:root {
  font-family: Arial, Helvetica, sans-serif;
  color: #1f2937;
  background: #f7f7f8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  line-height: 1.6;
}

header {
  background: #fff;
  border-bottom: 1px solid #e5e7eb;
}

.header-inner,
main,
footer {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto;
}

.header-inner {
  padding: 18px 0;
}

.brand {
  color: #ff4f12;
  text-decoration: none;
  font-size: 26px;
  font-weight: 800;
}

main {
  background: #fff;
  margin-top: 28px;
  margin-bottom: 28px;
  padding: 32px;
  border-radius: 14px;
  box-shadow: 0 4px 24px rgba(0,0,0,.05);
}

h1,
h2 {
  line-height: 1.25;
}

h1 {
  margin-top: 0;
}

a {
  color: #d83b08;
}

.notice {
  padding: 16px;
  border-radius: 10px;
  background: #fff4ef;
  border: 1px solid #ffd3c4;
}

footer {
  padding: 0 0 30px;
  font-size: 14px;
}

footer a {
  margin-right: 14px;
}

.button {
  display: inline-block;
  padding: 12px 18px;
  background: #ff4f12;
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 700;
}

@media (max-width: 600px) {
  main {
    padding: 22px;
  }
}