:root{color-scheme:dark;--page:#101b24;--panel:#1a2d3a;--raised:#223c4b;--text:#edf3f7;--muted:#b4c7d3;--line:#38515f;--accent:#86d52f;font:16px/1.55 system-ui,-apple-system,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--page);color:var(--text)}button,a,select{font:inherit}a{color:inherit}header{display:flex;align-items:center;gap:34px;padding:20px 32px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:15px;text-decoration:none;white-space:nowrap}.brand b{color:var(--accent);font-size:26px}.brand span{font-weight:650}nav{display:flex;gap:8px;margin-left:auto}nav a{padding:9px 14px;text-decoration:none;border-radius:7px;font-size:14px}nav a[aria-current=page]{background:var(--raised);color:var(--accent)}select,button{border:1px solid var(--line);border-radius:6px;background:var(--raised);color:var(--text);padding:9px 14px;cursor:pointer}button:hover,a:hover{color:var(--accent)}button.primary{background:var(--accent);color:#132007;border-color:var(--accent);font-weight:650}button:disabled{opacity:.4;cursor:default}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid var(--accent);outline-offset:3px}main{max-width:1760px;margin:auto;padding:28px 32px 48px}h1{font-size:30px;line-height:1.2;margin:0 0 12px}h2{font-size:22px;line-height:1.35;margin:8px 0 14px}h3{font-size:17px;margin:0}p{margin:0 0 14px}.muted{color:var(--muted)}.eyebrow{color:var(--accent);font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.intro{max-width:850px;margin:0 0 28px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.lesson-card,.log-entry,.empty{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:24px}.lesson-card{display:flex;flex-direction:column;gap:10px;text-decoration:none}.lesson-card.featured{border-color:var(--accent);grid-column:span 2}.lesson-card img{width:100%;border-radius:6px;aspect-ratio:16/9;object-fit:cover}.badge{display:inline-block;font-size:13px;color:var(--accent)}.lesson-card p{color:var(--muted)}.lesson-card.pending{opacity:.7}.breadcrumb{display:inline-block;margin-bottom:15px;color:var(--muted);font-size:14px}.lesson-top{display:flex;align-items:start;justify-content:space-between;gap:24px;margin-bottom:24px}.lesson-top p{margin-bottom:0}.tour{display:grid;grid-template-columns:250px minmax(0,1fr);gap:28px}.steps{border-right:1px solid var(--line);padding-right:20px}.chapter{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.08em;margin:18px 0 7px}.chapter:first-child{margin-top:0}.step-link{display:flex;align-items:start;gap:10px;padding:9px 10px;margin-bottom:3px;border-radius:6px;text-decoration:none;font-size:14px;line-height:1.4}.step-link .number{min-width:20px;color:var(--muted)}.step-link[aria-current=step]{background:var(--raised);box-shadow:inset 3px 0 var(--accent)}.teaching{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:24px;align-items:start}.screen{position:relative;overflow:hidden;border-radius:8px;background:#14232e;line-height:0;border:1px solid var(--line)}.screen img{width:100%;display:block}.spotlight{position:absolute;border:2px solid var(--accent);border-radius:5px;box-shadow:0 0 0 2000px #070f1760;pointer-events:none}.image-caption{display:flex;justify-content:space-between;align-items:center;gap:12px;padding-top:12px;font-size:13px;color:var(--muted)}.image-caption button{font-size:13px;padding:6px 10px}.explanation{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:22px}.explanation p{line-height:1.7}.progress{font-size:13px;color:var(--muted)}.compare{width:100%;margin:8px 0 