/* Engine lab. Scoped to this page; the data room keeps its existing styles. */
body[data-page="engine-simulator"]{background:#f7f7f3;--sim-ink:#233c49;--sim-muted:#64747c;--sim-line:#dfe3df;--sim-teal:#227a79;--sim-dark:#101e29}
body[data-page="engine-simulator"] .wrap{max-width:1600px;padding:0 40px}
body[data-page="engine-simulator"] .header-inner{max-width:1600px}
body[data-page="engine-simulator"] header{position:relative}
#engine-simulator{padding-bottom:12px}
#engine-simulator button,#engine-simulator select{border-radius:5px}
.sim-intro{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:32px 0 27px}
.sim-eyebrow,.sim-panel-kicker{font:650 10px ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:1.65px;color:#697b7e;margin-bottom:11px}
.sim-intro h1{font-size:38px;letter-spacing:-1.2px;line-height:1.12;margin:0 0 10px;font-weight:650;color:#1e3542}
.sim-intro p{font-size:14px;color:#64747b;margin:0}
.sim-reference-link{font-size:12px;text-decoration:none;white-space:nowrap;color:#52696f}
.sim-reference-link span{padding-left:12px}
.sim-workspace{display:grid;grid-template-columns:minmax(0,1fr) 312px;align-items:stretch;height:910px;border:1px solid #d5ddd9;border-radius:12px;overflow:hidden;background:#fff;box-shadow:0 8px 32px #193e4910}
.sim-visual{background:#101e29;min-width:0;display:flex;flex-direction:column;color:#d8e4e8}
.sim-toolbar{padding:13px 18px;display:flex;align-items:center;justify-content:space-between;gap:10px;border-bottom:1px solid #ffffff10;background:#142430}
.sim-segment{display:flex;gap:3px;border:1px solid #cdd7d4;border-radius:6px;padding:3px}
#engine-simulator .sim-segment button{border:0;background:transparent;min-height:30px;padding:5px 12px;font-size:11px;font-weight:500}
#engine-simulator .sim-toolbar .sim-segment{border-color:#3c505d}
#engine-simulator .sim-toolbar button{color:#aebfc8;background:transparent;border-color:#3c505d;font-size:11px;min-height:32px}
#engine-simulator .sim-toolbar .sim-segment button[aria-pressed=true]{background:#deebe8;color:#18333a}
.sim-view-actions{display:flex;gap:8px}
#engine-simulator #sim-fullscreen{font-size:20px;padding:2px 8px}
.sim-stage{position:relative;min-height:300px;flex:1;overflow:hidden;background:radial-gradient(ellipse at 49% 45%,#263946 0%,#162632 47%,#0e1c27 100%)}
#sim-canvas{width:100%;height:100%;position:absolute;display:block;touch-action:none;outline-offset:-4px!important}
.sim-stage-title{position:absolute;top:23px;left:23px;display:flex;flex-direction:column;pointer-events:none}
.sim-stage-title>span{font:600 9px ui-monospace,monospace;letter-spacing:3.2px;color:#84a0ad;margin-bottom:4px}
.sim-stage-title strong{font-size:15px;letter-spacing:.7px;font-weight:550;color:#cfdbde}
.sim-stage-title small{font:9px ui-monospace,monospace;letter-spacing:1.3px;color:#73909d;margin-top:6px}
.sim-stage-status{position:absolute;top:23px;right:22px;display:flex;flex-direction:column;align-items:end;gap:7px;pointer-events:none}
#sim-status{font-size:10px;color:#c2d9d9;display:flex;gap:6px;align-items:center}
#sim-status:before{content:"";width:5px;height:5px;border-radius:50%;background:#76d6b6;box-shadow:0 0 10px #76d6b640}
#sim-gpu{font:8px ui-monospace,monospace;letter-spacing:1px;color:#6f8f9a}
.sim-stage-bottom{position:absolute;bottom:16px;left:22px;right:22px;display:flex;justify-content:space-between;gap:16px;pointer-events:none;font-size:9px;color:#8da8b4}
