:root{font:16px/1.5 Arial,Helvetica,sans-serif;color:#123953;background:#edf3f9;font-synthesis:none;--blue:#0019a5;--muted:#526b80}
*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;background:radial-gradient(ellipse at top left,#e2eeff,transparent 65%),#edf3f9}
main{max-width:940px;margin:auto;padding:24px}header{margin-bottom:20px}.back{display:inline-block;color:#385b78;text-decoration:none;font-size:13px;margin-bottom:16px}.back:hover{text-decoration:underline}h1{font-size:clamp(25px,4vw,32px);line-height:1.2;letter-spacing:-.035em;margin:0}
.workspace{display:grid;grid-template-columns:1fr 1fr;gap:18px}.calculator,.result-panel{border-radius:18px;padding:24px}.calculator{background:#fff;border:1px solid #d5e1ef;box-shadow:0 5px 18px #19385908}
label:not(.switch){display:block;font-size:14px;font-weight:700;margin:17px 0 7px}label:first-child{margin-top:0}.field-help{font-size:12px;color:var(--muted);margin:-3px 0 8px}.data-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:17px 0 7px;flex-wrap:wrap}.data-heading label:not(.switch){margin:0;flex:1;min-width:130px}.data-heading .switch{margin:0;min-height:44px}.form-actions{display:flex;justify-content:flex-end;margin-top:12px}.form-actions button{font:inherit;font-size:13px;color:#385b78;border:1px solid #bdcbda;border-radius:9px;background:#f6f9fd;min-height:44px;padding:8px 13px;cursor:pointer}.form-actions button:hover{background:#e7efff;color:#0019a5}label span{font-weight:400;color:var(--muted);font-size:12px}select,input[type=text]{font:inherit;color:#123953;width:100%;min-width:0;border:0;background:transparent;padding:0;outline:none}select{border:1px solid #bdcbda;background:#fff;border-radius:10px;padding:10px 12px;font-size:16px;min-height:44px}input[type=text]{font-size:23px;font-weight:700}.input-unit{display:flex;align-items:center;gap:10px;border:1px solid #bdcbda;border-radius:10px;min-height:50px;padding:8px 12px}.input-unit>span{font-size:15px;color:var(--muted)}.input-unit:focus-within{outline:3px solid #91b4ff;outline-offset:2px;border-color:var(--blue)}button:focus-visible,select:focus-visible,a:focus-visible,summary:focus-visible,input[type=checkbox]:focus-visible{outline:3px solid #91b4ff;outline-offset:3px}input[aria-invalid=true]{color:#a51c2c}.hint{font-size:12px;color:var(--muted);margin:8px 0 0;line-height:1.5}.switch{display:flex;align-items:center;gap:10px;margin-top:18px;cursor:pointer;min-height:44px;font-size:14px}.switch input{accent-color:var(--blue);width:20px;height:20px;margin:0;flex:none}.switch span{font:inherit;color:inherit}.error{margin:12px 0 0;font-size:13px;color:#a51c2c}
.result-panel{background:linear-gradient(145deg,#001783,#0051c6);color:white;box-shadow:0 8px 22px #002c971f;display:flex;flex-direction:column;justify-content:space-between}.result-panel h2{font-size:16px;font-weight:400;margin:0 0 18px;color:#dbeaff}.result{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px;line-height:1.15;margin:0;color:#d5e7ff;font-size:20px}#result-prefix{font-size:15px}#result-value{font-size:clamp(42px,5vw,57px);letter-spacing:-.045em;color:white;overflow-wrap:anywhere}.period{font-size:13px;color:#dbeaff;margin:9px 0 0}#result-status{font-size:14px;font-weight:700;margin:18px 0 0}#year-comparison{border-top:1px solid #ffffff40;padding-top:12px;margin:14px 0 0;font-size:13px;line-height:1.6;color:#e5f0ff;white-space:pre-line}.result-note{margin:20px 0 0;font-size:13px;line-height:1.5;color:#e5f0ff}
.notes{display:grid;gap:9px;margin-top:18px}.notes details{background:#ffffffb3;border:1px solid #d2dfeb;border-radius:12px;overflow:hidden}.notes summary{padding:13px 16px;cursor:pointer;font-size:14px;font-weight:700}.notes details[open] summary{border-bottom:1px solid #d9e4ef}.notes h2{font-size:13px;margin:15px 16px 3px}.notes p,.notes ul{margin:10px 16px;font-size:12px;color:#3f5b71}.notes details>:last-child{margin-bottom:16px}.notes details>a{display:inline-block;margin:0 16px;font-size:12px}.notes a{color:#003dad;text-underline-offset:3px}
@media(max-width:640px){main{padding:20px 16px}.workspace{grid-template-columns:1fr;gap:12px}.calculator,.result-panel{padding:20px;border-radius:16px}.back{margin-bottom:14px}header{margin-bottom:17px}.result-panel h2{margin-bottom:10px}#result-value{font-size:48px}.result-note{margin-top:17px}.notes{margin-top:14px}}
@media print{body{background:white}main{max-width:none;padding:0}.back{display:none}.workspace{grid-template-columns:1fr 1fr}.calculator,.result-panel{box-shadow:none}.result-panel{background:white;border:1px solid #bdcbda}.result-panel :is(h2,p,#result-value,.result){color:#123953}details{break-inside:avoid}}