.purchase-shell {
  width: min(100%, 720px);
  min-height: 100vh;
  min-height: 100svh;
  margin: 0 auto;
  padding: 24px var(--container-gutter);
  display: flex;
  flex-direction: column;
}
.purchase-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  color: var(--brand-green);
  font-size: 14px;
}
.purchase-header a { padding: 12px 0; }
.purchase-header a:hover { text-decoration: underline; }
.purchase-main { padding: clamp(48px, 10vh, 96px) 0; }
.purchase-eyebrow {
  color: var(--brand-green);
  font-size: 14px;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}
.purchase-main h1 {
  font-size: clamp(32px, 7vw, 48px);
  line-height: 1.25;
  letter-spacing: -0.03em;
}
.purchase-intro { margin-top: 20px; }
.purchase-options { margin-top: 40px; border-top: 1px solid var(--seal-brown); }
.purchase-option {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 24px 16px;
  border-bottom: 1px solid var(--seal-brown);
  transition: background-color 160ms ease;
}
.purchase-option:hover, .purchase-option:focus-visible { background: var(--paper-card); }
.purchase-option strong { font-size: 22px; color: var(--brand-green); }
.purchase-detail { display: block; margin-top: 4px; font-size: 14px; }
.purchase-arrow { font-size: 28px; color: var(--brand-green); }
.purchase-note { margin-top: 20px; font-size: 13px; color: var(--seal-brown); }
.purchase-footer { margin-top: auto; padding: 16px 0; font-size: 14px; color: var(--seal-brown); }
.purchase-follow-list {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 24px;
}
.purchase-qr { margin: 0; width: 160px; max-width: 100%; }
.purchase-qr img { width: 100%; height: auto; }
.purchase-qr figcaption { margin-top: 12px; }
.purchase-qr strong, .purchase-qr span { display: block; }
.purchase-qr strong { color: var(--brand-green); }
.purchase-qr span { font-size: 12px; }
.purchase-tagline { margin-top: 40px; }
@media (max-width: 400px) {
  .purchase-follow-list { gap: 16px; }
  .purchase-qr { width: calc((100% - 16px) / 2); }
}