:root {
  --oxblood: #2a070a;
  --hall: #4b0c12;
  --lacquer: #7d121b;
  --gold: #d8a62e;
  --gilt: #f6d978;
  --ivory: #fff7e8;
  --parchment: #fffdf8;
  --ink: #261511;
  --muted: #6a4d3c;
  --jade: #176b57;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ivory);
  color: var(--ink);
  font-family: "Segoe UI", Calibri, sans-serif;
}
.display {
  font-family: Georgia, "Times New Roman", serif;
  letter-spacing: -0.025em;
}
.fu {
  position: relative;
}
.fu:before {
  content: "福";
  position: absolute;
  right: 3vw;
  top: 1.2rem;
  color: rgba(246, 217, 120, 0.07);
  font: 700 clamp(9rem, 22vw, 22rem) / 1 Georgia, serif;
  pointer-events: none;
}
.lattice {
  background-image:
    linear-gradient(45deg, transparent 46%, rgba(246, 217, 120, 0.08) 47%, rgba(246, 217, 120, 0.08) 53%, transparent 54%),
    linear-gradient(-45deg, transparent 46%, rgba(246, 217, 120, 0.08) 47%, rgba(246, 217, 120, 0.08) 53%, transparent 54%);
  background-size: 42px 42px;
}
.frame {
  border: 2px solid rgba(216, 166, 46, 0.7);
  box-shadow: 0 22px 48px rgba(42, 7, 10, 0.22);
}
.panel {
  border: 1px solid rgba(125, 18, 27, 0.18);
  box-shadow: 0 14px 32px rgba(74, 12, 18, 0.1);
}
.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.95rem 1.35rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.82rem;
}
img { display: block; max-width: 100%; }
details {
  background: var(--parchment);
  border: 1px solid rgba(125, 18, 27, 0.18);
  padding: 1.1rem 1.2rem;
  color: var(--ink);
  box-shadow: 0 10px 24px rgba(74, 12, 18, 0.08);
}
summary { cursor: pointer; font-weight: 800; }
@media (max-width: 767px) {
  .fu:before { top: 7rem; font-size: 11rem; }
}