.classroom-preview{max-width:1080px;margin:auto;padding:40px 20px 70px;color:var(--ink,#48382e)}.classroom-heading h1{font-size:clamp(30px,4vw,42px);font-weight:500;margin:0 0 12px}.classroom-heading p{color:var(--soft,#786356);line-height:1.8}.preview-note{font-size:12px;margin:0 0 14px}.classroom-tabs{display:flex;gap:32px;overflow-x:auto;border-bottom:1px solid var(--line,#dfceb9);margin:30px 0 32px}.classroom-tabs button{flex-shrink:0;border:0;border-bottom:2px solid transparent;background:none;color:var(--soft,#786356);font:inherit;font-size:17px;padding:14px 2px;cursor:pointer}.classroom-tabs button[aria-pressed=true]{color:var(--accent,#a9442f);border-bottom-color:currentColor}.classroom-tabs button:focus-visible{outline:2px solid var(--accent,#a9442f);outline-offset:-3px}.course-panel[hidden]{display:none}.panel-heading{display:flex;justify-content:space-between;gap:24px;align-items:center}.panel-label{color:var(--soft,#786356);font-size:12px}.panel-heading h2{font-size:28px;font-weight:500;margin:8px 0 10px}.panel-heading p{color:var(--soft,#786356);font-size:14px;line-height:1.8;margin:0}.collection-count{color:var(--soft,#786356);font-size:13px;white-space:nowrap}.collection-intro{display:flex;justify-content:space-between;align-items:center;gap:24px;margin-top:28px;padding:22px 0 12px;border-top:1px solid var(--line,#dfceb9)}.collection-intro h3{margin:0 0 8px;font-size:19px;font-weight:500}.access-note,.collection-intro p{font-size:13px;color:var(--soft,#786356);line-height:1.8;margin:0}.collection-intro a{display:inline-flex;align-items:center;gap:24px;padding:12px 16px;min-height:44px;border:1px solid var(--line,#dfceb9);border-radius:6px;text-decoration:none;color:var(--accent,#a9442f);font-size:13px}.access-note{margin:0 0 24px}.course-list{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:0 32px;padding:0;margin:0}.course-list li{border-top:1px solid var(--line,#dfceb9)}.course-list a{display:flex;align-items:center;gap:14px;min-height:70px;padding:10px 0;text-decoration:none;color:inherit;font-size:14px}.course-list a:hover{color:var(--accent,#a9442f)}.course-list small{margin-left:auto;white-space:nowrap;color:var(--soft,#786356)}.course-list span:first-child{color:var(--soft,#786356);font-size:12px}.belcanto-plan{margin-top:30px;padding:28px;background:var(--sheet,#fffdf8);border:1px solid var(--line,#dfceb9);border-radius:12px}.plan-intro{max-width:560px}.plan-intro h3{font-size:21px;font-weight:500;margin:0 0 10px}.plan-intro p{font-size:14px;line-height:1.8;color:var(--soft,#786356)}.practice-path{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin:30px 0 0;padding:0}.practice-path li{border-top:1px solid var(--line,#dfceb9);padding-top:18px}.practice-path h3{font-size:17px;font-weight:500;margin:0 0 10px}.practice-path p{font-size:13px;line-height:1.8;color:var(--soft,#786356);min-height:46px}.practice-path span{font-size:11px;color:var(--accent,#a9442f)}.lesson-empty{padding:32px 0}.lesson-empty h3{font-size:18px;font-weight:500}.lesson-empty p{font-size:13px;color:var(--soft,#786356);line-height:1.8}@media(max-width:650px){.classroom-preview{padding:28px 4px 48px}.classroom-tabs{gap:28px;margin-top:20px}.course-list{grid-template-columns:1fr}.collection-intro{align-items:flex-start;flex-direction:column;gap:12px}.panel-heading{gap:12px}.practice-path{grid-template-columns:1fr;gap:22px}.practice-path p{min-height:0}.belcanto-plan{padding:22px}.classroom-heading h1{font-size:30px}}.voice-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:28px 0 16px}.voice-tabs button{font:inherit;font-size:14px;display:flex;gap:12px;align-items:center;min-height:44px;padding:10px 18px;background:transparent;border:1px solid var(--line,#dfceb9);border-radius:6px;color:var(--soft,#786356);cursor:pointer}.voice-tabs button[aria-pressed=true]{background:var(--accent,#a9442f);border-color:var(--accent,#a9442f);color:#fff}.voice-tabs small{font-size:11px}.voice-panel[hidden]{display:none}.voice-heading{display:flex;align-items:center;justify-content:space-between;margin:28px 0 14px}.voice-heading h3{font-size:20px;font-weight:500;margin:0}.voice-heading>span{font-size:12px;color:var(--soft,#786356)}.aria-list{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:0 32px;margin:0;padding:0}.aria-list li{border-top:1px solid var(--line,#dfceb9)}.aria-list a{display:flex;align-items:center;gap:16px;min-height:88px;padding:16px 4px;text-decoration:none;color:inherit}.aria-list a:hover{color:var(--accent,#a9442f);background:var(--sheet,#fffdf8)}.aria-list a>span{font-size:12px;color:var(--soft,#786356)}.aria-list a>span:last-child{margin-left:auto}.aria-list strong{font-size:15px;font-weight:500}.aria-list small{display:block;font-size:12px;color:var(--soft,#786356);margin-top:6px;line-height:1.5}.aria-list a:focus-visible,.voice-tabs button:focus-visible{outline:2px solid var(--accent,#a9442f);outline-offset:2px}@media(max-width:650px){.aria-list{grid-template-columns:1fr}.voice-tabs{gap:6px}.voice-tabs button{padding:9px 12px}.collection-count{white-space:normal;text-align:right}}