:root{--bg:#f6f7f9;--surface:#fff;--text:#1c1e24;--muted:#6b7280;--border:#e3e6ea;--accent:#2563eb;--accent-hover:#1d4ed8;--danger:#dc2626;color:var(--text);background:var(--bg);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;font-family:system-ui,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;font-size:15px;line-height:1.5}*{box-sizing:border-box}body{margin:0}button{font:inherit;cursor:pointer;border:1px solid var(--border);background:var(--accent);color:#fff;border-radius:8px;padding:6px 14px}button:hover:not(:disabled){background:var(--accent-hover)}button:disabled{opacity:.6;cursor:default}button.ghost{background:var(--surface);color:var(--text)}button.ghost:hover:not(:disabled){background:var(--bg)}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.app{max-width:720px;margin:0 auto;padding:16px 16px 48px}.topbar{justify-content:space-between;align-items:center;gap:8px;margin-bottom:12px;display:flex}.topbar h1{margin:0;font-size:20px}.actions{gap:8px;display:flex}.banner{border-radius:8px;margin-bottom:12px;padding:10px 14px}.banner.error{color:var(--danger);background:#fef2f2;border:1px solid #fecaca}.banner.ok{color:#15803d;background:#f0fdf4;border:1px solid #bbf7d0}.list{background:var(--surface);border:1px solid var(--border);border-radius:10px;margin:0;padding:0;list-style:none;overflow:hidden}.list li+li{border-top:1px solid var(--border)}.mail-item{text-align:left;width:100%;color:inherit;background:0 0;border:none;border-radius:0;align-items:center;gap:12px;padding:12px 16px;display:flex}.mail-item:hover{background:var(--bg)}.mail-main{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.mail-sender{white-space:nowrap;text-overflow:ellipsis;font-weight:600;overflow:hidden}.mail-subject{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.mail-date{color:var(--muted);white-space:nowrap;font-size:13px}.reply-hint{color:var(--accent);white-space:nowrap;font-size:13px}.sent-item{align-items:center;gap:12px;padding:12px 16px;display:flex}.back-btn{margin-bottom:12px}.section-title{color:var(--muted);margin:20px 0 8px;font-size:14px;font-weight:600}.empty{color:var(--muted);text-align:center;margin:0;padding:40px 0}.editor{background:var(--surface);border:1px solid var(--border);border-radius:10px;flex-direction:column;gap:12px;padding:16px;display:flex}.editor label{color:var(--muted);flex-direction:column;gap:4px;font-size:13px;display:flex}.editor input,.editor textarea{font:inherit;color:var(--text);border:1px solid var(--border);background:var(--bg);border-radius:8px;padding:8px 10px}.editor textarea{resize:vertical}.editor-actions{justify-content:flex-end;gap:8px;display:flex}.site-header{justify-content:space-between;align-items:center;gap:12px;padding:14px 0;display:flex}.site-title{font-size:18px;font-weight:700}.site-header nav{gap:4px;display:flex}.nav-link{color:var(--muted);border-radius:8px;padding:6px 14px;font-weight:500;text-decoration:none}.nav-link:hover{background:var(--surface);color:var(--text)}.nav-link.active{background:var(--surface);color:var(--accent)}.page-actions{justify-content:flex-end;gap:8px;margin-bottom:12px;display:flex}.kb-search{gap:8px;margin-bottom:12px;display:flex}.kb-search input{font:inherit;border:1px solid var(--border);background:var(--surface);border-radius:8px;flex:1;padding:8px 12px}.result-item{text-align:left;width:100%;color:inherit;background:0 0;border:none;border-radius:0;flex-direction:column;gap:6px;padding:14px 16px;display:flex}.result-item:hover{background:var(--bg)}.result-title{align-items:center;gap:8px;font-weight:600;display:flex}.result-heading{color:var(--accent);background:#eff6ff;border-radius:6px;padding:1px 