.academy-lesson{color:var(--ink);background:#f2f1e9}.lesson-hero{background:var(--deep);color:#fff;grid-template-columns:1.25fr .75fr;align-items:end;gap:7vw;padding:170px clamp(22px,8vw,130px) 78px;display:grid}.lesson-hero h1{letter-spacing:-.065em;color:#fff;max-width:1020px;margin:25px 0;font-size:clamp(52px,7vw,104px);line-height:.9}.lesson-hero>div>p:last-of-type{color:#ffffffad;max-width:800px;font-size:16px;line-height:1.75}.lesson-hero>div>div{border-top:1px solid #ffffff2b;gap:34px;margin-top:38px;padding-top:22px;display:flex}.lesson-hero>div>div span{font:var(--type-label) var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:#ffffff85;display:grid}.lesson-hero>div>div b{font:800 28px/1 var(--font-body);color:var(--yellow)}.lesson-hero>aside{border-left:3px solid var(--yellow);background:#ffffff12;gap:14px;padding:28px;display:grid}.lesson-hero>aside span,.lesson-hero>aside small{font:var(--type-label)/1.6 var(--font-mono);letter-spacing:.12em;color:var(--yellow)}.lesson-hero>aside strong{font-size:15px;line-height:1.6}.lesson-hero>aside small{color:#ffffff85;letter-spacing:0}.lesson-sequence{border-bottom:1px solid var(--line);background:#fff;grid-template-columns:repeat(5,1fr);display:grid}.lesson-sequence a{border-right:1px solid var(--line);grid-template-columns:28px 1fr;align-items:center;gap:10px;min-height:86px;padding:20px 24px;display:grid}.lesson-sequence a b{font:var(--type-label) var(--font-mono);color:var(--green)}.lesson-sequence a span{font-size:11px;font-weight:800}.lesson-sequence a.active{background:var(--yellow)}.lesson-shell{grid-template-columns:245px minmax(0,1fr);gap:50px;max-width:1500px;margin:auto;padding:70px clamp(22px,6vw,90px);display:grid}.lesson-index{border-top:3px solid var(--green);align-self:start;display:grid;position:sticky;top:110px}.lesson-index span{font:var(--type-label) var(--font-mono);letter-spacing:.12em;color:var(--green);padding:17px 13px}.lesson-index a{border-top:1px solid var(--line);min-height:44px;font-size:var(--type-note);color:var(--muted);padding:11px 13px}.lesson-index a:hover{color:var(--green);background:#fff}.lesson-content{min-width:0}.lesson-content>section,.lesson-content>div{scroll-margin-top:105px}.lesson-objectives{background:var(--yellow);padding:clamp(28px,4vw,48px)}.lesson-objectives>span,.lesson-explanation>span,.lesson-worked span,.lesson-misconception>span,.lesson-reference span,.lesson-check>header>span,.lesson-check-result>header>span{font:var(--type-label) var(--font-mono);letter-spacing:.13em;color:var(--green)}.lesson-objectives h2,.lesson-explanation>h2,.lesson-technical-visual h2,.lesson-worked h2,.lesson-check h2,.lesson-reference h2{margin:18px 0 25px;font-size:clamp(32px,4vw,54px);line-height:1}.lesson-objectives ol{gap:11px;padding-left:22px;display:grid}.lesson-objectives li{font-size:13px;line-height:1.65}.lesson-explanation{background:#fff;padding:clamp(38px,5vw,68px)}.lesson-explanation>p{color:#34473f;max-width:900px;font-size:15px;line-height:1.85}.lesson-explanation>div{border-top:1px solid var(--line);margin:40px 0}.lesson-explanation article{border-bottom:1px solid var(--line);grid-template-columns:45px 1fr auto;align-items:center;gap:18px;padding:22px 10px;display:grid}.lesson-explanation article>b{font:var(--type-label) var(--font-mono);color:var(--green)}.lesson-explanation article h3{margin:0 0 7px;font-size:21px}.lesson-explanation article p{font-size:var(--type-note);color:var(--muted);text-wrap:pretty;margin:0;line-height:1.65}.lesson-explanation article small{font:var(--type-note)/1.45 var(--font-mono);color:var(--green);text-transform:uppercase}.lesson-explanation>aside{border-left:4px solid var(--yellow);background:#edf1ec;padding:23px 26px}.lesson-explanation>aside b{font:var(--type-label) var(--font-mono);letter-spacing:.12em;color:var(--green)}.lesson-explanation>aside p{margin:11px 0 0;font-size:12px;line-height:1.7}.lesson-technical-visual{background:var(--forest);color:#fff;margin:0;padding:clamp(35px,5vw,65px)}.lesson-technical-visual>header>span{font:var(--type-label) var(--font-mono);letter-spacing:.13em;color:var(--yellow)}.lesson-technical-visual h2{color:#fff;max-width:850px}.lesson-technical-visual>header p{color:#ffffffa6;max-width:800px;font-size:12px;line-height:1.7}.lesson-trace{align-items:stretch;margin:40px 0 26px;padding-bottom:8px;display:flex;overflow-x:auto}.lesson-trace>div{flex:1;align-items:center;min-width:150px;display:flex}.lesson-trace article{min-height:135px;color:var(--ink);background:#fff;flex:1;align-content:space-between;padding:18px;display:grid}.lesson-trace article b{font:var(--type-label) var(--font-mono);color:var(--green)}.lesson-trace article strong{font-size:12px;line-height:1.35}.lesson-trace i{color:var(--yellow);padding:0 8px;font-style:normal}.lesson-chart{background:#ffffff0f;grid-template-columns:40px 1fr;margin:42px 0 28px;padding:28px 28px 18px;display:grid}.chart-y{writing-mode:vertical-rl;font:var(--type-label) var(--font-mono);color:#ffffff80;justify-content:space-between;display:flex;transform:rotate(180deg)}.chart-plot{border-bottom:1px solid #ffffff40;border-left:1px solid #ffffff40;align-items:flex-end;gap:8px;height:260px;padding:12px 12px 0;display:flex}.chart-column{flex-direction:column;flex:1;justify-content:flex-end;align-items:center;gap:9px;height:100%;display:flex}.chart-column i{background:linear-gradient(180deg,var(--yellow),#d8a91c);width:100%;max-width:66px;min-height:8px;display:block}.chart-column b{font:var(--type-label) var(--font-mono);color:#ffffffb3}.lesson-chart>p{font:var(--type-label) var(--font-mono);color:#ffffff8c;grid-column:2;margin:12px 0 0}.lesson-technical-visual figcaption{border-top:1px solid #ffffff2b;grid-template-columns:120px 1fr;gap:18px;padding-top:20px;display:grid}.lesson-technical-visual figcaption b{font:var(--type-label) var(--font-mono);color:var(--yellow)}.lesson-technical-visual figcaption span{font-size:var(--type-label);color:#ffffff94;line-height:1.6}.lesson-worked{background:#e5ebe5;padding:clamp(38px,5vw,68px)}.lesson-worked header>p{font-size:14px;line-height:1.7}.lesson-worked>div{grid-template-columns:.8fr 1.2fr;gap:30px;margin-top:30px;display:grid}.lesson-worked aside{background:#fff;padding:24px}.lesson-worked aside b,.lesson-worked footer b{font:var(--type-label) var(--font-mono);letter-spacing:.12em;color:var(--green)}.lesson-worked li{font-size:var(--type-note);text-wrap:pretty;margin-bottom:8px;line-height:1.65}.lesson-worked>div>ol{background:#fff;margin:0;padding:24px 24px 24px 48px}.lesson-worked footer{background:var(--yellow);margin-top:12px;padding:24px}.lesson-worked footer p{margin:10px 0 0;font-size:12px;line-height:1.65}.lesson-misconception{background:#fff;padding:clamp(38px,5vw,68px)}.lesson-misconception blockquote{letter-spacing:-.035em;max-width:850px;margin:25px 0;font-size:clamp(28px,4vw,48px);line-height:1.08}.lesson-misconception>p{border-left:3px solid var(--yellow);max-width:850px;padding-left:20px;font-size:14px;line-height:1.75}.lesson-check{border-top:5px solid var(--green);background:#e9eee9}.lesson-check>header{padding:clamp(32px,5vw,55px)}.lesson-check>header p{max-width:760px;font-size:var(--type-note);color:var(--muted);text-wrap:pretty;line-height:1.65}.lesson-check>article{border-top:1px solid var(--line);padding:32px clamp(22px,5vw,55px)}.lesson-check>article>small{font:var(--type-label)/1.5 var(--font-mono);letter-spacing:.08em;color:var(--green)}.lesson-check h3{max-width:900px;font-size:clamp(22px,3vw,34px);line-height:1.12}.lesson-check>article>div{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.lesson-check>article>div button{border:1px solid var(--line);text-align:left;min-height:84px;font-size:var(--type-compact);background:#fff;grid-template-columns:25px 1fr;gap:10px;padding:16px;line-height:1.5;display:grid}.lesson-check>article>div button.selected{background:var(--forest);color:#fff}.lesson-check>article>div b{color:var(--green)}.lesson-check>article>div button.selected b{color:var(--yellow)}.lesson-check fieldset{border:0;flex-wrap:wrap;gap:15px;margin:14px 0 0;padding:0;display:flex}.lesson-check legend{font:var(--type-label)/1.5 var(--font-mono);color:var(--muted);margin-bottom:8px}.lesson-check label{border:1px solid var(--line);min-height:44px;font-size:var(--type-note);background:#fff;align-items:center;gap:8px;padding:8px 10px;display:flex}.lesson-check>footer,.lesson-check-result>footer{background:#fff;justify-content:space-between;align-items:center;gap:15px;padding:20px 30px;display:flex}.lesson-check>footer span{font-size:var(--type-note);color:var(--muted);line-height:1.5}.lesson-check>footer button,.lesson-check-result>footer>*{background:var(--forest);color:#fff;min-height:44px;font-size:var(--type-note);border:0;padding:12px 17px;font-weight:800}.lesson-check>footer button:disabled{opacity:.4}.lesson-check-result{border-top:6px solid var(--yellow);background:#edf1ec}.lesson-check-result>header{background:var(--forest);color:#fff;padding:clamp(35px,5vw,60px)}.lesson-check-result>header>span{color:var(--yellow)}.lesson-check-result>header>strong{color:var(--yellow);font-variant-numeric:tabular-nums;margin:25px 0 10px;font-size:80px;line-height:1;display:block}.lesson-check-result>header h2{margin:0;font-size:clamp(32px,4vw,52px)}.lesson-check-result>header p{max-width:760px;font-size:var(--type-compact);color:#ffffffb8;text-wrap:pretty;line-height:1.7}.lesson-check-result>div{padding:25px}.lesson-check-result