:root {
  --bg: #1a1424;
  --panel: #251c33;
  --ink: #f1e9dc;
  --muted: #b9aec4;
  --gold: #f4c542;
  --red: #e2574c;
  --line: #3b2f4d;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 24px 16px 64px; }
header { display: flex; align-items: center; gap: 14px; margin-bottom: 20px; }
header img { width: 64px; height: 64px; border-radius: 14px; image-rendering: pixelated; }
header a { color: inherit; text-decoration: none; }
header .name { font-weight: 800; font-size: 20px; line-height: 1.2; }
header .sub { color: var(--muted); font-size: 14px; }
.langs { display: flex; gap: 8px; margin: 0 0 24px; }
.langs button {
  font: inherit; font-size: 14px; color: var(--ink); background: var(--panel);
  border: 2px solid var(--line); border-radius: 8px; padding: 4px 12px; cursor: pointer;
}
.langs button[aria-pressed="true"] { border-color: var(--gold); color: var(--gold); }
h1 { font-size: 26px; line-height: 1.3; margin: 0 0 6px; color: var(--gold); }
h2 { font-size: 18px; margin: 28px 0 8px; }
p, li { color: var(--ink); }
.muted { color: var(--muted); font-size: 14px; }
a { color: var(--gold); }
ul { padding-left: 22px; }
.cards { display: grid; gap: 12px; margin-top: 20px; }
.card {
  display: block; background: var(--panel); border: 2px solid var(--line); border-radius: 12px;
  padding: 14px 16px; color: var(--ink); text-decoration: none;
}
.card:hover { border-color: var(--gold); }
.card strong { display: block; color: var(--gold); }
footer { margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
[data-lang] { display: none; }
html[lang="vi"] [data-lang="vi"],
html[lang="en"] [data-lang="en"],
html[lang="zh-Hans"] [data-lang="zh-Hans"] { display: block; }