:root {
  color-scheme: light;
  --paper: #f3efe8;
  --card: rgba(255, 253, 249, 0.88);
  --ink: #292723;
  --muted: #777168;
  --line: rgba(41, 39, 35, 0.11);
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 18% 8%, rgba(255,255,255,.95), transparent 34%),
    radial-gradient(circle at 82% 84%, rgba(214,205,192,.6), transparent 38%),
    var(--paper);
  color: var(--ink);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.page {
  min-height: 100svh;
  padding: max(28px, env(safe-area-inset-top)) 20px max(22px, env(safe-area-inset-bottom));
  display: grid;
  grid-template-rows: 1fr auto;
  gap: 24px;
  align-items: center;
}

.card {
  width: min(100%, 430px);
  margin: auto;
  padding: 42px 26px 30px;
  text-align: center;
  background: var(--card);
  border: 1px solid rgba(255,255,255,.8);
  border-radius: 30px;
  box-shadow: 0 28px 70px rgba(54, 47, 38, .12);
  backdrop-filter: blur(14px);
}

.eyebrow {
  margin-bottom: 16px;
  color: var(--muted);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 11px;
  letter-spacing: .28em;
}

h1 {
  margin: 0;
  font-family: "Songti SC", SimSun, serif;
  font-size: clamp(29px, 8vw, 38px);
  font-weight: 500;
  letter-spacing: .12em;
}

.subtitle {
  margin: 13px 0 27px;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: .06em;
}

.qr-shell {
  width: min(100%, 320px);
  aspect-ratio: 1;
  margin: 0 auto;
  padding: 13px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  box-shadow: 0 14px 36px rgba(34, 31, 27, .09);
  overflow: hidden;
}

.qr-shell img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 13px;
  -webkit-touch-callout: default;
  user-select: auto;
}

.device-tip {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .05em;
}

.secondary-action {
  margin-top: 16px;
  padding: 10px 16px;
  border: 0;
  border-bottom: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

footer {
  text-align: center;
  color: rgba(41, 39, 35, .45);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 9px;
  letter-spacing: .22em;
}

@media (max-height: 700px) {
  .page { padding-top: 18px; }
  .card { padding-top: 28px; }
  .qr-shell { width: min(100%, 270px); }
}

@media (prefers-reduced-motion: no-preference) {
  .card { animation: enter .55s ease-out both; }
  @keyframes enter {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
  }
}