.calculator-layout{display:grid;grid-template-columns:minmax(0,420px) minmax(0,1fr);gap:48px;align-items:start}.calculator{padding:22px;background:#eeefeb;border:1px solid #cbd5d5;border-radius:18px;max-width:420px;width:100%;box-sizing:border-box}.calculator:focus-visible{outline:3px solid #27677a;outline-offset:5px}.calc-screen{background:#fafaf7;border:1px solid #cbd5d5;border-radius:10px;padding:18px;text-align:right;margin-bottom:18px;overflow-wrap:anywhere}#calc-expression{min-height:24px;font-size:13px;color:#465d66;margin:0 0 12px}#calc-display{display:block;font-size:clamp(24px,6vw,34px);font-variant-numeric:tabular-nums;line-height:1.35;color:#142c35}.calc-keys{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.calc-keys button{min-height:58px;min-width:0;padding:10px;font-size:21px;border:1px solid #c2cece;border-radius:9px;background:#fafaf7;color:#142c35;touch-action:manipulation}.calc-keys button:hover{background:#e2e9e8}.calc-keys button:focus-visible{outline:3px solid #27677a;outline-offset:2px}.calc-keys .calc-op{background:#dbe9ec;color:#124d5d}.calc-keys .calc-equals{background:#b76a16;color:#fff}.calc-keys .calc-equals:hover{background:#96540f}.calc-zero{grid-column:span 2}.calculator-notes h2{margin-top:0}.calculator-notes p{line-height:1.7}#calc-error{min-height:24px;margin-bottom:0}@media(max-width:700px){.calculator-layout{grid-template-columns:minmax(0,1fr);gap:28px}.calculator{margin:auto;padding:16px}.calc-keys{gap:8px}}