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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            color: #1d1d1f;
            overflow-x: hidden;
        }

        /* Navigation */
        .nav {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 12px 20px;
        }

        .nav-logo {
            font-size: 24px;
            font-weight: 600;
            color: #1d1d1f;
            text-decoration: none;
            transition: transform 0.3s ease;
        }

        .nav-logo:hover {
            transform: scale(1.05);
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 40px;
        }

        .nav-links a {
            text-decoration: none;
            color: #1d1d1f;
            font-weight: 400;
            font-size: 17px;
            transition: color 0.3s ease;
            position: relative;
        }

        .nav-links a:hover {
            color: #007aff;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: #007aff;
            transition: width 0.3s ease;
        }

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

        .hamburger {
            display: none;
            flex-direction: column;
            cursor: pointer;
            gap: 4px;
        }

        .hamburger span {
            width: 25px;
            height: 2px;
            background: #1d1d1f;
            transition: all 0.3s ease;
        }

        .dark-mode-toggle {
            background: none;
            border: none;
            font-size: 22px;
            cursor: pointer;
            margin-left: 18px;
            color: #1d1d1f;
            transition: color 0.3s;
        }
        .dark-mode .dark-mode-toggle {
            color: #fff;
        }

        /* Hero Section */
        .hero {
            height: 100vh;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }

        .hero-content {
            text-align: center;
            color: white;
            z-index: 2;
            animation: fadeInUp 1s ease-out;
        }

        .hero h1 {
            font-size: clamp(3rem, 8vw, 8rem);
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: -2px;
        }

        .hero p {
            font-size: clamp(1.2rem, 3vw, 2rem);
            margin-bottom: 40px;
            opacity: 0.9;
        }

        .cta-button {
            display: inline-block;
            padding: 16px 32px;
            background: rgba(255, 255, 255, 0.2);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 500;
            font-size: 18px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .cta-button:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        }

        .hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><radialGradient id="a" cx="50%" cy="50%" r="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="50" cy="50" r="50" fill="url(%23a)"/></svg>') center/cover;
            animation: float 6s ease-in-out infinite;
        }

        /* Product Showcase */
        .showcase {
            padding: 120px 20px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .showcase-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 60px;
            margin-bottom: 120px;
        }

        .product-card {
            background: #f5f5f7;
            border-radius: 20px;
            padding: 60px 40px;
            text-align: center;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.15);
        }

        .product-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8), transparent);
            transition: left 0.6s ease;
        }

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

        .product-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 30px;
            background: linear-gradient(135deg, #007aff, #5856d6);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            color: white;
            transition: transform 0.3s ease;
        }

        .product-card:hover .product-icon {
            transform: scale(1.1) rotate(5deg);
        }

        .product-card h3 {
            font-size: 28px;
            font-weight: 600;
            margin-bottom: 15px;
            color: #1d1d1f;
        }

        .product-card p {
            font-size: 17px;
            color: #86868b;
            margin-bottom: 30px;
            line-height: 1.6;
        }

        .learn-more {
            color: #007aff;
            text-decoration: none;
            font-weight: 500;
            font-size: 17px;
            transition: color 0.3s ease;
        }

        .learn-more:hover {
            color: #0056cc;
        }

        /* Feature Section */
        .features {
            background: #000;
            color: white;
            padding: 120px 20px;
            position: relative;
        }

        .features-container {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
        }

        .features h2 {
            font-size: clamp(2.5rem, 5vw, 4rem);
            font-weight: 700;
            margin-bottom: 60px;
            background: linear-gradient(135deg, #fff, #999);
            background-clip: text;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 40px;
            margin-top: 80px;
        }

        .feature-item {
            padding: 40px 20px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.05);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: all 0.3s ease;
        }

        .feature-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-5px);
        }

        .feature-item h4 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 15px;
            color: #007aff;
        }

        .feature-item p {
            font-size: 16px;
            opacity: 0.8;
            line-height: 1.6;
        }

        .card-style {
            background: #f5f5f7;
            border-radius: 20px;
            padding: 60px 40px;
            text-align: center;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0,0,0,0.07);
        }
        .card-style::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.8), transparent);
            transition: left 0.6s ease;
            pointer-events: none;
        }
        .card-style:hover::before {
            left: 100%;
        }
        .card-style:hover {
            transform: translateY(-10px);
            box-shadow: 0 30px 60px rgba(0,0,0,0.15);
        }
        .dark-mode .card-style {
            background: linear-gradient(135deg, #232526 0%, #414345 100%);
            color: #fff;
            box-shadow: 0 10px 30px rgba(0,0,0,0.25);
        }

        /* Footer */
        .footer {
            background: #f5f5f7;
            padding: 60px 20px;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            text-align: center;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 40px;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }

        .footer-links a {
            color: #86868b;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s ease;
        }

        .footer-links a:hover {
            color: #1d1d1f;
        }

        .footer p {
            color: #86868b;
            font-size: 14px;
        }

        /* Animations */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px) rotate(0deg); }
            50% { transform: translateY(-20px) rotate(180deg); }
        }

        /* Responsive Design */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .showcase-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .product-card {
                padding: 40px 20px;
            }

            .features-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .footer-links {
                flex-direction: column;
                gap: 20px;
            }
        }

        @media (max-width: 480px) {
            .nav-container {
                padding: 10px 15px;
            }

            .hero h1 {
                font-size: 2.5rem;
            }

            .hero p {
                font-size: 1.1rem;
            }

            .cta-button {
                padding: 14px 28px;
                font-size: 16px;
            }

            .showcase {
                padding: 80px 15px;
            }

            .features {
                padding: 80px 15px;
            }
        }

        /* Scroll animations */
        .animate-on-scroll {
            opacity: 0;
            transform: translateY(50px);
            transition: all 0.8s ease;
        }

        .animate-on-scroll.animated {
            opacity: 1;
            transform: translateY(0);
        }

        /* Dark Mode */
        .dark-mode {
            background: #18191a;
            color: #fff;
        }
        .dark-mode .nav {
            background: rgba(24, 25, 26, 0.95);
        }
        .dark-mode .nav-links a {
            color: #fff;
        }
        .dark-mode .nav-links a:hover {
            color: #0a84ff;
        }
        .dark-mode .nav-links a::after {
            background: #0a84ff;
        }
        .dark-mode .hero {
            background: linear-gradient(135deg, #232526 0%, #414345 100%);
        }
        .dark-mode .hero-content {
            color: #fff;
        }
        .dark-mode .cta-button {
            background: rgba(255,255,255,0.08);
            color: #fff;
            border: 1px solid rgba(255,255,255,0.18);
        }
        .dark-mode .cta-button:hover {
            background: rgba(255,255,255,0.18);
        }
        .dark-mode .showcase {
            background: #232526;
        }
        .dark-mode .product-card {
            background: linear-gradient(135deg, #232526 0%, #414345 100%);
            color: #fff;
        }
        .dark-mode .features {
            background: #18191a;
            color: #fff;
        }
        .dark-mode .footer {
            background: #232526;
        }
        .dark-mode .footer-links a {
            color: #b0b3b8;
        }
        .dark-mode .footer p {
            color: #b0b3b8;
        }