:root {
  --dark: #1E2D3D;
  --mid: #4A5C6E;
  --light: #8FA3B1;
  --border: #DDD9D0;
  --bg: #F7F5F0;
  --surface: #FFFFFF;
  --teal: #34B3A1;
  --peach: #E8B98C;
  --sans: Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "DM Mono", "Courier New", monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--dark);
  background: var(--bg);
  line-height: 1.6;
}

header {
  background: var(--dark);
  padding: 28px 24px;
  display: flex;
  align-items: center;
  gap: 14px;
}

header img {
  width: 40px;
  height: 40px;
  border-radius: 9px;
}

header .title {
  color: #fff;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
}

header .title span {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--peach);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 2px;
}

nav {
  max-width: 780px;
  margin: 0 auto;
  padding: 18px 24px 0;
  display: flex;
  gap: 20px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

nav a {
  color: var(--mid);
  text-decoration: none;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}

nav a.active, nav a:hover {
  color: var(--dark);
  border-bottom-color: var(--teal);
}

main {
  max-width: 780px;
  margin: 0 auto;
  padding: 24px 24px 80px;
}

.lang-toggle {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 7px;
  overflow: hidden;
  margin-bottom: 24px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
}

.lang-toggle button {
  border: none;
  background: var(--surface);
  color: var(--mid);
  padding: 8px 16px;
  cursor: pointer;
}

.lang-toggle button.active {
  background: var(--dark);
  color: #fff;
}

article {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px 36px;
}

article h1 {
  margin-top: 0;
  font-size: 22px;
}

article .updated {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--light);
  margin-bottom: 28px;
}

article h4 {
  font-size: 14.5px;
  color: var(--dark);
  margin: 26px 0 8px;
}

article h4:first-of-type { margin-top: 0; }

article p, article li {
  font-size: 14.5px;
  color: var(--mid);
}

article code {
  background: var(--bg);
  padding: 2px 5px;
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 13px;
}

article [lang="es"] { display: none; }

footer {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 24px 40px;
  font-size: 12.5px;
  color: var(--light);
}

.home-links {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.home-links a {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  text-decoration: none;
  color: var(--dark);
  font-weight: 600;
}

.home-links a span {
  display: block;
  font-weight: 400;
  color: var(--mid);
  font-size: 13px;
  margin-top: 4px;
}

.home-links a:hover { border-color: var(--teal); }