:root {
            --primary: #2c3e50;
            --secondary: #3498db;
            --accent: #e74c3c;
            --light: #ecf0f1;
            --dark: #2c3e50;
            --success: #2ecc71;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            line-height: 1.6;
            color: var(--dark);
            background-color: #f9f9f9;
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        /* Header Styles */
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
        }

        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.5rem;
            color: var(--primary);
        }

        .logo i {
            color: var(--secondary);
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 30px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--dark);
            font-weight: 500;
            transition: var(--transition);
        }

        .nav-links a:hover {
            color: var(--secondary);
        }

        .mobile-menu {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* Hero Section */
        .hero {
            padding: 150px 0 100px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            text-align: center;
        }

        .hero h1 {
            font-size: 3rem;
            margin-bottom: 20px;
        }

        .hero p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }

        .btn {
            display: inline-block;
            padding: 12px 30px;
            background-color: var(--accent);
            color: white;
            border: none;
            border-radius: 5px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn:hover {
            background-color: #c0392b;
            transform: translateY(-3px);
        }

        .btn-secondary {
            background-color: transparent;
            border: 2px solid white;
            margin-left: 10px;
        }

        .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .btn-download {
            background-color: var(--success);
            font-size: 1.1rem;
            padding: 15px 40px;
            margin-top: 20px;
        }

        .btn-download:hover {
            background-color: #27ae60;
        }

        /* Features Section */
        .section {
            padding: 100px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-title h2 {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }

        .section-title p {
            color: #666;
            max-width: 700px;
            margin: 0 auto;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .feature-card {
            background-color: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            text-align: center;
        }

        .feature-card:hover {
            transform: translateY(-10px);
        }

        .feature-icon {
            font-size: 2.5rem;
            color: var(--secondary);
            margin-bottom: 20px;
        }

        .feature-card h3 {
            margin-bottom: 15px;
            color: var(--primary);
        }

        /* How It Works */
        .how-it-works {
            background-color: var(--light);
        }

        .steps {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
        }

        .step {
            flex: 1;
            min-width: 250px;
            text-align: center;
            padding: 30px 20px;
            background-color: white;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }

        .step-number {
            display: inline-block;
            width: 50px;
            height: 50px;
            background-color: var(--secondary);
            color: white;
            border-radius: 50%;
            line-height: 50px;
            font-weight: bold;
            font-size: 1.2rem;
            margin-bottom: 20px;
        }

        /* App Screenshots Section */
        .screenshots {
            background-color: var(--light);
        }

        .screenshot-container {
            display: flex;
            justify-content: center;
            gap: 30px;
            flex-wrap: wrap;
            margin-top: 40px;
        }

        .screenshot {
            width: 250px;
            border-radius: 15px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
        }

        .screenshot:hover {
            transform: translateY(-10px);
        }

        .screenshot-placeholder {
            width: 250px;
            height: 500px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            border-radius: 15px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: white;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
            transition: var(--transition);
        }

        .screenshot-placeholder:hover {
            transform: translateY(-10px);
        }

        .screenshot-placeholder i {
            font-size: 3rem;
            margin-bottom: 20px;
        }

        /* Download Section */
        .download-section {
            text-align: center;
            padding: 80px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
        }

        .download-section h2 {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .download-section p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 40px;
            opacity: 0.9;
        }

        /* Testimonials */
        .testimonials {
            background-color: var(--light);
        }

        .testimonial-slider {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
        }

        .testimonial {
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            text-align: center;
        }

        .testimonial-text {
            font-style: italic;
            margin-bottom: 20px;
        }

        .testimonial-author {
            font-weight: bold;
            color: var(--primary);
        }

        /* Contact Section */
        .contact-form {
            max-width: 600px;
            margin: 0 auto;
            background-color: white;
            padding: 40px;
            border-radius: 10px;
            box-shadow: var(--shadow);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 5px;
            font-size: 1rem;
        }

        /* Footer */
        footer {
            background-color: var(--primary);
            color: white;
            padding: 60px 0 30px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-column h3 {
            margin-bottom: 20px;
            font-size: 1.2rem;
        }

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

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

        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: white;
        }

        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }

        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: white;
            transition: var(--transition);
        }

        .social-links a:hover {
            background-color: var(--secondary);
            transform: translateY(-3px);
        }

        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #ddd;
            font-size: 0.9rem;
        }

        /* Responsive Styles */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow);
            }

            .nav-links.active {
                display: flex;
            }

            .mobile-menu {
                display: block;
            }

            .hero h1 {
                font-size: 2.2rem;
            }

            .hero p {
                font-size: 1rem;
            }

            .section {
                padding: 70px 0;
            }

            .section-title h2 {
                font-size: 2rem;
            }
        }