/* 基础变量与重置 */
        :root {
            --rc1gu-primary: #1890ff;
            --rc1gu-primary-dark: #096dd9;
            --rc1gu-accent: #ff4d4f;
            --rc1gu-bg: #ffffff;
            --rc1gu-text: #262626;
            --rc1gu-text-secondary: #595959;
            --rc1gu-gray-100: #f5f5f5;
            --rc1gu-gray-200: #e8e8e8;
            --rc1gu-radius: 16px;
            --rc1gu-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --rc1gu-container-width: 1400px;
        }

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

        body {
            font-family: "Inter", "Microsoft YaHei", sans-serif;
            color: var(--rc1gu-text);
            line-height: 1.6;
            background-color: var(--rc1gu-bg);
            overflow-x: hidden;
            word-break: keep-all;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        /* 导航系统 */
        .rc1gu-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .rc1gu-nav-container {
            max-width: var(--rc1gu-container-width);
            margin: 0 auto;
            padding: 16px 32px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .rc1gu-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .rc1gu-logo img {
            height: 36px;
        }

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

        .rc1gu-nav-link {
            padding: 8px 16px;
            font-weight: 500;
            color: var(--rc1gu-text-secondary);
            border-radius: 8px;
            font-size: 15px;
        }

        .rc1gu-nav-link:hover {
            color: var(--rc1gu-primary);
            background: var(--rc1gu-gray-100);
        }

        .rc1gu-nav-link.rc1gu-active {
            color: var(--rc1gu-primary);
            background: rgba(24, 144, 255, 0.1);
        }

        /* Hero 区块 - 独特居中图层布局 */
        .rc1gu-hero {
            position: relative;
            padding-top: 120px;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #000;
            overflow: hidden;
        }

        .rc1gu-hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.6;
        }

        .rc1gu-hero-content {
            position: relative;
            z-index: 10;
            max-width: 900px;
            text-align: center;
            padding: 48px;
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 32px;
            margin: 0 24px;
            word-break: break-word;
        }

        .rc1gu-hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: var(--rc1gu-primary);
            border-radius: 100px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .rc1gu-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            white-space: normal;
        }

        .rc1gu-hero-subtitle {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.4rem);
            opacity: 0.9;
            max-width: 700px;
            margin: 0 auto 40px;
            line-height: 1.6;
        }

        /* 按钮设计 */
        .rc1gu-btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .rc1gu-btn {
            padding: 16px 40px;
            border-radius: 100px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .rc1gu-btn-primary {
            background: linear-gradient(135deg, var(--rc1gu-primary), #40a9ff);
            color: #fff;
            box-shadow: 0 10px 20px rgba(24, 144, 255, 0.3);
        }

        .rc1gu-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(24, 144, 255, 0.4);
        }

        /* AI 助手区块 - 侧边图文混排 */
        .rc1gu-section {
            padding: 96px 32px;
            max-width: var(--rc1gu-container-width);
            margin: 0 auto;
        }

        .rc1gu-flex-row {
            display: flex;
            align-items: center;
            gap: 64px;
            flex-wrap: wrap;
        }

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

        .rc1gu-section-label {
            color: var(--rc1gu-primary);
            font-weight: 700;
            margin-bottom: 16px;
            display: block;
            font-size: 14px;
            letter-spacing: 2px;
        }

        .rc1gu-section-title {
            font-size: clamp(1.8rem, 3vw, 2.8rem);
            margin-bottom: 24px;
            font-weight: 700;
            color: var(--rc1gu-text);
        }

        .rc1gu-text-p {
            font-size: 1.1rem;
            color: var(--rc1gu-text-secondary);
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .rc1gu-img-wrapper {
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--rc1gu-shadow);
        }

        .rc1gu-img-wrapper img {
            transition: transform 0.6s ease;
        }

        .rc1gu-img-wrapper:hover img {
            transform: scale(1.05);
        }

        /* 安全系统 - 网格布局 */
        .rc1gu-bg-light {
            background-color: var(--rc1gu-gray-100);
        }

        .rc1gu-grid-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
            margin-top: 48px;
        }

        .rc1gu-security-card {
            background: #fff;
            padding: 40px;
            border-radius: var(--rc1gu-radius);
            border: 1px solid var(--rc1gu-gray-200);
            transition: all 0.3s ease;
            min-width: 0;
            word-break: break-word;
        }

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

        .rc1gu-card-icon {
            font-size: 32px;
            margin-bottom: 24px;
            color: var(--rc1gu-primary);
            background: rgba(24, 144, 255, 0.1);
            width: 64px;
            height: 64px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
        }

        .rc1gu-card-title {
            font-size: 1.4rem;
            margin-bottom: 16px;
            font-weight: 700;
        }

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

        /* 行业方案 - 交错式布局 */
        .rc1gu-solution-item {
            display: flex;
            gap: 48px;
            margin-bottom: 64px;
            align-items: flex-start;
            flex-wrap: wrap;
        }

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

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

        .rc1gu-advantage-box {
            background: #fff;
            padding: 24px;
            border-left: 4px solid var(--rc1gu-primary);
            margin-top: 24px;
            border-radius: 4px 12px 12px 4px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.03);
        }

        /* UI 展示区 */
        .rc1gu-ui-preview {
            text-align: center;
            padding: 96px 0;
            background: radial-gradient(circle at center, #f0f7ff 0%, #ffffff 70%);
        }

        .rc1gu-ui-img {
            max-width: 1100px;
            margin: 48px auto 0;
            border-radius: 20px;
            box-shadow: 0 30px 60px rgba(0,0,0,0.12);
            border: 8px solid #fff;
        }

        /* 页脚设计 */
        .rc1gu-footer {
            background: #141414;
            color: rgba(255,255,255,0.7);
            padding: 80px 32px 40px;
        }

        .rc1gu-footer-container {
            max-width: var(--rc1gu-container-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
        }

        .rc1gu-footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 24px;
        }

        .rc1gu-footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 24px;
        }

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

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

        .rc1gu-footer-link:hover {
            color: var(--rc1gu-primary);
            padding-left: 4px;
        }

        .rc1gu-footer-bottom {
            margin-top: 80px;
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .rc1gu-flex-row {
                gap: 32px;
            }
            .rc1gu-nav-container {
                padding: 12px 16px;
                justify-content: center;
            }
            .rc1gu-nav-menu {
                justify-content: center;
                margin-top: 12px;
            }
            .rc1gu-hero-content {
                padding: 32px 20px;
            }
            .rc1gu-section {
                padding: 64px 20px;
            }
            .rc1gu-flex-item {
                flex: 0 0 100%;
            }
            .rc1gu-solution-item {
                flex-direction: column !important;
            }
        }