/* 变量定义 */
        :root {
            --rc1gu-primary: #0052D9;
            --rc1gu-primary-dark: #003EB3;
            --rc1gu-accent: #00D3FF;
            --rc1gu-bg-light: #F5F7FA;
            --rc1gu-bg-dark: #0A192F;
            --rc1gu-text-main: #1D2129;
            --rc1gu-text-muted: #4E5969;
            --rc1gu-white: #FFFFFF;
            --rc1gu-glass: rgba(255, 255, 255, 0.8);
            --rc1gu-shadow: 0 8px 32px rgba(0, 82, 217, 0.1);
            --rc1gu-radius: 16px;
            --rc1gu-max-width: 1320px;
        }

        /* 基础重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-font-smoothing: antialiased;
        }

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

        /* 导航栏 */
        .rc1gu-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: var(--rc1gu-glass);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .rc1gu-nav-container {
            max-width: var(--rc1gu-max-width);
            margin: 0 auto;
            padding: 0 24px;
            height: 80px;
            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: 40px;
            width: auto;
        }

        .rc1gu-nav-menu {
            display: flex;
            list-style: none;
            gap: 8px;
            flex-wrap: wrap;
            min-width: 0;
        }

        .rc1gu-nav-link {
            text-decoration: none;
            color: var(--rc1gu-text-muted);
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .rc1gu-nav-link:hover {
            color: var(--rc1gu-primary);
            background: rgba(0, 82, 217, 0.05);
        }

        .rc1gu-nav-link.active {
            color: var(--rc1gu-primary);
            background: rgba(0, 82, 217, 0.1);
        }

        /* Hero 下载控制台 */
        .rc1gu-hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: radial-gradient(circle at 80% 20%, rgba(0, 82, 217, 0.05) 0%, transparent 40%),
                        linear-gradient(180deg, #FFFFFF 0%, #F5F7FA 100%);
            position: relative;
        }

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

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

        .rc1gu-badge {
            display: inline-block;
            padding: 6px 12px;
            background: rgba(0, 82, 217, 0.1);
            color: var(--rc1gu-primary);
            border-radius: 50px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .rc1gu-hero-title {
            font-size: clamp(2.5rem, 5vw, 4rem);
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--rc1gu-text-main);
            word-break: keep-all;
        }

        .rc1gu-hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.25rem);
            color: var(--rc1gu-text-muted);
            max-width: 600px;
            margin-bottom: 40px;
        }

        /* 下载面板卡片 */
        .rc1gu-download-panel {
            flex: 0 1 480px;
            min-width: 320px;
            background: var(--rc1gu-white);
            border-radius: 24px;
            padding: 40px;
            box-shadow: 0 20px 80px rgba(0, 82, 217, 0.08);
            border: 1px solid rgba(0, 82, 217, 0.05);
            position: relative;
        }

        .rc1gu-platform-tabs {
            display: flex;
            gap: 12px;
            margin-bottom: 32px;
            border-bottom: 1px solid #EDF2F7;
            padding-bottom: 16px;
            flex-wrap: wrap;
        }

        .rc1gu-tab-btn {
            background: none;
            border: none;
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 600;
            color: var(--rc1gu-text-muted);
            cursor: pointer;
            border-radius: 8px;
            transition: all 0.3s;
        }

        .rc1gu-tab-btn.active {
            background: var(--rc1gu-primary);
            color: var(--rc1gu-white);
        }

        .rc1gu-download-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            padding: 20px;
            background: linear-gradient(135deg, var(--rc1gu-primary) 0%, var(--rc1gu-primary-dark) 100%);
            color: var(--rc1gu-white);
            text-decoration: none;
            border-radius: 12px;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 24px;
            transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
            box-shadow: 0 10px 20px rgba(0, 82, 217, 0.2);
        }

        .rc1gu-download-btn:hover {
            transform: translateY(-4px);
            box-shadow: 0 15px 30px rgba(0, 82, 217, 0.3);
        }

        .rc1gu-version-info {
            display: flex;
            justify-content: space-between;
            font-size: 14px;
            color: var(--rc1gu-text-muted);
            padding: 16px;
            background: var(--rc1gu-bg-light);
            border-radius: 12px;
        }

        /* 行业解决方案流 */
        .rc1gu-section {
            padding: 96px 24px;
            max-width: var(--rc1gu-max-width);
            margin: 0 auto;
        }

