/* 숨 웹 공용 스타일.
   앱과 같은 토큰을 씁니다 — 스토어·웹·앱을 오갈 때 같은 물건으로 보여야 합니다.
   SoomColor.background #0C0A15 · accent #FFD166 · warning #FF8B6B */
:root {
  color-scheme: dark;
  --bg: #0C0A15;
  --ink: rgba(255,255,255,.76);
  --ink-strong: #fff;
  --ink-dim: rgba(255,255,255,.5);
  --accent: #FFD166;
  --line: rgba(255,255,255,.08);
  --surface: rgba(255,255,255,.05);
}
* { box-sizing: border-box; }
body {
  margin: 0; padding: 0;
  font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Noto Sans KR", sans-serif;
  background: var(--bg); color: var(--ink);
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 0 22px; }
.wrap.narrow { max-width: 720px; }

/* 언어 전환 */
nav.lang { display: flex; gap: 9px; padding: 26px 0 0; }
nav.lang a {
  text-decoration: none; padding: 6px 14px; border-radius: 999px;
  border: 1px solid rgba(255,255,255,.2); color: rgba(255,255,255,.7); font-size: 14px;
}
nav.lang a.on { background: var(--accent); color: var(--bg); border-color: var(--accent); font-weight: 600; }
section[hidden] { display: none; }

/* 문서 페이지 */
.mark { font-size: 15px; letter-spacing: .28em; color: var(--accent); margin: 34px 0 14px; }
h1 { font-size: 30px; color: var(--ink-strong); margin: 0 0 6px; letter-spacing: -.02em; }
h2 { font-size: 20px; color: var(--ink-strong); margin: 40px 0 10px; letter-spacing: -.01em; }
h3 { font-size: 16px; color: var(--ink-strong); margin: 22px 0 6px; }
.sub { color: var(--ink-dim); font-size: 14px; margin: 0 0 28px; }
a { color: var(--accent); }
code {
  background: rgba(255,255,255,.08); padding: 2px 6px; border-radius: 5px;
  font-size: 13px; font-family: ui-monospace, "SF Mono", Menlo, monospace;
}
table { border-collapse: collapse; width: 100%; margin: 14px 0; font-size: 14px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid rgba(255,255,255,.12); }
th { color: rgba(255,255,255,.55); font-weight: 500; }
.lede {
  background: rgba(255,209,102,.09); border: 1px solid rgba(255,209,102,.3);
  border-radius: 14px; padding: 18px 20px; margin: 0 0 32px;
}
.lede strong, .lede b { color: var(--accent); }
.note {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px; padding: 16px 18px; font-size: 15px; margin: 18px 0;
}

/* 접기 — FAQ */
details {
  border-bottom: 1px solid var(--line); padding: 4px 0;
}
details summary {
  cursor: pointer; list-style: none; padding: 15px 2px;
  color: var(--ink-strong); font-size: 16px; font-weight: 600;
  display: flex; justify-content: space-between; gap: 14px; align-items: center;
  min-height: 44px;   /* 터치 타깃 */
}
details summary::-webkit-details-marker { display: none; }
details summary::after {
  content: "+"; color: var(--accent); font-size: 20px; font-weight: 400;
  flex: 0 0 auto; transition: transform .18s cubic-bezier(.22,.9,.3,1);
}
/* 45도 돌리면 +가 ×가 되어 "닫기"보다 "삭제"로 읽힙니다.
   135도로 돌려 −(빼기)로 만듭니다. */
details[open] summary::after { transform: rotate(135deg); }
details .body { padding: 0 2px 16px; color: rgba(255,255,255,.66); font-size: 15px; }
details .body p:first-child { margin-top: 0; }
details .body p:last-child { margin-bottom: 0; }

footer {
  padding: 40px 0 70px; margin-top: 46px; border-top: 1px solid var(--line);
  font-size: 14px; color: var(--ink-dim);
}
footer a { margin-right: 16px; display: inline-block; min-height: 30px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}