:root{--bg: #f6f7f9;--surface: #ffffff;--surface-2: #eef0f3;--text: #1a1d21;--text-muted: #5c6470;--border: #d7dbe0;--primary: #1f6feb;--primary-text: #ffffff;--danger: #c93c37;--warning-bg: #fff4e0;--warning-border: #e0a53a;--ok: #2b8a4b;--highlight-old: #fde8e8;--highlight-new: #e3f2e6;--highlight-ambiguous: #fff4d6;--radius-control: 8px;--radius-box: 2px;--font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--mono: ui-monospace, Consolas, "Cascadia Mono", monospace}@media (prefers-color-scheme: dark){:root{--bg: #14171b;--surface: #1d2127;--surface-2: #272c33;--text: #e7eaee;--text-muted: #9aa3ad;--border: #39404a;--primary: #3b82f6;--primary-text: #ffffff;--danger: #e5534b;--warning-bg: #3a2f17;--warning-border: #b98a2e;--ok: #46a35e;--highlight-old: #45292b;--highlight-new: #23402b;--highlight-ambiguous: #403516}}*{box-sizing:border-box}html,body,#root{margin:0;height:100%}body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:14px;line-height:1.5}h1,h2,h3{margin:0 0 8px;line-height:1.3;overflow-wrap:anywhere}p{overflow-wrap:anywhere}.app{display:flex;flex-direction:column;min-height:100%}.app-header{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:14px 20px;background:var(--surface);border-bottom:1px solid var(--border)}.app-header .brand{font-weight:700;font-size:16px}.app-header .tagline{color:var(--text-muted)}.app-main{flex:1;padding:20px;max-width:1400px;width:100%;margin:0 auto}.box{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-box);padding:16px}.box+.box{margin-top:16px}button{font:inherit;cursor:pointer}.btn{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:var(--radius-control);border:1px solid transparent;white-space:nowrap}.btn-primary{background:var(--primary);color:var(--primary-text);border-color:var(--primary)}.btn-primary:hover{filter:brightness(1.08)}.btn-secondary{background:var(--surface);color:var(--text);border-color:var(--border)}.btn-secondary:hover{background:var(--surface-2)}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}input[type=text],input[type=number],select{font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-control);padding:6px 10px}label,.muted{color:var(--text-muted)}.mono{font-family:var(--mono);font-size:12.5px;overflow-wrap:anywhere}.dropzones{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media (max-width: 720px){.dropzones{grid-template-columns:1fr}}.dropzone{border:2px dashed var(--border);border-radius:var(--radius-box);background:var(--surface);padding:24px 16px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:8px}.dropzone.dragover{border-color:var(--primary);background:var(--surface-2)}.dropzone .role{font-weight:600}.file-chip{display:inline-flex;gap:8px;align-items:center;background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-control);padding:4px 10px;max-width:100%}.file-chip span{overflow-wrap:anywhere}.badge{display:inline-block;padding:1px 8px;border-radius:999px;font-size:12px;border:1px solid var(--border);background:var(--surface-2)}.badge.warning{background:var(--warning-bg);border-color:var(--warning-border)}.badge.material{border-color:var(--primary)}.badge.ambiguous{background:var(--highlight-ambiguous);border-color:var(--warning-border)}.tiles{display:flex;gap:12px;flex-wrap:wrap}.tile{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-box);padding:10px 16px;min-width:110px}.tile .n{font-size:22px;font-weight:700}.tile .l{color:var(--text-muted);font-size:12px}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border);margin-bottom:16px;flex-wrap:wrap}.tab{border:1px solid transparent;border-bottom:none;background:transparent;color:var(--text-muted);padding:8px 14px;border-radius:var(--radius-control) var(--radius-control) 0 0}.tab.active{background:var(--surface);border-color:var(--border);color:var(--text);font-weight:600}.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:12px}.change-item{border:1px solid var(--border);border-radius:var(--radius-box);background:var(--surface);padding:10px 14px;margin-bottom:8px;display:flex;flex-direction:column;gap:4px}.change-item .head{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.change-item .loc{font-weight:600}.change-item.selected{outline:2px solid var(--primary)}.change-vals{display:flex;gap:12px;flex-wrap:wrap}.change-vals .val{padding:2px 8px;border-radius:var(--radius-box)}.val.old{background:var(--highlight-old)}.val.new{background:var(--highlight-new)}.grids{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media (max-width: 900px){.grids{grid-template-columns:1fr}}.grid-pane{border:1px solid var(--border);border-radius:var(--radius-box);background:var(--surface);overflow:hidden}.grid-pane .pane-title{padding:8px 12px;border-bottom:1px solid var(--border);font-weight:600;background:var(--surface-2);overflow-wrap:anywhere}.grid-scroll{overflow:auto;height:420px;position:relative}.grid-row{display:flex;position:absolute;left:0}.grid-cell{flex:0 0 110px;width:110px;padding:2px 6px;border-right:1px solid var(--border);border-bottom:1px solid var(--border);font-size:12.5px;white-space:nowrap;overflow:hidden;font-family:var(--mono)}.grid-cell.rowhead{flex-basis:44px;width:44px;background:var(--surface-2);color:var(--text-muted);text-align:right}.grid-cell.changed-old{background:var(--highlight-old)}.grid-cell.changed-new{background:var(--highlight-new)}.grid-cell.ambiguous{background:var(--highlight-ambiguous)}.grid-cell.focus{outline:2px solid var(--primary);outline-offset:-2px}.coverage-cols{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media (max-width: 800px){.coverage-cols{grid-template-columns:1fr}}ul{margin:6px 0;padding-left:20px}li{overflow-wrap:anywhere}.warning-box{background:var(--warning-bg);border:1px solid var(--warning-border);border-radius:var(--radius-box);padding:10px 14px;margin-bottom:12px}table.map-table{border-collapse:collapse;width:100%}table.map-table th,table.map-table td{border-bottom:1px solid var(--border);padding:8px 10px;text-align:left;overflow-wrap:anywhere}.app-footer{padding:14px 20px;color:var(--text-muted);border-top:1px solid var(--border);text-align:center}.busy-banner{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-box);padding:10px 14px;margin-bottom:12px}.spinner{width:14px;height:14px;flex:0 0 auto;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.error-banner{background:var(--highlight-old);border:1px solid var(--danger);color:var(--text);border-radius:var(--radius-box);padding:10px 14px;margin-bottom:12px}