:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #020617;
  color: #e2e8f0;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 5%, rgba(0, 43, 235, 0.2), transparent 28rem),
    linear-gradient(180deg, #020617 0%, #0f172a 100%);
}

a { color: #93c5fd; }
a:hover { color: #bfdbfe; }

.site-header {
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(2, 6, 23, 0.86);
  backdrop-filter: blur(14px);
}

.site-header__inner,
.page,
.site-footer {
  width: min(100% - 32px, 900px);
  margin-inline: auto;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand {
  color: #fff;
  font-size: 1.05rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.nav { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.nav a { color: #94a3b8; font-size: 0.82rem; font-weight: 700; text-decoration: none; }
.nav a[aria-current="page"], .nav a:hover { color: #fff; }

.page { padding: 64px 0; }
.eyebrow {
  margin: 0 0 12px;
  color: #60a5fa;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  color: #fff;
  font-size: clamp(2.25rem, 7vw, 4.5rem);
  line-height: 0.95;
  letter-spacing: -0.06em;
}

.lead {
  max-width: 720px;
  margin: 24px 0 44px;
  color: #cbd5e1;
  font-size: 1.08rem;
  line-height: 1.75;
}

.card {
  margin-top: 18px;
  padding: clamp(22px, 5vw, 36px);
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 24px;
  background: rgba(15, 23, 42, 0.72);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.2);
}

h2 { margin: 0 0 14px; color: #fff; font-size: 1.25rem; }
h3 { margin: 24px 0 8px; color: #dbeafe; font-size: 1rem; }
p, li { color: #cbd5e1; line-height: 1.7; }
ul, ol { padding-left: 22px; }
li + li { margin-top: 8px; }
.notice { border-left: 4px solid #3b82f6; background: rgba(30, 64, 175, 0.14); }
.updated { color: #64748b; font-size: 0.8rem; }
.button {
  display: inline-flex;
  margin-top: 20px;
  padding: 13px 18px;
  border-radius: 14px;
  background: #002beb;
  color: #fff;
  font-size: 0.85rem;
  font-weight: 900;
  text-decoration: none;
}
.button:hover { background: #1d4ed8; color: #fff; }

.site-footer {
  padding: 30px 0 48px;
  border-top: 1px solid rgba(148, 163, 184, 0.14);
  color: #64748b;
  font-size: 0.75rem;
  text-align: center;
}

@media (max-width: 640px) {
  .site-header__inner { align-items: flex-start; flex-direction: column; padding-block: 18px; }
  .page { padding-top: 46px; }
}