:root{font-family:Arial,Helvetica,sans-serif;color:#15324a;background:#fff;font-synthesis:none;--navy:#0c2943;--blue:#1760a3;--line:#dce5ec}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,select,input:not([type=range]),textarea{border:1px solid #c9d5df;border-radius:6px;padding:10px;background:#fff;color:inherit}button{cursor:pointer;font-weight:600;min-height:42px}button:hover{background:#eaf2f8}button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #f4bd49;outline-offset:2px}button:disabled{opacity:.5;cursor:not-allowed}.topbar{padding:8px 22px;display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;text-decoration:none;color:var(--navy);font-weight:750;letter-spacing:1.4px;font-size:18px}.brand img{width:70px;height:70px;object-fit:contain}.brand small{display:block;font-size:9px;letter-spacing:2px;margin-top:5px;color:#687b8e}.session{display:flex;gap:8px;align-items:center;font-size:12px}.session strong{font-variant-numeric:tabular-nums;font-size:24px;margin:0 9px}.session>span{max-width:170px}.session #pause{background:var(--navy);color:white}.tabs{display:flex;padding:0 22px;border-bottom:1px solid var(--line);gap:8px;background:white;position:sticky;top:0;z-index:5}.tabs button{border:none;border-radius:0;padding:16px 20px;color:#8091a1;background:white;font-size:12px;white-space:nowrap}.tabs span{font-size:14px;margin-left:10px;color:#526779}.tabs .active{border-bottom:3px solid #e13035}.tabs .active span{color:var(--navy)}.statusbar{display:flex;flex-wrap:wrap;gap:20px;background:#edf3f7;padding:10px 24px;font:12px monospace}.dev{margin-left:auto;color:#778593}main{padding:18px 22px}.tab{display:none}.tab.active{display:block}.radar-layout{display:grid;grid-template-columns:minmax(0,1fr) 242px;gap:14px}.helm-panel{border:1px solid var(--line);padding:14px;border-radius:8px;background:#f7f9fb;display:flex;flex-direction:column;gap:10px}.helm-panel h2{font-size:11px;letter-spacing:1.6px;margin:2px 0}.instrument{font:12px/1.8 monospace;padding:12px;background:var(--navy);color:#d6f2ff;border-radius:5px}.helm-panel label{font-size:11px}.helm-panel p{margin:0;font-size:12px;line-height:1.5}.helm-panel button{font-size:11px;padding:8px}.helm-panel select{width:100%}label{display:flex;flex-direction:column;gap:7px;font-size:12px;color:#536c80}input[type=range]{width:100%;accent-color:#2564a0}h1{font-size:32px;color:#112c43;letter-spacing:-.7px}h2{font-size:19px}.row{display:flex;gap:7px;flex-wrap:wrap}.small{font-size:11px;color:#738495;line-height:1.6}.eyebrow{font-size:11px;letter-spacing:2px;color:#a27628;font-weight:700}.r4-radar{background:#10192e;color:#d7e5f3;border-radius:9px;overflow:hidden}.r4-radar-top{padding:10px 15px;display:flex;justify-content:space-between;font:12px monospace;background:#19253b}.r4-radar-main{display:grid;grid-template-columns:minmax(300px,1fr) 215px}.r4-radar-scope{min-height:600px;position:relative}.r4-radar-scope canvas{width:100%;height:100%;display:block;position:absolute;inset:0;touch-action:none}.r4-radar-controls{padding:10px;background:#1e2a41;font-size:10px}.r4-radar-controls label{color:#aebdd1;font-size:9px;margin-bottom:4px}.r4-radar-controls select,.r4-radar-controls input{background:#111d32;color:#e3ecf4;border:1px solid #48536a;padding:6px;font-size:10px;min-width:0;width:100%}.r4-radar-knobs{display:grid;grid-template-columns:repeat(3,1fr);gap:9px 7px;margin:14px 0}.r4-knob-label{text-align:center;color:#b2c5d9;font-size:8px}.r4-knob{width:38px;height:38px;position:relative;background:radial-gradient(circle at 30% 20%,#50617a,#172137 74%);border:2px solid #6c7d95;border-radius:50%;margin:5px auto;touch-action:none;cursor:ns-resize;box-shadow:0 2px 5px #0008}.r4-knob:after{content:'';position:absolute;width:2px;height:12px;left:16px;top:3px;background:#f7d16b;transform-origin:50% 