/* Sound Check: one hierarchy, two distinct training tracks. */
body[data-audio-type=station] .hero{display:block;min-height:0;margin:8px 0 24px;padding:0}
body[data-audio-type=station] .hero h1{font-size:clamp(32px,5vw,48px);line-height:1.15;margin:12px 0 16px}
body[data-audio-type=station] .hero p{font-size:16px;line-height:1.6}
body[data-audio-type=station] .library-section{margin-top:28px}
body[data-audio-type=station] .library-card{padding:24px;min-height:0}
body[data-audio-type=station] .library-card h3{font-size:28px;line-height:1.25;margin:28px 0 16px}
body[data-audio-type=station] .library-card p{font-size:16px;line-height:1.6}
body[data-audio-type=station] .library-card .open{position:static;display:flex;align-items:center;min-height:44px;margin-top:16px}
body[data-audio-type=station] .bridge{font-size:15px;line-height:1.6;margin-top:32px}
body[data-audio-type=station] .bridge:not([open]){padding:12px 20px}
body[data-audio-type=station] .bridge summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-weight:700}
body[data-audio-type] .catalog-head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:16px;margin:24px 0}
body[data-audio-type] .catalog-head h1{font-size:clamp(26px,4vw,40px);line-height:1.2;margin:8px 0 12px}
body[data-audio-type] .catalog-head p{font-size:16px;line-height:1.6;margin:0}
body[data-audio-type] [hidden]{display:none!important}
html[data-appearance] body[data-audio-type] .filter-bar.tt-level-postits[hidden]{display:none!important}
html[data-appearance] body[data-audio-type] .wrap{width:min(1100px,calc(100% - 32px));padding-left:0!important;padding-right:0!important}
html[data-appearance] body[data-audio-type] .site-head{display:flex!important;flex-wrap:nowrap!important;align-items:center!important;height:auto!important;min-height:76px!important;padding:12px 16px!important;gap:12px!important}
html[data-appearance] body[data-audio-type] .site-head .brand{min-width:0!important;flex:1!important}
html[data-appearance] body[data-audio-type] .site-head .head-links{width:auto!important;flex:none!important;margin:0!important;padding:0!important}
html[data-appearance] body[data-audio-type] .site-head .head-links>a{display:none!important}
html[data-appearance] body[data-audio-type] .filter-bar.tt-level-postits{display:grid!important;grid-template-columns:repeat(6,minmax(0,1fr))!important;gap:12px!important;padding:12px 3px!important}
html[data-appearance] body[data-audio-type] .filter-bar.tt-level-postits>a{min-height:76px!important;padding:16px 12px!important;display:flex!important;align-items:center!important;justify-content:center!important;font-size:16px!important;line-height:1.4!important;color:#243a58!important;background:#fff2b5!important;border:1px solid #d2caa7!important;border-radius:5px 5px 10px 5px!important;box-shadow:0 4px 10px #3f361d12!important;outline:none!important;filter:none!important;transform:none!important}
html[data-appearance] body[data-audio-type] .filter-bar.tt-level-postits>a:nth-child(3n+2){background:#e1f1fa!important}
html[data-appearance] body[data-audio-type] .filter-bar.tt-level-postits>a:nth-child(3n){background:#e5f0df!important}
html[data-appearance=dark] body[data-audio-type] .filter-bar.tt-level-postits>a:nth-child(n){background:#18283d!important;color:#e6ecf6!important;border-color:#41536b!important;box-shadow:0 4px 10px #0002!important}
html[data-appearance] body[data-audio-type] .filter-bar.tt-level-postits>a::before{width:22px;height:10px;top:-5px;background:#f7f6eec9}
html[data-appearance] body[data-audio-type] .filter-bar.tt-level-postits>a:hover{border-color:var(--tt-accent)!important;box-shadow:0 5px 12px #0002!important}
body[data-audio-type] .audio-change-level{display:inline-flex;align-items:center;min-height:44px;padding:0 12px;border:1px solid var(--tt-border);border-radius:12px;color:var(--tt-text);text-decoration:none;font-weight:700;font-size:14px}
body[data-audio-type] .lesson-list{display:grid;gap:12px}
body[data-audio-type] .lesson-card{display:block;padding:0;border:1px solid var(--tt-border);border-radius:20px;background:var(--tt-card);overflow:hidden;box-shadow:0 5px 16px #00000006}
body[data-audio-type] .audio-lesson-open{display:flex;gap:14px;align-items:start;padding:20px;color:var(--tt-text);text-decoration:none}
body[data-audio-type] .audio-lesson-number{font-size:15px;font-weight:800;color:var(--tt-muted);line-height:1.6;flex:none;padding-top:3px}
body[data-audio-type] .lesson-copy{min-width:0;flex:1}
body[data-audio-type] .lesson-copy h2{font-size:22px;line-height:1.3;margin:0 0 8px;color:var(--tt-text)}
body[data-audio-type] .lesson-copy p{font-size:15px;line-height:1.6;margin:0 0 12px;color:var(--tt-muted)}
body[data-audio-type] .lesson-meta{display:flex;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--tt-muted)}
body[data-audio-type] .lesson-meta span{background:none;padding:0;border:0}
