/* course-module — academic but friendly */
.tpl-course-module{
  --bg:#fbfaf6;--bg-soft:#f4f1e8;--surface:#ffffff;--surface-2:#f6f3ea;
  --border:rgba(60,45,20,.12);--border-strong:rgba(60,45,20,.24);
  --text-1:#2a2418;--text-2:#5a5140;--text-3:#8a7f68;
  --accent:#2d7d6e;--accent-2:#d88a3a;--accent-3:#c4593f;
  --grad:linear-gradient(135deg,#2d7d6e,#4ea893);
  --radius:14px;--radius-lg:20px;
  --shadow:0 12px 30px rgba(60,45,20,.07);
  font-family:'Inter','Noto Sans SC',sans-serif;
}
.tpl-course-module .slide{padding:64px 80px;background:var(--bg);display:grid;grid-template-columns:260px 1fr;gap:56px;align-content:start}
.tpl-course-module .slide.full{grid-template-columns:1fr;display:flex;flex-direction:column;justify-content:center}
.tpl-course-module .sidebar{border-right:1px solid var(--border);padding-right:32px;position:relative}
.tpl-course-module .sidebar .brand{font-family:'Playfair Display',serif;font-size:22px;font-weight:700;color:var(--accent)}
.tpl-course-module .sidebar .brand::before{content:"✦ ";color:var(--accent-2)}
.tpl-course-module .sidebar h5{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--text-3);margin:32px 0 12px}
.tpl-course-module .obj-list{list-style:none;padding:0;margin:0;font-size:13px;color:var(--text-2);line-height:1.5}
.tpl-course-module .obj-list li{padding:8px 0 8px 22px;position:relative;border-bottom:1px dashed var(--border)}
.tpl-course-module .obj-list li::before{content:"○";position:absolute;left:0;top:8px;color:var(--accent)}
.tpl-course-module .obj-list li.done::before{content:"●";color:var(--accent)}
.tpl-course-module .obj-list li.current{color:var(--text-1);font-weight:700}
.tpl-course-module .obj-list li.current::before{content:"▸";color:var(--accent-2)}
.tpl-course-module .main{min-width:0}
.tpl-course-module .h1{font-family:'Playfair Display',serif;font-size:72px;line-height:1.02;font-weight:800;letter-spacing:-.02em;color:var(--text-1)}
.tpl-course-module .h2{font-family:'Playfair Display',serif;font-size:48px;line-height:1.1;font-weight:700;letter-spacing:-.015em;color:var(--text-1)}
.tpl-course-module h3,.tpl-course-module h4{color:var(--text-1)}
.tpl-course-module .kicker{color:var(--accent-2);font-size:12px;font-weight:700;letter-spacing:.14em}
.tpl-course-module .lede{font-size:20px;color:var(--text-2);line-height:1.7}
.tpl-course-module .callout{border-left:4px solid var(--accent-2);background:var(--surface-2);padding:20px 24px;border-radius:0 var(--radius) var(--radius) 0;margin-top:24px}
.tpl-course-module .callout b{color:var(--accent-2)}
.tpl-course-module .concept-box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px 26px;box-shadow:var(--shadow)}
.tpl-course-module .concept-box h4{margin-top:0;color:var(--accent)}
.tpl-course-module .exercise{background:#fff8ed;border:1.5px dashed var(--accent-2);border-radius:var(--radius);padding:24px 28px}
.tpl-course-module .exercise::before{content:"✎ Exercise";display:block;font-size:12px;font-weight:700;letter-spacing:.12em;color:var(--accent-2);margin-bottom:10px;text-transform:uppercase}
.tpl-course-module .code{background:#2a2418;color:#f4f1e8;border-radius:var(--radius);padding:20px 24px;font-family:'JetBrains Mono',monospace;font-size:14px;line-height:1.7;overflow:auto}
.tpl-course-module .code .cmt{color:#8a7f68;font-style:italic}
.tpl-course-module .code .kw{color:#e8a770}
.tpl-course-module .code .str{color:#8ec6b2}
.tpl-course-module .mcq{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px;margin-bottom:10px;display:flex;gap:14px;align-items:flex-start;cursor:pointer}
.tpl-course-module .mcq .letter{flex:none;width:28px;height:28px;border-radius:50%;border:2px solid var(--text-3);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:var(--text-2)}
.tpl-course-module .mcq.correct{border-color:var(--accent);background:rgba(45,125,110,.06)}
.tpl-course-module .mcq.correct .letter{border-color:var(--accent);background:var(--accent);color:#fff}
