:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;color:#13343b;background:#f4f8f7}*{box-sizing:border-box}body{margin:0}.topbar{height:70px;background:#063b46;color:white;display:flex;align-items:center;gap:22px;padding:0 max(24px,calc((100vw - 1280px)/2))}.brand{font-size:22px;font-weight:800;color:white;text-decoration:none;letter-spacing:-1px}.brand-mark span{color:#b2ed58}.pilot-pill{font-size:11px;letter-spacing:.08em;font-weight:800;background:#155c65;border-radius:99px;padding:8px 11px}.back{margin-left:auto;color:#d1e9e7;text-decoration:none;font-size:13px}main{max-width:1280px;margin:auto;padding:32px 24px 80px}.intro{margin:8px 0 28px}.eyebrow{font-size:11px;font-weight:850;letter-spacing:.15em;color:#478074}.intro h1{font-size:clamp(30px,4vw,50px);line-height:1.08;letter-spacing:-.045em;max-width:800px;margin:10px 0}.intro p{color:#60757a;max-width:740px;line-height:1.6}.card,.player-card{background:white;border:1px solid #dce8e5;box-shadow:0 10px 28px #11424d0a;border-radius:18px}.login-card,.join-card{padding:28px;max-width:650px;display:grid;gap:22px}.login-card h2,.join-card h2{margin:8px 0;font-size:26px;letter-spacing:-.03em}.login-card p,.join-card p{line-height:1.55;color:#657a7f;margin-bottom:0}.login-card form{display:grid;gap:14px}.login-card label{font-size:13px;font-weight:700;display:grid;gap:7px}.login-card input,.questions input{border:1px solid #c9dad7;border-radius:10px;padding:12px 14px;font:inherit;outline:none}.login-card input:focus,.questions input:focus{border-color:#079b89;box-shadow:0 0 0 3px #10b99d22}button{cursor:pointer;font:inherit;font-weight:700;border-radius:10px;padding:11px 15px;border:1px solid transparent}button:disabled{opacity:.5;cursor:not-allowed}.primary{background:#0d776c;color:white}.primary:hover{background:#096256}.secondary{background:#f1f7f5;color:#174650;border-color:#d6e5e2}.secondary:hover{background:#e6f1ee}.demo-login,.join-actions,.control-buttons,.call-buttons{display:flex;gap:9px;flex-wrap:wrap}.demo-login button{background:transparent;border-color:#ccdfda;color:#237265}.checkbox{display:flex;align-items:center;gap:7px;color:#425f65;font-weight:600}.join-actions{align-items:center;justify-content:space-between}.room-bar{display:flex;justify-content:space-between;align-items:center;gap:16px;background:#e5f5ed;border:1px solid #c9e8d4;border-radius:13px;padding:12px 17px;margin-bottom:16px}.room-bar>div{display:flex;align-items:center;gap:11px;flex-wrap:wrap}.room-bar span:last-child{font-size:12px;color:#59736a}.live-dot{width:9px;height:9px;border-radius:50%;background:#35bf66;box-shadow:0 0 0 4px #35bf6633}.layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:17px}.main-column,.side-column{display:grid;gap:17px;align-content:start}.player-card{overflow:hidden}.player-heading{padding:22px 24px 16px}.player-heading h2{font-size:22px;margin:6px 0}.player-heading p{margin:0;color:#6b8084;font-size:13px}.video-wrap{position:relative;background:#071a20;aspect-ratio:16/9}.video-wrap video{width:100%;height:100%;object-fit:contain;background:#071a20}.video-badge{position:absolute;top:14px;left:14px;color:white;background:#092d38cc;padding:8px 12px;border-radius:8px;font-size:12px;font-weight:700}.unlock{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#b2ed58;color:#183c30;white-space:nowrap}.player-footer{padding:14px 22px;display:flex;justify-content:space-between;color:#60767b;font-size:13px}.player-footer span:first-child{font-variant-numeric:tabular-nums;font-weight:800;color:#17434a}.controls,.questions,.people,.call{padding:22px}.controls h3,.questions h3,.side-head h3{margin:5px 0 8px}.controls p,.call-hint{font-size:13px;color:#6a7e82;line-height:1.5}.questions