@charset "UTF-8";

/*----------------------------------------
	header
----------------------------------------*/
.round-bottom {
  position: relative;
  width: 100%;
  background-color: var(--blue);
  margin-bottom: 13rem;
}
.round-bottom::after {
  content: "";
  position: absolute;
  bottom: -5rem;
  left: 0;
  width: 100%;
  height: 10rem;
  background-color: var(--blue);
  clip-path: ellipse(60% 100% at 50% 0);
  z-index: -1;
}
h1{
  color: var(--white);
  font-weight: 600;
  font-size: min(10vw,3.4rem);
  line-height: 1.35;
}
h1 strong{
  font-weight: inherit;
  background:linear-gradient(transparent 85%, rgba(255,230,126,.8) 85%);
  margin-bottom: .1em;
  display: inline-block;
}
header figure{
  width: 90%;
  max-width: 380px;
  text-align: center;
  margin: auto;
}
.header-container{
  display: flex;
  flex-direction: column;
  width: min(90%,900px);
  margin: auto auto -5rem;
  row-gap:1rem;
  padding-top: 3rem;
  text-align: center;
}
.header-btn{
  text-align: center;
  max-width: 26em;
  margin: 2rem auto;
}


/*----------------------------------------
	main
----------------------------------------*/
main{
  margin:3rem auto;
  width: min(90%,900px);
  counter-reset: section; /* カウンターをリセット */
}
main h2{
  font-size: min(6.15vw,2.6rem);
  margin-top: 6rem;
  line-height: 1.4;
  display: flex;
  gap:.175em;
  font-weight: 600;
}
main h2::before{
  color: var(--blue);
  font-size: 1.25em;
  counter-increment: section;
  content: counter(section)".";
  font-weight: 500;
  transform: translateY(-.175em);
}
main > section{
  padding-top: .1rem;
}
main p{
  line-height: 1.8;
  margin-top: 1em;
  text-align: justify;
}
main figure{
  margin: 2rem auto 0;
  width: 100%;
  max-width: 64rem;
}
figcaption{
  font-weight: 400;
  font-size: 1.6rem;
  margin-top: .25em;
}

/* ①フィルター清掃が大切な理由 */
#reason{
  padding-top: 0;
}
#reason h2{
  padding-top: 1rem;
}
#reason section:not(:first-of-type){
  margin-top: 3.5rem;
}
#reason h3 {
  display: flex;
  align-items: flex-start;
  gap: .25em;
  border: 2px solid var(--blue);
  border-radius: 1rem;
  padding:.25em .5em .25em .75em;
  margin-top: 1rem;
  font-weight: 600;
  font-size: min(5.12vw,2rem);
}
#reason h3::before {
  content: url(../img/icon_check-blue.svg);
  width: 1em;
  height: auto;
  flex-shrink: 0;
  margin-top: .1em;
  font-size: .95em;
  padding-top: .15em;
}
#reason figure{
  max-width: 50rem;
}

/* ②掃除の頻度と目的に応じた目安 */
#hindo figure{
  max-width: 50rem;
}

/* ③フィルター掃除の具体的な手順 */
#flow figure{
  width: min(90%,32rem);
  flex-shrink:0;
  align-self: center;
}
.flow-list{
  counter-reset: section; /* カウンターをリセット */
  margin-top: 1em;
  display: flex;
  flex-direction: column;
  gap:1.25em;
  font-size: 1.85rem;
  margin-top: 3rem;
}
.flow-list li{
  display: flex;
  gap:.5em;
  position: relative;
}
.flow-list li::before{
  content: "";
  counter-increment: section;
  content:counter(section);
  background: var(--blue);
  color: var(--white);
  border-radius: 50%;
  padding:.5em;
  width: 2em;
  height: 2em;
  line-height:1;
  flex-shrink: 0;
  text-align: center;
  transform: translateY(-.15em);
}
.flow-list li::after{
  content:"";
  position: absolute;
  background: var(--blue-op50);
  top:1.5em;
  left: calc(1em);
  height: 100%;
  width: 2px;
}
.flow-list li:last-child::after{
  background: none;
}

/* ④フィルター掃除だけでは不十分なケース */
#case figure{
  width: min(85%,28rem);
  flex-shrink:0;
}


/* ⑤「おそうじナビ」で叶える安心サポート */
#feature .feature-container {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap:6rem 3rem;
  margin-top: 3rem;
  margin-bottom: 6rem;
}
#feature section{
  margin-left: auto;
  margin-right: auto;
  flex: 1;
}
.feature-head{
  text-align: center;
}
.feature-head img{
  width: 50%;
  max-width: 200px;
}
.feature-head h3{
  font-size: min(5.6vw,2.4rem);
  color: var(--navy);
  margin-top: 0.25em;
  line-height: 1.45;
}


/* 強調 */
strong,
.strong {
  font-weight: 700;
  background: linear-gradient(transparent 75%, var(--yellow) 75%);
}

/* ボタン */
.btn-wrap{
  text-align: center;
  max-width: 26em;
  margin: 6rem auto;
}

/* 他 */
.pb6rem{
  padding-bottom: 6rem;
}


/*----------------------------------------
	その他
----------------------------------------*/
.wide{
  margin-left: calc(50% - 50vw);
  margin-right: calc(50% - 50vw);
  padding-left: calc(50vw - 50%);
  padding-right: calc(50vw - 50%);
}
.bg-lightgray{
  background: var(--lightgray);
}

.btn01{
  color: var(--white);
  display: block;
  padding: .7em 2.5em;
  border-radius: 1.5em;
  font-size: 1.05em;
  text-decoration: none;
  background:var(--navy);
}
.btn01.bg-blue{
  background:var(--blue);
}
.upper {
  text-transform: uppercase;
}
.nowrap{
  white-space: nowrap;
}

/* flex */
.col2-container {
  display: flex;
  flex-direction: column;
  gap:1.5rem 3rem;
}

/* 表示・非表示 */
.sp-none{
  display: none;
}


/*----------------------------------------
	タブレット　768px以上
----------------------------------------*/
@media (min-width: 768px) {

  .header-container{
    flex-direction: row;
    text-align: left;
    justify-content: space-between;
  }
  h1{
    text-align: left;
  }
  .header-btn{
    text-align:left;
  }
  .header-container .btn01{
    display: inline-block;
  }
  header figure{
    width: 35%;
    max-width: 400px;
  }

  /* ③フィルター掃除の具体的な手順 */
  #flow .flow-list{
    margin-bottom: 6rem;
  }
  /* ④フィルター掃除だけでは不十分なケース */
  #case .text{
    padding-bottom: 6rem;
  }

  /* ⑤「おそうじナビ」で叶える安心サポート */
  #feature .feature-container {
    flex-direction: row;
  }
  #feature p{
    display: inline-block;
  }
  
  /* flex */
  .col2-container {
    flex-direction: row;
  }

  /* 他 */
  br.sp-none{
    display: inline-block;
  }


}

/*----------------------------------------
	PC　960px以上
----------------------------------------*/
@media (min-width: 960px) {
  header figure{
    width: 40%;
  }



}

/*----------------------------------------
	オンマウス
----------------------------------------*/
@media (hover: hover) {
  a{
    transition: .2s;
  }
  a:hover{
    opacity: .85;
  }
  
}