:root {
  --primary: #2563eb;
  --bg: #f8fafc;
  --text: #0f172a;
  --card-bg: #ffffff;
  --border: #e2e8f0;
}
* { margin: 0; padding: 0; box-sizing: border-box; font-family: system-ui, -apple-system, sans-serif; }
body { background: var(--bg); color: var(--text); }
.header { background: var(--card-bg); border-bottom: 1px solid var(--border); padding: 1rem 2rem; display: flex; justify-content: space-between; align-items: center; position: sticky; top: 0; z-index: 100; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: bold; font-size: 1.25rem; text-decoration: none; color: var(--text); }
.brand img { width: 32px; height: 32px; border-radius: 8px; }
.nav-desktop { display: flex; gap: 1.5rem; }
.nav-desktop a { text-decoration: none; color: #475569; font-weight: 500; transition: color 0.2s; }
.nav-desktop a:hover { color: var(--primary); }
.hamburger { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; }
.hero { text-align: center; padding: 4rem 2rem; background: linear-gradient(to bottom, #fff, var(--bg)); }
.hero h1 { font-size: 2.5rem; margin-bottom: 1rem; }
.hero p { color: #64748b; max-width: 600px; margin: 0 auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; padding: 2rem; max-width: 1200px; margin: 0 auto; }
.card { background: var(--card-bg); border: 1px solid var(--border); border-radius: 12px; padding: 1.5rem; text-align: center; transition: transform 0.2s, box-shadow 0.2s; text-decoration: none; color: inherit; display: block; }
.card:hover { transform: translateY(-5px); box-shadow: 0 10px 25px -5px rgba(0,0,0,0.1); }
.card img { width: 80px; height: 80px; margin-bottom: 1rem; border-radius: 16px; object-fit: contain; }
.card h3 { margin-bottom: 0.5rem; }
.card p { color: #64748b; font-size: 0.9rem; }
.footer { text-align: center; padding: 2rem; color: #64748b; border-top: 1px solid var(--border); margin-top: 4rem; }
.page-container { max-width: 800px; margin: 3rem auto; padding: 2rem; background: var(--card-bg); border-radius: 12px; border: 1px solid var(--border); }
@media (max-width: 768px) {
  .nav-desktop { display: none; }
  .hamburger { display: block; }
  .header { padding: 1rem; }
}