body {
  margin: 0;
  padding: 0 16px;
  background: #f4efe4;
  color: #1a1a1a;
  font-family: "Yu Mincho", "游明朝", "Hiragino Mincho ProN", serif;
  line-height: 1.8;
}
main {
  max-width: 720px;
  margin: 40px auto;
}
h1 { border-bottom: 2px solid #c8553d; padding-bottom: 8px; }
h2 { font-size: 1.15em; margin-top: 2em; }
a { color: #a8432e; }
code {
  font-size: 0.85em;
  background: #ebe3d3;
  padding: 1px 4px;
  word-break: break-all;
}
.download {
  display: inline-block;
  padding: 10px 20px;
  background: #c8553d;
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
}
.download:hover { background: #a8432e; }
.note { font-size: 0.9em; color: #555; }