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

        .rc1gu-section-title {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .rc1gu-solution-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
            gap: 32px;
        }

        .rc1gu-solution-card {
            background: var(--rc1gu-white);
            border-radius: 20px;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            border: 1px solid #EDF2F7;
            transition: all 0.3s ease;
            min-width: 0;
        }

        .rc1gu-solution-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 24px 48px rgba(0, 0, 0, 0.05);
            border-color: var(--rc1gu-primary);
        }

        .rc1gu-solution-content {
            padding: 32px;
        }

        .rc1gu-solution-tag {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--rc1gu-primary);
            font-weight: 700;
            margin-bottom: 12px;
            display: block;
        }

        .rc1gu-solution-card h3 {
            font-size: 24px;
            margin-bottom: 16px;
        }

        .rc1gu-workflow-item {
            margin-top: 24px;
            padding-top: 24px;
            border-top: 1px dashed #EDF2F7;
        }

        .rc1gu-workflow-label {
            font-weight: 600;
            color: var(--rc1gu-primary);
            font-size: 14px;
            margin-bottom: 8px;
            display: block;
        }

        /* 企业武装安全系统 - 独特布局 */
        .rc1gu-armor-bg {
            background-color: var(--rc1gu-bg-dark);
            color: var(--rc1gu-white);
            border-radius: 40px;
            padding: 80px 48px;
            margin: 48px 24px;
            position: relative;
            overflow: hidden;
        }

        .rc1gu-armor-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            position: relative;
            z-index: 2;
        }

        .rc1gu-armor-card {
            flex: 1;
            min-width: 300px;
            background: rgba(255, 255, 255, 0.05);
            padding: 40px;
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .rc1gu-armor-level {
            font-size: 14px;
            color: var(--rc1gu-accent);
            font-weight: 700;
            margin-bottom: 16px;
            display: block;
        }

        .rc1gu-armor-card h4 {
            font-size: 22px;
            margin-bottom: 16px;
        }

        .rc1gu-armor-detail {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }

        .rc1gu-implementation {
            background: rgba(0, 211, 255, 0.1);
            padding: 12px 16px;
            border-radius: 8px;
            font-size: 13px;
            color: var(--rc1gu-accent);
        }

        /* 页脚 */
        .rc1gu-footer {
            background: #F8FAFC;
            padding: 80px 24px 40px;
            border-top: 1px solid #EDF2F7;
        }

        .rc1gu-footer-top {
            max-width: var(--rc1gu-max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            margin-bottom: 64px;
        }

        .rc1gu-footer-brand {
            flex: 1;
            min-width: 280px;
        }

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

        .rc1gu-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            flex: 2;
        }

        .rc1gu-footer-column {
            min-width: 140px;
        }

        .rc1gu-footer-column h5 {
            font-size: 16px;
            margin-bottom: 24px;
            color: var(--rc1gu-text-main);
        }

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

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

        .rc1gu-footer-column a {
            text-decoration: none;
            color: var(--rc1gu-text-muted);
            font-size: 14px;
            transition: color 0.2s;
        }

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

        .rc1gu-footer-bottom {
            max-width: var(--rc1gu-max-width);
            margin: 0 auto;
            padding-top: 40px;
            border-top: 1px solid #EDF2F7;
            text-align: center;
            color: var(--rc1gu-text-muted);
            font-size: 14px;
        }

        /* 响应式断点 */
        @media (max-width: 1024px) {
            .rc1gu-hero-inner {
                flex-direction: column;
                text-align: center;
            }
            .rc1gu-hero-content {
                display: flex;
                flex-direction: column;
                align-items: center;
            }
            .rc1gu-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
        }

        @media (max-width: 768px) {
            .rc1gu-nav-container {
                height: auto;
                padding: 16px 24px;
            }
            .rc1gu-nav-menu {
                display: none; /* 移动端应有汉堡菜单，此处简化 */
            }
            .rc1gu-solution-grid {
                grid-template-columns: 1fr;
            }
            .rc1gu-armor-bg {
                padding: 40px 24px;
            }
        }

        /* 动画增强 */
        .rc1gu-hover-lift {
            transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
        }
        .rc1gu-hover-lift:hover {
            transform: translateY(-5px);
        }