.tpl-course-module .pill-academic{display:inline-block;padding:4px 12px;border-radius:4px;background:var(--surface-2);border:1px solid var(--border);font-size:12px;color:var(--text-2);font-family:'JetBrains Mono',monospace}
.tpl-course-module .slide.full .h1{font-size:88px}
.tpl-course-module .deck-footer{color:var(--text-3)}

/* Lesson 02 custom visual language: paper, signal, and system traces. */
.tpl-course-module{--signal:#b85d3d;--signal-soft:#fff0e6;--ink:#2a2418;--mint:#2d7d6e}
.tpl-course-module em{color:var(--signal);font-style:normal}
.tpl-course-module a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.tpl-course-module .small{font-size:13px;line-height:1.55}
.tpl-course-module .accent-box{border-color:rgba(45,125,110,.35);background:rgba(45,125,110,.05)}
.tpl-course-module .section-slide{display:flex;flex-direction:column;justify-content:center;align-content:start;padding-left:120px;background:linear-gradient(120deg,var(--bg),var(--bg-soft))}
.tpl-course-module .section-no{font:700 20px 'JetBrains Mono',monospace;color:var(--signal);letter-spacing:.12em}
.tpl-course-module .section-slide .h1{font-size:82px}
.tpl-course-module .compare-band{display:grid;grid-template-columns:1fr 100px 1fr;align-items:center;gap:28px}
.tpl-course-module .compare-band>div:not(.arrow-big){padding:30px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface)}
.tpl-course-module .compare-band .frontier{border-color:rgba(45,125,110,.45);background:rgba(45,125,110,.06)}
.tpl-course-module .compare-band strong{display:block;font:700 32px 'Playfair Display',serif;color:var(--text-1);margin:10px 0 5px}
.tpl-course-module .compare-band p{margin:0;color:var(--text-2)}
.tpl-course-module .compare-label,.tpl-course-module .rep-tag,.tpl-course-module .case-no{font:700 11px 'JetBrains Mono',monospace;letter-spacing:.14em;color:var(--text-3)}
.tpl-course-module .arrow-big,.tpl-course-module .rep-arrow,.tpl-course-module .shortcut-arrow{font-size:42px;color:var(--signal);text-align:center}
.tpl-course-module .equation-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.tpl-course-module .equation-grid>div{display:grid;grid-template-columns:66px 1fr;grid-template-rows:auto auto;align-items:center;padding:22px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius)}
.tpl-course-module .eq-mark{grid-row:1 / span 2;font:800 48px 'Playfair Display',serif;color:var(--signal)}
.tpl-course-module .equation-grid strong{font-size:20px}.tpl-course-module .equation-grid small{color:var(--text-3);font-size:12px}
.tpl-course-module .step-row{display:grid;grid-template-columns:50px 1fr;gap:18px;align-items:center;border-bottom:1px dashed var(--border);padding:18px 0}
.tpl-course-module .step-row>b{font:700 24px 'JetBrains Mono',monospace;color:var(--signal)}
.tpl-course-module .step-row strong{display:block;font-size:20px;color:var(--text-1)}.tpl-course-module .step-row small{display:block;margin-top:4px;color:var(--text-3)}
.tpl-course-module .spec-canvas{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.tpl-course-module .spec-canvas>div{min-height:115px;padding:22px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);display:flex;flex-direction:column;justify-content:space-between}
.tpl-course-module .spec-canvas span{font:700 11px 'JetBrains Mono',monospace;color:var(--signal);letter-spacing:.14em}.tpl-course-module .spec-canvas strong{font-size:21px;color:var(--text-1)}
.tpl-course-module .embedding-stage{height:280px;position:relative;overflow:hidden;border:1px solid var(--border);border-radius:var(--radius-lg);background:radial-gradient(circle at 30% 45%,rgba(45,125,110,.12),transparent 26%),radial-gradient(circle at 72% 38%,rgba(184,93,61,.13),transparent 25%),var(--surface)}
.tpl-course-module .embedding-stage .axis{position:absolute;background:var(--border-strong)}.tpl-course-module .embedding-stage .x{height:1px;left:50px;right:40px;top:185px}.tpl-course-module .embedding-stage .y{width:1px;top:35px;bottom:35px;left:300px;transform:rotate(18deg)}
