.theme-selector[data-v-3a079987]{position:fixed;top:60px;right:88px;z-index:1001;background:var(--bg-white);border-radius:var(--radius-sm);box-shadow:0 4px 16px #0000001a;max-height:0;overflow:hidden;transition:max-height .3s ease-out;border:1px solid var(--border-color);width:calc(100% - 32px);max-width:340px}.theme-selector.open[data-v-3a079987]{max-height:550px;overflow-y:auto}.theme-selector-inner[data-v-3a079987]{padding:16px}.theme-section-title[data-v-3a079987]{font-size:13px;color:var(--text-secondary);margin-bottom:10px;font-weight:500}.theme-grid[data-v-3a079987]{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}.theme-card[data-v-3a079987]{border:2px solid var(--border-color);border-radius:var(--radius-sm);padding:10px 8px;cursor:pointer;text-align:center;transition:all .2s;background:var(--bg-white)}.theme-card[data-v-3a079987]:hover{border-color:var(--primary-color)}.theme-card.active[data-v-3a079987]{border-color:var(--primary-color);box-shadow:0 0 0 2px #1677ff26}.theme-swatch[data-v-3a079987]{width:28px;height:28px;border-radius:50%;margin:0 auto 6px;border:1px solid var(--border-light)}.theme-name[data-v-3a079987]{font-size:12px;color:var(--text-main);white-space:nowrap}.theme-divider[data-v-3a079987]{height:1px;background:var(--border-color);margin:14px 0}.theme-custom-row[data-v-3a079987]{display:flex;align-items:center;gap:8px}.code-label[data-v-3a079987]{font-size:13px;color:var(--text-secondary);width:32px;flex-shrink:0}.theme-color-picker[data-v-3a079987]{width:36px;height:36px;border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;padding:2px;background:var(--bg-white)}.theme-color-text[data-v-3a079987]{flex:1;padding:6px 10px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:13px;outline:none;font-family:JetBrains Mono,monospace;background:var(--bg-white);color:var(--text-main)}.theme-color-text[data-v-3a079987]:focus{border-color:var(--primary-color)}.theme-apply-btn[data-v-3a079987]{padding:6px 14px;background:var(--primary-color);color:#fff;border:none;border-radius:var(--radius-sm);font-size:13px;cursor:pointer;transition:background .2s}.theme-apply-btn[data-v-3a079987]:hover{background:var(--primary-hover)}.edit-textarea[data-v-bef341be]{width:100%;min-height:80px;padding:10px 16px;border:2px solid var(--primary-color);border-radius:var(--radius-main);font-size:15px;outline:none;resize:vertical;background:var(--bg-white);color:var(--text-main);font-family:inherit;line-height:1.6;-webkit-user-select:text;user-select:text}.edit-confirm-btn[data-v-bef341be],.edit-cancel-btn[data-v-bef341be]{padding:4px 16px;border-radius:var(--radius-sm);font-size:13px;cursor:pointer;border:none;transition:all .2s}.edit-confirm-btn[data-v-bef341be]{background:var(--primary-color);color:#fff}.edit-confirm-btn[data-v-bef341be]:hover{background:var(--primary-hover)}.edit-cancel-btn[data-v-bef341be]{background:var(--bg-gray);color:var(--text-secondary);border:1px solid var(--border-color)}.edit-cancel-btn[data-v-bef341be]:hover{background:var(--border-color)}:root{--primary-color:#1677ff;--primary-rgb:22,119,255;--primary-hover:#0f62d9;--primary-light:#e8f3ff;--primary-alt:#1890ff;--pinned-bg:#e6f7ff;--temp-pinned-bg:#f0f5ff;--text-main:#333;--text-secondary:#666;--text-light:#999;--text-muted:#888;--text-danger:#e53e3e;--danger-hover:#c93737;--bg-white:#fff;--bg-gray:#f5f7fa;--bg-gray-light:#f0f2f5;--bg-dark:#1e1e1e;--border-color:#e5e7eb;--border-light:#eee;--code-bg:#1e1e1e;--code-text:#d4d4d4;--input-bg:#f5f7fa;--loading-bg:#fff;--msg-ai-bg:#fff;--radius-main:12px;--radius-sm:6px;--radius-round:20px;--shadow-sm:0 2px 8px rgba(0,0,0,.08);--shadow-md:0 4px 16px rgba(0,0,0,.1)}*{margin:0;padding:0;box-sizing:border-box;font-family:Microsoft YaHei,sans-serif;-webkit-user-select:none;user-select:none}body{background:var(--bg-gray);overflow:hidden;color:var(--text-main);height:100vh}#chat-container{-webkit-user-select:text;user-select:text}input,textarea,select{-webkit-user-select:auto;user-select:auto}.message-content ::selection{background:var(--primary-color);color:#fff}.message-content{-webkit-user-select:text;user-select:text;overflow-wrap:break-word;word-wrap:break-word}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-light)}.sidebar-toggle{background:var(--primary-color);color:#fff;border:none;border-radius:var(--radius-sm);width:32px;height:32px;cursor:pointer;z-index:10001;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px rgba(var(--primary-rgb),.3);transition:background .2s}.sidebar-toggle:hover{background:var(--primary-hover)}#sidebar-toggle-outer{position:absolute;top:50%;left:16px;transform:translateY(-50%)}#sidebar-toggle-inner{position:static;margin-right:8px;box-shadow:0 1px rgba(var(--primary-rgb),.3)}.sidebar{position:fixed;top:0;left:0;width:250px;height:100vh;background:var(--bg-white);border-right:1px solid var(--border-color);display:flex;flex-direction:column;transition:transform .3s ease;z-index:9998;box-shadow:var(--shadow-sm);padding-top:60px}.sidebar.collapsed{transform:translate(-100%)}.sidebar-header{padding:16px;background:var(--primary-color);display:flex;justify-content:flex-start;align-items:center;position:fixed;top:0;left:0;width:250px;height:60px;z-index:9999}.sidebar-title{font-size:16px;font-weight:500;color:#fff;margin-left:12px}.sidebar-controls{display:flex;gap:8px;position:absolute;right:16px}.sidebar-btn{width:32px;height:32px;border-radius:var(--radius-sm);border:none;background:#fff3;color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}.sidebar-btn:hover{background:#ffffff4d}.conversations-list{flex:1;overflow-y:auto;padding:8px}.conversation-item{padding:12px 16px;border-radius:var(--radius-sm);margin-bottom:4px;cursor:pointer;transition:all .2s;position:relative;background:var(--bg-white);border:1px solid transparent;display:flex;justify-content:center;align-items:center;width:100%}.conversation-item:hover{background:var(--primary-light);border-color:var(--primary-light)}.conversation-item.active{background:var(--primary-light);border-color:var(--primary-color);font-weight:500}.conversation-item.pinned{background:var(--pinned-bg)}.conversation-item.temp-pinned{background:var(--temp-pinned-bg)}.conversation-info{flex:1;overflow:hidden;cursor:pointer}.conversation-title{font-size:14px;color:var(--text-main);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;border:none;background:transparent;outline:none;width:100%;pointer-events:none;opacity:.9}.rename-input{width:100%;padding:2px 4px;font-size:14px;border:1px solid var(--primary-color);border-radius:var(--radius-sm);outline:none;background:var(--bg-white);color:var(--text-main);font-family:inherit}.rename-row{display:flex;align-items:center;gap:4px}.rename-confirm-btn{width:24px;height:24px;border-radius:50%;border:none;background:var(--primary-color);color:#fff;font-size:14px;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;line-height:1;padding:0}.rename-confirm-btn:hover{background:var(--primary-hover)}.conversation-title.editable{pointer-events:auto;opacity:1;border-bottom:1px solid var(--primary-color)}.conversation-time{font-size:12px;color:var(--text-light);margin-top:4px}.conversation-more{width:28px;height:28px;border-radius:50%;background:transparent;border:none;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s;flex-shrink:0}.conversation-more:hover{background:var(--primary-light)}.conversation-actions{position:absolute;top:100%;right:0;background:var(--bg-white);border-radius:var(--radius-sm);box-shadow:0 2px 8px #00000026;border:1px solid var(--border-color);display:none;flex-direction:column;z-index:100;width:120px}.conversation-actions.show{display:flex}.conversation-action-btn{padding:8px 