:root{
  --bg:#fafafa;
  --fg:#222;
  --muted:#666;
  --border:#e6e6e6;
  --card:#fff;
  --radius:14px;
}

*{ box-sizing:border-box; }

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

.wrap{
  min-height:100vh;
  display:grid;
  place-items:center;
  padding:32px;
}

.card{
  max-width:1150px;
  width:100%;
  background: var(--card);
  border:1px solid var(--border);
  border-radius: var(--radius);
  padding:32px;
}

.card.narrow{
  max-width:680px;
}

h1{
  margin:0 0 12px 0;
  font-size:30px;
  font-weight:600;
}

p{
  margin:10px 0;
  line-height:1.6;
}

a{
  color: var(--fg);
  text-decoration:none;
  border-bottom:1px solid #ccc;
}

.links a{
  display:inline-block;
  margin-right:16px;
  margin-top:12px;
}

.note{
  margin-top:24px;
  font-size:14px;
  color: var(--muted);
}

.section-links{
  margin-top:18px;
}

.section-links a{
  display:inline-block;
  margin-right:18px;
  margin-top:10px;
  padding-bottom:2px;
  font-weight:500;
  letter-spacing:0.2px;
  border-bottom:2px solid transparent;
  transition: border-color 0.15s ease, opacity 0.15s ease;
}

.section-links a:hover{
  border-bottom-color: var(--fg);
  opacity:0.85;
}