:root{--bg: #f6f7f9;--card: #ffffff;--ink: #1f2430;--muted: #6b7280;--line: #e5e7eb;--brand: #2f6df6;--brand-ink: #ffffff;--ok: #16a34a;--warn: #d97706;--err: #dc2626;--radius: 14px;--shadow: 0 1px 3px rgba(16, 24, 40, .08), 0 8px 24px rgba(16, 24, 40, .06)}*{box-sizing:border-box}[hidden]{display:none!important}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;background:var(--bg);color:var(--ink);line-height:1.5}.topbar{display:flex;align-items:baseline;gap:12px;padding:18px 24px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:100}.brand{font-size:20px;font-weight:700}.tagline{color:var(--muted);font-size:13px}.container{max-width:720px;margin:24px auto;padding:0 16px;display:flex;flex-direction:column;gap:16px}.dropzone{background:var(--card);border:2px dashed var(--line);border-radius:var(--radius);padding:40px 20px;text-align:center;cursor:pointer;transition:border-color .15s,background .15s}.dropzone.dragover{border-color:var(--brand);background:#f0f6ff}.dz-icon{font-size:40px}.dz-title{font-size:16px;font-weight:600;margin-top:6px}.dz-hint{color:var(--muted);font-size:13px;margin-top:4px}.filelist-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;box-shadow:var(--shadow)}.filelist-head{display:flex;justify-content:space-between;align-items:center;font-size:14px;color:var(--muted);margin-bottom:8px}.filelist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.filelist li{display:flex;align-items:center;gap:10px;padding:8px 10px;border:1px solid var(--line);border-radius:10px;font-size:14px}.file-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.badge{font-size:12px;padding:2px 8px;border-radius:999px;background:#eef2ff;color:#3730a3;white-space:nowrap}.badge.train{background:#fef3c7;color:#92400e}.badge.small4{background:#dcfce7;color:#166534}.badge.others{background:#e0f2fe;color:#075985}.badge.a4{background:#f3e8ff;color:#6b21a8}.badge.badge-processing{background:#f3f4f6;color:#6b7280;animation:badge-pulse 1.2s ease-in-out infinite}.badge.badge-error{background:#fef2f2;color:#dc2626}@keyframes badge-pulse{0%,to{opacity:1}50%{opacity:.45}}.item-processing{opacity:.55}.item-error .file-name{color:var(--err)}.remove-btn{border:none;background:transparent;color:var(--muted);cursor:pointer;font-size:16px;line-height:1}.adv{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:8px 14px}.adv summary{cursor:pointer;font-size:14px;color:var(--muted)}.adv-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;padding:12px 0 4px}.adv-grid label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}.adv-grid select,.adv-grid input{padding:8px 10px;border:1px solid var(--line);border-radius:8px;font-size:14px;color:var(--ink)}.primary-btn{display:inline-block;text-align:center;background:var(--brand);color:var(--brand-ink);border:none;border-radius:10px;padding:12px 18px;font-size:15px;font-weight:600;cursor:pointer;text-decoration:none}.primary-btn:disabled{opacity:.5;cursor:not-allowed}.link-btn{background:none;border:none;color:var(--brand);cursor:pointer;font-size:14px}.progress-wrap{display:flex;flex-direction:column;gap:6px}.progress-bar{height:8px;background:var(--line);border-radius:999px;overflow:hidden}.progress-fill{height:100%;width:0%;background:var(--brand);transition:width .2s}.progress-text{font-size:13px;color:var(--muted)}.result-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:12px}.result-text{font-size:14px}.result-actions{display:flex;gap:12px;align-items:center}.preview-wrap{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}.preview-title{font-size:13px;color:var(--muted);margin-bottom:8px}.preview-box{position:relative;width:100%;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden;display:flex;align-items:center;justify-content:center}#previewCanvas{display:block;max-width:100%;max-height:100%}.preview-placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px;pointer-events:none}.error-text{background:#fef2f2;color:var(--err);border:1px solid #fecaca;border-radius:10px;padding:10px 12px;font-size:14px}.footer{text-align:center;color:var(--muted);font-size:12px;padding:12px 16px;background:var(--bg);position:sticky;bottom:0;z-index:100}