:root{--bg:#ffffff;--text:#0f172a;--muted:#475569;--card:#f8fafc;--border:#e2e8f0;--brand:#0ea5e9}
@media (prefers-color-scheme: dark){
  :root{--bg:#0b1220;--text:#e2e8f0;--muted:#94a3b8;--card:#0f172a;--border:#1f2937;--brand:#38bdf8}
}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,sans-serif;background:var(--bg);color:var(--text)}
.container{max-width:1100px;margin:0 auto;padding:0 16px}
header{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.8);backdrop-filter:saturate(140%) blur(8px);border-bottom:1px solid var(--border)}
@media (prefers-color-scheme: dark){header{background:rgba(11,18,32,.6)}}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{font-weight:800;letter-spacing:.2px}
.menu a{margin-left:18px;text-decoration:none;color:inherit;opacity:.85}
.menu a:hover{opacity:1;color:var(--brand)}
.menu .active{color:var(--brand);opacity:1;font-weight:600}
.hero{padding:72px 0}
h1{font-size:40px;line-height:1.1;margin:0}
h2{font-size:28px;margin:0}
.lead{margin-top:10px;color:var(--muted);font-size:18px}
.btn{display:inline-block;padding:12px 18px;border-radius:12px;font-weight:600;text-decoration:none}
.btn-primary{background:var(--brand);color:#fff}
.btn-outline{border:1px solid var(--border);color:inherit}
.grid{display:grid;gap:16px}
.cards{grid-template-columns:repeat(auto-fit,minmax(260px,1fr));margin-top:18px}
.card{border:1px solid var(--border);border-radius:16px;padding:18px;background:var(--card)}
footer{border-top:1px solid var(--border);margin-top:48px;padding:24px 0;color:var(--muted);text-align:center}
img.rounded{border-radius:20px;border:1px solid rgba(0,0,0,.05);max-width:100%;height:auto}
dl{display:grid;grid-template-columns:1fr 2fr;gap:8px 16px;margin:0}
dt{color:var(--muted)}
input,textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:12px;background:transparent;color:inherit}
form .row{display:grid;gap:12px}
@media(min-width:640px){form .row{grid-template-columns:1fr 1fr}}
button{all:unset}
.btn-submit{cursor:pointer}
.small{font-size:14px;color:var(--muted)}