/* 현장 운영 가이드 페이지 공통 스타일 (auto-parts-mes·uph-management·downtime-tracking·smart-factory-support)
   색 토큰은 privacy.html·site.css 와 같은 값이다 — 바꾸면 세 곳을 같이 바꾼다. */
:root { --bg: #FFFFFF; --sunken: #F4F5F7; --line: #E3E6EB; --ink: #14181F; --ink-2: #3A4250; --ink-3: #5B6573; --accent: #9A4310; --brand: #D97742; color-scheme: light; }
:root[data-theme="dark"] { --bg: #07090E; --sunken: #0D121B; --line: #2E3846; --ink: #EEF0F3; --ink-2: #C3CAD4; --ink-3: #96A1B0; --accent: #E89A6B; color-scheme: dark; }

* { box-sizing: border-box; }
body { font-family: 'Malgun Gothic', 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif; background: var(--bg); color: var(--ink-2); margin: 0; padding: 0 16px 48px; line-height: 1.8; font-size: 16px; word-break: keep-all; overflow-wrap: anywhere; }
a { color: var(--accent); }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.skip-link { position: absolute; left: -9999px; }
.skip-link:focus { left: 16px; top: 8px; background: var(--bg); padding: 6px 10px; z-index: 10; }

.top { display: flex; align-items: center; gap: 14px; max-width: 800px; margin: 0 auto; padding: 18px 0; border-bottom: 1px solid var(--line); }
.brand { display: inline-flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; font-weight: 900; font-size: 20px; letter-spacing: -0.02em; }
.brand svg { width: 26px; height: 26px; }
.brand b { color: var(--brand); }
.top nav { margin-left: auto; display: flex; gap: 14px; align-items: center; font-size: 14px; }
.top nav a { color: var(--ink-3); text-decoration: none; }
.top nav a.cta { color: var(--bg); background: var(--ink); padding: 6px 12px; border-radius: 999px; font-weight: 700; }

.wrap { max-width: 800px; margin: 0 auto; }
.crumbs { font-size: 13px; color: var(--ink-3); margin: 20px 0 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.crumbs li + li::before { content: "›"; margin-right: 6px; }
.crumbs a { color: var(--ink-3); }
h1 { color: var(--ink); font-size: 28px; line-height: 1.4; margin: 12px 0 8px; letter-spacing: -0.02em; }
.lead { font-size: 17px; color: var(--ink-2); margin: 0 0 8px; }
.meta { color: var(--ink-3); font-size: 13px; margin: 0 0 24px; }
.toc { background: var(--sunken); border: 1px solid var(--line); border-radius: 10px; padding: 14px 18px; margin: 0 0 8px; font-size: 15px; }
.toc b { color: var(--ink); }
.toc ol { margin: 6px 0 0; padding-left: 20px; }
h2 { color: var(--ink); font-size: 21px; line-height: 1.45; margin: 44px 0 10px; padding-top: 8px; border-top: 1px solid var(--line); scroll-margin-top: 16px; }
h3 { color: var(--ink); font-size: 17px; margin: 24px 0 6px; }
ul, ol { padding-left: 22px; }
li { margin: 4px 0; }
strong { color: var(--ink); }

.formula { background: var(--sunken); border-left: 4px solid var(--brand); border-radius: 6px; padding: 12px 16px; margin: 14px 0; font-weight: 700; color: var(--ink); }
.formula small { display: block; font-weight: 400; color: var(--ink-3); margin-top: 4px; }
.note { border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; margin: 16px 0; font-size: 15px; }
.note b { color: var(--ink); }

.tbl { overflow-x: auto; margin: 12px 0; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { border: 1px solid var(--line); padding: 9px 10px; text-align: left; vertical-align: top; }
th { background: var(--sunken); color: var(--ink); }
td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }

.faq details { border: 1px solid var(--line); border-radius: 10px; padding: 0 16px; margin: 10px 0; }
.faq summary { cursor: pointer; font-weight: 700; color: var(--ink); padding: 12px 0; }
.faq details p { margin: 0 0 14px; }

.cta-box { margin: 48px 0 0; padding: 22px; border-radius: 14px; background: var(--sunken); border: 1px solid var(--line); }
.cta-box h2 { border: 0; margin: 0 0 6px; padding: 0; font-size: 19px; }
.cta-box p { margin: 0 0 14px; }
.cta-box .btns { display: flex; flex-wrap: wrap; gap: 10px; }
.btn { display: inline-block; padding: 10px 18px; border-radius: 999px; font-weight: 700; text-decoration: none; font-size: 15px; }
.btn-primary { background: var(--brand); color: #14181F; }
.btn-line { border: 1px solid var(--ink-3); color: var(--ink); }

.related { margin: 40px 0 0; }
.related h2 { font-size: 17px; }
.related ul { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; }
.related a { display: block; border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; text-decoration: none; color: var(--ink); font-weight: 700; }
.related a span { display: block; font-weight: 400; font-size: 13px; color: var(--ink-3); }

.foot { max-width: 800px; margin: 48px auto 0; padding-top: 18px; border-top: 1px solid var(--line); font-size: 13px; color: var(--ink-3); }
.foot a { color: var(--ink-3); }

@media (max-width: 520px) {
    h1 { font-size: 23px; }
    h2 { font-size: 19px; }
    .top nav a:not(.cta) { display: none; }
}
caption.cap-left { text-align: left; caption-side: top; padding-bottom: 6px; }

/* UPH 계산기 */
.calc { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; margin: 14px 0; }
.calc fieldset { border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px 16px; margin: 0; }
.calc legend { font-weight: 700; color: var(--ink); padding: 0 4px; }
.calc label { display: flex; justify-content: space-between; align-items: center; gap: 10px; font-size: 14px; margin: 8px 0; }
.calc input { width: 120px; padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--ink); font: inherit; text-align: right; }
.calc input:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.calc output { display: block; margin-top: 10px; padding: 10px 12px; border-radius: 8px; background: var(--sunken); color: var(--ink); font-weight: 700; font-variant-numeric: tabular-nums; }
@media (max-width: 520px) {
    .tbl table.wide { min-width: 560px; }
}

/* 설비 에러코드 사전 (error-codes/, tools/error_codes/build.py 생성) */
.ec-index { list-style: none; padding: 0; margin: 8px 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 4px 14px; }
.ec-index a { display: block; padding: 4px 0; text-decoration: none; color: var(--ink-2); font-size: 14px; line-height: 1.5; }
.ec-index a b { color: var(--accent); font-variant-numeric: tabular-nums; margin-right: 4px; }
.ec { border-top: 1px solid var(--line); margin-top: 28px; scroll-margin-top: 12px; }
.ec h2 { border: 0; margin: 18px 0 6px; padding: 0; font-size: 19px; }
.ec-code { display: inline-block; font-family: Consolas, 'D2Coding', monospace; background: var(--sunken); border: 1px solid var(--line); border-radius: 6px; padding: 1px 8px; margin-right: 6px; color: var(--accent); }
.ec h3 { font-size: 15px; margin: 14px 0 4px; }
.ec-warn { border-left: 4px solid #C2410C; background: var(--sunken); padding: 8px 12px; border-radius: 6px; font-size: 15px; }
.ec-warn b { color: #C2410C; margin-right: 4px; }
:root[data-theme="dark"] .ec-warn { border-left-color: #F0A16B; }
:root[data-theme="dark"] .ec-warn b { color: #F0A16B; }
.ec-ref { color: var(--ink-3); font-size: 13px; margin: 8px 0 0; }
.ec-top { font-size: 13px; margin: 4px 0 0; }
.ec-safety { border-color: #C2410C; }
.ec-legal { margin-top: 32px; }