#sim-motion-note{color:#dab67f;font:9px ui-monospace,monospace}
.sim-orientation{position:absolute;bottom:43px;right:18px;display:flex;gap:3px}
#engine-simulator .sim-orientation button{font:9px ui-monospace,monospace;min-height:30px;padding:4px 7px;color:#9eb4be;background:#132632a8;border-color:#3c55615c}
#engine-simulator .sim-orientation button:hover{background:#31505d;color:white}
.sim-loading{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;gap:12px;font-size:13px;background:#13232ef5;color:#c0d4db}
.sim-loading>span{width:18px;height:18px;border:2px solid #a8e0d9;border-right-color:transparent;border-radius:50%;animation:sim-spin 1.4s linear infinite}
@keyframes sim-spin{to{transform:rotate(360deg)}}
.sim-fallback{position:absolute;left:12%;right:12%;top:35%;padding:24px;background:#213747ee;border:1px solid #537583;border-radius:8px;color:#e5eeee;font-size:13px}
.sim-fallback p{color:#b9c9d0;margin:10px 0 0}
.sim-instruments{display:grid;grid-template-columns:repeat(4,1fr);border-block:1px solid #314551;background:#132532}
.sim-instruments>div{display:grid;grid-template-columns:auto 1fr;gap:2px 8px;padding:18px 22px;border-right:1px solid #314551}
.sim-instruments>div:last-child{border-right:0}
.sim-instruments span{grid-column:1/-1;font:9px ui-monospace,monospace;color:#88a6b4;letter-spacing:1px}
.sim-instruments strong{font:400 30px ui-monospace,monospace;color:#edf3f3;letter-spacing:-1px;line-height:1.45}
.sim-instruments small{font:10px ui-monospace,monospace;align-self:center;color:#85a0ad;line-height:1.2}
.sim-cylinder-strip{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));padding:12px 18px 9px;gap:6px}
#engine-simulator .sim-cylinder-strip button{background:#172a37;color:#91a9b5;position:relative;border:1px solid #2c4350;display:flex;flex-direction:column;gap:4px;min-height:52px;padding:7px 5px 10px;overflow:hidden}
#engine-simulator .sim-cylinder-strip button>span:first-child{font:600 11px ui-monospace,monospace;color:#d0dce2}
#engine-simulator .sim-cylinder-strip button[aria-pressed=true]{border-color:#b7c7ce;background:#263d4b}
.sim-cylinder-stroke{font-size:9px}
.sim-cylinder-strip i{position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--stroke-color,#5faeaa)}
.sim-cylinder-strip button[data-spark=true]{box-shadow:inset 0 0 18px #fbe3a147}
.sim-playback{display:flex;align-items:center;gap:15px;padding:5px 18px 4px}
#engine-simulator .sim-playback button{background:#243d4c;border-color:#365665;color:#d7e7e9;font-size:11px;min-height:32px;min-width:94px}
.sim-speed-label{display:flex;flex-direction:row;align-items:center;gap:9px;font-size:10px;color:#a1b7c1;font-weight:400}
#engine-simulator .sim-speed-label select{padding:5px 7px;min-height:32px;background:#142936;color:#d3e0e4;border-color:#3d5662;font-size:10px;width:auto}
.sim-cycle-count{margin-left:auto;font:9px ui-monospace,monospace;color:#7593a0;white-space:nowrap}
.sim-cycle-count b{color:#d2e3e6;font-weight:500}
.sim-scrub-label{padding:11px 21px 0;font-size:10px;color:#a2b5bf;font-weight:400}
.sim-scrub-label>span{display:flex;justify-content:space-between;gap:10px}
.sim-scrub-label small{color:#6e8d9b;font-size:9px}
#sim-crank-slider{accent-color:#adc9cd;min-height:23px}
.sim-plant-note{color:#7f9ba8;font-size:10px;margin:3px 21px 17px;line-height:1.6}
