:root {
  --bg: #0a0f0c;
  --card: #121a15;
  --text: #e8f0ea;
  --muted: #8fa396;
  --accent: #00ff88;
  --link: #5ee0a0;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 17px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(0, 255, 136, 0.2);
}

h1 {
  font-size: 1.65rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 0.35rem;
  color: var(--accent);
}

.sub {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0;
}

nav.lang {
  margin-top: 1rem;
  font-size: 0.9rem;
}

nav.lang a {
  margin-right: 1rem;
}

main h2 {
  font-size: 1.1rem;
  margin: 1.75rem 0 0.5rem;
  color: var(--text);
}

main h2:first-of-type {
  margin-top: 0;
}

main p,
main ul {
  margin: 0.5rem 0;
  color: var(--muted);
}

main ul {
  padding-left: 1.25rem;
}

main strong {
  color: var(--text);
}

.card {
  background: var(--card);
  border-radius: 12px;
  padding: 1.25rem 1.35rem;
  margin: 1.25rem 0;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

footer {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: var(--muted);
}

/* Hub index */
.hub h1 {
  font-size: 2rem;
}

.hub .grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

@media (min-width: 520px) {
  .hub .grid {
    grid-template-columns: 1fr 1fr;
  }
}

.hub .tile {
  display: block;
  background: var(--card);
  border: 1px solid rgba(0, 255, 136, 0.15);
  border-radius: 12px;
  padding: 1.1rem 1.2rem;
  color: var(--text);
  transition: border-color 0.15s, transform 0.15s;
}

.hub .tile:hover {
  border-color: var(--accent);
  text-decoration: none;
  transform: translateY(-1px);
}

.hub .tile strong {
  display: block;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

.hub .tile span {
  font-size: 0.9rem;
  color: var(--muted);
}

.cta {
  display: inline-block;
  margin-top: 0.75rem;
  padding: 0.5rem 1rem;
  background: rgba(0, 255, 136, 0.15);
  border-radius: 8px;
  font-weight: 600;
  color: var(--accent);
}