:root{
  --brand:#0d5c63;
  --accent:#ffc107;
  --ink:#222;
  --bg:#F5F1E8;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg)}
.container{max-width:1100px;margin:0 auto;padding:24px}
.header{display:flex;align-items:center;justify-content:space-between;margin:8px 0 24px 0}
.brand{display:flex;align-items:center;gap:12px}
.brand-logo{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,var(--brand),#138f96)}
.brand-name{font-weight:700}
.badge{background:var(--brand);color:white;padding:6px 10px;border-radius:999px;font-size:12px}
.nav{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:saturate(140%) blur(6px);border-bottom:1px solid #eaecef}
.nav a{display:inline-block;padding:12px 10px;color:#444;text-decoration:none}
.nav a.active,.nav a:hover{color:var(--brand)}
.card{background:white;border:1px solid #e7e9ee;border-radius:16px;padding:20px;margin:16px 0;box-shadow:0 2px 10px rgba(0,0,0,.03)}
.card h2{margin:0 0 10px 0;font-size:22px}
.footer{padding:24px 0;color:#666;font-size:14px}
.cta{display:inline-flex;align-items:center;gap:8px;background:var(--accent);color:#111;border:none;border-radius:12px;padding:10px 14px;font-weight:600;cursor:pointer}
.small{font-size:12px;color:#666}
code.kbd{background:#f0f3f7;border:1px solid #e6e9f0;border-radius:6px;padding:2px 6px}
@media print{
  .nav,.header .cta{display:none}
  .card{break-inside:avoid}
}