.tpl-course-module .cluster{position:absolute;width:115px;height:90px}.tpl-course-module .cluster i,.tpl-course-module .mini-space i{position:absolute;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(45,125,110,.08)}.tpl-course-module .cluster i:nth-child(1){left:15px;top:22px}.tpl-course-module .cluster i:nth-child(2){left:45px;top:8px}.tpl-course-module .cluster i:nth-child(3){left:78px;top:30px}.tpl-course-module .cluster i:nth-child(4){left:35px;top:55px}.tpl-course-module .cluster i:nth-child(5){left:90px;top:62px}.tpl-course-module .cluster.c1{left:95px;top:78px}.tpl-course-module .cluster.c2{left:350px;top:105px}.tpl-course-module .cluster.c2 i{background:var(--signal)}.tpl-course-module .cluster.c3{right:100px;top:60px}.tpl-course-module .cluster.c3 i{background:#7c6aa6}.tpl-course-module .embedding-stage .label{position:absolute;font-size:12px;color:var(--text-3)}.tpl-course-module .embedding-stage .l1{left:80px;top:48px}.tpl-course-module .embedding-stage .l2{left:350px;top:198px}.tpl-course-module .embedding-stage .l3{right:70px;top:38px}
.tpl-course-module .source-line{font-size:12px;color:var(--text-3);margin-top:12px}
.tpl-course-module .representation-compare{display:grid;grid-template-columns:1fr 80px 1fr;gap:24px;align-items:center}.tpl-course-module .rep-card{padding:26px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface)}.tpl-course-module .rep-card.frontier{background:rgba(45,125,110,.06);border-color:rgba(45,125,110,.35)}.tpl-course-module .rep-card h3{font:700 30px 'Playfair Display',serif;margin:10px 0 6px}.tpl-course-module .rep-card p{color:var(--text-3);margin:0 0 18px}.tpl-course-module .mini-matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:5px}.tpl-course-module .mini-matrix i{height:20px;background:var(--signal-soft);border:1px solid rgba(184,93,61,.25)}.tpl-course-module .mini-matrix i:nth-child(2n){background:rgba(45,125,110,.10)}.tpl-course-module .mini-space{height:74px;position:relative;background:radial-gradient(circle at 30% 45%,rgba(45,125,110,.16),transparent 26%),radial-gradient(circle at 75% 55%,rgba(184,93,61,.18),transparent 25%);border-radius:10px}.tpl-course-module .mini-space i:nth-child(1){left:20%;top:20%}.tpl-course-module .mini-space i:nth-child(2){left:31%;top:42%}.tpl-course-module .mini-space i:nth-child(3){left:40%;top:30%}.tpl-course-module .mini-space i:nth-child(4){left:70%;top:55%;background:var(--signal)}.tpl-course-module .mini-space i:nth-child(5){left:78%;top:35%;background:var(--signal)}.tpl-course-module .mini-space i:nth-child(6){left:84%;top:65%;background:var(--signal)}
.tpl-course-module .bias-stack{display:flex;flex-direction:column;gap:7px}.tpl-course-module .bias{padding:16px 22px;border-radius:8px;color:var(--text-1);font-weight:700}.tpl-course-module .b1{background:rgba(184,93,61,.15);margin-left:12%}.tpl-course-module .b2{background:rgba(124,106,166,.15);margin-left:8%}.tpl-course-module .b3{background:rgba(45,125,110,.15);margin-left:4%}.tpl-course-module .b4{background:rgba(216,138,58,.16)}.tpl-course-module .b5{background:rgba(60,45,20,.08);margin-right:12%}
.tpl-course-module .dial-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.tpl-course-module .dial{border:1px solid var(--border);background:var(--surface);border-radius:var(--radius);padding:18px;min-height:120px;display:flex;flex-direction:column;justify-content:space-between}.tpl-course-module .dial span{font:700 11px 'JetBrains Mono',monospace;color:var(--text-3)}.tpl-course-module .dial b{font:700 40px 'Playfair Display',serif;color:var(--signal)}.tpl-course-module .dial small{color:var(--text-3)}
