:root {
            --primary-blue: #0066cc;
            --secondary-blue: #004499;
            --accent-orange: #ff6b35;
            --accent-green: #00cc66;
            --accent-purple: #8b5cf6;
            --dark-bg: #0f1419;
            --darker-bg: #0a0e13;
            --card-bg: rgba(255, 255, 255, 0.05);
            --border-color: rgba(255, 255, 255, 0.1);
            --text-primary: #ffffff;
            --text-secondary: #a0a9b8;
            --text-accent: #00ccff;
            --gradient-primary: linear-gradient(135deg, #0066cc, #00ccff);
            --gradient-secondary: linear-gradient(135deg, #ff6b35, #ffaa00);
            --gradient-tertiary: linear-gradient(135deg, #8b5cf6, #ec4899);
        }

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

        body {
            font-family: 'Inter', sans-serif;
            background: var(--dark-bg);
            color: var(--text-primary);
            overflow-x: hidden;
            line-height: 1.6;
        }

        /* Animated Grid Background */
        .grid-background {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            opacity: 0.1;
            background-image: 
                linear-gradient(rgba(0, 204, 255, 0.3) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 204, 255, 0.3) 1px, transparent 1px);
            background-size: 50px 50px;
            animation: gridMove 20s linear infinite;
        }

        @keyframes gridMove {
            0% { transform: translate(0, 0); }
            100% { transform: translate(50px, 50px); }
        }

        /* Floating Elements */
        .floating-elements {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            pointer-events: none;
        }

        .floating-icon {
            position: absolute;
            color: var(--text-accent);
            opacity: 0.1;
            animation: float 15s ease-in-out infinite;
        }

        .floating-icon:nth-child(1) { top: 10%; left: 10%; animation-delay: 0s; }
        .floating-icon:nth-child(2) { top: 20%; right: 15%; animation-delay: 2s; }
        .floating-icon:nth-child(3) { top: 60%; left: 5%; animation-delay: 4s; }
        .floating-icon:nth-child(4) { bottom: 20%; right: 10%; animation-delay: 6s; }
        .floating-icon:nth-child(5) { bottom: 40%; left: 20%; animation-delay: 8s; }

        @keyframes float {
            0%, 100% { transform: translateY(0px) rotate(0deg); }
            25% { transform: translateY(-20px) rotate(5deg); }
            50% { transform: translateY(10px) rotate(-3deg); }
            75% { transform: translateY(-15px) rotate(2deg); }
        }

        /* Header */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(15, 20, 25, 0.95);
            backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
            padding: 1rem 0;
        }

        .header-content {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-family: 'JetBrains Mono', monospace;
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--text-accent);
        }

        .logo i {
            font-size: 1.8rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .nav-menu {
            display: flex;
            gap: 2rem;
            list-style: none;
        }

        .nav-menu a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }

        .nav-menu a:hover {
            color: var(--text-accent);
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gradient-primary);
            transition: width 0.3s ease;
        }

        .nav-menu a:hover::after {
            width: 100%;
        }

        /* Hero Section */
        .hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            position: relative;
            padding: 2rem;
            background: radial-gradient(ellipse at center, rgba(0, 102, 204, 0.1) 0%, transparent 70%);
        }

        .hero-content {
            max-width: 1000px;
            z-index: 2;
        }

        .hero-badge {
            display: inline-block;
            padding: 0.8rem 2rem;
            background: var(--card-bg);
            border: 1px solid var(--primary-blue);
            border-radius: 50px;
            color: var(--text-accent);
            font-weight: 600;
            margin-bottom: 2rem;
            backdrop-filter: blur(10px);
            animation: pulse 3s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { box-shadow: 0 0 20px rgba(0, 204, 255, 0.3); }
            50% { box-shadow: 0 0 40px rgba(0, 204, 255, 0.6); }
        }

        .hero h1 {
            font-size: clamp(3rem, 8vw, 5.5rem);
            font-weight: 800;
            margin-bottom: 1.5rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.1;
        }

        .hero-subtitle {
            font-size: 1.4rem;
            color: var(--text-secondary);
            margin-bottom: 3rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-cta {
            display: flex;
            gap: 1.5rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 1rem 2rem;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: white;
            box-shadow: 0 10px 30px rgba(0, 102, 204, 0.4);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(0, 102, 204, 0.6);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-accent);
            border: 2px solid var(--primary-blue);
        }

        .btn-outline:hover {
            background: var(--primary-blue);
            color: white;
            transform: translateY(-3px);
        }

        /* Modules Section */
        .modules-section {
            padding: 6rem 2rem;
            max-width: 1400px;
            margin: 0 auto;
        }

        .section-header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-header h2 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 800;
            margin-bottom: 1rem;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .section-header p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        .modules-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 2rem;
            margin-bottom: 4rem;
        }

        .module-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 20px;
            padding: 2.5rem;
            position: relative;
            overflow: hidden;
            transition: all 0.4s ease;
            cursor: pointer;
            backdrop-filter: blur(10px);
        }

        .module-card:hover {
            transform: translateY(-10px);
            border-color: var(--primary-blue);
            box-shadow: 0 20px 60px rgba(0, 102, 204, 0.2);
        }

        .module-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 204, 255, 0.1), transparent);
            transition: left 0.6s ease;
        }

        .module-card:hover::before {
            left: 100%;
        }

        .module-header {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            margin-bottom: 2rem;
        }

