:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #071326;
  color: #f7fafc;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 15% 10%, rgba(52, 205, 255, 0.16), transparent 30rem),
    radial-gradient(circle at 85% 85%, rgba(35, 160, 184, 0.12), transparent 28rem),
    #071326;
}

a {
  color: #66d9ff;
}

.shell {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #f7fafc;
  font-weight: 800;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(102, 217, 255, 0.45);
  border-radius: 13px;
  background: linear-gradient(145deg, #173253, #0b1f39);
  color: #66d9ff;
}

.card {
  margin-top: 36px;
  padding: clamp(24px, 5vw, 48px);
  border: 1px solid rgba(174, 211, 235, 0.16);
  border-radius: 24px;
  background: rgba(12, 29, 51, 0.84);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.28);
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 7vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

h2 {
  margin: 34px 0 10px;
  font-size: 1.12rem;
}

p,
li {
  color: #c5d2e3;
  font-size: 1rem;
  line-height: 1.72;
}

ul {
  padding-left: 1.2rem;
}

.lead {
  max-width: 60ch;
  font-size: 1.15rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  border-radius: 14px;
  background: #66d9ff;
  color: #06111f;
  font-weight: 750;
  text-decoration: none;
}

.button.secondary {
  border: 1px solid rgba(174, 211, 235, 0.24);
  background: transparent;
  color: #f7fafc;
}

.meta,
footer {
  color: #8294aa;
  font-size: 0.9rem;
}

footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  margin-top: 24px;
  padding: 0 4px;
}

footer nav {
  display: flex;
  gap: 16px;
}

@media (max-width: 560px) {
  .shell {
    padding-top: 28px;
  }

  .card {
    margin-top: 24px;
    border-radius: 20px;
  }
}