:root{--text:#6b6375;--text-h:#08060d;--bg:#fff;--border:#e5e4e7;--code-bg:#f4f3ec;--accent:#aa3bff;--accent-bg:#aa3bff1a;--accent-border:#aa3bff80;--social-bg:#f4f3ec80;--shadow:#0000001a 0 10px 15px -3px, #0000000d 0 4px 6px -2px;--sans:system-ui, "Segoe UI", Roboto, sans-serif;--heading:system-ui, "Segoe UI", Roboto, sans-serif;--mono:ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}@media (width<=1024px){:root{font-size:16px}}@media (prefers-color-scheme:dark){:root{--text:#9ca3af;--text-h:#f3f4f6;--bg:#16171d;--border:#2e303a;--code-bg:#1f2028;--accent:#c084fc;--accent-bg:#c084fc26;--accent-border:#c084fc80;--social-bg:#2f303a80;--shadow:#0006 0 10px 15px -3px, #00000040 0 4px 6px -2px}#social .button-icon{filter:invert()brightness(2)}}body{margin:0}#root{box-sizing:border-box;flex-direction:column;min-height:100svh;display:flex}h1,h2{font-family:var(--heading);color:var(--text-h);font-weight:500}h1{letter-spacing:-1.68px;margin:32px 0;font-size:56px}@media (width<=1024px){h1{margin:20px 0;font-size:36px}}h2{letter-spacing:-.24px;margin:0 0 8px;font-size:24px;line-height:118%}@media (width<=1024px){h2{font-size:20px}}p{margin:0}code,.counter{font-family:var(--mono);color:var(--text-h);border-radius:4px;display:inline-flex}code{background:var(--code-bg);padding:4px 8px;font-size:15px;line-height:135%}*{box-sizing:border-box;margin:0;padding:0}:root{--wechat-green:#07c160;--wechat-green-hover:#06ad56;--wechat-gray-bg:#ededed;--wechat-dark-gray:#f5f5f5;--wechat-sidebar-bg:#fafafa;--wechat-border:#e5e5e5;--wechat-text-primary:#000;--wechat-text-secondary:#999;--wechat-text-light:#b2b2b2;--wechat-white:#fff;--wechat-msg-own:#95ec69;--wechat-msg-other:#fff;--wechat-shadow:#0000000d}[data-theme=light]{--bg-primary:#ededed;--bg-secondary:#fff;--bg-tertiary:#fafafa;--bg-hover:#f0f0f0;--text-primary:#000;--text-secondary:#999;--text-muted:#b2b2b2;--border-color:#e5e5e5;--shadow-color:#0000000d;--msg-bubble-own:#95ec69;--msg-bubble-other:#fff;--sidebar-bg:#fafafa;--search-bg:#ebeced}[data-theme=dark]{--bg-primary:#1f1f1f;--bg-secondary:#2b2b2b;--bg-tertiary:#262626;--bg-hover:#3a3a3a;--text-primary:#fff;--text-secondary:#999;--text-muted:#888;--border-color:#3a3a3a;--shadow-color:#0000004d;--msg-bubble-own:#176d19;--msg-bubble-other:#3a3a3a;--sidebar-bg:#262626;--search-bg:#1a1a1a}body{background:var(--bg-primary);min-height:100vh;color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,PingFang 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var(--border-color);background:var(--bg-secondary);color:var(--text-primary);border-radius:6px;outline:none;padding:14px 16px;font-size:15px;transition:border-color .2s}.auth-box input::placeholder{color:var(--text-secondary)}.auth-box input:focus{border-color:var(--wechat-green)}.auth-box button{background:var(--wechat-green);color:#fff;cursor:pointer;border:none;border-radius:6px;margin-top:8px;padding:14px;font-size:16px;font-weight:500;transition:background .2s}.auth-box button:hover{background:var(--wechat-green-hover)}.auth-box p{text-align:center;color:var(--text-secondary);margin-top:24px;font-size:14px}.auth-box .link{color:var(--wechat-green);cursor:pointer;font-weight:500;text-decoration:none}.auth-box .link:hover{text-decoration:underline}.auth-api-url{text-align:left;flex-direction:column;gap:6px;display:flex}.auth-api-url label{color:var(--text-secondary);font-size:13px;font-weight:500}.auth-api-url input{box-sizing:border-box;border:1px solid var(--border-color);background:var(--bg-secondary);width:100%;color:var(--text-primary);border-radius:6px;outline:none;padding:12px 14px;font-size:13px;transition:border-color .2s}.auth-api-url input:focus{border-color:var(--wechat-green)}.auth-api-url-hint{color:var(--text-secondary);margin:0;font-size:12px;line-height:1.45}.auth-api-url-hint code{background:var(--bg-hover);border-radius:4px;padding:1px 4px;font-size:11px}.error{color:#fa5151;text-align:center;background:#fa51511a;border:1px solid #fa51514d;border-radius:6px;margin-bottom:15px;padding:10px 15px;font-size:14px}.chat-container{background:var(--bg-primary);height:100vh;max-height:100vh;display:flex;overflow:hidden}.wechat-sidebar-root{border-right:1px solid