:root {
    color-scheme: light;
    --ink: #10213c;
    --muted: #5d6d86;
    --blue: #245fec;
    --green: #0c9872;
    --paper: #ffffff;
    --canvas: #eef3fb;
    --rule: #d3ddeb;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--canvas);
    color: var(--ink);
    font: 16px/1.65 Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--blue); }

.shell { width: min(880px, calc(100% - 32px)); margin: 0 auto; }

header { padding: 30px 0 18px; }

.brand { display: flex; align-items: center; gap: 13px; color: var(--ink); font-weight: 800; text-decoration: none; }
.brand img { width: 48px; height: 48px; }

nav { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 22px; }
nav a { color: var(--muted); font-size: 14px; font-weight: 700; text-decoration: none; }
nav a:hover, nav a:focus-visible { color: var(--blue); }

main {
    margin-bottom: 36px;
    padding: clamp(24px, 5vw, 52px);
    border: 1px solid var(--rule);
    border-radius: 22px;
    background: var(--paper);
    box-shadow: 0 18px 48px rgba(32, 58, 100, 0.09);
}

.eyebrow { color: var(--green); font-size: 12px; font-weight: 900; letter-spacing: .12em; }
h1 { max-width: 720px; margin: 8px 0 14px; font-size: clamp(34px, 6vw, 58px); line-height: 1.04; letter-spacing: -.04em; }
h2 { margin: 34px 0 8px; font-size: 24px; line-height: 1.25; }
h3 { margin: 24px 0 6px; font-size: 18px; }
p, li { color: var(--muted); }
.lead { max-width: 690px; font-size: 19px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 28px 0; }
.card { padding: 18px; border: 1px solid var(--rule); border-radius: 14px; background: #f9fbff; }
.card strong { display: block; margin-bottom: 5px; }
.card p { margin: 0; font-size: 14px; }
.notice { margin: 24px 0; padding: 16px 18px; border-left: 4px solid var(--green); border-radius: 8px; background: #effaf7; }
.notice p { margin: 0; color: #275b4d; }
.pricing-section { margin-top: 38px; scroll-margin-top: 24px; }
.pricing-section h2 { max-width: 650px; }
.pricing-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 14px; margin: 20px 0 14px; }
.price-card { display: flex; min-height: 100%; padding: 22px; border: 1px solid var(--rule); border-radius: 16px; background: #f9fbff; flex-direction: column; }
.price-card--featured { border: 2px solid var(--blue); background: #f6f8ff; box-shadow: 7px 7px 0 #dfe7ff; }
.plan-label { min-height: 48px; color: var(--ink); font-weight: 850; }
.price-card > strong { margin-top: 8px; font-size: 34px; line-height: 1; }
.price-card > small { margin-top: 6px; color: var(--muted); }
.price-card ul { margin: 18px 0 22px; padding-left: 20px; }
.checkout-button { margin-top: auto; padding: 13px 16px; border: 0; border-radius: 9px; background: var(--ink); color: white; cursor: pointer; font-weight: 850; }
.checkout-button:hover, .checkout-button:focus-visible { background: var(--blue); }
.checkout-button:disabled { cursor: wait; opacity: .68; }
.checkout-status { min-height: 24px; margin: 9px 0 0; font-size: 13px; }
.purchase-note { padding: 14px 16px; border: 1px solid var(--rule); border-radius: 10px; background: #fffdf6; }
.purchase-note p { margin: 0; font-size: 13px; }
.confirmation-card { max-width: 880px; }
.license-panel { margin: 24px 0; padding: 20px; border: 1px solid var(--rule); border-radius: 14px; background: #f9fbff; }
.license-panel label { display: block; margin-bottom: 8px; font-weight: 800; }
.license-copy-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 9px; }
.license-copy-row input { min-width: 0; padding: 12px; border: 1px solid var(--rule); border-radius: 8px; background: white; font: 700 15px/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; }
.license-copy-row button { padding: 10px 16px; border: 0; border-radius: 8px; background: var(--blue); color: white; cursor: pointer; font-weight: 800; }
code { padding: 2px 5px; border-radius: 5px; background: #edf2fa; color: #244061; }
footer { padding: 0 0 36px; color: var(--muted); font-size: 13px; }

@media (max-width: 680px) {
    .grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    .license-copy-row { grid-template-columns: 1fr; }
    main { border-radius: 16px; }
}