:root{color-scheme:dark;--bg:#101617;--panel:#171e20;--line:#303a3c;--text:#f3f0e9;--muted:#a3b0b0;--amber:#ffc178;--mint:#73dfcd;--coral:#ed755d;font-family:Inter,"Segoe UI",sans-serif;font-synthesis:none}
*{box-sizing:border-box}
html,body{margin:0;width:100%;height:100%;background:var(--bg);color:var(--text)}
body{display:flex;flex-direction:column;overflow:hidden}
button,a,input,summary{-webkit-tap-highlight-color:transparent}
button{font:inherit;color:inherit;cursor:pointer;border:1px solid var(--line);background:transparent;transition:background .18s,border-color .18s,color .18s}
button:hover{background:#ffffff0d;border-color:#6e8382}
button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,canvas:focus-visible{outline:2px solid var(--mint);outline-offset:4px}
button:disabled{opacity:.4;cursor:default}
button.active{background:var(--amber);border-color:var(--amber);color:#202320}
[hidden]{display:none!important}
svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.masthead{height:82px;flex-shrink:0;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 26px;gap:20px;background:#111819}
.identity{display:flex;align-items:center;gap:13px;text-decoration:none;color:var(--text);font-size:12px;letter-spacing:1.5px;font-weight:700;white-space:nowrap}
.identity-mark{font-family:Georgia,serif;font-style:italic;font-size:45px;line-height:1;letter-spacing:-7px;padding-right:8px}
.identity-mark span{color:var(--coral)}
.identity small{display:block;font-size:8px;letter-spacing:1.6px;color:var(--muted);font-weight:500;margin-top:7px}
.module-tabs{display:flex;gap:6px;padding:5px;border:1px solid var(--line);border-radius:12px;background:#0e1415}
.module-tab{display:flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:8px;font-size:13px;padding:11px 17px;font-weight:650;min-height:44px;text-decoration:none;color:inherit;white-space:nowrap}
.module-tab span{font-size:10px;opacity:.55;margin-right:8px}
.module-tab small{font-size:8px;font-weight:500;color:var(--muted);margin-left:7px}
.module-tab.active{background:#2e3838;border-color:#485452;color:var(--text)}
.module-tab.hub-tab{border-color:#73dfcd55;color:var(--mint);background:#73dfcd0d}
.module-tab.hub-tab:hover{border-color:var(--mint);background:#73dfcd1b}
.header-tools{display:flex;align-items:center;gap:8px}
.round-button{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;color:#bfcbca}
.round-button[aria-pressed="true"]{color:var(--amber);border-color:var(--amber)}
.reset-button{height:44px;border:none;padding:0 8px;color:#b8c3c2;font-size:18px;white-space:nowrap}
.reset-button span{font-size:11px;margin-left:5px}
.laboratory{display:grid;grid-template-columns:296px minmax(0,1fr);min-height:0;flex:1}
.control-panel{background:linear-gradient(150deg,#1b2325,#151c1e);border-right:1px solid var(--line);padding:25px 22px 22px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#4e605f transparent}
.eyebrow{font-size:9px;font-weight:650;letter-spacing:1.8px;color:var(--muted);line-height:1.5}
.panel-intro h1{font-size:25px;font-weight:580;letter-spacing:-.7px;margin:9px 0 8px}
.panel-intro p{font-size:12px;color:var(--muted);line-height:1.6;margin:0 0 25px;max-width:235px}
.section-label{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px;margin:0 0 12px}
.section-label h2{font-size:12px;font-weight:600;margin:0}
.small-badge{font-size:10px;color:var(--amber);background:#ffc17812;padding:5px 8px;border-radius:4px;white-space:nowrap}
.subtle{font-size:10px;color:var(--muted)}
.gear-selector{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}
.gear-selector button{height:47px;border-radius:7px;font-size:20px;font-weight:550;background:#111819}
.gear-selector button.active{background:var(--amber)}
