:root {
            --hjuo-primary: #4285F4;
            --hjuo-red: #EA4335;
            --hjuo-yellow: #FBBC05;
            --hjuo-green: #34A853;
            --hjuo-dark: #202124;
            --hjuo-gray: #5f6368;
            --hjuo-light: #f8f9fa;
            --hjuo-white: #ffffff;
            --hjuo-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --hjuo-spacing-unit: 8px;
            --hjuo-container-width: 1300px;
        }

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

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

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

        .hjuo-text-fluid {
            font-size: clamp(1rem, 1vw + 0.5rem, 1.25rem);
            line-height: 1.8;
        }

        .hjuo-title-hero {
            font-size: clamp(2.5rem, 5vw + 1rem, 5rem);
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: calc(var(--hjuo-spacing-unit) * 3);
        }

        .hjuo-title-section {
            font-size: clamp(1.8rem, 3vw + 0.5rem, 3rem);
            margin-bottom: calc(var(--hjuo-spacing-unit) * 4);
            text-align: center;
        }

        /* Navigation */
        .hjuo-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            padding: calc(var(--hjuo-spacing-unit) * 2) 0;
        }

        .hjuo-nav-container {
            max-width: var(--hjuo-container-width);
            margin: 0 auto;
            padding: 0 5vw;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
        }

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

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

        .hjuo-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: calc(var(--hjuo-spacing-unit) * 3);
        }

        .hjuo-nav-item a {
            text-decoration: none;
            color: var(--hjuo-gray);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--hjuo-transition);
            padding: calc(var(--hjuo-spacing-unit) * 1) calc(var(--hjuo-spacing-unit) * 1.5);
            border-radius: 8px;
        }

        .hjuo-nav-item a:hover {
            color: var(--hjuo-primary);
            background: rgba(66, 133, 244, 0.05);
        }

        .hjuo-nav-item a.hjuo-active {
            color: var(--hjuo-primary);
            background: rgba(66, 133, 244, 0.1);
        }

        /* Hero Section - Unique Diagonal Layout */
        .hjuo-hero {
            position: relative;
            padding: 160px 0 100px;
            min-height: 90vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: var(--hjuo-light);
        }

        .hjuo-hero-inner {
            max-width: var(--hjuo-container-width);
            margin: 0 auto;
            padding: 0 5vw;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hjuo-hero-content {
            flex: 1;
            min-width: 300px;
            padding-right: calc(var(--hjuo-spacing-unit) * 6);
        }

        .hjuo-hero-visual {
            flex: 1.2;
            min-width: 320px;
            position: relative;
        }

        .hjuo-hero-visual img {
            width: 100%;
            height: auto;
            border-radius: 24px;
            box-shadow: 0 30px 60px rgba(0,0,0,0.12);
            transform: perspective(1000px) rotateY(-5deg);
            transition: var(--hjuo-transition);
        }

        .hjuo-hero-visual img:hover {
            transform: perspective(1000px) rotateY(0deg) translateY(-10px);
        }

        .hjuo-badge {
            display: inline-block;
            padding: 6px 16px;
            background: var(--hjuo-primary);
            color: white;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 24px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Engine Architecture - Grid */
        .hjuo-section {
            padding: calc(var(--hjuo-spacing-unit) * 12) 5vw;
            max-width: var(--hjuo-container-width);
            margin: 0 auto;
        }

        .hjuo-engine-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: calc(var(--hjuo-spacing-unit) * 4);
            margin-top: calc(var(--hjuo-spacing-unit) * 6);
        }

        .hjuo-card {
            background: var(--hjuo-white);
            padding: calc(var(--hjuo-spacing-unit) * 5);
            border-radius: 20px;
            border: 1px solid rgba(0,0,0,0.06);
            transition: var(--hjuo-transition);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .hjuo-card:hover {
            transform: translateY(-12px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border-color: var(--hjuo-primary);
        }

        .hjuo-card-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .hjuo-card-title {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--hjuo-dark);
        }