.tpl-course-module .chart-shell{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px}.tpl-course-module .chart-shell svg{width:100%;height:250px}.tpl-course-module .chart-axis{stroke:var(--border-strong);stroke-width:1}.tpl-course-module .curve{fill:none;stroke-width:5;stroke-linecap:round}.tpl-course-module .curve.train{stroke:var(--accent)}.tpl-course-module .curve.val{stroke:var(--signal)}.tpl-course-module .marker-line{stroke:var(--signal);stroke-dasharray:5 6;opacity:.6}.tpl-course-module .chart-shell text{font:12px 'JetBrains Mono',monospace;fill:var(--text-3)}.tpl-course-module .train-text{fill:var(--accent)!important}.tpl-course-module .val-text{fill:var(--signal)!important}.tpl-course-module .legend-row{font-size:12px;color:var(--text-3);display:flex;gap:7px;align-items:center;justify-content:flex-end;margin-top:8px}.tpl-course-module .legend-dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-left:12px}.tpl-course-module .train-dot{background:var(--accent)}.tpl-course-module .val-dot{background:var(--signal)}
.tpl-course-module .pipeline{display:grid;grid-template-columns:1fr 30px 1fr 30px 1fr 30px 1fr;align-items:center;gap:10px}.tpl-course-module .pipeline>div{padding:22px 18px;border:1px solid var(--border);background:var(--surface);border-radius:var(--radius);text-align:center}.tpl-course-module .pipeline b{display:block;font:700 22px 'Playfair Display',serif}.tpl-course-module .pipeline small{display:block;color:var(--text-3);line-height:1.4;margin-top:8px}.tpl-course-module .pipeline>i{font-size:24px;color:var(--signal);text-align:center}
.tpl-course-module .distribution-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.tpl-course-module .dist{padding:20px 15px;border-radius:var(--radius);min-height:130px;display:flex;flex-direction:column;justify-content:space-between}.tpl-course-module .dist span{font:700 11px 'JetBrains Mono',monospace;letter-spacing:.12em}.tpl-course-module .dist b{font:700 25px 'Playfair Display',serif}.tpl-course-module .dist small{color:var(--text-2)}.tpl-course-module .train-dist{background:rgba(45,125,110,.13)}.tpl-course-module .test-dist{background:rgba(124,106,166,.13)}.tpl-course-module .deploy-dist{background:rgba(216,138,58,.16)}.tpl-course-module .stress-dist{background:rgba(184,93,61,.15)}
.tpl-course-module .shortcut{display:grid;grid-template-columns:1fr 90px 1fr;gap:16px;align-items:center}.tpl-course-module .scene{height:190px;border-radius:var(--radius-lg);background:linear-gradient(145deg,rgba(45,125,110,.20),rgba(45,125,110,.04));border:1px solid rgba(45,125,110,.32);position:relative;overflow:hidden}.tpl-course-module .scene.wrong{background:linear-gradient(145deg,rgba(184,93,61,.20),rgba(184,93,61,.04));border-color:rgba(184,93,61,.36)}.tpl-course-module .scene .object{position:absolute;left:41%;top:34%;font:800 60px 'Playfair Display',serif;color:var(--accent)}.tpl-course-module .scene.wrong .object{color:var(--signal)}.tpl-course-module .scene .background{position:absolute;inset:auto 0 0;padding:18px;color:var(--text-3);font:700 12px 'JetBrains Mono',monospace;letter-spacing:.12em;text-transform:uppercase;text-align:center;background:rgba(255,255,255,.55)}.tpl-course-module .scene label{position:absolute;top:12px;left:14px;font:700 11px 'JetBrains Mono',monospace;color:var(--text-3)}.tpl-course-module .shortcut-arrow{text-align:center}.tpl-course-module .mini-note{border-top:3px solid var(--signal);padding:14px 0}.tpl-course-module .mini-note b{display:block;color:var(--text-1)}.tpl-course-module .mini-note small{color:var(--text-3)}
.tpl-course-module .scorecard{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--surface)}.tpl-course-module .scorecard>div{display:grid;grid-template-columns:1fr 1.6fr 1.3fr;gap:20px;padding:16px 20px;border-bottom:1px solid var(--border);align-items:center}.tpl-course-module .scorecard>div:last-child{border-bottom:0}.tpl-course-module .score-head{font:700 10px 'JetBrains Mono',monospace;letter-spacing:.12em;color:var(--text-3);background:var(--surface-2)}.tpl-course-module .scorecard b{color:var(--accent)}.tpl-course-module .scorecard span{color:var(--text-2)}.tpl-course-module .scorecard em{color:var(--text-3);font-style:normal;font-size:12px}
