:root {
  color-scheme: light;
  --bg: #f7f8fa;
  --surface: #ffffff;
  --fg: #1a1f2e;
  --muted: #5c6578;
  --border: #e2e6ed;
  --border-strong: #cfd6e0;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  --ok: #047857;
  --ok-bg: #ecfdf5;
  --warn: #b45309;
  --warn-bg: #fffbeb;
  --bad: #b91c1c;
  --bad-bg: #fef2f2;
  --demo: #6b7280;
  --stage-lead: #f3f4f6;
  --stage-proposal: #eff6ff;
  --stage-negotiation: #fef3c7;
  --stage-won: #ecfdf5;
  font-family: "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.55;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.case-wrap { width: min(1140px, 94vw); margin: 0 auto; padding: 1.5rem 0 3.5rem; }
.case-top {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}
.case-top h1 { margin: 0; font-size: clamp(1.2rem, 2.5vw, 1.55rem); font-weight: 700; }
.badge-demo {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
  border: 1px solid var(--border-strong);
  color: var(--muted);
  background: var(--bg);
  font-size: 0.75rem;
  font-weight: 600;
}
.disclaimer {
  font-size: 0.82rem;
  color: var(--muted);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  padding: 0.65rem 0.9rem;
  margin: 0 0 1.25rem;
  background: var(--surface);
  border-radius: 8px;
  line-height: 1.6;
}
.back-link { font-size: 0.88rem; color: var(--muted); text-decoration: none; display: inline-block; margin-bottom: 1rem; }
.back-link:hover { color: var(--accent); }
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.15rem 1.25rem;
  margin-bottom: 1.1rem;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}
.panel h2 { margin: 0 0 0.75rem; font-size: 1rem; font-weight: 650; }
.panel h3 { margin: 0 0 0.5rem; font-size: 0.92rem; font-weight: 600; }
.toolbar { display: flex; flex-wrap: wrap; gap: 0.55rem; align-items: center; margin-bottom: 0.75rem; }
label { font-size: 0.88rem; color: var(--muted); }
select, input, textarea, button {
  font: inherit;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--fg);
  padding: 0.45rem 0.7rem;
}
textarea { width: 100%; resize: vertical; }
button {
  cursor: pointer;
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.88rem;
}
button:hover { filter: brightness(1.05); }
button.secondary { background: var(--surface); border-color: var(--border-strong); color: var(--fg); font-weight: 500; }
button.danger { background: var(--surface); border-color: #fca5a5; color: var(--bad); }
button:disabled { opacity: 0.45; cursor: not-allowed; }
table { width: 100%; border-collapse: collapse; font-size: 0.88rem; }
th, td { border-bottom: 1px solid var(--border); padding: 0.55rem 0.5rem; text-align: left; vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; background: #fafbfc; }
tr:last-child td { border-bottom: none; }
.grid-2 { display: grid; gap: 1.1rem; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.kanban { display: grid; gap: 0.85rem; grid-template-columns: repeat(5, minmax(160px, 1fr)); overflow-x: auto; padding-bottom: 0.25rem; }
@media (max-width: 900px) { .kanban { grid-template-columns: repeat(5, minmax(200px, 1fr)); } }
.kanban-col {
  background: #fafbfc;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.65rem;
  min-height: 140px;
}
.kanban-col[data-stage="lead"] { background: var(--stage-lead); }
.kanban-col[data-stage="qualify"] { background: var(--stage-proposal); }
.kanban-col[data-stage="proposal"] { background: var(--stage-proposal); }
.kanban-col[data-stage="negotiation"] { background: var(--stage-negotiation); }
.kanban-col[data-stage="won"] { background: var(--stage-won); }
.kanban-col-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 0.5rem; gap: 0.25rem; }
.kanban-col h3 { margin: 0; font-size: 0.82rem; color: var(--fg); font-weight: 650; }
.kanban-meta { font-size: 0.72rem; color: var(--muted); }
.deal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.55rem 0.65rem;
  margin-bottom: 0.5rem;
  font-size: 0.84rem;
  box-shadow: 0 1px 1px rgba(16, 24, 40, 0.03);
}
.deal-card.stale { border-color: #fbbf24; background: var(--warn-bg); }
.stale-bar { height: 4px; border-radius: 2px; background: var(--border); margin-top: 0.35rem; overflow: hidden; }
.stale-bar span { display: block; height: 100%; background: #f59e0b; }
.tag {
  display: inline-block;
  font-size: 0.68rem;
  padding: 0.12rem 0.4rem;
  border-radius: 4px;
  background: var(--bg);
  border: 1px solid var(--border);
  margin-right: 0.2rem;
  font-weight: 600;
  color: var(--muted);
}
.tag.warn { background: var(--warn-bg); border-color: #fcd34d; color: var(--warn); }
.tag.ok { background: var(--ok-bg); border-color: #6ee7b7; color: var(--ok); }
.muted { color: var(--muted); }
.stat-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.stat {
  flex: 1 1 150px;
  background: #fafbfc;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem 0.85rem;
}
.stat strong { display: block; font-size: 1.2rem; margin-top: 0.15rem; color: var(--fg); }
.status-ok { color: var(--ok); }
.status-warn { color: var(--warn); }
.status-bad { color: var(--bad); }
.hidden { display: none !important; }
.tabs { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 1rem; }
.tab-btn {
  background: var(--surface);
  color: var(--muted);
  border: 1px solid var(--border);
  font-weight: 500;
}
.tab-btn.active { background: var(--accent-soft); color: var(--accent); border-color: #93c5fd; }
.activity-item {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.86rem;
}
.role-banner {
  padding: 0.5rem 0.75rem;
  background: var(--accent-soft);
  border: 1px solid #bfdbfe;
  border-radius: 8px;
  font-size: 0.85rem;
  color: #1e40af;
  flex: 1;
  min-width: 200px;
}
.article-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  margin-bottom: 0.75rem;
  background: var(--surface);
}
.article-card.locked { background: #fafbfc; }
.member-card {
  max-width: 280px;
  margin: 0 auto;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 1rem;
  background: linear-gradient(180deg, #fff 0%, #f9fafb 100%);
  text-align: center;
}
.qr-box {
  width: 128px; height: 128px;
  background:
    linear-gradient(90deg, #111 2px, transparent 1px) 0 0 / 8px 8px,
    linear-gradient(#111 2px, transparent 1px) 0 0 / 8px 8px,
    #fff;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  margin: 0.65rem auto;
}
.qr-id { font-family: ui-monospace, monospace; font-size: 0.75rem; letter-spacing: 0.05em; }
.nav-pills { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.nav-pills button { font-size: 0.85rem; }
.preview-teaser {
  padding: 0.75rem;
  border: 1px dashed var(--border-strong);
  border-radius: 8px;
  background: #fafbfc;
  margin-top: 0.75rem;
}
@media (max-width: 640px) {
  table { font-size: 0.8rem; }
  .kanban { grid-template-columns: repeat(5, minmax(180px, 1fr)); }
}