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861px){.topic-sheet{left:50%;right:auto;bottom:auto;top:12vh;width:440px;transform:translate(-50%);border-radius:18px;padding-bottom:16px}}.topic-sheet .more-sheet-handle{width:36px;height:4px;border-radius:999px;background:var(--line);margin:4px auto 10px}.topic-sheet-head{display:flex;align-items:center;justify-content:space-between;padding:0 4px 6px;font-size:17px}.topic-sheet-body{overflow-y:auto}.topic-group{margin-bottom:8px}.topic-group-label{font-family:IBM Plex Mono,monospace;font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--moss);padding:8px 6px 4px}.topic-row{display:flex;align-items:center;gap:6px;border-radius:12px}.topic-row.active{background:#e3ede5}.topic-row-main{flex:1;min-width:0;display:flex;align-items:center;gap:10px;padding:13px 10px;border:none;background:transparent;cursor:pointer;font-size:15.5px;color:var(--ink);text-align:left}.topic-row.active .topic-row-main{font-weight:600;color:var(--evergreen-deep)}.topic-row-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.topic-row-count{font-size:12px;color:var(--ink-soft);background:var(--canvas);padding:2px 8px;border-radius:999px}.topic-unread{width:8px;height:8px;border-radius:50%;background:var(--clay);flex-shrink:0}.topic-row-remove{border:none;background:#fbefe9;color:var(--alert);font-size:12.5px;font-weight:600;padding:7px 10px;border-radius:8px;margin-right:6px;cursor:pointer}.topic-add{width:100%;margin-top:6px;padding:13px;border:1px dashed var(--line);border-radius:12px;background:transparent;color:var(--evergreen);font-size:14.5px;font-weight:600;cursor:pointer}.topic-add-form{display:flex;flex-direction:column;gap:8px;margin-top:6px}.topic-add-form select{padding:11px 12px;border-radius:8px;border:1px solid var(--line);font-size:16px;background:var(--paper)}@media (max-width: 860px){.chat-page{margin-top:10px}.chat-panel{border-radius:14px;margin:0 -6px}.bubble{max-width:84%}}@media (max-width: 860px){.chat-panel.is-fixed{position:fixed;left:8px;right:8px;margin:0;z-index:15;max-width:none;height:auto}html.chat-lock,html.chat-lock body{overflow:hidden;overscroll-behavior:none}}.main-content>.row:first-child{position:relative;z-index:30}.chat-topic-wrap{position:relative;flex:1;min-width:0;display:flex}.chat-topic-wrap .chat-topic-btn{flex:1}.chat-topic-chevron{flex-shrink:0;transition:transform .16s var(--ease)}.chat-topic-chevron.open{transform:rotate(180deg)}.topic-menu{position:absolute;left:0;top:calc(100% + 6px);z-index:25;width:100%;min-width:240px;max-width:360px;max-height:min(62vh,460px);overflow-y:auto;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-sm);box-shadow:var(--shadow-md);padding:6px}.topic-menu-label{font-size:10.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--ink-soft);font-weight:700;padding:6px 10px 4px}.topic-menu-divider{border-top:1px solid var(--line);margin:4px 0}.topic-menu-item{display:flex;align-items:center;gap:4px;border-radius:6px}.topic-menu-item.active{background:var(--canvas)}.topic-menu-main{flex:1;min-width:0;display:flex;align-items:center;gap:8px;padding:9px 10px;border:none;background:transparent;border-radius:6px;font-size:14px;color:var(--ink);text-align:left;cursor:pointer}.topic-menu-main:hover{background:var(--canvas)}.topic-menu-item.active .topic-menu-main{font-weight:600}.topic-menu-count{font-size:11.5px;color:var(--ink-soft)}.topic-menu-remove{border:none;background:none;color:var(--alert);font-size:12.5px;font-weight:600;padding:6px 8px;border-radius:6px;cursor:pointer}.topic-menu-note{font-size:13px;color:var(--ink-soft);padding:6px 10px}.topic-menu-action{display:block;width:100%;text-align:left;border:none;background:none;padding:9px 10px;border-radius:6px;font-size:14px;color:var(--evergreen);cursor:pointer}.topic-menu-action:hover{background:var(--canvas)}.topic-menu-action.quiet{color:var(--ink-soft)}.topic-menu-form{display:flex;flex-direction:column;gap:8px;padding:6px 8px 8px}.topic-menu-form select{padding:10px 12px;border-radius:8px;border:1px solid var(--line);font-size:16px;background:var(--paper)}