body { margin: 0; font-family: 'Roboto', sans-serif; background: linear-gradient(135deg, #1e3c72, #2a5298); color: #fff; line-height: 1.6; overflow-x: hidden; } header { position: fixed; top: 0; left: 0; width: 100%; background: rgba(0, 0, 0, 0.8); z-index: 1000; } nav { display: flex; justify-content: space-between; align-items: center; padding: 10px 20px; } .logo { font-size: 24px; font-weight: bold; text-transform: uppercase; letter-spacing: 2px; } nav ul { list-style: none; display: flex; gap: 20px; } nav a { color: #fff; text-decoration: none; transition: color 0.3s ease; } nav a:hover { color: #4caf50; } main { padding-top: 80px; } .hero { height: 100vh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; position: relative; overflow: hidden; } .hero h1 { font-size: 48px; margin-bottom: 20px; } .hero p { font-size: 20px; max-width: 600px; } .future-gate { position: relative; width: 80%; max-width: 800px; height: 400px; background: #fff; box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3); border-radius: 10px; overflow: hidden; } .clouds { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; } .cloud { position: absolute; width: 100px; height: 100px; background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center/cover; animation: float 10s infinite ease-in-out; } @keyframes float { 0% { transform: translateY(0) translateX(0); } 50% { transform: translateY(-20px) translateX(50px); } 100% { transform: translateY(0) translateX(0); } } .content { padding: 40px; } .grid-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; } .card { background: rgba(255, 255, 255, 0.1); padding: 20px; border-radius: 10px; transition: transform 0.3s ease; } .card:hover { transform: scale(1.05); } footer { background: #111; color: #ccc; padding: 20px; text-align: center; } .back-to-top { position: fixed; bottom: 20px; right: 20px; background: #fff; color: #333; border: none; cursor: pointer; padding: 10px; border-radius: 50%; box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3); transition: background 0.3s ease; } .back-to-top:hover { background: #f0f0f0; } @media (max-width: 768px) { .hero h1 { font-size: 36px; } nav ul { flex-direction: column; gap: 10px; } } @media (max-width: 480px) { .hero h1 { font-size: 28px; } .hero p { font-size: 16px; } }