.sim-plant-note a{color:#a6c5cd}
.sim-sidebar{padding:22px 23px 18px;background:#fbfcf9;border-left:1px solid #dae0dc;min-height:0;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#c2cec6 transparent}
.sim-control-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.sim-control-heading h2{font-size:13px;margin:0;font-weight:650;color:#233d49}
.sim-control-heading>span{font:9px ui-monospace,monospace;color:#b1bdb9}
.sim-engine-buttons{display:flex;gap:8px;margin:0 0 20px}
#engine-simulator .sim-engine-buttons button{font-size:11px;min-height:35px;flex:1}
#engine-simulator #sim-engine-toggle{background:#1d5757;border-color:#1d5757;color:#fff;flex:2}
#engine-simulator #sim-engine-toggle.sim-stop{background:#e6ece8;color:#38504e;border-color:#c2cfca}
.sim-lever{margin:0 0 15px;gap:2px}
.sim-lever>span,.sim-cut-label>span{display:flex;align-items:center;justify-content:space-between;gap:8px;color:#364f58;font-size:11px}
.sim-lever b{font-weight:600}.sim-lever output{font:10px ui-monospace,monospace;color:#5a7078}
.sim-lever>small{display:flex;justify-content:space-between;font:8px ui-monospace,monospace;letter-spacing:.5px;color:#96a3a2}
#sim-throttle{accent-color:#485c66}#sim-mixture{accent-color:#b55b44}#sim-prop{accent-color:#4e7ea7}
.sim-lever input[type=range]{min-height:23px;margin:0}
.sim-ignition{display:flex;align-items:end;gap:12px}.sim-ignition label{font-size:10px;flex:1}
#engine-simulator .sim-ignition select{font-size:10px;min-height:31px;padding:5px;background:#fff}
#sim-governor-note{font-size:9px;color:#87958f;max-width:100px;padding-bottom:6px;line-height:1.5}
.sim-control-divider{border-top:1px solid #e0e6e1;padding-top:17px;margin-top:18px}
.sim-section-axis{margin:0 0 14px;display:grid;grid-template-columns:repeat(4,1fr);background:#f0f3ee}
#engine-simulator .sim-section-axis button[aria-pressed=true]{background:white;color:#20676a;box-shadow:0 1px 4px #12343620;font-weight:700}
.sim-cut-label{font-size:10px;gap:2px;color:#5c6e72}.sim-cut-label output{font:10px ui-monospace,monospace;color:#597471}
#sim-cut,#sim-explode{accent-color:#347f7d;min-height:25px}
.sim-axis-note{font-size:9px;color:#7e8e8d;margin:1px 0 12px}
.sim-cut-options{display:flex;justify-content:space-between;gap:8px;margin:11px 0}
.sim-check{display:flex;flex-direction:row;align-items:center;gap:3px;color:#627771;font-weight:400;font-size:10px}
.sim-check input[type=checkbox]{width:13px;height:13px;min-height:13px;accent-color:#387e78}
.sim-scope{flex-direction:row;align-items:center;gap:10px;font-size:10px;font-weight:400}
#engine-simulator .sim-scope select{padding:5px;font-size:9px;min-height:30px;background:#fff}
.sim-focus{display:flex;gap:7px;margin-bottom:13px}
#engine-simulator .sim-focus select{font-size:11px;min-height:34px;padding:6px;background:white}
#engine-simulator .sim-focus button{font-size:10px;min-height:34px;background:#edf2ed;border-color:#d0dcd4}
#engine-simulator .sim-parts,#engine-simulator .sim-advanced{border:0;background:none;padding:0;margin:10px 0;font-size:11px}
#engine-simulator .sim-parts summary,#engine-simulator .sim-advanced summary{font-size:10px;font-weight:500;color:#57736d}
.sim-part-row{display:flex;flex-direction:row;align-items:center;justify-content:space-between;gap:9px;font-size:10px;font-weight:400;padding:4px 0;border-bottom:1px solid #e1e8e1}