article{border-top:1px solid var(--line);background:#fff;padding:24px}.lesson-check-result article.review{border-left:4px solid #bc713c}.lesson-check-result article>b{font:var(--type-label)/1.5 var(--font-mono);color:var(--green)}.lesson-check-result article h3{font-size:18px;line-height:1.25}.lesson-check-result article p{font-size:var(--type-compact);color:var(--muted);text-wrap:pretty;line-height:1.65}.lesson-check-result article small{font-size:var(--type-note);color:var(--muted);line-height:1.6}.lesson-check-result>footer{justify-content:flex-end}.lesson-check-result>footer a{background:var(--yellow);color:var(--deep)}.lesson-reference{background:#fff;grid-template-columns:1.25fr .75fr;display:grid}.lesson-reference>div,.lesson-reference>aside{padding:clamp(32px,5vw,58px)}.lesson-reference>aside{background:var(--deep);color:#fff}.lesson-reference>div>a:not(.lesson-paper-link){border-top:1px solid var(--line);grid-template-columns:30px 1fr auto;gap:14px;padding:18px 0;display:grid}.lesson-reference>div>a>b{font:var(--type-label) var(--font-mono);color:var(--green)}.lesson-reference>div>a>span{gap:5px;display:grid}.lesson-reference>div strong{font-size:12px}.lesson-reference>div small,.lesson-reference>div p{font-size:var(--type-note);color:var(--muted);text-wrap:pretty;margin:0;line-height:1.6}.lesson-reference>div i{font-size:var(--type-label);color:var(--green);font-style:normal}.lesson-paper-link{background:var(--forest);color:#fff;min-height:44px;font-size:var(--type-label);align-items:center;margin-top:25px;padding:13px 16px;font-weight:800;display:inline-flex}.lesson-reference>aside>span{color:var(--yellow)}.lesson-reference details{border-top:1px solid #ffffff26}.lesson-reference summary{cursor:pointer;padding:17px 0;font-size:13px;font-weight:800}.lesson-reference details p{font-size:var(--type-note);color:#ffffffb8;text-wrap:pretty;line-height:1.65}.lesson-reference>aside>a{min-height:44px;color:var(--yellow);font-size:var(--type-label);align-items:center;font-weight:800;display:inline-flex}.lesson-next{justify-content:space-between;gap:20px;padding:26px 0;display:flex}.lesson-next a{border:1px solid var(--green);min-height:44px;color:var(--green);font-size:var(--type-label);padding:12px 15px;font-weight:800}.lesson-next a:last-child{background:var(--green);color:#fff}@media (max-width:1000px){.lesson-hero{grid-template-columns:1fr}.lesson-sequence{grid-template-columns:repeat(5,minmax(190px,1fr));overflow-x:auto}.lesson-shell{grid-template-columns:1fr}.lesson-index{border-top:0;display:flex;position:static;overflow-x:auto}.lesson-index span{display:none}.lesson-index a{white-space:nowrap;border:1px solid var(--line)}.lesson-reference{grid-template-columns:1fr}}@media (max-width:760px){.lesson-hero{padding-top:135px}.lesson-hero>div>div{gap:18px}.lesson-shell{gap:20px;padding-inline:0}.lesson-index,.lesson-objectives,.lesson-explanation,.lesson-worked,.lesson-misconception{padding-inline:20px}.lesson-explanation article{grid-template-columns:35px 1fr}.lesson-explanation article small{grid-column:2}.lesson-technical-visual{padding-inline:20px}.lesson-worked>div,.lesson-check>article>div{grid-template-columns:1fr}.lesson-check>footer{flex-direction:column;align-items:stretch}.lesson-reference>div,.lesson-reference>aside{padding-inline:20px}.lesson-reference>div>a:not(.lesson-paper-link){grid-template-columns:25px 1fr}.lesson-reference>div i{grid-column:2}.lesson-next{flex-direction:column;align-items:stretch;padding:20px}.lesson-next a{text-align:center}.lesson-technical-visual figcaption{grid-template-columns:1fr}.chart-plot{height:220px;padding-inline:5px}.chart-column b{font-size:var(--type-label)}}.diagram-stage{background:linear-gradient(145deg,#ffffff17,#ffffff06);border:1px solid #ffffff2b;min-height:370px;margin:42px 0 28px;padding:32px;position:relative;overflow:hidden}.system-node{min-height:108px;color:var(--ink);z-index:2;background:#fff;align-content:space-between;gap:12px;padding:15px;display:grid;position:relative;box-shadow:0 18px 45px #00000029}.system-node>b{font:var(--type-label) var(--font-mono);color:var(--green)}.system-node>i{border:5px solid var(--yellow);border-radius:50%;width:26px;height:26px;box-shadow:0 0 0 5px #f4bf201f}.system-node>strong{font-size:var(--type-label);line-height:1.35}.ami-field,.ami-platform,.water-nodes,.meter-chain,.ev-feeder,.bess-sources,.bess-loads{gap:12px;display:flex}.ami-field{width:47%}.ami-platform{width:68%;margin:62px 0 0 auto}.signal-rail{background:repeating-linear-gradient(90deg,var(--yellow) 0 13px,transparent 13px 24px);height:2px;position:absolute;top:46%;left:12%;right:13%;transform:rotate(5deg)}.signal-rail i{background:var(--yellow);border-radius:50%;width:9px;height:9px;animation:3.2s linear infinite academySignal;position:absolute;top:-4px}.signal-rail i:nth-child(2){animation-delay:.8s}.signal-rail i:nth-child(3){animation-delay:1.6s}.signal-rail i:nth-child(4){animation-delay:2.4s}.return-path{font:var(--type-label) var(--font-mono);letter-spacing:.12em;color:var(--yellow);position:absolute;bottom:18px;left:32px}.return-path span{font-size:22px}.water-diagram{padding-top:76px}.pipe{background:#0e6580;border:4px solid #78c9ee;height:34px;position:absolute;top:48%;left:35px;right:35px;overflow:hidden}.pipe i{background:#b9edff;border-radius:50% 50% 50% 0;width:14px;height:14px;margin:6px 23px;animation:3s linear infinite waterPulse;display:inline-block;position:relative;transform:rotate(-45deg)}.water-nodes{justify-content:space-between;position:relative}.water-nodes .system-node{width:15%;min-height:140px}.water-nodes .meter-body{border-radius:50%;transform:scale(1.08)}.water-diagram aside{font:var(--type-label) var(--font-mono);color:#b9edff;gap:18px;display:flex;position:absolute;bottom:20px;right:32px}.bess-diagram{grid-template-columns:.7fr 1.5fr .7fr;align-items:center;gap:20px;display:grid}.bess-sources,.bess-loads{display:grid}.bess-core{grid-template-columns:1fr 1fr;gap:10px;display:grid}.battery-rack{background:#071f1b;grid-column:1/-1;align-items:center;gap:5px;padding:16px;display:flex}.battery-rack span{background:linear-gradient(0deg,var(--yellow) 68%,#ffffff1a 68%);flex:1;height:58px}.battery-rack b{font:var(--type-label) var(--font-mono);margin-left:10px}.bess-diagram>p{font:var(--type-label) var(--font-mono);color:var(--yellow);justify-content:space-between;display:flex;position:absolute;bottom:15px;left:32px;right:32px}.ev-feeder .system-node{flex:1}.charger-bank{grid-template-columns:repeat(3,1fr);gap:18px;margin:48px 0 25px;display:grid}.charger-bank article{min-height:105px;color:var(--ink);background:#fff;padding:16px;position:relative}.charger-bank article>i{border:3px solid var(--forest);border-radius:5px;width:36px;height:55px;display:block}.charger-bank article>b{font:var(--type-label) var(--font-mono);position:absolute;top:37px;left:25px}.cable{border-top:3px solid var(--yellow);position:absolute;top:53px;left:54px;right:65px}.vehicle{background:var(--forest);color:#fff;font:var(--type-label) var(--font-mono);border-radius:17px 22px 8px 8px;padding:12px 18px;position:absolute;top:32px;right:14px}.ev-diagram aside{grid-template-columns:160px 1fr;align-items:center;gap:10px;display:grid}.ev-diagram aside strong,.ev-diagram aside span{font:var(--type-label) var(--font-mono)}.ev-diagram aside i{background:#ffffff1f;height:12px}.ev-diagram aside i b{background:var(--yellow);height:100%;display:block}.ev-diagram aside span{color:#ffffff94;grid-column:2}.metering-diagram{grid-template-columns:160px 1fr;align-items:center;gap:28px;display:grid}.phasor{border:1px solid #ffffff40;border-radius:50%;width:140px;height:140px;position:relative}.phasor i{border-top:4px solid var(--yellow);transform-origin:0;width:58px;position:absolute;top:50%;left:50%}.phasor .phase-b{border-color:#8ed9c7;transform:rotate(120deg)}.phasor .phase-c{border-color:#fff;transform:rotate(240deg)}.phasor b{font:var(--type-label) var(--font-mono);place-items:center;display:grid;position:absolute;inset:0}.meter-chain .system-node{flex:1}.metering-diagram aside{font:var(--type-label) var(--font-mono);color:var(--yellow);grid-column:2;justify-content:space-between;display:flex}.single-line{align-items:center;min-width:760px;display:flex}.single-line>div{flex:1;align-items:center;display:flex}.single-line .system-node{flex:1;min-width:95px}.conductor{background:var(--yellow);flex:1;min-width:25px;height:3px}.transformer-symbol>i{border-radius:50% 0}.breaker-symbol>i{border-radius:2px;transform:rotate(45deg)}.protection-zones{grid-template-columns:1fr 1fr 1fr;gap:3px;margin-top:22px;display:grid}.protection-zones span{font:var(--type-label) var(--font-mono);text-align:center;color:var(--yellow);border:1px dashed #ffffff59;padding:10px}.engineering-profile{background:#0000002b;margin:20px 0 28px;padding:22px}.engineering-profile>span{font:var(--type-label) var(--font-mono);color:var(--yellow)}.engineering-profile>div{border-bottom:1px solid #ffffff40;border-left:1px solid #ffffff40;align-items:flex-end;gap:8px;height:150px;margin-top:18px;display:flex}.engineering-profile i{background:linear-gradient(var(--yellow),#b78305);flex:1;max-width:80px;font-style:normal;position:relative}.engineering-profile i b{font:var(--type-label) var(--font-mono);padding-top:5px;position:absolute;top:100%}.engineering-profile i