:root {
            --rc1gu-primary: #D4232B;
            --rc1gu-primary-dark: #A81C22;
            --rc1gu-secondary: #0052D4;
            --rc1gu-text-main: #1D1D1F;
            --rc1gu-text-sub: #424245;
            --rc1gu-bg-light: #F5F5F7;
            --rc1gu-white: #FFFFFF;
            --rc1gu-max-width: 1320px;
            --rc1gu-gap-base: 8px;
            --rc1gu-radius: 16px;
            --rc1gu-transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: "SF Pro SC", "SF Pro Display", "PingFang SC", "Helvetica Neue", Helvetica, Arial, sans-serif;
            color: var(--rc1gu-text-main);
            background-color: var(--rc1gu-white);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        /* Typography */
        h1, h2, h3 {
            line-height: 1.2;
            font-weight: 700;
            word-break: keep-all;
            white-space: normal;
        }

        p {
            font-size: clamp(1rem, 0.5vw + 0.8rem, 1.125rem);
            line-height: 1.8;
            word-break: break-word;
            color: var(--rc1gu-text-sub);
        }

        /* Layout Helpers */
        .rc1gu-container {
            max-width: var(--rc1gu-max-width);
            margin: 0 auto;
            padding: 0 calc(var(--rc1gu-gap-base) * 3);
        }

        .rc1gu-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .rc1gu-grid {
            display: grid;
            gap: calc(var(--rc1gu-gap-base) * 4);
        }

        /* Navigation */
        .rc1gu-header {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }

        .rc1gu-nav-inner {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }

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

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

        .rc1gu-nav-menu {
            display: flex;
            list-style: none;
            gap: calc(var(--rc1gu-gap-base) * 4);
            flex-wrap: wrap;
            min-width: 0;
        }

        .rc1gu-nav-link {
            text-decoration: none;
            color: var(--rc1gu-text-main);
            font-size: 15px;
            font-weight: 500;
            transition: var(--rc1gu-transition);
            padding: 8px 0;
            position: relative;
        }

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

        .rc1gu-nav-link.active {
            color: var(--rc1gu-primary);
        }

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

        /* Hero Section - Unique Layered Design */
        .rc1gu-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at 90% 10%, rgba(212, 35, 43, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(0, 82, 212, 0.05) 0%, transparent 40%);
            overflow: hidden;
        }

        .rc1gu-hero-content {
            text-align: center;
            max-width: 900px;
            margin: 0 auto;
        }

        .rc1gu-hero-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(212, 35, 43, 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, 4.5rem);
            margin-bottom: 24px;
            letter-spacing: -0.02em;
            color: var(--rc1gu-text-main);
        }

        .rc1gu-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.5rem);
            color: var(--rc1gu-text-sub);
            margin-bottom: 48px;
        }

        .rc1gu-activation-card {
            background: var(--rc1gu-white);
            border-radius: 24px;
            padding: 48px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border: 1px solid rgba(0,0,0,0.03);
            margin-top: 64px;
            position: relative;
            z-index: 1;
        }

        .rc1gu-activation-input-group {
            display: flex;
            gap: 16px;
            max-width: 600px;
            margin: 0 auto;
            flex-wrap: wrap;
        }

        .rc1gu-input {
            flex: 1;
            min-width: 280px;
            height: 60px;
            border-radius: 12px;
            border: 2px solid #E5E5E7;
            padding: 0 24px;
            font-size: 18px;
            transition: var(--rc1gu-transition);
            outline: none;
        }

        .rc1gu-input:focus {
            border-color: var(--rc1gu-primary);
            box-shadow: 0 0 0 4px rgba(212, 35, 43, 0.1);
        }

        .rc1gu-btn-primary {
            height: 60px;
            padding: 0 40px;
            background: var(--rc1gu-primary);
            color: var(--rc1gu-white);
            border: none;
            border-radius: 12px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--rc1gu-transition);
            white-space: nowrap;
        }

        .rc1gu-btn-primary:hover {
            background: var(--rc1gu-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(212, 35, 43, 0.3);
        }

        /* Enterprise Armor Section */
        .rc1gu-section-armor {
            padding: 96px 0;
            background-color: #000;
            color: #fff;
        }

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

        .rc1gu-section-header h2 {
            font-size: clamp(2rem, 3vw + 1rem, 3rem);
            margin-bottom: 16px;
            color: #fff;
        }

        .rc1gu-armor-grid {
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        }

        .rc1gu-armor-card {
            background: #1A1A1B;
            padding: 40px;
            border-radius: var(--rc1gu-radius);
            border: 1px solid rgba(255,255,255,0.1);
            transition: var(--rc1gu-transition);
        }

        .rc1gu-armor-card:hover {
            border-color: var(--rc1gu-primary);
            background: #242426;
        }

        .rc1gu-armor-card h3 {
            font-size: 24px;
            margin-bottom: 16px;
            color: var(--rc1gu-primary);
        }

        .rc1gu-armor-card p {
            color: #A1A1A6;
            font-size: 16px;
            margin-bottom: 24px;
        }

        .rc1gu-armor-detail {
            font-size: 14px;
            color: #fff;
            padding-top: 16px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }

        /* Vertical Industry Solutions */
        .rc1gu-section-solutions {
            padding: 96px 0;
            background: var(--rc1gu-bg-light);
        }

        .rc1gu-solution-row {
            display: flex;
            align-items: center;
            gap: 64px;
            margin-bottom: 80px;
        }

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

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

        .rc1gu-solution-visual {
            flex: 1;
            min-width: 300px;
            background: var(--rc1gu-white);
            height: 400px;
            border-radius: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            position: relative;
            overflow: hidden;
        }

        .rc1gu-visual-placeholder {
            width: 80%;
            height: 60%;
            background: linear-gradient(135deg, #f0f0f0 0%, #e0e0e0 100%);
            border-radius: 12px;
            position: relative;
        }

        .rc1gu-visual-accent {
            position: absolute;
            width: 120px;
            height: 120px;
            background: var(--rc1gu-primary);
            opacity: 0.1;
            border-radius: 50%;
            top: -20px;
            right: -20px;
        }

        .rc1gu-solution-tag {
            color: var(--rc1gu-secondary);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            margin-bottom: 12px;
            display: block;
        }

        /* Footer */
        .rc1gu-footer {
            background: var(--rc1gu-white);
            padding: 80px 0 40px;
            border-top: 1px solid #E5E5E7;
        }

        .rc1gu-footer-top {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .rc1gu-footer-brand h4 {
            font-size: 20px;
            margin-bottom: 24px;
            color: var(--rc1gu-text-main);
        }

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

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

        .rc1gu-footer-links a {
            text-decoration: none;
            color: var(--rc1gu-text-sub);
            transition: var(--rc1gu-transition);
        }

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

        .rc1gu-footer-bottom {
            padding-top: 40px;
            border-top: 1px solid #F5F5F7;
            text-align: center;
            color: #86868B;
            font-size: 14px;
        }

        /* Dynamic Content Marker */
        .rc1gu-section-news {
            padding: 80px 0;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .rc1gu-nav-menu {
                display: none; /* In a real project, add a hamburger menu */
            }

            .rc1gu-hero {
                padding-top: 120px;
            }

            .rc1gu-activation-card {
                padding: 24px;
            }

            .rc1gu-solution-row, .rc1gu-solution-row:nth-child(even) {
                flex-direction: column;
                gap: 32px;
            }

            .rc1gu-solution-visual {
                height: 280px;
            }
        }