var(--border-color);flex-shrink:0;height:100%;min-height:0;display:flex}.sidebar-rail{background:#2e2e2e;flex-direction:column;align-items:stretch;width:56px;min-width:56px;display:flex}.sidebar-rail-top{flex-direction:column;flex:1;align-items:center;gap:4px;min-height:0;padding:12px 0 8px;display:flex}.sidebar-rail-bottom{border-top:1px solid #ffffff0f;flex-direction:column;flex-shrink:0;align-items:center;padding:8px 0 12px;display:flex}.rail-btn-footer{margin:0 auto}[data-theme=dark] .sidebar-rail{background:#1a1a1a}.rail-btn{cursor:pointer;color:#e0e0e0;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;width:44px;height:44px;font-size:20px;transition:background .15s;display:flex;position:relative}.rail-btn:hover{background:#ffffff14}.rail-btn.active{background:#07c16040}.rail-icon{line-height:1}.rail-badge{color:#fff;text-align:center;background:#fa5151;border-radius:8px;min-width:16px;height:16px;padding:0 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.2s}.create-group-btn:hover{background:var(--bg-hover)}.users-list{flex:1;min-height:0;padding:0;overflow-y:auto}.user-item{cursor:pointer;border-radius:0;align-items:center;margin-bottom:0;padding:10px 12px;transition:background .2s;display:flex;position:relative}.user-item:hover,.user-item.selected{background:var(--bg-hover)}.user-item.has-unread{background:0 0}.user-avatar{background:linear-gradient(135deg,#1da1f2,#06f);border-radius:50%;justify-content:center;align-items:center;width:44px;height:44px;margin-right:10px;font-size:18px;font-weight:500;display:flex;position:relative;overflow:hidden}.user-avatar.large{border-radius:50%;width:50px;height:50px;font-size:20px}.user-avatar.small{border-radius:50%;width:36px;height:36px;font-size:14px}.user-avatar img{object-fit:cover;width:100%;height:100%}.group-avatar{background:linear-gradient(135deg,#ff6b6b,orange)}.unread-badge{color:#fff;z-index:10;background:#fa5151;border-radius:9px;justify-content:center;align-items:center;min-width:18px;height:18px;padding:0 5px;font-size:11px;font-weight:600;display:flex;position:absolute;top:4px;right:0}.user-info{flex-direction:column;flex:1;justify-content:center;display:flex;overflow:hidden}.user-info-top{justify-content:space-between;align-items:center;margin-bottom:4px;display:flex}.user-name{text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:15px;font-weight:500;overflow:hidden}.message-time{color:var(--text-secondary);margin-left:10px;font-size:12px}.user-info-bottom{justify-content:space-between;align-items:center;display:flex}.last-message{color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;flex:1;margin-left:10px;font-size:13px;overflow:hidden}.status{color:var(--text-secondary);white-space:nowrap;font-size:12px}.user-preview{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.status.online{color:var(--wechat-green)}.status.online:before{content:"";background:var(--wechat-green);border-radius:50%;width:8px;height:8px;margin-right:4px;display:inline-block}.status.offline:before{content:"";background:var(--text-muted);border-radius:50%;width:8px;height:8px;margin-right:4px;display:inline-block}.chat-area{background:var(--bg-primary);flex-direction:column;flex:1;min-height:0;display:flex;position:relative;overflow:hidden}.chat-header{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);z-index:10;justify-content:space-between;align-items:center;padding:10px 16px;display:flex;position:sticky;top:0}.chat-user-info{align-items:center;display:flex}.chat-user-info .user-avatar{border-radius:50%;width:36px;height:36px;font-size:14px}.chat-user-info h3{margin:0 0 2px 12px;font-size:16px;font-weight:600}.chat-user-info .status{margin-left:12px;font-size:12px}.chat-header-actions{align-items:center;gap:8px;display:flex}.search-messages-btn{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;border-radius:4px;padding:6px;font-size:18px;transition:background .2s}.search-messages-btn:hover{background:var(--bg-hover)}.group-info-btn{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;border-radius:4px;padding:6px;font-size:18px;transition:background .2s}.group-info-btn:hover{background:var(--bg-hover)}.messages-search-panel{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);padding:10px 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.message-content:after{content:"";border-left:8px solid var(--msg-bubble-own);border-top:8px solid #0000;border-bottom:8px solid #0000;width:0;height:0;position:absolute;bottom:4px;right:-6px}.message.other .message-content:after{content:"";border-right:8px solid var(--msg-bubble-other);border-top:8px solid #0000;border-bottom:8px solid #0000;width:0;height:0;position:absolute;bottom:4px;left:-6px}.message-content.deleted{color:var(--text-secondary);background:#80808033;font-size:13px;font-style:italic}.message-content.image{border-radius:6px;padding:4px}.message-content.image img{border-radius:4px;max-width:250px;max-height:250px;display:block}.message-content.file{cursor:pointer;min-width:200px;padding:12px}.file-info{align-items:center;gap:10px;padding:0;display:flex}.file-icon{font-size:32px}.file-name{color:var(--text-primary);font-size:14px;text-decoration:none}.message-info{justify-content:flex-end;align-items:center;gap:8px;margin-top:4px;display:flex}.time{color:var(--text-muted);background:#0000000d;border-radius:10px;padding:2px 6px;font-size:11px}.message.other .message-info{justify-content:flex-start}.delete-btn{color:#fff;cursor:pointer;background:#f003;border:none;border-radius:4px;padding:3px 8px;font-size:11px;transition:background .2s}.delete-btn:hover{background:#f006}.countdown{color:#ff6b6b;background:#ff6b6b26;border-radius:4px;padding:2px 6px;font-size:11px;font-weight:600}.reply-btn{color:#fff;cursor:pointer;background:#fff3;border:none;border-radius:4px;padding:3px 8px;font-size:11px;transition:background .2s}.reply-btn:hover{background:#ffffff4d}.reply-preview{border-left:3px solid var(--wechat-green);cursor:pointer;background:#0000001a;border-radius:4px;margin-bottom:8px;padding:8px 12px;transition:background .2s}.reply-preview:hover{background:#00000026}.reply-sender{color:var(--wechat-green);margin-bottom:2px;font-size:12px;font-weight:500;display:block}.reply-content{color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.replying-to{background:#07c1601a;border:1px solid #07c16033;border-radius:6px;justify-content:space-between;align-items:center;margin-bottom:8px;padding:8px 12px;display:flex}.replying-content{flex:1;overflow:hidden}.replying-label{color:var(--wechat-green);font-size:12px;font-weight:500;display:block}.replying-text{color:var(--text-secondary);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.cancel-reply{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;margin-left:8px;padding:0 4px;font-size:18px;transition:color .2s}.cancel-reply:hover{color:#ff4757}.message-content.highlight{animation:2s highlight-msg}@keyframes highlight-msg{0%,to{background:inherit}50%{background:#07c16033}}.typing-indicator{color:var(--text-secondary);padding:10px 16px;font-size:13px;font-style:italic}.file-preview{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);align-items:center;gap:10px;padding:10px 16px;display:flex}.file-preview img{border-radius:4px;max-width:80px;max-height:80px}.file-preview button{color:#ff4757;cursor:pointer;background:#ff000026;border:none;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:14px;display:flex}.message-input-container{background:var(--bg-secondary);border-top:1px solid var(--border-color);z-index:10;align-items:center;gap:8px;padding:10px 16px;display:flex;position:sticky;bottom:0}.attach-btn{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;border-radius:4px;padding:8px;font-size:22px;transition:background .2s}.attach-btn:hover{background:var(--bg-hover)}.emoji-picker-container{position:relative}.emoji-btn{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;border-radius:4px;padding:8px;font-size:22px;transition:background .2s}.emoji-btn:hover{background:var(--bg-hover)}.emoji-picker{background:var(--bg-secondary);border:1px solid var(--border-color);width:300px;max-height:260px;box-shadow:0 4px 20px var(--shadow-color);z-index:100;border-radius:8px;grid-template-columns:repeat(8,1fr);gap:4px;padding:12px;display:grid;position:absolute;bottom:60px;left:50%;overflow-y:auto;transform:translate(-50%)}.emoji-item{cursor:pointer;background:0 0;border:none;border-radius:4px;padding:6px;font-size:20px;transition:background .2s}.emoji-item:hover{background:var(--bg-hover)}.selected-file{color:var(--wechat-green);background:#07c1601a;border-radius:4px;padding:4px 10px;font-size:13px}.message-input-container