:root {
  --bg: #ffffff;
  --fg: #1c1c1e;
  --muted: #6b7076;
  --rule: #e3e6ea;
  --link: #0b6ab8;
  --card: #f6f8fa;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181b;
    --fg: #e8eaed;
    --muted: #9aa1a9;
    --rule: #2c3034;
    --link: #7cc0f5;
    --card: #1e2125;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.75;
  word-break: keep-all;
  overflow-wrap: break-word;
}
main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
}
h1 {
  font-size: 1.9rem;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}
h2 {
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  margin: 2.75rem 0 0.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
}
h2:first-of-type { border-top: none; padding-top: 0; }
p, li { margin: 0.85rem 0; }
ul { padding-left: 1.35rem; }
a { color: var(--link); }
strong { font-weight: 600; }
.effective {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 2.5rem;
}
.summary {
  background: var(--card);
  border-radius: 12px;
  padding: 1.25rem 1.4rem;
  margin: 0 0 2.5rem;
}
.summary h2 { border: none; padding: 0; margin: 0 0 0.5rem; font-size: 1rem; }
.summary p:last-child { margin-bottom: 0; }
.lang {
  font-size: 0.9rem;
  margin: 0 0 2rem;
  color: var(--muted);
}
footer {
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.85rem;
}

/* FAQ 문답. 질문은 h3, 답은 그 아래 문단. */
h3 {
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 2rem 0 0.35rem;
}
h3 + p, h3 + ol, h3 + ul { margin-top: 0.35rem; }
ol { padding-left: 1.35rem; }

/* 사이트 안에서 서로 오가는 줄 */
.nav {
  font-size: 0.9rem;
  margin: 0 0 2rem;
}
.nav a { margin-right: 0.9rem; }

/* 문의처 카드 */
.contact {
  background: var(--card);
  border-radius: 12px;
  padding: 1.1rem 1.3rem;
  margin: 0 0 2rem;
}
.contact p { margin: 0.3rem 0; }
.contact .addr {
  font-size: 1.05rem;
  font-weight: 600;
}

/* 루트 랜딩의 링크 목록 */
.cards { list-style: none; padding: 0; margin: 2rem 0 0; }
.cards li { margin: 0 0 0.9rem; }
.cards a { font-weight: 600; }
.cards span {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 400;
}