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solid var(--hairline);border-radius:12px;align-items:center;gap:12px;padding:10px 14px;display:flex}.leader-row__rank{background:var(--mist);border-radius:8px;place-items:center;width:28px;height:28px;font-size:13px;font-weight:700;display:grid}.leader-row:first-child .leader-row__rank{background:var(--gold);color:#fff}.answer-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.answer-tile{color:#fff;border-radius:14px;padding:18px;font-size:16px;font-weight:600}.answer-tile.correct{box-shadow:0 0 0 6px var(--success);outline:3px solid #fff}.chat{height:calc(100vh - var(--topbar-h) - 56px);grid-template-columns:320px minmax(0,1fr);min-height:480px;display:grid;overflow:hidden}.chat__list{border-right:1px solid var(--hairline);overflow-y:auto}.chat__item{cursor:pointer;border-bottom:1px solid var(--hairline);text-align:left;background:0 0;border-top:0;border-left:0;border-right:0;align-items:center;gap:10px;width:100%;padding:12px 14px;display:flex}.chat__item:hover{background:var(--mist)}.chat__item.active{background:var(--azure-soft)}.chat__pane{flex-direction:column;min-width:0;display:flex}.chat__messages{background:var(--mist);flex-direction:column;flex:1;gap:8px;padding:20px;display:flex;overflow-y:auto}.bubble{background:var(--paper);border:1px solid var(--hairline);white-space:pre-wrap;word-break:break-word;border-radius:14px;align-self:flex-start;max-width:70%;padding:8px 12px}.bubble.mine{background:var(--azure);color:#fff;border-color:var(--azure);align-self:flex-end}.bubble__meta{opacity:.7;margin-top:2px;font-size:11px}.chat__compose{border-top:1px solid var(--hairline);background:var(--paper);gap:8px;padding:12px;display:flex}.unread{background:var(--azure);color:#fff;border-radius:10px;padding:1px 7px;font-size:11px;font-weight:600}@media (width<=760px){.chat{grid-template-columns:1fr}.chat.has-active .chat__list,.chat:not(.has-active) .chat__pane{display:none}}.divider-row{display:flex}.divider-row>*{border-left:1px solid var(--hairline);flex:1;padding:0 20px}.divider-row>:first-child{border-left:0;padding-left:0}.link-box{border:1px solid var(--hairline);background:var(--mist);border-radius:12px;align-items:center;gap:8px;padding:6px 6px 6px 14px;display:flex}.link-box code{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:13px;overflow:hidden}.list-plain{margin:0;padding:0;list-style:none}.list-plain li{border-bottom:1px solid var(--hairline);align-items:center;gap:12px;padding:10px 0;display:flex}.list-plain li:last-child{border-bottom:0}.section-title{text-transform:uppercase;letter-spacing:.06em;color:var(--slate);margin-bottom:8px;font-size:13px;font-weight:600}.grid-main{grid-template-columns:minmax(0,2fr) minmax(0,1fr)}@media (width<=1100px){.grid-main{grid-template-columns:minmax(0,1fr)}}.board{grid-template-rows:auto minmax(0,1fr);grid-template-columns:132px minmax(0,1fr);gap:12px;height:100%;min-height:420px;display:grid}.board__toolbar{background:var(--paper);border:1px solid var(--hairline);border-radius:14px;flex-wrap:wrap;grid-column:1/-1;align-items:center;gap:6px;padding:6px 8px;display:flex}.board__sep{background:var(--hairline);width:1px;height:24px;margin:0 4px}.tool-btn{cursor:pointer;width:34px;height:34px;color:var(--slate);background:0 0;border:0;border-radius:9px;place-items:center;display:grid}.tool-btn:hover:not(:disabled){background:var(--mist);color:var(--navy)}.tool-btn.active{background:var(--azure-soft);color:var(--azure)}.tool-btn:disabled{opacity:.4;cursor:not-allowed}.swatch{width:22px;height:22px;box-shadow:0 0 0 1px var(--hairline);cursor:pointer;border:2px solid #fff;border-radius:50%;padding:0}.swatch.active{box-shadow:0 0 0 2px var(--azure)}.board__thumbs{flex-direction:column;gap:8px;padding-right:4px;display:flex;overflow-y:auto}.board-thumb{aspect-ratio:16/9;border:2px solid var(--hairline);cursor:pointer;background:#fff;border-radius:10px;flex-shrink:0;width:100%;padding:0;position:relative;overflow:hidden}.board-thumb.active{border-color:var(--azure)}.board-thumb img,.board-thumb canvas{object-fit:contain;width:100%;height:100%;position:absolute;inset:0}.board-thumb__num{color:var(--slate);background:#ffffffd9;border-radius:4px;padding:0 