:root{
  --text:#111;
  --muted:#666;
  --border:#ddd;
  --bg:#fff;
  --card:#fafafa;
  --max:900px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.55;
}

.wrap{max-width:var(--max); margin:56px auto; padding:0 16px}
.top{
  display:flex; gap:18px; align-items:flex-start; justify-content:space-between;
  margin-bottom:28px;
}
.brand h1{margin:0 0 6px; font-size:42px; letter-spacing:0.5px}
.brand .tag{margin:0; color:var(--muted); font-size:16px}
.nav{
  display:flex; gap:10px; flex-wrap:wrap; justify-content:flex-end;
}
.nav a{
  text-decoration:none; color:var(--text);
  border:1px solid var(--border);
  padding:8px 12px; border-radius:999px;
  background:#fff;
}
.nav a:hover{background:var(--card)}
.nav a.active{background:var(--text); color:#fff; border-color:var(--text)}

.grid{
  display:grid; grid-template-columns: 1.2fr 0.8fr;
  gap:16px;
}
@media (max-width: 820px){
  .top{flex-direction:column; align-items:flex-start}
  .nav{justify-content:flex-start}
  .grid{grid-template-columns:1fr}
}

.card{
  border:1px solid var(--border);
  border-radius:16px;
  padding:18px;
  background:var(--card);
}

h2{margin:0 0 10px; font-size:20px}
p{margin:0 0 12px}
p:last-child{margin-bottom:0}

.kv{display:grid; grid-template-columns: 1fr 1fr; gap:10px}
.kv div{
  border:1px solid var(--border);
  background:#fff;
  border-radius:12px;
  padding:12px;
}
.kv .k{color:var(--muted); font-size:13px; margin-bottom:2px}
.kv .v{font-size:14px}

.footer{
  margin-top:22px;
  color:var(--muted);
  font-size:13px;
}

.link{color:inherit}
.small{color:var(--muted); font-size:13px}