12px}.state-label{font-size:14px;color:var(--accent)}.navigation{display:flex;align-items:center;justify-content:space-between;margin-top:24px;gap:16px}.progress-track{height:4px;background:var(--line);margin-top:22px;border-radius:2px;overflow:hidden}.progress-track span{display:block;height:100%;background:var(--accent)}.completion{background:var(--panel);border:1px solid var(--accent);padding:36px;border-radius:10px;max-width:780px}.logs{max-width:1040px;display:grid;gap:16px}.log-meta{font-size:13px;color:var(--muted);display:flex;gap:14px;margin-bottom:8px}.log-entry p{color:var(--muted);margin-bottom:10px}.log-entry a{font-size:13px;color:var(--accent)}footer{display:flex;justify-content:space-between;gap:24px;padding:20px 32px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}dialog{max-width:96vw;width:1640px;max-height:95vh;padding:18px;background:var(--page);color:var(--text);border:1px solid var(--line);border-radius:10px}dialog::backdrop{background:#000c}dialog button{float:right;margin-bottom:12px}dialog img{width:100%;display:block;border-radius:6px}dialog p{margin:12px 0 0}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:1450px){.teaching{grid-template-columns:minmax(0,1fr)}.explanation{display:grid;grid-template-columns:1fr auto;gap:0 24px}.explanation .progress,.explanation h2,.explanation p{grid-column:1}.explanation .compare,.explanation .state-label{grid-column:2;grid-row:auto}.tour{grid-template-columns:230px minmax(0,1fr)}}@media(max-width:1000px){header{flex-wrap:wrap;padding:16px 20px;gap:14px}nav{order:3;width:100%;margin:0}.language{margin-left:auto}main{padding:24px 20px}.tour{grid-template-columns:190px minmax(0,1fr);gap:18px}.cards{grid-template-columns:repeat(2,1fr)}.explanation{display:block}}@media(max-width:700px){.tour{display:block}.steps{border:0;padding:0;max-height:180px;overflow:auto;margin-bottom:20px}.cards{grid-template-columns:1fr}.lesson-card.featured{grid-column:auto}.lesson-top{display:block}.lesson-top .badge{margin-top:12px}nav{gap:0}nav a{padding:8px;font-size:12px}footer{display:block}}
.steps{max-height:calc(100vh - 260px);overflow:auto;position:sticky;top:16px;align-self:start}.navigation{margin:0 0 20px;padding:10px 0;background:var(--page);position:sticky;top:0;z-index:2}@media(max-width:1450px){.explanation{grid-row:1}.teaching>div{grid-row:2}}@media(max-width:700px){.steps{position:static;max-height:180px}.navigation{font-size:14px}}

.motion-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.motion-sections section{margin-top:32px}.motion-card{background:var(--panel,#192f3d);border:1px solid #36505e;border-radius:12px;padding:24px}.motion-image{height:440px;background:#09141b;border-radius:8px;display:flex;justify-content:center;align-items:center}.motion-image img{max-width:100%;max-height:100%;object-fit:contain}.motion-actions{display:flex;align-items:center;flex-wrap:wrap;gap:16px;margin-top:16px}.motion-card p{min-height:5em}@media(max-width:1000px){.motion-grid{grid-template-columns:1fr}}

/* Equal catalogue tiles and an image-first walkthrough. */
.cards{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;grid-auto-rows:minmax(0,1fr)}
.catalogue-count{margin:-10px 0 20px;font-size:14px}
.lesson-card{padding:16px;gap:8px;min-width:0}
.lesson-card h2{font-size:18px;line-height:1.3;margin:0;min-height:2.6em}
.lesson-card .badge{min-height:1.4em;line-height:1.4}
.lesson-card img.card-preview{width:100%;height:auto;aspect-ratio:auto;object-fit:contain;background:#14232e;border:1px solid var(--line)}
.lesson-card.portrait{display:grid;grid-template-columns:47% minmax(0,1fr);grid-template-rows:auto auto 1fr auto;column-gap:16px;row-gap:10px}
.lesson-card.portrait .badge,.lesson-card.portrait h2{grid-column:1/-1}