form{display:flex;gap:9px}.questions input{flex:1;min-width:0}.questions-list{display:grid;gap:9px;margin-top:15px;max-height:250px;overflow:auto}.question-item{background:#f4f8f7;border:1px solid #e2eeeb;padding:11px 13px;border-radius:10px;font-size:13px}.question-item strong{color:#0a7068}.question-item p{margin:5px 0 0;line-height:1.4}.empty{font-size:13px;color:#8a999c;margin:0}.people-list{display:grid;gap:9px}.person{display:flex;justify-content:space-between;gap:6px;padding:8px 0;border-bottom:1px solid #e9f0ee;font-size:13px}.person small{color:#758c8e}.person em{font-style:normal;color:#cf7137}.self-tile,.remote-tile{position:relative;background:#0b2c34;border-radius:10px;overflow:hidden;min-height:120px}.self-tile video,.remote-tile video{display:block;width:100%;height:160px;object-fit:cover}.self-tile span,.remote-tile span{position:absolute;bottom:7px;left:8px;background:#062b36c9;color:white;border-radius:6px;padding:4px 7px;font-size:11px}.remote-tiles{display:grid;gap:8px;margin-top:8px}.call-buttons{margin-top:12px}.call-buttons button{font-size:12px;padding:9px}.call-hint{margin-bottom:0}.notice{font-size:13px;color:#b35829;min-height:20px;margin:13px 2px}[hidden]{display:none!important}@media(max-width:850px){.layout{grid-template-columns:1fr}.side-column{grid-template-columns:1fr 1fr}.intro h1{font-size:34px}}@media(max-width:600px){main{padding:20px 14px 60px}.topbar{height:auto;min-height:64px;padding:10px 14px;gap:9px;flex-wrap:wrap}.brand{font-size:19px}.pilot-pill{font-size:9px}.back{font-size:11px}.intro h1{font-size:30px}.side-column{grid-template-columns:1fr}.room-bar{align-items:flex-start}.room-bar>div{align-items:flex-start}.questions form{flex-direction:column}.video-wrap{aspect-ratio:4/3}.player-heading,.controls,.questions,.people,.call{padding:17px}.control-buttons button{flex:1}}
.lesson-cues{margin-top:16px;border-top:1px solid #e0ece8;padding-top:14px;color:#31565e;font-size:13px;line-height:1.5}.lesson-cues summary{cursor:pointer;font-weight:750;color:#0d776c}.lesson-cues ol{padding-left:20px}.lesson-cues li{margin:7px 0}.lesson-cues a{color:#0d776c}
.video-badge{left:50%;transform:translateX(-50%)}
.player-title-row{display:flex;justify-content:space-between;align-items:flex-start;gap:18px}.player-title-row>div{min-width:0}.lecture-language{display:grid;gap:6px;flex:none;font-size:11px;font-weight:800;color:#426c68}.lecture-language select{min-width:160px;border:1px solid #c9dad7;border-radius:9px;background:#f7fbf9;color:#174650;padding:9px 10px;font:inherit;font-size:13px}.lecture-language select:focus{outline:2px solid #10b99d}.player-heading .player-title-row p{max-width:520px}
.course-context{display:inline-flex;align-items:center;margin-top:14px;padding:7px 11px;border-radius:8px;background:#eaf5ef;color:#0e655d;font-size:12px;font-weight:800}
.program-card{padding:23px}.program-head{display:flex;justify-content:space-between;gap:15px;align-items:flex-start}.program-head h3{margin:5px 0 6px;font-size:22px}.program-head p{margin:0;color:#6a7e82;font-size:13px;line-height:1.5;max-width:560px}.program-duration{flex:none;background:#eaf5ef;color:#0e655d;border-radius:99px;padding:8px 11px;font-size:12px;font-weight:800}.program-sections{display:grid;gap:13px;margin-top:19px}.program-section{border:1px solid #dceae5;border-radius:14px;overflow:hidden;background:#fbfdfc}.program-section-head{padding:14px 17px 12px;background:#f0f7f3}.program-section-head h4{font-size:16px;margin:0 0 3px;color:#123e45}.program-section-head p{font-size:12px;line-height:1.4;color:#6d8380;margin:0}.lesson-list{list-style:none;margin:0;padding:0}.lesson-item{display:flex;align-items:center;gap:9px;border-top:1px