body {
  margin: 0;
  font-family: 'Noto Sans JP', sans-serif;
  background: #ffffff;
  color: #0f2b46;
  line-height: 1.8;
}

.z-header {
  background: #0f2b46;
  color: white;
  padding: 20px;
  text-align: center;
}

.hero img {
  width: 100%;
  max-width: 380px;   /* 好きな幅に調整できる */
  height: auto;
  margin: 0 auto;     /* 中央寄せ */
  display: block;
}

.content {
  max-width: 860px;
  margin: 40px auto;
  padding: 0 20px;
}

.content h2 {
  font-size: 26px;
  margin-bottom: 15px;
}

.content h3 {
  font-size: 22px;
  margin-top: 35px;
}

ul {
  padding-left: 20px;
}



.z-back {
  margin:40px auto;
  text-align:center;
}
.z-cta a {
  display:inline-block;
  padding:12px 26px;
  font-size:16px;
  background:#0f2b46;
  color:white;
  border-radius:999px;
  text-decoration:none;
}
.z-cta a:hover {
  background:#154069;
}