body.track-b{background:var(--line-ground)}body.track-b .track-head{max-width:1200px;margin:0 auto;padding:20px 16px 8px;text-align:left;background:none;border:0}.track-head__row{display:flex;align-items:center;gap:10px}body.track-b .track-head h1{margin:0;font:800 22px/1.2 var(--font-display);color:var(--text)}.track-head__meta{margin:6px 0 10px;font-size:14px;color:var(--muted);font-variant-numeric:tabular-nums}body.track-b .track-head__desc{margin:12px 0 4px;font-size:14px;color:var(--muted);max-width:70ch}body.track-b .hub-header__actions{margin:4px 0 0}body.track-b .hub-play-all{display:inline-flex;align-items:center;min-height:44px;padding:0 14px;border:1px solid var(--line-rule);border-radius:22px;background:none;color:var(--text);font-size:14px}.line-code{display:inline-grid;place-items:center;flex-shrink:0;width:30px;height:30px;border-radius:50%;background:var(--line);color:var(--line-on);font:800 12px/1 var(--font-display)}.line-code:before{content:var(--line-code)}.line-strip{position:relative;display:flex;align-items:center;justify-content:space-between;height:18px}.line-strip:before{content:"";position:absolute;left:3px;right:3px;top:50%;height:4px;margin-top:-2px;border-radius:2px;background:var(--line)}.line-strip i{position:relative;box-sizing:border-box;width:10px;height:10px;border:2px solid var(--line);border-radius:50%;background:var(--line-ground)}.line-strip i.is-done{background:var(--line)}.line-strip i.is-here{width:16px;height:16px;border:3px solid var(--line-ground);background:var(--line-here);box-shadow:0 0 0 2px var(--line-here)}body.track-b .track-main{max-width:1200px;margin:0 auto;padding:8px 16px 24px}body.track-b .track-main__title{margin:8px 0 10px;text-align:left;font:600 13px/1.4 var(--font-body);color:var(--muted)}body.track-b .station-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;margin:0}body.track-b .station-card{display:flex;flex-direction:column;gap:8px;min-width:0;padding:14px;border:1px solid var(--line-rule);border-top:4px solid var(--line);border-radius:12px;background:var(--surface-muted);text-align:left;opacity:1;transform:none;animation:none;box-shadow:none}body.track-b .station-card.module-card--starter-highlight{border-color:var(--line-rule);border-top-color:var(--line)}body.track-b .station-card--here{box-shadow:0 0 0 2px var(--line-here)}.station-card__head{display:flex;align-items:center;gap:8px;min-width:0}body.track-b .station-card__head h3{margin:0;font:800 16px/1.3 var(--font-body);color:var(--text);min-width:0}.station-card__here{padding:2px 7px;border-radius:4px;background:var(--line-here);color:var(--line-here-on);font:800 11px/1.3 var(--font-body);white-space:nowrap}.station-card__head:has(.station-card__here) h3{flex:0 1 auto}.station-card__pc{margin-left:auto;font:14px/1 var(--font-mono);font-variant-numeric:tabular-nums;color:var(--muted);white-space:nowrap}.station-card__bar{height:6px;border-radius:3px;background:var(--line-rule);overflow:hidden}.station-card__bar b{display:block;width:0;height:100%;background:var(--line)}body.track-b .station-card__meta{margin:0;font-size:13px;color:var(--muted)}body.track-b .station-card .module-links{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:4px;margin:4px 0 0;padding:4px;border-radius:10px;background:var(--line-ground)}body.track-b .station-card .module-links a{display:grid;place-items:center;min-width:0;min-height:44px;margin:0;padding:0 2px;border:0;border-radius:7px;background:none;color:var(--text);font:700 13px/1.1 var(--font-body);text-decoration:none;white-space:nowrap}body.track-b .station-card .module-links a.module-links__game{background:none!important;border:0!important}body.track-b .station-card .module-links a:focus-visible,body.track-b .hub-play-all:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}body.track-b .station-card .module-progress,body.track-b .station-card .hub-progress{display:none}@media(min-width:900px){body.track-b .track-head{padding-top:28px}body.track-b .track-head h1{font-size:26px}body.track-b .station-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}}body.track-b .onboarding-hub-banner{display:none}body.track-b .station-line{list-style:none;padding:0 0 0 36px;position:relative;display:grid;grid-template-columns:minmax(0,1fr);gap:14px;max-width:46rem}body.track-b .station-line:before{content:"";position:absolute;left:11px;top:20px;bottom:20px;width:4px;border-radius:2px;background:var(--line)}body.track-b .station-line>.station-card{position:relative;border-top:1px solid var(--line-rule)}body.track-b .station-line>.station-card:before{content:"";position:absolute;left:-33px;top:16px;width:18px;height:18px;box-sizing:border-box;border:4px solid var(--line);border-radius:50%;background:var(--line-ground)}body.track-b .station-line>.station-card--here:before{border-color:var(--line-ground);background:var(--line-here);box-shadow:0 0 0 3px var(--line-here)}body.track-b .station-card .module-links{display:flex;flex-direction:column;gap:6px;padding:0;background:none;grid-template-columns:none}body.track-b .station-card .module-links a.station-go{min-height:44px;padding:0 16px;border-radius:10px;background:var(--line);color:var(--line-on);font:700 15px/1.2 var(--font-body);white-space:normal;text-align:center}body.track-b .station-card--here .module-links a.station-go{background:var(--line-here);color:var(--line-here-on)}body.track-b .station-modes summary{display:flex;align-items:center;min-height:44px;padding:0 4px;cursor:pointer;color:var(--text-secondary);font:600 14px/1.2 var(--font-body);list-style-position:inside}body.track-b .station-modes summary:focus-visible,body.track-b .station-card .module-links a.station-go:focus-visible{outline:3px solid var(--focus-ring);outline-offset:2px}body.track-b .station-modes__list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:4px;padding:4px;border-radius:10px;background:var(--line-ground)}@media(min-width:900px){body.track-b .station-line{grid-template-columns:minmax(0,1fr);margin:0}body.track-b .track-head h1{font-size:40px;letter-spacing:-.01em}body.track-b .track-head__meta,body.track-b .track-head__desc{font-size:16px}body.track-b .station-card__head h3{font-size:18px}body.track-b .station-card__meta{font-size:14px}}