*{box-sizing:border-box}html,body{height:100%;margin:0;font-family:-apple-system,BlinkMacSystemFont,Pretendard,Segoe UI,sans-serif;overflow:hidden}.app-layout{background:var(--bg);height:100dvh;display:flex;overflow:hidden}.app-sidebar{border-right:1px solid var(--border);background:var(--bg);background-color:#00000005;flex-direction:column;flex-shrink:0;width:260px;min-width:220px;height:100%;display:flex;position:relative;overflow:hidden}[data-theme=dark] .app-sidebar{background-color:#ffffff05}.sidebar-top-pad{flex-shrink:0;height:56px;position:relative}.sidebar-header{flex-shrink:0;justify-content:space-between;align-items:center;gap:8px;padding:12px 16px;display:flex}.sidebar-brand{letter-spacing:-.02em;color:var(--fg);opacity:1;z-index:10;flex:1;padding:0;font-size:16px;font-weight:800;position:static}.new-chat-btn-icon{border:1.5px solid var(--primary);width:40px;min-width:40px;height:40px;color:var(--primary);cursor:pointer;background:#006fee1a;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;padding:0;font-family:inherit;transition:all .15s;display:flex}.new-chat-btn-icon:hover{border-color:var(--primary);color:var(--primary);background:#006fee26}.new-chat-btn{border:1px solid var(--border);color:var(--fg-muted);cursor:pointer;text-align:left;background:0 0;border-radius:10px;align-items:center;gap:6px;margin:0 10px 10px;padding:9px 14px;font-family:inherit;font-size:13px;font-weight:600;transition:all .15s;display:flex}.new-chat-btn:hover{background:var(--card-bg);border-color:var(--primary);color:var(--primary)}.sidebar-tabs{border-bottom:1px solid var(--border);flex-shrink:0;gap:8px;padding:8px 10px;display:flex}.sidebar-tab{border:1px solid var(--border);cursor:pointer;color:var(--fg-muted);background:#0000000a;border-radius:6px;flex:1;padding:6px 8px;font-family:inherit;font-size:11px;font-weight:600;transition:all .12s}.sidebar-tab.active{border-color:var(--border);color:var(--fg);background:#00000014}.sidebar-tab:hover{border-color:var(--border);background:#0000000f}[data-theme=dark] .sidebar-tab{background:#ffffff0a}[data-theme=dark] .sidebar-tab.active{color:var(--fg);background:#ffffff1a}[data-theme=dark] .sidebar-tab:hover{background:#ffffff12}.sidebar-tab-content{display:none}.sidebar-tab-content.active{display:block}.sidebar-scrollable{flex:1;padding-bottom:16px;overflow-y:auto}.sidebar-section-label{color:var(--fg-muted);text-transform:uppercase;letter-spacing:.06em;justify-content:space-between;align-items:center;padding:10px 16px 4px;font-size:10px;font-weight:700;display:flex}.sidebar-label-btn{color:var(--fg-muted);cursor:pointer;background:0 0;border:none;border-radius:4px;padding:2px 6px;font-family:inherit;font-size:10px;transition:color .12s}.sidebar-label-btn:hover{color:var(--danger)}.sidebar-label-btn.refresh:hover{color:var(--primary)}.sidebar-label-btn:disabled{opacity:.5;cursor:default}.conv-item{color:var(--fg);cursor:pointer;white-space:nowrap;text-overflow:ellipsis;border-radius:8px;margin:1px 8px;padding:7px 14px;font-size:12px;line-height:1.5;transition:background .12s;overflow:hidden}.conv-item:hover{background:var(--card-bg)}.conv-item.active{color:var(--primary);background:#006fee1a;font-weight:600}.conv-item-empty{color:var(--fg-muted);padding:8px 16px;font-size:11px;font-style:italic}.sidebar-divider{background:var(--border);height:1px;margin:10px 12px}.tree-category{margin-bottom:2px}.tree-cat-header{cursor:pointer;color:var(--fg-muted);user-select:none;border-radius:6px;align-items:center;gap:6px;margin:0 6px;padding:6px 14px;font-size:12px;font-weight:700;transition:background .12s;display:flex}.tree-cat-header:hover{background:var(--card-bg)}.tree-cat-header .arrow{font-size:9px;transition:transform .15s;display:inline-block}.tree-cat-header.open .arrow{transform:rotate(90deg)}.tree-files{display:none}.tree-files.open{display:block}.tree-file{cursor:pointer;color:var(--fg);white-space:normal;overflow-wrap:anywhere;word-break:break-word;border-radius:6px;align-items:flex-start;gap:6px;margin:1px 6px;padding:5px 14px 5px 22px;font-size:12px;line-height:1.45;transition:background .12s;display:flex}.tree-file:hover{background:var(--card-bg)}.tree-file.active{color:var(--primary);background:#006fee1a;font-weight:600}.tree-loading{text-align:center;padding:16px}.tree-loading:after{content:"";border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:14px;height:14px;animation:.7s linear infinite spin;display:inline-block}.tree-empty{color:var(--fg-muted);text-align:center;padding:12px 16px;font-size:11px;line-height:1.6}.app-main{flex-direction:column;flex:1;height:100%;display:flex;position:relative;overflow:hidden}.main-view{flex-direction:column;height:100%;display:none;overflow:hidden}.main-view.active{display:flex}.welcome-wrap{background-image:repeating-linear-gradient(0deg,#0000,#0000 39px,#00000008 39px 40px),repeating-linear-gradient(90deg,#0000,#0000 39px,#00000008 39px 40px);background-position:0 0,0 0;background-size:40px 40px;flex-direction:column;flex:1;justify-content:center;align-items:center;padding:60px 40px 40px;display:flex;overflow-y:auto}[data-theme=dark] .welcome-wrap{background-image:repeating-linear-gradient(0deg,#0000,#0000 39px,#ffffff08 39px 40px),repeating-linear-gradient(90deg,#0000,#0000 39px,#ffffff08 39px 40px)}.welcome-icon{margin-bottom:16px;font-size:52px}.welcome-title{color:var(--fg);letter-spacing:-.02em;text-align:center;margin:0 0 8px;font-size:26px;font-weight:800}.welcome-desc{color:var(--fg-muted);text-align:center;max-width:460px;margin:0 0 32px;font-size:14px;line-height:1.7}.welcome-input-box{gap:8px;width:100%;max-width:600px;margin-bottom:20px;display:flex}.welcome-input{border:2px solid var(--border);background:var(--card-bg);color:var(--fg);border-radius:14px;outline:none;flex:1;padding:13px 18px;font-family:inherit;font-size:15px;transition:border-color .15s}.welcome-input:focus{border-color:var(--primary)}.welcome-input::placeholder{color:var(--fg-muted)}.welcome-submit{background:var(--primary);color:#fff;cursor:pointer;white-space:nowrap;border:none;border-radius:14px;padding:13px 24px;font-family:inherit;font-size:14px;font-weight:700;transition:background .15s}.welcome-submit:hover{background:var(--primary-h)}.welcome-chips{flex-wrap:wrap;justify-content:center;gap:8px;max-width:600px;display:flex}.welcome-chip{border:1px solid var(--border);background:var(--card-bg);color:var(--fg-muted);cursor:pointer;border-radius:20px;padding:7px 14px;font-family:inherit;font-size:12px;transition:all .12s}.welcome-chip:hover{border-color:var(--primary);color:var(--primary)}.recent-docs-wrap{width:100%;max-width:600px;margin-top:24px}.recent-docs-label{color:var(--fg-muted);text-transform:uppercase;letter-spacing:.06em;justify-content:space-between;align-items:center;margin-bottom:8px;font-size:11px;font-weight:700;display:flex}.recent-doc-item{border:1px solid var(--border);background:var(--card-bg);cursor:pointer;border-radius:10px;align-items:center;gap:10px;margin-bottom:6px;padding:10px 14px;transition:border-color .15s,background .15s;display:flex}.recent-doc-item:hover{border-color:var(--primary);background:#006fee0a}.recent-doc-icon{flex-shrink:0;font-size:14px}.recent-doc-info{flex:1;min-width:0}.recent-doc-name{color:var(--fg);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:600;overflow:hidden}.recent-doc-meta{color:var(--fg-muted);margin-top:1px;font-size:11px}.chat-filter-bar{border-bottom:1px solid var(--border);flex-wrap:wrap;flex-shrink:0;align-items:center;gap:6px;height:58px;padding:16px 24px;display:flex}.chat-messages{background-image:repeating-linear-gradient(0deg,#0000,#0000 39px,#00000008 39px 40px),repeating-linear-gradient(90deg,#0000,#0000 