.lesson-card.portrait .badge{grid-row:1}.lesson-card.portrait h2{grid-row:2}
.lesson-card.portrait .card-preview{grid-column:1;grid-row:3/5;align-self:start;max-height:100%}
.lesson-card.portrait p{grid-column:2;grid-row:3}.lesson-card.portrait .card-action{grid-column:2;grid-row:4}
.lesson-card p{font-size:15px;min-height:3.1em;margin:0}
.lesson-card .card-action{font-size:14px;margin-top:auto}
.lesson-card.pending{opacity:1}
a.lesson-card:hover{border-color:var(--accent);color:var(--text)}
.walkthrough-main{max-width:none;padding:0 0 24px}
.walkthrough{width:100%}
.lesson-visual{position:relative;width:min(100%,calc((100dvh - 80px)*16/9));margin:auto}
.walkthrough .screen{border-radius:0;aspect-ratio:16/9}
.walkthrough .screen img{width:100%;height:100%;aspect-ratio:16/9;object-fit:contain}
.instruction-bar{position:absolute;z-index:1;width:min(410px,calc(100% - 32px));height:auto;display:block;padding:16px 18px;background:#1a2d3af2;border:1px solid #63818d;border-radius:12px;box-shadow:0 12px 32px #0009;line-height:1.35}
.instruction-bar .explanation{display:block;border:0;border-radius:0;padding:0;background:transparent}
.step-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}
.instruction-bar .progress{font-size:12px}
.instruction-bar .exit-tutorial{width:28px;height:28px;display:grid;place-items:center;padding:0;border:0;background:transparent;color:var(--muted);font-size:23px;line-height:1}
.instruction-bar .exit-tutorial:hover{background:var(--raised);color:var(--text)}
.instruction-bar .explanation h2{font-size:19px;line-height:1.25;min-height:0;margin:2px 0 6px}
.instruction-bar .step-summary{display:block;overflow:visible;line-height:1.45;height:auto;margin:0;font-size:13.5px;overflow-wrap:anywhere}
.step-controls{width:auto}
.instruction-bar .navigation{position:static;display:flex;justify-content:flex-end;gap:8px;background:transparent;margin:12px 0 0;padding:0}
.instruction-bar .navigation button{padding:5px 10px;background:transparent;border-color:#526b78;color:var(--muted);font-size:13px;font-weight:500}
.instruction-bar .navigation button.primary{background:var(--accent);border-color:var(--accent);color:#132007;font-weight:650}
.instruction-bar .navigation button:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}
.instruction-bar .navigation button.primary:hover:not(:disabled){background:#9ce342;border-color:#9ce342;color:#132007}
.comparison-controls{display:flex;align-items:center;gap:10px;margin-top:8px}
.comparison-controls .compare{width:auto;max-width:100%;margin:0;padding:6px 10px;font-size:13px}
.comparison-controls .state-label{font-size:13px}
@media(max-width:1200px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:700px){.cards{grid-template-columns:minmax(0,1fr)}.instruction-bar{position:static;width:auto;margin:12px;border-radius:10px}.comparison-controls{flex-wrap:wrap}.lesson-visual{width:100%}}
@media(max-width:560px){.lesson-card.portrait{display:flex}.lesson-card.portrait .card-preview{width:100%;height:240px}}

/* Public update cards keep provenance in data while showing only coach-facing text. */
.log-meta{align-items:center;flex-wrap:wrap;column-gap:12px;row-gap:6px;margin-bottom:12px}
.log-meta time{font-variant-numeric:tabular-nums;color:var(--muted)}
.log-status{display:inline-flex;align-items:center;border:1px solid;border-radius:999px;padding:2px 10px;font-size:12px;font-weight:650;line-height:1.4}
.log-status.beta{color:#b9d7e8;border-color:#4f7589;background:#243f50}
.log-status.production{color:var(--accent);border-color:#639834;background:#223b26}
.log-entry p{margin-bottom:0}