.upload-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}.upload-zone{background:var(--card);border:2px dashed var(--border);border-radius:var(--r);padding:48px 24px;text-align:center;cursor:pointer;transition:all .15s;position:relative;min-height:300px}.upload-zone:hover{border-color:var(--t3);background:var(--surface)}.upload-zone.dragover{border-color:var(--accent);background:var(--accent-s)}.upload-zone.has-file{border-style:solid;border-color:var(--border);padding:0;overflow:hidden;cursor:default;text-align:left}.upload-zone.has-file:hover{background:var(--card);border-color:var(--border)}.upload-icon{margin-bottom:12px;color:var(--t3);display:flex;justify-content:center}.upload-label{font-size:13px;font-weight:600;color:var(--t1);margin-bottom:4px;display:flex;align-items:center;justify-content:center;gap:6px}.upload-label .dot{width:8px;height:8px;border-radius:50%;display:inline-block}.dot-a{background:var(--t3)}.dot-b{background:var(--accent)}.upload-hint{font-size:12.5px;color:var(--t3);margin-top:4px}.upload-btn{display:inline-block;margin-top:14px;font-family:var(--f);font-size:12.5px;font-weight:500;color:var(--accent-t);background:var(--accent-s);border:none;padding:6px 16px;border-radius:var(--rx);cursor:pointer}.upload-btn:hover{background:var(--accent);color:#fff}.upload-formats{font-size:11px;color:var(--t4);margin-top:10px}.img-preview.sheet-preview{width:100%;height:200px;display:flex;align-items:center;justify-content:center;background:var(--surface);overflow:hidden;flex-direction:column;gap:10px;color:var(--t3);padding:16px}.img-preview.sheet-preview svg{flex-shrink:0}.pdf-preview-name{font-size:12.5px;color:var(--t2);max-width:90%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}.sheet-picker{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--t2)}.sheet-picker-label{font-size:11px;font-weight:500;color:var(--t3)}.sheet-select{font-family:var(--f);font-size:12px;color:var(--t1);background:var(--card);border:1px solid var(--border);border-radius:var(--rx);padding:3px 8px;max-width:160px}.preview-bar{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;border-top:1px solid var(--border);gap:12px;flex-wrap:wrap}.preview-name{font-size:12.5px;font-weight:500;color:var(--t1);display:flex;align-items:center;gap:6px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.preview-name .dot{width:8px;height:8px;border-radius:50%;display:inline-block;flex-shrink:0}.preview-meta{font-size:11.5px;color:var(--t3);font-variant-numeric:tabular-nums;white-space:nowrap}.preview-remove{font-family:var(--f);font-size:11.5px;font-weight:500;color:var(--rm-t);background:none;border:none;cursor:pointer;padding:0}.preview-remove:hover{text-decoration:underline}.inputs.off,.results{display:none}.results.on{display:block}.nodiff-card{display:none;background:var(--card);border:1.5px solid var(--add-line);border-radius:var(--r);padding:32px;text-align:center;margin-bottom:16px}.nodiff-card.visible{display:block}.nodiff-icon{width:48px;height:48px;border-radius:50%;background:var(--add-bg);display:flex;align-items:center;justify-content:center;margin:0 auto 14px}.nodiff-title{font-size:18px;font-weight:700;letter-spacing:-.3px;margin-bottom:4px;color:var(--add-t)}.nodiff-desc{font-size:14px;color:var(--t2);line-height:1.5;max-width:380px;margin:0 auto}.sheet-table-wrap{background:var(--card);border:1px solid var(--border);border-radius:var(--r);overflow:auto;margin-bottom:16px;max-height:75vh}.sheet-table{width:100%;border-collapse:separate;border-spacing:0;font-size:13px;font-variant-numeric:tabular-nums}.sheet-table thead th{position:sticky;top:0;z-index:2;background:var(--surface);color:var(--t2);font-weight:600;text-align:left;padding:8px 12px;border-bottom:1px solid var(--border);white-space:nowrap}.sheet-table .sheet-gutter{position:sticky;left:0;z-index:1;background:var(--surface);color:var(--t3);font-weight:500;text-align:right;padding:6px 