* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

main {
    background: white;
    border-radius: 12px;
    padding: 60px 40px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    width: 100%;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: #667eea;
    font-weight: 700;
}

.greeting {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: #555;
}

.app-link {
    font-size: 1.1rem;
}

.app-link a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.app-link a:hover {
    color: #764ba2;
    text-decoration: underline;
}

@media (max-width: 600px) {
    main {
        padding: 40px 30px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .greeting {
        font-size: 1rem;
    }
}