:root{--primary:#1a6fb5;--primary-dark:#1254a0;--primary-light:#e8f2fb;--bg:#f0f4f8;--panel:#fff;--border:#dde3ea;--text:#1e2a38;--text-sub:#678;--error:#dc2626;--header-bg:#0d3566;--radius:8px;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Segoe UI,sans-serif;font-size:14px;line-height:1.6}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html,body,#app{height:100%;overflow:hidden}#app{flex-direction:column;display:flex}.app-header{background:var(--header-bg);color:#fff;z-index:10;flex-shrink:0;align-items:center;gap:10px;height:52px;padding:0 20px;display:flex;box-shadow:0 2px 8px #00000040}.app-header .logo{background:#ffffff26;border-radius:7px;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:17px;display:flex}.app-header h1{letter-spacing:.4px;font-size:16px;font-weight:700}.model-select-wrap{align-items:center;gap:6px;margin-left:auto;display:flex}.model-select-wrap label{color:#fff9;white-space:nowrap;font-size:11px}.model-select{color:#fff;cursor:not-allowed;opacity:.65;user-select:none;pointer-events:none;appearance:none;background:#ffffff14 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='rgba(255,255,255,0.45)'/%3E%3C/svg%3E") right 8px center no-repeat;border:1px solid #ffffff2e;border-radius:6px;outline:none;max-width:220px;padding:4px 24px 4px 10px;font-family:inherit;font-size:12px;transition:background-color .15s,border-color .15s}.model-select:hover{background-color:#ffffff14;border-color:#ffffff2e}.model-select:focus{border-color:#ffffff2e}.model-select option{color:#fff;background:#1a3060}.main-layout{background:var(--border);flex:1;gap:1px;display:flex;overflow:hidden}.panel-header{border-bottom:1px solid var(--border);background:#fafbfc;flex-shrink:0;align-items:center;gap:8px;height:44px;padding:0 16px;display:flex}.panel-header .ph-icon{font-size:16px}.panel-header h2{color:var(--text);font-size:13px;font-weight:600}.panel-header .ph-badge{background:var(--primary-light);color:var(--primary);border-radius:20px;margin-left:auto;padding:2px 8px;font-size:11px;font-weight:600}.panel-header .ph-hint{color:var(--text-sub);margin-left:auto;font-size:11px}.panel-header .ph-action{align-items:center;gap:8px;margin-left:auto;display:flex}.copy-btn{border:1px solid var(--border);color:var(--text-sub);cursor:pointer;background:#fff;border-radius:5px;padding:3px 10px;font-size:11px;transition:all .15s}.copy-btn:hover{border-color:var(--primary);color:var(--primary)}.copy-btn.copied{color:#166534;background:#ecfdf3;border-color:#16a34a}.copy-btn.copy-failed{border-color:var(--error);color:var(--error);background:#fef2f2}.left-panel{background:var(--panel);flex-direction:column;width:33.333%;min-width:280px;display:flex;overflow:hidden}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius);text-align:center;cursor:pointer;user-select:none;flex-shrink:0;margin:12px 14px 8px;padding:20px 12px;transition:border-color .2s,background .2s}.upload-zone:hover,.upload-zone.drag-over{border-color:var(--primary);background:var(--primary-light)}.upload-zone .uz-icon{background:var(--primary-light);border-radius:50%;justify-content:center;align-items:center;width:38px;height:38px;margin:0 auto 8px;font-size:18px;display:flex}.upload-zone .uz-main{color:var(--text);font-size:13px;font-weight:500}.upload-zone .uz-main em{color:var(--primary);font-style:normal;font-weight:600}.upload-zone .uz-hint{color:var(--text-sub);margin-top:3px;font-size:11px}.uz-actions{justify-content:center;gap:8px;margin:8px 0 4px;display:flex}.uz-btn{border:1px solid var(--primary);color:var(--primary);cursor:pointer;background:#fff;border-radius:5px;align-items:center;gap:4px;padding:5px 13px;font-family:inherit;font-size:12px;font-weight:600;transition:all .15s;display:inline-flex}.uz-btn:hover{background:var(--primary);color:#fff}.file-list-wrap{flex:1;padding:0 14px 14px;overflow-y:auto}.file-list-header{justify-content:space-between;align-items:center;padding:6px 