:root{
  --bg:#ffffff;
  --card:#ffffff;
  --ink:#111827;
  --muted:#6b7280;
  --accent:#6557A2;
  --grid:rgba(17,24,39,.12);
  --ink-soft:#374151;
  --ok:#059669;
  --warn:#d97706;
  --err:#dc2626;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font:14px/1.45 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
header,footer{max-width:1680px;margin:20px auto;padding:0 16px}
header h1{margin:0 0 8px;font-size:28px;color:var(--accent)}
header p{margin:0;color:var(--ink-soft)}
main{max-width:1680px;margin:16px auto 48px;padding:0 16px;display:grid;gap:16px;grid-template-columns:minmax(700px,1.2fr) 1fr;align-items:start}
@media (max-width: 1040px){main{grid-template-columns:1fr}}
.full-width{max-width:1680px;margin:-32px auto 48px;padding:0 16px}
.card{background:var(--card);border:1px solid var(--grid);border-radius:16px;padding:14px;box-shadow:0 8px 24px rgba(0,0,0,.06);position:relative}
.card::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;border-top-left-radius:16px;border-top-right-radius:16px;background:var(--accent);opacity:.85}
.card-data{background:#f8f7ff}
.card-result{background:#f9fff8}
h2{margin:0 0 12px;font-size:20px}
.grid2,.grid3,.grid4{display:grid;gap:10px}
.grid2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.grid2,.grid3,.grid4{grid-template-columns:1fr}}
label{display:block;font-size:12px;color:var(--ink-soft)}
input[type="number"],input[type="text"],input[type="datetime-local"],select{width:100%;margin-top:4px;background:#fff;color:var(--ink);border:1px solid var(--grid);border-radius:10px;padding:7px 9px;font:inherit}
button{background:#fff;color:var(--ink);border:1px solid var(--grid);border-radius:9px;padding:5px 9px;font:600 12px/1.2 inherit;cursor:pointer;transition:border-color .15s,box-shadow .15s,transform .02s}
button:hover{border-color:var(--accent);box-shadow:0 0 0 3px rgba(101,87,162,.16)}
button:active{transform:translateY(.5px)}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}
.btn-outline{background:#fff;color:var(--accent);border-color:var(--accent)}
.icon-btn{padding:4px 7px;min-width:28px}
.icon-btn.danger{color:#991b1b;border-color:#fecaca}
.note{font-size:12px;color:var(--muted);margin-top:6px}
.error{display:none;background:#fef2f2;border:1px solid #fecaca;color:#991b1b;padding:8px 10px;border-radius:10px;margin-top:10px}
.table-wrap{overflow:auto;border:1px solid var(--grid);border-radius:12px;background:#fff}
table.compact{width:100%;border-collapse:collapse}
table.compact th,table.compact td{padding:6px 7px;border-bottom:1px solid var(--grid);vertical-align:middle}
table.compact th{text-align:left;font-size:12px;color:var(--ink-soft);background:#fafafa;position:sticky;top:0}
table.compact td input{margin:0}
table.compact th,table.compact td{border-left:none !important;border-right:none !important}
table.compact thead th{font-size:11px}
table.compact tbody td{padding:5px 6px}
table.compact tbody input,table.compact tbody select{font-size:12px;padding:5px 7px;border-left:none;border-right:none;box-shadow:none;margin:0}
.actions{display:flex;justify-content:flex-end;gap:8px;margin-top:8px;flex-wrap:wrap}
.summary-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin:8px 0 12px}
.metric{border:1px solid var(--grid);border-radius:12px;padding:10px;background:#fff}
.metric .k{font-size:12px;color:var(--muted)}
.metric .v{font-size:24px;font-weight:700;margin-top:4px}
.scenario-block{margin-top:10px;border:1px solid var(--grid);border-radius:12px;background:#fff;overflow:hidden}
.scenario-head{display:flex;justify-content:space-between;gap:10px;align-items:center;padding:10px 12px;background:#fcfcfc;border-bottom:1px solid var(--grid)}
.badge{display:inline-block;background:#eef2ff;color:var(--accent);border:1px solid rgba(101,87,162,.18);border-radius:999px;padding:3px 8px;font-size:12px;font-weight:700}
details.panel{border-top:1px solid var(--grid)}
details.panel[open]{background:#fcfffd}
details.panel > summary, .card details > summary{list-style:none;cursor:pointer;padding:10px 12px;font-weight:600;display:flex;align-items:center;gap:8px}
details.panel > summary::-webkit-details-marker, .card details > summary::-webkit-details-marker{display:none}
details.panel > summary::before, .card details > summary::before{content:"▶";font-size:11px;line-height:1;display:inline-block;transform:translateY(0)}
details.panel[open] > summary::before, .card details[open] > summary::before{content:"▼"}
.panel-body{padding:0 12px 12px}
.kv{display:grid;grid-template-columns:minmax(180px,260px) 1fr;gap:6px 12px;font-size:13px}
.kv div{padding:4px 0;border-bottom:1px dashed rgba(17,24,39,.09)}
.muted{color:var(--muted)}
.footer-actions{display:flex;gap:8px;justify-content:flex-end;flex-wrap:wrap;margin-top:12px}
input[type=number]::-webkit-outer-spin-button,input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
input[type=number]{-moz-appearance:textfield}

/* Scenario table column sizing */
table.compact th:nth-child(1), table.compact td:nth-child(1){min-width:110px;width:11%;}
table.compact th:nth-child(2), table.compact td:nth-child(2){min-width:100px;width:10%;}
table.compact th:nth-child(3), table.compact td:nth-child(3){min-width:80px;width:8%;}
table.compact th:nth-child(4), table.compact td:nth-child(4){min-width:75px;width:7%;}
table.compact th:nth-child(5), table.compact td:nth-child(5){min-width:75px;width:7%;}
table.compact th:nth-child(6), table.compact td:nth-child(6){min-width:75px;width:7%;}
table.compact th:nth-child(7), table.compact td:nth-child(7){min-width:100px;width:9%;}

.hint{font-size:12px;color:#64748b;margin:8px 0 0 0;}