body {
  margin: 0;
  font-size: 16px;
  font-family: 'M PLUS Rounded 1c', sans-serif;
  color: #333;
}

p {
  line-height: 1.8;
}

/* header-------------------------------------------
 */

header h1,
header p {
  margin: 0;
}

header {
  height: 220px;
  background: center/cover url(../img/h_header.png);
}

header a {
  display: block;
  height: 220px;
}

/* main-------------------------------------------
 */

.container {
  margin: 0 12px;
}

.container section {
  padding-bottom: 12px;
}

section > h1 {
  text-align: center;
  border-left: 5px solid #f89174;
  border-bottom: 3px solid #dadada;
  background: #f7f7f7;
  padding: 14px 12px;
  font-size: 18px;
}

.features {
  border: 2px solid #f89174;
  background: #fffbf4;
}

.features h2 {
  background: #f89174;
  color: #fff;
  font-size: 17px;
  text-align: center;
  padding: 8px 0;
  margin: 0;
}

.features ul {
  list-style: none;
  padding: 0;
}

.features ul li {
  background: url("../img/star.svg") left 10px top 8px no-repeat;
  background-size: 15px
}

.features ul li {
  padding: 5px 10px 5px 35px;
}

section h3 {
  border-left: 5px solid #73bcf3;
  padding: 10px 12px;
  font-size: 18px;
}

.btn {
  text-decoration: none;
  background: #f89174;
  color: #fff;
  display: block;
  width: 150px;
  line-height: 44px;
  border-radius: 4px;
  text-align: center;
  margin: 12px auto;
  font-size: 14px;
}

.btn:hover {
  opacity: 0.9;
}

.important {
  color: #f89174;
  font-weight: bold;
  padding: 0 3px;
}

.flow section {
  border: 1px solid #999;
  margin-bottom: 25px;
  padding: 15px;
  position: relative;
  border-radius: 4px;
}

.flow section .pic {
  border: 1px dashed #999;
}


.flow section:not(:last-child):before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -20px;
  margin-left: -10px;
  border: 10px solid transparent;
  border-top: 10px solid #999;
}

.flow img {
  width: 100%;
}

.center {
  text-align: center;
}

.entry {
  display: block;
  width: 320px;
  height: 250px;
  margin: 0 auto 12px;
}

.caution {
  font-size: 14px;
  color: #ff3333;
}

.underline {
  /* text-decoration: underline;
  text-decoration-style: wavy;
  text-decoration-color: #eb6060; */
  background: linear-gradient(transparent 70%, #a8eaff 50%);
}

/* nav-------------------------------------------
 */

nav {
  margin-bottom: 15px;
}

nav h1 {
  color: #fff;
  background: #f89174;
  font-size: 16px;
  margin: 0;
  padding: 8px 14px;
}

nav ol {
  border: 1px solid #f89174;
  color: #544e4e;
  margin: 0;
}

nav ol li {
  padding: 8px 0;
}

nav ol li a {
  color: #544e4e;
  text-decoration: none;
}

nav ol li a:hover {
  opacity: 0.8;
}

.disable {
  display: none;
  width: 200px;
  height: 80px;
}

/* footer-------------------------------------------
 */

footer {
  background: #f89174;
  color: #fff;
  text-align: center;
  padding: 64px 0;
}

/* @media-------------------------------------------
 */

@media (min-width: 900px) {

  body {
    font-family: 'Noto Sans JP', sans-serif;
  }

  header {
    height: 220px;
    background: center/cover url(../img/h_header.png);
    background-size: 900px;
    background-repeat: no-repeat;
  }

  header a {
    width: 900px;
    margin: 0 auto;
  }

  .container {
    width: 900px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
  }

  .main {
    flex: 1;
  }

  .nav {
    font-size: 14px;
    width: 200px;
    margin-top: 15px;
    margin-left: 15px;
  }

  .nav ol {
    padding-left: 25px;
  }

  .nav__item {
    position: sticky;
    top: 10px;
  }

  .disable {
    display: block;
  }

  .flow section {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .flow section .pic {
    border: none;
  }

  .pic {
    width: 40%;
  }

  .info {
    width: calc(60% - 32px);
  }
}