:root {
  color-scheme: light;
  --board-wall: #eee3d1;
  --board-paper: #f8f0e1;
  --board-ivory: #fff9ed;
  --board-ink: #681222;
  --board-wine: #76172b;
  --board-wine-deep: #4c0c18;
  --board-muted: #8d7254;
  --board-gold: #b48b4d;
  --board-gold-light: #f9e2a3;
  --board-gold-deep: #806039;
  --board-line: #d7bd8c;
  --board-shadow: #6e482e3b;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  background: var(--board-wall);
  color: var(--board-ink);
  font-family: "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.gold-price-board {
  display: flex;
  align-items: center;
  min-height: 100vh;
  padding: clamp(20px, 4vh, 60px) 24px;
  background:
    radial-gradient(ellipse at 50% 28%, #fff7dfb3, transparent 70%),
    repeating-linear-gradient(116deg, transparent 0 27px, #a27e4b05 29px 30px, transparent 33px 84px),
    var(--board-wall);
}

.board-shell {
  position: relative;
  isolation: isolate;
  width: min(920px, 100%);
  margin: 0 auto;
  padding: clamp(24px, 4vw, 46px);
  border: 3px solid var(--board-gold);
  border-radius: 26px;
  background:
    repeating-linear-gradient(157deg, transparent 0 18px, #ad8e5810 19px, transparent 20px 60px),
    radial-gradient(ellipse at 25% 14%, var(--board-ivory), transparent 75%),
    var(--board-paper);
  box-shadow:
    inset 0 0 0 2px var(--board-gold-light),
    inset 0 0 0 5px var(--board-gold-deep),
    inset 0 0 0 7px var(--board-ivory),
    0 0 32px 10px #ffe7a55c,
    0 13px 0 -5px var(--board-gold-deep),
    0 28px 40px -12px var(--board-shadow);
}

.brand-mark { display: grid; grid-template-columns: clamp(110px, 18vw, 160px) minmax(0, 1fr) clamp(110px, 18vw, 160px); align-items: center; gap: 20px; }
.brand-logo {
  width: 100%;
  padding: 0;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid var(--board-gold);
  background: var(--board-ivory);
  box-shadow: inset 0 0 0 2px var(--board-paper), 0 4px 8px #8060391a;
}
.brand-logo img { display: block; width: 100%; height: auto; }
/* Show the QR region while keeping the original image intact. */
.qr-block { display: flex; flex-direction: column; align-items: center; justify-self: center; gap: 8px; }
.qr-code { position: relative; display: block; width: 128px; aspect-ratio: 1; overflow: hidden; background: #fff; border: 1px solid var(--board-line); }
.qr-block img { position: absolute; width: 129.58%; max-width: none; height: auto; left: -15.43%; top: -48.87%; }
.qr-code:focus-visible { outline: 3px solid var(--board-wine); outline-offset: 4px; }
.qr-block span { font-size: 14px; letter-spacing: .12em; }
.board-rule { height: 1px; margin: 24px 0 10px; background: linear-gradient(90deg, var(--board-gold-deep), var(--board-gold-light), var(--board-gold-deep)); }
.board-heading { min-width: 0; }
h1 {
  margin: 0;
  text-align: center;
  font-family: "STSong", "SimSun", "Songti SC", serif;
  font-size: clamp(32px, 5.7vw, 62px);
  font-weight: 600;
  letter-spacing: .16em;
  text-indent: .16em;
  text-shadow: 0 2px 0 var(--board-ivory), 0 4px 3px #80603926;
  white-space: nowrap;
}
.title-rule { width: 76px; height: 2px; margin: 14px auto 0; background: linear-gradient(90deg, transparent, var(--board-gold), transparent); }
.table-wrap { width: 100%; }
.gold-price-table { width: 100%; border-collapse: separate; border-spacing: 0 14px; table-layout: fixed; }
.gold-price-table th, .gold-price-table td { text-align: center; }
.gold-price-table thead th { padding: 3px 8px 0; color: var(--board-muted); font-size: 15px; font-weight: 500; letter-spacing: .12em; }
.gold-price-table thead th:first-child { width: 26%; }
.gold-price-table tbody th, .gold-price-table tbody td { border-top: 2px solid var(--board-gold); border-bottom: 2px solid var(--board-gold); box-shadow: inset 0 1px 0 var(--board-gold-light), inset 0 -1px 0 var(--board-gold-light), 0 5px 6px #8060391c; }
.gold-price-table tbody th {
  padding: 22px 8px;
  border-left: 2px solid var(--board-gold);
  border-radius: 10px 0 0 10px;
  color: var(--board-gold-light);
  background: linear-gradient(115deg, var(--board-wine), var(--board-wine-deep));
  font-family: "STSong", "SimSun", "Songti SC", serif;
  font-size: clamp(19px, 3vw, 31px);
  font-weight: 500;
  white-space: nowrap;
}
.gold-price-table tbody td {
  padding: 12px 14px;
  border-left: 1px solid var(--board-line);
  background: linear-gradient(110deg, var(--board-ivory), var(--board-paper));
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(32px, 5.6vw, 61px);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  line-height: 1;
}
.gold-price-table tbody td:last-child { border-right: 2px solid var(--board-gold); border-radius: 0 10px 10px 0; }
.price-digits { display: grid; grid-template-columns: repeat(var(--digit-count, 4), minmax(0, 1fr)); }
.price-digit { display: block; border-left: 1px solid #d7bd8c70; padding: 3px 0; }
.price-digit:first-child { border-left: 0; }
.gold-price-table small { display: block; margin-top: 9px; color: var(--board-muted); font-family: "Microsoft YaHei", sans-serif; font-size: 12px; font-weight: 400; }
.gold-price-table .category-fee { color: var(--board-gold-light); opacity: .85; letter-spacing: .08em; }
.board-footer { display: flex; flex-direction: column; align-items: center; gap: 9px; margin-top: 10px; padding-top: 22px; border-top: 1px solid var(--board-line); text-align: center; }
.board-notice p { margin: 0 0 8px; font-size: 14px; text-wrap: pretty; }
.board-notice small { color: var(--board-muted); font-size: 12px; }
.board-update { margin: 0; color: var(--board-muted); font-size: 13px; }
.board-status { min-height: 16px; margin: 0; color: var(--board-muted); font-size: 12px; }
.board-status.is-error { color: var(--board-wine); }