4px;font-size:10px;position:absolute;bottom:2px;left:4px}.board-thumb__mark{color:var(--danger);filter:drop-shadow(0 1px 1px #00000040);position:absolute;top:0;right:4px}.board-thumb.bookmarked{border-color:var(--danger)}.board-thumb.bookmarked.active{border-color:var(--azure)}.swatch--picker{background:conic-gradient(red,#ff0,#0f0,#0ff,#00f,#f0f,red);position:relative;overflow:hidden}.swatch--picker input{opacity:0;cursor:pointer;position:absolute;inset:-6px}.width-range{width:84px;accent-color:var(--azure)}.width-preview{place-items:center;min-width:34px;display:grid}.board-stage{background:var(--mist);border:1px solid var(--hairline);border-radius:14px;justify-content:center;align-items:center;width:100%;height:100%;min-height:0;display:flex;overflow:hidden}.board-page{box-shadow:var(--shadow-card);background:#fff;position:relative}.board-page img{object-fit:contain;-webkit-user-select:none;user-select:none;pointer-events:none;width:100%;height:100%;position:absolute;inset:0}.board-page canvas{position:absolute;inset:0}.board-cursor{pointer-events:none;background:#d64545bf;border-radius:50%;width:14px;height:14px;margin:-7px 0 0 -7px;transition:left 60ms linear,top 60ms linear;position:absolute;box-shadow:0 0 0 4px #d6454533}@media (width<=760px){.board{grid-template-rows:auto minmax(0,1fr) auto;grid-template-columns:minmax(0,1fr)}.board__thumbs{flex-direction:row;order:3;overflow-x:auto}.board-thumb{width:96px}}.room{height:calc(100vh - var(--topbar-h) - 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var(--hairline);background:var(--mist);height:40px;color:var(--slate);cursor:pointer;border-radius:10px;align-items:center;gap:6px;padding:0 14px;font-weight:500;display:inline-flex}.room-ctl.on{background:var(--azure-soft);color:var(--azure);border-color:#0000}.room__side{flex-direction:column;min-height:0;display:flex;overflow:hidden}.room__people{flex:1;overflow-y:auto}.room-chat{flex-direction:column;flex:1;min-height:0;display:flex}.room-chat__list{background:var(--mist);flex-direction:column;flex:1;gap:8px;padding:12px;display:flex;overflow-y:auto}.video-grid{grid-auto-rows:minmax(0,1fr);gap:8px;height:100%;display:grid}.video-share{grid-template-rows:minmax(0,1fr) 110px;gap:8px;height:100%;display:grid}.video-strip{gap:8px;display:flex;overflow-x:auto}.video-strip .tile{flex-shrink:0;width:180px}.tile{background:var(--navy);border:2px solid #0000;border-radius:14px;min-height:0;position:relative;overflow:hidden}.tile.speaking{border-color:var(--success)}.tile video{background:#000;width:100%;height:100%;position:absolute;inset:0}.tile__avatar{place-items:center;display:grid;position:absolute;inset:0}.tile__name{color:#fff;background:#08213999;border-radius:6px;align-items:center;gap:4px;padding:2px 8px;font-size:12px;display:inline-flex;position:absolute;bottom:8px;left:8px}@media (width<=1000px){.room{height:auto}.room__body{grid-template-columns:minmax(0,1fr)}.room__stage{min-height:420px}.room__side{height:420px}}.nav-badge{background:var(--danger);color:#fff;border-radius:10px;place-items:center;min-width:20px;height:20px;margin-left:auto;padding:0 6px;font-size:11px;font-weight:700;display:grid;box-shadow:0 0 0 3px #d6454540}.protected-video{-webkit-user-select:none;user-select:none;background:#000;border-radius:12px;position:relative;overflow:hidden}.protected-video video{background:#000;width:100%;max-height:420px;display:block}.protected-video__wm{color:#ffffff47;pointer-events:none;white-space:nowrap;text-shadow:0 1px 2px #0006;font-size:12px;font-weight:600;transition:left .6s,top .6s;position:absolute}.protected-video__err{color:#fff;text-align:center;background:#082139cc;place-items:center;padding:16px;display:grid;position:absolute;inset:0}.leak-drop{text-align:center;background:var(--mist);border:1.5px dashed #c5d3e6;border-radius:16px;flex-direction:column;align-items:center;gap:14px;padding:40px 24px;transition:border-color .15s,background .15s;display:flex}.leak-drop.over{border-color:var(--azure);background:var(--azure-soft)}.table tbody tr.leak-hit td{background:var(--danger-soft)}.leak-details{cursor:pointer;width:100%;color:var(--slate);text-align:left;background:0 0;border:0;align-items:center;gap:6px;padding:12px 20px;font-weight:500;display:flex}.leak-details:hover{color:var(--navy)}