:root {
  color-scheme: dark;
  --navy: #050a1f;
  --panel: rgba(255, 255, 255, 0.09);
  --line: rgba(255, 255, 255, 0.16);
  --text: #f7f3ff;
  --muted: rgba(247, 243, 255, 0.72);
  --lavender: #9c7cff;
  --aqua: #7fe7ff;
  --sunrise: #ffb26f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 20% 12%, rgba(156, 124, 255, 0.42), transparent 34rem),
    radial-gradient(circle at 86% 24%, rgba(127, 231, 255, 0.28), transparent 26rem),
    linear-gradient(145deg, #050a1f 0%, #10124c 54%, #24104a 100%);
  color: var(--text);
}

a {
  color: inherit;
}

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 56px 0;
}

.hero,
.card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(24px);
  border-radius: 28px;
}

.hero {
  min-height: calc(100vh - 112px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(28px, 8vw, 76px);
}

.mark {
  width: 76px;
  height: 76px;
  border-radius: 22px;
  display: grid;
  place-items: center;
  background: linear-gradient(145deg, var(--lavender), var(--aqua));
  color: #061029;
  font-weight: 800;
  font-size: 24px;
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--aqua);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 13px;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(44px, 9vw, 82px);
  line-height: 0.95;
}

h2 {
  margin: 0 0 14px;
  font-size: 32px;
}

h3 {
  margin: 28px 0 8px;
  font-size: 19px;
}

p,
li {
  color: var(--muted);
  line-height: 1.65;
}

.lead {
  max-width: 680px;
  font-size: 21px;
  margin: 22px 0 34px;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.links a {
  text-decoration: none;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.1);
  font-weight: 700;
}

.card {
  padding: clamp(24px, 5vw, 48px);
}

.back {
  display: inline-flex;
  margin-bottom: 24px;
  color: var(--aqua);
  text-decoration: none;
  font-weight: 700;
}

.notice {
  margin-top: 28px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 178, 111, 0.12);
  border: 1px solid rgba(255, 178, 111, 0.32);
}

@media (max-width: 640px) {
  .shell {
    padding: 22px 0;
  }

  .hero {
    min-height: calc(100vh - 44px);
  }
}