.bench { max-width: 1140px; margin: 0 auto; padding: 56px 28px; }
.bench-intro { max-width: 800px; padding-bottom: 32px; }
.bench h1 { font: 500 clamp(36px,5vw,62px)/1.12 var(--display); margin: 12px 0 22px; }
.bench h2 { font: 500 28px/1.25 var(--display); margin: 0 0 18px; }
.bench p { max-width: 80ch; }
.context,.source-line,.small { color: var(--muted); font-size: 14px; }
.bench section { border-top: 1px solid var(--line); padding: 30px 0; }
.bench button,.bench select,.bench input[type=number] { font: inherit; color: var(--ink); background: var(--panel-solid); border: 1px solid #486079; padding: 9px 12px; border-radius: 5px; }
.bench button { cursor: pointer; }
.bench button:hover,.bench button.active { border-color: var(--lamp); }
.presets { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 25px; }
.controls { display: grid; grid-template-columns: repeat(3,1fr); gap: 22px; }
.controls label { display: flex; flex-direction: column; font-size: 14px; }
.controls output { color: var(--lamp); font-size: 22px; }
.controls input[type=range] { accent-color: var(--lamp); width: 100%; margin-top: 10px; }
.section-head { display: flex; gap: 20px; align-items: center; justify-content: space-between; flex-wrap: wrap; }
.section-head label { font-size: 14px; }
.table-scroll { overflow-x: auto; }
.bench table { width: 100%; border-collapse: collapse; font-size: 14px; white-space: nowrap; }
.bench td,.bench th { padding: 14px 12px; text-align: right; border-bottom: 1px solid var(--line); font-variant-numeric: tabular-nums; }
.bench th { color: var(--muted); font-weight: 500; }
.bench td:first-child,.bench th:first-child { text-align: left; }
.bench tr.selected { background: #182c3c; }
.bad-value { color: var(--bad); }
.good-value { color: var(--good); }
.verdict { border-left: 3px solid var(--lamp); padding: 8px 20px; margin-top: 24px; background: #101d2b; }
.verdict p { margin: 6px 0; }
.plot { margin-top: 22px; }
.plot svg { display: block; width: 100%; height: auto; }
.plot text { fill: var(--muted); font: 13px var(--body); }
.chart-key,.heat-key { display: flex; flex-wrap: wrap; gap: 20px; font-size: 13px; }
.planned-key { color: #a6b7c6; }
.delivered-key { color: var(--lamp); }
.heat-key span::before { content: ''; display: inline-block; width: 10px; height: 10px; margin-right: 7px; background: var(--cell); }
.charge { --cell: #5793bb; }.discharge { --cell: #ffc46b; }.stale { --cell: #ba9ad9; }.breach { --cell: #f08a6e; }.hold { --cell: #24374c; }
.fleet-map { margin: 20px 0; display: grid; grid-template-columns: repeat(4,1fr); gap: 6px; max-height: 380px; overflow-y: auto; }
.fleet-row { display: flex; align-items: center; gap: 6px; padding: 4px!important; }
.fleet-row b { width: 26px; font-size: 11px; font-weight: 400; }
.cells { display: grid; grid-template-columns: repeat(24,1fr); gap: 1px; flex: 1; }
.cells i { display: block; height: 12px; background: var(--cell); }
.ledger-head { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin: 18px 0; font-size: 14px; }
.ledger-head input { width: 85px; }
.ledger-head p { flex: 1; }
.ledger { max-height: 400px; overflow-y: auto; }
.ledger th { position: sticky; top: 0; background: var(--panel-solid); }
.method summary { cursor: pointer; color: var(--lamp); }
.method li { margin: 12px 0; max-width: 80ch; font-size: 15px; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; margin-top: 26px; font-size: 14px; }
.bench-footer { max-width: 1140px; margin: 0 auto; padding: 0 28px 40px; display: flex; gap: 24px; }
[hidden] { display: none!important; }
.bench { max-width: 960px; padding-top: 42px; }
.bench-intro { padding-bottom: 12px; }
.bench h1 { font: 600 clamp(34px,5vw,52px)/1.08 var(--body); letter-spacing: -.04em; margin: 0 0 18px; }
.bench-intro p { font-size: 18px; line-height: 1.6; color: var(--muted); }
.simple-controls { display: flex; align-items: center; flex-wrap: wrap; gap: 20px; margin: 16px 0; }
.bench .primary { background: var(--lamp); border-color: var(--lamp); color: var(--night); font-weight: 600; min-height: 46px; }
.experiment-label { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--muted); }
.simple-explanation { min-height: 48px; font-size: 15px; color: var(--muted); }
.simple-comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.bench .simple-card { background: var(--panel-solid); border: 1px solid var(--line); border-radius: 12px; padding: 24px; }
.bench .simple-card h2 { font: 500 17px var(--body); margin: 0 0 22px; }
.simple-card p { margin: 4px 0; font-size: 14px; color: var(--muted); }