39px,#00000008 39px 40px);background-position:0 0,0 0;background-size:40px 40px;flex-direction:column;flex:1;gap:16px;min-height:0;padding:20px 32px;display:flex;overflow-y:auto}[data-theme=dark] .chat-messages{background-image:repeating-linear-gradient(0deg,#0000,#0000 39px,#ffffff08 39px 40px),repeating-linear-gradient(90deg,#0000,#0000 39px,#ffffff08 39px 40px)}.chat-turn{flex-direction:column;gap:8px;display:flex}.chat-user{background:var(--primary);color:#fff;border-radius:16px 16px 4px;align-self:flex-end;max-width:75%;padding:10px 15px;font-size:14px;line-height:1.5}.chat-ai{align-self:flex-start;max-width:90%}.chat-ai-card{background:var(--card-bg);border:1px solid var(--border);border-radius:4px 16px 16px;padding:14px 16px}.chat-ai-body{color:var(--fg);font-size:13px;line-height:1.8}.chat-ai-body h1,.chat-ai-body h2,.chat-ai-body h3{margin:.8em 0 .3em;font-size:1.05em;font-weight:700}.chat-ai-body p{margin:.4em 0}.chat-ai-body ul,.chat-ai-body ol{margin:.4em 0;padding-left:1.4em}.chat-ai-body li{margin:.2em 0}.chat-ai-body strong{font-weight:700}.chat-ai-body code{background:#006fee14;border-radius:4px;padding:1px 5px;font-size:.87em}.chat-ai-body table{border-collapse:collapse;width:100%;margin:.8em 0;font-size:12px}.chat-ai-body th,.chat-ai-body td{border:1px solid var(--border);padding:5px 8px}.chat-ai-body th{background:#0000000a;font-weight:700}.chat-sources{border-top:1px solid var(--border);color:var(--fg-muted);flex-wrap:wrap;align-items:flex-start;gap:8px;margin-top:10px;padding-top:10px;font-size:11px;display:flex}.chat-sources-label{width:100%;margin-bottom:4px;font-weight:700}.source-chip{background:var(--primary);color:#fff;cursor:pointer;border:1px solid var(--primary);user-select:none;border-radius:12px;margin:0;padding:4px 12px;font-size:11px;font-weight:600;text-decoration:none;transition:all .15s;display:inline-block}.source-chip:hover{background:var(--primary-h);border-color:var(--primary-h);text-decoration:underline;transform:translateY(-2px);box-shadow:0 4px 12px #006fee59}.source-chip:active{transform:translateY(0)}.chat-actions{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.chat-action-btn{border:1px solid var(--border);cursor:pointer;color:var(--fg-muted);background:0 0;border-radius:8px;padding:5px 10px;font-family:inherit;font-size:11px;font-weight:600;transition:all .12s}.chat-action-btn:hover{border-color:var(--primary);color:var(--primary)}.chat-thinking{background:var(--card-bg);border:1px solid var(--border);color:var(--fg-muted);border-radius:12px;align-self:flex-start;align-items:center;gap:8px;padding:10px 14px;font-size:12px;display:flex}.thinking-dot{background:var(--primary);opacity:.4;border-radius:50%;width:6px;height:6px;animation:1.2s ease-in-out infinite pulse}.thinking-dot:nth-child(2){animation-delay:.2s}.thinking-dot:nth-child(3){animation-delay:.4s}.chat-input-bar{border-top:1px solid var(--border);background:var(--bg);flex-shrink:0;align-items:center;gap:8px;padding:12px 20px 16px;display:flex}.chat-input-bar input{border:1.5px solid var(--border);background:var(--card-bg);color:var(--fg);border-radius:12px;outline:none;flex:1;padding:11px 16px;font-family:inherit;font-size:14px;transition:border-color .15s}.chat-input-bar input:focus{border-color:var(--primary)}.chat-input-bar input::placeholder{color:var(--fg-muted)}.chat-send-btn{background:var(--primary);color:#fff;cursor:pointer;white-space:nowrap;border:none;border-radius:12px;padding:11px 20px;font-family:inherit;font-size:13px;font-weight:700;transition:background .15s}.chat-send-btn:hover{background:var(--primary-h)}.chat-send-btn:disabled{opacity:.5;cursor:not-allowed}.doc-header{border-bottom:1px solid var(--border);background:var(--bg);z-index:10;flex-shrink:0;align-items:center;gap:12px;padding:74px 28px 