:root {
  --color-primary: #0E7490;
  --color-dark: #111827;
  --color-light: #F3F4F6;
  --color-accent: #F59E0B;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Helvetica Neue', Arial, 'Noto Sans', 'Liberation Sans', sans-serif; color: var(--color-dark); background: white; }
a { color: var(--color-primary); text-decoration: none; }
.container { max-width: 1120px; margin: 0 auto; padding: 0 1rem; }
header { position: sticky; top: 0; background: white; border-bottom: 1px solid #e5e7eb; z-index: 50; }
.nav { display: flex; justify-content: space-between; align-items: center; padding: 0.75rem 0; }
.nav a.brand { display: flex; align-items: center; gap: 0.5rem; font-weight: 700; color: var(--color-dark); }
.nav img.brand-logo { height: 32px; width: 32px; }
.nav ul { display: flex; gap: 1rem; list-style: none; margin: 0; padding: 0; }
.nav-toggle { display: none; }
.hero { background: url('../img/hero.jpg') center/cover no-repeat; color: white; }
.hero-overlay { background: linear-gradient(90deg, rgba(17,24,39,0.65), rgba(17,24,39,0.25)); }
.hero .container { padding: 6rem 1rem; }
.hero h1 { font-size: clamp(2rem, 6vw, 3.25rem); margin: 0 0 0.5rem; }
.hero p { max-width: 52ch; font-size: 1.1rem; }
.btn { display: inline-block; padding: 0.65rem 1rem; border-radius: 8px; border: 1px solid transparent; }
.btn.primary { background: var(--color-primary); color: white; }
.btn.secondary { background: white; color: var(--color-dark); border-color: #e5e7eb; }
.section { padding: 3rem 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
.card { border: 1px solid #e5e7eb; border-radius: 12px; padding: 1rem; background: white; }
footer { background: var(--color-dark); color: white; }
footer a { color: #93c5fd; }
footer .container { padding: 2rem 1rem; display: grid; grid-template-columns: 1fr; gap: 1rem; }
@media (max-width: 768px) {
  .nav ul { display: none; }
  .nav-toggle { display: inline-flex; }
  .nav.open ul { display: flex; flex-direction: column; padding: 0.75rem 0; }
}