small{color:var(--deep);font:var(--type-label) var(--font-mono);position:absolute;top:5px;left:6px}.engineering-profile>p{font:var(--type-label) var(--font-mono);color:#ffffff8c;margin:24px 0 0}@keyframes academySignal{0%{left:0}to{left:100%}}@keyframes waterPulse{0%{left:-20%}to{left:105%}}@media (prefers-reduced-motion:reduce){.signal-rail i,.pipe i{animation:none}}.engineering-depth{border-left:1px solid var(--line);border-right:1px solid var(--line);background:#e8eee9}.engineering-depth details>summary{cursor:pointer;justify-content:space-between;align-items:center;gap:25px;padding:30px clamp(24px,4vw,48px);list-style:none;display:flex}.engineering-depth summary::-webkit-details-marker{display:none}.engineering-depth summary span{gap:7px;display:grid}.engineering-depth summary b,.engineering-depth-body>*>span{font:var(--type-label) var(--font-mono);letter-spacing:.12em;color:var(--green)}.engineering-depth summary strong{font-size:clamp(24px,3vw,38px)}.engineering-depth summary small{font-size:var(--type-label);color:var(--muted);line-height:1.55}.engineering-depth summary>i{font-size:34px;font-style:normal;transition:transform .2s}.engineering-depth details[open] summary>i{transform:rotate(45deg)}.engineering-depth-body{grid-template-columns:1fr 1fr;gap:16px;padding:0 clamp(24px,4vw,48px) 46px;display:grid}.engineering-depth-body>header,.engineering-depth-body>section,.engineering-depth-body>aside{background:#fff;padding:25px}.engineering-depth-body>header{grid-column:1/-1}.engineering-depth-body>header>strong{margin:14px 0;font-size:clamp(20px,2.4vw,31px);line-height:1.25;display:block}.engineering-depth-body li,.engineering-depth-body p{font-size:var(--type-note);color:var(--muted);text-wrap:pretty;line-height:1.65}.engineering-depth-body ol{padding:0;list-style:none}.engineering-depth-body ol li{border-bottom:1px solid var(--line);grid-template-columns:30px 1fr;gap:9px;padding:10px 0;display:grid}.engineering-depth-body ol b{font:var(--type-label) var(--font-mono);color:var(--green)}.failure-table{grid-column:1/-1}.failure-table>div>header,.failure-table article{grid-template-columns:1fr 1fr 1.2fr;display:grid}.failure-table>div>header b,.failure-table article p{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:12px}.failure-table>div>header b{background:var(--deep);color:#fff;font:var(--type-label) var(--font-mono);margin-top:15px}.engineering-depth-body>aside{background:var(--yellow);border-left:5px solid var(--forest);grid-column:1/-1}.engineering-depth-body>aside b{font:var(--type-label) var(--font-mono);color:var(--forest)}@media (max-width:760px){.diagram-stage{min-height:420px;margin-inline:-4px;padding:18px}.ami-field,.ami-platform,.water-nodes,.meter-chain,.ev-feeder{width:100%;overflow-x:auto}.ami-platform{margin-top:90px}.system-node{min-width:120px}.water-nodes .system-node{width:auto;min-width:120px}.bess-diagram{grid-template-columns:1fr}.bess-sources,.bess-loads{grid-template-columns:1fr 1fr}.ev-diagram aside{grid-template-columns:1fr}.ev-diagram aside span{grid-column:1}.charger-bank{grid-template-columns:1fr}.metering-diagram{grid-template-columns:1fr;overflow-x:auto}.meter-chain,.metering-diagram aside{grid-column:1}.single-line{min-width:760px}.electrical-diagram{overflow-x:auto}.engineering-depth-body{grid-template-columns:1fr}.engineering-depth-body>header,.failure-table,.engineering-depth-body>aside{grid-column:1}.failure-table>div>header{display:none}.failure-table article{grid-template-columns:1fr}.failure-table article p:before{font:var(--type-label) var(--font-mono);color:var(--green);display:block}.failure-table article p:first-child:before{content:"OBSERVED SIGNAL"}.failure-table article p:nth-child(2):before{content:"POSSIBLE CAUSE"}.failure-table article p:nth-child(3):before{content:"DISCRIMINATING TEST"}}@media (prefers-reduced-motion:reduce){.lesson-sequence a,.lesson-index a{scroll-behavior:auto}}.academy-lesson .lesson-hero>aside span{font:var(--type-label)/1.6 var(--font-mono);letter-spacing:.12em;color:var(--yellow)}.academy-lesson .lesson-hero>aside small{font:var(--type-note)/1.6 var(--font-body);letter-spacing:0;color:#ffffffad;text-wrap:pretty}.academy-lesson .engineering-depth summary small{font-size:var(--type-note);text-wrap:pretty;line-height:1.6}.lesson-technical-visual>header>span{font-size:var(--type-label);letter-spacing:.12em}.lesson-technical-visual figcaption b{font-size:var(--type-label)}.lesson-technical-visual figcaption span{font-size:var(--type-note)}.academy-lesson.al{--al-graphite:#0b0d0c;--al-carbon:#141816;--al-panel:#141816;--al-line:#e2e8e51f;--al-steel:#8d9592;--al-mist:#c9cfcc;--al-paper:#eef1ef;--al-signal:#f5cf45;--al-ink:#101412;--al-ease:cubic-bezier(.16,1,.3,1);background:var(--al-graphite);color:var(--al-paper)}body:has(.academy-lesson.al){background:#0b0d0c;overflow-x:visible}body:has(.academy-lesson.al) .site-header{-webkit-backdrop-filter:blur(16px);background:#0b0d0cd6;border-bottom:1px solid #e2e8e51a}.academy-lesson.al :is(a,button,summary,label):focus-visible{outline:2px solid var(--al-signal);outline-offset:3px}.academy-lesson.al .al-progress{z-index:120;background:var(--al-signal);transform-origin:0;width:100%;height:3px;display:none;position:fixed;top:0;left:0;transform:scaleX(0)}@supports (animation-timeline:scroll()){.academy-lesson.al .al-progress{display:block}.academy-lesson.al .al-progress[data-motion=running]{animation:linear both alProgress;animation-timeline:scroll(root)}}@keyframes alProgress{to{transform:scaleX(1)}}.academy-lesson.al .lesson-hero{background:radial-gradient(110% 90% at 80% 20%,#141816 0%,#0b0d0c 60%)}.academy-lesson.al .lesson-hero .eyebrow{font-family:var(--font-mono),monospace;letter-spacing:.14em;color:var(--al-steel)}.academy-lesson.al .lesson-hero .eyebrow span{background:var(--al-signal)}.academy-lesson.al .lesson-hero h1{letter-spacing:-.045em;text-wrap:balance;max-width:14ch;font-weight:200;line-height:.98}.academy-lesson.al .lesson-hero>div>p{color:var(--al-mist);font-weight:300}.academy-lesson.al .lesson-hero>div>div{border-top-color:var(--al-line)}.academy-lesson.al .lesson-hero>div>div span{color:var(--al-steel)}.academy-lesson.al .lesson-hero>div>div span b{color:var(--al-paper);font-weight:200}.academy-lesson.al .lesson-hero>aside{border:1px solid var(--al-line);border-left:3px solid var(--al-signal);background:#141816c7;border-radius:18px}.academy-lesson.al .lesson-sequence{background:var(--al-carbon);border-color:var(--al-line)}.academy-lesson.al .lesson-sequence a{color:var(--al-mist);border-color:var(--al-line);background:0 0}.academy-lesson.al .lesson-sequence a b{color:var(--al-steel)}.academy-lesson.al .lesson-sequence a.active{color:#fff;box-shadow:inset 0 -3px var(--al-signal);background:#f5cf451a}.academy-lesson.al .lesson-sequence a.active b{color:var(--al-signal)}.academy-lesson.al .lesson-shell{background:var(--al-graphite)}.academy-lesson.al .lesson-index{color:var(--al-mist);background:0 0}.academy-lesson.al .lesson-index span{color:var(--al-steel);font-family:var(--font-mono),monospace;letter-spacing:.14em}.academy-lesson.al .lesson-index a{color:var(--al-mist);border-color:var(--al-line)}.academy-lesson.al .lesson-index a:hover{color:var(--al-signal)}.academy-lesson.al .lesson-content{background:var(--al-paper);color:var(--al-ink);border-radius:24px 24px 0 0;overflow:hidden}.academy-lesson.al .lesson-content h2{letter-spacing:-.03em;text-wrap:balance;font-weight:300}.academy-lesson.al :is(.lesson-objectives,.lesson-explanation,.lesson-worked,.lesson-check,.lesson-check-result){background:var(--al-paper);color:var(--al-ink)}.academy-lesson.al .lesson-objectives{border-bottom:1px solid #1014121a}.academy-lesson.al .lesson-objectives span,.academy-lesson.al .lesson-explanation>span,.academy-lesson.al .lesson-worked header span,.academy-lesson.al .lesson-reference span{color:#5b6360;font-family:var(--font-mono),monospace;letter-spacing:.14em}.academy-lesson.al .lesson-objectives ol li{border-color:#10141224}.academy-lesson.al .lesson-objectives ol li:before{color:#5b6360}.academy-lesson.al .lesson-objectives ol li::marker{color:#5b6360}.academy-lesson.al .lesson-explanation>p{color:#2c3230;line-height:1.8}.academy-lesson.al .lesson-explanation article{background:#fff;border:1px solid #1014121a;border-radius:16px}.academy-lesson.al .lesson-explanation aside{background:#fff;border:1px dashed #10141238;border-radius:16px}.academy-lesson.al .lesson-worked>div>aside,.academy-lesson.al .lesson-worked ol{background:#fff;border-radius:16px}.academy-lesson.al .lesson-worked footer{background:var(--al-ink);color:var(--al-paper);border-radius:16px}.academy-lesson.al .lesson-worked footer :is(b,span,strong){color:var(--al-signal)}.academy-lesson.al .engineering-depth{color:var(--al-ink);background:#eef1ef}.academy-lesson.al .engineering-depth summary{border-radius:14px}.academy-lesson.al .engineering-depth-body{background:#fff;border-radius:16px}.academy-lesson.al #visual,.academy-lesson.al .lesson-technical-visual{background:var(--al-graphite);color:var(--al-paper)}.academy-lesson.al .lesson-technical-visual h2{color:var(--al-paper);font-weight:200}.academy-lesson.al .diagram-stage{background:var(--al-carbon);border-color:var(--al-line);border-radius:18px}.academy-lesson.al .system-node{background:var(--al-panel);color:var(--al-paper);border:1px solid var(--al-line);border-radius:12px}.academy-lesson.al .lesson-misconception{background:var(--al-graphite);color:var(--al-paper)}.academy-lesson.al .lesson-misconception>span{color:#f08f7a;font-family:var(--font-mono),monospace;letter-spacing:.14em}.academy-lesson.al .lesson-misconception blockquote{letter-spacing:-.03em;color:var(--al-mist);font-weight:200;-webkit-text-decoration:line-through #f08f7acc;text-decoration:line-through #f08f7acc;text-decoration-thickness:2px}.academy-lesson.al .lesson-misconception>p{border-left:3px solid var(--al-signal);color:var(--al-paper);padding-left:18px}.academy-lesson.al .lesson-check>article{background:#fff;border:1px solid #1014121a;border-radius:18px}.academy-lesson.al .lesson-check>article>div button{color:var(--al-ink);background:#fff;border:1.5px solid #10141229;border-radius:12px}.academy-lesson.al .lesson-check>article>div button:hover{border-color:#10141273}.academy-lesson.al .lesson-check>article>div button.selected{background:var(--al-ink);border-color:var(--al-ink);color:#fff;box-shadow:inset 0 0 0 2px var(--al-signal)}.academy-lesson.al .lesson-check>footer button{background:var(--al-ink);color:var(--al-signal);border-radius:12px}.academy-lesson.al .lesson-check-result>header{background:var(--al-graphite);color:var(--al-paper);border-radius:18px}.academy-lesson.al .lesson-check-result>header strong{color:var(--al-signal);font-weight:200}.academy-lesson.al .lesson-check-result article{background:#fff;border-radius:16px}.academy-lesson.al .lesson-reference>div{background:var(--al-paper);color:var(--al-ink)}.academy-lesson.al .lesson-reference>div a{border-color:#1014121f}.academy-lesson.al .lesson-reference>div a strong{font-family:var(--font-geist),Arial,sans-serif;letter-spacing:-.01em;color:var(--al-ink)}.academy-lesson.al .lesson-reference>div a :is(small,p){font-family:var(--font-geist),Arial,sans-serif;letter-spacing:0;color:#4b5350}.academy-lesson.al .lesson-paper-link{background:var(--al-ink);color:var(--al-signal);border-radius:12px}.academy-lesson.al .lesson-reference>aside{background:var(--al-graphite);color:var(--al-paper)}.academy-lesson.al .lesson-reference>aside summary{color:var(--al-paper)}.academy-lesson.al .lesson-reference>aside a{color:var(--al-signal)}.academy-lesson.al .lesson-next{background:var(--al-paper);border-color:#1014121f}.academy-lesson.al .lesson-next a{color:var(--al-ink);border-radius:14px}.academy-lesson.al .lesson-next a:last-child{background:var(--al-signal);color:#101412;font-weight:600}@media (max-width:1000px){.academy-lesson.al .lesson-index{background:var(--al-carbon)}.academy-lesson.al .lesson-content{border-radius:0}}@media (prefers-reduced-motion:reduce){.academy-lesson.al .al-progress{animation:none;display:none}}.academy-lesson.al .lesson-index{border-top-color:var(--al-signal)!important}.academy-lesson.al .content-feedback{background:var(--al-carbon);color:var(--al-paper)}.academy-lesson.al .content-feedback :is(p,small,span){color:var(--al-mist)}@media (max-width:760px){.academy-lesson.al .lesson-hero h1{max-width:none;font-size:clamp(38px,10.5vw,54px)}}.academy-lesson.al .battery-rack{background:var(--al-carbon)}.academy-lesson.al .battery-rack span{background:linear-gradient(0deg,var(--al-signal) 68%,#e2e8e51f 68%)}.academy-lesson.al .battery-rack b{color:var(--al-mist)}.academy-lesson.al .pipe{background:var(--al-carbon);border-color:#5b6360}.academy-lesson.al .pipe i{background:var(--al-mist)}.academy-lesson.al .engineering-depth-body>aside p{color:#101412}.academy-lesson.al .lesson-reference>aside span{color:var(--al-mist)}.academy-lesson.al .content-feedback .feedback-actions button span{color:#3c4441}.academy-lesson .lesson-sequence{grid-template-columns:none;grid-auto-columns:minmax(0,1fr);grid-auto-flow:column}@media (max-width:1000px){.academy-lesson .lesson-sequence{scroll-snap-type:x proximity;scrollbar-width:thin;grid-auto-columns:minmax(168px,40%)}.academy-lesson .lesson-sequence a{scroll-snap-align:start}}@media (max-width:620px){.academy-lesson .lesson-check>article>div button{min-height:56px}}.academy-lesson .engineering-chart>header span,.academy-lesson .engineering-chart>header>strong,.academy-lesson .engineering-legend{font-size:var(--type-label)}.academy-lesson .engineering-chart-note{font-size:var(--type-note)}.academy-lesson.al.ll-lesson{--lr-reading:clamp(18px,calc(1.05vw + 5.5px),21px);--lr-measure:32em;--lr-h2:clamp(30px,2.8vw,44px);--lr-section-gap:clamp(84px,8.4vw,136px);--lr-index-w:188px;--lr-inline:max(var(--ll-gutter),calc(50% - 700px));background:var(--ll-stone);color:var(--ll-ink)}.academy-lesson.al.ll-lesson :is(a,button,summary,label):focus-visible{outline:3px solid var(--ll-ink);outline-offset:3px}.academy-lesson.al.ll-lesson :is(.ll-dusk,.ll-night) :is(a,button,summary):focus-visible{outline-color:var(--ll-signal)}.academy-lesson.al.ll-lesson .lr-opening{overflow:hidden}.academy-lesson.al.ll-lesson .lr-opening:before{content:"";z-index:-1;pointer-events:none;background:radial-gradient(52% 60% at 16% 0,#ffeec413,#0000 70%),linear-gradient(#0000 60%,#00000047);position:absolute;inset:0}.academy-lesson.al.ll-lesson .lr-arrival{padding:clamp(128px,15vh,172px) var(--lr-inline) clamp(36px,4vw,56px);grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);align-items:end;gap:clamp(28px,4vw,80px);display:grid}.academy-lesson.al.ll-lesson .lr-arrival__copy{min-width:0}.academy-lesson.al.ll-lesson .lr-arrival__kicker{color:var(--ll-fg-soft);flex-wrap:wrap;align-items:center;gap:8px 0;display:flex}.academy-lesson.al.ll-lesson .lr-arrival__kicker span+span:before{content:"";vertical-align:middle;background:var(--ll-rule-strong);width:22px;height:1px;margin:0 14px;display:inline-block}.academy-lesson.al.ll-lesson .lr-arrival__kicker span:nth-child(2){color:var(--ll-signal)}.academy-lesson.al.ll-lesson .lr-arrival__title{letter-spacing:-.052em;text-wrap:balance;max-width:15ch;color:var(--ll-fg);margin:24px 0 0;font-size:clamp(44px,5vw,84px);font-weight:250;line-height:.95}.academy-lesson.al.ll-lesson .lr-arrival__lede{max-width:42ch;color:var(--ll-fg-soft);margin-top:clamp(22px,2.4vw,32px)}.academy-lesson.al.ll-lesson .lr-arrival__data{grid-template-columns:repeat(3,minmax(0,1fr));gap:0 clamp(16px,2vw,32px);max-width:680px;margin:clamp(28px,3vw,40px) 0 0;display:grid}.academy-lesson.al.ll-lesson .lr-arrival__data>div{border-top:1px solid var(--ll-rule);align-content:start;gap:6px;min-width:0;padding:13px 0 12px;display:grid}.academy-lesson.al.ll-lesson .lr-arrival__data>.lr-arrival__audience{border-bottom:1px solid var(--ll-rule);grid-column:1/-1;grid-template-columns:minmax(128px,.3fr) minmax(0,1fr);align-items:baseline;gap:4px 18px}.academy-lesson.al.ll-lesson .lr-arrival__data dt{white-space:nowrap;color:var(--ll-fg-faint)}.academy-lesson.al.ll-lesson .lr-arrival__data dd{color:var(--ll-fg-soft);text-wrap:pretty;margin:0;font-size:15px;line-height:1.5}.academy-lesson.al.ll-lesson .lr-arrival__data dd b{color:var(--ll-fg);font-variant-numeric:tabular-nums;font-weight:500}.academy-lesson.al.ll-lesson .lr-arrival__boundary{max-width:52ch;color:var(--ll-fg-soft);margin:14px 0 0;font-size:13px;line-height:1.55}.academy-lesson.al.ll-lesson .lr-arrival__monument{align-self:end;min-width:0}.academy-lesson.al.ll-lesson .lr-arrival__monument .ll-monument__stage{min-height:clamp(300px,46vh,540px)}.academy-lesson.al.ll-lesson .lesson-sequence.lr-spine{padding:clamp(8px,1vw,14px) var(--lr-inline) clamp(40px,4.4vw,64px);scroll-snap-type:none;background:0 0;border:0;margin:0;display:block;overflow:visible}.academy-lesson.al.ll-lesson .lr-spine__label{color:var(--ll-fg-faint);justify-content:space-between;gap:18px;margin:0 0 18px;display:flex}.academy-lesson.al.ll-lesson .lr-spine ol{grid-template-columns:repeat(var(--lr-stops,6),minmax(0,1fr));gap:0 clamp(12px,1.6vw,28px);margin:0;padding:0;list-style:none;display:grid;position:relative}.academy-lesson.al.ll-lesson .lr-spine ol:before{content:"";background:var(--ll-rule-strong);height:1px;position:absolute;top:7px;left:0;right:0}.academy-lesson.al.ll-lesson .lr-spine li{min-width:0;position:relative}.academy-lesson.al.ll-lesson .lesson-sequence.lr-spine a{min-height:44px;box-shadow:none;color:var(--ll-fg-soft);scroll-snap-align:none;background:0 0;border:0;grid-template-columns:auto;align-content:start;gap:8px;padding:30px 4px 4px 0;text-decoration:none;transition:color .2s;display:grid;position:relative}.academy-lesson.al.ll-lesson .lesson-sequence.lr-spine a:hover{color:var(--ll-fg)}.academy-lesson.al.ll-lesson .lr-spine a>i{border:1px solid var(--ll-rule-strong);background:var(--ll-bg);border-radius:50%;width:15px;height:15px;position:absolute;top:0;left:0}.academy-lesson.al.ll-lesson .lr-spine li[data-complete] a>i{border-color:var(--ll-fg-soft);background:var(--ll-fg-soft)}.academy-lesson.al.ll-lesson .lr-spine li[data-state=current] a>i{border-color:var(--ll-signal);background:var(--ll-signal);box-shadow:0 0 0 6px #f5cf4524}.academy-lesson.al.ll-lesson .lesson-sequence.lr-spine a b{font:500 12px/1.4 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-fg-faint)}.academy-lesson.al.ll-lesson .lesson-sequence.lr-spine a span{letter-spacing:0;text-wrap:balance;font-size:14px;font-weight:450;line-height:1.35}.academy-lesson.al.ll-lesson .lesson-sequence.lr-spine a[aria-current=step]{color:var(--ll-fg)}.academy-lesson.al.ll-lesson .lesson-sequence.lr-spine a[aria-current=step] b{color:var(--ll-signal)}.academy-lesson.al.ll-lesson .lesson-shell.lr-shell{grid-template-columns:var(--lr-index-w) minmax(0,1fr);max-width:none;padding:clamp(72px,7.4vw,120px) var(--lr-inline) clamp(40px,4vw,64px);background:var(--ll-stone);color:var(--ll-ink);gap:clamp(40px,5vw,96px);margin:0;display:grid}.academy-lesson.al.ll-lesson .lesson-index.lr-index{z-index:3;color:var(--ll-ink-soft);background:0 0;border:0;align-content:start;margin:0;padding:0;display:grid}.academy-lesson.al.ll-lesson .lesson-index.lr-index>span{font:500 12px/1.45 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink-faint);padding:0 0 14px;display:block}.academy-lesson.al.ll-lesson .lesson-index.lr-index a{border:0;border-top:1px solid var(--ll-rule);min-height:44px;color:var(--ll-ink-soft);background:0 0;grid-template-columns:30px minmax(0,1fr);align-items:center;padding:0;font-size:14px;line-height:1.3;text-decoration:none;transition:color .2s;display:grid}.academy-lesson.al.ll-lesson .lesson-index.lr-index a:last-child{border-bottom:1px solid var(--ll-rule)}.academy-lesson.al.ll-lesson .lesson-index.lr-index a b{font:500 12px/1 var(--font-mono),ui-monospace,monospace;letter-spacing:.08em;color:var(--ll-ink-faint)}.academy-lesson.al.ll-lesson .lesson-index.lr-index a:hover{color:var(--ll-ink);background:0 0}.academy-lesson.al.ll-lesson .lesson-index.lr-index a:hover b{color:var(--ll-signal-deep)}.academy-lesson.al.ll-lesson .lesson-content.lr-content{min-width:0;max-width:1080px;color:var(--ll-ink);background:0 0;border-radius:0;overflow:visible}.academy-lesson.al.ll-lesson .lr-section{margin:0 0 var(--lr-section-gap);color:var(--ll-ink);background:0 0;border:0;padding:0}.academy-lesson.al.ll-lesson .lr-section__index{border-bottom:1px solid var(--ll-rule);max-width:none;font:500 12px/1.45 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--ll-ink-faint);align-items:center;gap:18px;margin:0 0 clamp(22px,2.2vw,32px);padding:0 0 14px;display:flex}.academy-lesson.al.ll-lesson .lr-section__index>:first-child{color:var(--ll-signal-deep)}.academy-lesson.al.ll-lesson .lr-section__index b{font:inherit;color:inherit}.academy-lesson.al.ll-lesson .lesson-content :is(.lr-section h2,.lr-section>header h2,.lesson-technical-visual h2,.lesson-check h2,.lesson-check-result h2){max-width:24ch;font-size:var(--lr-h2);letter-spacing:-.036em;color:var(--ll-ink);text-wrap:balance;margin:0 0 clamp(22px,2.2vw,32px);font-weight:300;line-height:1.05}.academy-lesson.al.ll-lesson .lr-objectives{border-bottom:1px solid var(--ll-rule);counter-reset:none;max-width:40em;margin:0;padding:0;list-style:none;display:block}.academy-lesson.al.ll-lesson .lr-objectives li{border-top:1px solid var(--ll-rule);color:var(--ll-ink);grid-template-columns:48px minmax(0,1fr);align-items:baseline;gap:0 12px;margin:0;padding:18px 0;font-size:clamp(17px,1.25vw,19px);line-height:1.5;display:grid}.academy-lesson.al.ll-lesson .lr-objectives li:before{content:none}.academy-lesson.al.ll-lesson .lr-objectives li::marker{content:none}.academy-lesson.al.ll-lesson .lr-objectives li>b{color:var(--ll-ink-faint)}.academy-lesson.al.ll-lesson .lr-objectives li>span{font:inherit;letter-spacing:0;text-transform:none;color:inherit;text-wrap:pretty}.academy-lesson.al.ll-lesson .lesson-explanation>.lr-prose{border:0;margin:0;padding:0}.academy-lesson.al.ll-lesson .lr-prose p{max-width:var(--lr-measure);font-size:var(--lr-reading);color:var(--ll-ink);text-wrap:pretty;margin:0 0 1.05em;font-weight:380;line-height:1.64}.academy-lesson.al.ll-lesson .lr-prose p:last-child{margin-bottom:0}.academy-lesson.al.ll-lesson .lr-steps{border-bottom:1px solid var(--ll-rule);margin:clamp(44px,4.6vw,64px) 0 0;padding:0;list-style:none}.academy-lesson.al.ll-lesson .lr-steps li{border-top:1px solid var(--ll-rule);grid-template-columns:56px minmax(0,.4fr) minmax(0,.6fr);align-items:start;gap:8px clamp(18px,2.4vw,40px);padding:clamp(20px,2vw,28px) 0;display:grid}.academy-lesson.al.ll-lesson .lr-steps li>b{color:var(--ll-ink-faint);padding-top:5px}.academy-lesson.al.ll-lesson .lr-steps h3{letter-spacing:-.022em;color:var(--ll-ink);text-wrap:balance;margin:0;font-size:clamp(20px,1.7vw,25px);font-weight:420;line-height:1.16}.academy-lesson.al.ll-lesson .lr-steps li>div p{color:var(--ll-ink-soft);text-wrap:pretty;margin:0;font-size:16.5px;line-height:1.62}.academy-lesson.al.ll-lesson .lr-steps li>div small{color:var(--ll-signal-deep);margin-top:10px;display:block}.academy-lesson.al.ll-lesson .lesson-explanation>.lr-understood{border:0;border-top:2px solid var(--ll-ink);background:0 0;border-radius:0;max-width:40em;margin:clamp(36px,3.4vw,48px) 0 0;padding:20px 0 0}.academy-lesson.al.ll-lesson .lesson-explanation>.lr-understood b{font:500 12px/1.45 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink);display:block}.academy-lesson.al.ll-lesson .lesson-explanation>.lr-understood p{color:var(--ll-ink-soft);text-wrap:pretty;margin:12px 0 0;font-size:17px;line-height:1.6}.academy-lesson.al.ll-lesson #visual{color:var(--ll-ink);background:0 0}.academy-lesson.al.ll-lesson .lesson-technical-visual{color:var(--ll-ink);background:0 0;flex-direction:column;margin:0;padding:0;display:flex}.academy-lesson.al.ll-lesson .lesson-technical-visual>header{order:1}.academy-lesson.al.ll-lesson .lesson-technical-visual>.lr-plate{order:2}.academy-lesson.al.ll-lesson .lesson-technical-visual>figcaption{order:3}.academy-lesson.al.ll-lesson .lesson-technical-visual>header>span{border-bottom:1px solid var(--ll-rule);font:500 12px/1.45 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink-faint);align-items:center;gap:18px;margin:0 0 clamp(22px,2.2vw,32px);padding:0 0 14px;display:flex}.academy-lesson.al.ll-lesson .lesson-technical-visual>header>span:before{content:"03";color:var(--ll-signal-deep)}.academy-lesson.al.ll-lesson .lesson-technical-visual>header p{max-width:var(--lr-measure);color:var(--ll-ink-soft);text-wrap:pretty;margin:0;font-size:clamp(16px,1.2vw,18px);line-height:1.62}.academy-lesson.al.ll-lesson .lr-plate{background:linear-gradient(var(--ll-rule-strong),var(--ll-rule-strong)) top left/16px 1px no-repeat,linear-gradient(var(--ll-rule-strong),var(--ll-rule-strong)) top left/1px 16px no-repeat,linear-gradient(var(--ll-rule-strong),var(--ll-rule-strong)) top right/16px 1px no-repeat,linear-gradient(var(--ll-rule-strong),var(--ll-rule-strong)) top right/1px 16px no-repeat,linear-gradient(var(--ll-rule-strong),var(--ll-rule-strong)) bottom left/16px 1px no-repeat,linear-gradient(var(--ll-rule-strong),var(--ll-rule-strong)) bottom left/1px 16px no-repeat,linear-gradient(var(--ll-rule-strong),var(--ll-rule-strong)) bottom right/16px 1px no-repeat,linear-gradient(var(--ll-rule-strong),var(--ll-rule-strong)) bottom right/1px 16px no-repeat;margin:clamp(28px,3vw,44px) 0 0;padding:clamp(14px,2vw,28px);position:relative}.academy-lesson.al.ll-lesson .lesson-technical-visual>figcaption{border-top:1px solid var(--ll-rule);grid-template-columns:132px minmax(0,1fr);gap:8px 18px;max-width:52em;margin:18px 0 0;padding:14px 0 0;display:grid}.academy-lesson.al.ll-lesson .lesson-technical-visual>figcaption b{font:500 12px/1.5 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink)}.academy-lesson.al.ll-lesson .lesson-technical-visual>figcaption span{color:var(--ll-ink-soft);text-wrap:pretty;font-size:14px;line-height:1.6}.academy-lesson.al.ll-lesson .lr-plate .amv{box-shadow:none;background-color:var(--ll-stone);--amv-paper:var(--ll-stone);--amv-clearing:radial-gradient(closest-side,#ebe7def2 30%,#ebe7de00 96%);border-radius:0;margin:0}.academy-lesson.al.ll-lesson .lr-plate .wel{box-shadow:none;background-color:var(--ll-stone);border-radius:0;margin:0}.academy-lesson.al.ll-lesson .lr-plate .wel-legend .k-against{background:var(--ll-stone)}.academy-lesson.al.ll-lesson .lr-plate .bev{--bev-sheet:var(--ll-stone);--bev-mist:#8f948f;margin:0}.academy-lesson.al.ll-lesson .lr-plate .bev-sheet{background-color:var(--ll-stone);border:0;border-radius:0}.academy-lesson.al.ll-lesson .lr-plate .ptp{--ptp-clearing:radial-gradient(closest-side,#ebe7def2 30%,#ebe7de00 96%)}.academy-lesson.al.ll-lesson .lr-plate .ptp-sheet{box-shadow:none;background-color:var(--ll-stone);background-image:linear-gradient(#1014120f 1px,#0000 1px),linear-gradient(90deg,#1014120f 1px,#0000 1px);border:0;border-radius:0}.academy-lesson.al.ll-lesson .lr-plate [fill=\#eef1ef]{fill:var(--ll-stone)}.academy-lesson.al.ll-lesson .lr-plate .wel-zone>b{background:radial-gradient(closest-side,#ebe7de 60%,#ebe7de00 100%)}.academy-lesson.al.ll-lesson .lesson-technical-visual .lr-plate figcaption{border-top:0;grid-template-columns:none;gap:0;padding-top:0;display:block}.academy-lesson.al.ll-lesson .lr-plate .ptp-units figure{flex:1 1 0}.academy-lesson.al.ll-lesson .lr-plate .ptp-units figcaption{max-width:none}.academy-lesson.al.ll-lesson .lr-plate .bev-bar{color:var(--ll-ink-soft);margin:18px 0 6px}.academy-lesson.al.ll-lesson .lr-plate .bev-states button{border-color:var(--ll-rule-strong);color:var(--ll-ink);background:0 0;border-radius:0}.academy-lesson.al.ll-lesson .lr-plate .bev-states button:hover{border-color:var(--ll-ink)}.academy-lesson.al.ll-lesson .lr-plate .bev-states button[aria-pressed=true]{border-color:var(--ll-ink);background:var(--ll-ink);color:var(--ll-light)}.academy-lesson.al.ll-lesson .lr-plate .bev-states .bev-pause{color:var(--ll-ink-soft)}.academy-lesson.al.ll-lesson .lr-plate .bev-states .bev-pause[aria-pressed=true]{color:var(--ll-ink);border-color:var(--ll-ink);background:0 