#engine-simulator .sim-part-row select{width:98px;font-size:9px;min-height:30px;padding:5px}
#engine-simulator #sim-restore-parts{margin-top:8px;font-size:10px;min-height:30px;width:100%}
.sim-advanced label{font-size:10px;margin-top:10px}
#engine-simulator .sim-advanced select{font-size:10px;min-height:33px}
.sim-advanced p{font-size:10px;margin:10px 0;color:#79877f}
.sim-sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.sim-detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:26px}
.sim-cycle-panel,.sim-systems-panel{min-width:0;background:#fff;border:1px solid var(--sim-line);padding:25px 27px;border-radius:9px}
.sim-panel-kicker{font-size:9px;margin-bottom:12px;letter-spacing:1.3px}
.sim-detail-heading{display:flex;align-items:center;justify-content:space-between;gap:15px}
.sim-detail-heading h2,.sim-systems-panel h2{font-size:20px;letter-spacing:-.3px;margin:0 0 13px}
#sim-selected-stroke{font-size:10px;padding:4px 9px;border-radius:4px;background:#f5eee3;color:#875638;margin-bottom:12px}
.sim-cycle-panel>p,.sim-systems-panel>p{font-size:12px;color:#6c7b80;line-height:1.7;margin-bottom:19px}
#sim-selected-description{min-height:40px}
.sim-cycle-track{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:4px;margin:6px 0 22px;padding-top:4px}
.sim-cycle-track>div{font:9px ui-monospace,monospace;color:#6e7e84;display:flex;flex-direction:column;gap:9px}
.sim-cycle-track i{height:7px;background:#f38b55;border-radius:2px}
.sim-cycle-track>div:nth-child(2) i{background:#c2a1e8}.sim-cycle-track>div:nth-child(3) i{background:#68d6ce}.sim-cycle-track>div:nth-child(4) i{background:#e7c96e}
#sim-cycle-cursor{position:absolute;left:0;top:0;height:15px;border-left:2px solid #1c3744}
.sim-detail-numbers{display:grid;grid-template-columns:1fr 1fr;gap:16px 20px;margin:10px 0 22px}
.sim-detail-numbers>div{display:flex;flex-direction:column;gap:4px}.sim-detail-numbers span{font:8px ui-monospace,monospace;letter-spacing:.7px;color:#7e8a8a}
.sim-detail-numbers b{font:500 12px ui-monospace,monospace;color:#365460}
.sim-firing{display:flex;gap:14px;align-items:center;border-top:1px solid #e4e9e5;padding-top:15px}
.sim-firing>span{font:8px ui-monospace,monospace;letter-spacing:.7px;color:#6c7f86;max-width:45px}
.sim-firing>div{display:flex;gap:6px}.sim-firing [data-fire]{border:1px solid #d9e3de;background:#f3f5f1;border-radius:50%;width:24px;height:24px;display:grid;place-items:center;font:10px ui-monospace,monospace}
.sim-firing [data-fire][data-active=true]{background:#c37949;color:white;border-color:#c37949}
.sim-firing small{font-size:9px;margin-left:auto;color:#86948e}
.sim-cycle-panel>p.sim-detail-note{font-size:10px;margin:14px 0 0;color:#879691}
.sim-system-map{width:100%;height:auto;display:block;margin:12px 0 5px}
.sim-map-boxes rect{fill:#f8faf7;stroke:#cbdad2;stroke-width:1.2}.sim-map-lines path{fill:none;stroke-width:2}
.sim-map-text text{text-anchor:middle;font:11px system-ui;fill:#47626a}.sim-map-text .sim-map-small{font:8px ui-monospace,monospace;fill:#78918c}.sim-map-text .sim-fuel-text{font:8px ui-monospace,monospace;fill:#927236;text-anchor:start}
.sim-air-line{stroke:#369a92;marker-end:url(#sim-air-arrow)}.sim-exhaust-line{stroke:#c16f46;marker-end:url(#sim-exhaust-arrow)}.sim-shaft-line{stroke:#80958d;stroke-dasharray:4 4}.sim-fuel-line{stroke:#c5a64e}
