:root {
  --bg: #04060a;
  --panel: #0a0f17;
  --line: #16232f;
  --cyan: #22e0ff;
  --text: #c9f1ff;
  --dim: #5c7c8a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 20px 80px;
  background: var(--bg);
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  font-size: 15px;
  line-height: 1.65;
}

.wrap { max-width: 720px; margin: 0 auto; }

header {
  padding: 40px 0 24px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 32px;
}

.brand {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 3px;
  text-shadow: 0 0 14px rgba(34, 224, 255, 0.35);
}

.tag { color: var(--dim); font-size: 12px; letter-spacing: 2px; margin-top: 4px; }

nav { margin-top: 18px; display: flex; gap: 16px; flex-wrap: wrap; }
nav a, .langs button {
  color: var(--cyan);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 1.4px;
  border: 1px solid rgba(34, 224, 255, 0.35);
  padding: 7px 12px;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
}
nav a:hover, .langs button:hover { background: rgba(34, 224, 255, 0.08); }
.langs { margin-top: 18px; display: flex; gap: 8px; }
.langs button.on { background: var(--cyan); color: var(--bg); border-color: var(--cyan); }

h1 { font-size: 20px; letter-spacing: 2px; margin: 0 0 6px; }
h2 { font-size: 15px; letter-spacing: 1.6px; margin: 34px 0 10px; color: var(--cyan); }
p, li { color: var(--text); }
ul { padding-left: 20px; }
li { margin-bottom: 8px; }
strong { color: #fff; }
.muted { color: var(--dim); font-size: 13px; }
code {
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 1px 5px;
  font-size: 13px;
}
footer {
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  color: var(--dim);
  font-size: 12px;
}
[data-lang] { display: none; }
[data-lang].on { display: block; }