:root{font-family:system-ui,-apple-system,"Segoe UI","Noto Sans JP",sans-serif;color:#18313f;background:#f2f6f8;font-size:16px;line-height:1.7;--accent:#006d77;--border:#c9d8df;--error:#a22424}*{box-sizing:border-box}body{margin:0}header{background:#fff;border-bottom:1px solid var(--border)}.brand{max-width:1220px;margin:auto;padding:12px 28px;font-size:21px;font-weight:750;letter-spacing:.02em}.brand>a{display:inline-flex;align-items:center}.brand>a img{display:block;width:auto;height:54px;max-width:min(330px,70vw);object-fit:contain}.brand small{font-size:14px;font-weight:400;float:right;color:#506774}main{max-width:1220px;margin:auto;padding:32px 28px 60px}.intro{margin-bottom:28px}.eyebrow{font-size:14px;font-weight:750;letter-spacing:.1em;color:var(--accent);margin:0 0 6px}h1{font-size:clamp(26px,3.5vw,38px);letter-spacing:.02em;line-height:1.4;margin:0 0 12px}h2{font-size:22px;line-height:1.5;margin:0 0 20px}h3{font-size:17px}p{margin:10px 0}.privacy{font-size:14px;color:#00616a;font-weight:600}.workspace{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:24px}.panel{background:#fff;border:1px solid var(--border);border-radius:12px;padding:26px;min-width:0}.result-panel{border-top:4px solid var(--accent)}label{display:block;font-weight:600;font-size:14px;margin-bottom:5px}input{width:100%;min-width:0;font:inherit;padding:9px 12px;border:1px solid #829ba8;border-radius:5px;background:#fff;color:#18313f;min-height:46px}input:focus,button:focus-visible,a:focus-visible,#result-title:focus{outline:3px solid #007e8b;outline-offset:3px}input[aria-invalid=true]{border:2px solid var(--error)}.n-control{display:flex;align-items:center;gap:12px}.n-control input{width:100px}.help{font-size:14px;color:#4d6370}.scope{font-size:14px;font-weight:700;color:var(--accent);margin-top:18px}fieldset{min-width:0;border:1px solid var(--border);border-radius:8px;margin:20px 0;padding:18px}legend{padding:0 9px;color:var(--accent);font-weight:700}.input-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.wide{grid-column:1/-1}.unit-input{display:flex;align-items:center;gap:10px}.unit-input span{font-size:14px;white-space:nowrap;min-width:36px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}button{cursor:pointer;min-height:46px;font:inherit;font-weight:600;border:1px solid #8ca2ae;border-radius:6px;padding:10px 16px;background:#fff;color:#18313f}.primary{background:var(--accent);color:white;border-color:var(--accent);flex:1}.primary span{margin-left:12px}button:hover{filter:brightness(.94)}.field-error{font-size:14px;color:var(--error);margin-top:5px}.error-summary{padding:14px;background:#fff0f0;border-left:4px solid var(--error);color:var(--error);margin-bottom:20px}.error-summary a{color:inherit}.disclaimer{border-top:1px solid var(--border);padding-top:20px;margin-top:26px;font-size:14px;color:#4d6370}#status{color:#4d6370}#results:empty{min-height:130px}.main-result{background:#e9f5f5;padding:20px;border-radius:8px;margin:16px 0}.result-number{font-size:clamp(26px,3vw,36px);font-weight:750;color:#00616a;overflow-wrap:anywhere;line-height:1.5}.result-number small{font-size:18px}.stats{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}.stats div{padding:12px;background:#f2f6f8;border-radius:6px}.stats dt{font-size:14px;color:#4d6370}.stats dd{margin:4px 0 0;font-weight:650;overflow-wrap:anywhere}.sample-result{border-top:1px solid var(--border);margin-top:24px;padding-top:12px;overflow-wrap:anywhere}.sample-result h3{color:#00616a}.conditions{font-size:14px;background:#f2f6f8;padding:12px;white-space:pre-wrap;overflow-wrap:anywhere}.steps{padding-left:23px}.steps li{margin:12px 0}.steps strong{display:block;font-size:14px}.warning{padding:12px;border-left:4px solid #9e6000;background:#fff5e4;color:#754400;font-size:14px}.explanation{margin-top:32px;background:#fff;border-top:2px solid var(--border);padding:26px;border-radius:4px;overflow-wrap:anywhere}.formula{background:#edf3f6;border-left:3px solid var(--accent);padding:16px;margin:16px 0;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}footer{max-width:1164px;margin:auto;padding:24px 28px;border-top:1px solid var(--border);font-size:14px;color:#4d6370}[hidden]{display:none!important}@media(max-width:899px){.workspace{grid-template-columns:1fr}.brand small{float:none;display:block;margin-top:3px}}@media(max-width:480px){main{padding:24px 12px 40px}.brand{padding:16px}.panel,.explanation{padding:18px}.input-grid,.stats{grid-template-columns:1fr}.wide{grid-column:auto}fieldset{padding:13px}.actions .primary{flex-basis:100%}.actions button:not(.primary){flex:1;padding:10px 8px}.intro br{display:none}}
.result-comparison{width:100%;table-layout:fixed;border-collapse:collapse;margin:18px 0 24px;font-variant-numeric:tabular-nums}.result-comparison caption{text-align:left;font-size:17px;font-weight:700;padding-bottom:12px}.result-comparison th,.result-comparison td{padding:10px 12px;border-bottom:1px solid var(--border);overflow-wrap:anywhere}.result-comparison th{text-align:left;font-weight:600}.result-comparison td,.result-comparison thead th:last-child{text-align:right}.result-comparison thead{background:#edf3f6;font-size:14px}.result-comparison thead th:first-child{width:38%}.result-comparison thead small{font-size:14px;font-weight:400}.result-comparison tfoot{background:#e9f5f5;color:#00616a;font-weight:750}.result-comparison tfoot tr:first-child{border-top:2px solid var(--accent)}
.data-actions{margin-top:24px;padding-top:20px;border-top:1px solid var(--border)}.data-actions h3{margin-top:0}.data-actions .actions{margin-top:0}.data-actions button{flex:1}button:disabled{cursor:not-allowed;opacity:.5;filter:none}#export-csv{width:100%;margin-top:8px}
.common-fields{background:#f3f8f9;margin-top:20px}.sample-fields{margin:12px 0}.override-label{display:inline-flex;align-items:center;gap:8px;margin:14px 0 0;cursor:pointer}.override-label input{width:18px;min-height:18px;height:18px;accent-color:var(--accent)}.override-fields{border-top:1px solid var(--border);padding-top:14px;margin-top:8px}