@media (max-width: 640px) {
  .gold-price-board { padding: 18px 10px 28px; }
  .board-shell { padding: 23px 12px 20px; border-radius: 20px; }
  .brand-mark { grid-template-columns: clamp(72px, 20vw, 110px) minmax(0, 1fr) clamp(72px, 20vw, 110px); gap: 8px; }
  .brand-logo { width: 100%; }
  .qr-code { width: clamp(72px, 20vw, 100px); }
  .qr-block { gap: 5px; }
  .qr-block span { font-size: 11px; }
  .board-rule { margin: 18px 0 6px; }
  h1 { font-size: clamp(20px, 4.7vw, 32px); letter-spacing: .06em; text-indent: .06em; }
  .title-rule { width: 44px; margin: 10px auto 0; }
  .gold-price-table { border-spacing: 0 12px; }
  .gold-price-table thead th { font-size: 11px; letter-spacing: .04em; }
  .gold-price-table thead th:first-child { width: 28%; }
  .gold-price-table tbody th { padding: 18px 3px; font-size: clamp(13px, 3.8vw, 23px); }
  .gold-price-table tbody td { padding: 11px 4px; font-size: clamp(25px, 7.8vw, 46px); }
  .gold-price-table small { margin-top: 7px; font-size: 10px; }
  .board-footer { flex-direction: column; padding-top: 18px; gap: 7px; }
  .board-notice p { font-size: 11px; }
  .board-notice small, .board-update, .board-status { font-size: 10px; }
}

@media (min-width: 1000px) and (min-aspect-ratio: 4/3) {
  .gold-price-board { padding: 20px 28px 30px; }
  .board-shell { width: min(1200px, 100%); padding: 22px 32px; }
  .brand-logo { width: 128px; }
  .qr-code { width: 88px; }
  .qr-block { gap: 4px; }
  .qr-block span { font-size: 12px; }
  .board-rule { margin: 16px 0 10px; }
  h1 { font-size: 50px; }
  .title-rule { margin: 10px auto 0; }
  .gold-price-table { border-spacing: 0 10px; }
  .gold-price-table tbody th { padding: 12px 8px; font-size: 26px; }
  .gold-price-table tbody td { padding: 7px 16px; font-size: 46px; }
  .gold-price-table small { margin-top: 5px; }
  .board-footer { margin-top: 5px; padding-top: 12px; gap: 5px; }
  .board-notice p { margin-bottom: 4px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}