14px;transform:rotate(var(--angle,0deg))}.r4-radar-keys{display:grid;grid-template-columns:1fr 1fr;gap:5px}.r4-radar button{background:#293650;color:#c5d6e9;border:1px solid #52617a;font-size:9px;border-radius:4px;padding:7px;min-height:34px}.r4-radar button[aria-pressed=true]{color:#141d2e;background:#edce78}.r4-radar-settings{display:grid;grid-template-columns:1fr 1fr;gap:6px;margin-top:12px}.r4-radar-tip{font-size:9px;line-height:1.5;color:#93a6bf}.r4-radar-bottom{padding:10px 14px;font:11px/1.6 monospace;background:#162238;min-height:70px}.danger{color:#ff8c8c;font-weight:bold}.advanced{border:1px solid var(--line);margin-top:14px;padding:16px;border-radius:8px}.advanced summary{font-size:13px;font-weight:700;cursor:pointer}.control-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:12px;margin:14px 0}.control-grid input,.control-grid select{width:100%;min-width:0}.control-grid label{font-size:10px}#toolStatus{font-size:12px;line-height:1.5}.viewtools{display:flex;align-items:end;gap:15px;margin-bottom:12px;flex-wrap:wrap}.scene-wrap{position:relative;background:#b4ccdf;height:calc(100vh - 285px);min-height:400px;border-radius:8px;overflow:hidden}#scene{width:100%;height:100%;display:block}#sceneInfo{position:absolute;bottom:15px;left:15px;background:#0c263bbd;color:white;padding:10px 16px;border-radius:4px;font:12px monospace}.training-layout{display:grid;grid-template-columns:300px 1fr;gap:32px;max-width:1300px;margin:auto}.training-layout aside{border-right:1px solid var(--line);padding-right:20px}.training-layout h1{margin-top:8px}.training-layout p{font-size:14px;line-height:1.7}.training-layout article{padding:12px 25px}.lesson-link{display:block;border:0;border-bottom:1px solid var(--line);width:100%;text-align:left;font-size:12px;font-weight:400;border-radius:0}.lesson-link.selected{background:#eaf2f8;border-left:3px solid #ba862d;font-weight:700}.task{background:#f0f5f8;border-left:3px solid #bf913e;padding:18px;line-height:1.6}.training-layout li{line-height:1.8;font-size:14px;margin:8px 0}.setup-row{display:grid;grid-template-columns:2fr 1fr 1fr;gap:20px;margin:25px 0}.scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.scenario-card{border:1px solid var(--line);padding:24px;border-radius:10px;background:linear-gradient(140deg,#f7fafc,white);position:relative;overflow:hidden}.scenario-card:before{content:attr(data-num);position:absolute;right:17px;top:10px;font-size:62px;font-weight:700;color:#dae5ed80}.scenario-card h2{position:relative;max-width:85%;font-size:20px}.scenario-card p{font-size:13px;line-height:1.7;color:#63788c;min-height:62px}.scenario-card button{background:#153b5b;color:white;border:0;margin-top:12px}.scenario-card .meta{font-size:11px;color:#946a24;letter-spacing:1px}.intro{max-width:720px}.intro p{line-height:1.6;color:#62768a}#toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#102c43;color:white;border-radius:8px;padding:14px 22px;max-width:90%;display:none;z-index:50;font-size:13px}dialog{border:1px solid var(--line);border-radius:12px;width:min(820px,95vw);max-height:90vh;overflow:auto;padding:28px}dialog::backdrop{background:#08223bb3}dialog textarea{width:100%;margin-bottom:14px}#reviewBody{font-size:13px;line-height:1.7}.collision{background:#c72434!important;color:white!important;animation:alertPulse 1.4s ease-in-out infinite}@keyframes alertPulse{50%{opacity:.45}}@media(prefers-reduced-motion:reduce){.collision{animation:none;outline:3px solid #ff8994}}@media(min-width:2000px){.r4-radar-scope{min-height:calc(100vh - 470px)}.r4-radar-main{grid-template-columns:1fr 280px}.radar-layout{grid-template-columns:1fr 310px}.r4-radar button,.r4-radar-controls select{font-size:13px}.r4-radar-tip{font-size:12px}}@media(max-width:1000px){.radar-layout{grid-template-columns:1fr}.helm-panel{display:grid;grid-template-columns:repeat(3,1fr)}.helm-panel