.gear-selector button:nth-last-child(-n+2){grid-column:span 2;font-size:16px;height:47px}
.gear-selector small{font-size:10px;font-weight:400;margin-left:5px;opacity:.7}
.mobile-gear-dock{display:none}
.mobile-hydraulic-dock{display:none}
.auto-clutch-option{display:flex;align-items:center;gap:10px;min-height:52px;margin-top:9px;cursor:pointer;font-size:12px;font-weight:600;color:var(--mint)}
.auto-clutch-option input{width:21px;height:21px;margin:0;flex-shrink:0;accent-color:var(--mint);cursor:pointer}
.auto-clutch-option small{display:block;font-size:10px;font-weight:400;color:var(--muted);margin-top:4px}
.clutch-button{width:100%;display:flex;gap:13px;text-align:left;align-items:center;border-radius:8px;margin-top:13px;padding:11px 14px;min-height:61px;background:#263233;border-color:#496363;font-size:13px;font-weight:600}
.auto-clutch-option+.clutch-button{margin-top:0}
.clutch-button[aria-pressed="true"]{background:#73dfcd20;border-color:var(--mint);color:var(--mint)}
.clutch-button.needs-clutch{border-color:var(--coral);box-shadow:0 0 0 2px #ed755d40}
.clutch-button small{display:block;font-weight:400;color:var(--muted);font-size:9px;margin-top:5px}
.pedal-icon{font-size:27px;color:var(--mint)}
.control-message{font-size:10px;line-height:1.6;color:var(--muted);margin:10px 0 0;min-height:32px}
.control-message.warning{color:#ffa790}
#clutch-warn{font-size:11px;padding:9px 10px;background:#0e1618;border-left:2px solid #527773;border-radius:0 5px 5px 0;min-height:54px}
#clutch-warn.warning{border-left-color:var(--coral);background:#ed755d12}
.shift-detail-button{min-height:44px;width:100%;border-radius:7px;margin-top:10px;color:var(--mint);font-size:12px}
.shift-sequence{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:10px;font-size:10px;color:var(--muted)}
.shift-sequence>span{border:1px solid var(--line);border-radius:4px;padding:8px}
.shift-sequence>span.active{color:var(--amber);border-color:var(--amber);background:#ffc17818}
.control-section{border-top:1px solid var(--line);padding-top:17px;margin-top:17px}
.segmented{display:flex;gap:6px}
.segmented button{flex:1;border-radius:7px;font-size:12px;min-height:49px}
.segmented small{display:block;font-size:9px;opacity:.65;margin-top:4px}
.segmented button.active{background:#ffc17816;color:var(--amber);border-color:#ffc17880}
.compact button{min-height:40px}
output{color:var(--amber);font-variant-numeric:tabular-nums;font-size:11px;white-space:nowrap}
input[type="range"]{display:block;width:100%;height:30px;margin:0;appearance:none;background:transparent;cursor:pointer;touch-action:pan-y}
input[type="range"]::-webkit-slider-runnable-track{height:3px;background:linear-gradient(to right,var(--amber) var(--fill,40%),#425052 var(--fill,40%));border-radius:2px}
input[type="range"]::-moz-range-track{height:3px;background:#425052}
input[type="range"]::-moz-range-progress{background:var(--amber);height:3px}
input[type="range"]::-webkit-slider-thumb{appearance:none;height:18px;width:18px;background:var(--amber);border:3px solid #343a34;border-radius:50%;margin-top:-7.5px;box-shadow:0 0 0 3px #ffc17814}
input[type="range"]::-moz-range-thumb{height:15px;width:15px;background:var(--amber);border:3px solid #343a34;border-radius:50%}
.range-extents{display:flex;justify-content:space-between;font-size:9px;color:#849594}
.extra-controls{border-top:1px solid var(--line);margin-top:17px;font-size:11px}
.extra-controls summary{min-height:47px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;color:#bdc9c7;list-style:none}
.extra-controls summary::-webkit-details-marker{display:none}
.extra-controls[open] summary{color:var(--amber)}
.extra-controls .section-label{margin-top:13px}
.fine-print,.pto-readout{color:var(--muted);font-size:10px;line-height:1.7}