input[type=text]{border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-primary);resize:none;border-radius:20px;outline:none;flex:1;min-height:40px;max-height:120px;padding:10px 16px;font-size:15px;line-height:1.5;transition:all .2s}.message-input-container input[type=text]:focus{border-color:var(--wechat-green);box-shadow:0 0 0 2px #07c1601a}.message-input-container input[type=text]::placeholder{color:var(--text-secondary)}.send-btn{background:var(--wechat-green);color:#fff;cursor:pointer;text-align:center;border:none;border-radius:20px;min-width:60px;height:40px;padding:10px 20px;font-size:15px;font-weight:500;transition:background .2s}.send-btn:hover{background:var(--wechat-green-hover)}.send-btn:disabled{background:var(--text-secondary);cursor:not-allowed}.voice-btn{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;border-radius:4px;padding:8px;font-size:22px;transition:background .2s}.voice-btn:hover{background:var(--bg-hover)}.recording-controls{align-items:center;gap:10px;display:flex}.recording-time{color:#ff4757;font-size:14px;font-weight:600}.stop-recording-btn{background:var(--wechat-green);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:10px 16px;font-size:16px;font-weight:500}.cancel-recording-btn{color:#ff4757;cursor:pointer;background:#ff47571a;border:none;border-radius:6px;padding:10px 16px;font-size:16px;font-weight:500}.message-content.voice{align-items:center;gap:10px;min-width:100px;padding:10px 14px;display:flex}.play-voice-btn{cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px;font-size:20px;transition:background .2s}.play-voice-btn:hover{background:#0000001a}.voice-duration{color:var(--text-secondary);font-size:13px}.no-chat-selected{color:var(--text-secondary);background:var(--bg-primary);flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex}.no-chat-selected h2{margin-bottom:10px;font-size:20px;font-weight:400}.no-chat-selected p{font-size:14px}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#00000026;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#00000040}[data-theme=dark] ::-webkit-scrollbar-thumb{background:#ffffff26}[data-theme=dark] ::-webkit-scrollbar-thumb:hover{background:#ffffff40}.avatar-upload{cursor:pointer}.group-info-panel{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);max-height:300px;padding:16px;overflow-y:auto}.group-info-panel h4{color:var(--text-primary);margin:12px 0 8px;font-size:14px;font-weight:500}.group-info-panel .announcement{background:var(--bg-hover);border-radius:6px;margin-bottom:12px;padding:10px 12px;font-size:14px;line-height:1.5}.group-info-panel .no-announcement{color:var(--text-secondary);margin-bottom:12px;font-size:14px}.announcement-form{gap:8px;margin-bottom:16px;display:flex}.announcement-form input{border:1px solid var(--border-color);background:var(--bg-secondary);color:var(--text-primary);border-radius:6px;outline:none;flex:1;padding:8px 12px;font-size:14px}.announcement-form input:focus{border-color:var(--wechat-green)}.announcement-form button{background:var(--wechat-green);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:8px 16px;font-size:14px;font-weight:500}.announcement-form button:hover{background:var(--wechat-green-hover)}.member-list{flex-direction:column;gap:6px;display:flex}.member-item{background:var(--bg-hover);border-radius:6px;align-items:center;gap:10px;padding:8px 10px;display:flex}.member-name{flex:1;font-size:14px}.member-role{color:var(--text-secondary);background:#0000000d;border-radius:4px;padding:2px 8px;font-size:12px}.set-admin-btn{background:var(--wechat-green);color:#fff;cursor:pointer;border:none;border-radius:4px;padding:4px 10px;font-size:12px;font-weight:500}.set-admin-btn:hover{background:var(--wechat-green-hover)}.sender-name{color:var(--text-secondary);margin-bottom:4px;font-size:12px;display:block}.add-friend-modal-desc{color:var(--text-secondary);margin:0 0 14px;font-size:13px;line-height:1.5}.add-friend-modal-results{border:1px solid var(--border-color);background:var(--bg-primary);border-radius:8px;min-height:120px;max-height:280px;margin:12px 0 8px;overflow-y:auto}.add-friend-modal-empty{text-align:center;color:var(--text-secondary);margin:0;padding:20px 16px;font-size:14px}.add-friend-modal-row{border-bottom:1px solid var(--border-color);align-items:center;gap:10px;padding:10px 