:root {
  color-scheme: light;
  --bg: #0f172a;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --accent: #dc2626;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 42%, #f8fafc 42%);
  color: var(--text);
}
.cases-page { max-width: 920px; margin: 0 auto; padding: 24px 16px 48px; }
.cases-hero { color: #fff; padding: 12px 4px 28px; }
.cases-kicker { margin: 0 0 8px; font-size: 13px; opacity: .8; }
.cases-hero h1 { margin: 0 0 10px; font-size: clamp(1.6rem, 5vw, 2.2rem); }
.cases-lead { margin: 0; max-width: 36em; line-height: 1.6; opacity: .92; }
.cases-actions { margin: 18px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.cases-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
}
.cases-btn-ghost {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.28);
}
.cases-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.case-card {
  background: var(--card);
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 8px 24px rgba(15,23,42,.08);
}
.case-card h2 { margin: 0 0 8px; font-size: 1rem; }
.case-card p { margin: 0; color: var(--muted); font-size: .9rem; line-height: 1.55; }
.cases-metrics {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}
.metric {
  background: var(--card);
  border-radius: 12px;
  padding: 14px 10px;
  text-align: center;
  box-shadow: 0 4px 16px rgba(15,23,42,.06);
}
.metric strong { display: block; font-size: 1.35rem; color: var(--accent); }
.metric span { font-size: .78rem; color: var(--muted); }
.cases-foot { margin-top: 22px; text-align: center; color: var(--muted); font-size: .9rem; }
.cases-foot a { color: var(--accent); }
@media (max-width: 560px) {
  .cases-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}