:root {
  color-scheme: light;
  --bg: #f7f8fa;
  --surface: #ffffff;
  --fg: #1a1f2e;
  --muted: #5c6578;
  --border: #e2e6ed;
  --border-strong: #cfd6e0;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  --demo: #6b7280;
  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: 1.65;
  min-height: 100vh;
}
.site-header, main, footer { width: min(960px, 92vw); margin: 0 auto; }
.site-header { padding: 2.75rem 0 1.25rem; }
.badge {
  display: inline-block;
  margin: 0 0 0.65rem;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface);
  font-size: 0.82rem;
  font-weight: 600;
}
h1 { margin: 0 0 0.65rem; font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 700; letter-spacing: -0.02em; }
.lede { margin: 0; color: var(--muted); max-width: 42rem; font-size: 0.95rem; }
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.35rem 1.5rem;
  margin: 1rem 0;
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.04);
}
.panel.muted { background: #fafbfc; }
.panel h2 { margin: 0 0 0.85rem; font-size: 1.05rem; font-weight: 650; }
.disclaimer-panel { background: var(--accent-soft); border-color: #bfdbfe; }
.disclaimer-text {
  margin: 0;
  font-size: 0.9rem;
  color: #374151;
  line-height: 1.7;
}
.case-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.85rem; }
.case-list a {
  display: block;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--fg);
  text-decoration: none;
  background: var(--surface);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.case-list a:hover {
  border-color: var(--border-strong);
  box-shadow: 0 2px 8px rgba(16, 24, 40, 0.06);
}
.card-badge {
  display: inline-block;
  margin-bottom: 0.4rem;
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  border: 1px solid var(--border-strong);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
  background: var(--bg);
}
.case-list strong { display: block; margin-bottom: 0.3rem; font-size: 1.02rem; }
.card-desc { display: block; font-size: 0.88rem; color: var(--muted); line-height: 1.5; }
footer { padding: 2rem 0 3rem; color: var(--muted); font-size: 0.88rem; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
  background: var(--bg);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}