:root {
  color-scheme: light;
  --ink: #15182a;
  --muted: #697087;
  --line: #dfe3ed;
  --paper: #ffffff;
  --surface: #f2f4f9;
  --violet: #5a5de6;
  --violet-light: #cfd0ff;
}

* { box-sizing: border-box; }

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

.shell {
  width: min(900px, calc(100% - 32px));
  margin: 38px auto 64px;
}

.hero {
  padding: 38px;
  overflow: hidden;
  border-radius: 28px;
  background:
    radial-gradient(circle at 92% 0, rgba(123, 126, 255, .95), transparent 42%),
    linear-gradient(145deg, #171c36, #242b55);
  color: #fff;
  box-shadow: 0 24px 70px rgba(27, 34, 78, .22);
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-weight: 850;
  letter-spacing: -.02em;
}

.mark {
  width: 34px;
  height: 34px;
  border-radius: 11px;
  background: linear-gradient(145deg, #9c9eff, #5d60ed);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, .5);
}

.eyebrow {
  margin: 42px 0 5px;
  color: var(--violet-light);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(35px, 7vw, 56px);
  letter-spacing: -.055em;
  line-height: 1.02;
}

.intro {
  max-width: 680px;
  margin: 16px 0 0;
  color: #e1e3ff;
  font-size: 18px;
}

.cards {
  display: grid;
  gap: 13px;
  margin-top: 20px;
}

.card {
  padding: 24px 26px;
  border: 1px solid var(--line);
  border-radius: 19px;
  background: var(--paper);
  box-shadow: 0 10px 34px rgba(29, 36, 72, .055);
}

.card h2 {
  margin: 0 0 7px;
  font-size: 20px;
  letter-spacing: -.025em;
}

.card p { margin: 0; color: var(--muted); }

.choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 20px;
}

.choice {
  display: block;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 19px;
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  transition: transform .16s ease, box-shadow .16s ease;
}

.choice:hover,
.choice:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(29, 36, 72, .11);
}

.choice strong { display: block; font-size: 21px; }
.choice span { color: var(--muted); }

footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  margin-top: 22px;
  padding: 0 4px;
  color: var(--muted);
  font-size: 13px;
}

footer a { color: var(--violet); font-weight: 800; text-decoration: none; }

.callback-card { margin-top: 20px; }
.callback-link { margin-top: 14px !important; }
.callback-link a { color: var(--violet); font-weight: 800; }

@media (max-width: 620px) {
  .shell { margin-top: 16px; }
  .hero { padding: 28px; border-radius: 22px; }
  .card, .choice { padding: 21px; }
  .choice-grid { grid-template-columns: 1fr; }
}