:root {
  --bg: #05081d;
  --bg-elevated: #0d1829;
  --surface: #081127;
  --border: #1f2940;
  --border-subtle: #121a2a;
  --fg: #ffffff;
  --fg-body: #ccd0e0;
  --fg-caption: #c4c9d8;
  --fg-muted: #858ca4;
  --primary: #6366f1;
  --primary-strong: #4843fc;
  --accent: #03fd8c;
  --alert: #fb3b46;
  --hero-edge: #3532e3;
  --radius: 16px;
  --max: 72rem;
  --prose: 42rem;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg-body);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto;
  height: 28rem;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 50% at 80% -10%, rgb(53 50 227 / 28%), transparent 55%),
    radial-gradient(ellipse 50% 40% at 0% 0%, rgb(3 253 140 / 8%), transparent 50%);
  z-index: 0;
}

a {
  color: #a5b4fc;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--fg);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 20;
  padding: 0.5rem 0.75rem;
  background: var(--fg);
  color: var(--bg);
  border-radius: 8px;
}

.skip-link:focus {
  top: 1rem;
}

.wrap {
  position: relative;
  z-index: 1;
  width: min(var(--max), calc(100% - 2.5rem));
  margin: 0 auto;
}

.site-header {
  position: relative;
  z-index: 2;
  border-bottom: 1px solid var(--border-subtle);
  background: rgb(5 8 29 / 72%);
  backdrop-filter: blur(14px);
}

.site-header .wrap,
.site-footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--fg);
  text-decoration: none;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand img {
  width: 2rem;
  height: 2rem;
  border-radius: 0.45rem;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.15rem;
}

.nav a {
  color: var(--fg-caption);
  text-decoration: none;
  font-size: 0.9375rem;
}

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

main {
  position: relative;
  z-index: 1;
  flex: 1;
  padding: 3.25rem 0 4.5rem;
}

.hero {
  padding: 1.25rem 0 2.5rem;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  color: var(--fg);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.15rem, 5vw, 3.35rem);
  font-weight: 700;
}

h2 {
  margin: 2.4rem 0 0.75rem;
  font-size: 1.35rem;
}

h3 {
  margin: 1.5rem 0 0.5rem;
  font-size: 1.05rem;
}

.lede {
  max-width: 38rem;
  margin: 0 0 1.75rem;
  color: var(--fg-caption);
  font-size: 1.2rem;
  line-height: 1.55;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.65rem 1.1rem;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
}

.button-primary {
  background: var(--primary);
  color: var(--fg);
}

.button-primary:hover {
  background: var(--primary-strong);
  color: var(--fg);
}

.button-ghost {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--fg);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 0.5rem 0 2.25rem;
}

.card {
  padding: 1.25rem 1.3rem 1.35rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
}

.card h2,
.card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--fg-caption);
}

.notice {
  padding: 1rem 1.15rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--alert);
  border-radius: 12px;
  background: var(--surface);
  color: var(--fg-caption);
}

.notice strong {
  color: var(--fg);
}

.prose {
  max-width: var(--prose);
}

.prose p,
.prose li {
  color: var(--fg-body);
}

.prose ul {
  padding-left: 1.2rem;
}

.prose li + li {
  margin-top: 0.4rem;
}

.meta {
  margin: 0 0 1.75rem;
  color: var(--fg-muted);
  font-size: 0.9rem;
}

.toc {
  margin: 0 0 2rem;
  padding: 1rem 1.2rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}

.toc ol {
  margin: 0.4rem 0 0;
  padding-left: 1.2rem;
}

.faq + .faq {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.faq h2 {
  margin-top: 0;
}

.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border-subtle);
  color: var(--fg-muted);
  font-size: 0.875rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 800px) {
  .grid {
    grid-template-columns: 1fr;
  }

  .site-header .wrap,
  .site-footer .wrap {
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media print {
  body,
  body::before,
  .site-header,
  .card,
  .notice,
  .toc {
    background: #fff;
    color: #111;
  }

  .site-header,
  .site-footer,
  .actions,
  .skip-link {
    display: none;
  }

  h1,
  h2,
  h3,
  .prose p,
  .prose li {
    color: #111;
  }
}