* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: #fff;
  color: #333;
  font-family: -apple-system, "Segoe UI", "Microsoft YaHei", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  font-size: 15px;
  line-height: 1.8;
}

.wrap {
  max-width: 680px;
  margin: 0 auto;
  padding: 28px 16px 44px;
}

h1 {
  margin: 0 0 4px;
  font-size: 22px;
  font-weight: 600;
  color: #000;
}

h2 {
  margin: 28px 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: #222;
}

p {
  margin: 0 0 8px;
}

.lead {
  color: #555;
}

nav {
  margin: 18px 0 0;
}

nav a {
  color: #333;
  text-decoration: none;
  border-bottom: 1px solid #ccc;
}

nav a:hover {
  border-bottom-color: #333;
}

.scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

th,
td {
  border: 1px solid #ddd;
  padding: 6px 8px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #f7f7f7;
  font-weight: 400;
  color: #555;
}

td.kana {
  font-size: 16px;
}

footer {
  margin-top: 40px;
  padding-top: 10px;
  border-top: 1px solid #ddd;
  font-size: 13px;
  color: #999;
}

footer p {
  margin: 0 0 2px;
}

@media (max-width: 480px) {
  body { font-size: 14px; }
  h1 { font-size: 20px; }
  table { font-size: 13px; }
  th,
  td { padding: 5px 6px; }
  td.kana { font-size: 14px; }
}
footer .beian { font-size: 13px; margin-top: 6px; }
footer .beian a { color: #999; text-decoration: none; }
footer .beian a:hover { text-decoration: underline; }