:root {
  color-scheme: light dark;
  --bg: #f5f8fb;
  --ink: #0f172a;
  --muted: #475569;
  --line: rgba(15, 23, 42, 0.12);
  --panel: rgba(255, 255, 255, 0.78);
  --accent: #0f8b7f;
  --accent-strong: #075e58;
  --soft: rgba(15, 139, 127, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at top left, rgba(47, 111, 235, 0.12), transparent 32rem),
    linear-gradient(135deg, #f8fbff 0%, #edf7f3 48%, #fff7ef 100%);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 56px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 56px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 750;
}

.mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  background: linear-gradient(135deg, #0f8b7f, #1e63d6);
  color: white;
  font-weight: 800;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
}

.links a {
  text-decoration: none;
}

.hero {
  max-width: 760px;
  margin-bottom: 34px;
}

.eyebrow {
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 10px 0 14px;
  font-size: clamp(40px, 7vw, 72px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin: 0 0 12px;
  font-size: 24px;
  line-height: 1.2;
}

p {
  margin: 0 0 14px;
}

.lead {
  max-width: 680px;
  color: var(--muted);
  font-size: 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0;
}

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.08);
  padding: 20px;
  backdrop-filter: blur(18px);
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  font-weight: 750;
  padding: 10px 16px;
  text-decoration: none;
}

.notice {
  border-left: 4px solid var(--accent);
  background: var(--soft);
}

.footer {
  margin-top: 40px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 36px;
  }

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

  .lead {
    font-size: 18px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #061018;
    --ink: #f8fafc;
    --muted: #cbd5e1;
    --line: rgba(226, 232, 240, 0.16);
    --panel: rgba(15, 23, 42, 0.72);
    --accent: #28c7b8;
    --accent-strong: #77e0d8;
    --soft: rgba(40, 199, 184, 0.14);
  }

  body {
    background:
      radial-gradient(circle at top left, rgba(40, 199, 184, 0.14), transparent 30rem),
      linear-gradient(135deg, #061018 0%, #10212a 52%, #151922 100%);
  }

  .card {
    box-shadow: 0 22px 70px rgba(0, 0, 0, 0.34);
  }
}