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HTML

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Cosmic Experience</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap"
        rel="stylesheet">
    <link rel="stylesheet" href="css/style.css">
</head>

<body>
    <header class="header">
        <a href="#" class="logo">YOUR LOGO</a>
        <nav class="nav">
            <a href="#">Home</a>
            <a href="#">About</a>
            <a href="#">Services</a>
            <a href="#">Contact</a>
        </nav>
    </header>

<div class="container">
            <div class="content">
                <span class="badge">LIMITED TIME OFFER</span>
                <h1>EXPLORE THE<br>COSMIC<br>UNIVERSE</h1>
                <p class="subtitle">Discover the mysteries of space with our exclusive premium access to stunning cosmic
                    imagery and data.</p>

<div class="features">
                    <div class="feature">
                        <div class="feature-icon">✓</div>
                        <div class="feature-text">4K Ultra HD Quality</div>
                    </div>
                    <div class="feature">
                        <div class="feature-icon">✓</div>
                        <div class="feature-text">Unlimited Downloads</div>
                    </div>
                    <div class="feature">
                        <div class="feature-icon">✓</div>
                        <div class="feature-text">Expert Commentary</div>
                    </div>
                    <div class="feature">
                        <div class="feature-icon">✓</div>
                        <div class="feature-text">Weekly Updates</div>
                    </div>
                </div>

<div class="buttons">
                    <a href="#" class="btn btn-primary">Get Started Now</a>
                    <a href="#" class="btn btn-secondary">Learn More</a>
                </div>
            </div>

<div class="product-card">
                <div class="card-header">
                    <div class="header-dot"></div>
                    <div class="header-dot"></div>
                    <div class="header-dot"></div>
                </div>
                <div class="card-content">
                    <h2 class="card-title">Cosmic Explorer Pro</h2>
                    <p class="card-text">Access the universe like never before with our premium suite of tools and HD
                        imagery</p>
                    <a href="#" class="card-button">Launch Explorer</a>
                </div>
            </div>
        </div>

</main>

</html>

CSS

* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Poppins', sans-serif;
        }
        
        body {
            background-color: #1a1a3a;
            color: #ffffff;
            overflow-x: hidden;
            min-height: 100vh;
        }
        
        .header {
            padding: 18px 5%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background-color: transparent;
            
        }
        
        .logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #ffffff;
            text-decoration: none;
            letter-spacing: 1px;
        }
        
        .nav {
            display: flex;
            gap: 25px;
        }
        
        .nav a {
            color: #ffffff;
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 5px 0;
            transition: all 0.3s ease;
        }
        
        .nav a:hover {
            color: #5ce1e6;
        }
        
        .hero {
            width: 100%;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            background: linear-gradient(180deg, #1a1a3a 0%, #252568 90%);
            padding: 80px 5% 30px;
        }
        
        .stars {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
        }
        
        .star {
            position: absolute;
            background-color: #00d2ff;
            border-radius: 50%;
            animation: twinkle 4s infinite ease-in-out;
        }
        
        @keyframes twinkle {
            0%, 100% { opacity: 0.2; }
            50% { opacity: 1; }
        }
        
        .moon {
            position: absolute;
            top: 20%;
            right: 15%;
            width: 100px;
            height: 100px;
            background-color: #c8b6e2;
            border-radius: 50%;
            box-shadow: 0 0 40px rgba(200, 182, 226, 0.7);
            pointer-events: none;
        }
        
        .landscape {
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 15vh;
            background-color: #000000;
            clip-path: polygon(0% 40%, 15% 60%, 33% 40%, 45% 60%, 60% 30%, 80% 55%, 100% 25%, 100% 100%, 0% 100%);
            opacity: 0.7;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        
        .content {
            max-width: 550px;
        }
        
        .badge {
            display: inline-block;
            background-color: rgba(92, 225, 230, 0.15);
            color: #5ce1e6;
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 25px;
            letter-spacing: 1px;
            text-transform: uppercase;
        }
        
        h1 {
            font-size: 3.8rem;
            line-height: 1.1;
            margin-bottom: 20px;
            color: #ffffff;
            letter-spacing: 1px;
            font-weight: 800;
            text-transform: uppercase;
        }
        