12px;display:flex}.add-friend-modal-row:last-child{border-bottom:none}.add-friend-modal-name{color:var(--text-primary);text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:15px;overflow:hidden}.modal-overlay{z-index:1000;background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:var(--bg-secondary);width:90%;max-width:380px;max-height:80vh;box-shadow:0 8px 32px var(--shadow-color);border-radius:12px;padding:24px;overflow-y:auto}.modal h3{text-align:center;margin:0 0 20px;font-size:18px;font-weight:600}.modal h4{color:var(--text-secondary);margin:20px 0 10px;font-size:14px;font-weight:500}.modal input[type=text]{border:1px solid var(--border-color);background:var(--bg-secondary);width:100%;color:var(--text-primary);box-sizing:border-box;border-radius:6px;outline:none;padding:12px 14px;font-size:15px}.modal input[type=text]:focus{border-color:var(--wechat-green)}.member-selector{flex-direction:column;gap:6px;max-height:200px;display:flex;overflow-y:auto}.member-checkbox{background:var(--bg-hover);cursor:pointer;border-radius:6px;align-items:center;gap:10px;padding:10px 12px;display:flex}.member-checkbox input{cursor:pointer;width:18px;height:18px;accent-color:var(--wechat-green)}.member-checkbox span{color:var(--text-primary);font-size:14px}.modal-buttons{gap:10px;margin-top:24px;display:flex}.modal-buttons button{cursor:pointer;border:none;border-radius:6px;flex:1;padding:12px;font-size:15px;font-weight:500;transition:background .2s}.modal-buttons button:first-child{background:var(--bg-hover);color:var(--text-primary)}.modal-buttons button:first-child:hover{background:var(--border-color)}.modal-buttons button.primary{background:var(--wechat-green);color:#fff}.modal-buttons button.primary:hover{background:var(--wechat-green-hover)}.wechat-menu{border-bottom:1px solid var(--border-color);flex-direction:column;padding:8px 12px;display:flex}.menu-item{cursor:pointer;color:var(--text-primary);text-align:left;background:0 0;border:none;border-radius:6px;align-items:center;gap:12px;padding:12px 16px;font-size:15px;font-weight:500;transition:background .2s;display:flex;position:relative}.menu-item:hover,.menu-item.active{background:var(--bg-hover)}.menu-icon{text-align:center;width:28px;font-size:20px}.menu-text{flex:1}.menu-badge{color:#fff;background:#fa5151;border-radius:9px;justify-content:center;align-items:center;min-width:18px;height:18px;padding:0 5px;font-size:11px;font-weight:600;display:flex}.main-content{background:var(--bg-primary);flex-direction:column;flex:1;min-width:0;min-height:0;display:flex;overflow:hidden}.contacts-list,.moments-sidebar,.settings-sidebar{flex-direction:column;flex:1;display:flex;overflow:hidden}.settings-sidebar-nav-wrap{min-height:0}.settings-sidebar-nav{flex-direction:column;flex:1;gap:2px;min-height:0;padding:8px 12px 12px;display:flex;overflow-y:auto}.settings-sidebar-nav-btn{box-sizing:border-box;text-align:left;width:100%;color:var(--text-primary);cursor:pointer;background:0 0;border:none;border-radius:6px;padding:12px 16px;font-family:inherit;font-size:15px;line-height:1.3;transition:background .15s,color .15s,box-shadow .15s}.settings-sidebar-nav-btn:hover{background:var(--bg-hover)}.settings-sidebar-nav-btn.active{background:var(--bg-hover);color:var(--wechat-green);box-shadow:inset 3px 0 0 var(--wechat-green);font-weight:600}.settings-sidebar-nav-btn:focus-visible{outline:2px solid var(--wechat-green);outline-offset:2px}.settings-list{flex:1;padding:8px 12px;overflow-y:auto}.settings-item{cursor:pointer;border-radius:6px;justify-content:space-between;align-items:center;margin-bottom:4px;padding:12px 16px;transition:background .2s;display:flex}.settings-item:hover{background:var(--bg-hover)}.settings-item span{color:var(--text-primary);font-size:15px}.settings-item button{background:var(--bg-hover);color:var(--text-primary);cursor:pointer;border:none;border-radius:4px;padding:6px 12px;font-size:13px;transition:background .2s}.settings-item button:hover{background:var(--border-color)}.settings-item.logout-item{margin-top:20px;padding:0}.settings-item.logout-item button{color:#ff4757;background:#ff47571a;width:100%;padding:12px;font-weight:500}.settings-item.logout-item button:hover{background:#ff475733}.sidebar-footer{border-top:1px solid var(--border-color);justify-content:center;padding:8px 