:root{
  --bg:#ffffff;
  --fg:#111827;
  --muted:#6b7280;
  --card:#ffffff;
  --border:#e5e7eb;
  --link:#2563eb;

  --max: 920px;
  --pad: clamp(16px, 3.5vw, 28px);
  --h1: clamp(24px, 4.6vw, 36px);
  --h2: clamp(16px, 3.2vw, 20px);
  --p:  clamp(15px, 3.0vw, 17px);
}

@media (prefers-color-scheme: dark){
  :root{
    --bg:#0b1220;
    --fg:#e5e7eb;
    --muted:#9ca3af;
    --card:#0f172a;
    --border:#243244;
    --link:#60a5fa;
  }
}

*{ box-sizing:border-box; }

html, body{
  margin:0;
  padding:0;
}

body{
  background:var(--bg);
  color:var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans KR", Arial, sans-serif;
  line-height:1.7;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
}

main{
  max-width: var(--max);
  margin: 0 auto;
  padding: var(--pad);
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius: 14px;
  padding: clamp(16px, 3vw, 26px);
  box-shadow: 0 6px 24px rgba(0,0,0,.06);
}

h1{
  font-size: var(--h1);
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}

.meta{
  color:var(--muted);
  font-size: 13px;
  margin-bottom: 18px;
}

h2{
  font-size: var(--h2);
  margin: 22px 0 8px;
  letter-spacing: -0.01em;
}

p, li{
  font-size: var(--p);
  margin: 0 0 12px;
  overflow-wrap: anywhere;
  word-break: keep-all;
}

ul{
  padding-left: 20px;
  margin: 8px 0 12px;
}

a{ color: var(--link); }

@media print{
  body{ background:#fff; color:#000; }
  .card{ border:none; box-shadow:none; padding:0; }
  a{ color:#000; text-decoration: underline; }
}