body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Noto Sans JP", sans-serif;
  margin: 0;
  background: #f7f7f7;
  color: #111;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 48px 16px;
}

h1 {
  font-size: 28px;
  margin-bottom: 16px;
}

p {
  line-height: 1.9;
  font-size: 15px;
  color: #333;
}

.tool {
  margin-top: 48px;
  padding: 24px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .05);
}

.tool h2 {
  margin-top: 0;
  font-size: 20px;
}

.tool ul {
  margin: 16px 0;
  padding-left: 18px;
  font-size: 14px;
  color: #444;
}

.tool a {
  display: inline-block;
  margin-top: 12px;
  padding: 12px 20px;
  background: #111;
  color: #fff;
  border-radius: 999px;
  text-decoration: none;
  font-size: 14px;
}

.tool a:hover {
  opacity: .85;
}

/* footer */
.footer {
  margin: 40px 0 20px;
  text-align: center;
}

.footer-link {
  font-size: 13px;
  color: #666;
  text-decoration: none;
}

.footer-link:hover {
  text-decoration: underline;
  color: #111;
}