.tpl-course-module .trace{display:grid;grid-template-columns:1fr 30px 1fr 30px 1fr 30px 1fr;align-items:center;gap:8px}.tpl-course-module .trace>i{color:var(--text-3);text-align:center}.tpl-course-module .trace-node{padding:16px 12px;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);text-align:center}.tpl-course-module .trace-node span{display:block;font:700 11px 'JetBrains Mono',monospace;color:var(--text-3)}.tpl-course-module .trace-node b{display:block;margin-top:7px;color:var(--accent)}.tpl-course-module .trace-node.warn{background:rgba(216,138,58,.11);border-color:rgba(216,138,58,.35)}.tpl-course-module .trace-node.warn b{color:var(--accent-2)}.tpl-course-module .trace-node.bad{background:rgba(184,93,61,.11);border-color:rgba(184,93,61,.35)}.tpl-course-module .trace-node.bad b{color:var(--signal)}
.tpl-course-module .loop{height:245px;position:relative}.tpl-course-module .loop svg{position:absolute;inset:0;width:100%;height:100%}.tpl-course-module .loop svg path{fill:none;stroke:var(--border-strong);stroke-width:3;stroke-dasharray:8 8}.tpl-course-module .loop-node{position:absolute;z-index:1;padding:14px 20px;border-radius:30px;background:var(--surface);border:1px solid var(--border-strong);font:700 13px 'JetBrains Mono',monospace;color:var(--text-1);box-shadow:var(--shadow)}.tpl-course-module .n1{left:4%;top:35%}.tpl-course-module .n2{left:22%;top:6%}.tpl-course-module .n3{left:51%;top:4%}.tpl-course-module .n4{right:4%;top:35%}.tpl-course-module .n5{right:20%;bottom:5%}.tpl-course-module .n6{left:25%;bottom:3%;background:var(--signal-soft);border-color:rgba(184,93,61,.35);color:var(--signal)}
.tpl-course-module .case-grid{display:grid;grid-template-columns:1fr 80px 1fr;gap:24px;align-items:center}.tpl-course-module .case-grid>div:not(.case-divider){padding:28px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface)}.tpl-course-module .case-grid .frontier{border-color:rgba(45,125,110,.35);background:rgba(45,125,110,.06)}.tpl-course-module .case-grid h3{font:700 30px 'Playfair Display',serif;margin:12px 0 6px}.tpl-course-module .case-grid p{color:var(--text-2)}.tpl-course-module .case-grid ul{color:var(--text-3);line-height:1.8;padding-left:18px}.tpl-course-module .case-divider{text-align:center;font-size:38px;color:var(--signal)}
.tpl-course-module .question-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.tpl-course-module .question-grid>div{display:grid;grid-template-columns:42px 1fr;grid-template-rows:auto auto;align-items:center;border-bottom:1px dashed var(--border);padding:16px 0}.tpl-course-module .question-grid b{grid-row:1 / span 2;font:700 22px 'JetBrains Mono',monospace;color:var(--signal)}.tpl-course-module .question-grid span{font-weight:700;color:var(--text-1)}.tpl-course-module .question-grid small{color:var(--text-3);margin-top:4px}.tpl-course-module .good{color:var(--accent)}
@media (max-width:1000px){.tpl-course-module .slide{padding:45px 50px;grid-template-columns:200px 1fr;gap:32px}.tpl-course-module .h1,.tpl-course-module .slide.full .h1,.tpl-course-module .section-slide .h1{font-size:58px}.tpl-course-module .h2{font-size:38px}.tpl-course-module .section-slide{padding-left:70px}.tpl-course-module .compare-band,.tpl-course-module .case-grid{grid-template-columns:1fr}.tpl-course-module .arrow-big,.tpl-course-module .case-divider{transform:rotate(90deg)}.tpl-course-module .pipeline{grid-template-columns:1fr 1fr}.tpl-course-module .pipeline>i{display:none}.tpl-course-module .trace{grid-template-columns:1fr 1fr}.tpl-course-module .trace>i{display:none}}

/* Concrete model toolkit: AE, VAE, activations, and objective roles. */
