* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #a90017;
  font-family: "Microsoft YaHei", Arial, sans-serif;
  color: #3d130e;
}

.simple-page {
  width: min(100%, 540px);
  min-height: 100vh;
  margin: 0 auto;
  padding: 28px 20px;
  background: #f9f5ef;
}

h1 {
  margin: 0 0 18px;
  color: #a90017;
  font-size: 24px;
}

p {
  margin: 0 0 14px;
  line-height: 1.7;
  font-size: 16px;
}

a {
  display: inline-flex;
  margin-top: 12px;
  padding: 10px 16px;
  border-radius: 6px;
  background: #a90017;
  color: #fff;
  text-decoration: none;
}