.tour-button{width:100%;display:flex;align-items:center;justify-content:space-between;gap:10px;border:1px solid #52777366;border-radius:8px;text-align:left;margin-top:17px;padding:14px 10px;font-size:11px;color:var(--mint);background:linear-gradient(100deg,#73dfcd10,transparent)}
.tour-button>span:first-child{font-size:24px}
.tour-button small{display:block;font-size:9px;margin-top:5px;font-weight:400;color:var(--muted)}
.tour-button[aria-pressed="true"]{border-color:var(--mint)}
.hydraulic-detail-button{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;min-height:74px;border:1px solid #73dfcd80;border-radius:9px;background:linear-gradient(120deg,#73dfcd22,#111e21);color:var(--mint);text-align:left;padding:12px;font-size:12px;margin-bottom:20px}
.hydraulic-detail-button>span:first-child{font-size:24px}
.hydraulic-detail-button small{display:block;font-size:10px;color:var(--muted);margin-top:6px;line-height:1.4}
.hydraulic-detail-button[aria-pressed="true"]{border-color:var(--amber);color:var(--amber)}
.hydraulic-detail-tools{padding:0 0 18px;margin-bottom:18px;border-bottom:1px solid var(--line)}
.hydraulic-detail-tools>button{width:100%;min-height:45px;font-size:12px;color:var(--amber);border-radius:7px;margin-bottom:18px;background:#ffc17812}
.hydraulic-detail-tools>button[aria-pressed="true"]{border-color:var(--amber)}
.hydraulic-detail-tools p{font-size:11px;line-height:1.65;color:var(--muted);margin-bottom:0}
.stroke-track{height:5px;background:#354446;border-radius:5px;overflow:hidden}.stroke-track>span{display:block;width:100%;height:100%;background:var(--mint)}
.hydraulic-cutaway .scene-legend .input-dot{background:#ffbf59}.hydraulic-cutaway .scene-legend .output-dot{background:#65bcff}
.experience{display:grid;grid-template-rows:minmax(0,1fr) auto;min-width:0;min-height:0}
.stage{position:relative;isolation:isolate;overflow:hidden;background:radial-gradient(ellipse at 50% 60%,#2c3938,#11191b 75%);min-height:270px}
#webgl-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none;outline-offset:-3px}
.scene-heading{position:absolute;left:30px;top:25px;pointer-events:none}
.scene-heading .eyebrow{color:#8ea6a4}
.scene-heading h2{font-size:clamp(22px,2.4vw,38px);line-height:1.15;font-weight:450;letter-spacing:-1px;margin:10px 0 15px}
.live-status{display:flex;align-items:center;gap:7px;color:#b7cac5;font-size:10px}
.live-status>i{width:5px;height:5px;border-radius:100%;background:var(--mint);box-shadow:0 0 10px #73dfcd88}
.time-scale{border-left:1px solid #ffffff26;padding-left:10px;margin-left:3px;color:#92a5a2;font-size:9px}
.scene-metrics{position:absolute;right:27px;top:26px;display:flex;gap:24px;text-align:right;pointer-events:none}
.scene-metrics>div>span{font-size:9px;color:var(--muted);display:block;margin-bottom:9px}
.scene-metrics strong{font-family:"Segoe UI",sans-serif;font-weight:400;letter-spacing:-.8px;display:block;font-size:25px;white-space:nowrap;color:var(--mint);font-variant-numeric:tabular-nums}
.scene-metrics small{font-size:10px;letter-spacing:0;margin-left:4px;color:var(--muted)}
.scene-metrics>div:last-child strong{color:var(--amber)}
.scene-legend{position:absolute;bottom:79px;left:28px;display:flex;gap:17px;pointer-events:none}
.scene-legend>span{display:flex;align-items:center;gap:6px;color:#a5b7b3;font-size:9px}
.scene-legend i{height:5px;width:5px;border-radius:50%}
.input-dot{background:var(--amber)}.output-dot{background:var(--mint)}.active-dot{background:#ef9d57}
.view-toolbar{position:absolute;bottom:20px;left:26px;right:26px;display:flex;justify-content:space-between;gap:12px;pointer-events:none}
.camera-buttons,.playback-buttons{display:flex;gap:3px;border:1px solid #52615f69;border-radius:9px;padding:4px;background:#162022e8;box-shadow:0 5px 20px #0002;pointer-events:auto}