12px;display:flex}.moments-content{background:var(--bg-primary);flex-direction:column;flex:1;display:flex;overflow-y:auto}.moments-header{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);padding:16px}.moments-header h2{color:var(--text-primary);font-size:18px;font-weight:600}.moments-list{flex:1;padding:16px;overflow-y:auto}.moment-item{background:var(--bg-secondary);box-shadow:0 1px 2px var(--shadow-color);border-radius:8px;margin-bottom:16px;padding:16px}.moment-header{align-items:center;gap:12px;margin-bottom:12px;display:flex}.moment-header-with-action{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:8px}.moment-header-main{align-items:center;gap:12px;min-width:0;display:flex}.moment-add-friend-btn{border:1px solid var(--wechat-green);color:var(--wechat-green);cursor:pointer;background:0 0;border-radius:6px;flex-shrink:0;padding:6px 12px;font-size:13px;transition:background .15s}.moment-add-friend-btn:hover:not(:disabled){background:#07c1601a}.moment-add-friend-btn:disabled{opacity:.55;cursor:default;border-color:var(--border-color);color:var(--text-secondary)}.moment-comments-block{background:var(--bg-secondary);border:1px solid var(--border-color);border-radius:8px;margin-top:12px;padding:12px}.moment-comments-list{max-height:220px;margin-bottom:10px;padding-right:4px;overflow-y:auto}.moment-comments-empty{color:var(--text-secondary);margin:0;font-size:13px}.moment-comment-line{color:var(--text-primary);background:var(--bg-primary);border-radius:6px;margin-bottom:8px;padding:6px 8px;font-size:14px;line-height:1.55}.moment-comment-text{word-break:break-word}.moment-comment-author{color:var(--text-primary);font-weight:600}.moment-comment-reply{color:var(--text-secondary);font-size:13px}.moment-comment-form{align-items:center;gap:8px;min-height:44px;display:flex}.moment-comment-form input{border:1px solid var(--border-color);background:var(--bg-primary);min-width:0;color:var(--text-primary);border-radius:8px;flex:1;padding:10px 12px;font-size:14px}.moment-comment-send{background:var(--wechat-green);color:#fff;cursor:pointer;border:none;border-radius:6px;padding:8px 14px;font-size:14px}.moment-comment-send:hover{background:var(--wechat-green-hover)}.moment-header h4{color:var(--text-primary);margin:0;font-size:15px;font-weight:600}.moment-time{color:var(--text-secondary);margin-top:2px;font-size:12px;display:block}.moment-content p{color:var(--text-primary);margin:0 0 12px;font-size:15px;line-height:1.6}.moment-images{grid-template-columns:repeat(3,1fr);gap:4px;margin-bottom:12px;display:grid}.moment-images img{aspect-ratio:1;object-fit:cover;border-radius:4px;width:100%}.moment-actions{border-top:1px solid var(--border-color);align-items:center;gap:16px;padding-top:12px;display:flex}.like-btn{background:var(--bg-secondary);border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;border-radius:20px;align-items:center;gap:6px;padding:6px 12px;font-size:14px;transition:background .15s,border-color .15s,color .15s;display:inline-flex}.like-btn.not-liked:hover{background:var(--bg-hover)}.like-btn.liked{color:#ff3b30;background:#ff3b301f;border-color:#ff3b3059}.like-btn .like-icon{font-size:16px;line-height:1}.like-btn .like-label{font-weight:500}.like-btn .like-count{opacity:.85;font-size:13px}.moment-comment-count{color:var(--text-secondary);-webkit-user-select:none;user-select:none;font-size:14px}.empty-moments{color:var(--text-secondary);flex-direction:column;flex:1;justify-content:center;align-items:center;display:flex}.empty-moments h3{margin-bottom:8px;font-size:18px;font-weight:500}.empty-moments p{font-size:14px}.create-moment-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:4px;font-size:20px;transition:background .2s}.create-moment-btn:hover{background:var(--bg-hover)}.settings-content{background:var(--bg-primary);flex-direction:column;flex:1;min-height:0;display:flex}.settings-header{background:var(--bg-secondary);border-bottom:1px solid var(--border-color);flex-shrink:0;padding:16px}.settings-header h2{color:var(--text-primary);font-size:18px;font-weight:600}.settings-main{flex-direction:column;flex:1;min-height:0;display:flex;overflow:hidden}.settings-category-nav{background:var(--bg-secondary);border-right:1px solid var(--border-color);flex-direction:column;flex-shrink:0;gap:4px;width:200px;min-width:200px;padding:12px 