:root {
            --rc1gu-primary: #d42e22;
            --rc1gu-primary-dark: #b02218;
            --rc1gu-accent: #ff6a00;
            --rc1gu-bg-light: #f8f9fa;
            --rc1gu-text-main: #1d1d1f;
            --rc1gu-text-muted: #86868b;
            --rc1gu-white: #ffffff;
            --rc1gu-shadow: 0 8px 30px rgba(0,0,0,0.08);
            --rc1gu-radius: 16px;
            --rc1gu-max-width: 1400px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            background-color: var(--rc1gu-bg-light);
            color: var(--rc1gu-text-main);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

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

        /* Layout Utilities */
        .rc1gu-container {
            max-width: var(--rc1gu-max-width);
            margin: 0 auto;
            padding: 0 48px;
        }

        @media (max-width: 768px) {
            .rc1gu-container {
                padding: 0 24px;
            }
        }

        /* Navigation */
        .rc1gu-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .rc1gu-nav-container {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            max-width: var(--rc1gu-max-width);
            margin: 0 auto;
            padding: 0 48px;
        }

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

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

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

        .rc1gu-nav-item a {
            font-size: 15px;
            font-weight: 500;
            color: var(--rc1gu-text-main);
            padding: 8px 4px;
            position: relative;
        }

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

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

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

        /* Hero Section */
        .rc1gu-hero {
            padding-top: 160px;
            padding-bottom: 80px;
            background: radial-gradient(circle at top right, #fff5f5, transparent);
            text-align: center;
        }

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

        .rc1gu-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            color: var(--rc1gu-text-main);
        }

        .rc1gu-hero-subtitle {
            font-size: clamp(1.1rem, 1vw + 0.5rem, 1.35rem);
            color: var(--rc1gu-text-muted);
            margin-bottom: 48px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .rc1gu-search-box {
            display: flex;
            flex-wrap: wrap;
            background: var(--rc1gu-white);
            padding: 8px;
            border-radius: 50px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.06);
            max-width: 600px;
            margin: 0 auto 32px;
            border: 1px solid rgba(0,0,0,0.05);
        }

        .rc1gu-search-input {
            flex: 1;
            min-width: 200px;
            border: none;
            padding: 12px 24px;
            font-size: 16px;
            outline: none;
            border-radius: 50px;
        }

        .rc1gu-search-btn {
            background: var(--rc1gu-primary);
            color: var(--rc1gu-white);
            border: none;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s;
        }

        .rc1gu-search-btn:hover {
            background: var(--rc1gu-primary-dark);
            transform: scale(1.02);
        }

        /* Template Gallery */
        .rc1gu-gallery-section {
            padding: 64px 0;
        }

        .rc1gu-filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 40px;
            justify-content: center;
        }

        .rc1gu-filter-chip {
            padding: 8px 20px;
            background: var(--rc1gu-white);
            border: 1px solid #e5e5e7;
            border-radius: 30px;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .rc1gu-filter-chip:hover, .rc1gu-filter-chip.active {
            background: var(--rc1gu-text-main);
            color: var(--rc1gu-white);
            border-color: var(--rc1gu-text-main);
        }

        .rc1gu-template-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 32px;
        }

        .rc1gu-template-card {
            background: var(--rc1gu-white);
            border-radius: var(--rc1gu-radius);
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
            border: 1px solid rgba(0,0,0,0.03);
            position: relative;
        }

        .rc1gu-template-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--rc1gu-shadow);
        }

        .rc1gu-card-image {
            width: 100%;
            height: 200px;
            background: #eee;
            position: relative;
            overflow: hidden;
        }

        .rc1gu-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .rc1gu-card-badge {
            position: absolute;
            top: 12px;
            right: 12px;
            background: rgba(0,0,0,0.6);
            color: white;
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            backdrop-filter: blur(5px);
        }

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

        .rc1gu-card-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--rc1gu-text-main);
        }

        .rc1gu-card-meta {
            font-size: 13px;
            color: var(--rc1gu-text-muted);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .rc1gu-download-icon {
            color: var(--rc1gu-primary);
            font-weight: 600;
        }

        /* Industry Solutions Flow */
        .rc1gu-solutions {
            background: var(--rc1gu-text-main);
            color: var(--rc1gu-white);
            padding: 96px 0;
            margin-top: 64px;
        }

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

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

        .rc1gu-flow-container {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
        }

        .rc1gu-flow-item {
            flex: 1;
            min-width: 300px;
            background: rgba(255,255,255,0.05);
            padding: 40px;
            border-radius: var(--rc1gu-radius);
            border: 1px solid rgba(255,255,255,0.1);
            transition: background 0.3s;
        }

        .rc1gu-flow-item:hover {
            background: rgba(255,255,255,0.08);
        }

        .rc1gu-flow-sector {
            color: var(--rc1gu-accent);
            font-size: 14px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 16px;
            display: block;
        }

        .rc1gu-flow-workflow {
            font-size: 1.1rem;
            margin-bottom: 24px;
            opacity: 0.9;
        }

        .rc1gu-flow-advantage {
            font-size: 0.9rem;
            color: var(--rc1gu-text-muted);
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
        }

        /* Security Grid */
        .rc1gu-security {
            padding: 96px 0;
        }

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

        .rc1gu-security-card {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            min-width: 0;
        }

        .rc1gu-security-info {
            flex: 1;
            min-width: 0;
        }

        .rc1gu-security-level {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--rc1gu-primary);
        }

        .rc1gu-security-detail {
            font-size: 15px;
            color: var(--rc1gu-text-main);
            margin-bottom: 8px;
            font-weight: 500;
        }

        .rc1gu-security-impl {
            font-size: 14px;
            color: var(--rc1gu-text-muted);
        }

        /* Dynamic Content Section */
        .rc1gu-dynamic-section {
            padding: 64px 0;
            background: #fff;
        }

        /* Footer */
        .rc1gu-footer {
            background: var(--rc1gu-bg-light);
            padding: 80px 0 40px;
            border-top: 1px solid #e5e5e7;
        }

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

        .rc1gu-footer-brand {
            grid-column: span 2;
        }

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

        .rc1gu-footer-title {
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 24px;
            text-transform: uppercase;
            color: var(--rc1gu-text-main);
        }

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

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

        .rc1gu-footer-links a {
            font-size: 14px;
            color: var(--rc1gu-text-muted);
        }

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

        .rc1gu-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(0,0,0,0.05);
            font-size: 13px;
            color: var(--rc1gu-text-muted);
        }

        /* Mobile Responsiveness */
        @media (max-width: 992px) {
            .rc1gu-nav-menu {
                display: none; /* In a real site, implement a hamburger menu */
            }
            .rc1gu-footer-brand {
                grid-column: span 1;
            }
        }

        @media (max-width: 768px) {
            .rc1gu-hero {
                padding-top: 120px;
            }
            .rc1gu-security-grid {
                grid-template-columns: 1fr;
            }
        }