        .hjuo-card-tech {
            font-size: 0.9rem;
            color: var(--hjuo-primary);
            margin-top: auto;
            padding-top: 16px;
            font-weight: 600;
        }

        /* Sync Feature - Overlapping Layout */
        .hjuo-sync-section {
            background: #000;
            color: white;
            border-radius: 40px;
            margin: 64px 5vw;
            padding: calc(var(--hjuo-spacing-unit) * 10);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            overflow: hidden;
        }

        .hjuo-sync-image {
            flex: 1;
            min-width: 300px;
            margin: -80px 0;
        }

        .hjuo-sync-image img {
            max-width: 120%;
            height: auto;
            filter: drop-shadow(0 20px 50px rgba(66, 133, 244, 0.3));
        }

        .hjuo-sync-text {
            flex: 1;
            min-width: 300px;
            padding: calc(var(--hjuo-spacing-unit) * 4);
        }

        /* User Flow - Step Cards */
        .hjuo-flow-container {
            display: flex;
            flex-wrap: wrap;
            gap: calc(var(--hjuo-spacing-unit) * 3);
            justify-content: center;
        }

        .hjuo-step {
            flex: 1;
            min-width: 280px;
            background: var(--hjuo-light);
            padding: calc(var(--hjuo-spacing-unit) * 4);
            border-radius: 16px;
            position: relative;
        }

        .hjuo-step-num {
            position: absolute;
            top: -20px;
            left: 20px;
            width: 40px;
            height: 40px;
            background: var(--hjuo-dark);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-weight: bold;
        }

        /* Footer */
        .hjuo-footer {
            background: var(--hjuo-light);
            padding: calc(var(--hjuo-spacing-unit) * 8) 5vw;
            margin-top: 64px;
        }

        .hjuo-footer-content {
            max-width: var(--hjuo-container-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }

        .hjuo-footer-brand {
            flex: 1;
            min-width: 250px;
        }

        .hjuo-footer-brand-name {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--hjuo-primary);
        }

        .hjuo-footer-links {
            flex: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            min-width: 300px;
        }

        .hjuo-footer-col h4 {
            margin-bottom: 20px;
            font-size: 1rem;
        }

        .hjuo-footer-col ul {
            list-style: none;
        }

        .hjuo-footer-col li {
            margin-bottom: 10px;
        }

        .hjuo-footer-col a {
            color: var(--hjuo-gray);
            text-decoration: none;
            font-size: 0.9rem;
            transition: var(--hjuo-transition);
        }

        .hjuo-footer-col a:hover {
            color: var(--hjuo-primary);
        }

        .hjuo-copyright {
            width: 100%;
            padding-top: calc(var(--hjuo-spacing-unit) * 4);
            margin-top: calc(var(--hjuo-spacing-unit) * 4);
            border-top: 1px solid rgba(0,0,0,0.05);
            font-size: 0.85rem;
            color: var(--hjuo-gray);
            text-align: center;
        }

        /* Buttons */
        .hjuo-btn {
            display: inline-block;
            padding: 16px 36px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--hjuo-transition);
            cursor: pointer;
            border: none;
            text-align: center;
        }

        .hjuo-btn-primary {
            background: linear-gradient(135deg, var(--hjuo-primary), #1a73e8);
            color: white;
            box-shadow: 0 10px 20px rgba(66, 133, 244, 0.3);
        }

        .hjuo-btn-primary:hover {
            transform: scale(1.05);
            box-shadow: 0 15px 30px rgba(66, 133, 244, 0.4);
        }

        /* Responsive */
        @media (max-width: 768px) {
            .hjuo-nav-menu {
                display: none; /* In real project, implement a hamburger menu */
            }
            .hjuo-hero-inner {
                flex-direction: column;
                text-align: center;
            }
            .hjuo-hero-content {
                padding-right: 0;
                margin-bottom: 48px;
            }
            .hjuo-sync-section {
                padding: 40px 24px;
                margin: 32px 16px;
            }
            .hjuo-sync-image {
                margin: 0 0 32px 0;
            }
            .hjuo-sync-image img {
                max-width: 100%;
            }
        }