:root {
  color-scheme: dark;
  --ink: #f7f5ef;
  --muted: #a9ada8;
  --night: #0d1110;
  --panel: #171d1b;
  --panel-soft: #202825;
  --line: #303a36;
  --lime: #d5ff61;
  --lime-ink: #172000;
  --orange: #ff7648;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--night);
  color: var(--ink);
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  margin: 0;
  background:
    radial-gradient(circle at 86% 7%, rgba(255, 118, 72, .15), transparent 28rem),
    radial-gradient(circle at 8% 38%, rgba(213, 255, 97, .08), transparent 25rem),
    var(--night);
}

button, a { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: wait; opacity: .55; }

.page-shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.site-header, footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 0;
  color: var(--muted);
  font-size: .84rem;
}

.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 750; text-decoration: none; }
.brand-mark { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 9px; color: var(--lime-ink); background: var(--lime); }
.sandbox-badge { padding: 7px 11px; border: 1px solid var(--line); border-radius: 999px; }

.hero { padding: 82px 0 38px; }
.kicker, .section-label, .plan-eyebrow { margin: 0 0 18px; color: var(--lime); font-size: .75rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.hero h1 { max-width: 900px; margin: 0; font-size: clamp(3rem, 8.5vw, 7.3rem); font-weight: 780; letter-spacing: -.075em; line-height: .91; }
.hero-copy { max-width: 640px; margin: 34px 0 0 auto; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.3rem); line-height: 1.65; }

.billing-row { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 54px; }
.billing-toggle { display: inline-flex; padding: 5px; border: 1px solid var(--line); border-radius: 999px; background: rgba(23, 29, 27, .78); }
.billing-toggle button { min-width: 104px; padding: 11px 18px; border: 0; border-radius: 999px; color: var(--muted); background: transparent; }
.billing-toggle button.is-active { color: var(--lime-ink); background: var(--lime); font-weight: 800; }
.country-label { margin: 0; color: var(--muted); font-size: .88rem; }

.plan-list { display: grid; max-width: 760px; margin: 26px auto 100px; }
.plan-card { position: relative; overflow: hidden; padding: clamp(28px, 5vw, 56px); border: 1px solid var(--line); border-radius: 30px; background: linear-gradient(150deg, rgba(36, 45, 41, .96), rgba(18, 24, 22, .98)); box-shadow: 0 40px 100px rgba(0, 0, 0, .28); }
.plan-card::after { position: absolute; top: -110px; right: -90px; width: 280px; height: 280px; content: ""; border-radius: 50%; background: rgba(213, 255, 97, .11); filter: blur(8px); }
.plan-card h2 { position: relative; margin: 0; font-size: clamp(2.6rem, 7vw, 4.8rem); letter-spacing: -.055em; }
.plan-description { position: relative; max-width: 510px; color: var(--muted); font-size: 1.05rem; line-height: 1.65; }
.price { position: relative; margin: 42px 0 0; font-size: clamp(3.4rem, 10vw, 6.5rem); font-weight: 800; letter-spacing: -.07em; line-height: 1; }
.cadence { margin: 8px 0 0; color: var(--muted); }
.features { display: grid; gap: 13px; margin: 36px 0; padding: 28px 0 0; border-top: 1px solid var(--line); list-style: none; }
.features li { display: flex; gap: 12px; line-height: 1.45; }
.features li::before { content: "↗"; color: var(--lime); font-weight: 900; }
.subscribe-button { width: 100%; padding: 17px 24px; border: 0; border-radius: 14px; color: var(--lime-ink); background: var(--lime); font-weight: 850; transition: transform .15s ease, box-shadow .15s ease; }
.subscribe-button:not(:disabled):hover { transform: translateY(-2px); box-shadow: 0 14px 35px rgba(213, 255, 97, .18); }
.reassurance { margin: 15px 0 0; color: var(--muted); font-size: .8rem; text-align: center; }
.page-error { max-width: 760px; margin: -70px auto 80px; padding: 14px 18px; border: 1px solid rgba(255, 118, 72, .45); border-radius: 12px; color: #ffd7ca; background: rgba(255, 118, 72, .09); }

.how-it-works { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; padding: 80px 0 110px; border-top: 1px solid var(--line); }
.how-it-works h2 { max-width: 460px; margin: 0; font-size: clamp(2.2rem, 5vw, 4rem); letter-spacing: -.055em; line-height: 1; }
.steps { display: grid; gap: 0; }
.steps p { display: grid; grid-template-columns: 46px 1fr; gap: 18px; margin: 0; padding: 22px 0; border-bottom: 1px solid var(--line); color: var(--muted); line-height: 1.5; }
.steps span { color: var(--orange); font-family: ui-monospace, monospace; }
footer { border-top: 1px solid var(--line); }

.welcome-page { display: grid; min-height: 100vh; padding: 24px; place-items: center; }
.welcome-card { width: min(640px, 100%); padding: clamp(34px, 7vw, 72px); border: 1px solid var(--line); border-radius: 30px; background: var(--panel); text-align: center; }
.success-mark { display: grid; width: 62px; height: 62px; margin: 0 auto 28px; place-items: center; border-radius: 50%; color: var(--lime-ink); background: var(--lime); font-size: 1.6rem; font-weight: 900; }
.welcome-card h1 { margin: 0; font-size: clamp(2.6rem, 8vw, 5rem); letter-spacing: -.06em; }
.welcome-card p:not(.kicker) { color: var(--muted); line-height: 1.65; }
.return-link { display: inline-block; margin-top: 22px; padding: 13px 19px; border-radius: 10px; color: var(--lime-ink); background: var(--lime); font-weight: 800; text-decoration: none; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 700px) {
  .page-shell { width: min(100% - 24px, 1120px); }
  .site-header { padding-top: 18px; }
  .sandbox-badge { display: none; }
  .hero { padding-top: 56px; }
  .hero-copy { margin-left: 0; }
  .billing-row, footer { align-items: flex-start; flex-direction: column; }
  .billing-toggle { width: 100%; }
  .billing-toggle button { flex: 1; min-width: 0; }
  .plan-card { border-radius: 22px; }
  .how-it-works { grid-template-columns: 1fr; gap: 42px; padding: 62px 0 78px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}