.mobile-view-menu{display:none}
.view-toolbar button{border-color:transparent;border-radius:5px;height:35px;min-width:39px;padding:0 12px;font-size:10px;color:#b6c4c1}
.view-toolbar button.active{background:#46514c80;color:var(--text);border-color:#59655b80}
.playback-buttons button{padding:0 10px;font-size:13px}
.learning-panel{display:grid;grid-template-columns:1.2fr 1fr;gap:30px;padding:21px 28px;background:#1b2324;border-top:1px solid var(--line);min-height:148px}
.learning-panel h2{font-size:18px;letter-spacing:-.25px;font-weight:500;margin:6px 0 8px}
.learning-panel p{font-size:11px;line-height:1.65;color:#b0bfbc;margin:0}
.lesson-copy .eyebrow{font-size:8px;color:var(--amber)}
.lesson-experiment{padding-left:24px;border-left:1px solid var(--line);display:flex;flex-direction:column;justify-content:center}
.lesson-experiment>p{font-size:10px}
.flow-strip{display:flex;align-items:center;gap:9px;margin-bottom:12px;flex-wrap:wrap}
.flow-strip span{font-size:10px;border:1px solid #3c4a47;border-radius:4px;padding:7px 9px;white-space:nowrap;color:#d0dbd6}
.flow-strip span:first-child{border-color:#786444;color:var(--amber)}
.flow-strip span:last-child{border-color:#3c746d;color:var(--mint)}
.flow-strip b{font-weight:400;font-size:13px;color:#87978f}
.tour-navigation{display:flex;gap:10px;align-items:center;margin-top:11px}
.tour-navigation button{min-height:36px;border-radius:5px;padding:5px 9px;font-size:11px}
.tour-navigation span{font-size:10px;color:var(--amber)}
#tour-next{margin-left:auto;color:var(--mint)}
.part-labels{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.part-label{position:absolute;left:0;top:0;pointer-events:auto;display:flex;align-items:center;gap:7px;min-height:34px;border:0;padding:6px 10px 6px 6px;background:#121d20d9;border-radius:5px;font-size:10px;white-space:nowrap;box-shadow:0 2px 10px #0002;transform:translate(-50%,-50%)}
.part-label i{display:grid;place-items:center;border:1px solid #7ea399;border-radius:50%;color:var(--mint);font-style:normal;font-size:9px;width:19px;height:19px;flex-shrink:0}
.part-label:hover{background:#283e3d;color:#fff}
.part-card{position:absolute;right:26px;bottom:76px;max-width:315px;padding:20px 24px;background:#1c2c2ef5;border:1px solid #6fa69880;box-shadow:0 16px 50px #0005;border-radius:10px;z-index:10}
.part-card h3{font-size:19px;font-weight:500;margin:8px 0}
.part-card p{font-size:12px;color:#c0cfcb;line-height:1.7;margin:0}
#info-close,.dialog-close{float:right;border:none;width:32px;height:32px;font-size:23px;color:#aebfba;margin:-10px -13px 0 5px}
.hitch-actions{display:flex;flex-direction:column;gap:8px}
.hitch-actions button{display:flex;align-items:center;gap:16px;min-height:55px;text-align:left;font-size:23px;padding:8px 15px;border-radius:7px}
.hitch-actions button>span{font-size:12px}
.hitch-actions small{display:block;font-size:9px;opacity:.65;margin-top:4px}
.hitch-actions button.active{background:#ffc17814;border-color:#ffc1788c;color:var(--amber)}
.secondary-actions{display:flex;gap:7px;margin-top:23px}
.secondary-actions button{min-height:46px;font-size:10px;flex:1;border-radius:7px}
.footer{height:39px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;padding:0 25px;gap:20px;border-top:1px solid var(--line);color:#8b9b98;background:#111819;font-size:9px}
.mouse-symbol{color:var(--amber);font-size:17px;margin-right:7px}
.footer>span{display:flex;align-items:center;gap:6px}
.footer button{border:0;font-size:16px;width:30px;min-height:30px}
dialog{color:var(--text);background:#1a2729;border:1px solid #526864;border-radius:15px;padding:33px;max-width:570px;width:calc(100% - 32px);max-height:85dvh;overflow:auto}
