:root{
  --ink:#0f172a; --muted:#475569; --brand:#1e90ff; --bg:#ffffff; --surface:#f8fafc;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);background:#fff}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
header.site{position:sticky;top:0;background:#fff;border-bottom:1px solid #e5e7eb;z-index:50}
.navbar{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:40px;width:auto;border-radius:10px}
nav ul{display:flex;align-items:center;gap:18px;list-style:none;margin:0;padding:0}
nav a{font-weight:600}
.hamburger{display:none;background:none;border:none;font-size:26px}
.hero{position:relative}
.hero img{width:100%;height:54vh;object-fit:cover;display:block;filter:brightness(.88)}
.hero .overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.25),rgba(0,0,0,.5))}
.hero .inner{position:absolute;inset:0;display:flex;align-items:center}
.hero h1{color:#fff;font-size:44px;margin:0 0 8px 0}
.hero p{color:#e2e8f0;font-size:18px;max-width:680px;margin:0}
.btn{display:inline-block;padding:10px 16px;border-radius:10px;border:1px solid #e5e7eb;background:#fff;font-weight:600}
.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.section{padding:42px 0}
.grid{display:grid;gap:20px}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.card{background:#fff;border:1px solid #e5e7eb;border-radius:16px;padding:18px;transition:transform .2s,outline-color .2s,box-shadow .2s}
.card:hover{transform:translateY(-2px);outline:2px solid var(--brand);box-shadow:0 8px 24px rgba(2,6,23,.08)}
.figure{border-radius:16px;overflow:hidden;border:1px solid #e5e7eb}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:12px;border-bottom:1px solid #e5e7eb;text-align:left}
small, .small{color:#64748b}
.footer{background:#0f172a;color:#cbd5e1;padding:28px 0;margin-top:48px}
.footer a{color:#e2e8f0}
@media (max-width: 900px){
  .grid.cols-3{grid-template-columns:1fr}
  .grid.cols-2{grid-template-columns:1fr}
}
@media (max-width: 780px){
  nav ul{display:none;flex-direction:column;align-items:flex-start;background:#fff;position:absolute;top:64px;left:0;right:0;padding:12px 20px;border-bottom:1px solid #e5e7eb}
  nav ul.open{display:flex}
  .hamburger{display:block}
}