:root{--ink:#24243e;--red:#bf2946;--muted:#606579}*{box-sizing:border-box}body{margin:0;background:#f5f6fa;color:var(--ink);font:16px/1.65 system-ui,sans-serif}header{display:flex;align-items:center;gap:24px;padding:18px max(22px,calc((100vw - 1040px)/2));background:white;border-bottom:1px solid #dfe2eb}a{color:var(--red)}.brand{font-weight:750;color:var(--ink);text-decoration:none;margin-inline-end:auto}main{max-width:1040px;margin:36px auto;padding:0 22px 60px}h1{font-size:clamp(30px,5vw,42px);line-height:1.2;margin:8px 0 16px}h2{font-size:22px;margin:0 0 18px}.eyebrow{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--red);font-weight:700}.mode{max-width:300px;margin:25px 0}.layout{display:grid;grid-template-columns:1.1fr 1fr;gap:24px}.card{background:white;border:1px solid #dfe2eb;border-radius:18px;padding:28px}.result{align-self:start;border-top:4px solid #6961a7}label{display:block;font-weight:600;margin:14px 0 6px}input,select{width:100%;font:inherit;padding:11px;border:1px solid #bfc4d4;border-radius:8px;background:white;color:var(--ink);min-height:48px}input{direction:ltr}.refraction{display:grid;grid-template-columns:1fr 1fr;gap:16px}.number{font-size:48px;line-height:1.2;font-weight:750;margin:20px 0}.result[data-state=warning],.result[data-state=invalid]{border-top-color:var(--red)}.result[data-state=warning] .number{color:var(--red)}.small{font-size:13px;color:var(--muted)}button{font:inherit;padding:10px 18px;min-height:44px;border:1px solid #bcc2d3;border-radius:8px;background:white;cursor:pointer}.notice{padding:22px;background:#fff5dc;border:1px solid #ead6a4;border-radius:12px;margin:24px 0}.notes{margin-top:30px}hr{border:0;border-top:1px solid #e2e5ee}[hidden]{display:none!important}:focus-visible{outline:3px solid #276fa5;outline-offset:3px}@media(max-width:680px){.layout{grid-template-columns:1fr}.card{padding:22px}header{gap:12px;flex-wrap:wrap}header a{font-size:14px}.mode{max-width:none}}

.result[data-state=neutral] .number{color:#187447}.result[data-state=neutral]{border-top-color:#187447}