1gu-shadow);
            border-color: var(--rc1gu-primary);
        }

        .rc1gu-os-icon {
            font-size: 2rem;
            margin-bottom: 16px;
            height: 48px;
            width: 48px;
            background: var(--rc1gu-bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
        }

        .rc1gu-os-name {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .rc1gu-os-info {
            font-size: 0.85rem;
            color: var(--rc1gu-text-sub);
            margin-bottom: 24px;
        }

        .rc1gu-btn {
            display: inline-block;
            padding: 12px 24px;
            background: var(--rc1gu-primary);
            color: #fff;
            text-decoration: none;
            border-radius: 8px;
            font-weight: 600;
            text-align: center;
            transition: background 0.3s;
        }

        .rc1gu-btn:hover {
            background: var(--rc1gu-primary-hover);
        }

        /* 行业解决方案区 */
        .rc1gu-section {
            padding: 96px 32px;
            max-width: var(--rc1gu-max-width);
            margin: 0 auto;
        }

        .rc1gu-section-header {
            margin-bottom: 64px;
            text-align: center;
        }

        .rc1gu-solution-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .rc1gu-solution-item {
            background: var(--rc1gu-bg-white);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--rc1gu-border);
            min-width: 0;
            word-break: break-word;
        }

        .rc1gu-solution-tag {
            color: var(--rc1gu-primary);
            font-weight: 700;
            margin-bottom: 16px;
            display: block;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .rc1gu-solution-workflow {
            font-size: 1.1rem;
            margin-bottom: 24px;
            color: var(--rc1gu-text-main);
        }

        .rc1gu-solution-advantage {
            padding-top: 24px;
            border-top: 1px dashed var(--rc1gu-border);
            font-size: 0.95rem;
            color: var(--rc1gu-text-sub);
        }

        /* 安全系统 - 独特横向错位布局 */
        .rc1gu-security-row {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            align-items: center;
            margin-top: 64px;
        }

        .rc1gu-security-visual {
            flex: 1;
            min-width: 300px;
            height: 400px;
            background: linear-gradient(135deg, var(--rc1gu-primary) 0%, #002B7A 100%);
            border-radius: 24px;
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .rc1gu-security-visual::before {
            content: 'SECURE';
            font-size: 8rem;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.05);
            position: absolute;
        }

        .rc1gu-security-content {
            flex: 1.2;
            min-width: 300px;
        }

        .rc1gu-security-list {
            list-style: none;
        }

        .rc1gu-security-item {
            margin-bottom: 32px;
            padding-left: 24px;
            border-left: 4px solid var(--rc1gu-primary);
        }

        .rc1gu-security-level {
            font-weight: 700;
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        .rc1gu-security-detail {
            font-size: 0.95rem;
            color: var(--rc1gu-text-sub);
            margin-bottom: 4px;
        }

        .rc1gu-security-impl {
            font-size: 0.9rem;
            color: var(--rc1gu-primary);
            font-weight: 500;
        }

        /* 页脚 */
        .rc1gu-footer {
            background: #1D2129;
            color: #F7F8FA;
            padding: 80px 32px 40px;
        }

        .rc1gu-footer-top {
            max-width: var(--rc1gu-max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            padding-bottom: 64px;
        }

        .rc1gu-footer-brand {
            flex: 1;
            min-width: 240px;
        }

        .rc1gu-footer-brand-name {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .rc1gu-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            flex: 2;
        }

        .rc1gu-footer-group {
            min-width: 120px;
        }

        .rc1gu-footer-group h4 {
            margin-bottom: 24px;
            font-size: 1rem;
        }

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

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

        .rc1gu-footer-group a {
            color: #86909C;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.3s;
        }

        .rc1gu-footer-group a:hover {
            color: var(--rc1gu-bg-white);
        }

        .rc1gu-footer-bottom {
            max-width: var(--rc1gu-max-width);
            margin: 40px auto 0;
            text-align: center;
            color: #86909C;
            font-size: 0.85rem;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .rc1gu-nav-container {
                height: auto;
                padding: 16px;
            }
            .rc1gu-nav-menu {
                margin-top: 16px;
                gap: 12px;
            }
            .rc1gu-hero {
                padding-top: 120px;
            }
            .rc1gu-solution-container {
                grid-template-columns: 1fr;
            }
            .rc1gu-security-row {
                flex-direction: column;
            }
            .rc1gu-security-visual {
                height: 250px;
                width: 100%;
            }
        }