body {
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #a1c4fd 0%, #c2e9fb 100%);
            color: #2c3e50;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            overflow: hidden;
        }
        .glass-panel {
            background: rgba(255, 255, 255, 0.4);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.6);
            border-radius: 20px;
            padding: 40px;
            max-width: 600px;
            text-align: center;
            box-shadow: 0 8px 32px rgba(31, 38, 135, 0.15);
            z-index: 10;
        }

        h1 {
            color: #1a5276;
            margin-top: 0;
            font-size: 2.2rem;
        }

        .subtitle {
            font-size: 1.1rem;
            color: #2980b9;
            margin-bottom: 30px;
        }
        .features {
            display: flex;
            gap: 20px;
            margin-bottom: 30px;
        }

        .feature-card {
            background: rgba(255, 255, 255, 0.7);
            padding: 20px;
            border-radius: 12px;
            flex: 1;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
        }

        .feature-card h3 {
            margin-top: 0;
            color: #154360;
        }
        .btn {
            display: inline-block;
            background-color: #2980b9;
            color: white;
            padding: 12px 30px;
            text-decoration: none;
            border-radius: 25px;
            font-weight: bold;
            font-size: 1.1rem;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(41, 128, 185, 0.4);
        }

        .btn:hover {
            background-color: #1a5276;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 82, 118, 0.6);
        }
        .snowflake {
            position: fixed;
            top: -10vh;
            color: #fff;
            user-select: none;
            z-index: 1; 
            pointer-events: none;
            animation: fall linear forwards;
        }

        @keyframes fall {
            0% { transform: translateY(0) rotate(0deg); }
            100% { transform: translateY(110vh) rotate(360deg); }
        }