:root{color:#1f2933;background:#f4f7f8;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button,input,select{font:inherit}.app-shell{width:min(100%,920px);margin:0 auto;padding:40px 20px 56px}.intro{margin-bottom:24px;text-align:center}.intro h1{margin:0 0 12px;color:#12355b;font-size:36px;font-weight:800;letter-spacing:0}.intro p{margin:0;color:#4b5563;font-size:18px;line-height:1.7}.calculator-panel{padding:28px;border:1px solid #d7e0e5;border-radius:8px;background:#fff;box-shadow:0 12px 32px #1f293314}.status-text{margin:0 0 16px;color:#4b5563;font-size:16px}.form-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.field{display:flex;min-width:0;flex-direction:column;gap:8px}.field-label{color:#1f2933;font-size:17px;font-weight:700}select,input{width:100%;min-height:56px;border:2px solid #c8d4dc;border-radius:8px;background:#fff;color:#111827;font-size:18px}select{padding:0 42px 0 14px}input{padding:0 48px 0 14px}select:focus,input:focus{border-color:#1268a8;outline:3px solid rgb(18 104 168 / 18%)}select:disabled{background:#eef2f4;color:#6b7280;cursor:not-allowed}.number-input-wrap{position:relative}.unit-label{position:absolute;top:50%;right:16px;color:#4b5563;font-size:17px;font-weight:700;transform:translateY(-50%)}.field-error,.form-error{color:#b42318;font-size:15px;font-weight:700;line-height:1.6}.form-error{margin:18px 0 0}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.primary-button,.secondary-button{min-height:56px;border-radius:8px;padding:0 22px;font-size:18px;font-weight:800;cursor:pointer}.primary-button{border:2px solid #0b5c94;background:#0b5c94;color:#fff;box-shadow:0 8px 18px #0b5c9433}.primary-button:hover{background:#084b7a}.secondary-button{border:2px solid #b8c6ce;background:#fff;color:#23313d}.secondary-button:hover{background:#f3f6f8}.price-result{margin-top:28px;border-top:1px solid #dbe4ea;padding-top:24px}.total-panel{display:flex;align-items:center;justify-content:space-between;gap:16px;border-radius:8px;background:#12355b;color:#fff;padding:22px 24px}.total-panel span{font-size:20px;font-weight:800}.total-panel strong{font-size:34px;line-height:1.2}.result-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin:20px 0 0;border:1px solid #dbe4ea;border-radius:8px;overflow:hidden}.result-list div{display:flex;justify-content:space-between;gap:12px;min-width:0;padding:16px;border-bottom:1px solid #dbe4ea}.result-list div:nth-child(odd){border-right:1px solid #dbe4ea}.result-list div:nth-last-child(-n+2){border-bottom:0}.result-list dt,.result-list dd{margin:0;line-height:1.5}.result-list dt{flex:0 0 auto;color:#4b5563;font-weight:700}.result-list dd{min-width:0;color:#111827;font-weight:800;text-align:right;overflow-wrap:anywhere}.error-message{display:flex;flex-direction:column;gap:6px;border:2px solid #f1b8b0;border-radius:8px;background:#fff4f2;color:#9f1c12;padding:18px;font-size:17px;line-height:1.6}@media(max-width:760px){.app-shell{padding:28px 14px 40px}.intro h1{font-size:30px}.intro p{font-size:16px}.calculator-panel{padding:20px}.form-grid,.result-list{grid-template-columns:1fr}.result-list div:nth-child(odd){border-right:0}.result-list div:nth-last-child(2){border-bottom:1px solid #dbe4ea}.actions{flex-direction:column}.primary-button,.secondary-button{width:100%}.total-panel{align-items:flex-start;flex-direction:column}.total-panel strong{font-size:30px}}