body { font-family: sans-serif; margin: 0; padding: 0; background: #fff; color: #000; }
header { background: #f5f5f5; padding: 1rem; display: flex; justify-content: space-between; align-items: center; }
nav a { margin: 0 1rem; text-decoration: none; color: #333; }
.hero { padding: 2rem; background: linear-gradient(to right, #dbeafe, #fff); text-align: center; }
.siirler { padding: 2rem; }
.card { background: #f9f9f9; border: 1px solid #ddd; padding: 1rem; margin: 1rem 0; }
footer { text-align: center; padding: 1rem; font-size: 0.9rem; color: #666; border-top: 1px solid #ddd; }