12px;border:none;background:transparent;color:var(--text-main);cursor:pointer;text-align:left;font-size:13px}.conversation-action-btn:hover{background:var(--primary-light)}.conversation-action-btn.pin-btn{color:var(--primary-color)}.conversation-action-btn.rename-btn{color:var(--primary-alt)}.conversation-action-btn.delete-btn{color:var(--text-danger)}.conversation-action-btn.confirm-delete{background:var(--text-danger);color:#fff}.main-content{flex:1;display:flex;flex-direction:column;overflow:hidden;border-radius:var(--radius-main);height:100vh;width:100%;z-index:100}.chat-header{background:var(--primary-color);color:#fff;padding:12px 16px;text-align:center;font-weight:500;box-shadow:0 2px 8px rgba(var(--primary-rgb),.2);position:relative;border-radius:var(--radius-main) var(--radius-main) 0 0;height:60px;display:flex;align-items:center;justify-content:center}.current-config{padding:8px 16px;background:var(--primary-light);color:var(--primary-color);font-size:13px;text-align:center;border-bottom:1px solid var(--border-color)}.config-selector-toggle,.theme-selector-toggle{position:absolute;top:50%;right:16px;transform:translateY(-50%);background:#fff3;color:#fff;border:none;border-radius:6px;padding:3px 6px;font-size:13px;cursor:pointer;transition:background .2s;z-index:1002;width:auto}.config-selector-toggle:hover,.theme-selector-toggle:hover{background:#ffffff4d}.theme-selector-toggle{right:88px}.config-selector{position:fixed;top:60px;right:16px;z-index:1001;background:var(--bg-white);border-radius:var(--radius-sm);box-shadow:0 4px 16px #0000001a;max-height:0;overflow:hidden;transition:max-height .3s ease-out;border:1px solid var(--border-color);width:calc(100% - 32px);max-width:500px}.config-selector.open{max-height:600px;overflow-y:auto}.config-selector-inner{padding:16px}.config-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:16px;flex-direction:column}.config-item-row{display:flex;align-items:center;gap:12px;width:100%}.config-label{font-size:14px;color:var(--text-main);width:90px;text-align:right;flex-shrink:0}.config-input{flex:1;padding:8px 12px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:14px;outline:none;transition:border .2s;background:var(--bg-white)}.config-input:focus{border-color:var(--primary-color);box-shadow:0 0 0 2px rgba(var(--primary-rgb),.1)}.config-btn{padding:8px 16px;background:var(--primary-color);color:#fff;border:none;border-radius:var(--radius-sm);font-size:14px;cursor:pointer;transition:background .2s;flex-shrink:0;margin-left:8px}.config-btn:hover{background:var(--primary-hover)}.config-btn.danger{background:var(--text-danger)}.config-btn.danger:hover,.config-btn.confirm-delete{background:var(--danger-hover)}.config-btn:disabled{opacity:.5;cursor:not-allowed}.stream-speed-slider,.context-length-slider{flex:1;height:8px;-webkit-appearance:none;background:var(--bg-gray);border-radius:4px;outline:none}.stream-speed-slider::-webkit-slider-thumb,.context-length-slider::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:var(--primary-color);cursor:pointer;box-shadow:0 0 4px rgba(var(--primary-rgb),.5)}.stream-speed-text,.context-length-text,.switch-text{font-size:12px;color:var(--text-secondary);width:90px;text-align:left}.switch-control{width:40px;height:20px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--bg-gray);border-radius:10px;position:relative;cursor:pointer;transition:background .2s}.switch-control:checked{background:var(--primary-color)}.switch-control:after{content:"";position:absolute;width:16px;height:16px;border-radius:50%;background:#fff;top:2px;left:2px;transition:left .2s}.switch-control:checked:after{left:22px}#host-error-tip{width:calc(100% - 90px);margin-left:90px;margin-top:1px;padding-left:12px;font-size:12px;color:#e53e3e;line-height:1.2;display:none}#host-error-tip.show{display:block}.offline-banner{text-align:center;font-size:13px;color:#fff;background:#e53e3e;padding:4px 0;line-height:1.5;width:100%}.chat-temp-tip{text-align:center;font-size:14px;color:#e53e3e;padding:8px 0;margin:10px auto;line-height:1.5;display:none;width:100%;max-width:600px}.chat-temp-tip.show{display:block}.storage-collapse{margin-top:20px;border-top:1px