solid #e8f0ed;padding:5px 12px 5px 7px}.lesson-item.is-current{background:#f0faeb;box-shadow:inset 4px 0 #a8dd57}.lesson-open{display:grid;gap:3px;min-width:0;flex:1;text-align:left;border:0;background:transparent;color:#183b42;padding:9px 10px;font-weight:650}.lesson-open:hover{color:#08796c;background:#e9f5f0}.lesson-open strong{font-size:13px}.lesson-open small{font-size:11px;font-weight:500;color:#708680}.lesson-seek{white-space:nowrap;background:#e9f4f1;color:#0b6b62;border-color:#d2e5de;font-size:11px;padding:7px 9px}.lesson-seek:hover{background:#d8eee7}
.review-dialog{border:0;border-radius:18px;padding:0;width:min(850px,calc(100vw - 32px));max-height:calc(100vh - 32px);box-shadow:0 28px 80px #031b26aa;color:#13343b}.review-dialog::backdrop{background:#041d27c9}.review-head{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;padding:18px 22px 14px}.review-head h2{margin:5px 0;font-size:22px}.review-head p{margin:0;font-size:12px;color:#708680}.review-head button{padding:6px 10px}.review-dialog video{display:block;width:100%;aspect-ratio:16/9;background:#061b25}.review-dialog>p{font-size:12px;line-height:1.4;color:#6c7f83;margin:13px 22px}.review-actions{display:flex;justify-content:space-between;padding:0 22px 19px;gap:10px}
@media(max-width:600px){.player-title-row{flex-direction:column}.lecture-language select{min-width:220px}.program-card{padding:17px}.program-head{display:block}.program-duration{display:inline-block;margin-top:12px}.lesson-item{align-items:flex-start}.lesson-seek{margin-top:8px}.review-head{padding:14px}.review-dialog>p{margin:11px 14px}.review-actions{padding:0 14px 14px}}
.section-quiz{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 17px;background:#fff9e9;border-top:1px solid #f0e1bc}.section-quiz>div{display:grid;gap:3px}.section-quiz strong{font-size:13px;color:#6c5215}.section-quiz small{font-size:12px;color:#8c7547}.quiz-open{flex:none;background:#f8e7b2;color:#60470d;border-color:#efd389;font-size:12px;padding:8px 11px}.quiz-open:hover{background:#f3dc97}.quiz-open:disabled{background:#f5f0e2;color:#9c9075;border-color:#ece5d7}.lesson-open:disabled{opacity:.48;cursor:not-allowed}.gate-overlay{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:24px;background:#061f29e8;color:white;z-index:3}.gate-overlay strong{font-size:24px}.gate-overlay p{max-width:460px;line-height:1.5;color:#d5e7e3}.gate-overlay button{margin-top:5px;background:#b9e96b;color:#113b37}.gate-overlay[hidden]{display:none}.quiz-dialog{border:0;border-radius:18px;padding:0;width:min(740px,calc(100vw - 28px));max-height:calc(100vh - 28px);overflow:auto;box-shadow:0 28px 80px #031b26aa;color:#13343b}.quiz-dialog::backdrop{background:#041d27c9}.quiz-dialog .review-head{border-bottom:1px solid #e1ece8}.quiz-dialog .review-head p{font-size:13px;line-height:1.4}.quiz-question{border:1px solid #dfebe6;border-radius:12px;margin:14px 20px;padding:14px}.quiz-question legend{font-size:14px;font-weight:800;color:#123f44;padding:0 5px}.quiz-question label{display:flex;align-items:flex-start;gap:9px;padding:8px 10px;border-radius:8px;font-size:13px;line-height:1.4;cursor:pointer}.quiz-question label:hover{background:#eff7f3}.quiz-question input{margin-top:2px;accent-color:#0d776c}.quiz-result{min-height:22px;margin:8px 22px;font-size:14px;font-weight:750;color:#0b6f61}.quiz-dialog .review-actions{justify-content:flex-start}
@media(max-width:600px){.section-quiz{align-items:flex-start;flex-direction:column}.quiz-question{margin:12px;padding:10px}.quiz-dialog .review-head{padding:14px}}

/* Shared Draiver visual language for the simulator's third learning mode. */