0;display:flex}.settings-category-btn{text-align:left;width:100%;color:var(--text-primary);cursor:pointer;background:0 0;border:none;padding:12px 20px;font-size:15px;transition:background .15s}.settings-category-btn:hover{background:var(--bg-hover)}.settings-category-btn.active{background:var(--bg-hover);color:var(--wechat-green);border-right:3px solid var(--wechat-green);padding-right:17px;font-weight:600}.settings-detail{flex:1;min-width:0;padding:20px 24px;overflow-y:auto}.settings-section-flat{max-width:520px}.setting-item-stack{flex-direction:column;align-items:flex-start;gap:8px}.settings-api-base-row{width:100%}.settings-api-base-input{box-sizing:border-box;border:1px solid var(--border-color);background:var(--bg-primary);width:100%;color:var(--text-primary);border-radius:8px;outline:none;padding:10px 12px;font-size:14px;transition:border-color .2s}.settings-api-base-input:focus{border-color:var(--wechat-green)}.settings-api-base-hint{color:var(--text-secondary);margin:0;font-size:12px;line-height:1.45}.settings-api-save-btn{background:var(--wechat-green);color:#fff;cursor:pointer;border:none;border-radius:6px;margin-top:4px;padding:8px 16px;font-size:14px;font-weight:500;transition:background .2s}.settings-api-save-btn:hover{background:var(--wechat-green-hover)}.setting-item-stack 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0;display:block}.setting-signature-display.clickable:hover{color:var(--text-primary)}.settings-footer{background:var(--bg-secondary);border-top:1px solid var(--border-color);flex-shrink:0;padding:12px 24px 20px}.settings-footer .logout-btn{width:100%;max-width:520px}.settings-panel{flex:1;padding:16px;overflow-y:auto}.user-signature-readonly{color:var(--text-secondary);-webkit-line-clamp:2;line-clamp:2;word-break:break-word;-webkit-box-orient:vertical;margin:4px 0 0;font-size:12px;line-height:1.4;display:-webkit-box;overflow:hidden}.settings-sidebar-hint{flex-direction:column;flex:1;min-height:0;display:flex}.settings-sidebar-hint-text{color:var(--text-secondary);padding:16px 14px;font-size:13px;line-height:1.5}.settings-section{background:var(--bg-secondary);box-shadow:0 1px 2px var(--shadow-color);border-radius:8px;margin-bottom:16px;padding:16px}.settings-section h3{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin:0 0 12px;font-size:14px;font-weight:600}.setting-item{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:12px 0;display:flex}.setting-item:last-child{border-bottom:none}.setting-item span:first-child{color:var(--text-primary);font-size:15px}.setting-item span:last-child{color:var(--text-secondary);font-size:14px}.setting-item button{background:var(--bg-hover);color:var(--text-primary);cursor:pointer;border:none;border-radius:6px;padding:8px 16px;font-size:14px;transition:background .2s}.setting-item button:hover{background:var(--border-color)}.avatar-upload.small{align-items:center;gap:8px;display:flex}.avatar-upload.small .user-avatar{width:36px;height:36px;font-size:14px}.avatar-upload.small span{color:var(--wechat-green);cursor:pointer;font-size:14px}.avatar-upload.small span:hover{text-decoration:underline}.settings-section.logout-section{box-shadow:none;background:0 0;padding:0}.settings-section.logout-section button{color:#ff4757;cursor:pointer;background:#ff47571a;border:none;border-radius:8px;width:100%;padding:14px;font-size:16px;font-weight:500;transition:background .2s}.settings-section.logout-section button:hover{background:#ff475733}.moments-modal{max-width:500px}.moments-modal textarea{border:1px solid var(--border-color);background:var(--bg-secondary);width:100%;color:var(--text-primary);resize:vertical;border-radius:6px;outline:none;min-height:120px;margin-bottom:16px;padding:12px 14px;font-family:inherit;font-size:15px}.moments-modal textarea:focus{border-color:var(--wechat-green)}.moments-modal input[type=file]{margin-bottom:16px}.moment-images-preview{grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:16px;display:grid}.image-preview-item{aspect-ratio:1;position:relative}.image-preview-item img{object-fit:cover;border-radius:6px;width:100%;height:100%}.image-preview-item button{color:#fff;cursor:pointer;background:#00000080;border:none;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;font-size:14px;display:flex;position:absolute;top:4px;right:4px}.error-message{z-index:1000;animation:.3s