solid var(--border-color);padding-top:16px}.storage-collapse-header{font-size:14px;color:var(--primary-color);font-weight:500;cursor:pointer;display:flex;align-items:center;gap:8px}.storage-collapse-header:before{content:"+";font-size:16px;line-height:1;transition:transform .2s}.storage-collapse-header.expanded:before{transform:rotate(45deg)}.storage-collapse-body{margin-top:12px;display:none}.storage-collapse-body.expanded{display:block}.storage-btn-group{display:flex;gap:8px;margin-left:90px}.chat-container{height:100%;padding:16px 16px 150px;overflow-y:auto;width:100%;box-sizing:border-box;line-height:1.6}.message{margin-bottom:20px;max-width:min(70%,680px);display:flex;position:relative}.message.system-message,.message.ai-error{max-width:100%}.message.ai-error{justify-content:flex-start}.message-avatar{width:40px;height:40px;border-radius:50%;margin-right:12px;margin-top:4px;flex-shrink:0;background:var(--primary-light);display:flex;align-items:center;justify-content:center;color:var(--primary-color);font-weight:700}.user-message .message-avatar{background:var(--primary-color);color:#fff;margin:4px 0 0 12px}.user-message{flex-direction:row-reverse;margin-left:auto}.message-content{position:relative;padding:6px 16px;border-radius:var(--radius-main);line-height:1.6;word-break:break-word;font-size:15px;width:auto;min-width:60px}.system-message .message-content{background:var(--primary-light);color:var(--primary-color);border:1px solid var(--border-color)}.user-message .message-content{background:var(--primary-color);color:#fff;border-top-right-radius:4px}.ai-message .message-content{background:var(--msg-ai-bg);color:var(--text-main);border-top-left-radius:4px;border:1px solid var(--border-color);box-shadow:0 2px 4px #0000000d}.msg-controls{display:flex;gap:6px;margin-top:6px;font-size:12px;flex-wrap:nowrap;align-items:center}.ai-message .msg-controls{justify-content:flex-start;padding-left:2px;width:100%}.user-message .msg-controls{justify-content:flex-end;padding-right:2px;width:100%}.copy-btn,.edit-btn,.resend-btn,.stream-btn{padding:2px 8px;border:1px solid var(--primary-color);background:transparent;color:var(--primary-color);border-radius:4px;font-size:12px;cursor:pointer;transition:all .2s}.copy-btn:hover,.edit-btn:hover,.resend-btn:hover,.stream-btn:hover{background:var(--primary-color);color:#fff}.think-duration{color:var(--text-secondary);margin:0 6px}.message-time{color:var(--text-light);margin:0 4px}.msg-more-wrapper{position:relative;display:inline-block}.msg-more-btn{width:24px;height:24px;border:none;background:transparent;color:var(--text-secondary);cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background .2s;flex-shrink:0}.msg-more-btn:hover{background:var(--bg-gray)}.msg-more-menu{position:absolute;top:100%;left:0;background:var(--bg-white);border-radius:var(--radius-sm);box-shadow:0 2px 8px #0000001a;z-index:999;list-style:none;padding:4px 0;display:none;width:100px;box-sizing:border-box;border:1px solid var(--border-color)}.msg-more-menu.show{display:block}.msg-more-menu li{padding:6px 12px;border:none;background:transparent;color:var(--text-main);cursor:pointer;transition:background .2s}.msg-more-menu li:hover{background:var(--bg-gray)}.msg-more-menu li.delete-item{color:var(--text-danger)}.msg-more-menu li.confirm-delete{background:var(--text-danger);color:#fff}.loading{margin-bottom:20px;max-width:75%;display:flex}.loading-content{background:var(--loading-bg);color:var(--text-main);padding:14px 18px;border-radius:var(--radius-main);border-top-left-radius:4px;display:flex;align-items:center;gap:8px;border:1px solid var(--border-color);box-shadow:0 2px 4px #0000000d}.think-time{font-size:12px;color:var(--text-secondary);margin-left:8px}.loading-dot{width:8px;height:8px;border-radius:50%;background:var(--primary-color);animation:loading 1.4s infinite ease-in-out