:root{
  --bg:#f9fafb;
  --card:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --border:#e5e7eb;
  --accent:#2563eb;
}

*{box-sizing:border-box}

body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
}

a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

.container{width:min(1100px,92vw);margin:0 auto}

.nav{
  position:sticky;
  top:0;
  background:#ffffff;
  border-bottom:1px solid var(--border);
}
.nav-inner{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:14px 0;
  gap:16px
}
.nav a{
  color:var(--text);
  padding:6px 10px;
  border-radius:8px;
}
.nav a.active{
  font-weight:600;
  text-decoration:underline;
}

.hero{
  padding:36px 0 16px;
}
.hero h1{
  margin:0 0 8px;
  font-size:clamp(26px,3vw,40px);
}
.hero p{
  margin:0;
  color:var(--muted);
}

.grid{
  display:grid;
  gap:16px;
  grid-template-columns:repeat(12,1fr);
  margin:24px 0;
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:12px;
  padding:18px;
}

.card h2{
  margin:0 0 12px;
  font-size:18px;
}

.kv-row{
  display:flex;
  justify-content:space-between;
  gap:16px;
  padding:10px 0;
  border-bottom:1px dashed var(--border);
}
.kv-row:last-child{border-bottom:none}
.kv-row dt{color:var(--muted)}
.kv-row dd{text-align:right;max-width:60%}

.footer{
  border-top:1px solid var(--border);
  padding:24px 0;
  color:var(--muted);
  margin-top:24px;
}

@media(max-width:820px){
  .grid{grid-template-columns:1fr}
  .kv-row dd{max-width:55%}
}