/* 红铜工坊 — 深褐墨 + 红铜色 */
.theme-copper {
  --bg: #120e0c;
  --bg-elev: #1e1612;
  --bg-soft: #2a2018;
  --ink: #fff0e6;
  --muted: #b09080;
  --line: rgba(200,120,72, 0.12);
  --line-strong: rgba(200,120,72, 0.22);
  --accent: #c87848;
  --accent-2: #e8a878;
  --accent-ink: #241408;
  --font-display: "Russo One", sans-serif;
  --font-body: "Rubik", system-ui, sans-serif;
}
.theme-copper .page-atmosphere {
  background:
    radial-gradient(780px 420px at 12% 0%, rgba(200,120,72,0.18), transparent 55%),
    radial-gradient(640px 360px at 92% 18%, rgba(200,120,72,0.1), transparent 50%),
    #120e0c;
}
.theme-copper .masthead-brand {
  background: linear-gradient(100deg, #fff0e6, #e8a878 55%, #c87848);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.theme-copper .btn-primary,
.theme-copper .link-vip {
  background: linear-gradient(135deg, #e8a878, #c87848);
  color: #241408;
}
.theme-copper .section-kicker { color: #e8a878; }
.theme-copper .badge.paid { background: #c87848; color: #241408; }