.sim-system-readouts{display:flex;justify-content:space-between;gap:8px;border-top:1px solid #e6ece4;padding:14px 0}
.sim-system-readouts span{display:flex;flex-direction:column;gap:4px;font-size:9px;color:#82938a}.sim-system-readouts b{font:11px ui-monospace,monospace;color:#43625d}
.sim-systems-panel>p:last-child{font-size:10px;margin:0;color:#819187}
.sim-methods{display:grid;grid-template-columns:1fr 1fr;gap:55px;padding:36px 0;border-bottom:1px solid #dce3da;margin:0!important}
.sim-methods h2{font-size:21px;max-width:360px;line-height:1.35;letter-spacing:-.25px}.sim-methods h3{font-size:13px;padding-top:5px}
.sim-methods p{font-size:12px;color:#6e7c7d;line-height:1.8;max-width:570px}.sim-methods p:last-child{margin:0}
.sim-references{padding:30px 0 0}.sim-references h2{font-size:22px;letter-spacing:-.3px;margin-bottom:10px}.sim-references>p{font-size:12px;color:#6b7c7c}
.sim-source-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px}
.sim-source-grid a{display:flex;flex-direction:column;gap:9px;padding:18px;background:#fff;border:1px solid #dce4d9;border-radius:6px;color:#2c5153;text-decoration:none}
.sim-source-grid a:hover{border-color:#80a299}.sim-source-grid span{font:8px ui-monospace,monospace;letter-spacing:1px;color:#86958b}.sim-source-grid strong{font-size:12px;font-weight:600}.sim-source-grid small{font-size:10px;line-height:1.7;color:#839085}
.sim-workspace:fullscreen{overflow:auto;width:100vw;height:100dvh;border-radius:0;grid-template-columns:minmax(0,1fr) 312px}.sim-workspace:fullscreen .sim-stage{min-height:380px}
#engine-simulator .sim-noscript{padding:20px;background:#fff1d5}
@media(max-width:1200px){body[data-page="engine-simulator"] .wrap{padding:0 24px}.sim-workspace{grid-template-columns:minmax(0,1fr) 280px}.sim-sidebar{padding:19px 18px}.sim-instruments>div{padding:15px}.sim-instruments strong{font-size:25px}.sim-instruments small{font-size:8px}.sim-stage{min-height:490px}.sim-firing{gap:9px}.sim-firing small{font-size:8px}.sim-detail-grid{gap:18px}.sim-cycle-panel,.sim-systems-panel{padding:23px}.sim-instruments>div{column-gap:5px}}
@media(max-width:950px){.sim-workspace{grid-template-columns:minmax(0,1fr) 260px}.sim-sidebar{padding:18px 14px}.sim-instruments>div{padding:13px 10px}.sim-instruments strong{font-size:21px}.sim-instruments span{font-size:7px;letter-spacing:.6px}.sim-instruments small{font-size:7px}.sim-toolbar{padding:11px 12px}.sim-view-actions{gap:4px}#engine-simulator .sim-toolbar button{padding:5px 7px}.sim-speed-label{gap:5px}.sim-playback{gap:9px;padding-inline:12px}.sim-cycle-count{font-size:8px}.sim-stage-title{top:18px;left:17px}.sim-stage-status{right:15px;top:18px}.sim-gestures{display:none}.sim-cylinder-strip{padding-inline:12px}.sim-cylinder-stroke{font-size:8px}.sim-detail-grid{grid-template-columns:1fr}.sim-source-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){body[data-page="engine-simulator"] .wrap{padding:0 14px}.sim-intro{padding:25px 2px 21px;gap:10px;align-items:start}.sim-intro h1{font-size:30px}.sim-eyebrow{font-size:8px;letter-spacing:1.5px}.sim-intro p{font-size:11px;max-width:280px;line-height:1.6}.sim-reference-link{font-size:0;margin-top:19px}.sim-reference-link span{font-size:21px;padding:0}.sim-workspace{display:flex;flex-direction:column;border-radius:8px;height:auto}.sim-visual{display:block}.sim-stage{height:440px;min-height:0}.sim-toolbar{padding:10px 