:root {
  --bg: #0d0d0d;
  --card: #1e1e1e;
  --text: #ffffff;
  --muted: #8e8e93;
  --accent: #00b4d8;
  --accent-deep: #0077b6;
  --warn: #ff6b35;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

.wrap {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.brand-icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.6rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  display: grid;
  place-items: center;
  font-size: 1.25rem;
}

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0;
}

.sub {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0.35rem 0 0;
}

nav.links {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.9rem;
}

nav.links a {
  color: var(--muted);
}

nav.links a:hover {
  color: var(--accent);
}

main h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 2rem 0 0.75rem;
  color: var(--text);
}

main p,
main li {
  color: var(--muted);
  font-size: 0.95rem;
}

main ul {
  padding-left: 1.25rem;
}

.card {
  background: var(--card);
  border-radius: 0.75rem;
  padding: 1.25rem 1.35rem;
  margin-top: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.8rem;
  color: var(--muted);
}

.lang-note {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px dashed rgba(255, 255, 255, 0.1);
}