:root{color-scheme:light;--bg:#f4f3ef;--paper:#fff;--ink:#242c38;--muted:#6b7179;--line:#dedfdc;--accent:#ba4b29;--soft:#f3e6df;--radius:22px;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.65}main{max-width:1100px;padding:52px 28px 24px;margin:0 auto}.page-head{margin-bottom:32px}.eyebrow{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;letter-spacing:.08em}.brand-mark{background:var(--ink);color:#fff;padding:4px 8px;border-radius:6px;font-weight:700;letter-spacing:.06em}h1{font-size:clamp(28px,4.2vw,44px);line-height:1.25;letter-spacing:-.045em;margin:22px 0 12px}h2,h3,p{margin:0}.intro{color:var(--muted);font-size:16px}.calculator{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:22px}.input-panel,.result-panel{border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:var(--paper);min-width:0}.section-caption{display:flex;justify-content:space-between;gap:8px;align-items:center;font-size:11px;letter-spacing:.08em;color:var(--muted);margin-bottom:20px}.local-badge{letter-spacing:0;background:var(--bg);padding:3px 8px;border-radius:5px}h2{font-size:20px;letter-spacing:-.03em;font-weight:650}form{margin-top:24px}label:not(.check-row){display:block;font-size:13px;font-weight:600;margin:19px 0 8px}form>label:first-child{margin-top:0}input,select,button{font:inherit}input[type=text],input[type=number],select{min-height:50px;padding:12px 14px;border:1px solid var(--line);border-radius:10px;color:var(--ink);background:var(--paper);width:100%;min-width:0}input[type=text]{font-size:24px;font-weight:600;font-variant-numeric:tabular-nums}select{cursor:pointer}input:focus-visible,select:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #bc684c;outline-offset:3px}.damage-row{display:grid;grid-template-columns:minmax(0,1fr) 114px;gap:9px}.field-help,.input-note,.rounding-note{font-size:12px;color:var(--muted)}.field-help{margin-top:8px}.rate-summary{display:flex;align-items:center;justify-content:space-between;margin:16px 0 10px;font-size:13px}.rate-summary strong{font-size:23px;color:var(--accent);font-variant-numeric:tabular-nums}.check-row{display:flex;align-items:center;gap:8px;font-size:13px;min-height:40px;cursor:pointer}.check-row input{width:17px;height:17px;accent-color:var(--accent);flex-shrink:0}.calculate-button{display:flex;justify-content:space-between;align-items:center;background:var(--ink);color:#fff;border:0;border-radius:10px;padding:14px 18px;width:100%;margin-top:20px;cursor:pointer;font-weight:600;min-height:52px}.calculate-button:hover{background:#354151}.calculate-button span{font-size:22px}.input-note{margin-top:16px}.error{color:#a62d28;background:#fff1ee;padding:10px 12px;border-radius:8px;font-size:13px;margin-top:14px}[hidden]{display:none!important}.result-panel{background:#fcfbf8}.result-panel .section-caption span:last-child{color:var(--accent);letter-spacing:0}.result-panel h2{font-size:14px;color:var(--muted);font-weight:500}.result-number{display:flex;align-items:baseline;gap:9px;margin-top:12px;white-space:nowrap;font-variant-numeric:tabular-nums}.result-number .approx{font-size:24px;color:var(--muted)}.result-number strong{font-size:clamp(38px,5.7vw,60px);line-height:1.25;font-weight:650;letter-spacing:-.055em}.exact-result{color:var(--muted);font-size:14px;margin-top:8px;font-variant-numeric:tabular-nums}.result-context{font-size:12px;color:var(--muted);margin-top:22px;overflow-wrap:anywhere}.result-divider{height:1px;background:var(--line);margin:22px 0}.breakdown-heading{display:flex;justify-content:space-between;gap:8px;align-items:center}.breakdown-heading h3{font-size:14px;font-weight:600}.breakdown-heading>span{font-size:12px;color:var(--muted)}.segments{list-style:none;padding:0;margin:16px 0 20px}.segments li{margin-top:15px;padding-left:14px;border-left:2px solid var(--line)}.segments li:first-child{margin-top:0}.segment-title{display:flex;align-items:baseline;justify-content:space-between;gap:12px;font-size:13px}.segment-title strong{font-variant-numeric:tabular-nums;font-size:17px;white-space:nowrap;font-weight:600}.segment-sub{font-size:12px;color:var(--muted);margin-top:5px;overflow-wrap:anywhere}.rounding-note{border-top:1px solid var(--line);padding-top:16px}.rules{margin-top:34px}.rules-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.rules-head h2{font-size:18px}.rules-head>span{font-size:11px;color:var(--muted)}.rule-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px;margin-top:22px}.rule-index{display:inline-flex;color:var(--accent);font-size:12px;font-weight:650;margin-bottom:6px}.rule-grid h3{font-size:14px;font-weight:650;margin-bottom:8px}.rule-grid p{font-size:13px;color:var(--muted)}details{margin-top:24px;border-top:1px solid var(--line);padding:16px 0}summary{font-size:13px;cursor:pointer;color:var(--muted)}pre{font-size:12px;overflow-x:auto;padding:18px;background:#eaeae5;border-radius:10px;line-height:1.8}details p{font-size:12px;color:var(--muted);margin-top:12px}footer{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:11px;border-top:1px solid var(--line);padding-top:18px;margin-top:12px}
@media(max-width:700px){main{padding:28px 18px 20px}.calculator{grid-template-columns:1fr;gap:16px}.input-panel,.result-panel{padding:22px}.page-head{margin-bottom:24px}.rule-grid{grid-template-columns:1fr;gap:20px}.rule-grid>div{display:grid;grid-template-columns:22px 1fr;column-gap:8px}.rule-grid p{grid-column:2}.rule-index{grid-row:1/3}.result-number strong{font-size:50px}.section-caption{margin-bottom:16px}}
.home-link{display:inline-block;color:var(--muted);font-size:12px;text-decoration:none;margin-bottom:22px}.home-link:hover{color:var(--accent)}
@media(prefers-reduced-motion:no-preference){button{transition:background .16s ease}}