11px}#engine-simulator .sim-toolbar .sim-segment button{font-size:10px;padding:6px 9px}.sim-stage-title{top:18px;left:16px}.sim-stage-title strong{font-size:12px}.sim-stage-title>span{font-size:8px}.sim-stage-title small{font-size:7px;letter-spacing:1px}.sim-stage-status{top:17px;right:14px}#sim-status{font-size:9px}.sim-stage-bottom{left:16px;right:16px;bottom:12px}.sim-orientation{right:12px;bottom:35px}.sim-instruments>div{padding:13px 10px;display:flex;flex-wrap:wrap;gap:2px 5px}.sim-instruments span{width:100%;font-size:6px;letter-spacing:.5px}.sim-instruments strong{font-size:22px}.sim-instruments small{font-size:7px;align-self:center}.sim-cylinder-strip{gap:4px;padding:11px 11px 7px}#engine-simulator .sim-cylinder-strip button{min-height:48px;padding:7px 2px 9px}.sim-cylinder-stroke{font-size:7px}.sim-playback{flex-wrap:wrap;padding:6px 12px 0;gap:8px}#engine-simulator .sim-playback button{min-width:81px;font-size:10px}.sim-speed-label{font-size:9px}#engine-simulator .sim-speed-label select{font-size:9px;padding:5px}.sim-cycle-count{margin-left:auto;font-size:7px}.sim-scrub-label{padding:12px 14px 0}.sim-scrub-label small{font-size:8px}.sim-plant-note{margin:4px 14px 15px;font-size:9px}.sim-sidebar{padding:22px 20px;border-left:0;border-top:1px solid #dbe3db;overflow:visible}.sim-control-heading h2{font-size:14px}.sim-engine-buttons{margin-bottom:22px}#engine-simulator .sim-engine-buttons button{min-height:40px;font-size:12px}.sim-lever{margin-bottom:20px}.sim-lever>span{font-size:12px}.sim-lever output{font-size:11px}.sim-lever input[type=range]{min-height:32px}.sim-lever>small{font-size:9px}.sim-cut-label{font-size:12px}.sim-cut-label>span{font-size:12px}#sim-cut,#sim-explode{min-height:36px}.sim-cut-options{margin:14px 0}.sim-check{font-size:12px}.sim-check input[type=checkbox]{width:16px;height:16px;min-height:16px}.sim-axis-note{font-size:10px}.sim-control-divider{padding-top:22px;margin-top:24px}#engine-simulator .sim-section-axis button{min-height:36px;font-size:12px}#engine-simulator .sim-scope select{min-height:37px;font-size:11px}#engine-simulator .sim-focus select,#engine-simulator .sim-focus button{min-height:38px;font-size:12px}#engine-simulator .sim-parts summary,#engine-simulator .sim-advanced summary{font-size:12px;padding:5px 0}.sim-part-row{font-size:11px}#engine-simulator .sim-part-row select{font-size:11px;min-height:36px;width:110px}.sim-detail-grid{margin-top:18px;gap:16px}.sim-cycle-panel,.sim-systems-panel{padding:21px 18px}.sim-detail-heading h2,.sim-systems-panel h2{font-size:19px}.sim-cycle-panel>p{font-size:11px}.sim-detail-numbers{gap:18px 12px}.sim-detail-numbers b{font-size:10px}.sim-detail-numbers span{font-size:7px}.sim-firing{gap:12px}.sim-firing>div{gap:5px}.sim-firing small{font-size:8px;max-width:60px}.sim-methods{grid-template-columns:1fr;gap:24px;padding:29px 5px}.sim-methods h2{font-size:21px}.sim-methods p{font-size:12px}.sim-source-grid{grid-template-columns:1fr}.sim-references{padding:26px 4px 0}.sim-references h2{font-size:21px}.sim-source-grid a{padding:20px}.sim-source-grid small{font-size:11px}.sim-workspace:fullscreen{display:block}.sim-workspace:fullscreen .sim-stage{height:60dvh;min-height:300px}}
@media(prefers-reduced-motion:reduce){.sim-loading>span{animation:none}}