.key {
  position: relative;
  height: 550px;
  background: url(../images/perio/key.png) center top -200px/cover no-repeat;
}

.key:before {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 50%;
  height: 3.9vw;
  background: url(../images/common/key_bg.png) center/cover no-repeat;
}

.key:after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: 50%;
  height: 3.9vw;
  -webkit-transform: rotateY(180deg);
          transform: rotateY(180deg);
  background: url(../images/common/key_bg.png) center/cover no-repeat;
}

.key .inner {
  width: 1280px;
  margin: 0 auto;
}

.key .key_text {
  position: relative;
  padding-top: 300px;
  padding-left: 20px;
  font-size: 30px;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: .07em;
}

.key .key_text:before {
  content: "MEDICAL";
  position: absolute;
  top: 200px;
  left: 20px;
  font-size: 70px;
  letter-spacing: .05em;
}

@media screen and (max-width: 768px) {
  .key {
    position: relative;
    height: 97.2vw;
    background: url(../images/perio/key.png) center top/cover no-repeat;
  }
  .key:before {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 50%;
    height: 3.9vw;
    background: url(../images/common/key_bg.png) center/cover no-repeat;
  }
  .key:after {
    content: "";
    position: absolute;
    right: 0;
    bottom: -1px;
    width: 50%;
    height: 3.9vw;
    -webkit-transform: rotateY(180deg);
            transform: rotateY(180deg);
    background: url(../images/common/key_bg.png) center/cover no-repeat;
  }
  .key .inner {
    width: 100%;
    margin: 0 auto;
  }
  .key .key_text {
    position: relative;
    padding-top: 55.5vw;
    padding-left: 5.5vw;
    font-size: 8.3vw;
    color: rgba(255, 255, 255, 0.9);
    letter-spacing: .07em;
  }
  .key .key_text:before {
    content: "MEDICAL";
    position: absolute;
    top: 33.3vw;
    left: 5.5vw;
    width: 90%;
    font-size: 13.8vw;
    letter-spacing: .05em;
  }
}

.sec01 {
  padding: 80px 0;
}

.sec01 .inner {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}

.sec01 .sec_header {
  position: relative;
  padding-right: 50px;
  margin-right: 50px;
}

.sec01 .sec_header:before {
  content: "";
  position: absolute;
  top: -80px;
  right: 0;
  width: 1px;
  height: 390px;
  background: #bf7e80;
}

.sec01 .sec_title {
  position: relative;
  width: 200px;
  padding: 100px 0 60px;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  font-family: "noto serif jp", serif;
  font-size: 33px;
  font-weight: 500;
  letter-spacing: .2em;
}

.sec01 .sec_title:before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  width: 84px;
  height: 70px;
  margin: 0 auto;
  background: url(../images/perio/icon_perio.png) center/contain no-repeat;
}

.sec01 .sec_title:after {
  content: "perio";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0 auto;
  font-size: 28px;
  color: #bf7e80;
  text-align: center;
}

.sec01 .textbox {
  width: 600px;
}

.sec01 .lead_text {
  margin-bottom: 30px;
  font-family: "noto serif jp", serif;
  font-size: 28px;
  font-weight: 600;
  color: #bf7e80;
  line-height: 1.8;
  letter-spacing: .2em;
}