        .subtitle {
            font-size: 1rem;
            font-weight: 300;
            color: #cccccc;
            margin-bottom: 25px;
            line-height: 1.6;
        }
        
        .features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin: 25px 0 35px;
        }
        
        .feature {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .feature-icon {
            width: 22px;
            height: 22px;
            background-color: rgba(92, 225, 230, 0.15);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #5ce1e6;
            font-size: 0.8rem;
        }
        
        .feature-text {
            font-size: 0.9rem;
            font-weight: 400;
            color: #ffffff;
        }
        
        .buttons {
            display: flex;
            gap: 15px;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 25px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            text-decoration: none;
            letter-spacing: 0.5px;
            transition: all 0.3s ease;
        }
        
        .btn-primary {
            background-color: #5ce1e6;
            color: #1a1a3a;
            border: none;
        }
        
        .btn-primary:hover {
            background-color: #40d0d5;
            transform: translateY(-3px);
        }
        
        .btn-secondary {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        
        .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: #ffffff;
            transform: translateY(-3px);
        }
        
        .product-card {
            width: 100%;
            max-width: 400px;
            background-color: rgba(40, 40, 90, 0.5);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
            margin-left: auto;
        }
        
        .card-header {
            height: 35px;
            background-color: rgba(26, 26, 58, 0.8);
            display: flex;
            align-items: center;
            padding: 0 15px;
            gap: 5px;
        }
        
        .header-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: #5ce1e6;
        }
        
        .card-content {
            padding: 30px 25px;
            text-align: center;
        }
        
        .card-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: #ffffff;
        }
        
        .card-text {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.5;
            margin-bottom: 20px;
        }
        
        .card-button {
            display: inline-block;
            padding: 10px 20px;
            background-color: #5ce1e6;
            color: #1a1a3a;
            border-radius: 5px;
            font-size: 0.85rem;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .card-button:hover {
            background-color: #40d0d5;
            transform: translateY(-3px);
        }
        
        .footer {
            position: absolute;
            bottom: 15px;
            width: 100%;
            text-align: center;
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.6);
            z-index: 10;
            font-weight: 300;
        }
        .footer a{
            color: #5ce1e6;
            text-decoration: none;
        }
        
        @media (max-width: 1024px) {
            .container {
                max-width: 90%;
                gap: 30px;
            }
            
            h1 {
                font-size: 3.2rem;
            }
            
            .product-card {
                max-width: 380px;
            }
        }
        
        @media (max-width: 900px) {
            .container {
                grid-template-columns: 1fr;
                padding: 100px 20px 40px;
            }
            
            h1 {
                font-size: 3rem;
            }
            
            .content {
                max-width: 100%;
                order: 1;
            }
            
            .product-card {
                margin: 0 auto 30px;
                order: 0;
            }
            
            .features {
                max-width: 500px;
                margin: 25px auto 35px;
            }
        }
        
        @media (max-width: 768px) {
            .hero {
                padding: 80px 20px 30px;
            }
            
            h1 {
                font-size: 2.7rem;
            }
            
            .moon {
                width: 80px;
                height: 80px;
                top: 15%;
            }
        }
        
        @media (max-width: 600px) {
            .header {
                padding: 15px 20px;
            }
            
            .logo {
                font-size: 1.1rem;
            }
            
            .nav {
                gap: 15px;
            }
            
            .nav a {
                font-size: 0.85rem;
            }
            
            h1 {
                font-size: 2.2rem;
            }
            
            .subtitle {
                font-size: 0.9rem;
            }
            
            .features {
                grid-template-columns: 1fr;
                gap: 15px;
            }
            
            .buttons {
                flex-direction: column;
                max-width: 250px;
                margin: 0 auto;
            }
        }
        
        @media (max-width: 400px) {
            h1 {
                font-size: 1.9rem;
            }
            
            .badge {
                font-size: 0.7rem;
                padding: 6px 12px;
            }
            
            .card-title {
                font-size: 1.3rem;
            }
        }