:root{color:#24292f;background:#f4f1ec;font-family:Avenir Next,Candara,Segoe UI,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{min-width:320px;margin:0}button,input{font:inherit}.calculator-shell{min-height:100vh;padding:32px;display:grid;place-items:center;background:linear-gradient(90deg,rgba(53,83,98,.08) 1px,transparent 1px),linear-gradient(rgba(53,83,98,.08) 1px,transparent 1px),#f4f1ec;background-size:28px 28px}.calculator-panel{width:min(100%,980px);display:grid;grid-template-columns:minmax(0,.9fr) minmax(360px,1.1fr);border:1px solid #26323a;border-radius:8px;overflow:hidden;background:#fffdf8;box-shadow:12px 12px #26323a}.calculator-intro{min-height:560px;padding:44px;display:flex;flex-direction:column;justify-content:flex-end;background:linear-gradient(135deg,#21534ce6,#21534cad),url(https://images.unsplash.com/photo-1571019613576-2b22c76fd955?auto=format&fit=crop&w=1400&q=80) center/cover;color:#fffdf8}.eyebrow{margin:0 0 18px;color:#ffd166;font-size:.82rem;font-weight:800;letter-spacing:0;text-transform:uppercase}h1{max-width:12ch;margin:0;font-size:4rem;line-height:.96;letter-spacing:0}.calculator-intro p:last-child{max-width:36ch;margin:22px 0 0;color:#fffdf8e0;font-size:1.05rem;line-height:1.55}.calculator-workspace{padding:44px;display:grid;align-content:center;gap:20px}.calculator-form{display:grid;gap:20px}.validation-summary{min-height:42px;margin:0;padding:11px 14px;border:1px solid #9a3324;border-radius:8px;color:#7b2418;background:#fff1e8;font-weight:800}.field-group{display:grid;grid-template-columns:1fr auto;grid-template-areas:"label label" "input unit" "error error";gap:8px 12px;min-height:124px}.field-group span{grid-area:label;display:inline-flex;align-items:center;gap:8px;color:#26323a;font-size:.96rem;font-weight:800}.field-group svg{color:#d95d39}.field-group input{grid-area:input;width:100%;height:54px;border:1px solid #8e9a9b;border-radius:8px;padding:0 14px;color:#24292f;background:#fff}.field-group input:focus{outline:3px solid rgba(255,209,102,.72);border-color:#26323a}.field-group input[aria-invalid=true]{border-color:#9a3324;background:#fff8f2}.field-group small{grid-area:unit;min-width:48px;height:54px;display:inline-grid;place-items:center;border:1px solid #8e9a9b;border-radius:8px;color:#26323a;background:#e9f1eb;font-weight:800}.field-error{grid-area:error;color:#9a3324;font-size:.86rem;font-style:normal;font-weight:800;line-height:1.35}.calculate-button{width:100%;height:56px;display:inline-flex;align-items:center;justify-content:center;gap:10px;border:1px solid #26323a;border-radius:8px;color:#fffdf8;background:#d95d39;font-weight:900;cursor:pointer;box-shadow:5px 5px #26323a}.calculate-button:focus,.calculate-button:hover{transform:translate(1px,1px);box-shadow:4px 4px #26323a}.results-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.results-panel article{min-height:132px;padding:18px;display:grid;align-content:space-between;border:1px solid #26323a;border-radius:8px;background:#f9efe8}.results-panel span{color:#526068;font-size:.88rem;font-weight:900}.results-panel strong{display:block;margin-top:8px;color:#26323a;font-size:2rem;line-height:1}.results-panel small{margin-top:10px;color:#5f676a;font-weight:800;line-height:1.35}.result-note{grid-column:1 / -1;min-height:44px;margin:0;padding:12px 14px;border:1px solid #7b8e82;border-radius:8px;color:#33433b;background:#edf6ef;font-weight:800;line-height:1.35}@media (max-width: 820px){.calculator-shell{padding:18px;place-items:start center}.calculator-panel{grid-template-columns:1fr;box-shadow:7px 7px #26323a}.calculator-intro{min-height:320px;padding:30px 24px}h1{max-width:13ch;font-size:2.65rem}.calculator-workspace{padding:28px 22px 30px}.results-panel{grid-template-columns:1fr}}