8px;font-size:12px;font-weight:500}.result-snippet{color:var(--muted);white-space:pre-wrap;word-break:break-all}.result-meta{color:var(--muted);font-size:12px}mark{color:inherit;background:#fde68a;border-radius:2px;padding:0 1px}.doc-header{align-items:center;gap:10px;margin-bottom:12px;display:flex}.doc-header h2{white-space:nowrap;text-overflow:ellipsis;flex:1;margin:0;font-size:16px;overflow:hidden}.doc-view{background:var(--surface);border:1px solid var(--border);border-radius:10px;max-height:70vh;font-size:14px;overflow:hidden auto}.doc-line{white-space:pre-wrap;word-break:break-all;gap:12px;padding:1px 14px;display:flex}.doc-line .ln{color:#9ca3af;text-align:right;-webkit-user-select:none;user-select:none;min-width:2.5em}.doc-line.anchor{background:#fef9c3}.paper-form{gap:8px;margin-bottom:12px;display:flex}.paper-form input{font:inherit;border:1px solid var(--border);background:var(--surface);border-radius:8px;flex:1;padding:8px 12px}.paper-item{text-align:left;width:100%;color:inherit;background:0 0;border:none;border-radius:0;align-items:center;gap:12px;padding:14px 16px;display:flex}.paper-item:hover{background:var(--bg)}.paper-main{flex-direction:column;flex:1;gap:2px;min-width:0;display:flex}.paper-title{font-weight:600}.paper-meta{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.status-badge{white-space:nowrap;background:var(--bg);color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:2px 10px;font-size:12px}.status-badge.done{color:#15803d;background:#f0fdf4;border-color:#bbf7d0}.status-badge.importing{color:var(--accent);background:#eff6ff;border-color:#bfdbfe}.status-badge.failed{color:var(--danger);background:#fef2f2;border-color:#fecaca}.paper-detail{flex-direction:column;gap:16px;display:flex}.paper-header{justify-content:space-between;align-items:center;gap:8px;display:flex}.paper-detail-title{margin:0;font-size:20px;line-height:1.4}.paper-detail-meta{color:var(--muted);margin:0;font-size:14px}.paper-abstract{color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:10px;margin:0;padding:12px 14px;font-size:14px}.paper-actions{flex-wrap:wrap;gap:8px;display:flex}.btn-link{font:inherit;border:1px solid var(--border);background:var(--accent);color:#fff;border-radius:8px;padding:6px 14px;text-decoration:none;display:inline-block}button.danger{color:var(--danger)}.section-head{justify-content:space-between;align-items:center;gap:8px;display:flex}section h3{margin:0 0 10px;font-size:15px}.note-list{flex-direction:column;gap:10px;margin:0;padding:0;list-style:none;display:flex}.note{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:10px 12px}.note textarea{width:100%;font:inherit;resize:vertical;color:var(--text);background:0 0;border:none}.note textarea:focus-visible{outline:none}.note-foot{justify-content:space-between;align-items:center;gap:8px;margin-top:4px;display:flex}.note-meta{color:var(--muted);font-size:12px}.qa-form{gap:8px;margin-bottom:8px;display:flex}.qa-form input{font:inherit;border:1px solid var(--border);background:var(--surface);border-radius:8px;flex:1;padding:8px 12px}.hint{color:var(--muted);margin:0;font-size:13px}.qa-result{background:var(--surface);border:1px solid var(--border);border-radius:10px;margin-top:12px;padding:14px 16px}.qa-answer{white-space:pre-wrap;margin:0 0 10px}.qa-sources-title{color:var(--muted);margin:0 0 6px;font-size:13px}.qa-sources{color:var(--muted);flex-direction:column;gap:6px;margin:0;padding:0;font-size:13px;list-style:none;display:flex}.qa-page{color:var(--accent);margin-right:6px;font-weight:600}.qa-actions{justify-content:flex-end;margin-top:10px;display:flex}