@media screen and (max-width: 768px) {
  .sec01 {
    padding: 22.2vw 5.5vw;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
  }
  .sec01 .inner {
    display: block;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
  }
  .sec01 .sec_header {
    position: relative;
    padding-right: 0;
    margin-right: 0;
    padding-bottom: 5.5vw;
    margin-bottom: 5.5vw;
  }
  .sec01 .sec_header:before {
    content: "";
    position: absolute;
    top: auto;
    bottom: 0;
    right: 0;
    width: 100%;
    height: 1px;
    background: #bf7e80;
  }
  .sec01 .sec_title {
    position: relative;
    width: 100%;
    padding: 22.2vw 0 11.1vw;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
    font-family: "noto serif jp", serif;
    font-size: 6.9vw;
    font-weight: 500;
    letter-spacing: .2em;
    text-align: center;
  }
  .sec01 .sec_title:before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    width: 23.3vw;
    height: 19.4vw;
    margin: 0 auto;
    background: url(../images/perio/icon_perio.png) center/contain no-repeat;
  }
  .sec01 .sec_title:after {
    content: "perio";
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    margin: 0 auto;
    font-size: 5.5vw;
    color: #bf7e80;
    text-align: center;
  }
  .sec01 .textbox {
    width: 100%;
  }
  .sec01 .lead_text {
    margin-bottom: 8.3vw;
    font-family: "noto serif jp", serif;
    font-size: 5.5vw;
    font-weight: 600;
    color: #bf7e80;
    line-height: 1.8;
    letter-spacing: .2em;
  }
}

.sec02 {
  padding: 50px 0 100px;
  background: #fcf9f2;
}

.sec02 .sec_title {
  position: relative;
  z-index: 2;
  width: 1210px;
  padding: 20px 0;
  margin: 0 auto 50px;
  border-radius: 20px;
  background: #ce807d;
  font-size: 35px;
  color: #fff;
  letter-spacing: .1em;
  text-align: center;
}

.sec02 .sec_text {
  width: 830px;
  margin: 0 auto 80px;
}

.sec02 .cont {
  width: 1150px;
  margin: 0 auto;
}

.sec02 .cont_title {
  padding-bottom: 10px;
  border-bottom: 1px solid #bf7e80;
  margin-bottom: 30px;
  font-size: 30px;
  font-weight: 500;
  letter-spacing: .2em;
  color: #bf7e80;
  text-align: center;
}

.sec02 .cont01 {
  margin-bottom: 100px;
}

.sec02 .cont01 .list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

.sec02 .cont01 .item {
  width: 240px;
}

.sec02 .cont01 .item_title {
  position: relative;
  width: 230px;
  height: 40px;
  padding-left: 20px;
  margin-bottom: 20px;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  font-size: 25px;
  letter-spacing: .1em;
  color: #fff;
}

.sec02 .cont01 .item:nth-of-type(1) .item_title {
  background: #ce807d;
}

.sec02 .cont01 .item:nth-of-type(1) .item_title:before {
  content: "";
  position: absolute;
  left: 230px;
  top: 0;
  border-left: 20px solid #ce807d;
  border-right: 20px solid transparent;
  border-top: 20px solid transparent;
  border-bottom: 20px solid transparent;
}

.sec02 .cont01 .item:nth-of-type(2) .item_title {
  background: #bd7674;
}

.sec02 .cont01 .item:nth-of-type(2) .item_title:before {
  content: "";
  position: absolute;
  left: 230px;
  top: 0;
  border-left: 20px solid #bd7674;
  border-right: 20px solid transparent;
  border-top: 20px solid transparent;
  border-bottom: 20px solid transparent;
}

.sec02 .cont01 .item:nth-of-type(3) .item_title {
  background: #a16362;
}

.sec02 .cont01 .item:nth-of-type(3) .item_title:before {
  content: "";
  position: absolute;
  left: 230px;
  top: 0;
  border-left: 20px solid #a16362;
  border-right: 20px solid transparent;
  border-top: 20px solid transparent;
  border-bottom: 20px solid transparent;
}

.sec02 .cont01 .item:nth-of-type(4) .item_title {
  background: #84504f;
}

.sec02 .cont01 .item:nth-of-type(4) .item_title:before {
  content: "";
  position: absolute;
  left: 230px;
  top: 0;
  border-left: 20px solid #84504f;
  border-right: 20px solid transparent;
  border-top: 20px solid transparent;
  border-bottom: 20px solid transparent;
}