h2{grid-column:1/-1}.control-grid{grid-template-columns:repeat(4,1fr)}.session>span,.dev{display:none}.training-layout{grid-template-columns:230px 1fr}.scenario-grid{grid-template-columns:1fr 1fr}}@media(max-width:600px){.topbar{padding:5px 10px;flex-wrap:wrap;gap:4px}.brand img{width:48px;height:48px}.brand{font-size:15px}.session{width:100%;justify-content:space-between}.session button{font-size:10px;padding:7px}.session strong{font-size:19px}.tabs{padding:0 3px;gap:0;overflow:auto}.tabs button{padding:13px 7px;font-size:10px}.tabs span{font-size:11px;margin-left:3px}.statusbar{padding:8px 10px;gap:10px;font-size:10px}main{padding:10px}.r4-radar-main{grid-template-columns:1fr}.r4-radar-scope{min-height:360px}.r4-radar-controls{display:grid;grid-template-columns:1fr 1fr;gap:8px}.r4-radar-knobs,.r4-radar-keys{grid-column:1/-1;grid-template-columns:repeat(6,1fr);margin:0}.r4-radar-keys{grid-template-columns:repeat(4,1fr)}.r4-radar-settings{grid-column:1/-1;grid-template-columns:repeat(3,1fr)}.r4-radar-tip{grid-column:1/-1;margin:0}.helm-panel{grid-template-columns:1fr 1fr}.control-grid{grid-template-columns:1fr 1fr}.training-layout{display:block}.training-layout aside{border:0;padding:0}.training-layout article{padding:10px 0}.training-layout #lessonList{max-height:190px;overflow:auto;border:1px solid var(--line)}.scenario-grid,.setup-row{grid-template-columns:1fr}.scene-wrap{min-height:400px}.viewtools{gap:8px}.viewtools label{max-width:48%}.scenario-card p{min-height:0}h1{font-size:27px}}
#scene canvas{width:100%;height:100%;display:block}.r4-knob:after{transform:rotate(var(--knob,0deg))}.r4-radar button.active{color:#172131;background:#eed18c}.quiz{padding:12px;border:1px solid #d4dfe8;margin:12px 0}.quiz label{margin:10px 0;display:flex;flex-direction:row;align-items:center}.check-good{color:#17613f}.check-wait{color:#976516}

/* D3: own-ship loading and recovery; status is separate from the rendered scene. */
.ship-render-mount{height:100%;width:100%;touch-action:none}.ship-message{position:absolute;inset:0;display:grid;place-items:center;padding:24px;background:#eef4f9;overflow:auto}.ship-message[hidden]{display:none}.ship-message>div{width:min(620px,100%)}.ship-message h2{font-size:26px}.ship-message p{font-size:14px;line-height:1.7}.ship-message pre{white-space:pre-wrap;overflow-wrap:anywhere;font:12px/1.5 monospace;padding:12px;background:#fff;border:1px solid #cad9e5;color:#904032}.scene-health{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px;font-size:12px;color:#526b7e}.scene-health button{font-size:12px}.brand{flex-direction:column;text-align:center;gap:0;padding-bottom:6px}.brand img{width:54px;height:44px}.brand small{font-size:8px;margin-top:3px}@media(max-width:600px){.scene-health{align-items:flex-start;flex-direction:column}.brand img{width:44px;height:36px}.ship-message{padding:16px}.ship-message h2{font-size:22px}}
#academyReview{margin:18px 0;border-top:1px solid #cad8e3;padding-top:12px;font-size:13px;line-height:1.65}#academyReview .row{margin:12px 0}.academy-selectors{display:grid;grid-template-columns:2fr 1fr;gap:14px}.academy-selectors select{width:100%;min-width:0}#academyExplanation{max-height:320px;overflow:auto;padding:10px;background:#f0f5f8}.applied-rule{border:1px solid #cbd9e5;padding:12px;border-radius:8px;margin:12px 0}.applied-rule button{align-self:flex-start;font-size:11px}#academyApplied textarea{margin:0}@media(max-width:600px){.academy-selectors{grid-template-columns:1fr}}

.pdf-open{display:inline-flex;align-items:center;padding:10px;border:1px solid #bccedc;border-radius:6px;color:#173b5d;font-weight:bold;text-decoration:none}.pdf-open[hidden]{display:none}#pdfPreparedStatus{flex-basis:100%;margin:0}