:root{--ink:#15243c;--muted:#53657c;--line:#dce5ef;--blue:#215feb;--bg:#f4f7fb}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 Arial,'Noto Sans KR',sans-serif}a{color:#1e57cc}button,input,select{font:inherit}button,a,input,summary{touch-action:manipulation}button{cursor:pointer}header,main,footer{max-width:1160px;margin:auto;padding:0 24px}header{display:flex;justify-content:space-between;gap:20px;align-items:center;min-height:80px;border-bottom:1px solid var(--line)}header nav{display:flex;gap:20px;flex-wrap:wrap;font-size:14px}header a{text-decoration:none}.brand{font-size:21px;font-weight:800;color:var(--ink);white-space:nowrap}.brand span{color:var(--blue)}.intro{padding:32px 0 20px}.eyebrow{font-size:12px;font-weight:800;letter-spacing:2px;color:var(--blue);margin:0 0 8px}h1{font-size:34px;line-height:1.3;letter-spacing:-1px;margin:10px 0}h2{font-size:23px;line-height:1.4}h3{font-size:18px}p{margin:8px 0 16px}.muted,.hint{color:var(--muted)}.hint{font-size:14px}.example{padding:12px 16px;border-left:4px solid #dc9300;background:#fff4d9;font-size:14px;margin-bottom:22px}.common{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;background:#e8eff9;padding:20px;border-radius:12px;margin-bottom:22px}label{display:block;font-size:14px;font-weight:600}input,select{width:100%;min-width:0;margin:6px 0 0;background:white;color:var(--ink);border:1px solid #bdcbde;border-radius:7px;padding:10px 12px;min-height:46px}input:focus,select:focus{outline:2px solid var(--blue);outline-offset:2px}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:3px}input:invalid{border-color:#bc3f3f}.main-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:start}.products{display:grid;gap:18px}.product{border:1px solid var(--line);border-radius:12px;background:white;padding:20px}.product h2{display:flex;align-items:center;gap:10px;margin:0 0 18px}.badge{display:inline-grid;place-items:center;width:31px;height:31px;background:#172b49;color:white;border-radius:7px;font-size:16px}.badge.b{background:var(--blue)}.fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}.full{grid-column:1/-1}.product details{margin-top:18px;border-top:1px solid var(--line);padding-top:14px}.product details .fields{margin-top:14px}summary{cursor:pointer;font-size:14px;font-weight:700}.toggle{margin-top:16px;display:flex;align-items:flex-start;gap:10px;font-weight:400}.toggle input{width:18px;min-height:18px;margin-top:3px;flex-shrink:0}.answer{position:sticky;top:20px;border-radius:14px;background:#14243c;color:white;padding:26px}.answer .eyebrow{color:#a9c8ff}.answer h2{font-size:28px;line-height:1.45;margin:12px 0}.answer .hint{color:#c1d0e6}.callout{background:#253c5e;padding:16px;border-radius:9px;margin:18px 0}.callout strong{display:block;font-size:25px;color:#b9e9ff}.callout p{font-size:14px;margin:4px 0}.totals{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}.totals>div{border-bottom:2px solid #758aa9;padding:12px 0}.totals>div:last-child{border-color:#7aa8ff}.totals span{display:block;font-size:14px;overflow-wrap:anywhere}.totals strong{font-size:23px}.answer details{border-top:1px solid #405371;padding-top:16px;margin-top:22px}.answer summary{font-size:14px}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:14px;text-align:right}th,td{padding:10px 8px;border-bottom:1px solid var(--line);white-space:nowrap}th:first-child,td:first-child{text-align:left}.answer th,.answer td{border-color:#405371}button,.button{display:inline-block;border-radius:7px;border:1px solid #bdcbde;background:white;color:var(--ink);padding:10px 15px;font-size:14px;text-decoration:none}.primary{background:var(--blue);color:white;border-color:var(--blue)}.actions{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0}.error{color:#a42929;font-size:14px}.links{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}.link-card{display:block;text-decoration:none;color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:22px;background:white}.link-card p{color:var(--muted);font-size:14px}.link-card strong{font-size:18px}.explain{margin:46px 0;border-top:1px solid var(--line);padding-top:22px}.explain p{max-width:850px}.status{font-size:14px;color:var(--muted)}footer{padding-top:24px;padding-bottom:30px;border-top:1px solid var(--line);font-size:14px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}.article{max-width:820px}.article h2{margin-top:32px}.article li{margin:12px 0}.article .formula{padding:18px;background:#e8eff9;border-radius:8px}.article nav{margin:20px 0}.model-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:24px;align-items:start}.model-input{padding:22px;border:1px solid var(--line);border-radius:12px;background:white}.metrics{display:grid;grid-template-columns:1fr 1fr;gap:14px}.metric{padding:18px;background:#e8eff9;border-radius:9px}.metric strong{display:block;font-size:26px}.metric span{font-size:14px}.todo{padding:20px;background:white;border:1px solid var(--line);border-radius:12px;margin:20px 0}.todo li{margin:12px 0}.offers a{display:block;margin:12px 0}.answer dl{font-size:14px}.answer dd{margin:0 0 10px;font-weight:700}[hidden]{display:none!important}.noscript{padding:24px;background:#fff4d9} @media(max-width:900px){.main-grid,.model-grid{grid-template-columns:1fr}.answer{position:static}.common{grid-template-columns:1fr 1fr}}@media(max-width:550px){header{align-items:flex-start;flex-direction:column;padding-top:18px;padding-bottom:15px;gap:10px}header nav{gap:14px}h1{font-size:28px}.common{padding:16px;gap:12px}.answer{padding:20px}.answer h2{font-size:25px}.fields{gap:12px}.totals strong{font-size:20px}.links{grid-template-columns:1fr}header,main,footer{padding-left:16px;padding-right:16px}.metric strong{font-size:23px}}@media print{body{background:white}.intro,.common,.products,header,footer,.actions,.explain,.links,.example,.toggle,.offers,#save-state,#input-error{display:none!important}.main-grid{display:block}.answer{position:static;background:white;color:black;border:1px solid #aaa}.answer .hint,.answer .eyebrow,.callout strong{color:black}.callout{background:#eee}.answer details{display:block}.answer details>*{display:block}.answer h2{font-size:22px}main{padding:0}}
