:root {
  --brand: #1f6bff;
  --text: #14161a;
  --muted: #5d6470;
  --line: #e4e7ec;
  --bg: #f5f6f8;
  --card: #ffffff;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --text: #f2f3f5; --muted: #a0a6b0; --line: #2a2e35; --bg: #0f1114; --card: #181b20; --brand: #4d8cff; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); }
header { max-width: 760px; margin: 0 auto; padding: 28px 20px 0; display: flex; align-items: center; gap: 12px; }
header a.home { display: flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; font-weight: 700; font-size: 20px; }
header img { width: 40px; height: 40px; border-radius: 10px; }
main { max-width: 760px; margin: 0 auto; padding: 8px 20px 40px; }
article { background: var(--card); border: 1px solid var(--line); border-radius: 22px; padding: 8px 32px 28px; margin-top: 20px; }
h1 { font-size: 34px; line-height: 1.15; margin: 28px 0 4px; }
h2 { font-size: 21px; margin: 32px 0 6px; }
.updated { color: var(--muted); font-size: 15px; margin: 0 0 8px; }
ul { padding-left: 22px; }
li { margin: 6px 0; }
footer { max-width: 760px; margin: 0 auto; padding: 0 20px 40px; color: var(--muted); font-size: 15px; display: flex; flex-wrap: wrap; gap: 18px; }
footer a { color: var(--muted); }
.hero { text-align: center; padding: 56px 0 24px; }
.hero img { width: 112px; height: 112px; border-radius: 26px; box-shadow: 0 16px 40px rgba(31, 107, 255, .25); }
.hero h1 { font-size: 40px; margin-top: 22px; }
.hero p { color: var(--muted); font-size: 19px; max-width: 520px; margin: 8px auto 26px; }
.button { display: inline-block; background: var(--brand); color: #fff; text-decoration: none; font-weight: 600; padding: 13px 26px; border-radius: 999px; }
@media (max-width: 560px) { article { padding: 4px 18px 20px; } h1 { font-size: 28px; } }