:root {
  color-scheme: dark;
  --bg: #080a12;
  --panel: rgba(255, 255, 255, 0.065);
  --panel-strong: rgba(255, 255, 255, 0.10);
  --border: rgba(255, 255, 255, 0.14);
  --text: #f7f8fb;
  --muted: #aeb4c2;
  --accent: #b8ff52;
  --cyan: #3ed8ef;
  --purple: #a855f7;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  min-width: 0;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 88% 3%, rgba(168, 85, 247, 0.28), transparent 34rem),
    radial-gradient(circle at 2% 88%, rgba(62, 216, 239, 0.18), transparent 31rem),
    var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", sans-serif;
  line-height: 1.68;
}

a {
  color: inherit;
}

.shell {
  width: min(calc(100% - 32px), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(8, 10, 18, 0.82);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(18px);
}

.nav {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 900;
}

.brand img {
  width: 42px;
  height: 42px;
  border-radius: 11px;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 700;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--accent);
}

main {
  padding: 72px 0 88px;
}

.eyebrow {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.18em;
}

h1,
h2,
h3 {
  line-height: 1.16;
  letter-spacing: -0.025em;
}

h1 {
  max-width: 820px;
  margin: 18px 0;
  font-size: clamp(2.65rem, 8vw, 5.8rem);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.7rem);
}

h3 {
  font-size: 1.15rem;
}

.lede {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.5vw, 1.3rem);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: 999px;
  text-decoration: none;
  font-weight: 900;
}

.button.primary {
  color: #071008;
  background: var(--accent);
  border-color: transparent;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 40px;
}

.card {
  min-width: 0;
  padding: 24px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.22);
}

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

.content {
  max-width: 820px;
}

.content section {
  margin-top: 48px;
  padding-top: 12px;
}

.steps {
  padding-left: 1.4rem;
}

.steps li {
  margin: 0.8rem 0;
}

.notice {
  margin-top: 28px;
  padding: 18px 20px;
  color: var(--muted);
  background: var(--panel-strong);
  border-left: 3px solid var(--accent);
  border-radius: 12px;
}

.site-footer {
  padding: 28px 0 44px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .nav-links {
    gap: 14px;
  }

  main {
    padding-top: 48px;
  }

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

  .card {
    padding: 20px;
    border-radius: 20px;
  }
}

@media (max-width: 380px) {
  .shell {
    width: min(calc(100% - 22px), var(--max));
  }

  .nav-links {
    font-size: 0.85rem;
  }

  h1 {
    font-size: 2.35rem;
  }
}