:root{color-scheme:dark;--bg:#08111f;--fg:#f1f5f9;--muted:#a8b7ca;--line:#31445c;--surface:#101e32;--accent:#14b8a6}html[data-theme=light]{color-scheme:light;--bg:#f5f7fa;--fg:#122137;--muted:#485c73;--line:#c6d1de;--surface:#fff;--accent:#087e73}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,sans-serif}a{color:inherit}button,input,select{font:inherit}button,.button{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--fg);padding:.6rem .9rem;text-decoration:none;cursor:pointer}button:hover,.button:hover{border-color:var(--accent)}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid var(--accent);outline-offset:3px}.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.wrap{max-width:1200px;margin:auto;padding:0 28px}header{border-bottom:1px solid var(--line)}header .wrap{min-height:80px;display:flex;align-items:center;justify-content:space-between;gap:24px}nav,.actions,.controls{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.brand{text-decoration:none;font-weight:700}.brand span,.eyebrow{color:var(--accent)}.hero{padding:62px 0 35px}.eyebrow{font-size:.85rem;font-weight:700;letter-spacing:.09em;text-transform:uppercase}h1{font-size:clamp(2rem,4.5vw,3.5rem);line-height:1.12;max-width:1000px;margin:14px 0 20px}h2{font-size:1.9rem;line-height:1.2}h3{font-size:1.4rem;line-height:1.25}.lead{font-size:1.15rem;color:var(--muted);max-width:940px}.section{padding:25px 0 50px}.decks{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.deck{border-top:3px solid var(--accent);padding-top:22px}.deck:nth-child(2){border-color:#a855f7}.deck:nth-child(3){border-color:#f59e0b}.deck p{color:var(--muted)}.meta{font-size:.9rem;color:var(--muted)}.callout{border-left:3px solid var(--accent);padding:10px 22px;margin:28px 0}.viewer-main{max-width:1450px;margin:auto;padding:24px}.viewer-main h1{font-size:1.7rem;margin:10px 0 6px}.stage{background:#000;position:relative;width:100%;aspect-ratio:16/9;display:flex;align-items:center;justify-content:center;overflow:hidden;border:1px solid var(--line);border-radius:4px}.stage img{width:100%;height:100%;object-fit:contain}.stage:fullscreen,.stage.expanded{width:100vw;height:100vh;aspect-ratio:auto}.stage:fullscreen .fs-controls,.stage.expanded .fs-controls{display:flex}.fs-controls{display:none;position:absolute;bottom:12px;left:50%;transform:translateX(-50%);background:#08111fcc;padding:6px;border-radius:9px;gap:8px}.fs-controls button{font-size:15px;color:#f1f5f9;background:#132238}.controls{margin:16px 0;justify-content:space-between}.group{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.group input[type=number]{width:80px;padding:8px;border-radius:7px;border:1px solid var(--line);background:var(--surface);color:var(--fg)}select{padding:8px;border:1px solid var(--line);background:var(--surface);color:var(--fg);border-radius:7px}.progress{height:4px;background:var(--line);margin:8px 0}.progress span{display:block;height:4px;background:var(--accent);transition:width .15s}details{padding:12px 0;border-top:1px solid var(--line)}summary{cursor:pointer;font-weight:600}.slide-text{max-width:1000px;color:var(--muted);white-space:pre-line}.end-message{font-weight:600;color:var(--accent);min-height:26px}.download-row{padding:12px 0}.help{font-size:.9rem;color:var(--muted)}footer{border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:.85rem}@media(max-width:800px){.decks{grid-template-columns:1fr}.hero{padding-top:35px}.wrap{padding:0 20px}header .wrap{padding-top:14px;padding-bottom:14px;flex-wrap:wrap}.viewer-main{padding:12px}.controls{justify-content:flex-start}h1{font-size:2.2rem}}@media print{header,.controls,.progress,.download-row,.help,.end-message,details,footer{display:none}.viewer-main{padding:0}.stage{border:0}body{background:#fff}}

.stage.expanded{position:fixed;inset:0;z-index:10000;border:0;border-radius:0}

.study-resources{margin-top:36px}