dialog::backdrop{background:#061011cc;backdrop-filter:blur(8px)}
dialog h2{font-weight:450;font-size:28px;letter-spacing:-.6px;line-height:1.2}
dialog p{font-size:13px;line-height:1.8;color:#b5c4bf}
dialog a{color:var(--mint)}
.scene-error{position:absolute;inset:10%;display:grid;align-content:center;justify-items:center;text-align:center;padding:20px;background:#152123f5;z-index:30;border:1px solid #eea481;border-radius:12px}
.scene-error p{color:var(--muted);font-size:13px;line-height:1.7}
.scene-error button{border-radius:7px;padding:12px}
@media(min-width:1650px){.laboratory{grid-template-columns:335px minmax(0,1fr)}.control-panel{padding:32px}.panel-intro h1{font-size:29px}.scene-heading{top:33px;left:40px}.scene-metrics{top:36px;right:40px;gap:38px}.scene-metrics strong{font-size:33px}.learning-panel{padding:27px 40px;min-height:175px}.learning-panel h2{font-size:23px}.learning-panel p{font-size:13px}.view-toolbar{left:40px;right:40px;bottom:27px}.scene-legend{left:40px;bottom:88px}.gear-selector button{height:55px}.control-section{margin-top:22px;padding-top:20px}}
@media(max-width:1300px){.scene-metrics{top:116px;right:24px;gap:19px}.scene-metrics strong{font-size:23px}.scene-metrics>div>span{font-size:8px}.scene-heading h2{font-size:28px}.scene-metrics>div:last-child{display:none}.learning-panel{gap:20px}.scene-legend{gap:11px}.masthead{padding:0 20px;gap:10px}.identity{font-size:10px}.identity small{font-size:7px}.module-tab{padding:10px 11px;font-size:12px}.module-tab small{display:none}}
@media(max-width:1050px){.laboratory{grid-template-columns:265px minmax(0,1fr)}.control-panel{padding:22px 16px}.identity small{display:none}.header-tools .reset-button span{display:none}.module-tab span{display:none}.learning-panel{grid-template-columns:1fr;padding:17px 22px;gap:13px}.lesson-experiment{border:0;padding:0}.flow-strip{display:none}.learning-panel h2{font-size:17px}.scene-heading{left:22px;top:22px}.scene-heading h2{font-size:25px}.scene-metrics{top:116px;right:22px}.view-toolbar{left:16px;right:16px;gap:6px}.view-toolbar button{padding:0 8px;font-size:9px}.playback-buttons button{min-width:30px;padding:0 7px}.scene-legend{left:20px;gap:10px}.scene-legend>span{font-size:8px}.footer>span:first-child{max-width:60%}.part-label{font-size:9px}.panel-intro h1{font-size:24px}}
@media(max-height:750px) and (min-width:761px){.masthead{height:70px}.control-panel{padding-top:19px}.panel-intro p{margin-bottom:19px}.learning-panel{padding-top:16px;padding-bottom:16px;min-height:137px}.control-section{margin-top:13px;padding-top:13px}.scene-heading{top:20px}.scene-metrics{top:102px}.footer{height:32px}}
@media(max-width:760px){body{height:auto;min-height:100%;overflow:auto}.masthead{height:auto;min-height:110px;display:grid;grid-template-columns:1fr auto;gap:11px 10px;padding:12px 16px}.identity{font-size:10px}.identity-mark{font-size:34px}.header-tools{gap:3px}.round-button{width:37px;height:37px}.reset-button{height:37px}.module-tabs{grid-column:1/-1;grid-row:2;width:100%;padding:3px;display:grid;grid-template-columns:repeat(3,1fr)}.module-tab{font-size:11px;min-height:42px;padding:8px 5px;white-space:normal;line-height:1.2}.module-tab.hub-tab{grid-column:1/-1;font-size:12px}.module-tab.hub-tab small{display:inline;font-size:9px}.module-tab span{display:inline;margin-right:5px}.laboratory{display:flex;flex-direction:column;flex:auto;min-height:auto}.experience{order:0;display:block}.control-panel{order:1;overflow:visible;border-right:0;border-top:1px solid var(--line);padding:23px;display:block}.stage{height:470px;min-height:360px}.scene-heading{left:20px;top:20px}.scene-heading h2{font-size:27px}.scene-metrics{top:115px;right:19px;gap:18px}.scene-metrics