/* 合作曲目沿用品牌色與字型；無封面，資料仍由音樂作品管理。 */
.collab-archive{margin-top:88px;padding-top:32px;border-top:2px solid var(--ink)}
.collab-archive--standalone{margin-top:36px}
.collab-editorial{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.4fr);gap:clamp(28px,4vw,64px);align-items:start}
.collab-visual{position:sticky;top:32px}
.collab-visual img{display:block;width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;border-radius:2px}
.collab-content{min-width:0}
.collab-heading{margin-bottom:40px}
.collab-heading h3{display:flex;align-items:center;gap:16px;font-size:clamp(1.7rem,3vw,2.6rem);line-height:1.3}
.collab-count{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:28px;padding:0 8px;background:var(--gold);border-radius:2px;font-size:12px;font-weight:600;letter-spacing:.04em;font-variant-numeric:tabular-nums}
.collab-heading p{margin:12px 0 0;color:var(--ink-70);font-size:14px}
.collab-tracks{list-style:none;margin:0;padding:0}
.collab-track{margin:0;border-bottom:1px solid var(--line)}
.collab-track-link{display:grid;grid-template-columns:48px minmax(0,1fr) auto;gap:16px;align-items:start;padding:26px 8px 26px 0;color:var(--ink);text-decoration:none;transition:background .2s ease}
.collab-year{padding-top:6px;font-size:13px;font-weight:500;letter-spacing:.05em;color:var(--ink-70);font-variant-numeric:tabular-nums}
.collab-copy{min-width:0}
.collab-copy h4{margin:0;font-size:clamp(1.4rem,2.5vw,2rem);line-height:1.45;font-weight:500;overflow-wrap:anywhere}
.collab-copy p{margin:10px 0 0;max-width:58ch;font-size:14px;line-height:1.9;color:var(--ink-70);overflow-wrap:anywhere}
.collab-open{display:flex;align-items:center;gap:8px;white-space:nowrap;padding-top:8px;font-size:0;color:var(--ink-70)}
.collab-open>span{font-size:21px;line-height:1;transition:transform .2s ease}
.collab-track-link:focus-visible{outline:2px solid var(--coral);outline-offset:4px;background:var(--leaf)}
.collab-track-link:active{background:var(--leaf)}
@media(hover:hover){.collab-track-link:hover{background:var(--leaf)}.collab-track-link:hover .collab-open>span{transform:translate(2px,-2px)}}
@media(max-width:767px){
  .collab-editorial{grid-template-columns:minmax(0,1fr);gap:28px}
  .collab-visual{position:static}
  .collab-visual img{aspect-ratio:16/9;object-position:center 65%}
  .collab-archive{margin-top:56px;padding-top:24px}
  .collab-archive--standalone{margin-top:28px}
  .collab-heading{margin-bottom:20px}
  .collab-track-link{grid-template-columns:minmax(0,1fr) auto;gap:8px 16px;padding:24px 0}
  .collab-year{grid-column:1;padding:0;font-size:12px}
  .collab-copy{grid-column:1;grid-row:2}
  .collab-copy h4{font-size:23px}
  .collab-copy p{font-size:13px;line-height:1.85}
  .collab-open{grid-column:2;grid-row:1 / 3;align-self:center;font-size:0;gap:0;padding:0 4px}
  .collab-open>span{font-size:24px}
}
@media(prefers-reduced-motion:reduce){.collab-track-link,.collab-open>span{transition:none}.collab-track-link:hover .collab-open>span{transform:none}}