:root { color-scheme: light dark; }
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}
.wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 20px;
}
header {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; gap: 12px; align-items: center; }
.dot {
  width: 14px; height: 14px; border-radius: 50%;
  background: currentColor; opacity: .65;
}
h1 { margin: 0; font-size: 22px; }
.sub { margin: 2px 0 0; opacity: .75; font-size: 14px; }
nav a { margin-left: 14px; text-decoration: none; opacity: .85; }
nav a:hover { opacity: 1; text-decoration: underline; }

main { display: grid; gap: 16px; padding-top: 8px; }
.card {
  border: 1px solid rgba(127,127,127,.35);
  border-radius: 14px;
  padding: 16px;
  background: rgba(127,127,127,.06);
}
.card h2 { margin: 0 0 8px; font-size: 18px; }
.hint { opacity: .75; font-size: 14px; }
.small { opacity: .85; font-size: 14px; }
.sep { padding: 0 8px; opacity: .6; }

.footer { padding-top: 10px; opacity: .8; font-size: 14px; }
.footer a { text-decoration: none; }
.footer a:hover { text-decoration: underline; }