body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #333;
            margin: 0;
            padding: 20px;
        }
        .container {
            max-width: 900px;
            margin: 0 auto;
            background: white;
            border-radius: 15px;
            padding: 2rem;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        h1 {
            background: linear-gradient(45deg, #667eea, #764ba2);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 1rem;
        }
        p {
            line-height: 1.6;
        }
        a.back {
            display: inline-block;
            margin-top: 20px;
            padding: 10px 20px;
            background: linear-gradient(45deg, #667eea, #764ba2);
            color: white;
            text-decoration: none;
            border-radius: 25px;
            transition: background 0.3s;
        }
        a.back:hover {
            background: linear-gradient(45deg, #764ba2, #667eea);
        }