@charset "utf-8";

/* 石油給湯器 */
#ser5-1 .ser-imgs img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  box-shadow: none;
}

/* 石油ストーブ */
#ser5-2 .stove-imgs {
  gap: 16px;
}

#ser5-2 .stove-imgs img {
  width: calc(33.333% - 11px);
}

@media screen and (max-width: 600px) {
  #ser5-2 .stove-imgs {
    gap: 8px;
  }

  #ser5-2 .stove-imgs img {
    /* width: calc(33.333% - 3px); */
    width: calc(50% - 4px);
  }
}

/* こんな症状があれば危険信号 */
#ser5-3 .ser-bg-color::before {
  background-color: #f8fcff;
}

#ser5-3 .ser-ttl-wave {
  padding-top: 16px;
  padding-bottom: 40px;
}

#ser5-3 .tank-steps {
  gap: 40px;
}

#ser5-3 .tank-steps ul {
  width: calc(50% - 20px);
}

#ser5-3 .tank-steps ul li {
  padding-bottom: 24px;
}

#ser5-3 .step-hd {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-bottom: 20px;
  background-color: #f7f7f7;
}

#ser5-3 .step-hd .step-num {
  font-size: var(--fs-lg);
  font-family: var(--font-jost);
  background-color: var(--color-blue-dark);
  color: var(--color-white);
  width: 43px;
  height: 43px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  letter-spacing: -0.04em;
}

#ser5-3 .step-hd h4 {
  font-weight: 600;
  letter-spacing: 0.14em;
}

#ser5-3 .step-content p {
  font-weight: 400;
  text-indent: -1.3em;
  padding-left: 1.3em;
}

#ser5-3 .step-content p::before {
  content: "▶";
  margin-right: 4px;
  color: var(--color-blue-dark);
}

#ser5-3 .step-content .blue-txt {
  font-weight: 500;
  color: var(--color-blue-dark);
}

#ser5-3 .tank-img {
  width: calc(50% - 20px);
  max-width: 500px;
}

@media screen and (max-width: 960px) {
  #ser5-3 .tank-steps {
    gap: 24px;
  }

  #ser5-3 .tank-steps ul {
    width: calc(60% - 12px);
  }

  #ser5-3 .tank-img {
    width: calc(40% - 12px);
  }
}

@media screen and (max-width: 768px) {
  #ser5-3 .tank-steps {
    flex-direction: column-reverse;
    gap: 24px;
    position: relative;
  }

  #ser5-3 .tank-steps ul {
    width: 100%;
  }

  #ser5-3 .tank-img {
    position: absolute;
    top: 50%;
    right: 5%;
    width: 100%;
    max-width: 150px;
  }
}

@media screen and (max-width: 600px) {
  #ser5-3 .step-hd {
    gap: 16px;
  }

  #ser5-3 .step-hd .step-num {
    width: 36px;
    height: 36px;
  }

  #ser5-3 .tank-img {
    position: absolute;
    transform: translateY(-25%);
    right: 5%;
    width: 100%;
    max-width: 88px;
  }
}

@media screen and (max-width: 480px) {
  .ser3-imgs {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
  .ser3-img {
    width: 100%;
    height: 200px;
    max-width: 100%;
  }
  #ser5-3 .tank-img {
    top: 40%;
  }
}