:root{--primary-color: #2b59ff;--bg-main: #ffffff;--bg-sidebar: #f8f9fa;--bg-msg-user: #f4f4f4;--bg-msg-assistant: transparent;--text-main: #1a1a1a;--text-secondary: #666666;--border-color: #e5e5e5;--input-bg: #ffffff;--shadow: 0 2px 12px rgba(0,0,0,.08)}[data-theme=dark]{--bg-main: #171717;--bg-sidebar: #202020;--bg-msg-user: #2f2f2f;--text-main: #ececec;--text-secondary: #b4b4b4;--border-color: #333333;--input-bg: #212121;--shadow: 0 2px 12px rgba(0,0,0,.3)}*{margin:0;padding:0;box-sizing:border-box;transition:background-color .2s,color .2s}body{font-family:-apple-system,system-ui,sans-serif;background-color:var(--bg-main);color:var(--text-main);overflow:hidden}.app-container{display:flex;height:100vh;height:100dvh}.sidebar{width:260px;background-color:var(--bg-sidebar);border-right:1px solid var(--border-color);display:flex;flex-direction:column;padding:12px;z-index:100}.new-chat-btn{display:flex;align-items:center;gap:8px;padding:10px;background:var(--input-bg);border:1px solid var(--border-color);border-radius:8px;color:var(--text-main);cursor:pointer;margin-bottom:20px;font-weight:500}.history-list{flex:1;overflow-y:auto}.history-item{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;margin-bottom:4px;border-radius:8px;cursor:pointer;font-size:14px;color:var(--text-secondary);transition:all .2s ease;position:relative}.history-item-title{flex:1;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-right:8px}.delete-btn{opacity:0;background:transparent;border:none;color:var(--text-secondary);padding:6px;border-radius:6px;display:flex;align-items:center;justify-content:center;transition:all .2s cubic-bezier(.4,0,.2,1)}.history-item:hover{background:var(--bg-msg-user);color:var(--text-main);padding-left:14px}.history-item:hover .delete-btn{opacity:.6}.delete-btn:hover{background:#ff00001a;color:#ff4d4f!important;opacity:1!important}.history-item.active{background:var(--bg-msg-user);color:var(--text-main);font-weight:500}.history-item.active .delete-btn{opacity:.4}.main-wrap{flex:1;display:flex;flex-direction:column;min-width:0;background-color:var(--bg-main)}.main-content{flex:1;display:flex;flex-direction:column;position:relative;background-color:var(--bg-main);overflow:hidden}.top-nav{height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 16px;border-bottom:1px solid var(--border-color)}.messages-container{flex:1;overflow-y:auto;padding:20px 0}.message-wrapper{width:100%;max-width:800px;margin:0 auto;padding:16px 24px}.searching-wrapper{display:flex;justify-content:flex-start;width:100%;max-width:800px;margin:0 auto;padding:8px 24px}.searching-box{background:#8080800f;border-radius:8px;padding:10px 14px;display:flex;align-items:center;gap:8px;max-width:100%;border-left:3px solid rgba(128,128,128,.3);animation:fadeIn .3s ease}[data-theme=dark] .searching-box{background:#8080801a;border-left-color:#80808066}.searching-icon{font-size:14px;opacity:.7;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.5}50%{opacity:1}}.searching-text{font-size:13px;color:#999;line-height:1.5;font-style:italic}[data-theme=dark] .searching-text{color:#888}.thinking-wrapper{display:flex;justify-content:flex-start}.thinking-box{background:var(--bg-msg-user);border-radius:12px;padding:12px 16px;margin-bottom:16px;display:flex;align-items:center;gap:10px;border:1px solid var(--border-color);max-width:85%;box-shadow:var(--shadow)}.thinking-dot{width:8px;height:8px;background:var(--primary-color);border-radius:50%;animation:thinking-bounce 1.4s ease-in-out infinite both}.thinking-dot:nth-child(1){animation-delay:0s}.thinking-dot:nth-child(2){animation-delay:.2s}.thinking-dot:nth-child(3){animation-delay:.4s}@keyframes thinking-bounce{0%,80%,to{transform:scale(.6);opacity:.5}40%{transform:scale(1);opacity:1}}.thinking-text{font-size:14px;color:var(--text-secondary)}.nav-title{font-size:16px;font-weight:600;flex:1;text-align:center}.message-wrapper.message-user{display:flex;justify-content:flex-end}.message-wrapper.message-assistant{display:block}.search-container{margin:12px 0;border-radius:8px;overflow:hidden;border:1px solid var(--border-color);background:#80808005}.search-header{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;cursor:pointer;background:#8080800d;transition:background .2s}.search-header:hover{background:#80808014}.search-title{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);font-weight:500}.search-status-icon{display:flex;align-items:center;justify-content:center}.search-status-icon.active{animation:rotate 2s linear infinite}@keyframes rotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.search-content-body{padding:14px 18px;font-size:14px;color:#777;line-height:1.6;border-top:1px solid var(--border-color);animation:slideDown .3s ease-out}[data-theme=dark] .search-content-body{color:#999}.collapse-arrow{transition:transform .3s ease;color:var(--text-secondary);opacity:.6}.collapse-arrow.collapsed{transform:rotate(-90deg)}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.message-content-wrapper{margin-top:8px}.message{width:100%}.message.user .content,.message.user .message-content{background-color:var(--bg-msg-user);color:var(--text-main);padding:10px 16px;border-radius:18px;display:inline-block;max-width:85%;margin-left:auto}.message.assistant .content,.message.assistant .message-content{font-size:16px;line-height:1.7;color:var(--text-main)}.sources{margin-top:8px;font-size:12px;color:var(--text-secondary)}.website-link{margin-top:6px}.website-link a{color:var(--primary-color)}.welcome{text-align:center;padding:24px 16px;color:var(--text-secondary)}.welcome p{margin-bottom:8px}.message.assistant .message-content h1,.message.assistant .message-content h2,.message.assistant .message-content h3{margin:12px 0 6px;font-weight:600;color:var(--text-main)}.message.assistant .message-content p{margin-bottom:8px}.message.assistant .message-content hr{margin:16px 0;border:none;border-top:1px solid var(--border-color);opacity:.5}.message.assistant .message-content code{background:var(--bg-msg-user);padding:2px 6px;border-radius:4px;font-size:.9em}.message.assistant .message-content pre{background:var(--bg-msg-user);padding:12px;border-radius:8px;overflow-x:auto;margin:8px 0}.footer{padding:8px 16px;font-size:11px;color:var(--text-secondary);text-align:center;border-top:1px solid var(--border-color);background:var(--bg-sidebar)}.input-area{width:100%;max-width:800px;margin:0 auto;padding:0 20px 24px}.input-wrapper{background:var(--input-bg);border:1px solid var(--border-color);border-radius:24px;padding:8px 16px;display:flex;align-items:flex-end;box-shadow:var(--shadow)}.chat-input{flex:1;border:none;background:transparent;color:var(--text-main);padding:8px 0;font-size:16px;outline:none;resize:none;max-height:200px}.chat-input::placeholder{color:var(--text-secondary)}.send-btn{width:34px;height:34px;border-radius:50%;background:var(--primary-color);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;margin-bottom:3px}.send-btn:disabled{opacity:.5;cursor:not-allowed}.nav-actions{display:flex;align-items:center;gap:12px}.action-icon-btn{background:none;border:none;color:var(--text-main);cursor:pointer;display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;transition:background-color .2s}.action-icon-btn:hover{background-color:var(--bg-msg-user)}.theme-toggle{background:none;border:none;color:var(--text-main);cursor:pointer;display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;transition:background-color .2s}.theme-toggle:hover{background-color:var(--bg-msg-user)}.theme-icon-container{display:flex;align-items:center;justify-content:center;transition:transform .5s cubic-bezier(.4,0,.2,1)}.theme-icon-container.light{color:#f39c12}.theme-icon-container.dark{color:#f1c40f}.theme-toggle:active .theme-icon-container{transform:scale(.8) rotate(45deg)}.menu-toggle{display:none}@media (max-width: 768px){.sidebar{position:fixed;left:-260px;top:0;height:100%;height:100dvh;z-index:1000;transition:left .3s ease;box-shadow:2px 0 8px #0000001a}.sidebar.open{left:0}.menu-toggle{display:block;background:none;border:none;color:var(--text-main);font-size:24px;padding:8px;cursor:pointer}.message-wrapper{padding:12px 28px}.input-area{padding:0 16px 16px}.thinking-box{max-width:90%;font-size:14px;padding:10px 14px}.searching-wrapper{padding:8px 28px}.searching-box{padding:8px 12px;max-width:95%}.searching-text{font-size:12px}.nav-title{font-size:14px}.sidebar-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0000004d;z-index:999;animation:fadeIn .2s ease}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}#root{width:100%;height:100vh}