:root {
  color-scheme: light;
  --header: #1c3144;
  --sky: #f3f4f6;
  --ink: #1c2430;
  --muted: #5e6a78;
  --card: #ffffff;
  --line: #e2e6eb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--sky);
  color: var(--ink);
  font: 18px/1.55 "Helvetica Neue", Helvetica, Arial, sans-serif;
}

a { color: var(--header); }

header, main, footer {
  width: min(760px, calc(100% - 40px));
  margin-left: auto;
  margin-right: auto;
}

.top {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 28px 0 8px;
}

.top img {
  width: 48px;
  height: 48px;
  border-radius: 10px;
}

.top strong { font-size: 20px; }

h1 {
  font-size: 36px;
  line-height: 1.2;
  margin: 28px 0 8px;
}

.updated { color: var(--muted); margin-top: 0; }

article {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 28px 20px;
  margin: 24px 0 40px;
}

h2 { font-size: 22px; margin-top: 28px; }

footer {
  color: var(--muted);
  font-size: 15px;
  padding-bottom: 40px;
}