strong{font-size:22px}.scene-legend{left:20px;bottom:117px;right:20px;gap:12px;flex-wrap:wrap}.view-toolbar{bottom:15px;left:15px;right:15px;flex-direction:column;align-items:center;gap:7px}.camera-buttons{width:100%}.camera-buttons button{flex:1;font-size:10px;height:32px}.playback-buttons{padding:2px}.playback-buttons button{min-width:51px;height:28px}.learning-panel{padding:22px 20px;display:block}.learning-panel h2{font-size:19px;line-height:1.3}.learning-panel p{font-size:12px}.lesson-experiment{margin-top:13px}.lesson-experiment>p{font-size:11px;color:var(--amber)}.flow-strip{display:flex;margin:15px 0 10px}.part-label{font-size:8px;padding:4px 6px;min-height:30px;gap:4px}.part-label i{height:16px;width:16px;font-size:8px}.part-card{left:15px;right:15px;bottom:112px;max-width:none;padding:20px}.footer{height:auto;flex-direction:column;align-items:flex-start;gap:8px;padding:15px 20px;font-size:9px}.footer>span:first-child{max-width:100%;line-height:1.6}.panel-intro p{max-width:none}.gear-selector button{height:53px}.section-label,.section-label h2{font-size:13px}.clutch-button{min-height:65px}.control-message{font-size:11px}.tour-button{font-size:13px;min-height:65px}.tour-button small{font-size:10px}.extra-controls summary{min-height:50px;font-size:12px}.segmented button{min-height:52px}.hitch-actions button{min-height:64px}}
.view-toolbar button{height:44px;font-size:11px}
.scene-legend{bottom:88px}
.stage::before{content:"";position:absolute;left:0;right:0;top:0;height:155px;background:linear-gradient(#10191de8,#10191d80 52%,transparent);pointer-events:none;z-index:1}
.scene-heading,.scene-metrics,.part-labels,.scene-legend{z-index:2}
.view-toolbar{z-index:3}
@media(max-height:620px) and (min-width:761px){body{height:auto;min-height:100%;overflow:auto}.laboratory{height:610px;flex:none}.stage{min-height:350px}}
@media(min-width:1650px){.section-label,.section-label h2{font-size:14px}.clutch-button{font-size:14px}.tour-button{font-size:13px}.tour-button small{font-size:10px}.view-toolbar button{font-size:12px}.part-label{font-size:12px;min-height:39px}.scene-legend>span{font-size:11px}.scene-legend{bottom:98px}}
@media(max-width:760px){
  body.gearbox-active{padding-bottom:calc(76px + env(safe-area-inset-bottom,0px))}
  .mobile-gear-dock{position:fixed;left:8px;right:8px;bottom:max(8px,env(safe-area-inset-bottom,8px));z-index:900;display:grid;grid-template-columns:minmax(0,1fr) 105px;gap:6px;padding:8px;border:1px solid #647a78;border-radius:12px;background:#10191df2;box-shadow:0 10px 34px #000b;backdrop-filter:blur(12px)}
  .mobile-gear-buttons{min-width:0;display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:4px}
  .mobile-gear-buttons button,.mobile-clutch{min-width:0;height:48px;border-radius:7px;background:#202b2d;border-color:#465759;font-size:18px;font-weight:700}
  .mobile-gear-buttons button.active{background:var(--amber);border-color:var(--amber);color:#202320}
  .mobile-clutch{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;color:var(--mint);font-size:12px;line-height:1.1}
  .mobile-clutch small{font-size:8px;font-weight:500;color:var(--muted)}
  .mobile-clutch.active{background:#73dfcd24;border-color:var(--mint);color:var(--mint)}
  .mobile-clutch.needs-clutch{border-color:var(--coral);box-shadow:inset 0 0 0 1px var(--coral)}
  .mobile-hydraulic-dock{position:relative;z-index:4;display:grid;gap:5px;margin:10px;padding:7px;border:1px solid #647a78;border-radius:11px;background:#10191d;box-shadow:0 9px 26px #0009}
  .mobile-hydraulic-primary,.mobile-hitch-buttons{display:grid;gap:5px}
  .mobile-hydraulic-primary{grid-template-columns:1fr 1fr}
  .mobile-hitch-buttons{grid-template-columns:repeat(4,minmax(0,1fr))}
