/* ─────────────────────────────────────────────────────────────
   STAGE 3 · COLLABORATE · layout only
   ───────────────────────────────────────────────────────────── */
.sec-collaborate { background: radial-gradient(900px 500px at 50% 0%, rgba(217,54,127,.16), transparent 70%), linear-gradient(var(--deep), #160b33); }
.legends { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; margin-top: 46px; }
.hall { margin-top: clamp(70px, 9vw, 110px); }
.hall__row { display: flex; flex-wrap: wrap; justify-content: center; gap: 48px 60px; margin-top: 40px; }
.sponsors { margin-top: clamp(70px, 9vw, 110px); overflow-x: clip; overflow-clip-margin: 0; }

@media (max-width: 960px) { .legends { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .legends { grid-template-columns: 1fr; max-width: 360px; margin-inline: auto; } }