@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@500;600&family=IBM+Plex+Sans+KR:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600&display=swap");:root{--paper:#f5f7f4;--paper-deep:#e9ede8;--ink:#1b2a2f;--ink-soft:#4e5d61;--ink-muted:#8a9598;--ledger:#0f6e56;--ledger-soft:#d9ebe4;--ochre:#c8b15a;--rule:#cfd6d2;--font-sans:"IBM Plex Sans","IBM Plex Sans KR",-apple-system,"Apple SD Gothic Neo",sans-serif;--font-mono:"IBM Plex Mono",ui-monospace,monospace;--measure:66ch}*{box-sizing:border-box}html{background:var(--paper);color:var(--ink);font-family:var(--font-sans);font-size:17px;line-height:1.55;-webkit-text-size-adjust:100%}body{margin:0}a{color:var(--ledger);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:3px}:focus-visible{outline:3px solid var(--ochre);outline-offset:2px}@media (prefers-reduced-motion:reduce){*{transition:none!important}}.wrap{max-width:1080px;margin:0 auto;padding:0 20px}.site-head{display:flex;align-items:baseline;justify-content:space-between;padding:22px 0 18px;border-bottom:1px solid var(--rule)}.site-head .brand{font-weight:600;letter-spacing:-.01em;color:var(--ink);font-size:1.05rem}.site-head nav{display:flex;gap:20px;font-size:.92rem}.site-foot{margin-top:72px;padding:28px 0 40px;border-top:1px solid var(--rule);color:var(--ink-soft);font-size:.88rem;display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:space-between}h1{font-size:clamp(1.7rem,3.2vw,2.3rem);line-height:1.15;letter-spacing:-.02em;font-weight:600;margin:34px 0 10px;max-width:24ch}.summary{max-width:var(--measure);color:var(--ink-soft);margin:0 0 30px;font-size:1.02rem}h2{font-size:1.25rem;letter-spacing:-.01em;font-weight:600;margin:44px 0 12px}li,p{max-width:var(--measure)}.calc{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,400px);grid-gap:28px;gap:28px;align-items:start}@media (max-width:760px){.calc{grid-template-columns:1fr}}.inputs{display:grid;grid-gap:16px;gap:16px}.field label{display:block;font-size:.9rem;color:var(--ink-soft);margin-bottom:6px}.field .row{display:flex;align-items:center;gap:8px}.field input,.field select{font:inherit;font-family:var(--font-mono);font-weight:500;font-size:1rem;width:100%;padding:10px 12px;border:1px solid var(--rule);border-radius:6px;background:#fff;color:var(--ink)}.field input:focus,.field select:focus{border-color:var(--ledger)}.field .unit{color:var(--ink-muted);font-size:.9rem;white-space:nowrap;min-width:2.5ch}.field .help{font-size:.8rem;color:var(--ink-muted);margin-top:5px}.results{position:-webkit-sticky;position:sticky;top:20px;background:#fff;border:1px solid var(--rule);border-top:4px solid var(--ledger);border-radius:8px;padding:22px 22px 8px}.results .primary{padding-bottom:16px;margin-bottom:8px;border-bottom:1px dashed var(--rule)}.results .primary .label{font-size:.9rem;color:var(--ink-soft)}.results .primary .value{font-family:var(--font-mono);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-weight:600;font-size:clamp(1.7rem,3.4vw,2.2rem);letter-spacing:-.02em;color:var(--ledger);line-height:1.2;margin-top:4px;word-break:break-all}.results .line{display:flex;justify-content:space-between;gap:12px;align-items:baseline;padding:9px 0;border-bottom:1px solid var(--paper-deep);font-size:.95rem}.results .line:last-child{border-bottom:0}.results .line .label{color:var(--ink-soft)}.results .line .value{font-family:var(--font-mono);font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-weight:500;white-space:nowrap}.results .note{font-size:.8rem;color:var(--ochre);filter:brightness(.75);margin-top:4px}.disclaimer{font-size:.8rem;color:var(--ink-muted);margin:14px 0 0;padding:0 0 8px}.assumptions{padding-left:1.1rem}.assumptions li{margin-bottom:6px}.faq details{border-top:1px solid var(--rule);padding:12px 0}.faq details:last-child{border-bottom:1px solid var(--rule)}.faq summary{cursor:pointer;font-weight:500}.faq details p{margin:10px 0 0;color:var(--ink-soft)}.meta{color:var(--ink-muted);font-size:.85rem;margin-top:30px}.cluster{margin-top:36px}.cluster h2{margin-top:0}.list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));grid-gap:10px 28px;gap:10px 28px}.list li{border-top:1px solid var(--rule);padding:12px 0 14px}.list a{color:var(--ink);font-weight:500}.list .desc{display:block;color:var(--ink-soft);font-size:.9rem;margin-top:3px;max-width:40ch}.hero{margin:40px 0 8px}.hero p{color:var(--ink-soft)}.prose p{margin:0 0 14px}