:root {
  --bg: #f7f8fa;
  --card: #ffffff;
  --ink: #1f2430;
  --muted: #6b7280;
  --brand: #1f7a6d;
  --brand-d: #155e54;
  --line: #e3e6ea;
  --warn: #b45309;
}
* { box-sizing: border-box; }
body {
  margin: 0; padding: 0 16px 48px;
  font-family: system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Noto Sans JP", Meiryo, sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.7;
  max-width: 880px; margin: 0 auto;
}
header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 20px 0 4px; flex-wrap: wrap; }
h1 { font-size: 20px; margin: 0; }
h2 { font-size: 16px; margin: 0 0 8px; }
.tag { font-size: 11px; background: var(--brand); color: #fff; padding: 2px 8px; border-radius: 999px; vertical-align: middle; }
.lead { color: var(--muted); font-size: 14px; }
.hint { color: var(--muted); font-size: 13px; margin: 4px 0; }
.status { font-size: 12px; color: var(--muted); }
.status.ok { color: var(--brand); }
.status.ng { color: #b91c1c; }

.office, .panel { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 12px 0; }
label { display: block; font-size: 13px; font-weight: 600; margin: 10px 0 4px; }
textarea, input[type=text], input[type=number], select {
  width: 100%; font: inherit; padding: 8px 10px; border: 1px solid var(--line);
  border-radius: 8px; background: #fff; color: var(--ink);
}
textarea { resize: vertical; }

.tabs { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }
.tab { border: 1px solid var(--line); background: #fff; padding: 8px 14px; border-radius: 999px; cursor: pointer; font: inherit; }
.tab.active { background: var(--brand); color: #fff; border-color: var(--brand); }
.panel { display: none; }
.panel.active { display: block; }

button.primary { margin-top: 12px; background: var(--brand); color: #fff; border: 0; padding: 10px 18px; border-radius: 8px; cursor: pointer; font: inherit; font-weight: 600; }
button.primary:hover { background: var(--brand-d); }
button.primary:disabled { opacity: .6; cursor: progress; }
button.ghost { margin-top: 8px; background: #fff; color: var(--brand); border: 1px solid var(--brand); padding: 6px 12px; border-radius: 8px; cursor: pointer; font: inherit; }

.output { margin-top: 14px; }
.output:empty { display: none; }
.card-doc { background: #fbfcfd; border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.card-doc h2 { font-size: 15px; margin: 14px 0 6px; border-bottom: 1px solid var(--line); padding-bottom: 4px; }
.card-doc h3 { font-size: 14px; margin: 10px 0 4px; }
.card-doc ul { margin: 4px 0 4px 20px; }
.card-doc .req { color: var(--warn); font-weight: 600; }

.kasan { display: grid; gap: 10px; }
.kasan .item { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; background: #fbfcfd; }
.kasan .name { font-weight: 700; }
.kasan .conf { font-size: 11px; padding: 1px 8px; border-radius: 999px; margin-left: 8px; }
.conf-high { background: #dcfce7; color: #166534; }
.conf-medium { background: #fef9c3; color: #854d0e; }
.conf-low { background: #fee2e2; color: #991b1b; }
.kasan small { color: var(--muted); }
.risks { margin-top: 10px; border-left: 3px solid var(--warn); padding-left: 12px; }

.roi { width: 100%; border-collapse: collapse; margin: 8px 0; }
.roi th, .roi td { border: 1px solid var(--line); padding: 6px 8px; text-align: left; font-size: 14px; }
.roi input { width: 90px; }
.roi-inputs { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; margin-top: 8px; }
.roi-inputs label { font-weight: 600; }

.result-num { font-size: 28px; font-weight: 800; color: var(--brand); }
.kpi { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px,1fr)); gap: 12px; }
.kpi .box { background: #fbfcfd; border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
.kpi .box .label { font-size: 12px; color: var(--muted); }
.verdict { margin-top: 12px; padding: 12px 14px; border-radius: 10px; font-weight: 700; }
.verdict.go { background: #dcfce7; color: #166534; }
.verdict.mid { background: #fef9c3; color: #854d0e; }
.verdict.ng { background: #fee2e2; color: #991b1b; }

.err { color: #b91c1c; background: #fee2e2; border: 1px solid #fecaca; border-radius: 8px; padding: 10px 12px; }
.spin { color: var(--muted); }
footer { margin-top: 24px; color: var(--muted); }