:root {
  --bg: #ffffff; --fg: #1c1f24; --muted: #5d6470; --line: #e3e5e9;
  --card: #f6f7f9; --accent: #c45e00; --accent-strong: #ff7a00;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0d0f12; --fg: #eef0f3; --muted: #a2a9b4; --line: #262a31;
          --card: #171a1f; --accent: #ff8f2b; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
       font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 32px 16px 64px; }
header { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; }
header img { width: 64px; height: 64px; border-radius: 15px; }
header a { color: inherit; text-decoration: none; }
header .name { font-weight: 700; font-size: 22px; line-height: 1.2; }
header .tag { color: var(--muted); font-size: 15px; }
h1 { font-size: 30px; line-height: 1.2; margin: 8px 0 4px; }
h2 { font-size: 20px; margin: 32px 0 8px; }
p, li { color: var(--fg); }
.muted { color: var(--muted); font-size: 15px; }
a { color: var(--accent); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin: 16px 0; }
.card strong { color: var(--accent-strong); }
nav { display: flex; gap: 20px; flex-wrap: wrap; margin: 8px 0 0; }
footer { border-top: 1px solid var(--line); margin-top: 48px; padding-top: 16px; color: var(--muted); font-size: 14px; }
ul { padding-left: 22px; }