:root {
  --bg: #ffffff; --fg: #14161c; --muted: #5f636e; --line: #e6e8ee; --card: #f6f7fb;
  --blue: #4069ff; --blue-ink: #2f55e8;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) { --bg: #0f1420; --fg: #e9ecf4; --muted: #9aa1b2; --line: #232a3a; --card: #161d2c; --blue: #6c8cff; --blue-ink: #8aa3ff; }
}
:root[data-theme="dark"] { --bg: #0f1420; --fg: #e9ecf4; --muted: #9aa1b2; --line: #232a3a; --card: #161d2c; --blue: #6c8cff; --blue-ink: #8aa3ff; }
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased; border-top: 6px solid var(--blue);
}
main { max-width: 720px; margin: 0 auto; padding: 48px 16px 64px; }
header { display: flex; align-items: center; gap: 16px; margin-bottom: 32px; }
header img { width: 56px; height: 56px; border-radius: 50%; border: 1px solid var(--line); background: #fff; }
header .name { font-weight: 700; font-size: 1.25rem; letter-spacing: -0.01em; }
header .tag { color: var(--muted); font-size: 0.95rem; }
h1 { font-size: clamp(1.8rem, 5vw, 2.4rem); line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 8px; }
h2 { font-size: 1.2rem; margin: 36px 0 8px; padding-top: 20px; border-top: 1px solid var(--line); }
.updated { color: var(--muted); margin: 0 0 24px; }
a { color: var(--blue-ink); text-underline-offset: 3px; }
code { font: 0.9em ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--card); padding: 1px 6px; border-radius: 5px; border: 1px solid var(--line); }
ul { padding-left: 1.2em; } li { margin: 6px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; margin: 20px 0; }
.features { list-style: none; padding: 0; } .features li { padding-left: 2em; text-indent: -2em; }
footer { margin-top: 48px; color: var(--muted); font-size: 0.9rem; border-top: 1px solid var(--line); padding-top: 16px; }