body[data-audio-type] .audio-lesson-arrow{font-size:20px;color:var(--tt-muted)}
body[data-audio-type] .lesson-card.tt-completion-card>.audio-lesson-open{height:auto}
body[data-audio-type] .lesson-card-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 20px 16px;min-width:0}
body[data-audio-type] .audio-start-button{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-width:112px;min-height:44px;padding:0 18px;border:1px solid var(--tt-accent);border-radius:12px;background:var(--tt-accent);color:#fff;text-decoration:none;font:800 14px/1.2 Inter,"Noto Sans KR",system-ui,sans-serif;letter-spacing:.02em;box-shadow:0 5px 14px color-mix(in srgb,var(--tt-accent) 18%,transparent);transition:transform .16s,box-shadow .16s}
body[data-audio-type] .audio-start-button:hover{transform:translateY(-1px);box-shadow:0 8px 17px color-mix(in srgb,var(--tt-accent) 25%,transparent)}
body[data-audio-type] .audio-start-button span{font-size:17px;line-height:1}
html[data-appearance=dark] body[data-audio-type] .audio-start-button{border-color:#4d9af5;background:#2165c9;color:#fff;box-shadow:0 5px 14px #0004}
body[data-audio-type] .tt-completion-button{min-height:44px;min-width:64px;padding:0 16px;border-radius:12px;background:var(--tt-raised);color:var(--tt-text);box-shadow:none;font-size:14px}
.audio-missions{margin:28px 0 20px;border:1px solid var(--tt-border);border-radius:18px;background:var(--tt-card);overflow:hidden}
.audio-missions-toggle{width:100%;min-height:64px;display:flex;gap:12px;align-items:center;text-align:left;padding:12px 18px;border:0;background:transparent;color:var(--tt-text);font:700 16px system-ui;cursor:pointer}
.audio-missions-toggle small{display:block;color:var(--tt-muted);font-weight:500;font-size:12px;margin-top:3px}
#audioMissionCount{margin-left:auto;color:var(--tt-muted);font-size:14px}
.audio-mission-row{display:flex;align-items:center;gap:12px;padding:12px 18px;border-top:1px solid var(--tt-border)}
.audio-mission-row a{flex:1;min-width:0;min-height:44px;color:var(--tt-text);text-decoration:none}
.audio-mission-row small{display:block;color:var(--tt-muted);font-size:12px;margin-bottom:4px}
.audio-mission-row strong{font-size:15px;line-height:1.5}
.audio-mission-row button{min-height:44px;min-width:76px;flex:none;border:1px solid var(--tt-border);border-radius:12px;background:var(--tt-raised);color:var(--tt-text);font:600 13px system-ui;cursor:pointer}
.audio-empty{font-size:15px;line-height:1.6;color:var(--tt-muted);padding:16px}
.audio-mission-notice{padding:0 18px;font-size:13px;color:var(--tt-muted)}
.audio-mission-notice:empty{display:none}
.audio-mission-bin-intro{margin:0;padding:5px 18px 9px;color:var(--tt-muted);font-size:13px;line-height:1.5}
.audio-mission-bin{margin:8px 12px;border:1px solid var(--tt-border);border-radius:14px;background:var(--tt-raised);overflow:hidden}
.audio-mission-bin:last-child{margin-bottom:12px}.audio-mission-bin summary{display:flex;align-items:center;gap:12px;min-height:54px;padding:10px 15px;cursor:pointer;list-style:none;color:var(--tt-text)}
.audio-mission-bin summary::-webkit-details-marker{display:none}.audio-mission-bin summary strong{display:grid;place-items:center;min-width:42px;min-height:32px;border-radius:9px;background:#fff0a9;color:#243957;font-size:16px}
.audio-mission-bin[data-level^=B] summary strong{background:#d9ecfa}.audio-mission-bin[data-level^=C] summary strong{background:#dcefd7}
.audio-mission-bin summary span{margin-left:auto;color:var(--tt-muted);font-size:13px;font-weight:700}.audio-mission-bin summary i{font-style:normal;color:var(--tt-muted);transition:transform .2s}.audio-mission-bin[open] summary i{transform:rotate(180deg)}
.audio-mission-bin-list{background:var(--tt-card)}.audio-mission-bin .audio-mission-row{padding:9px 14px}.audio-mission-bin-empty{margin:0;padding:14px 16px;border-top:1px solid var(--tt-border);color:var(--tt-muted);font-size:13px}
.audio-mission-row.is-arriving{animation:mission-bin-arrive .55s ease-out both}@keyframes mission-bin-arrive{from{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}
@media(prefers-reduced-motion:reduce){.audio-mission-row.is-arriving{animation:none}.audio-mission-bin summary i{transition:none}}
body[data-audio-type] a:focus-visible,body[data-audio-type] button:focus-visible{outline:2px solid var(--tt-accent)!important;outline-offset:3px}
@media(max-width:620px){body[data-audio-type] .wrap{padding-left:16px;padding-right:16px}html[data-appearance] body[data-audio-type] .filter-bar.tt-level-postits{grid-template-columns:repeat(3,minmax(0,1fr))!important;gap:12px!important}html[data-appearance] body[data-audio-type] .filter-bar.tt-level-postits>a{min-height:56px!important;font-size:15px!important;padding:12px!important}body[data-audio-type] .audio-lesson-open{padding:18px 16px;gap:12px}body[data-audio-type] .lesson-copy h2{font-size:20px}body[data-audio-type] .lesson-card-actions{padding:0 16px 14px}}