:root{color-scheme:light;--bg:#fdfaf5;--ink:#1a1a17;--muted:#625b52;--line:#d8d0c0;--accent:#a74708;--surface:#fff;--soft:#f5efe4}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:"Noto Sans KR","Malgun Gothic",sans-serif;font-size:16px;line-height:1.7}a{color:inherit;text-underline-offset:4px}header,main,footer{max-width:1160px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;align-items:center;border-bottom:2px solid var(--ink);gap:16px}.brand{font-family:Georgia,"Malgun Gothic",serif;font-size:26px;font-weight:700;text-decoration:none}.brand span{color:var(--accent)}nav{display:flex;gap:24px;font-size:14px}.intro{padding:20px 0 26px}.eyebrow{color:var(--accent);font-size:14px;font-weight:700;letter-spacing:.04em;margin:0 0 8px}h1{font-size:clamp(26px,4vw,38px);line-height:1.35;margin:0 0 12px;letter-spacing:-.04em}h2{font-size:20px;line-height:1.5;margin:0 0 16px}.intro>p:last-child{color:var(--muted);margin:0}.workspace{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}.inputs,.results{padding:28px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}.results{background:var(--soft);border-top:4px solid var(--accent);position:sticky;top:24px}label{display:block;font-size:14px;font-weight:700;margin:0 0 6px}input,select,button{font:inherit}input,select{width:100%;min-width:0;min-height:48px;padding:10px 12px;border:1px solid #a69c8d;border-radius:4px;background:var(--surface);color:var(--ink)}button{cursor:pointer;border-radius:4px;font-size:14px;min-height:44px;font-weight:700}button:disabled{cursor:default;opacity:.5}.fields{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:18px 0}.field{margin:0 0 18px}.help{font-size:14px;color:var(--muted);margin:8px 0 16px}.primary{width:100%;background:var(--accent);color:#fff;border:1px solid var(--accent);padding:14px}.amount{font-size:clamp(28px,4vw,42px);font-weight:700;letter-spacing:-.035em;font-variant-numeric:tabular-nums;overflow-wrap:anywhere;line-height:1.4;margin:8px 0}.after{margin:0 0 22px;font-size:18px}.after strong{color:var(--accent)}dl{margin:16px 0}dl>div{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line)}dt{font-size:14px;color:var(--muted)}dd{margin:0;text-align:right;font-weight:700;font-variant-numeric:tabular-nums}.notice{background:#fff7ed;border-left:3px solid var(--accent);padding:12px 16px;font-size:14px}.error{color:#a31c1c;font-weight:700}.guide{max-width:850px;margin:42px 0}.formula{padding:18px;background:var(--soft);border-left:3px solid var(--accent);font-weight:700}.scenario{width:100%;border-collapse:collapse;margin-top:16px}.scenario th,.scenario td{padding:12px 8px;border-bottom:1px solid var(--line);text-align:right}.scenario th:first-child,.scenario td:first-child{text-align:left}details{border-bottom:1px solid var(--line);padding:16px 0}summary{cursor:pointer;font-weight:700}details p{color:var(--muted)}.related{display:flex;flex-wrap:wrap;gap:14px 28px}.related a{color:var(--accent)}footer{border-top:1px solid var(--line);font-size:14px;color:var(--muted);margin-top:30px;padding-bottom:40px}:focus-visible{outline:3px solid var(--accent);outline-offset:4px}[hidden]{display:none!important}@media(max-width:760px){header,main,footer{padding:18px}.workspace{grid-template-columns:1fr}.inputs,.results{padding:20px}.results{position:static}nav{gap:12px}.intro{padding:18px 0 24px}}@media(max-width:520px){.fields{grid-template-columns:1fr}.scenario{font-size:14px}}@media(max-width:380px){header{align-items:flex-start;flex-wrap:wrap}dl>div{flex-wrap:wrap}dd{margin-left:auto}}