0;display:flex}.file-list-label{color:var(--text-sub);text-transform:uppercase;letter-spacing:.6px;font-size:11px;font-weight:700}.file-item{border:1px solid var(--border);cursor:pointer;user-select:none;background:#fafbfc;border-radius:6px;align-items:center;gap:8px;margin-bottom:7px;padding:7px 9px;transition:border-color .15s,background .15s,box-shadow .15s;display:flex}.file-item:hover{background:#f0f7ff;border-color:#a8c4e0}.file-item.selected{border-color:var(--primary);background:var(--primary-light);box-shadow:0 0 0 2px #1a6fb52e}.file-thumb{border:1px solid var(--border);background:#e8ecf0;border-radius:5px;flex-shrink:0;justify-content:center;align-items:center;width:42px;height:42px;font-size:18px;display:flex;position:relative;overflow:visible}.file-thumb-inner{background:#e8ecf0;border-radius:4px;justify-content:center;align-items:center;width:100%;height:100%;font-size:18px;display:flex;overflow:hidden}.file-thumb img{object-fit:cover;width:100%;height:100%;display:block}.sel-mark{color:#0000;pointer-events:none;background:#c8d0da;border:2px solid #fff;border-radius:50%;justify-content:center;align-items:center;width:16px;height:16px;font-size:8px;font-weight:700;transition:background .15s,color .15s;display:flex;position:absolute;bottom:-5px;right:-5px}.file-item.selected .sel-mark{background:var(--primary);color:#fff}.pdf-badge{color:#fff;pointer-events:none;z-index:1;white-space:nowrap;background:#c0392b;border:1.5px solid #fff;border-radius:3px;padding:1px 4px;font-size:8px;font-weight:700;line-height:1.4;position:absolute;top:-4px;left:-4px}.file-meta{flex:1;min-width:0}.file-name{color:var(--text);text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:500;overflow:hidden}.file-size{color:var(--text-sub);margin-top:1px;font-size:11px}.file-del{width:22px;height:22px;color:var(--text-sub);cursor:pointer;background:0 0;border:none;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;font-size:15px;line-height:1;transition:background .15s,color .15s;display:flex}.file-del:hover{color:var(--error);background:#fee2e2}.file-context-menu{z-index:260;border:1px solid var(--border);background:#fff;border-radius:8px;min-width:120px;padding:6px;position:fixed;box-shadow:0 10px 28px #0000002e}.file-context-menu-item{width:100%;color:var(--text);text-align:left;cursor:pointer;background:0 0;border:0;border-radius:6px;padding:7px 9px;font-family:inherit;font-size:12px}.file-context-menu-item:hover,.file-context-menu-item:focus-visible{background:var(--primary-light);color:var(--primary);outline:none}.file-context-menu-item.danger{color:var(--error)}.file-context-menu-item.danger:hover,.file-context-menu-item.danger:focus-visible{color:var(--error);background:#fee2e2}.empty-state{text-align:center;color:var(--text-sub);padding:28px 0}.empty-state .es-icon{opacity:.4;margin-bottom:8px;font-size:34px}.empty-state p{font-size:12px}.right-panel{background:var(--panel);flex-direction:column;flex:1;display:flex;overflow:hidden}.prompt-section{border-bottom:1px solid var(--border);flex-direction:column;flex-shrink:0;height:33.333%;min-height:160px;display:flex}.prompt-body{flex-direction:column;flex:1;padding:10px 14px;display:flex;overflow:hidden}.prompt-textarea{resize:none;border:1px solid var(--border);border-radius:var(--radius);width:100%;color:var(--text);background:#fafbfc;outline:none;flex:1;min-height:0;padding:9px 11px;font-family:inherit;font-size:13px;line-height:1.65;transition:border-color .2s,box-shadow .2s}.prompt-textarea:focus{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px #1a6fb51a}.prompt-textarea::placeholder{color:#a8b4c0}.analyze-bar{border-bottom:1px solid var(--border);background:#f7f9fb;flex-shrink:0;justify-content:space-between;align-items:center;gap:12px;padding:10px 16px;display:flex}.analyze-info{color:var(--text-sub);font-size:12px;line-height:1.6}.analyze-info .cnt{color:var(--primary);font-weight:700}.analyze-info .cnt-zero{color:var(--text-sub);font-weight:700}.analyze-btn{background:var(--primary);color:#fff;letter-spacing:.4px;cursor:pointer;border:none;border-radius:6px;align-items:center;gap:7px;padding:8px 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p{font-size:13px}.thinking{color:var(--primary);align-items:center;gap:10px;margin-bottom:14px;font-size:13px;display:flex}.thinking-dots{gap:4px;display:flex}.thinking-dot{background:var(--primary);border-radius:50%;width:6px;height:6px;animation:1.4s ease-in-out infinite dot-bounce}.thinking-dot:nth-child(2){animation-delay:.2s}.thinking-dot:nth-child(3){animation-delay:.4s}@keyframes dot-bounce{0%,80%,to{opacity:.45;transform:scale(.55)}40%{opacity:1;transform:scale(1)}}.output-text{white-space:pre-wrap;word-break:break-word;color:var(--text);font-size:14px;line-height:1.85}.output-text .md-h2{color:var(--primary);border-bottom:1px solid var(--border);margin-top:10px;padding-bottom:3px;font-size:15px;font-weight:700;display:block}.output-text .md-h3{color:var(--text);margin-top:8px;font-size:14px;font-weight:600;display:block}.error-box{border-left:3px solid var(--error);color:var(--error);background:#fef2f2;border-radius:6px;padding:12px 14px;font-size:13px;line-height:1.7}.error-box strong{margin-bottom:4px;display:block}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:#c8d0da;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#a8b4c0}.modal-overlay{z-index:200;backdrop-filter:blur(2px);background:#0a142880;justify-content:center;align-items:center;animation:.15s overlay-in;display:flex;position:fixed;inset:0}.modal-overlay.modal-closing{animation:.16s forwards overlay-out}.modal-overlay.modal-closing .modal-dialog{animation:.16s forwards dialog-out}@keyframes overlay-in{0%{opacity:0}to{opacity:1}}@keyframes overlay-out{to{opacity:0}}@keyframes dialog-in{0%{opacity:0;transform:scale(.94)translateY(-10px)}to{opacity:1;transform:scale(1)translateY(0)}}@keyframes dialog-out{to{opacity:0;transform:scale(.94)translateY(-10px)}}.modal-dialog{background:#fff;border-radius:12px;width:420px;max-width:92vw;animation:.15s dialog-in;overflow:hidden;box-shadow:0 24px 64px #00000038}.modal-header{border-bottom:1px solid var(--border);background:#f7f9fb;align-items:center;gap:10px;padding:18px 20px 14px;display:flex}.modal-icon{font-size:20px}.modal-header h3{color:var(--text);font-size:15px;font-weight:700}.modal-body{padding:16px 20px}.modal-meta{background:var(--primary-light);border:1px solid #1a6fb526;border-radius:6px;align-items:center;gap:10px;margin-bottom:14px;padding:8px 12px;display:flex}.modal-meta-label{color:var(--text-sub);white-space:nowrap;font-size:12px}.modal-meta-value{color:var(--primary);background:#1a6fb51f;border-radius:20px;padding:2px 10px;font-size:12px;font-weight:700}.modal-files-label{color:var(--text-sub);margin-bottom:8px;font-size:13px}.modal-files-label strong{color:var(--text)}.modal-file-list{flex-direction:column;gap:5px;max-height:200px;list-style:none;display:flex;overflow-y:auto}.modal-file-list li{color:var(--text);border:1px solid var(--border);text-overflow:ellipsis;white-space:nowrap;background:#f5f6fa;border-radius:5px;align-items:center;gap:7px;padding:6px 10px;font-size:13px;display:flex;overflow:hidden}.modal-file-list li:before{content:"📄";flex-shrink:0;font-size:13px}.modal-footer{border-top:1px solid var(--border);justify-content:flex-end;gap:10px;padding:12px 20px 16px;display:flex}.modal-btn{cursor:pointer;border:none;border-radius:6px;align-items:center;gap:6px;padding:8px 20px;font-size:13px;font-weight:600;transition:all .15s;display:flex}.modal-cancel{color:var(--text-sub);border:1px solid var(--border);background:#f0f2f5}.modal-cancel:hover{color:var(--text);background:#e4e7eb}.modal-confirm{background:var(--primary);color:#fff}.modal-confirm:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px #1a6fb54d}.modal-confirm:active{transform:translateY(0)}