:root{--bg: #f2f4f7;--panel: #ffffff;--panel-2: #f7f8fa;--border: #e5e8ec;--text: #17181c;--sub: #8a9099;--primary: #12b7f5;--primary-dark: #0a9ad6;--danger: #e5484d;--radius: 14px;--shadow: 0 6px 24px rgba(16, 24, 40, .08);color-scheme:light}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overscroll-behavior:none}button{font:inherit;color:inherit;cursor:pointer}input,textarea{font:inherit;color:inherit}ul{list-style:none;margin:0;padding:0}.btn{border:none;border-radius:10px;padding:10px 16px;background:var(--panel-2);font-weight:600;transition:filter .15s 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12px}.conv{width:100%;display:flex;align-items:center;gap:10px;padding:10px;border:none;background:transparent;border-radius:12px;text-align:left}.conv:hover{background:var(--panel-2)}.conv--active{background:#e8f6fe}.conv-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}.conv-top,.conv-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px}.conv-name{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-time{font-size:11px;color:var(--sub);flex:none}.conv-preview{font-size:12px;color:var(--sub);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat{flex:1;min-width:0;display:flex;flex-direction:column;background:var(--bg);padding-top:env(safe-area-inset-top)}.chat--empty{display:grid;place-items:center}.empty{text-align:center;color:var(--sub);display:flex;flex-direction:column;gap:14px;align-items:center}.chat-header{display:flex;align-items:center;gap:6px;padding:10px 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.file-card{background:#e8f6fe}.file-icon{font-size:22px;line-height:1;flex:none}.file-info{display:flex;flex-direction:column;gap:2px;min-width:0;flex:1}.file-name{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-size{font-size:11px;color:var(--sub)}.file-dl{flex:none;font-size:12px;color:var(--primary-dark);font-weight:600}.bubble--recalled,.bubble--mine.bubble--recalled{background:transparent;box-shadow:none;color:var(--sub);font-size:13px;padding:4px 0}.recalled-text{font-style:italic}.typing-hint{padding:4px 16px 0;font-size:12px;color:var(--sub);background:var(--panel)}.overlay--sheet{place-items:end center;padding:0}.sheet{width:100%;max-width:420px;background:var(--panel);border-radius:18px 18px 0 0;padding:8px 8px calc(8px + 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img{width:100%;height:100%;object-fit:cover;border-radius:inherit;display:block}.avatar--muted{background:var(--panel-2);color:var(--sub);font-size:18px}.me--button{border:none;background:transparent;padding:0;text-align:left;border-radius:12px}.me--button:hover{background:var(--panel-2)}.profile-row{display:flex;align-items:center;gap:14px}.avatar-edit{position:relative;border:none;background:transparent;padding:0;border-radius:18px;overflow:hidden;flex:none}.avatar-edit-mask{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;background:#00000073;color:#fff;font-size:12px;opacity:0;transition:opacity .15s ease}.avatar-edit:hover .avatar-edit-mask{opacity:1}.profile-info{display:flex;flex-direction:column;gap:2px;min-width:0}.profile-name{font-size:17px;font-weight:700}.profile-username{font-size:12px;color:var(--sub)}.mute-mark{font-size:11px;margin-right:4px;opacity:.7}.badge--mention{background:#f5a524;color:#fff;font-size:12px}.conv--plain .conv-body{justify-content:center}.sheet-title{font-size:12px;color:var(--sub);padding:8px 14px 4px}.search-results{display:flex;flex-direction:column;gap:2px;max-height:50vh;overflow-y:auto}.search-item{width:100%;display:flex;flex-direction:column;gap:3px;border:none;background:transparent;text-align:left;padding:8px 10px;border-radius:10px}.search-item:hover{background:var(--panel-2)}.search-conv{font-size:11px;color:var(--primary-dark);font-weight:600}.search-text{font-size:14px;word-break:break-word;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.search-time{font-size:11px;color:var(--sub)}.emoji-panel{background:var(--panel);border-top:1px solid var(--border);max-height:180px;overflow-y:auto}.emoji-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(38px,1fr));gap:2px;padding:6px}.emoji-cell{border:none;background:transparent;font-size:20px;line-height:1;padding:6px 0;border-radius:8px;cursor:pointer}.emoji-cell:hover{background:var(--panel-2)}.mention-panel{background:var(--panel);border-top:1px solid var(--border);max-height:180px;overflow-y:auto;padding:6px;display:flex;flex-direction:column;gap:2px}.mention-row{display:flex;align-items:center;gap:8px;border:none;background:transparent;padding:6px 8px;border-radius:8px;font-size:14px;text-align:left}.mention-row:hover{background:var(--panel-2)}.mention{color:var(--primary-dark);font-weight:600}.bubble--mine .mention{color:#fff;text-decoration:underline}.mention--me{color:#e8590c;background:#fff4e6;border-radius:4px;padding:0 2px}.bubble--mine .mention--me{color:#fff;background:#ffffff40}.quote{display:flex;flex-direction:column;gap:1px;border-left:3px solid rgba(0,0,0,.15);padding:2px 0 2px 8px;margin-bottom:6px;opacity:.85}.bubble--mine .quote{border-left-color:#ffffff80}.quote-name{font-size:11px;font-weight:700}.quote-text{font-size:12px;opacity:.85;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:240px}.reply-bar{display:flex;align-items:center;gap:8px;background:var(--panel);border-top:1px solid var(--border);padding:6px 12px}.reply-bar-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px;border-left:3px solid var(--primary);padding-left:8px}.reply-bar-name{font-size:11px;color:var(--primary-dark);font-weight:600}.reply-bar-text{font-size:12px;color:var(--sub);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}@media(max-width:760px){.sidebar{width:100%;border-right:none}.app[data-view=chat] .sidebar,.app[data-view=list] .chat{display:none}.chat-header .back{display:grid}.bubble-wrap{max-width:78%}.dialog{max-width:none;max-height:90vh}}@media(prefers-color-scheme:dark){:root{--bg: #0f1115;--panel: #171a20;--panel-2: #1e222a;--border: #272c35;--text: #e8eaed;--sub: #8b929d;color-scheme:dark}.login{background:linear-gradient(170deg,#10222e 0%,var(--bg) 55%)}.avatar{background:linear-gradient(140deg,#1d3b4d,#164b63);color:#7fd4f7}.conv--active,.conv-item--active{background:#17303d}.tag{background:#17303d;color:#7fd4f7}.day-divider span{background:#ffffff14}.chip,.btn-sm{background:#17303d;color:#7fd4f7}.btn-danger{background:#2a1a1c}.messages,.chat{background:var(--bg)}}