:root {
  --bill-ink: #26352a;
  --bill-olive: #586d3f;
  --bill-lime: #d8e7a8;
  --bill-paper: #f6f7f1;
  --bill-card: #fffefa;
  --bill-muted: #667064;
  --bill-line: #dfe5d8;
  --bill-warning: #fff4d8;
}

.billing-shell[hidden], .premium-gate-note[hidden], [data-premium-feature][hidden], .zip-save-link[hidden] { display: none !important; }
.billing-shell { width: min(100% - 36px, 1040px); margin: 0 auto; padding: 18px 0 calc(44px + env(safe-area-inset-bottom)); color: var(--bill-ink); }
.billing-topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 4px 0 20px; border-bottom: 1px solid var(--bill-line); }
.billing-topbar .brand { color: var(--bill-ink); text-decoration: none; }
.billing-topbar-note { color: var(--bill-muted); font-size: 12px; }
.billing-back-link { display: inline-block; margin: 20px 0 8px; color: var(--bill-olive); font-size: 13px; font-weight: 700; text-decoration: none; }
.billing-hero { max-width: 700px; padding: 22px 0 12px; }
.billing-eyebrow { margin: 0 0 10px; color: var(--bill-olive); font-size: 10px; font-weight: 800; letter-spacing: .14em; }
.billing-hero h1 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(34px, 7vw, 58px); font-weight: 500; line-height: 1.04; letter-spacing: -.035em; }
.billing-hero > p:last-child { max-width: 590px; margin: 14px 0 0; color: var(--bill-muted); font-size: 15px; line-height: 1.65; }
.billing-banner, .billing-return-message { margin: 18px 0; padding: 13px 15px; border: 1px solid var(--bill-line); border-radius: 13px; background: #eef3e4; color: var(--bill-ink); font-size: 13px; line-height: 1.55; }
.billing-banner[data-mode="test"] { background: var(--bill-warning); border-color: #edcf83; }
.billing-banner[data-mode="live"] { background: #e7f2e1; border-color: #c8ddbb; }
.billing-return-message { background: #f0f2ec; }
.billing-return-message:empty { display: none; }
.billing-account-card, .billing-subscription-card { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin: 16px 0 22px; padding: 18px; border: 1px solid var(--bill-line); border-radius: 16px; background: var(--bill-card); }
.billing-account-card h2, .billing-subscription-card h2 { margin: 0 0 5px; font-size: 15px; }
.billing-account-card p, .billing-subscription-card p { max-width: 600px; margin: 0; color: var(--bill-muted); font-size: 12px; line-height: 1.55; }
.account-identity { margin-top: 6px !important; color: var(--bill-olive) !important; font-weight: 700; }
.billing-account-actions { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 8px; }
.billing-primary-button, .billing-secondary-button, .billing-text-button { min-height: 44px; padding: 0 15px; border-radius: 11px; font: inherit; font-size: 12px; font-weight: 800; cursor: pointer; }
.billing-primary-button { width: 100%; margin-top: auto; border: 1px solid var(--bill-ink); background: var(--bill-ink); color: var(--bill-lime); }
.billing-primary-button:disabled { opacity: .55; cursor: not-allowed; }
.billing-secondary-button { border: 1px solid var(--bill-ink); background: var(--bill-ink); color: var(--bill-lime); }
.billing-text-button { border: 1px solid transparent; background: transparent; color: var(--bill-olive); }
.billing-primary-button:focus-visible, .billing-secondary-button:focus-visible, .billing-text-button:focus-visible, .billing-back-link:focus-visible, .topbar-premium-link:focus-visible, .billing-footer a:focus-visible { outline: 3px solid #9bb560; outline-offset: 3px; }
.billing-plans { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 22px 0 12px; }
.billing-plan-card { display: flex; flex-direction: column; min-width: 0; padding: clamp(18px, 4vw, 26px); border: 1px solid var(--bill-line); border-radius: 18px; background: var(--bill-card); }
.billing-plan-featured { border-color: #a9bb7d; box-shadow: inset 0 0 0 1px #a9bb7d; background: linear-gradient(145deg, #fbfdf4, #f0f4e7); }
.billing-plan-heading span { color: var(--bill-olive); font-size: 9px; font-weight: 800; letter-spacing: .12em; }
.billing-plan-heading h2 { margin: 9px 0 4px; font-family: Georgia, "Times New Roman", serif; font-size: 22px; font-weight: 500; }
