:root {
            --rc1gu-primary: #0052cc;
            --rc1gu-primary-dark: #003d99;
            --rc1gu-accent: #ff4d4f;
            --rc1gu-bg-light: #f8fafc;
            --rc1gu-text-main: #1e293b;
            --rc1gu-text-muted: #64748b;
            --rc1gu-white: #ffffff;
            --rc1gu-glass: rgba(255, 255, 255, 0.85);
            --rc1gu-border: rgba(226, 232, 240, 0.8);
            --rc1gu-shadow: 0 10px 30px -10px rgba(0, 82, 204, 0.1);
        }

        * {
            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: 1.7;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Layout Container */
        .rc1gu-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Navigation */
        .rc1gu-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--rc1gu-glass);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--rc1gu-border);
            height: 72px;
            display: flex;
            align-items: center;
        }

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

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

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

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

        .rc1gu-nav-item a {
            text-decoration: none;
            color: var(--rc1gu-text-main);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .rc1gu-nav-item a:hover {
            color: var(--rc1gu-primary);
            background: rgba(0, 82, 204, 0.05);
        }

        .rc1gu-nav-item a.active {
            color: var(--rc1gu-primary);
            background: rgba(0, 82, 204, 0.1);
            font-weight: 600;
        }

        /* Hero Section - Unique Diagonal Split */
        .rc1gu-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: linear-gradient(135deg, #fff 0%, #eef5ff 100%);
            position: relative;
            overflow: hidden;
        }

        .rc1gu-hero::before {
            content: '';
            position: absolute;
            top: -10%;
            right: -10%;
            width: 60%;
            height: 120%;
            background: radial-gradient(circle, rgba(0,82,204,0.03) 0%, transparent 70%);
            transform: rotate(-15deg);
        }

        .rc1gu-hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

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

        .rc1gu-hero-title {
            font-size: clamp(2.5rem, 5vw, 3.75rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            letter-spacing: -1px;
            color: #0f172a;
        }

        .rc1gu-hero-subtitle {
            font-size: clamp(1.1rem, 2vw, 1.35rem);
            color: var(--rc1gu-text-muted);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .rc1gu-download-panel {
            flex: 1;
            min-width: 320px;
            background: var(--rc1gu-white);
            padding: 40px;
            border-radius: 24px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.08);
            border: 1px solid var(--rc1gu-white);
            position: relative;
            z-index: 1;
        }

        .rc1gu-download-options {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
            margin-top: 24px;
        }

        .rc1gu-btn-main {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--rc1gu-primary);
            color: white;
            padding: 18px 32px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
            transition: transform 0.2s, background 0.3s;
            box-shadow: 0 10px 20px -5px rgba(0, 82, 204, 0.4);
        }

        .rc1gu-btn-main:hover {
            background: var(--rc1gu-primary-dark);
            transform: translateY(-2px);
        }

        .rc1gu-btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: 2px solid #e2e8f0;
            color: var(--rc1gu-text-main);
            padding: 16px 24px;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
        }

        .rc1gu-btn-outline:hover {
            border-color: var(--rc1gu-primary);
            color: var(--rc1gu-primary);
            background: rgba(0, 82, 204, 0.02);
        }

        /* Security Section - Enterprise Armor */
        .rc1gu-section {
            padding: 96px 0;
        }

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

        .rc1gu-section-tag {
            color: var(--rc1gu-primary);
            text-transform: uppercase;
            font-weight: 700;
            letter-spacing: 2px;
            font-size: 14px;
            margin-bottom: 12px;
            display: block;
        }

        .rc1gu-section-title {
            font-size: clamp(1.8rem, 4vw, 2.5rem);
            font-weight: 700;
        }

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

        .rc1gu-armor-card {
            background: var(--rc1gu-white);
            padding: 40px;
            border-radius: 20px;
            border: 1px solid var(--rc1gu-border);
            transition: all 0.3s ease;
        }

        .rc1gu-armor-card:hover {
            box-shadow: var(--rc1gu-shadow);
            transform: translateY(-5px);
        }

        .rc1gu-armor-level {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--rc1gu-primary);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .rc1gu-armor-detail {
            font-size: 15px;
            color: var(--rc1gu-text-muted);
            margin-bottom: 20px;
        }

        .rc1gu-armor-impl {
            font-size: 14px;
            padding-top: 16px;
            border-top: 1px dashed #e2e8f0;
            color: var(--rc1gu-text-main);
            font-style: italic;
        }

        /* Vertical Industry Solution */
        .rc1gu-industry-section {
            background: #0f172a;
            color: var(--rc1gu-white);
            border-radius: 48px;
            margin: 0 24px;
            padding: 80px 48px;
        }

        .rc1gu-industry-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 48px;
        }

        .rc1gu-industry-item {
            flex: 1;
            min-width: 300px;
            background: rgba(255, 255, 255, 0.05);
            padding: 32px;
            border-radius: 24px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .rc1gu-industry-sector {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 24px;
            display: block;
            border-left: 4px solid var(--rc1gu-accent);
            padding-left: 16px;
        }

        .rc1gu-industry-workflow {
            font-size: 16px;
            opacity: 0.9;
            margin-bottom: 16px;
        }

        .rc1gu-industry-advantage {
            font-size: 14px;
            color: #94a3b8;
            background: rgba(255, 255, 255, 0.05);
            padding: 12px;
            border-radius: 8px;
        }

        /* Footer */
        .rc1gu-footer {
            background: var(--rc1gu-white);
            padding: 80px 0 40px;
            border-top: 1px solid var(--rc1gu-border);
            margin-top: 64px;
        }

        .rc1gu-footer-top {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            margin-bottom: 64px;
        }

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

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

        .rc1gu-footer-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 32px;
            flex: 2;
        }

        .rc1gu-footer-column h4 {
            margin-bottom: 24px;
            font-size: 16px;
            font-weight: 700;
        }

        .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 0.3s;
        }

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

        .rc1gu-footer-bottom {
            padding-top: 32px;
            border-top: 1px solid var(--rc1gu-border);
            text-align: center;
            font-size: 14px;
            color: var(--rc1gu-text-muted);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .rc1gu-hero-content {
                flex-direction: column;
                text-align: center;
            }
            .rc1gu-hero-subtitle {
                margin-left: auto;
                margin-right: auto;
            }
            .rc1gu-nav-menu {
                display: none; /* In a real scenario, add a mobile menu toggle */
            }
        }

        @media (max-width: 768px) {
            .rc1gu-armor-grid, .rc1gu-industry-grid {
                grid-template-columns: 1fr;
            }
            .rc1gu-industry-section {
                padding: 40px 24px;
                border-radius: 24px;
            }
        }