:root {
  --ink: #102a2f;
  --muted: #5c6d70;
  --line: #cdd9d5;
  --canvas: #f4f7f5;
  --paper: #ffffff;
  --aqua: #20a89a;
  --amber: #efb63d;
  --danger: #b7463f;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--canvas); }
button, input { font: inherit; }
.shell { max-width: 1050px; min-height: 100vh; margin: 0 auto; padding: 32px 48px 24px; display: flex; flex-direction: column; }
.masthead { display: flex; justify-content: space-between; align-items: center; padding-bottom: 42px; border-bottom: 1px solid var(--line); }
.brand { color: inherit; text-decoration: none; font-weight: 800; letter-spacing: .08em; font-size: .9rem; }
.brand span { color: var(--aqua); }
.environment { display: flex; gap: 8px; align-items: center; margin: 0; color: var(--muted); font-size: .84rem; font-weight: 600; }
.environment span { width: 9px; height: 9px; border-radius: 50%; background: var(--amber); }
.intro { max-width: 680px; padding: 84px 0 64px; }
.eyebrow, .readiness-label { margin: 0 0 12px; color: var(--aqua); font-size: .76rem; letter-spacing: .12em; text-transform: uppercase; font-weight: 800; }
h1 { max-width: 650px; margin: 0; font-size: clamp(2.5rem, 7vw, 5.3rem); line-height: .98; letter-spacing: 0; font-weight: 780; }
.lede { max-width: 610px; margin: 24px 0 0; font-size: 1.05rem; line-height: 1.65; color: var(--muted); }
.payment-layout { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(230px, .8fr); gap: 58px; align-items: start; }
.payment-form { padding-top: 4px; }
.field-row { margin-bottom: 30px; }
label { display: block; margin-bottom: 9px; font-size: .86rem; font-weight: 750; }
input { width: 100%; border: 1px solid #aab9b5; border-radius: 4px; background: var(--paper); color: var(--ink); padding: 15px 16px; outline: none; }
input:focus { border-color: var(--aqua); box-shadow: 0 0 0 3px rgba(32, 168, 154, .18); }
small { display: block; color: var(--muted); margin-top: 8px; font-size: .78rem; }
.amount-input { display: flex; align-items: center; border: 1px solid #aab9b5; border-radius: 4px; background: var(--paper); }
.amount-input:focus-within { border-color: var(--aqua); box-shadow: 0 0 0 3px rgba(32, 168, 154, .18); }
.amount-input span { padding-left: 16px; color: var(--muted); font-size: .86rem; font-weight: 750; }
.amount-input input { border: 0; box-shadow: none; padding-left: 9px; }
button { width: 100%; border: 0; border-radius: 4px; padding: 16px 18px; background: var(--ink); color: white; font-weight: 750; cursor: pointer; transition: background .18s ease, transform .18s ease; }
button:hover { background: var(--aqua); transform: translateY(-1px); }
button:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; }
.form-status { min-height: 1.5em; margin: 14px 0 0; color: var(--danger); font-size: .9rem; line-height: 1.45; }
.readiness { border-top: 3px solid var(--aqua); padding-top: 18px; }
.readiness dl { margin: 0; }
.readiness dl div { display: flex; justify-content: space-between; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: .88rem; }
.readiness dt { color: var(--muted); } .readiness dd { margin: 0; font-weight: 750; text-align: right; }
.readiness dl div:last-child dd { color: #9b6410; }
.readiness-note { margin: 18px 0 0; color: var(--muted); font-size: .82rem; line-height: 1.5; }
footer { margin-top: auto; display: flex; justify-content: space-between; gap: 22px; padding-top: 68px; color: var(--muted); font-size: .76rem; } code { color: var(--ink); }
@media (max-width: 700px) { .shell { padding: 22px 22px 18px; } .masthead { align-items: flex-start; gap: 18px; flex-direction: column; padding-bottom: 30px; } .intro { padding: 58px 0 48px; } .payment-layout { grid-template-columns: 1fr; gap: 48px; } footer { margin-top: 58px; padding-top: 24px; border-top: 1px solid var(--line); flex-direction: column; gap: 7px; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition-duration: 0.01ms !important; } }