  .mobile-hydraulic-dock button{min-width:0;min-height:44px;border-radius:7px;background:#202b2d;border-color:#465759;color:#d8e3e0;font-size:11px;font-weight:700}
  .mobile-hydraulic-primary button{color:var(--mint)}
  .mobile-hitch-buttons button{display:flex;align-items:center;justify-content:center;gap:4px;font-size:17px}
  .mobile-hitch-buttons button span{font-size:9px}
  .mobile-hydraulic-dock button.active,.mobile-hydraulic-dock button[aria-pressed="true"]{background:#ffc17824;border-color:var(--amber);color:var(--amber)}
  body.hydraulic-active .stage{height:400px;min-height:400px}
  .stage{height:510px}
  .view-toolbar{flex-direction:row;justify-content:center;align-items:center}
  .camera-buttons{display:none}
  .mobile-view-menu{position:relative;display:block;pointer-events:auto}
  .mobile-view-menu summary{display:flex;align-items:center;justify-content:center;gap:6px;height:48px;min-width:82px;padding:0 12px;border:1px solid #52615f69;border-radius:9px;background:#162022f5;color:#b6c4c1;font-size:11px;cursor:pointer;list-style:none}
  .mobile-view-menu summary::-webkit-details-marker{display:none}
  .mobile-view-menu[open] summary{border-color:var(--mint);color:var(--mint)}
  .mobile-view-options{position:absolute;right:0;bottom:calc(100% + 8px);z-index:8;display:grid;width:172px;gap:4px;padding:6px;border:1px solid #647a78;border-radius:10px;background:#10191df7;box-shadow:0 9px 26px #000b}
  .mobile-view-options button{width:100%;height:44px;text-align:left}
  .playback-buttons{height:48px}
  .view-toolbar button{height:40px;min-width:40px}
  .scene-legend{bottom:78px}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* QUIZ MODAL & CONTROLS */
.module-tab.quiz-tab-btn{border-color:#ffc17866;color:var(--amber);background:#ffc17812}
.module-tab.quiz-tab-btn:hover{background:#ffc17822;border-color:var(--amber)}
.quiz-button{border-color:#ffc17866!important;color:var(--amber)!important;background:linear-gradient(100deg,#ffc17818,transparent)!important}
.quiz-button:hover{background:linear-gradient(100deg,#ffc17828,transparent)!important;border-color:var(--amber)!important}

#quiz-dialog{max-width:680px;width:calc(100% - 32px);background:#152123f8;border:1px solid #4a6764;border-radius:18px;padding:26px 28px;box-shadow:0 25px 70px #0009;backdrop-filter:blur(10px);overflow-y:auto;max-height:88vh}
#quiz-dialog::backdrop{background:#061011d9;backdrop-filter:blur(10px)}
.quiz-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:18px;padding-bottom:14px;border-bottom:1px solid var(--line)}
.quiz-header h2{font-size:22px;font-weight:550;letter-spacing:-.5px;margin:5px 0 0;color:var(--text)}
.quiz-progress-bar{height:6px;background:#243335;border-radius:3px;overflow:hidden;margin-bottom:14px}
.quiz-progress-fill{height:100%;background:linear-gradient(to right,var(--mint),var(--amber));transition:width .3s ease}
.quiz-step-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;font-size:11px}
.quiz-badge{font-size:9px;font-weight:700;letter-spacing:1px;color:var(--amber);background:#ffc17816;border:1px solid #ffc17840;padding:4px 9px;border-radius:4px}
.quiz-counter{color:var(--muted);font-size:11px;font-variant-numeric:tabular-nums}
.quiz-question-title{font-size:18px;font-weight:550;line-height:1.4;margin:0 0 18px;color:var(--text)}
.quiz-options{display:flex;flex-direction:column;gap:10px;margin-bottom:16px}
.quiz-option-btn{display:flex;align-items:center;gap:14px;min-height:56px;padding:12px 16px;background:#1b2628;border:1px solid #364b4e;border-radius:9px;text-align:left;color:var(--text);font-size:13px;line-height:1.45;transition:all .18s;width:100%}
.quiz-option-btn:hover:not(:disabled){background:#243437;border-color:var(--mint);transform:translateY(-1px)}
.quiz-option-btn:focus-visible{outline:2px solid var(--mint)}
