:root {
            --rzm18-google-blue: #4285F4;
            --rzm18-google-red: #EA4335;
            --rzm18-google-yellow: #FBBC05;
            --rzm18-google-green: #34A853;
            --rzm18-text-main: #202124;
            --rzm18-text-sub: #5f6368;
            --rzm18-bg-light: #ffffff;
            --rzm18-bg-accent: #f8f9fa;
            --rzm18-border-radius: 16px;
            --rzm18-container-width: 1300px;
            --rzm18-transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
        }

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

        body {
            font-family: "Segoe UI", "Roboto", "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--rzm18-text-main);
            background-color: var(--rzm18-bg-light);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Layout Helpers */
        .rzm18-container {
            max-width: var(--rzm18-container-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .rzm18-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .rzm18-flex > * {
            min-width: 0;
        }

        /* Navigation */
        .rzm18-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 12px 0;
        }

        .rzm18-nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .rzm18-logo {
            flex: 0 0 auto;
            height: 40px;
        }

        .rzm18-logo img {
            height: 100%;
            width: auto;
            object-fit: contain;
        }

        .rzm18-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
        }

        .rzm18-menu a {
            text-decoration: none;
            color: var(--rzm18-text-sub);
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 50px;
            transition: var(--rzm18-transition);
            font-size: clamp(0.875rem, 1vw + 0.5rem, 1rem);
        }

        .rzm18-menu a:hover {
            background-color: var(--rzm18-bg-accent);
            color: var(--rzm18-google-blue);
        }

        .rzm18-menu a.rzm18-active {
            background-color: var(--rzm18-google-blue);
            color: #fff;
        }

        /* Hero Section */
        .rzm18-hero {
            padding: 96px 0;
            background: radial-gradient(circle at top right, rgba(66, 133, 244, 0.05), transparent),
                        radial-gradient(circle at bottom left, rgba(52, 168, 83, 0.05), transparent);
            text-align: center;
            position: relative;
        }

        .rzm18-hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .rzm18-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            color: var(--rzm18-text-main);
            letter-spacing: -0.02em;
        }

        .rzm18-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.4rem);
            color: var(--rzm18-text-sub);
            margin-bottom: 40px;
            line-height: 1.6;
        }

        /* Visual Focal Block (Unique Design) */
        .rzm18-skin-showcase {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 64px;
        }

        .rzm18-skin-card {
            background: #fff;
            border-radius: var(--rzm18-border-radius);
            padding: 32px;
            border: 1px solid rgba(0,0,0,0.06);
            transition: var(--rzm18-transition);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            text-align: left;
        }

        .rzm18-skin-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border-color: var(--rzm18-google-blue);
        }

        .rzm18-skin-icon {
            width: 56px;
            height: 56px;
            border-radius: 12px;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: white;
        }

        .rzm18-skin-card h3 {
            font-size: 1.5rem;
            margin-bottom: 12px;
            color: var(--rzm18-text-main);
        }

        .rzm18-skin-card p {
            color: var(--rzm18-text-sub);
            font-size: 1rem;
        }

        /* Content Sections */
        .rzm18-section {
            padding: 96px 0;
        }

        .rzm18-section-dark {
            background-color: #202124;
            color: #fff;
        }

        .rzm18-grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 64px;
            align-items: center;
        }

        .rzm18-feature-visual {
            background: linear-gradient(135deg, var(--rzm18-google-blue), #8ab4f8);
            border-radius: var(--rzm18-border-radius);
            aspect-ratio: 16/10;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 30px 60px rgba(66, 133, 244, 0.2);
        }

        .rzm18-feature-visual.rzm18-v-green { background: linear-gradient(135deg, var(--rzm18-google-green), #81c995); }
        .rzm18-feature-visual.rzm18-v-red { background: linear-gradient(135deg, var(--rzm18-google-red), #f28b82); }

        .rzm18-section-title {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.5rem);
            margin-bottom: 24px;
            font-weight: 700;
        }

        /* Defense Matrix Table */
        .rzm18-matrix-container {
            margin-top: 48px;
            overflow-x: auto;
            border-radius: 12px;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .rzm18-matrix-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .rzm18-matrix-table th, .rzm18-matrix-table td {
            padding: 20px;
            text-align: left;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .rzm18-matrix-table th {
            background: rgba(255,255,255,0.05);
            color: var(--rzm18-google-yellow);
            font-weight: 600;
        }

        /* Footer */
        .rzm18-footer {
            padding: 80px 0 40px;
            background-color: #f8f9fa;
            border-top: 1px solid rgba(0,0,0,0.05);
        }

        .rzm18-footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 48px;
            margin-bottom: 64px;
        }

        .rzm18-footer-brand h2 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--rzm18-google-blue);
        }

        .rzm18-footer-links h4 {
            margin-bottom: 20px;
            font-size: 1rem;
            color: var(--rzm18-text-main);
        }

        .rzm18-footer-links ul {
            list-style: none;
        }

        .rzm18-footer-links li {
            margin-bottom: 12px;
        }

        .rzm18-footer-links a {
            text-decoration: none;
            color: var(--rzm18-text-sub);
            transition: color 0.3s;
        }

        .rzm18-footer-links a:hover {
            color: var(--rzm18-google-blue);
        }

        .rzm18-footer-bottom {
            padding-top: 32px;
            border-top: 1px solid rgba(0,0,0,0.05);
            text-align: center;
            color: var(--rzm18-text-sub);
            font-size: 0.875rem;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .rzm18-footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .rzm18-grid-2 {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .rzm18-nav-wrapper {
                flex-direction: column;
                gap: 16px;
            }
            .rzm18-menu {
                justify-content: center;
            }
            .rzm18-hero {
                padding: 64px 0;
            }
            .rzm18-footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Dynamic Section Marker */
        [data-dynamic-content="latest-articles"] {
            position: relative;
        }