:root {
  color-scheme: light dark;
  --background: #f4f6fb;
  --surface: rgba(255, 255, 255, 0.78);
  --text: #15213a;
  --muted: #5d6880;
  --accent: #3478f6;
  --border: rgba(52, 120, 246, 0.16);
  --shadow: 0 24px 70px rgba(35, 66, 125, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  line-height: 1.6;
  background: var(--background);
  color: var(--text);
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 15% 5%, rgba(105, 157, 255, 0.24), transparent 32rem),
    radial-gradient(circle at 90% 90%, rgba(130, 107, 255, 0.16), transparent 30rem),
    var(--background);
}

a {
  color: var(--accent);
}

.shell {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

.brand {
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 16px;
  font-size: 0.92rem;
}

.card {
  padding: clamp(28px, 6vw, 56px);
  border: 1px solid var(--border);
  border-radius: 30px;
  background: var(--surface);
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(24px) saturate(140%);
  backdrop-filter: blur(24px) saturate(140%);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2 {
  letter-spacing: -0.035em;
  line-height: 1.15;
}

h1 {
  margin: 0 0 18px;
  font-size: clamp(2.35rem, 8vw, 4.5rem);
}

h2 {
  margin: 36px 0 10px;
  font-size: 1.35rem;
}

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

.lead {
  max-width: 42rem;
  margin: 0;
  font-size: 1.12rem;
}

.actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 32px;
}

.action {
  display: block;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 18px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.45);
  text-decoration: none;
}

.action strong,
.action span {
  display: block;
}

.action span {
  margin-top: 4px;
  color: var(--muted);
  font-size: 0.9rem;
}

.notice {
  margin: 28px 0 0;
  padding: 16px 18px;
  border-left: 4px solid var(--accent);
  border-radius: 12px;
  background: rgba(52, 120, 246, 0.08);
}

.meta,
footer {
  color: var(--muted);
  font-size: 0.88rem;
}

footer {
  padding: 22px 4px 0;
  text-align: center;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0c1120;
    --surface: rgba(22, 29, 49, 0.78);
    --text: #f2f5ff;
    --muted: #b3bdd4;
    --accent: #76a7ff;
    --border: rgba(138, 176, 255, 0.18);
    --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
  }

  .action {
    background: rgba(255, 255, 255, 0.035);
  }
}

@media (max-width: 560px) {
  .shell {
    padding-top: 24px;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .actions {
    grid-template-columns: 1fr;
  }
}