.billing-price { margin: 12px 0 6px; font-family: Georgia, "Times New Roman", serif; font-size: 35px; font-weight: 700; letter-spacing: -.03em; }
.billing-price small { margin-left: 5px; color: var(--bill-muted); font-family: inherit; font-size: 14px; font-weight: 400; letter-spacing: 0; }
.billing-plan-copy { min-height: 42px; margin: 0 0 18px; color: var(--bill-muted); font-size: 12px; line-height: 1.55; }
.billing-free-note { margin: 14px 0 25px; color: var(--bill-muted); font-size: 12px; line-height: 1.6; }
.billing-free-note strong { color: var(--bill-ink); }
.billing-benefits { display: grid; grid-template-columns: minmax(180px, .65fr) 1fr; gap: 12px 28px; padding: 22px; border-radius: 17px; background: #ecefe5; }
.billing-benefits h2 { grid-column: 1 / -1; margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: 22px; font-weight: 500; }
.billing-benefits ul { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; font-size: 12px; line-height: 1.45; }
.billing-benefits li::before { content: "✓"; margin-right: 8px; color: var(--bill-olive); font-weight: 900; }
.billing-benefits p { margin: 0; color: var(--bill-muted); font-size: 11px; line-height: 1.6; }
.billing-subscription-card { margin: 18px 0; }
.billing-history { margin-top: 30px; }
.billing-history-heading { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 12px; }
.billing-history-heading h2 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: 26px; font-weight: 500; }
.billing-history-heading > p { max-width: 420px; margin: 0; color: var(--bill-muted); font-size: 11px; line-height: 1.5; }
.payment-history-list { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.payment-history-item { display: grid; grid-template-columns: 1fr auto; gap: 5px 12px; padding: 13px 15px; border: 1px solid var(--bill-line); border-radius: 12px; background: var(--bill-card); font-size: 12px; }
.payment-history-item strong { color: var(--bill-ink); }
.payment-history-item span { color: var(--bill-muted); }
.payment-history-item a { grid-column: 1 / -1; width: fit-content; color: var(--bill-olive); font-size: 11px; font-weight: 700; }
.billing-privacy-note { margin: 22px 0; color: var(--bill-muted); font-size: 10px; line-height: 1.6; }
.billing-footer { display: flex; justify-content: space-between; gap: 12px; padding-top: 14px; border-top: 1px solid var(--bill-line); color: var(--bill-muted); font-size: 10px; }
.billing-footer a { color: var(--bill-ink); font-weight: 800; text-decoration: none; }
.topbar-premium-link { display: inline-flex; align-items: center; min-height: 36px; padding: 0 12px; border: 1px solid var(--bill-line); border-radius: 999px; color: var(--bill-olive); background: #fffefa; font-size: 11px; font-weight: 800; text-decoration: none; white-space: nowrap; }
.premium-gate-note { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 18px; padding: 11px 14px; border: 1px solid var(--bill-line); border-radius: 12px; background: #eef3e4; color: var(--bill-ink); font-size: 11px; line-height: 1.5; }
.premium-gate-note a { color: var(--bill-olive); font-weight: 800; white-space: nowrap; }

@media (max-width: 640px) {
  .billing-shell { width: min(100% - 28px, 540px); padding-top: 12px; }
  .billing-topbar { padding-bottom: 14px; }
  .billing-topbar-note { font-size: 10px; }
  .billing-plans { grid-template-columns: 1fr; }
  .billing-account-card, .billing-subscription-card { align-items: stretch; flex-direction: column; padding: 15px; }
  .billing-account-actions { justify-content: stretch; }
  .billing-account-actions > button { flex: 1 1 auto; }
  .billing-benefits { grid-template-columns: 1fr; padding: 17px; }
  .billing-benefits h2 { grid-column: auto; }
  .billing-history-heading { align-items: flex-start; flex-direction: column; }
  .billing-history-heading > p { max-width: none; }
  .payment-history-item { grid-template-columns: 1fr; }
  .payment-history-item a { grid-column: auto; }
  .premium-gate-note { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  .billing-shell *, .premium-gate-note * { scroll-behavior: auto !important; }
}