:root{--bg:#f7f7f4;--card:#fff;--ink:#1d2321;--muted:#5d6763;--line:#e3e5e0;--accent:#0f766e;--accent-soft:#e6f4f1;--warn:#9a3412;--radius:14px;font-size:16px}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Pretendard","Malgun Gothic","Noto Sans KR",sans-serif;line-height:1.7;word-break:keep-all}
a{color:var(--accent)}
.wrap{max-width:780px;margin:0 auto;padding:0 18px}
header.site{background:#fff;border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:58px;flex-wrap:wrap}
.logo{font-weight:800;font-size:1.15rem;text-decoration:none;color:var(--ink)}
.logo span{color:var(--accent)}
nav.cats a{margin-left:14px;text-decoration:none;color:var(--muted);font-size:.93rem}
nav.cats a:hover{color:var(--accent)}
.crumb{font-size:.85rem;color:var(--muted);margin:18px 0 4px}
.crumb a{color:var(--muted);text-decoration:none}
h1{font-size:1.65rem;line-height:1.35;margin:6px 0 8px}
h2{font-size:1.25rem;margin:38px 0 10px;padding-top:6px}
h3{font-size:1.05rem;margin:22px 0 6px}
.lead{color:var(--muted);margin:0 0 18px}
.stamp{display:inline-block;font-size:.8rem;background:var(--accent-soft);color:var(--accent);border-radius:999px;padding:2px 10px;margin-bottom:12px}
.tool{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:0 1px 2px rgba(0,0,0,.03)}
.tool .grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.tool .full{grid-column:1/-1}
.tool label{display:block;font-size:.9rem;font-weight:600;margin-bottom:4px}
.tool .hint{font-size:.8rem;color:var(--muted);font-weight:400}
.tool input[type=text],.tool input[type=number],.tool input[type=time],.tool select{width:100%;font-size:1rem;padding:10px 12px;border:1px solid #cfd3cd;border-radius:10px;background:#fff;color:var(--ink)}
.tool input:focus,.tool select:focus{outline:2px solid var(--accent);outline-offset:1px}
.unit{position:relative}
.unit input{padding-right:46px}
.unit em{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-style:normal;color:var(--muted);font-size:.9rem}
.seg{display:flex;flex-wrap:wrap;gap:6px}
.seg label{font-weight:500;border:1px solid #cfd3cd;border-radius:999px;padding:6px 12px;cursor:pointer;margin:0;font-size:.92rem}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg label:has(input:checked){background:var(--accent);border-color:var(--accent);color:#fff}
.check{display:flex;gap:8px;align-items:center;font-weight:500!important}
.result{margin-top:18px;border-top:1px dashed var(--line);padding-top:16px}
.big{font-size:1.9rem;font-weight:800;color:var(--accent);line-height:1.2}
.big small{font-size:1rem;color:var(--ink);font-weight:600}
.sub{color:var(--muted);font-size:.9rem;margin-top:4px}
table{width:100%;border-collapse:collapse;margin:12px 0;font-size:.94rem;background:#fff}
th,td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
td{text-align:right;font-variant-numeric:tabular-nums}
table.data td,table.data th{text-align:center}
tr.sum th,tr.sum td{font-weight:800;border-top:2px solid var(--ink)}
.scroll{overflow-x:auto}
.note{font-size:.85rem;color:var(--muted);background:#fafaf8;border-left:3px solid var(--line);padding:10px 12px;margin:14px 0}
.warn{border-left-color:var(--warn)}
article p{margin:10px 0}
article ul,article ol{padding-left:22px}
details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:8px 0}
details summary{font-weight:700;cursor:pointer}
.sources li{font-size:.9rem}
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px;margin:14px 0}
.card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;text-decoration:none;color:var(--ink)}
.card:hover{border-color:var(--accent)}
.card b{display:block;margin-bottom:2px}
.card span{font-size:.86rem;color:var(--muted)}
footer.site{margin-top:60px;border-top:1px solid var(--line);background:#fff;font-size:.85rem;color:var(--muted)}
footer.site .wrap{padding:22px 18px}
footer.site a{color:var(--muted);margin-right:14px}
body.embed{background:#fff}
body.embed .tool{border:none;box-shadow:none;padding:6px 2px}
.embed-foot{font-size:.8rem;color:var(--muted);text-align:right;margin-top:8px}
@media (max-width:600px){.tool .grid{grid-template-columns:1fr}h1{font-size:1.4rem}.big{font-size:1.6rem}nav.cats a{margin:0 12px 0 0}}