.merge-root{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial}.upload-zone{border:2px dashed #e5e7eb;padding:18px;border-radius:10px;display:flex;justify-content:center;align-items:center;gap:12px;background:#fff}.upload-zone.drag-over{border-color:#2563eb;background:rgba(37,99,235,.03)}.upload-inner{display:flex;gap:12px;align-items:center}.cta-btn{background:#2563eb;color:#fff;border:none;padding:10px 16px}.cta-btn,.small-btn{border-radius:8px;cursor:pointer}.small-btn{padding:8px 10px;border:1px solid #e5e7eb;background:#fff}.pdf-card,.pdf-card-horiz{position:relative}.progress-modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(15,23,42,.6);backdrop-filter:blur(4px);z-index:9999}.progress-card{background:#fff;padding:24px;border-radius:16px;width:min(480px,95%);text-align:center;box-shadow:0 20px 40px rgba(0,0,0,.1)}.progress-bar{height:10px;background:#eef2ff;border-radius:999px;margin:16px 0;overflow:hidden}.progress-inner{height:100%;width:0;background:#46e5bd;transition:width .2s linear}.progress-text{font-weight:600;color:#475569}.primary{background:#46e5bd;color:#fff;padding:10px 16px;border-radius:12px;text-decoration:none;border:none;font-weight:700}.primary:hover{opacity:.9;cursor:pointer}.primary:disabled{opacity:.5;cursor:not-allowed}.muted{background:transparent;border:1px solid #e2e8f0;padding:10px 16px;border-radius:12px;cursor:pointer;font-weight:700;color:#64748b}.muted:hover{background:#f8fafc;color:#0f172a}