.tpl-course-module .model-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.tpl-course-module .model-card{padding:24px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);min-height:170px}.tpl-course-module .model-card.frontier{background:rgba(45,125,110,.06);border-color:rgba(45,125,110,.35)}.tpl-course-module .model-card>span{font:800 34px 'Playfair Display',serif;color:var(--signal)}.tpl-course-module .model-card h3{font:700 23px 'Playfair Display',serif;margin:8px 0 5px}.tpl-course-module .model-card p{margin:0;color:var(--text-2)}.tpl-course-module .model-card small{display:block;margin-top:18px;color:var(--text-3)}
.tpl-course-module .ae-diagram,.tpl-course-module .vae-diagram{display:grid;grid-template-columns:1fr 28px 1.4fr 28px 1fr 28px 1.4fr 28px 1fr;align-items:center;gap:8px}.tpl-course-module .vae-diagram{grid-template-columns:1fr 28px 1.6fr 28px 1.7fr 28px 1fr}.tpl-course-module .ae-diagram>i,.tpl-course-module .vae-diagram>i{font-size:23px;color:var(--signal);text-align:center}.tpl-course-module .ae-block,.tpl-course-module .vae-params,.tpl-course-module .vae-sample,.tpl-course-module .ae-latent{padding:22px 12px;text-align:center;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface)}.tpl-course-module .ae-block b,.tpl-course-module .vae-params b{display:block;font:700 20px 'Playfair Display',serif;color:var(--text-1)}.tpl-course-module .ae-block small,.tpl-course-module .vae-params small,.tpl-course-module .vae-sample small,.tpl-course-module .ae-latent small{display:block;margin-top:6px;font-size:11px;color:var(--text-3)}.tpl-course-module .ae-latent{background:var(--signal-soft);border-color:rgba(184,93,61,.4)}.tpl-course-module .ae-latent span{display:block;font:800 38px 'Playfair Display',serif;color:var(--signal)}.tpl-course-module .vae-params{background:rgba(45,125,110,.08);border-color:rgba(45,125,110,.35)}.tpl-course-module .vae-sample{background:rgba(124,106,166,.10);border-color:rgba(124,106,166,.35)}.tpl-course-module .vae-sample span{display:block;font:700 17px 'JetBrains Mono',monospace;color:var(--text-1)}.tpl-course-module .formula{display:grid;grid-template-columns:auto 1fr;align-items:center;column-gap:16px;padding:20px 24px;border-left:4px solid var(--signal);background:var(--signal-soft);border-radius:0 var(--radius) var(--radius) 0}.tpl-course-module .formula span{font:700 18px 'JetBrains Mono',monospace;color:var(--signal)}.tpl-course-module .formula strong{font:700 22px 'Playfair Display',serif;color:var(--text-1)}.tpl-course-module .formula small{grid-column:2;color:var(--text-3);margin-top:5px}.tpl-course-module .vae-formula{border-left-color:var(--accent);background:rgba(45,125,110,.07)}.tpl-course-module .vae-formula span{color:var(--accent)}
.tpl-course-module .role-table{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--surface)}.tpl-course-module .role-table>div{display:grid;grid-template-columns:1fr 1.5fr 1.4fr;gap:18px;padding:17px 20px;border-bottom:1px solid var(--border);align-items:center}.tpl-course-module .role-table>div:last-child{border-bottom:0}.tpl-course-module .role-head{font:700 10px 'JetBrains Mono',monospace;letter-spacing:.12em;color:var(--text-3);background:var(--surface-2)}.tpl-course-module .role-table b{color:var(--accent)}.tpl-course-module .role-table span{color:var(--text-2)}.tpl-course-module .role-table em{font-style:normal;color:var(--text-3);font-size:12px}.tpl-course-module .activation-curves{display:grid;grid-template-columns:1fr 1fr;gap:16px}.tpl-course-module .activation-curves>div{padding:14px 18px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}.tpl-course-module .activation-curves svg{width:100%;height:95px;display:block}.tpl-course-module .activation-curves line{stroke:var(--border-strong);stroke-width:1}.tpl-course-module .activation-curves path{fill:none;stroke-width:5;stroke-linecap:round}.tpl-course-module .activation-curves .relu-line{stroke:var(--signal)}.tpl-course-module .activation-curves .tanh-line{stroke:var(--accent)}.tpl-course-module .activation-curves b{font-size:16px;color:var(--text-1)}.tpl-course-module .activation-curves small{display:block;color:var(--text-3);margin-top:4px}
