.classroom-home{min-height:100vh;background:var(--paper);color:var(--ink);font-family:var(--font-sans)}.classroom-home *{box-sizing:border-box}.room-nav,.room-main{width:min(1240px,calc(100% - 48px));margin:auto}.room-nav{display:flex;align-items:center;gap:28px;min-height:80px;border-bottom:1px solid var(--line);flex-wrap:wrap;padding:16px 0}.room-brand{font-size:24px;font-weight:750;margin-right:auto}.room-nav a{text-decoration:none;color:inherit}.room-nav [aria-current]{border-bottom:3px solid var(--sun);padding-bottom:8px}.room-main{padding:48px 0 64px}.room-hero{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-bottom:36px}.room-hero h1{font-size:clamp(30px,4vw,48px);line-height:1.3;margin:10px 0 16px}.room-hero p{max-width:660px;color:var(--ink-2);line-height:1.8}.room-actions{display:flex;gap:12px;flex-wrap:wrap}.room-columns{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(320px,1fr);gap:28px;align-items:start}.room-panel{background:var(--paper-card);border:1px solid var(--line);border-radius:var(--r-card);padding:28px;min-width:0}.room-panel h2{font-size:23px;margin:0 0 12px}.room-panel p{line-height:1.8;color:var(--ink-2)}.room-search{width:100%;margin:16px 0;padding:13px 16px;border:1px solid var(--line);border-radius:8px;background:var(--paper);font:inherit}.room-courses{display:grid;gap:12px;max-height:380px;overflow:auto}.room-course{display:flex;align-items:center;gap:16px;width:100%;padding:18px;text-align:left;font:inherit;color:var(--ink);border:1px solid var(--line);border-radius:10px;background:var(--paper);cursor:pointer}.room-course[aria-pressed=true]{border-color:var(--sun);box-shadow:inset 0 0 0 1px var(--sun)}.room-course span{display:grid;gap:6px}.room-course small{color:var(--ink-2)}.room-course:hover{background:var(--paper-deep)}.room-course:focus-visible,.classroom-home button:focus-visible{outline:3px solid var(--sun);outline-offset:3px}.room-empty{padding:28px 8px;border-block:1px dashed var(--line);margin:20px 0}.room-empty h3{font-size:21px;margin-bottom:10px}.room-open{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:end;margin-top:24px}.room-open label{display:grid;gap:8px}.room-stage{aspect-ratio:16/10;background:var(--paper-deep);border:1px solid var(--line);border-radius:10px;padding:28px;position:relative;overflow:hidden;display:grid;place-items:center;text-align:center}.room-stage h3{font-size:25px;margin:12px 0}.room-stage p{font-size:14px}.room-stage canvas{position:absolute;inset:0;width:100%;height:100%;touch-action:none;background:var(--paper-card)}.room-tools{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.room-tools button{font:inherit;font-size:13px;border:1px solid var(--line);background:var(--paper);padding:9px 12px;border-radius:6px;cursor:pointer}.room-tools button[aria-pressed=true]{background:var(--sun)}.room-capabilities{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}.room-capabilities article{border-top:1px solid var(--line);padding-top:20px}.room-capabilities h3{font-size:17px;margin-bottom:8px}.room-capabilities p{font-size:14px;line-height:1.8;color:var(--ink-2)}.room-note{font-size:13px;color:var(--ink-3)}.room-hidden-select{display:none}.classroom-home [hidden]{display:none!important}@media(max-width:800px){.room-columns{grid-template-columns:1fr}.room-hero{display:block}.room-hero .room-actions{margin-top:20px}.room-capabilities{grid-template-columns:1fr}.room-nav{gap:16px;font-size:14px}.room-brand{width:100%}.room-main{padding-top:28px}.room-panel{padding:20px}.room-open{grid-template-columns:1fr}.room-nav,.room-main{width:calc(100% - 32px)}}