:root {
  color: #1f2937;
  background: #fcfaf6;
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  line-height: 1.75;
}

* { box-sizing: border-box; }
body { margin: 0; }
header { background: #f7f1e8; border-bottom: 1px solid #dbe3ee; }
header, main, footer { padding: 20px max(20px, calc((100% - 760px) / 2)); }
main { min-height: calc(100vh - 180px); padding-top: 40px; padding-bottom: 56px; }
h1 { margin: 0 0 24px; font-size: 30px; line-height: 1.4; }
h2 { margin: 36px 0 10px; font-size: 21px; line-height: 1.5; }
p, li { font-size: 16px; }
a { color: #175ec4; }
nav { display: flex; flex-wrap: wrap; gap: 18px; }
nav a { color: #263449; font-weight: 700; }
.brand { margin: 0 0 12px; font-size: 20px; font-weight: 800; }
.updated { color: #64748b; font-size: 14px; }
footer { border-top: 1px solid #dbe3ee; color: #64748b; font-size: 13px; }