:root {
  color-scheme: dark;
  --bg: #07111f;
  --panel: #0f1b2ee0;
  --panel-soft: rgba(15, 27, 46, 0.68);
  --line: #22324a;
  --line-soft: rgba(148, 163, 184, 0.18);
  --text: #f5f7fb;
  --muted: #a8b3c9;
  --cyan: #38c9eb;
  --gold: #ffd84d;
  --mint: #7cff9e;
}

* {
  box-sizing: border-box;
}

html {
  overflow-wrap: anywhere;
}

body {
  margin: 0;
  font-family: Rajdhani, "Exo 2", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 82% 8%, rgba(54, 214, 255, 0.16), transparent 28%),
    radial-gradient(circle at 12% 18%, rgba(255, 216, 77, 0.08), transparent 24%),
    linear-gradient(180deg, var(--bg), #050b15 58%, #02050b);
  color: var(--text);
  line-height: 1.72;
}

a {
  color: var(--cyan);
  font-weight: 800;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--cyan) 85%, var(--text));
  outline-offset: 3px;
  border-radius: 8px;
}

.wrap {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.site-nav,
.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

.site-nav {
  border-bottom: 1px solid var(--line);
  padding-bottom: 18px;
}

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 44px;
  padding-top: 22px;
  color: var(--muted);
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  color: var(--text);
  font-weight: 950;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  object-fit: cover;
}

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

main {
  margin-top: 34px;
}

h1,
h2,
h3 {
  font-family: Orbitron, "Exo 2", system-ui, sans-serif;
  color: var(--text);
}

h1 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(2.45rem, 7vw, 5.25rem);
  line-height: 0.96;
}

h2 {
  margin: 34px 0 10px;
  font-size: clamp(1.35rem, 3vw, 1.85rem);
}

h3 {
  margin: 24px 0 8px;
  font-size: 1.05rem;
}

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

ul,
ol {
  padding-left: 1.25rem;
}

.lede {
  max-width: 780px;
  margin-top: 18px;
  color: #d9e4f7;
  font-size: 1.08rem;
}

.updated {
  margin-top: 12px;
  color: #cbd5e1;
  font-weight: 800;
}

.panel {
  margin-top: 24px;
  border: 1px solid color-mix(in srgb, var(--line) 82%, transparent);
  background: var(--panel);
  border-radius: 24px;
  padding: 24px;
  box-shadow: 0 18px 46px rgba(2, 6, 23, 0.42);
}

.soft-panel {
  border-color: var(--line-soft);
  background: var(--panel-soft);
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 16px;
  margin-top: 24px;
}

.guide-card {
  min-height: 100%;
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  background: rgba(2, 6, 23, 0.46);
  padding: 18px;
}

.guide-card h2,
.guide-card h3 {
  margin-top: 0;
}

.callout {
  border-color: rgba(124, 255, 158, 0.34);
  background: rgba(22, 101, 52, 0.2);
}

.note {
  border-left: 3px solid var(--gold);
  padding-left: 14px;
}

@media (max-width: 560px) {
  .site-nav,
  .site-footer {
    align-items: flex-start;
  }

  .links {
    width: 100%;
  }

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