:root {
  color-scheme: light;
  --canvas: #f3f6f4;
  --surface: #fff;
  --ink: #171b19;
  --muted: #65706a;
  --line: #dce3df;
  --green: #148a5a;
  --green-soft: #e7f7ef;
  --coral: #d95d48;
  --dark: #151917;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; min-height: 100vh; color: var(--ink); background: var(--canvas); }
button, input { font: inherit; }
a { color: inherit; }
.checkout-header { height: 70px; padding: 0 max(24px, calc((100vw - 1180px) / 2)); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.9); }
.checkout-brand { color: inherit; text-decoration: none; display: flex; gap: 10px; align-items: center; }
.checkout-brand img { border: 1px solid var(--line); border-radius: 7px; }
.checkout-brand strong, .checkout-brand small { display: block; letter-spacing: 0; }
.checkout-brand strong { font-size: 15px; }
.checkout-brand small { color: var(--muted); font-size: 10px; }
.back-link { color: var(--muted); font-size: 12px; }
.checkout-main { max-width: 1180px; margin: 0 auto; padding: 72px 24px 90px; display: grid; grid-template-columns: minmax(0, .9fr) minmax(420px, .75fr); gap: 90px; align-items: start; }
.eyebrow { display: block; color: var(--green); text-transform: uppercase; font-size: 10px; font-weight: 750; margin-bottom: 12px; }
h1 { margin: 0 0 16px; max-width: 620px; font-size: clamp(38px, 5vw, 62px); line-height: 1.02; letter-spacing: 0; }
.checkout-copy > p { max-width: 600px; margin: 0 0 30px; color: var(--muted); line-height: 1.7; font-size: 15px; }
.network-line { display: flex; align-items: center; gap: 9px; min-height: 42px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.network-line > span { width: 8px; height: 8px; border-radius: 50%; background: #909a95; }
.network-line > span.live { background: var(--green); box-shadow: 0 0 0 4px var(--green-soft); }
.network-line strong { font-size: 12px; }
.network-line small { margin-left: auto; color: var(--muted); font-size: 10px; text-transform: uppercase; }
.checkout-facts { margin: 22px 0; display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.checkout-facts div { padding: 14px; background: var(--surface); }
.checkout-facts dt { color: var(--muted); font-size: 10px; margin-bottom: 4px; }
.checkout-facts dd { margin: 0; font-size: 12px; font-weight: 650; }
.privacy-warning { border-left: 3px solid var(--coral); padding: 4px 0 4px 13px; display: grid; gap: 3px; }
.privacy-warning strong { font-size: 11px; }
.privacy-warning span { color: var(--muted); font-size: 10px; }
.checkout-panel { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 24px; box-shadow: 0 18px 55px rgba(23,27,25,.08); }
.panel-heading { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 16px; }
.panel-heading span { color: var(--muted); font-size: 10px; text-transform: uppercase; }
.panel-heading strong { font-size: 15px; }
.checkout-plans { display: grid; gap: 8px; }
.checkout-plan { width: 100%; min-height: 62px; border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; background: #fff; display: grid; grid-template-columns: 1fr auto; align-items: center; text-align: left; cursor: pointer; }
.checkout-plan:hover { border-color: #9cb7aa; }
.checkout-plan.active { border-color: var(--green); box-shadow: inset 3px 0 var(--green); background: #fbfefc; }
.checkout-plan span, .checkout-plan small { display: block; }
.checkout-plan span { font-weight: 700; text-transform: capitalize; }
.checkout-plan small { color: var(--muted); font-size: 9px; margin-top: 2px; }
.checkout-plan strong { font-size: 14px; }
.wallet-row { margin: 18px 0; padding: 14px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.wallet-row span, .wallet-row strong { display: block; }
.wallet-row span { color: var(--muted); font-size: 10px; }
.wallet-row strong { margin-top: 3px; max-width: 210px; overflow: hidden; text-overflow: ellipsis; font-size: 11px; }
.primary-button, .secondary-button { border-radius: 6px; min-height: 40px; padding: 0 14px; display: inline-flex; align-items: center; justify-content: center; text-decoration: none; cursor: pointer; font-size: 11px; font-weight: 700; }
.primary-button { color: #fff; background: var(--dark); border: 1px solid var(--dark); }
.primary-button:disabled { cursor: not-allowed; opacity: .45; }
.secondary-button { color: var(--ink); background: #fff; border: 1px solid #cbd4cf; }
.full { width: 100%; }
.agreement { display: grid; grid-template-columns: 17px 1fr; gap: 9px; margin: 11px 0; color: #4d5752; font-size: 10px; line-height: 1.5; }
.agreement input { width: 15px; height: 15px; accent-color: var(--green); margin: 1px 0 0; }
.agreement a { color: var(--green); }
.total-row { display: flex; justify-content: space-between; align-items: baseline; margin: 20px 0 12px; }
.total-row span { color: var(--muted); font-size: 11px; }
.total-row strong { font-size: 14px; }
.total-row b { font-size: 24px; }
.status-message { min-height: 18px; margin: 10px 0 0; color: var(--muted); text-align: center; font-size: 10px; }
.status-message.error { color: #a94030; }
.checkout-state { border: 1px solid #e7d7af; background: #fff9eb; color: #69552b; border-radius: 6px; padding: 14px; font-size: 11px; line-height: 1.55; }
.key-delivery { text-align: center; }
.delivery-mark { display: inline-block; color: #087048; background: var(--green-soft); border-radius: 999px; padding: 4px 9px; font-size: 9px; font-weight: 750; text-transform: uppercase; }
.key-delivery h2 { margin: 15px 0 7px; font-size: 22px; }
.key-delivery > p { color: var(--muted); font-size: 11px; line-height: 1.6; }
.delivered-key { margin: 18px 0; padding: 11px; background: var(--dark); border-radius: 6px; display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 8px; align-items: center; text-align: left; }
.delivered-key code { color: #cde7da; font-size: 10px; overflow-wrap: anywhere; }
.delivered-key button { color: #fff; border: 1px solid #48524d; background: #282f2b; border-radius: 4px; padding: 6px 9px; font-size: 9px; cursor: pointer; }
.clear-recovery { margin-bottom: 8px; }
.checkout-footer { min-height: 58px; border-top: 1px solid var(--line); padding: 0 max(24px, calc((100vw - 1180px) / 2)); display: flex; align-items: center; gap: 20px; color: var(--muted); font-size: 9px; }
.checkout-footer span { margin-right: auto; }
@media (max-width: 900px) {
  .checkout-main { grid-template-columns: 1fr; gap: 42px; padding-top: 45px; }
  .checkout-copy { max-width: 680px; }
}
@media (max-width: 560px) {
  .checkout-header { padding: 0 14px; }
  .checkout-main { padding: 34px 14px 60px; }
  h1 { font-size: 38px; }
  .checkout-facts { grid-template-columns: 1fr; }
  .checkout-panel { padding: 17px; }
  .wallet-row { align-items: stretch; flex-direction: column; }
  .checkout-footer { padding: 15px; align-items: flex-start; flex-wrap: wrap; }
  .checkout-footer span { flex-basis: 100%; }
}