@media (max-width:1000px){.tpl-course-module .model-cards{grid-template-columns:1fr}.tpl-course-module .ae-diagram,.tpl-course-module .vae-diagram{grid-template-columns:1fr;gap:5px}.tpl-course-module .ae-diagram>i,.tpl-course-module .vae-diagram>i{transform:rotate(90deg)}.tpl-course-module .role-table>div{grid-template-columns:1fr}.tpl-course-module .role-head{display:none}}

/* Additional model visualizations. */
.tpl-course-module .ae-visual{display:grid;grid-template-columns:1fr 55px 1fr 55px 1fr;gap:12px;align-items:center}.tpl-course-module .pixel-card{padding:18px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);text-align:center}.tpl-course-module .pixel-card>span{font:700 12px 'JetBrains Mono',monospace;color:var(--text-3)}.tpl-course-module .pixel-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;margin-top:14px}.tpl-course-module .pixel-grid i{height:28px;border-radius:4px;background:rgba(45,125,110,.24);border:1px solid rgba(45,125,110,.12)}.tpl-course-module .pixel-grid i:nth-child(3n){background:rgba(184,93,61,.46)}.tpl-course-module .pixel-grid i:nth-child(4n){background:rgba(124,106,166,.30)}.tpl-course-module .pixel-grid.reconstructed i{background:rgba(45,125,110,.16)}.tpl-course-module .pixel-grid.reconstructed i:nth-child(3n){background:rgba(184,93,61,.30)}.tpl-course-module .bottleneck{padding:24px 12px;border-radius:50%;aspect-ratio:1;background:var(--signal-soft);border:1px solid rgba(184,93,61,.35);display:flex;flex-direction:column;align-items:center;justify-content:center}.tpl-course-module .bottleneck span{font:800 42px 'Playfair Display',serif;color:var(--signal)}.tpl-course-module .bottleneck small{font-size:10px;color:var(--text-3);text-align:center}.tpl-course-module .code-bars{display:flex;gap:3px;margin-top:10px}.tpl-course-module .code-bars i{width:8px;height:4px;background:var(--signal);border-radius:3px}.tpl-course-module .visual-arrow{font-size:32px;text-align:center;color:var(--signal)}
.tpl-course-module .use-case-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.tpl-course-module .use-case{padding:24px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface)}.tpl-course-module .use-case.frontier{background:rgba(45,125,110,.06);border-color:rgba(45,125,110,.35)}.tpl-course-module .use-label{font:700 11px 'JetBrains Mono',monospace;color:var(--signal);letter-spacing:.12em}.tpl-course-module .mini-process{display:grid;grid-template-columns:1fr 30px 1fr;gap:8px;align-items:center;margin:24px 0 18px}.tpl-course-module .noise-box,.tpl-course-module .clean-box{padding:18px 8px;text-align:center;border-radius:9px;font:700 12px 'JetBrains Mono',monospace}.tpl-course-module .noise-box{background:rgba(184,93,61,.14);color:var(--signal)}.tpl-course-module .clean-box{background:rgba(45,125,110,.14);color:var(--accent)}.tpl-course-module .mini-process>b{color:var(--signal);text-align:center}.tpl-course-module .use-case p{color:var(--text-2);line-height:1.55}.tpl-course-module .recon-bars{height:110px;display:flex;justify-content:center;gap:60px;align-items:end;margin:20px 0 12px}.tpl-course-module .recon-bars>div{height:100%;display:flex;align-items:end;gap:6px;position:relative}.tpl-course-module .recon-bars i{display:block;width:14px;border-radius:4px 4px 0 0;background:var(--accent)}.tpl-course-module .recon-bars>div:nth-child(2) i:nth-child(3){background:var(--signal)}.tpl-course-module .recon-bars b{position:absolute;bottom:-20px;left:0;font-size:11px;color:var(--text-3);white-space:nowrap}
.tpl-course-module .latent-map{border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);padding:12px}.tpl-course-module .latent-map svg{width:100%;height:280px}.tpl-course-module .map-axis{stroke:var(--border-strong);stroke-width:1}.tpl-course-module .latent-blob{fill:rgba(45,125,110,.10);stroke:rgba(45,125,110,.3);stroke-width:2}.tpl-course-module .blob-b{fill:rgba(184,93,61,.10);stroke:rgba(184,93,61,.3)}.tpl-course-module .latent-points circle{fill:var(--accent)}.tpl-course-module .points-b circle{fill:var(--signal)}.tpl-course-module .interpolate{fill:none;stroke:#7c6aa6;stroke-width:3;stroke-dasharray:7 7}.tpl-course-module .latent-map text{font:12px 'JetBrains Mono',monospace;fill:var(--text-3)}.tpl-course-module .sample-dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:#7c6aa6;margin-left:14px}
