:root {
  --ink: #05070c;
  --panel: #101820;
  --line: #1c2632;
  --text: #e8edf3;
  --muted: #9aa7b6;
  --magenta: #ff0a78;
  --cyan: #18d8ff;
  color-scheme: dark;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--ink);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a { color: var(--cyan); }
a:hover { color: #fff; }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }

header.top {
  border-bottom: 1px solid var(--line);
}
header.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 60px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.brand img { width: 32px; height: 32px; border-radius: 8px; }
nav.links { display: flex; align-items: center; gap: 16px; font-size: 15px; }
nav.links a { color: var(--muted); text-decoration: none; }
nav.links a:hover, nav.links a[aria-current] { color: var(--text); }
nav.links .switch a[aria-current] { color: var(--magenta); font-weight: 600; }

.hero { text-align: center; padding: 56px 0 8px; }
.hero img {
  width: 128px;
  height: 128px;
  border-radius: 28px;
  box-shadow: -12px 0 40px rgba(24, 216, 255, 0.25), 12px 0 40px rgba(255, 10, 120, 0.25);
}
.hero h1 { font-size: 32px; letter-spacing: 0.08em; margin: 24px 0 8px; }
.hero p { color: var(--muted); margin: 0 auto; max-width: 520px; }

.switch {
  display: flex;
  gap: 2px;
  padding-left: 12px;
  border-left: 1px solid var(--line);
}
.switch a { padding: 0 4px; font-size: 13px; letter-spacing: 0.04em; }

article { padding: 8px 0 40px; }
article h1 { font-size: 28px; margin: 32px 0 4px; }
article h2 { font-size: 19px; margin: 28px 0 8px; }
article p, article ul { margin: 0 0 10px; }
article ul { padding-left: 20px; }

.note {
  background: var(--panel);
  border-left: 3px solid var(--magenta);
  border-radius: 6px;
  padding: 12px 16px;
  margin: 16px 0;
}
.muted { color: var(--muted); font-size: 14px; }

footer {
  border-top: 1px solid var(--line);
  padding: 24px 0 40px;
  color: var(--muted);
  font-size: 14px;
}
footer .wrap { display: flex; flex-wrap: wrap; gap: 8px 16px; justify-content: space-between; }