both}.loading-dot:nth-child(1){animation-delay:-.32s}.loading-dot:nth-child(2){animation-delay:-.16s}@keyframes loading{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}.toast-notification{position:fixed;bottom:80px;left:50%;transform:translate(-50%) translateY(20px);padding:10px 24px;border-radius:20px;font-size:13px;z-index:10000;opacity:0;transition:all .3s ease;pointer-events:none;white-space:nowrap;max-width:90vw;overflow:hidden;text-overflow:ellipsis}.toast-notification.show{opacity:1;transform:translate(-50%) translateY(0)}.toast-notification.toast-info{background:#000000bf;color:#fff}.toast-notification.toast-success{background:#52c41ae6;color:#fff}.toast-notification.toast-warning{background:#faad14e6;color:#fff}.toast-notification.toast-error{background:#f5222de6;color:#fff}.input-container{position:fixed;bottom:0;left:0;right:0;padding:0 16px 16px;background:var(--bg-white);border-top:1px solid var(--border-color);box-shadow:0 -2px 12px #0000000d;border-radius:12px 12px 0 0;width:100%;z-index:998}.input-container.collapsed{bottom:-100%}#input-toggle-btn{width:75px!important;height:22px!important;border:none;border-radius:var(--radius-sm);background:var(--primary-color);color:#fff;font-size:13px!important;cursor:pointer;display:flex;align-items:center;justify-content:center;padding:2px!important;margin:0!important;box-sizing:border-box;z-index:999}#input-toggle-btn.inner-btn{position:absolute;left:0;top:0;border-radius:6px!important}#input-toggle-btn.fixed-btn{position:fixed;left:0!important;bottom:0!important;z-index:1000;box-shadow:0 2px 8px #0003;margin:0!important;padding:2px!important;border-radius:6px!important}.input-wrapper{display:flex;align-items:flex-end;gap:12px;margin-top:35px!important}#message-input{flex:1;padding:14px 18px;border:1px solid var(--border-color);border-radius:var(--radius-main);font-size:15px;outline:none;resize:none;height:56px;max-height:200px;background:var(--input-bg);color:var(--text-main);transition:height .2s ease,border-color .2s,box-shadow .2s}.input-hint{margin-top:6px;font-size:11px;color:var(--text-light);text-align:center;-webkit-user-select:none;user-select:none}.sidebar-search{padding:8px;border-bottom:1px solid var(--border-color)}.sidebar-search-input{width:100%;padding:6px 10px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:13px;outline:none;background:var(--bg-gray);transition:all .2s}.sidebar-search-input:focus{border-color:var(--primary-color);background:var(--bg-white);box-shadow:0 0 0 2px rgba(var(--primary-rgb),.1)}.empty-state{padding:40px 20px;text-align:center;color:var(--text-light)}.empty-state-icon{font-size:48px;margin-bottom:16px;opacity:.4}.empty-state-title{font-size:16px;color:var(--text-secondary);margin-bottom:8px}.empty-state-hint{font-size:13px;line-height:1.8}#message-input:focus{border-color:var(--primary-color);box-shadow:0 0 0 2px rgba(var(--primary-rgb),.1);background:var(--bg-white)}#send-button{width:56px;height:56px;border:none;border-radius:50%;background:var(--primary-color);color:#fff;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}#send-button:hover{background:var(--primary-hover)}#send-button:disabled{background:#e5e7eb;cursor:not-allowed}@media (max-width:1024px){.config-selector{right:8px;width:calc(100% - 16px)}.message{max-width:85%}}@media (max-width:768px){.sidebar{width:250px}.config-selector{width:calc(100% - 32px);max-width:100%}.chat-container{padding:12px 12px 130px}.message{max-width:90%}.message-avatar{width:36px;height:36px}#message-input{height:48px;font-size:14px}#send-button{width:48px;height:48px}#input-toggle-btn{width:70px;height:20px;font-size:12px!important}.storage-btn-group{flex-direction:column;margin-left:0}#host-error-tip{width:100%;margin-left:0;padding-left:0}}.message-content pre,.message-content .code-block{margin:12px 0;padding:0;background:var(--code-bg);border-radius:8px;overflow-x:auto;position:relative;font-size:14px;line-height:1.5}.code-header{display:flex;align-items:center;justify-content:space-between;padding:6px 