/* 모션 연구소 공용 틀 — 위 머리줄 · 장면 탭 · 무대(남는 화면 전부) · 아래 설명줄 */
:root{--bg:#0b1020;--ink:#f3f4f8;--mute:#9aa3b8;--line:rgba(255,255,255,.12);--gold:#f0cf7a}
*{box-sizing:border-box;margin:0;padding:0}
html{overflow-x:clip}
body{background:var(--bg);color:var(--ink);font-family:Pretendard,"Malgun Gothic",sans-serif;-webkit-font-smoothing:antialiased}
.lab-top{position:fixed;inset:0 0 auto 0;z-index:20;display:flex;align-items:center;gap:14px;height:52px;padding:0 18px;background:rgba(11,16,32,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.lab-top a{color:var(--mute);text-decoration:none;font-size:14px;font-weight:700}.lab-top a:hover{color:var(--ink)}
.lab-top b{font-size:16px;font-weight:900}
.lab-tabs{position:fixed;top:52px;left:0;right:0;z-index:19;display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:10px 18px;background:rgba(11,16,32,.72);backdrop-filter:blur(10px)}
.lab-tabs::-webkit-scrollbar{display:none}
.lab-tabs button{flex:0 0 auto;font:800 14px Pretendard,sans-serif;color:var(--mute);background:transparent;border:1px solid var(--line);border-radius:99px;padding:9px 15px;cursor:pointer}
.lab-tabs button.on{color:#1a1305;background:var(--gold);border-color:var(--gold)}
.lab-stage{position:fixed;left:0;right:0;top:106px;bottom:84px;overflow:hidden;background:#000}
.lab-stage>*{position:absolute;inset:0}
.lab-cap{position:fixed;left:0;right:0;bottom:0;z-index:19;height:84px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 18px;background:var(--bg);border-top:1px solid var(--line)}
.lab-cap small{font-size:12px;color:var(--mute)}.lab-cap h2{font-size:17px;font-weight:900;margin-top:2px}.lab-cap p{font-size:14px;color:#cfd6e6;margin-top:2px}
.lab-cap button{flex:0 0 auto;font:900 15px Pretendard,sans-serif;color:#1a1305;background:var(--gold);border:0;border-radius:99px;padding:12px 20px;cursor:pointer}
@media (max-width:700px){
  .lab-top{height:48px;padding:0 12px}.lab-tabs{top:48px;padding:8px 12px}.lab-tabs button{font-size:13px;padding:8px 12px}
  .lab-stage{top:98px;bottom:104px}
  .lab-cap{height:104px;padding:0 12px;align-items:center}.lab-cap h2{font-size:15px}.lab-cap p{font-size:13px;line-height:1.45}
  .lab-cap button{padding:11px 14px;font-size:14px}
}
.mode-sw{position:absolute;top:14px;right:14px;z-index:50;display:flex;flex-direction:column;align-items:flex-end;gap:6px;pointer-events:none;font-family:Pretendard,system-ui,sans-serif}
.mode-seg{pointer-events:auto;display:flex;padding:3px;border-radius:999px;background:rgba(10,14,30,.72);backdrop-filter:blur(8px);box-shadow:0 4px 16px rgba(0,0,0,.25)}
.mode-seg button{border:0;background:none;color:#c9cfe0;font:600 13px/1 Pretendard,system-ui,sans-serif;padding:9px 14px;border-radius:999px;cursor:pointer}
.mode-seg button.on{background:#f5c96b;color:#14182a}
.mode-note{margin:0;font:500 11.5px/1.4 Pretendard,system-ui,sans-serif;color:#fff;background:rgba(10,14,30,.6);padding:5px 10px;border-radius:8px;max-width:min(360px,70vw);text-align:right}
@media (max-width:700px){.mode-sw{top:10px;right:10px}.mode-seg button{font-size:12px;padding:8px 11px}.mode-note{font-size:11px}}
.mode-sweep{position:absolute;top:-10%;left:0;width:180px;height:120%;margin-left:-90px;z-index:40;pointer-events:none;opacity:0;transition:opacity .2s;background:linear-gradient(90deg,transparent 0,rgba(255,250,235,0) 38%,rgba(255,250,235,.55) 47%,rgba(255,255,255,.95) 50%,rgba(255,250,235,.55) 53%,rgba(255,250,235,0) 62%,transparent 100%);will-change:transform}