        .module-icon {
            width: 80px;
            height: 80px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: white;
            position: relative;
        }

        .module-icon.cad { background: var(--gradient-primary); }
        .module-icon.sketchup { background: var(--gradient-secondary); }
        .module-icon.revit { background: var(--gradient-tertiary); }

        .module-info h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }

        .module-meta {
            color: var(--text-accent);
            font-weight: 500;
            font-family: 'JetBrains Mono', monospace;
        }

        .module-description {
            color: var(--text-secondary);
            margin-bottom: 2rem;
            line-height: 1.7;
        }

        .module-features {
            list-style: none;
            margin-bottom: 2rem;
        }

        .module-features li {
            padding: 0.5rem 0;
            color: var(--text-secondary);
            position: relative;
            padding-left: 2rem;
        }

        .module-features li::before {
            content: '▶';
            position: absolute;
            left: 0;
            color: var(--text-accent);
            font-size: 0.8rem;
        }

        .expand-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease;
        }

        .module-card.expanded .expand-content {
            max-height: 800px;
        }

        .expand-btn {
            background: none;
            border: 2px solid var(--primary-blue);
            color: var(--text-accent);
            padding: 0.8rem 2rem;
            border-radius: 25px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-weight: 600;
            width: 100%;
        }

        .expand-btn:hover {
            background: var(--primary-blue);
            color: white;
        }

        .detailed-topics {
            margin-top: 2rem;
            padding-top: 2rem;
            border-top: 1px solid var(--border-color);
        }

        .topics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1rem;
            margin-top: 1rem;
        }

        .topic-item {
            background: rgba(0, 102, 204, 0.1);
            padding: 1rem;
            border-radius: 10px;
            border-left: 3px solid var(--primary-blue);
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* Interactive 3D Showcase */
        .showcase-section {
            padding: 6rem 2rem;
            background: rgba(0, 0, 0, 0.3);
            position: relative;
        }

        .showcase-container {
            max-width: 1400px;
            margin: 0 auto;
            text-align: center;
        }

        .showcase-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .showcase-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 15px;
            padding: 2rem;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .showcase-item:hover {
            transform: scale(1.05);
            border-color: var(--accent-orange);
            box-shadow: 0 15px 40px rgba(255, 107, 53, 0.2);
        }

        .showcase-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
            background: var(--gradient-secondary);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .showcase-item h4 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .showcase-item p {
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Benefits Section */
        .benefits-section {
            padding: 6rem 2rem;
            max-width: 1400px;
            margin: 0 auto;
        }

        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .benefit-card {
            text-align: center;
            padding: 2rem;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 15px;
            transition: all 0.3s ease;
        }

        .benefit-card:hover {
            transform: translateY(-5px);
            border-color: var(--accent-green);
            box-shadow: 0 15px 30px rgba(0, 204, 102, 0.2);
        }

        .benefit-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 1.5rem;
            background: var(--gradient-primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: white;
        }

        .benefit-card h4 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .benefit-card p {
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* CTA Section */
        .cta-section {
            padding: 6rem 2rem;
            text-align: center;
            background: linear-gradient(135deg, rgba(0, 102, 204, 0.1), rgba(0, 204, 255, 0.1));
            position: relative;
        }

        .cta-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .cta-section h2 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 800;
            margin-bottom: 1.5rem;
            color: var(--text-primary);
        }

        .cta-section p {
            font-size: 1.3rem;
            color: var(--text-secondary);
            margin-bottom: 3rem;
        }

        /* Footer */
        .footer {
            background-color: var(--darker-bg);
            color: var(--text-secondary);
            padding: 60px 0 30px;
            font-size: 0.95em;
            border-top: 1px solid var(--border-color);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .footer-about {
            text-align: left;
        }

        .footer-logo {
            height: 60px;
            margin-bottom: 20px;
        }

        .footer-about p {
            margin-bottom: 20px;
        }

        .footer-contact .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 10px;
            color: var(--text-secondary);
        }

        .footer-contact .contact-item i {
            color: var(--primary-blue);
        }

        .footer-social-icons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
            justify-content: flex-start;
        }

        .footer-social-icons a {
            color: var(--text-secondary);
            font-size: 1.5em;
            transition: color 0.3s ease;
        }

        .footer-social-icons a:hover {
            color: var(--text-accent);
        }

        .footer-links h3, .footer-location h3 {
            font-size: 1.1em;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            text-align: left;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
        }

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

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

        .footer-links a:hover {
            color: var(--text-accent);
        }

        .footer-location p {
            margin-bottom: 10px;
            text-align: left;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 25px;
            margin-top: 40px;
            text-align: center;
            font-size: 0.85em;
            color: var(--text-secondary);
        }

        /* Mobile Responsiveness */
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
            }
            
            .hero h1 {
                font-size: 3rem;
            }
            
            .modules-grid {
                grid-template-columns: 1fr;
            }
            
            .hero-cta {
                flex-direction: column;
                align-items: center;
            }
            
            .footer-about, .footer-links, .footer-location {
                text-align: center;
            }
            
            .footer-social-icons {
                justify-content: center;
            }
        }

        /* Scrollbar */
        ::-webkit-scrollbar {
            width: 8px;
        }

        ::-webkit-scrollbar-track {
            background: var(--dark-bg);
        }

        ::-webkit-scrollbar-thumb {
            background: var(--primary-blue);
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-accent);
        }