14px;display:flex;position:relative}.doc-meta{flex:1;min-width:0}.doc-filename{color:var(--fg);white-space:nowrap;text-overflow:ellipsis;font-size:15px;font-weight:700;overflow:hidden}.doc-path{color:var(--fg-muted);font-size:11px}.doc-action-btn{border:1px solid var(--border);cursor:pointer;color:var(--fg-muted);white-space:nowrap;background:0 0;border-radius:8px;flex-shrink:0;padding:6px 14px;font-family:inherit;font-size:11px;font-weight:600;transition:all .12s}.doc-action-btn:hover{border-color:var(--primary);color:var(--primary)}.doc-view{flex-direction:column}.doc-body{flex:1;min-height:0;padding:20px 32px;overflow-y:auto}.selection-popup{background:var(--card-bg);border:1px solid var(--border);z-index:1000;border-radius:8px;min-width:140px;padding:6px 0;display:none;position:fixed;box-shadow:0 2px 12px #00000026}.selection-popup.active{flex-direction:column;display:flex}.selection-popup-btn{text-align:left;color:var(--fg);cursor:pointer;background:0 0;border:none;padding:8px 12px;font-family:inherit;font-size:12px;font-weight:500;transition:background .12s}.selection-popup-btn:hover{color:var(--primary);background:#006fee14}.question-modal{z-index:2000;justify-content:center;align-items:center;width:100%;height:100%;display:none;position:fixed;top:0;left:0}.question-modal.active{display:flex}.question-modal-overlay{cursor:pointer;background:#00000080;width:100%;height:100%;position:absolute;top:0;left:0}.question-modal-content{background:var(--card-bg);border:1px solid var(--border);border-radius:12px;width:90%;max-width:440px;animation:.3s slideUp;position:relative;box-shadow:0 10px 40px #0003}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.question-modal-header{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:20px;display:flex}.question-modal-header h2{color:var(--fg);margin:0;font-size:16px;font-weight:700}.question-modal-close{cursor:pointer;color:var(--fg-muted);background:0 0;border:none;border-radius:6px;justify-content:center;align-items:center;width:40px;height:40px;padding:0;font-size:20px;transition:all .12s;display:flex}.question-modal-close:hover{color:var(--fg);background:#00000014}.question-modal-body{padding:20px}.question-input{border:1.5px solid var(--border);background:var(--bg);width:100%;color:var(--fg);border-radius:10px;outline:none;padding:12px 16px;font-family:inherit;font-size:14px;transition:border-color .15s}.question-input:focus{border-color:var(--primary)}.question-input::placeholder{color:var(--fg-muted)}.question-modal-footer{border-top:1px solid var(--border);justify-content:flex-end;gap:8px;padding:16px 20px;display:flex}.question-btn-cancel,.question-btn-submit{border:1px solid var(--border);cursor:pointer;background:0 0;border-radius:8px;padding:9px 20px;font-family:inherit;font-size:13px;font-weight:600;transition:all .12s}.question-btn-cancel{color:var(--fg-muted)}.question-btn-cancel:hover{background:var(--card-bg);border-color:var(--border)}.question-btn-submit{background:var(--primary);border-color:var(--primary);color:#fff}.question-btn-submit:hover{background:var(--primary-h);border-color:var(--primary-h)}.chat-document-card{border:1px solid var(--primary);background:#006fee14;border-radius:12px;align-self:flex-end;max-width:60%;margin-bottom:8px;padding:12px 16px}.chat-document-card-header{color:var(--primary);align-items:center;gap:8px;margin-bottom:6px;font-size:13px;font-weight:600;display:flex}.chat-document-card-content{color:var(--fg);font-size:13px;line-height:1.5}.chat-document-card-type{background:var(--primary);color:#fff;border-radius:4px;margin-right:6px;padding:2px 8px;font-size:10px;font-weight:700;display:inline-block}.doc-body{flex:1;margin-top:0;padding:24px 32px;overflow-y:auto}.md-body{color:var(--fg);font-size:14px;line-height:1.8}.md-body h1,.md-body h2,.md-body h3{margin:1.2em 0 .4em;font-weight:700}.md-body h1{border-bottom:1px solid