:root{color:#173b43;background:#f4f7f5}
body{background:#f4f7f5;color:#173b43;-webkit-font-smoothing:antialiased}
.topbar{height:76px;background:#fbfcfa;color:#173b43;border-bottom:1px solid #e2e9e6;padding:0 max(24px,calc((100vw - 1360px)/2));gap:18px}
.topbar .brand{display:flex;align-items:center;flex:none}
.topbar .brand img{width:150px;max-height:45px;object-fit:contain}
.header-separator{width:1px;height:28px;background:#dce6e2}
.header-context{font-size:12px;color:#809295;white-space:nowrap}
.header-context b{padding:0 8px;color:#b7c6c5}
.header-context strong{color:#17434c}
.pilot-pill{margin-left:auto;background:#eaf4ec;color:#276256;font-size:10px;white-space:nowrap}
.back{margin-left:0;color:#0e5663;font-size:12px;font-weight:800;white-space:nowrap}
.back:hover{text-decoration:underline}
main{max-width:1360px;padding:30px 24px 80px}
.intro{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:30px;align-items:center;min-height:300px;padding:33px 37px;margin:0 0 22px;border:1px solid #1c6570;border-radius:21px;background:radial-gradient(circle at 67% 115%,#126779 0,transparent 42%),linear-gradient(115deg,#073540,#0a4955);box-shadow:0 17px 38px #0c3c4522;overflow:hidden}
.intro .eyebrow{color:#a7db00}
.intro h1{max-width:760px;margin:15px 0 16px;color:#fff;font-size:clamp(28px,3.2vw,48px);letter-spacing:-.045em;line-height:1.12}
.intro h1 em{font-style:normal;color:#a7db00}
.intro p{max-width:700px;color:#d1e4e5;margin:0 0 15px;font-size:14px;line-height:1.55}
.intro-note{display:inline-block;color:#a9c8ca;font-size:11px;line-height:1.45}
.intro-path{display:grid;gap:8px;padding:16px;border:1px solid #6a999e66;border-radius:15px;background:#062f39a8;color:#fff}
.path-label{color:#a7db00;font-size:10px;font-weight:900;letter-spacing:.13em;margin-bottom:3px}
.intro-path>div{display:flex;gap:12px;align-items:center;padding:8px 9px;background:#ffffff12;border:1px solid #ffffff15;border-radius:9px}
.intro-path b{display:grid;place-items:center;width:30px;height:30px;flex:none;border-radius:7px;background:#ff6b20;color:#fff;font-size:11px}
.intro-path strong,.intro-path small{display:block}
.intro-path strong{font-size:12px}.intro-path small{color:#b6d2d1;font-size:10px;margin-top:2px}
.path-foot{font-size:10px;color:#bcd2d1;margin-top:2px}
.card,.player-card{border-color:#e0e9e5;box-shadow:0 10px 30px #0c3b4310}
.eyebrow{color:#e86627}
.primary{background:#ff6b20}.primary:hover{background:#e75d18}
.secondary{background:#f1f6f4;border-color:#dbe9e4;color:#15545e}
.secondary:hover{background:#e6f1ed}
.pilot-pill,.program-duration,.course-context{background:#e9f5e6;color:#27614b}
.lesson-item.is-current{background:#f2f9e9;box-shadow:inset 4px 0 #a7db00}
.quiz-open{background:#fff0d8;border-color:#f4d6a8;color:#a34c12}
.quiz-open:hover{background:#ffe4bc}
.gate-overlay button{background:#a7db00;color:#173b41}
.room-bar{background:#ebf6ec;border-color:#d7ead8}
@media(max-width:850px){.intro{grid-template-columns:1fr;gap:19px;padding:25px}.intro-path{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.path-label,.path-foot{grid-column:1/-1}.intro-path>div{min-width:0;gap:7px;padding:7px}.intro-path b{width:25px;height:25px}}
@media(max-width:600px){.topbar{height:auto;min-height:64px;padding:9px 14px;gap:7px 11px}.topbar .brand img{width:120px}.header-separator,.header-context{display:none}.pilot-pill{margin-left:auto;font-size:8px;padding:7px 8px}.back{width:100%;font-size:11px}main{padding:15px 13px 60px}.intro{padding:22px 18px;margin-bottom:16px;border-radius:16px}.intro h1{font-size:29px}.intro p{font-size:12px}.intro-path{display:grid;grid-template-columns:1fr}.path-label,.path-foot{grid-column:auto}.intro-path>div{gap:9px}}