:root {
            --hhx9et-primary: #1880C4;
            --hhx9et-primary-dark: #12669e;
            --hhx9et-accent: #00d4ff;
            --hhx9et-bg-light: #f4f7f9;
            --hhx9et-text-main: #2c3e50;
            --hhx9et-text-muted: #64748b;
            --hhx9et-white: #ffffff;
            --hhx9et-card-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --hhx9et-spacing-unit: 8px;
            --hhx9et-max-width: 1100px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: var(--hhx9et-text-main);
            background-color: var(--hhx9et-bg-light);
            word-break: break-word;
            overflow-wrap: break-word;
        }

        /* Layout Helpers */
        .hhx9et-container {
            max-width: var(--hhx9et-max-width);
            margin: 0 auto;
            padding: 0 calc(var(--hhx9et-spacing-unit) * 3);
        }

        .hhx9et-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .hhx9et-flex-child {
            min-width: 0;
        }

        /* Navigation */
        .hhx9et-nav-wrapper {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            box-shadow: 0 2px 10px rgba(0,0,0,0.02);
        }

        .hhx9et-nav {
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .hhx9et-logo img {
            height: 40px;
            width: auto;
            display: block;
        }

        .hhx9et-menu {
            list-style: none;
            gap: calc(var(--hhx9et-spacing-unit) * 3);
        }

        .hhx9et-menu a {
            text-decoration: none;
            color: var(--hhx9et-text-main);
            font-weight: 500;
            font-size: 14px;
            transition: color 0.3s ease;
            padding: var(--hhx9et-spacing-unit);
        }

        .hhx9et-menu a:hover {
            color: var(--hhx9et-primary);
        }

        .hhx9et-menu a.hhx9et-active {
            color: var(--hhx9et-primary);
            border-bottom: 2px solid var(--hhx9et-primary);
        }

        /* Hero Section - Unique Diagonal Split */
        .hhx9et-hero {
            background: linear-gradient(135deg, #1880C4 0%, #0a4a75 100%);
            color: var(--hhx9et-white);
            padding: 96px 0;
            position: relative;
            overflow: hidden;
        }

        .hhx9et-hero::after {
            content: '';
            position: absolute;
            bottom: -50px;
            right: -50px;
            width: 300px;
            height: 300px;
            background: rgba(255,255,255,0.05);
            border-radius: 50%;
        }

        .hhx9et-hero-content {
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .hhx9et-hero h1 {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            margin-bottom: 24px;
            font-weight: 800;
            word-break: keep-all;
        }

        .hhx9et-hero p {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            max-width: 800px;
            margin-bottom: 48px;
            opacity: 0.9;
        }

        .hhx9et-download-card {
            background: var(--hhx9et-white);
            color: var(--hhx9et-text-main);
            padding: 32px;
            border-radius: 16px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.2);
            width: 100%;
            max-width: 500px;
            transition: transform 0.3s ease;
        }

        .hhx9et-download-card:hover {
            transform: translateY(-5px);
        }

        .hhx9et-btn {
            display: inline-block;
            background: var(--hhx9et-primary);
            color: var(--hhx9et-white);
            padding: 16px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: bold;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            width: 100%;
            text-align: center;
        }

        .hhx9et-btn:hover {
            background: var(--hhx9et-primary-dark);
            box-shadow: 0 5px 15px rgba(24, 128, 196, 0.4);
        }

        /* Features Section */
        .hhx9et-section {
            padding: 80px 0;
        }

        .hhx9et-section-title {
            text-align: center;
            margin-bottom: 48px;
        }

        .hhx9et-section-title h2 {
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            color: var(--hhx9et-primary);
            margin-bottom: 16px;
        }

        .hhx9et-feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .hhx9et-feature-card {
            background: var(--hhx9et-white);
            padding: 32px;
            border-radius: 12px;
            border: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .hhx9et-feature-card:hover {
            box-shadow: var(--hhx9et-card-shadow);
            border-color: var(--hhx9et-primary);
        }

        .hhx9et-feature-card h3 {
            margin-bottom: 16px;
            color: var(--hhx9et-primary);
            font-size: 1.25rem;
        }

        /* Industry Scenarios Section */
        .hhx9et-industry-section {
            background: #edf2f7;
            padding: 80px 0;
        }

        .hhx9et-industry-grid {
            gap: 32px;
        }

        .hhx9et-industry-item {
            flex: 1;
            min-width: 300px;
            background: var(--hhx9et-white);
            padding: 40px;
            border-radius: 16px;
        }

        .hhx9et-badge {
            display: inline-block;
            background: var(--hhx9et-primary);
            color: var(--hhx9et-white);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .hhx9et-usecase-list {
            list-style: none;
            margin: 20px 0;
        }

        .hhx9et-usecase-list li {
            padding-left: 24px;
            position: relative;
            margin-bottom: 12px;
            font-size: 0.95rem;
        }

        .hhx9et-usecase-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #27ae60;
            font-weight: bold;
        }

        .hhx9et-config-box {
            background: #f8fafc;
            padding: 16px;
            border-left: 4px solid var(--hhx9et-accent);
            font-size: 0.9rem;
            margin-top: 24px;
        }

        /* Footer */
        .hhx9et-footer {
            background: #1a202c;
            color: rgba(255,255,255,0.7);
            padding: 64px 0 32px;
        }

        .hhx9et-footer-brand {
            color: var(--hhx9et-white);
            font-size: 24px;
            font-weight: bold;
            margin-bottom: 16px;
        }

        .hhx9et-footer-grid {
            justify-content: space-between;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding-bottom: 48px;
            margin-bottom: 32px;
        }

        .hhx9et-footer-links {
            list-style: none;
            display: flex;
            gap: 24px;
        }

        .hhx9et-footer-links a {
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            font-size: 14px;
        }

        .hhx9et-footer-links a:hover {
            color: var(--hhx9et-white);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .hhx9et-menu {
                display: none; /* In a real site, implement a hamburger menu */
            }
            .hhx9et-nav {
                justify-content: center;
            }
            .hhx9et-hero {
                padding: 64px 0;
            }
            .hhx9et-feature-grid, .hhx9et-industry-grid {
                grid-template-columns: 1fr;
            }
        }