var(--border);padding-bottom:.4em;font-size:1.4em}.md-body h2{font-size:1.2em}.md-body h3{font-size:1.05em}.md-body p{margin:.6em 0}.md-body ul,.md-body ol{margin:.5em 0;padding-left:1.5em}.md-body li{margin:.25em 0}.md-body table{border-collapse:collapse;width:100%;margin:1em 0;font-size:13px}.md-body th,.md-body td{border:1px solid var(--border);padding:6px 10px}.md-body th{background:var(--card-bg);font-weight:700}.md-body code{background:var(--card-bg);border-radius:4px;padding:1px 5px;font-size:.88em}.md-body pre{background:var(--card-bg);border:1px solid var(--border);border-radius:8px;padding:14px;overflow-x:auto}.md-body blockquote{border-left:3px solid var(--primary);color:var(--fg-muted);margin:.8em 0;padding-left:12px}.md-body a{color:var(--primary)}.md-body hr{border:none;border-top:1px solid var(--border);margin:1.5em 0}@media (pointer:coarse){.sidebar-tab,.conv-item,.tree-cat-header,.tree-file,.recent-doc-item,.chat-action-btn,.doc-action-btn,.welcome-chip,.selection-popup-btn,.question-btn-cancel,.question-btn-submit,.question-modal-close{min-height:44px}.conv-item{align-items:center;display:flex}.tree-file{align-items:center}.sidebar-label-btn{min-height:40px;padding:2px 10px}.source-chip{align-items:center;min-height:40px;display:inline-flex}.sidebar-toggle-btn{min-width:44px;min-height:44px}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:.4;transform:scale(.9)}50%{opacity:1;transform:scale(1.1)}}.sidebar-toggle-btn{cursor:pointer;color:var(--fg);background:0 0;border:none;margin-right:8px;padding:8px 12px;font-size:20px;transition:color .12s;display:none}.sidebar-toggle-btn:hover{color:var(--primary)}@media (width<=640px){.sidebar-toggle-btn{display:block}.app-sidebar{z-index:999;background:var(--bg);background-color:var(--bg);width:260px;height:100dvh;transition:transform .3s;position:fixed;top:0;left:0;transform:translate(-260px);box-shadow:0 0 0 9999px #0000}.app-sidebar.sidebar-open{transform:translate(0);box-shadow:0 0 0 9999px #00000080}.sidebar-header{display:none}.app-sidebar.sidebar-open .sidebar-header{display:flex}#chatTitleText{text-align:right;flex:1;padding-right:8px}.chat-filter-bar{padding-left:12px}.chat-messages,.doc-body{padding:16px}.welcome-wrap{padding:56px 20px 24px}[data-theme=dark] .app-sidebar{background-color:var(--bg)}.sidebar-toggle-btn{justify-content:center;align-items:center;display:flex}.drawer-backdrop{z-index:998;background:#00000080;position:fixed;inset:0}.app-sidebar.sidebar-open{box-shadow:none}}.drawer-backdrop[hidden]{display:none}@media (width>=641px){.sidebar-header{display:flex}.drawer-backdrop{display:none}}@media (width<=768px),(pointer:coarse){.welcome-input,.chat-input-bar input,.question-input{font-size:16px}}.welcome-title .app-title-en{color:var(--fg-muted);letter-spacing:0;margin-top:4px;font-size:.55em;font-weight:600;display:block}.welcome-icon{color:var(--primary);line-height:1}.welcome-icon .ic{width:52px;height:52px}.welcome-note{justify-content:center;align-items:center;gap:4px;display:flex}.sidebar-brand,.sidebar-tab,.doc-action-btn,.chat-sources-label,.chat-document-card-type,.sidebar-label-btn,.tree-cat-header>span:nth-child(2){align-items:center;gap:4px;display:inline-flex}.sidebar-tab,.doc-action-btn{justify-content:center}.chat-sources-label{display:flex}.tree-cat-header .arrow{display:inline-flex}.tree-cat-header .arrow .ic{width:12px;height:12px}.question-modal-close .ic{width:20px;height:20px}.chat-thinking .slow-note{color:var(--fg-muted)}.chat-thinking .cancel-btn{border:1px solid var(--border);background:var(--bg);min-height:32px;color:var(--fg);font:inherit;cursor:pointer;border-radius:8px;margin-left:6px;padding:0 12px;font-size:12px;font-weight:600}.chat-thinking .cancel-btn:hover{border-color:var(--danger);color:var(--danger)}@media (pointer:coarse){.chat-thinking .cancel-btn{min-height:44px}}