12px;background:var(--bg-gray-light);border-bottom:1px solid var(--border-color);border-radius:8px 8px 0 0}.code-lang{font-size:12px;color:var(--text-muted);text-transform:lowercase;font-family:Microsoft YaHei,sans-serif}.code-header .copy-code-btn{position:static;display:block;padding:2px 8px;font-size:11px;border:1px solid var(--code-btn-color);background:transparent;color:var(--code-btn-color);border-radius:4px;cursor:pointer;transition:all .2s}.code-header .copy-code-btn:hover{background:var(--code-btn-hover-bg);color:#fff}.message-content pre code{display:block;padding:16px;font-family:JetBrains Mono,Fira Code,Microsoft YaHei,monospace;color:var(--code-text);background:transparent;font-size:inherit;white-space:pre;word-break:normal}.message-content pre[data-collapsed]{max-height:360px;overflow:hidden;position:relative}.message-content pre[data-collapsed]:after{content:"";position:absolute;bottom:0;left:0;right:0;height:60px;background:linear-gradient(transparent,var(--code-bg));pointer-events:none}.expand-code-btn{position:absolute;bottom:8px;left:50%;transform:translate(-50%);padding:4px 16px;font-size:12px;background:var(--code-bg);color:var(--primary-color);border:1px solid var(--primary-color);border-radius:4px;cursor:pointer;z-index:2;transition:all .2s;white-space:nowrap}.expand-code-btn:hover{background:var(--primary-color);color:#fff}.message-content :not(pre)>code{padding:2px 6px;background:var(--bg-gray-light);border-radius:4px;font-size:.9em;color:var(--text-danger);font-family:JetBrains Mono,Fira Code,monospace;word-break:break-word}.message-content table{width:100%;border-collapse:collapse;margin:12px 0;font-size:14px;overflow-x:auto;display:block}.message-content th,.message-content td{border:1px solid var(--border-color);padding:8px 12px;text-align:left}.message-content th{background:var(--bg-gray);font-weight:600}.message-content tr:nth-child(2n){background:var(--bg-gray-light)}.message-content blockquote{border-left:4px solid var(--primary-color);background:var(--bg-gray);padding:8px 16px;margin:12px 0;border-radius:0 6px 6px 0;color:var(--text-secondary)}.message-content blockquote p{margin:4px 0}.message-content hr{border:none;border-top:1px solid #e5e7eb;margin:16px 0}.message-content h1,.message-content h2,.message-content h3,.message-content h4{margin:16px 0 8px;line-height:1.4}.message-content h1{font-size:1.4em;border-bottom:1px solid var(--border-light);padding-bottom:6px}.message-content h2{font-size:1.25em;border-bottom:1px solid var(--border-light);padding-bottom:4px}.message-content h3{font-size:1.1em}.message-content p{margin:4px 0}.message-content ul,.message-content ol{padding-left:24px;margin:8px 0}.message-content li{margin:4px 0}.message-content a{color:var(--primary-color);text-decoration:none}.message-content a:hover{text-decoration:underline}.message-content img{max-width:100%;border-radius:6px;margin:8px 0}#app{width:100%;height:100vh}.app-root{display:flex;width:100%;height:100%;overflow:hidden}.sidebar-empty{padding:20px;text-align:center;color:var(--text-light);font-size:14px}.time-separator{text-align:center;margin:16px 0;position:relative}.time-separator span{background:var(--bg-gray);padding:4px 12px;border-radius:var(--radius-round);font-size:12px;color:var(--text-light)}.message-wrapper{flex:0 1 auto;max-width:100%;min-width:0}.chat-wrapper{position:relative;flex:1;overflow:hidden}.scroll-down-btn{position:fixed;bottom:160px;left:50%;transform:translate(-50%);width:36px;height:36px;border-radius:50%;border:1px solid var(--border-color);background:var(--bg-white);color:var(--text-secondary);font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-sm);z-index:999;transition:all .2s}.scroll-down-btn:hover{background:var(--primary-color);color:#fff;border-color:var(--primary-color);box-shadow:0 2px 8px rgba(var(--primary-rgb),.3)}