0}.academy-lesson.al.ll-lesson .lr-plate .bev-states button:focus-visible{outline-color:var(--ll-ink)}.academy-lesson.al.ll-lesson .lr-plate .bev-note{color:var(--ll-ink)}.academy-lesson.al.ll-lesson .lr-plate .bev-legend{color:var(--ll-ink-soft)}.academy-lesson.al.ll-lesson .lr-plate .bev-legend i{border-top-color:var(--ll-ink)}.academy-lesson.al.ll-lesson .lr-plate .bev-legend i.is-dc{border-color:#2f6f62}.academy-lesson.al.ll-lesson .lr-plate .bev-legend i.is-ctl{border-top-color:var(--ll-ink-soft)}.academy-lesson.al.ll-lesson .lr-plate .bev-legend i.is-flow{border-top-color:#b58a00}.academy-lesson.al.ll-lesson .lr-plate .bev-credit{color:var(--ll-ink-faint)}.academy-lesson.al.ll-lesson .lr-plate .engineering-chart{border:0;border-top:1px solid var(--ll-rule);color:var(--ll-ink);background:0 0;margin:22px 0 0;padding:20px 0 0}.academy-lesson.al.ll-lesson .lr-plate .engineering-chart>header span{font-family:var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink-faint)}.academy-lesson.al.ll-lesson .lr-plate .engineering-chart>header h3{letter-spacing:-.02em;color:var(--ll-ink);font-weight:400}.academy-lesson.al.ll-lesson .lr-plate :is(.engineering-legend,.engineering-chart-note){color:var(--ll-ink-soft)}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth{color:var(--ll-ink);background:0 0;border:0}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth details>summary{cursor:pointer;background:0 0;border-radius:0;grid-template-columns:minmax(0,1fr) 44px;grid-template-areas:"index index""title toggle";align-items:end;gap:0 18px;padding:0;list-style:none;display:grid}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth summary>.lr-section__index{grid-area:index;display:flex}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth summary>.lr-depth__title{grid-area:title;gap:10px;display:grid}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth summary strong{max-width:24ch;font-size:var(--lr-h2);letter-spacing:-.036em;color:var(--ll-ink);text-wrap:balance;font-weight:300;line-height:1.05}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth summary small{max-width:52ch;color:var(--ll-ink-soft);font-size:15px;line-height:1.55}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth summary>i{border:1px solid var(--ll-rule-strong);color:#0000;grid-area:toggle;width:44px;height:44px;font-size:0;transition:border-color .2s;display:block;position:relative;transform:none}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth summary:hover>i{border-color:var(--ll-ink)}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth summary>i:before,.academy-lesson.al.ll-lesson .engineering-depth.lr-depth summary>i:after{content:"";background:var(--ll-ink);width:14px;height:1px;margin:-.5px 0 0 -7px;transition:transform .2s;position:absolute;top:50%;left:50%}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth summary>i:after{transform:rotate(90deg)}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth details[open] summary>i{transform:none}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth details[open] summary>i:after{transform:rotate(0)}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth .engineering-depth-body{background:0 0;border-radius:0;grid-template-columns:minmax(0,1fr) minmax(0,1fr);grid-auto-flow:dense;gap:0 clamp(28px,3.4vw,56px);margin:clamp(26px,2.6vw,36px) 0 0;padding:0;display:grid}.academy-lesson.al.ll-lesson .engineering-depth-body>:is(header,section,aside){border:0;border-top:1px solid var(--ll-rule);background:0 0;border-radius:0;margin:0;padding:20px 0 26px}.academy-lesson.al.ll-lesson .engineering-depth-body>*>span{font:500 12px/1.45 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink-faint);margin-bottom:12px;display:block}.academy-lesson.al.ll-lesson .engineering-depth-body>header>strong{letter-spacing:-.012em;max-width:34em;color:var(--ll-ink);margin:4px 0 16px;font-size:clamp(19px,1.6vw,24px);font-weight:380;line-height:1.36;display:block}.academy-lesson.al.ll-lesson .engineering-depth-body :is(li,p){color:var(--ll-ink-soft);font-size:15.5px;line-height:1.6}.academy-lesson.al.ll-lesson .engineering-depth-body ul{margin:0;padding:0 0 0 18px;list-style:square}.academy-lesson.al.ll-lesson .engineering-depth-body ul li::marker{color:var(--ll-ink-faint)}.academy-lesson.al.ll-lesson .engineering-depth-body ul li+li{margin-top:6px}.academy-lesson.al.ll-lesson .engineering-depth-body ol{margin:0;padding:0;list-style:none}.academy-lesson.al.ll-lesson .engineering-depth-body ol li{border-bottom:1px solid var(--ll-rule);grid-template-columns:34px minmax(0,1fr);padding:10px 0}.academy-lesson.al.ll-lesson .engineering-depth-body ol li:last-child{border-bottom:0}.academy-lesson.al.ll-lesson .engineering-depth-body ol b{font:500 12px/1.6 var(--font-mono),ui-monospace,monospace;color:var(--ll-ink-faint)}.academy-lesson.al.ll-lesson .engineering-depth-body>header,.academy-lesson.al.ll-lesson .engineering-depth-body>.failure-table,.academy-lesson.al.ll-lesson .engineering-depth-body>aside{grid-column:1/-1}.academy-lesson.al.ll-lesson .failure-table>div>header,.academy-lesson.al.ll-lesson .failure-table article{grid-template-columns:minmax(0,1fr) minmax(0,1fr) minmax(0,1.2fr)}.academy-lesson.al.ll-lesson .failure-table>div>header b{border:0;border-bottom:1px solid var(--ll-rule-strong);font:500 12px/1.45 var(--font-mono),ui-monospace,monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--ll-ink);background:0 0;margin-top:4px;padding:10px 14px 10px 0}.academy-lesson.al.ll-lesson .failure-table article p{border:0;border-bottom:1px solid var(--ll-rule);color:var(--ll-ink);margin:0;padding:12px 14px 12px 0}.academy-lesson.al.ll-lesson .engineering-depth-body>aside{border-top:2px solid var(--ll-ink);border-left:0;padding-top:18px}.academy-lesson.al.ll-lesson .engineering-depth-body>aside b{font:500 12px/1.45 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink);display:block}.academy-lesson.al.ll-lesson .engineering-depth-body>aside p{max-width:62ch;color:var(--ll-ink);margin:10px 0 0}.academy-lesson.al.ll-lesson .lesson-worked.lr-section{background:0 0;padding:0}.academy-lesson.al.ll-lesson .lesson-worked .lr-worked__scenario{max-width:var(--lr-measure);font-size:var(--lr-reading);color:var(--ll-ink);text-wrap:pretty;margin:0;line-height:1.62}.academy-lesson.al.ll-lesson .lesson-worked>.lr-worked__grid{grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:0 clamp(28px,3.4vw,56px);margin:clamp(30px,3vw,44px) 0 0;display:grid}.academy-lesson.al.ll-lesson .lr-worked__grid>:is(aside,div){border-top:1px solid var(--ll-rule-strong);background:0 0;border-radius:0;margin:0;padding:18px 0 0}.academy-lesson.al.ll-lesson .lr-worked__grid b,.academy-lesson.al.ll-lesson .lesson-worked footer b{font:500 12px/1.45 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink-faint);display:block}.academy-lesson.al.ll-lesson .lr-worked__grid ul{margin:14px 0 0;padding:0;list-style:none}.academy-lesson.al.ll-lesson .lr-worked__grid ol{counter-reset:lr-step;background:0 0;border-radius:0;margin:14px 0 0;padding:0;list-style:none}.academy-lesson.al.ll-lesson .lr-worked__grid li{border-bottom:1px solid var(--ll-rule);color:var(--ll-ink);text-wrap:pretty;margin:0;padding:11px 0;font-size:16px;line-height:1.55}.academy-lesson.al.ll-lesson .lr-worked__grid ol li{counter-increment:lr-step;grid-template-columns:34px minmax(0,1fr);display:grid}.academy-lesson.al.ll-lesson .lr-worked__grid ol li:before{content:counter(lr-step,decimal-leading-zero);font:500 12px/1.4 var(--font-mono),ui-monospace,monospace;color:var(--ll-ink-faint);padding-top:3px}.academy-lesson.al.ll-lesson .lesson-worked>footer{border:0;border-left:3px solid var(--ll-signal);max-width:48em;color:var(--ll-ink);background:0 0;border-radius:0;margin:clamp(26px,2.6vw,36px) 0 0;padding:4px 0 4px 22px}.academy-lesson.al.ll-lesson .lesson-worked>footer b{color:var(--ll-ink)}.academy-lesson.al.ll-lesson .lesson-worked>footer p{color:var(--ll-ink);text-wrap:pretty;margin:10px 0 0;font-size:clamp(18px,1.35vw,20px);line-height:1.55}.academy-lesson.al.ll-lesson .lesson-misconception.lr-section{color:var(--ll-ink);background:0 0;padding:0}.academy-lesson.al.ll-lesson .lesson-misconception blockquote{letter-spacing:-.04em;max-width:22ch;color:var(--ll-ink-soft);text-wrap:balance;margin:0;padding:0;font-size:clamp(34px,3.6vw,58px);font-weight:250;line-height:1.02;text-decoration:none}.academy-lesson.al.ll-lesson .lesson-misconception blockquote p{margin:0;-webkit-text-decoration:line-through #1215138c;text-decoration:line-through #1215138c;text-decoration-thickness:1px}.academy-lesson.al.ll-lesson .lesson-misconception .lr-correction{border-top:2px solid var(--ll-ink);max-width:40em;margin:clamp(26px,2.6vw,38px) 0 0;padding:18px 0 0}.academy-lesson.al.ll-lesson .lr-correction b{color:var(--ll-ink);display:block}.academy-lesson.al.ll-lesson .lr-correction p{font-size:var(--lr-reading);color:var(--ll-ink);text-wrap:pretty;border:0;margin:12px 0 0;padding:0;line-height:1.6}.academy-lesson.al.ll-lesson .lr-check{margin:0 0 var(--lr-section-gap);background:var(--ll-paper);box-shadow:0 0 0 100vmax var(--ll-paper);clip-path:inset(0 -100vmax);position:relative}.academy-lesson.al.ll-lesson :is(.lesson-check,.lesson-check-result){color:var(--ll-ink);background:0 0;border:0;padding:clamp(64px,6.4vw,104px) 0}.academy-lesson.al.ll-lesson .lesson-check>header,.academy-lesson.al.ll-lesson .lesson-check-result>header{color:var(--ll-ink);background:0 0;border-radius:0;padding:0}.academy-lesson.al.ll-lesson .lesson-check>header>span,.academy-lesson.al.ll-lesson .lesson-check-result>header>span{border-bottom:1px solid var(--ll-rule);font:500 12px/1.45 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink-faint);align-items:center;gap:18px;margin:0 0 clamp(22px,2.2vw,32px);padding:0 0 14px;display:flex}.academy-lesson.al.ll-lesson .lesson-check>header>span:before,.academy-lesson.al.ll-lesson .lesson-check-result>header>span:before{content:"07";color:var(--ll-signal-deep)}.academy-lesson.al.ll-lesson .lesson-check>header p{max-width:52ch;color:var(--ll-ink-soft);margin:0;font-size:16px;line-height:1.6}.academy-lesson.al.ll-lesson .lesson-check>article{border:0;border-top:1px solid var(--ll-rule-strong);background:0 0;border-radius:0;margin:0;padding:clamp(26px,2.6vw,36px) 0}.academy-lesson.al.ll-lesson .lesson-check>header+article{margin-top:clamp(34px,3.4vw,48px)}.academy-lesson.al.ll-lesson .lesson-check>article>small{font:500 12px/1.5 var(--font-mono),ui-monospace,monospace;letter-spacing:.1em;color:var(--ll-ink-faint)}.academy-lesson.al.ll-lesson .lesson-check h3{letter-spacing:-.022em;max-width:34ch;color:var(--ll-ink);text-wrap:balance;margin:12px 0 22px;font-size:clamp(21px,1.8vw,27px);font-weight:400;line-height:1.2}.academy-lesson.al.ll-lesson .lesson-check>article>div{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.academy-lesson.al.ll-lesson .lesson-check>article>div button{border:1px solid var(--ll-rule-strong);min-height:64px;color:var(--ll-ink);text-align:left;box-shadow:none;background:0 0;border-radius:0;grid-template-columns:26px minmax(0,1fr);align-items:start;gap:10px;padding:15px 16px;font-size:15px;line-height:1.45;transition:background-color .2s,border-color .2s,color .2s;display:grid}.academy-lesson.al.ll-lesson .lesson-check>article>div button:hover{border-color:var(--ll-ink);background:#12151308}.academy-lesson.al.ll-lesson .lesson-check>article>div button b{font:500 13px/1.45 var(--font-mono),ui-monospace,monospace;color:var(--ll-ink-faint)}.academy-lesson.al.ll-lesson .lesson-check>article>div button.selected{border-color:var(--ll-ink);background:var(--ll-ink);color:var(--ll-light);box-shadow:none}.academy-lesson.al.ll-lesson .lesson-check>article>div button.selected b{color:var(--ll-signal)}.academy-lesson.al.ll-lesson .lesson-check fieldset{border:0;flex-wrap:wrap;gap:8px;margin:18px 0 0;padding:0;display:flex}.academy-lesson.al.ll-lesson .lesson-check legend{font:500 12px/1.5 var(--font-mono),ui-monospace,monospace;letter-spacing:.1em;text-transform:uppercase;color:var(--ll-ink-faint);margin:0 0 10px;padding:0}.academy-lesson.al.ll-lesson .lesson-check label{border:1px solid var(--ll-rule);min-height:44px;color:var(--ll-ink);cursor:pointer;background:0 0;border-radius:0;align-items:center;gap:9px;padding:8px 14px 8px 12px;font-size:14px;transition:border-color .2s;display:flex}.academy-lesson.al.ll-lesson .lesson-check label:hover{border-color:var(--ll-ink)}.academy-lesson.al.ll-lesson .lesson-check label:has(input:checked){border-color:var(--ll-ink)}.academy-lesson.al.ll-lesson .lesson-check label input{width:18px;height:18px;accent-color:var(--ll-ink);margin:0}.academy-lesson.al.ll-lesson .lesson-check label:has(input:focus-visible){outline:3px solid var(--ll-ink);outline-offset:2px}.academy-lesson.al.ll-lesson :is(.lesson-check,.lesson-check-result)>footer{border-top:1px solid var(--ll-rule-strong);background:0 0;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px 24px;padding:22px 0 0;display:flex}.academy-lesson.al.ll-lesson .lesson-check>footer span{color:var(--ll-ink-soft);font-size:14px;line-height:1.5}.academy-lesson.al.ll-lesson .lesson-check>footer button,.academy-lesson.al.ll-lesson .lesson-check-result>footer>*{background:var(--ll-signal);color:#111512;cursor:pointer;border:1px solid #0000;border-radius:0;justify-content:center;align-items:center;gap:16px;min-height:52px;padding:0 22px;font-size:14px;font-weight:650;text-decoration:none;transition:background-color .2s,border-color .2s,opacity .2s;display:inline-flex}.academy-lesson.al.ll-lesson .lesson-check>footer button:hover:not(:disabled){background:var(--ll-signal-hot)}.academy-lesson.al.ll-lesson .lesson-check>footer button:disabled{border-color:var(--ll-rule-strong);color:var(--ll-ink-soft);opacity:1;cursor:not-allowed;background:0 0}.academy-lesson.al.ll-lesson .lesson-check-result>header>strong{border-bottom:3px solid var(--ll-signal);letter-spacing:-.05em;width:max-content;color:var(--ll-ink);font-variant-numeric:tabular-nums;margin:0 0 18px;padding-bottom:10px;font-size:clamp(64px,7vw,104px);font-weight:250;line-height:.9;display:block}.academy-lesson.al.ll-lesson .lesson-check-result>header h2{margin-bottom:14px}.academy-lesson.al.ll-lesson .lesson-check-result>header p{max-width:60ch;color:var(--ll-ink-soft);margin:0;font-size:16px;line-height:1.6}.academy-lesson.al.ll-lesson .lesson-check-result>div{border-bottom:1px solid var(--ll-rule);margin:clamp(30px,3vw,44px) 0;padding:0}.academy-lesson.al.ll-lesson .lesson-check-result article{border:0;border-top:1px solid var(--ll-rule);border-left:3px solid var(--ll-ink);background:0 0;border-radius:0;margin:0;padding:22px 0 22px 20px}.academy-lesson.al.ll-lesson .lesson-check-result article.review{border-left-color:#a8622f}.academy-lesson.al.ll-lesson .lesson-check-result article.priority-review{border-left-width:5px}.academy-lesson.al.ll-lesson .lesson-check-result article>b{font:500 12px/1.5 var(--font-mono),ui-monospace,monospace;letter-spacing:.12em;color:var(--ll-ink)}.academy-lesson.al.ll-lesson .lesson-check-result article h3{color:var(--ll-ink);margin:8px 0 10px;font-size:clamp(18px,1.4vw,21px);font-weight:420;line-height:1.3}.academy-lesson.al.ll-lesson .lesson-check-result article p{max-width:64ch;color:var(--ll-ink-soft);font-size:15px;line-height:1.6}.academy-lesson.al.ll-lesson .lesson-check-result article small{color:var(--ll-ink-soft);font-size:13px;line-height:1.55;display:block}.academy-lesson.al.ll-lesson .lesson-check-result>footer{justify-content:flex-start}.academy-lesson.al.ll-lesson .lesson-check-result>footer>button{border-color:var(--ll-rule-strong);color:var(--ll-ink);background:0 0}.academy-lesson.al.ll-lesson .lesson-check-result>footer>button:hover{border-color:var(--ll-ink)}.academy-lesson.al.ll-lesson .lesson-reference.lr-section{background:0 0;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:clamp(36px,5vw,88px);margin-bottom:0;display:grid}.academy-lesson.al.ll-lesson .lesson-reference>:is(div,aside){color:var(--ll-ink);background:0 0;border-radius:0;padding:0}.academy-lesson.al.ll-lesson .lesson-reference .lr-sources__note{max-width:56ch;color:var(--ll-ink-soft);margin:0 0 26px;font-size:15px;line-height:1.6}.academy-lesson.al.ll-lesson .lr-bibliography{border-bottom:1px solid var(--ll-rule);margin:0;padding:0;list-style:none}.academy-lesson.al.ll-lesson .lr-bibliography a{border-top:1px solid var(--ll-rule);color:var(--ll-ink);grid-template-columns:40px minmax(0,1fr) auto;align-items:start;gap:6px 16px;padding:18px 0;text-decoration:none;transition:background-color .2s;display:grid}.academy-lesson.al.ll-lesson .lr-bibliography a:hover{background:#12151309}.academy-lesson.al.ll-lesson .lr-bibliography a>b{color:var(--ll-ink-faint);padding-top:3px}.academy-lesson.al.ll-lesson .lr-bibliography a>span{font:inherit;letter-spacing:0;text-transform:none;color:inherit;gap:4px;display:grid}.academy-lesson.al.ll-lesson .lr-bibliography strong{letter-spacing:-.005em;color:var(--ll-ink);font-size:16px;font-weight:550;line-height:1.35}.academy-lesson.al.ll-lesson .lr-bibliography small{font:500 12px/1.5 var(--font-mono),ui-monospace,monospace;letter-spacing:.06em;color:var(--ll-ink-faint)}.academy-lesson.al.ll-lesson .lr-bibliography p{color:var(--ll-ink-soft);text-wrap:pretty;margin:2px 0 0;font-size:14.5px;line-height:1.55}.academy-lesson.al.ll-lesson .lr-bibliography i{white-space:nowrap;color:var(--ll-ink);padding-top:3px;font-size:13px;font-style:normal;font-weight:600}.academy-lesson.al.ll-lesson .lesson-reference .lesson-paper-link{color:var(--ll-ink);background:0 0;border-radius:0;margin-top:24px;padding:0;font-size:14px;font-weight:600;display:inline-flex}.academy-lesson.al.ll-lesson .lesson-reference .lesson-paper-link span{font:inherit;letter-spacing:0;color:inherit}.academy-lesson.al.ll-lesson .lr-glossary{align-self:start;padding-top:0}.academy-lesson.al.ll-lesson .lr-glossary>span{border-bottom:1px solid var(--ll-rule);font:500 12px/1.45 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink-faint);padding:0 0 14px;display:block}.academy-lesson.al.ll-lesson .lr-glossary dl{margin:0}.academy-lesson.al.ll-lesson .lr-glossary dl>div{border-bottom:1px solid var(--ll-rule);padding:16px 0}.academy-lesson.al.ll-lesson .lr-glossary dt{color:var(--ll-ink);font-size:16px;font-weight:600;line-height:1.3}.academy-lesson.al.ll-lesson .lr-glossary dd{color:var(--ll-ink-soft);text-wrap:pretty;margin:6px 0 0;font-size:14.5px;line-height:1.55}.academy-lesson.al.ll-lesson .lesson-reference .lr-glossary>a{border-bottom:1px solid var(--ll-rule-strong);min-height:48px;color:var(--ll-ink);align-items:center;gap:10px;margin-top:10px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.academy-lesson.al.ll-lesson .lesson-reference .lr-glossary>a