10px;border-right:1px solid var(--border);min-width:48px;font-size:11.5px}.sheet-table thead .sheet-gutter{z-index:3}.sheet-table-wrap.sticky-first-col .sheet-table tbody td:nth-child(2){position:sticky;left:48px;z-index:1;background:inherit;border-right:1px solid var(--border)}.sheet-table-wrap.sticky-first-col .sheet-table thead th:nth-child(2){z-index:3;left:48px}.sheet-table tbody tr{background:var(--card)}.sheet-table tbody tr.sheet-row-changed{background:#fffefa}.sheet-table tbody tr.sheet-row-added{background:var(--add-bg)}.sheet-table tbody tr.sheet-row-removed{background:var(--rm-bg);text-decoration:line-through;text-decoration-color:var(--rm-line)}.sheet-cell{padding:6px 12px;border-bottom:1px solid var(--border);max-width:280px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;vertical-align:top}.sheet-cell-changed{background:#fff7ec;display:flex;flex-direction:column;gap:2px;padding:5px 12px}.sheet-cell-old{color:var(--rm-t);text-decoration:line-through;text-decoration-color:var(--rm-line);font-size:11.5px}.sheet-cell-new{color:var(--add-t);font-weight:500}.sheet-collapsed-row td{background:var(--bg)}.sheet-collapsed-cell{padding:8px 16px;text-align:center}.sheet-expand{font-family:var(--f);font-size:12px;font-weight:500;color:var(--accent-t);background:none;border:1px dashed var(--border);padding:4px 12px;border-radius:var(--rx);cursor:pointer}.sheet-expand:hover{background:var(--accent-s);border-color:var(--accent-s)}.sheet-sbs-wrap{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--border);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;margin-bottom:16px}.sheet-sbs-side{background:var(--card);overflow:auto;max-height:75vh;display:flex;flex-direction:column}.sheet-sbs-header{padding:10px 16px;border-bottom:1px solid var(--border);font-size:12px;font-weight:600;color:var(--t2);display:flex;align-items:center;gap:6px;background:var(--card);position:sticky;top:0;z-index:4}.sheet-sbs-header .dot{width:8px;height:8px;border-radius:50%;display:inline-block}.sheet-cell-rm{background:var(--rm-bg);color:var(--rm-t);font-weight:500}.sheet-cell-add{background:var(--add-bg);color:var(--add-t);font-weight:500}.sheet-spacer{background:var(--surface)}.file-details{background:var(--card);border:1px solid var(--border);border-radius:var(--r);margin-bottom:16px;overflow:hidden}.fd-toggle{width:100%;display:flex;align-items:center;gap:6px;padding:12px 16px;font-family:var(--f);font-size:13px;font-weight:600;color:var(--t2);background:none;border:none;cursor:pointer;transition:all .12s}.fd-toggle:hover{color:var(--t1);background:var(--surface)}.fd-toggle svg{transition:transform .2s}.file-details.open .fd-toggle svg{transform:rotate(180deg)}.fd-panel{display:none;border-top:1px solid var(--border)}.file-details.open .fd-panel{display:block}.fd-grid{display:grid;grid-template-columns:1fr auto 1fr;font-size:13px}.fd-header{padding:10px 16px;font-size:11px;font-weight:600;color:var(--t3);text-transform:uppercase;letter-spacing:.3px;background:var(--surface);display:flex;align-items:center;gap:6px}.fd-header .dot{width:8px;height:8px;border-radius:50%;display:inline-block}.fd-header-mid{padding:10px 16px;font-size:11px;font-weight:600;color:var(--t3);text-transform:uppercase;letter-spacing:.3px;background:var(--surface);text-align:center;min-width:120px}.fd-val{padding:8px 16px;border-bottom:1px solid var(--border);color:var(--t1);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.fd-prop{padding:8px 16px;border-bottom:1px solid var(--border);color:var(--t3);text-align:center;font-size:12px;border-left:1px solid var(--border);border-right:1px solid var(--border)}.fd-diff{color:var(--rm-t);font-weight:500}.ai.hidden{display:none}@media (max-width:740px){.upload-grid,.sheet-sbs-wrap{grid-template-columns:1fr}.sheet-sbs-side:last-child{display:none}}