body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: #333;
    background-color: #f8f8f8;
    margin: 0;
}
.shadow-lg {
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}
.rounded-lg {
    border-radius: 12px;
}
.gradient-bg {
    background: linear-gradient(120deg, #f9f9f9, #ffffff);
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
header button:hover, section button:hover {
    transform: scale(1.05);
    transition: all 0.3s ease;
}