body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.office-logo{color:#fff;font-weight:700;font-size:16px;padding:16px;white-space:nowrap;overflow:hidden}.office-header{background:#fff;display:flex;align-items:center;gap:12px;padding:0 16px;border-bottom:1px solid #eee}.office-content{padding:16px}.k-badge{color:#cf1322;font-weight:700}.po-board{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;align-items:start}.po-col{background:#f5f6f8;border:1px solid transparent;border-radius:8px;padding:8px;min-height:120px}.po-col-over{border-color:#1677ff;background:#e9f2ff}.po-col-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px;font-size:12px}.po-col-empty{text-align:center;padding:16px 0;font-size:12px}.po-card{background:#fff;border:1px solid #e5e7eb;border-radius:6px;padding:8px 10px;margin-bottom:8px;cursor:pointer;display:flex;flex-direction:column;gap:4px}.po-card[draggable=true]{cursor:grab}.po-card:hover{border-color:#1677ff}.po-card-title{font-weight:600}.po-card-meta{display:flex;justify-content:space-between;gap:8px;font-size:12px;color:#666}