/* 품질 감사 허브 — 허브 루트 페이지(index, about, lab, workflow, privacy, terms) 공통 스타일 */
:root {
  --bg: #f7f6f2; --surface: #ffffff; --fg: #1c1c1a; --mute: #55554f; --line: #dcdad2;
  --accent: #14503c; --accent-soft: #e4efe9; --on-accent: #ffffff;
  --good: #1d6b3a; --bad: #9b2c22; --warn-bg: #fff6e0;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101412; --surface: #171c19; --fg: #ecebe5; --mute: #a9a99f; --line: #2e3631;
    --accent: #7fe3b3; --accent-soft: #15291f; --on-accent: #0b1a12;
    --good: #7fe3b3; --bad: #f19a90; --warn-bg: #2a2412;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.75 system-ui, -apple-system, "Malgun Gothic", "Apple SD Gothic Neo", sans-serif; }
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 3px; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 760px; }

.skip-link { position: absolute; left: -9999px; top: 0; z-index: 10; background: var(--accent); color: var(--on-accent); padding: 10px 16px; font-weight: 600; }
.skip-link:focus { left: 0; }

/* 머리말 + 메뉴 */
.hub-top { border-bottom: 1px solid var(--line); background: var(--surface); }
.hub-top-inner { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 20px; padding-top: 12px; padding-bottom: 12px; }
.hub-brand { font-weight: 800; color: var(--fg); text-decoration: none; letter-spacing: -.01em; }
.hubnav { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: .95rem; }
.hubnav a { color: var(--mute); text-decoration: none; padding: 4px 0; }
.hubnav a:hover { color: var(--fg); text-decoration: underline; }
.hubnav a[aria-current="page"] { color: var(--fg); font-weight: 700; box-shadow: inset 0 -2px 0 var(--accent); }

/* 본문 */
main { padding: 32px 0 48px; }
h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); line-height: 1.3; margin: 0 0 10px; letter-spacing: -.01em; }
h2 { font-size: 1.3rem; line-height: 1.4; margin: 40px 0 10px; padding-top: 18px; border-top: 1px solid var(--line); }
h3 { font-size: 1.05rem; margin: 24px 0 6px; }
.lead { color: var(--mute); font-size: 1.05rem; margin: 0 0 8px; }
.meta { color: var(--mute); font-size: .9rem; margin-top: 0; }
li { margin: 4px 0; }
code { font-family: ui-monospace, Consolas, monospace; font-size: .9em; background: rgba(127, 127, 127, .14); padding: 1px 5px; border-radius: 4px; overflow-wrap: anywhere; }
pre { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; overflow-x: auto; font-size: .88rem; line-height: 1.6; }
pre code { background: none; padding: 0; }

/* 카드 */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; margin: 24px 0; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 22px; display: flex; flex-direction: column; gap: 10px; }
.card h2 { margin: 0; padding: 0; border: 0; font-size: 1.2rem; }
.card p, .card ul { margin: 0; color: var(--mute); }
.card ul { padding-left: 1.2em; }
.btns { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; padding-top: 8px; }
.btn { display: inline-block; padding: 9px 15px; border-radius: 8px; border: 1px solid var(--accent); color: var(--accent); text-decoration: none; font-weight: 600; }
.btn.primary { background: var(--accent); color: var(--on-accent); }

/* 수치 요약 */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 18px 0; }
.stat { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.stat b { display: block; font-size: 1.6rem; line-height: 1.2; font-variant-numeric: tabular-nums; }
.stat span { color: var(--mute); font-size: .88rem; }

/* 표 */
.table-scroll { overflow-x: auto; margin: 14px 0; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: .92rem; }
caption { text-align: left; padding: 10px 12px 0; color: var(--mute); font-size: .88rem; }
th, td { padding: 8px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
thead th { font-weight: 700; white-space: nowrap; }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.ok { color: var(--good); font-weight: 700; }
.ng { color: var(--bad); font-weight: 700; }

.note { background: var(--warn-bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 16px 0; }
.note p { margin: 4px 0; }
ol.steps { padding-left: 1.4em; }
ol.steps > li { margin: 14px 0; }
ol.steps > li > strong { display: block; }

/* 꼬리말 */
.hub-foot { border-top: 1px solid var(--line); padding: 22px 0 40px; color: var(--mute); font-size: .9rem; }
.foot-links { display: flex; flex-wrap: wrap; gap: 4px 10px; }
.foot-links a { color: var(--mute); }
.hub-foot p { margin: 10px 0 0; }