@charset "utf-8";

.flow_design09 {
  margin: 0 auto;
  padding: 2em;
  background: #fff;
  box-shadow: 2px 2px 4px gray;
  display: flex;
  justify-content: center;
  align-items: center;
}

.flow09 {
  width: 100%;
  padding-left: 0;
}

.flow09 > li {
  list-style-type: none;
  display: flex;
  padding: 20px 0;
}

.flow09 > li dl dt {
  font-size: 1.2em;
  color: #000;
  line-height: 2;
  font-weight: bold;
  margin-bottom: 10px;
}

.flow09 > li .icon09 {
  line-height: 1;
  font-size: 2em;
  font-weight: bold;
  color: #E26B5D;
  text-align: center;
  width: 70px;
  position: relative;
  margin-top: 0;
}

.flow09 > li .icon09::before {
  content: 'STEP';
  font-size: 0.3em;
  display: block;
  margin-bottom: 3px;
  letter-spacing: 1px;
}

.flow09 > li .icon09::after {
  content: "";
  display: block;
  width: 1px;
  height: calc(100% - 40px);
  background-color: #858585;
  position: absolute;
  left: 0;
  right: 0;
  top: 60px;
  margin: auto;
}

.flow09 > li dl dd {
  color: #000;
  margin: 0;
}

.flow09 > li dl {
  width: calc(100% - 70px);
  margin-top: 0.8em;
}

a.btn_02 {
	display: block;
	text-align: center;
	vertical-align: middle;
	text-decoration: none;
	margin: auto;
	padding: 1rem 4rem;
	font-weight: bold;
	border: 2px solid #27acd9;
	background: #27acd9;
	color: #fff;
	transition: 0.5s;
}
a.btn_02:hover {
	color: #27acd9;
	background: #fff;
}
li.phone {
	padding: 0;
	border: none;
	color: #000;
}
li.phone a {
	margin: 0 auto;
	color: #000;
	font-size: 2em;
	font-weight: bold;
	text-decoration: none;
}
li.phone a img {
	width: 55px;
}
li.phone div {
	margin: 0 auto;
}

    .oil-buttons {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      max-width: 800px;
      margin: auto;
    }

    .oil-buttons a {
      display: flex;
      align-items: center;
      justify-content: center;
      height: 70px;
      color: #fff;
      font-size: 1.5em;
      font-weight: bold;
      text-decoration: none;
      padding: 0 1em;
      border-radius: 12px;
      box-shadow: 0 4px 8px rgba(0,0,0,0.15);
      transition: transform 0.2s, opacity 0.3s;
    }

    .oil-buttons a:hover {
      transform: translateY(-3px);
      opacity: 0.9;
    }

    /* 各ボタンの色 */
    .btn-engine { background: linear-gradient(to bottom, #f36d94, #e91e63); }
    .btn-car    { background: linear-gradient(to bottom, #ffb347, #ff5722); }
    .btn-indust { background: linear-gradient(to bottom, #b388eb, #7e57c2); }
    .btn-ship   { background: linear-gradient(to bottom, #64b5f6, #3f51b5); }
    .btn-crude  { background: linear-gradient(to bottom, #4dd0e1, #00796b); }
    .btn-grease { background: linear-gradient(to bottom, #aed581, #689f38); }

@media screen and (max-width:480px){
    .oil-buttons {
      grid-template-columns: repeat(2, 1fr);
    }
    .oil-buttons a {
      font-size: 1.4em;
    }

}