@charset "UTF-8";

:root{
  --blue:#009914;
  --blue2:#007810;
  --line:#c8dfc8;
  --pale:#f5faf5;
  --text:#111827;
  --green:#087319;
}

body {
  line-height: 1.85;
}

.section{
  width:min(1120px,94%);
  margin:0 auto;
}

.whitening-page{
  padding-top:26px;
}

.page-title h1{
  margin:0;
  color:var(--blue);
  font-family:"Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:clamp(32px,4vw,42px);
  font-weight:700;
  line-height:1.1;
  letter-spacing:.06em;
}

.page-title>p{
  margin:6px 0 8px 36px;
  color:var(--blue);
  font-family:"Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:18px;
  letter-spacing:.10em;
}

.title-line{
  width:470px;
  max-width:100%;
  height:1px;
  background:var(--blue);
  margin:12px 0 22px;
}

.lead p{
  margin:5px 0;
  font-size:16px;
  font-weight:400;
}

.flow{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:14px;
  margin-top:28px;
}

.flow-box{
  border:1px solid var(--blue);
  border-radius:5px;
  padding:20px 20px 26px;
}

.flow-box h2{
  background:linear-gradient(90deg,#0d4f8f,#1a6cb8);
  color:#fff;
  text-align:center;
  font-family:"Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:18px;
  letter-spacing:.08em;
  margin:0 0 26px;
  padding:7px 10px;
  border-radius:4px;
}

.step-grid{
  display:grid;
  gap:14px;
}

.step-grid.office{
  grid-template-columns:repeat(4,minmax(0,1fr));
}

.step-grid.home{
  grid-template-columns:repeat(3,minmax(0,1fr));
}

.step-grid div{
  position:relative;
  background:#f4f7fb;
  text-align:center;
  padding:16px 10px 12px;
  min-height:180px;
  min-width:130px;
}

.step-grid div:not(:last-child)::after{
  content:"▶";
  position:absolute;
  right:-16px;
  top:45%;
  color:#1a6cb8;
  font-size:22px;
  z-index:2;
}

.step-grid span{
  width:28px;
  height:28px;
  border-radius:50%;
  background:#1a6cb8;
  color:#fff;
  display:grid;
  place-items:center;
  margin:0 auto 10px;
  font-weight:700;
  font-size:15px;
}

.step-grid h3{
  color:#0d4f8f;
  font-size:14px;
  margin:0 0 12px;
  line-height:1.45;
}

.step-grid p{
  margin:0;
  font-size:13px;
  font-weight:400;
  line-height:1.75;
}

.before-after{
  display:grid;
  grid-template-columns:minmax(0,1fr) 44px minmax(0,1fr);
  gap:18px;
  align-items:center;
  margin-top:42px;
}

.photo-card{
  position:relative;
}

.photo-card span{
  position:absolute;
  left:10px;
  top:10px;
  background:#002366;
  color:#fff;
  font-family:Georgia,serif;
  font-size:19px;
  padding:3px 13px;
  z-index:2;
}

.photo-card img{
  width:100%;
  height:245px;
  object-fit:cover;
  border-radius:5px;
}

.photo-card p{
  margin:8px 0 0;
  font-size:15px;
  font-weight:600;
}

.center-arrow{
  color:var(--blue2);
  font-size:42px;
  text-align:center;
}

.price{
  margin-top:30px;
}

.price-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:10px;
}

.price-grid article{
  border:1px solid var(--blue);
  border-radius:4px;
  padding:22px 18px;
  min-height:375px;
}

.price-grid h2{
  margin:0 0 14px;
  color:var(--blue);
  font-family:"Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:18px;
}

.amount{
  color:var(--blue);
  font-family:"Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:32px;
  line-height:1.15;
  margin:0 0 18px;
}

.amount.small{
  font-size:26px;
}

.amount span{
  font-size:15px;
  margin-left:4px;
}

.price-grid p:not(.amount){
  margin:10px 0;
  font-size:14px;
  font-weight:400;
}

.powder{
  margin-top:24px;
  border:1px solid var(--blue);
  border-radius:5px;
  display:grid;
  grid-template-columns:36% 64%;
  align-items:center;
}

.powder-title{
  padding:22px 20px;
  text-align:center;
  border-right:1px solid var(--blue);
}

.powder-title img{
  width:70px;
  height:70px;
  margin:0 auto 8px;
}

.powder-title h2{
  color:var(--blue);
  font-family:"Yu Mincho","Hiragino Mincho ProN",serif;
  font-size:19px;
  line-height:1.45;
  margin:0 0 8px;
}

.powder-title .amount{
  margin-bottom:0;
}

.powder-text{
  padding:22px 34px;
}

.powder-text p{
  margin:8px 0;
  font-size:15px;
  font-weight:400;
}

.site-footer{
  margin-top:28px;
  padding:18px 16px 22px;
  text-align:center;
  color:#fff;
  background:linear-gradient(90deg,#86b94d,#117d1b);
}

.site-footer p{
  margin:3px 0;
  font-size:16px;
  font-weight:700;
}

@media(max-width:900px){
  .flow,
  .price-grid,
  .powder{
    grid-template-columns:minmax(0,1fr);
  }

  .step-grid.office,
  .step-grid.home{
    grid-template-columns:minmax(0,1fr);
  }

  .step-grid div:not(:last-child)::after{
    content:"▼";
    right:50%;
    top:auto;
    bottom:-22px;
    transform:translateX(50%);
  }

  .before-after{
    grid-template-columns:minmax(0,1fr);
  }

  .center-arrow{
    transform:rotate(90deg);
  }

  .photo-card img{
    height:auto;
  }

  .powder-title{
    border-right:0;
    border-bottom:1px solid var(--blue);
  }
}

@media(max-width:560px){
  .page-title h1{
    font-size:28px;
  }

  .page-title>p{
    margin-left:0;
    font-size:16px;
  }

  .lead p{
    font-size:15px;
  }

  .flow-box{
    padding:16px 14px 22px;
  }

  .flow-box h2{
    font-size:19px;
  }

  .photo-card span{
    font-size:14px;
  }

  .price-grid article{
    min-height:auto;
  }

  .amount{
    font-size:26px;
  }

  .powder-text{
    padding:20px 16px;
  }

  .powder-text p{
    font-size:15px;
  }

  .site-footer p{
    font-size:12px;
  }
}