.simple-card .simple-number { font-size: 42px; font-weight: 600; letter-spacing: -.04em; color: var(--ink); font-variant-numeric: tabular-nums; }
.battery-dots { display: grid; grid-template-columns: repeat(10,1fr); gap: 4px; margin: 22px 0; }
.battery-dots i { display: block; height: 9px; border-radius: 2px; background: var(--good); }
.battery-dots .spent { background: var(--bad); }
.simple-takeaway { font-size: 17px; font-weight: 500; margin: 22px 0 8px; }
.engineer-details { margin-top: 28px; border-top: 1px solid var(--line); padding-top: 20px; }
.engineer-details > summary { cursor: pointer; color: var(--muted); font-size: 14px; }
.engineer-details[open] > summary { margin-bottom: 24px; }
@media(max-width:500px) { .bench { padding: 28px 18px; }.bench h1 { font-size: 36px; }.bench-intro p { font-size: 16px; }.simple-comparison { gap: 10px; }.bench .simple-card { padding: 16px 12px; }.bench .simple-card h2 { font-size: 14px; margin-bottom: 16px; }.simple-card .simple-number { font-size: 30px; }.simple-card p { font-size: 12px; }.battery-dots { gap: 3px; margin: 18px 0; }.battery-dots i { height: 7px; }.simple-controls { gap: 12px; }.experiment-label { font-size: 12px; }.bench .experiment-label select { font-size: 13px; padding: 8px; } }
@media(max-width:800px) { .controls { grid-template-columns: repeat(2,1fr); }.fleet-map { grid-template-columns: repeat(2,1fr); } }
@media(max-width:500px) { .bench { padding: 32px 18px; }.controls { grid-template-columns: 1fr; gap: 16px; }.bench h1 { font-size: 37px; }.fleet-map { grid-template-columns: 1fr; max-height: 300px; }.presets button { flex: 1 1 42%; font-size: 14px; }.bench td,.bench th { padding: 12px 8px; }.plot text { font-size: 17px; } }

/* Base-derived product surfaces: warm canvas, white panels, green action. */
.bench { max-width: 1056px; padding: 64px 32px 32px; }
.bench-intro { max-width: 740px; padding-bottom: 8px; }
.bench h1 { color: var(--brand-foreground); font: 600 48px/1.1 var(--body); letter-spacing: normal; }
.bench-intro p { font-size: 18px; line-height: 1.4; }
.bench button,.bench select,.bench input[type=number] { border-color: var(--line); border-radius: 8px; background: #fff; min-height: 48px; }
.bench .primary { background: var(--brand); color: var(--brand-foreground); border-color: transparent; padding: 12px 24px; font-size: 16px; font-weight: 600; }
.bench .primary:hover { background: #d6f0b4; }
.simple-controls { margin: 24px 0 16px; }
.simple-explanation { min-height: 24px; margin-bottom: 28px; font-size: 16px; }
.simple-comparison { gap: 24px; }
.bench .simple-card { background: #fff; border: 0; border-radius: 16px; padding: 32px; }
.bench .simple-card h2 { color: var(--brand-foreground); font-size: 20px; font-weight: 600; }
.simple-card .simple-number { color: var(--brand-foreground); font-size: 56px; line-height: 1.1; letter-spacing: -.02em; }
.simple-card p { font-size: 16px; }
.battery-dots { gap: 5px; margin: 24px 0; }
.battery-dots i { height: 10px; background: #77a45a; }
.battery-dots .spent { background: #bf5249; }
.simple-takeaway { font-size: 16px; font-weight: 500; }
.simple-card .delivery-number { display: none; }
.verdict { background: #d6f0b4; border-left-color: var(--brand-foreground); }
.bench tr.selected { background: #d6f0b4; }
.bench .good-value { color: var(--brand-foreground); }
.bench .bad-value { color: #c51808; }
.charge { --cell: #048ee5; }.discharge { --cell: #77a45a; }.stale { --cell: #aa8422; }.breach { --cell: #bf5249; }.hold { --cell: #d8d7d5; }
.delivered-key { color: var(--brand-foreground); }.planned-key { color: var(--muted); }
@media(max-width:600px) { .bench { padding: 36px 20px 20px; }.bench h1 { font-size: 36px; }.bench-intro p { font-size: 16px; }.simple-comparison { gap: 12px; }.bench .simple-card { padding: 20px 14px; }.bench .simple-card h2 { font-size: 15px; }.simple-card .simple-number { font-size: 34px; }.simple-card p { font-size: 12px; }.battery-dots { gap: 3px; }.battery-dots i { height: 8px; }.simple-controls { gap: 12px; }.simple-explanation { font-size: 14px; }.bench .experiment-label select { min-height: 44px; } }

.restart-details { border-top: 1px solid var(--line); padding-top: 20px; margin-top: 28px; }
.restart-details > summary { cursor: pointer; font-size: 14px; color: var(--muted); }
.restart-details > summary span { margin-left: 12px; color: var(--brand-foreground); font-variant-numeric: tabular-nums; }
.restart-details[open] > summary { margin-bottom: 20px; }
.restart-details caption { text-align: left; padding: 8px; }