* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, sans-serif; line-height: 1.6; color: #333; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
header { background: #f4f4f4; padding: 1rem 0; }
nav { display: flex; justify-content: space-between; align-items: center; }
.logo { font-weight: bold; font-size: 1.5rem; }
.nav-links { list-style: none; display: flex; gap: 20px; }
.nav-links a { text-decoration: none; color: #333; font-weight: 500; }
.hero { background: #eef; padding: 4rem 0; text-align: center; }
.hero h1 { font-size: 2.5rem; margin-bottom: 1rem; }
.hero button { background: #007bff; color: white; border: none; padding: 10px 20px; font-size: 1rem; cursor: pointer; border-radius: 4px; transition: background 0.3s; }
.table-section { margin: 4rem auto; }
.table-section h2 { text-align: center; margin-bottom: 2rem; font-size: 2rem; }
table { width: 100%; border-collapse: collapse; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
th, td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #ddd; }
th { background-color: #f8f9fa; font-weight: 600; color: #444; }
tr:hover { background-color: #f1f1f1; }
.hero button:hover { background: #0056b3; }
.grid-section { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; padding: 4rem 20px; }
.card { background: white; border: 1px solid #ddd; border-radius: 8px; overflow: hidden; box-shadow: 0 2px 5px rgba(0,0,0,0.1); }
.card img { width: 100%; height: auto; display: block; }
.card h3, .card p { padding: 0 1rem 1rem; }
.card h3 { margin-top: 1rem; }
footer { background: #333; color: white; text-align: center; padding: 2rem 0; margin-top: auto; }
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero h1 { font-size: 2rem; }
}