.quiz-opt-letter{width:28px;height:28px;border-radius:50%;background:#293b3e;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px;color:var(--amber);flex-shrink:0}
.quiz-opt-text{flex:1}
.quiz-option-btn.correct{background:#73dfcd22!important;border-color:var(--mint)!important;color:#fff!important}
.quiz-option-btn.correct .quiz-opt-letter{background:var(--mint)!important;color:#101617!important}
.quiz-option-btn.incorrect{background:#ed755d22!important;border-color:var(--coral)!important;color:#ffa790!important;opacity:.8}
.quiz-option-btn.incorrect .quiz-opt-letter{background:var(--coral)!important;color:#fff!important}
.quiz-feedback{margin-top:16px;padding:16px 18px;background:#182628;border-radius:10px;border:1px solid #364b4e;animation:fadeIn .25s ease forwards}
.quiz-feedback-banner{font-size:13px;font-weight:600;margin-bottom:8px;display:flex;align-items:center;gap:6px}
.quiz-feedback-banner.correct{color:var(--mint)}
.quiz-feedback-banner.incorrect{color:var(--coral)}
.quiz-feedback-text{font-size:12px;line-height:1.65;color:#c0cfcb;margin:0 0 16px}
.quiz-feedback-actions{display:flex;justify-content:flex-end}
.quiz-action-next{background:var(--mint);color:#101617;font-weight:700;border:none;border-radius:8px;padding:12px 22px;font-size:13px;cursor:pointer;transition:transform .15s,background .15s}
.quiz-action-next:hover{background:#8cf2e1;transform:translateY(-1px)}
.quiz-results{text-align:center;padding:10px 0}
.quiz-results-score-badge{display:inline-flex;flex-direction:column;align-items:center;background:#ffc17818;border:1px solid #ffc17848;border-radius:12px;padding:14px 28px;margin-bottom:18px}
.quiz-score-num{font-size:38px;font-weight:700;color:var(--amber);line-height:1}
.quiz-score-pct{font-size:11px;font-weight:600;letter-spacing:1px;color:var(--muted);margin-top:6px}
.quiz-rank-title{font-size:22px;font-weight:600;margin:0 0 8px;color:var(--text)}
.quiz-rank-desc{font-size:13px;color:#c0cfcb;max-width:480px;margin:0 auto 24px;line-height:1.6}
.quiz-results-card{background:linear-gradient(135deg,#ffc17812,#73dfcd0a);border:1px solid #ffc17840;border-radius:12px;padding:20px;margin-bottom:24px;text-align:center}
.quiz-results-card-title{font-size:15px;font-weight:650;color:var(--amber);margin-bottom:8px}
.quiz-results-card-desc{font-size:12px;color:var(--muted);margin:0 0 14px;line-height:1.6}
.quiz-diplom-form{display:flex;flex-direction:column;align-items:center;gap:9px;max-width:440px;margin:0 auto}
.quiz-diplom-label{width:100%;font-size:11px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;text-align:left;color:#d9e2df}
.quiz-diplom-input{width:100%;min-height:44px;padding:10px 13px;border:1px solid #61716e;border-radius:7px;background:#0d1718;color:#fff;font:600 14px/1.2 inherit;outline:none}
.quiz-diplom-input:focus{border-color:var(--amber);box-shadow:0 0 0 3px #ffc17826}
.quiz-diplom-input::placeholder{color:#82908d}
.quiz-diplom-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--amber);color:#1b1b16;font-weight:700;padding:12px 22px;border:0;border-radius:8px;text-decoration:none;font-size:13px;cursor:pointer;transition:background .18s,transform .18s}
.quiz-diplom-btn:hover{background:#ffd099;transform:translateY(-2px)}
.quiz-results-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.quiz-btn-outline{min-height:44px;padding:0 20px;border-radius:7px;border:1px solid #526864;background:transparent;color:var(--text);font-size:12px;font-weight:600}
.quiz-btn-outline:hover{background:#ffffff10;border-color:var(--muted)}
.quiz-btn-primary{min-height:44px;padding:0 20px;border-radius:7px;border:none;background:var(--mint);color:#101617;font-size:12px;font-weight:700}
.quiz-btn-primary:hover{background:#8cf2e1}