span{font:inherit;letter-spacing:0;color:inherit}.academy-lesson.al.ll-lesson .lr-feedback{background:var(--ll-stone)}.academy-lesson.al.ll-lesson .lr-feedback .content-feedback{padding:clamp(56px,6vw,96px) var(--lr-inline);border-top:1px solid var(--ll-rule);background:var(--ll-stone);color:var(--ll-ink);grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px clamp(32px,5vw,96px)}.academy-lesson.al.ll-lesson .lr-feedback .content-feedback>div:first-child>span{font:500 12px/1.45 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink-faint)}.academy-lesson.al.ll-lesson .lr-feedback .content-feedback h2{letter-spacing:-.036em;max-width:22ch;color:var(--ll-ink);margin-top:16px;font-size:clamp(28px,2.6vw,40px);font-weight:300;line-height:1.05}.academy-lesson.al.ll-lesson .lr-feedback .content-feedback :is(p,small,span){color:var(--ll-ink-soft)}.academy-lesson.al.ll-lesson .lr-feedback .feedback-actions button{border:1px solid var(--ll-rule-strong);min-height:88px;color:var(--ll-ink);background:0 0;border-radius:0;transform:none}.academy-lesson.al.ll-lesson .lr-feedback .feedback-actions button:hover{border-color:var(--ll-ink);transform:none}.academy-lesson.al.ll-lesson .lr-feedback .feedback-actions b{font:500 12px/1.4 var(--font-mono),ui-monospace,monospace;letter-spacing:.14em;color:var(--ll-ink-faint)}.academy-lesson.al.ll-lesson .lr-feedback .feedback-actions button span{color:var(--ll-ink);font-size:15px;font-weight:550}.academy-lesson.al.ll-lesson .lr-feedback .feedback-thanks{border-top:2px solid var(--ll-ink);color:var(--ll-ink);background:0 0}.academy-lesson.al.ll-lesson .lr-feedback .feedback-thanks :is(strong,p){color:var(--ll-ink)}.academy-lesson.al.ll-lesson .lr-feedback .feedback-thanks p{font-size:13px}.academy-lesson.al.ll-lesson .lr-feedback .feedback-thanks :is(a,button){color:var(--ll-ink);font-size:13px}.academy-lesson.al.ll-lesson .lr-feedback .feedback-privacy{color:var(--ll-ink-soft);font-size:12px}.academy-lesson.al.ll-lesson .lr-close{padding:clamp(88px,10vw,168px) var(--lr-inline) clamp(80px,9vw,140px)}.academy-lesson.al.ll-lesson .lr-close:before{content:"";z-index:-1;pointer-events:none;background:radial-gradient(50% 70% at 84% 100%,#ffeec40f,#0000 70%);position:absolute;inset:0}.academy-lesson.al.ll-lesson .lr-close__inner{max-width:1100px}.academy-lesson.al.ll-lesson .lr-close__kicker{color:var(--ll-fg-soft);flex-wrap:wrap;align-items:center;gap:8px 0;margin:0 0 26px;display:flex}.academy-lesson.al.ll-lesson .lr-close__kicker span+span:before{content:"";vertical-align:middle;background:var(--ll-rule-strong);width:22px;height:1px;margin:0 14px;display:inline-block}.academy-lesson.al.ll-lesson .lr-close__kicker span:first-child{color:var(--ll-signal)}.academy-lesson.al.ll-lesson .lr-close h2{max-width:20ch}.academy-lesson.al.ll-lesson .lr-close .lesson-next{background:0 0;border:0;flex-flow:wrap;justify-content:flex-start;align-items:center;gap:14px 30px;margin:clamp(34px,3.6vw,52px) 0 0;padding:0;display:flex}.academy-lesson.al.ll-lesson .lr-close .lesson-next a{text-align:left;border:1px solid #0000;border-radius:0;min-height:52px;padding:0 22px;font-size:14px;font-weight:650;text-decoration:none}.academy-lesson.al.ll-lesson .lr-close .lesson-next a.ll-action--primary{background:var(--ll-signal);color:#111512}.academy-lesson.al.ll-lesson .lr-close .lesson-next a.ll-action--primary:hover{background:var(--ll-signal-hot)}.academy-lesson.al.ll-lesson .lr-close .lesson-next a.ll-action--line{border-width:0 0 1px;border-color:var(--ll-rule-strong);min-height:48px;color:var(--ll-fg);background:0 0;padding:0;font-weight:600}.academy-lesson.al.ll-lesson .lr-close .lesson-next a.ll-action--line:hover{border-color:var(--ll-fg)}@media (max-width:1000px){.academy-lesson.al.ll-lesson .lesson-shell.lr-shell{grid-template-columns:minmax(0,1fr);gap:0;padding-top:0}.academy-lesson.al.ll-lesson .lesson-index.lr-index{margin:0 calc(var(--lr-inline) * -1) clamp(48px,7vw,72px);padding:0 var(--lr-inline);border-bottom:1px solid var(--ll-rule);scrollbar-width:none;overscroll-behavior-x:contain;display:flex;position:static;overflow-x:auto}.academy-lesson.al.ll-lesson .lesson-index.lr-index::-webkit-scrollbar{display:none}.academy-lesson.al.ll-lesson .lesson-index.lr-index>span{display:none}.academy-lesson.al.ll-lesson .lesson-index.lr-index a,.academy-lesson.al.ll-lesson .lesson-index.lr-index a:last-child{border:0;border-right:1px solid var(--ll-rule);white-space:nowrap;flex:none;grid-template-columns:auto auto;gap:8px;min-height:52px;padding:0 16px;font-size:13.5px}.academy-lesson.al.ll-lesson .lesson-index.lr-index a:first-child{padding-left:0}.academy-lesson.al.ll-lesson .lesson-content.lr-content{max-width:none}.academy-lesson.al.ll-lesson .lesson-content>:is(section,div){scroll-margin-top:84px}}@media (max-width:900px){.academy-lesson.al.ll-lesson .lr-arrival{grid-template-columns:minmax(0,1fr);gap:0;padding:112px 20px 34px}.academy-lesson.al.ll-lesson .lr-arrival__monument{display:none}.academy-lesson.al.ll-lesson .lr-arrival__title{max-width:none;font-size:clamp(38px,10.6vw,56px);line-height:.98}.academy-lesson.al.ll-lesson .lr-arrival__kicker{flex-direction:column;align-items:flex-start;gap:6px}.academy-lesson.al.ll-lesson .lr-arrival__kicker span+span:before{display:none}.academy-lesson.al.ll-lesson .lr-arrival__data{grid-template-columns:repeat(3,minmax(0,1fr));gap:0 14px}.academy-lesson.al.ll-lesson .lr-arrival__data>.lr-arrival__audience{grid-template-columns:minmax(0,1fr)}.academy-lesson.al.ll-lesson .lesson-sequence.lr-spine{padding:6px 20px 40px}.academy-lesson.al.ll-lesson .lr-spine ol{grid-template-columns:minmax(0,1fr);gap:0}.academy-lesson.al.ll-lesson .lr-spine ol:before{width:1px;height:auto;inset:22px auto 22px 7px}.academy-lesson.al.ll-lesson .lesson-sequence.lr-spine a{grid-template-columns:34px minmax(0,1fr);align-items:center;gap:0 4px;min-height:44px;padding:6px 0 6px 30px}.academy-lesson.al.ll-lesson .lr-spine a>i{margin-top:-7.5px;top:50%}.academy-lesson.al.ll-lesson .lesson-sequence.lr-spine a span{font-size:15px}.academy-lesson.al.ll-lesson .lesson-shell.lr-shell{--lr-inline:20px;padding-left:20px;padding-right:20px}.academy-lesson.al.ll-lesson .lr-steps li{grid-template-columns:40px minmax(0,1fr);gap:8px 12px}.academy-lesson.al.ll-lesson .lr-steps li>div{grid-column:2}.academy-lesson.al.ll-lesson .lr-objectives li{grid-template-columns:40px minmax(0,1fr)}.academy-lesson.al.ll-lesson .lesson-technical-visual>figcaption{grid-template-columns:minmax(0,1fr)}.academy-lesson.al.ll-lesson .lr-plate{margin-left:-10px;margin-right:-10px;padding:12px 10px}.academy-lesson.al.ll-lesson .engineering-depth.lr-depth .engineering-depth-body{grid-template-columns:minmax(0,1fr)}.academy-lesson.al.ll-lesson .lesson-worked>.lr-worked__grid{grid-template-columns:minmax(0,1fr);gap:28px}.academy-lesson.al.ll-lesson .lesson-check>article>div{grid-template-columns:minmax(0,1fr)}.academy-lesson.al.ll-lesson .lesson-check>article>div button{min-height:56px}.academy-lesson.al.ll-lesson :is(.lesson-check,.lesson-check-result)>footer{flex-direction:column;align-items:stretch}.academy-lesson.al.ll-lesson .lesson-check-result>footer>*{justify-content:space-between}.academy-lesson.al.ll-lesson .lesson-reference.lr-section{grid-template-columns:minmax(0,1fr);gap:56px}.academy-lesson.al.ll-lesson .lr-bibliography a{grid-template-columns:32px minmax(0,1fr);gap:6px 12px}.academy-lesson.al.ll-lesson .lr-bibliography i{grid-column:2}.academy-lesson.al.ll-lesson .lr-feedback .content-feedback{grid-template-columns:minmax(0,1fr);padding:56px 20px}.academy-lesson.al.ll-lesson .lr-feedback .feedback-privacy{grid-column:1}.academy-lesson.al.ll-lesson .lr-close{padding:80px 20px 88px}.academy-lesson.al.ll-lesson .lr-close__kicker{flex-direction:column;align-items:flex-start;gap:6px}.academy-lesson.al.ll-lesson .lr-close__kicker span+span:before{display:none}.academy-lesson.al.ll-lesson .lr-close .lesson-next{flex-direction:column;align-items:stretch}.academy-lesson.al.ll-lesson .lr-close .lesson-next a.ll-action--primary{justify-content:space-between}.academy-lesson.al.ll-lesson .lr-close .lesson-next a.ll-action--line{align-self:flex-start}}@media (max-width:760px){.academy-lesson.al.ll-lesson .failure-table>div>header{display:none}.academy-lesson.al.ll-lesson .failure-table article{border-bottom:1px solid var(--ll-rule);grid-template-columns:minmax(0,1fr);padding:6px 0 10px}.academy-lesson.al.ll-lesson .failure-table article p{border:0;padding:8px 0 0}.academy-lesson.al.ll-lesson .failure-table article p:before{font:500 11px/1.4 var(--font-mono),ui-monospace,monospace;letter-spacing:.1em;color:var(--ll-ink-faint);margin-bottom:4px}}@media (prefers-reduced-motion:reduce){.academy-lesson.al.ll-lesson :is(.lesson-sequence.lr-spine a,.lesson-index.lr-index a,.lesson-check>article>div button,.lesson-check label,.lr-bibliography a,.engineering-depth.lr-depth summary>i){transition:none}}@media (forced-colors:active){.academy-lesson.al.ll-lesson .lr-spine a>i{forced-color-adjust:none}.academy-lesson.al.ll-lesson .lesson-check>article>div button.selected{border:2px solid highlight}}@media print{.academy-lesson.al.ll-lesson{background:#fff}.academy-lesson.al.ll-lesson :is(.lr-opening,.lr-shell,.lr-check){color:#000;box-shadow:none;background:#fff}.academy-lesson.al.ll-lesson :is(.lesson-index,.lesson-sequence,.lr-feedback,.lr-close){display:none}}