:root {
  color-scheme: light;
  --ink: #13222f;
  --muted: #5b6770;
  --line: #d7dee2;
  --surface: #ffffff;
  --soft: #eef5f3;
  --teal: #0b7469;
  --coral: #e2644f;
  --shadow: 0 12px 28px rgba(19, 34, 47, 0.1);
}

* { box-sizing: border-box; }
body { margin: 0; background: #f4f7f7; color: var(--ink); font: 16px/1.5 Inter, "Segoe UI", Arial, sans-serif; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { border: 0; border-radius: 6px; background: var(--teal); color: #fff; cursor: pointer; font-weight: 700; padding: 10px 14px; }
button.secondary, .text-button { background: transparent; color: var(--teal); border: 1px solid var(--teal); }
button.text-button { border: 0; padding: 0; }
button:disabled { cursor: not-allowed; opacity: 0.55; }
.download-button { display: inline-flex; align-items: center; justify-content: center; width: fit-content; min-height: 42px; margin-top: 10px; border-radius: 6px; background: var(--teal); color: #fff; font-weight: 800; padding: 10px 16px; }

.site-shell, .checkout-shell { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.topbar { height: 68px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.topbar nav { display: flex; gap: 20px; align-items: center; color: var(--muted); font-size: 14px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: 0; }
.brand-mark { display: grid; place-items: center; width: 30px; height: 30px; background: var(--ink); color: #fff; font-size: 11px; }

.product-intro { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: 48px; padding: 70px 0 54px; align-items: center; }
.eyebrow { margin: 0 0 8px; color: var(--teal); font-size: 12px; font-weight: 800; text-transform: uppercase; letter-spacing: 0; }
h1, h2 { margin: 0; line-height: 1.12; letter-spacing: 0; }
h1 { font-size: 50px; }
h2 { font-size: 28px; }
.intro-text { max-width: 520px; color: var(--muted); font-size: 19px; }
.trust-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.trust-list span { border-left: 3px solid var(--coral); padding: 4px 10px; background: var(--surface); font-size: 14px; }
.product-image { display: block; width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border: 1px solid var(--line); box-shadow: var(--shadow); }

.content-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; margin-bottom: 60px; }
.account-panel, .privacy-panel { padding: 28px; border: 1px solid var(--line); background: var(--surface); }
.section-heading { margin-bottom: 18px; }
.account-summary { padding: 12px; margin-bottom: 14px; background: var(--soft); color: var(--muted); }
.auth-form { display: grid; gap: 12px; }
.auth-form label { display: grid; gap: 5px; color: var(--muted); font-size: 14px; font-weight: 700; }
.auth-form input { border: 1px solid var(--line); border-radius: 4px; padding: 10px; color: var(--ink); background: #fff; }
.command-row { display: flex; flex-wrap: wrap; gap: 10px; }
.status-message { min-height: 24px; margin: 0; color: var(--coral); font-size: 14px; }
.privacy-panel p { color: var(--muted); }
.muted { font-size: 14px; }

.plans-section { padding: 0 0 72px; }
.plan-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.plan { display: flex; min-height: 304px; flex-direction: column; border: 1px solid var(--line); background: var(--surface); padding: 24px; }
.plan h3 { margin: 0; font-size: 20px; }
.plan-price { margin: 16px 0; font-size: 28px; font-weight: 800; }
.plan ul { flex: 1; margin: 0; padding-left: 18px; color: var(--muted); font-size: 14px; }
.plan button { margin-top: 18px; }

.checkout-shell { padding-top: 28px; }
.checkout-panel { width: min(560px, 100%); margin: 96px auto; padding: 32px; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); }

@media (max-width: 760px) {
  .site-shell, .checkout-shell { width: min(100% - 28px, 1180px); }
  .topbar nav { gap: 12px; }
  .product-intro, .content-grid, .plan-grid { grid-template-columns: 1fr; }
  .product-intro { gap: 28px; padding-top: 42px; }
  h1 { font-size: 38px; }
}