.tpl-course-module .generation{display:grid;grid-template-columns:1fr 55px 1fr;gap:16px;align-items:center}.tpl-course-module .prior{padding:24px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);text-align:center}.tpl-course-module .prior>span{font:700 12px 'JetBrains Mono',monospace;color:var(--signal)}.tpl-course-module .normal-curve{height:100px;margin:15px 0;display:flex;align-items:end;justify-content:center;gap:7px}.tpl-course-module .normal-curve i{width:13px;border-radius:5px 5px 0 0;background:rgba(45,125,110,.52)}.tpl-course-module .normal-curve i:nth-child(1),.tpl-course-module .normal-curve i:nth-child(7){height:15%}.tpl-course-module .normal-curve i:nth-child(2),.tpl-course-module .normal-curve i:nth-child(6){height:35%}.tpl-course-module .normal-curve i:nth-child(3),.tpl-course-module .normal-curve i:nth-child(5){height:68%}.tpl-course-module .normal-curve i:nth-child(4){height:100%;background:var(--signal)}.tpl-course-module .prior small{color:var(--text-3)}.tpl-course-module .gen-arrow{font-size:34px;color:var(--signal);text-align:center}.tpl-course-module .gen-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:18px;border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border)}.tpl-course-module .gen-grid div{aspect-ratio:1;border-radius:8px;background:radial-gradient(circle at 35% 30%,rgba(184,93,61,.55),transparent 22%),radial-gradient(circle at 72% 68%,rgba(45,125,110,.45),transparent 26%),rgba(124,106,166,.16)}.tpl-course-module .gen-grid div:nth-child(2n){background:radial-gradient(circle at 60% 30%,rgba(45,125,110,.55),transparent 22%),radial-gradient(circle at 32% 72%,rgba(184,93,61,.42),transparent 26%),rgba(124,106,166,.16)}.tpl-course-module .gen-caption{grid-column:3;color:var(--text-3);font-size:12px;text-align:center}
.tpl-course-module .family-map{height:275px;position:relative}.tpl-course-module .family-map svg{position:absolute;inset:0;width:100%;height:100%}.tpl-course-module .family-map svg path{fill:none;stroke:var(--border-strong);stroke-width:2;stroke-dasharray:7 7}.tpl-course-module .family-node{position:absolute;z-index:1;padding:18px 22px;border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);min-width:150px}.tpl-course-module .family-node b{display:block;font:800 28px 'Playfair Display',serif;color:var(--signal)}.tpl-course-module .family-node span{display:block;color:var(--text-1);font-weight:700;margin-top:4px}.tpl-course-module .family-node small{display:block;color:var(--text-3);margin-top:5px}.tpl-course-module .ae-node{left:2%;top:20%}.tpl-course-module .vae-node{left:27%;top:0;background:var(--signal-soft);border-color:rgba(184,93,61,.35)}.tpl-course-module .cnn-node{right:27%;top:0}.tpl-course-module .tr-node{right:2%;top:20%;background:rgba(45,125,110,.07);border-color:rgba(45,125,110,.35)}.tpl-course-module .diff-node{left:40%;bottom:0}.tpl-course-module .diff-node b{color:#7c6aa6}
@media (max-width:1000px){.tpl-course-module .ae-visual{grid-template-columns:1fr}.tpl-course-module .visual-arrow{transform:rotate(90deg)}.tpl-course-module .use-case-grid,.tpl-course-module .generation{grid-template-columns:1fr}.tpl-course-module .gen-arrow{transform:rotate(90deg)}.tpl-course-module .gen-caption{grid-column:auto}.tpl-course-module .family-map{height:430px}.tpl-course-module .family-node{min-width:120px;padding:12px}.tpl-course-module .ae-node{left:0;top:20%}.tpl-course-module .vae-node{left:0;top:0}.tpl-course-module .cnn-node{right:0;top:0}.tpl-course-module .tr-node{right:0;top:20%}.tpl-course-module .diff-node{left:35%;bottom:0}}