ease-out slideIn;position:fixed;top:20px;right:20px}.error-content{background-color:#fff1f0;border:1px solid #ffccc7;border-radius:4px;align-items:center;padding:12px 16px;display:flex;box-shadow:0 2px 8px #00000026}.error-icon{margin-right:8px;font-size:16px}.error-text{color:#cf1322;flex:1;font-size:14px}.error-close{cursor:pointer;color:#999;background:0 0;border:none;justify-content:center;align-items:center;width:20px;height:20px;margin-left:8px;padding:0;font-size:16px;display:flex}.error-close:hover{color:#666}.loading{flex-direction:column;justify-content:center;align-items:center;padding:20px;display:flex}.loading-spinner{border:3px solid #f3f3f3;border-top-color:#1890ff;border-radius:50%;width:32px;height:32px;margin-bottom:10px;animation:1s linear infinite spin}.loading-text{color:#666;font-size:14px}@keyframes slideIn{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.progress-container{background:var(--bg-secondary);border-top:1px solid var(--border-color);border-bottom:1px solid var(--border-color);padding:10px 16px}.progress-bar{background:var(--bg-hover);border-radius:3px;width:100%;height:6px;margin-bottom:8px;overflow:hidden}.progress-fill{background:var(--wechat-green);border-radius:3px;height:100%;transition:width .3s}.progress-text{color:var(--text-secondary);text-align:center;font-size:13px}.message-content.recalled{color:var(--text-secondary);background-color:#80808033;font-size:13px;font-style:italic}.message-info .status{color:var(--text-muted);background:#0000000d;border-radius:10px;margin-left:5px;padding:2px 6px;font-size:11px}.message-info .status.read{color:var(--wechat-green)}.message-info .recall-btn{color:#fff;cursor:pointer;background:#f003;border:none;border-radius:4px;margin-left:8px;padding:3px 8px;font-size:11px;transition:background .2s}.message-info .recall-btn:hover{background:#f006}@media (width<=768px){.chat-container{flex-direction:column}.sidebar{border-right:none;border-bottom:1px solid var(--border-color);width:100%;height:200px}.main-content{flex:1}.message{max-width:80%}.message-content.image img{max-width:200px;max-height:200px}.chat-header,.message-input-container{padding:8px 12px}.messages-container{padding:12px}.auth-box{max-width:90%;padding:30px}.wechat-menu{padding:4px 8px}.menu-item{padding:10px 12px}.settings-section,.moment-item{padding:12px}.moments-modal{max-width:90%}}@media (width<=480px){.sidebar{height:180px}.message{max-width:85%}.message-content.image img{max-width:150px;max-height:150px}.chat-user-info h3,.user-name{font-size:14px}.last-message{font-size:12px}.message-content{font-size:14px}.auth-box{padding:20px}.auth-box h1{font-size:24px}.settings-item{padding:10px 0}.moment-content p{font-size:14px}}.info-toast{z-index:10050;color:#fff;pointer-events:none;text-align:center;background:#07c160f2;border-radius:8px;max-width:min(90vw,360px);padding:10px 20px;font-size:14px;position:fixed;top:20px;left:50%;transform:translate(-50%);box-shadow:0 4px 16px #00000026}.moment-header-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:8px;display:flex}.moment-delete-btn{border:1px solid var(--border-color);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:6px;padding:6px 12px;font-size:13px;transition:background .15s,color .15s}.moment-delete-btn:hover{color:#ff3b30;background:#ff3b3014;border-color:#ff3b3059}.moments-upload-row{margin:12px 0}.moment-image-input-hidden{opacity:0;pointer-events:none;width:0;height:0;position:absolute}.moment-image-pick-btn{border:1px dashed var(--wechat-green);color:var(--wechat-green);cursor:pointer;background:#07c1600f;border-radius:8px;justify-content:center;align-items:center;padding:10px 16px;font-size:14px;font-weight:500;transition:background .15s,border-color .15s;display:inline-flex}.moment-image-pick-btn:hover{background:#07c1601f;border-style:solid}.group-invite-hint{color:var(--text-secondary);margin:0 0 10px;font-size:13px}.group-invite-list{flex-wrap:wrap;gap:8px;margin-bottom:8px;display:flex}.group-invite-btn{border:1px solid var(--wechat-green);color:var(--wechat-green);cursor:pointer;background:0 0;border-radius:20px;padding:6px 12px;font-size:13px;transition:background .15s}.group-invite-btn:hover{background:#07c1601a}.group-invite-empty{color:var(--text-secondary);margin:0;font-size:13px}