html, body {
  height: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: #0b1220;
  color: #e5e7eb;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 20px;
}

.site-header {
  background: #0f172a;
  border-bottom: 1px solid #1f2937;
}

.brand-title {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.2px;
}

.brand-subtitle {
  font-size: 13px;
  color: #94a3b8;
  margin-top: 2px;
}

.nav {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.nav-link {
  color: #93c5fd;
  text-decoration: none;
  padding: 8px 10px;
  border: 1px solid #1f2937;
  background: #111827;
  border-radius: 10px;
}

.nav-link:hover {
  background: #0b1220;
}

.card {
  background: #0f172a;
  border: 1px solid #1f2937;
  border-radius: 14px;
  padding: 16px;
  margin: 14px 0;
}

h1 {
  font-size: 22px;
  margin: 10px 0 6px;
}

h2 {
  font-size: 16px;
  margin: 0 0 10px;
}

p {
  margin: 8px 0;
  color: #cbd5e1;
  line-height: 1.45;
}

ul {
  margin: 10px 0 0 18px;
  color: #cbd5e1;
}

li {
  margin: 6px 0;
}

code {
  background: #111827;
  border: 1px solid #1f2937;
  padding: 2px 6px;
  border-radius: 8px;
  color: #e5e7eb;
}

.muted {
  color: #94a3b8;
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

@media (min-width: 860px) {
  .grid {
    grid-template-columns: 1fr 1fr;
  }
}

.site-footer {
  margin-top: 30px;
  background: #0f172a;
  border-top: 1px solid #1f2937;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.footer-left {
  color: #94a3b8;
}

.footer-right {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-link {
  color: #93c5fd;
  text-decoration: none;
}

.footer-link:hover {
  text-decoration: underline;
}