.sec02 .cont01 .item_image {
  margin-bottom: 20px;
  text-align: center;
}

.sec02 .cont01 .item_text {
  line-height: 2;
  text-align: justify;
}

.sec02 .cont02 {
  margin-bottom: 100px;
}

.sec02 .cont02 .cont_title {
  margin-bottom: 50px;
}

.sec02 .cont02 .flexbox {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}

.sec02 .cont02 .list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  width: 510px;
  margin-right: 50px;
}

.sec02 .cont02 .item {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: #e7d8d1;
  font-size: 23px;
  font-weight: 700;
  letter-spacing: .2em;
  color: #ce807d;
  text-align: center;
}

.sec02 .cont02 .item:nth-child(n - 4) {
  margin-bottom: 30px;
}

.sec02 .cont02 .item .item_text {
  position: relative;
  z-index: 2;
}

.sec02 .cont02 .item:nth-of-type(1):before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  width: 90px;
  height: 86px;
  margin: auto;
  background: url(../images/perio/icon_haien.png) center/contain no-repeat;
}

.sec02 .cont02 .item:nth-of-type(2):before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  width: 95px;
  height: 77px;
  margin: auto;
  background: url(../images/perio/icon_doumyaku.png) center/contain no-repeat;
}

.sec02 .cont02 .item:nth-of-type(3):before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  width: 65px;
  height: 94px;
  margin: auto;
  background: url(../images/perio/icon_shinzou.png) center/contain no-repeat;
}

.sec02 .cont02 .item:nth-of-type(4):before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  width: 79px;
  height: 97px;
  margin: auto;
  background: url(../images/perio/icon_tounyou.png) center/contain no-repeat;
}

.sec02 .cont02 .item:nth-of-type(5):before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  width: 81px;
  height: 81px;
  margin: auto;
  background: url(../images/perio/icon_kotsu.png) center/contain no-repeat;
}

.sec02 .cont02 .item:nth-of-type(6):before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  width: 88px;
  height: 89px;
  margin: auto;
  background: url(../images/perio/icon_teitaijyu.png) center/contain no-repeat;
}

.sec02 .cont02 .cont_text {
  width: 460px;
}

.sec02 .box {
  position: relative;
  width: 980px;
  padding: 80px 40px 80px;
  margin: 0 auto;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  background: rgba(196, 219, 227, 0.83);
}

.sec02 .box:before {
  content: "";
  position: absolute;
  right: 80px;
  bottom: -30px;
  width: 345px;
  height: 83px;
  background: url(../images/perio/text_check.png) center/contain no-repeat;
}

.sec02 .box .lead_text {
  position: absolute;
  top: -80px;
  right: 50px;
}

.sec02 .box .box_title {
  padding-bottom: 20px;
  border-bottom: 1px dashed #616c6c;
  margin-bottom: 30px;
  font-family: "noto serif jp", serif;
  font-size: 36px;
  font-weight: 600;
  color: #616c6c;
  letter-spacing: .2em;
  text-align: center;
}

.sec02 .box .list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
}

.sec02 .box .item {
  position: relative;
  width: 33%;
  padding-left: 2.5em;
  padding-right: 1em;
  margin-bottom: 30px;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  font-size: 17px;
  color: #000000;
  letter-spacing: .2em;
}

.sec02 .box .item:before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 27px;
  height: 23px;
  background: url(../images/perio/check.png) center/contain no-repeat;
}

.sec02 .box .box_text {
  font-family: "noto serif jp", serif;
  font-size: 31px;
  font-weight: 600;
  color: #616c6c;
  letter-spacing: .2em;
  text-align: center;
}

@media screen and (max-width: 768px) {
  .sec02 {
    padding: 13.8vw 5.5vw 27.7vw;
    background: #fcf9f2;
  }
  .sec02 .sec_title {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 5.5vw 0;
    margin: 0 auto 8.3vw;
    border-radius: 20px;
    background: #ce807d;
    font-size: 6.9vw;
    color: #fff;
    letter-spacing: .1em;
    text-align: center;
  }
  .sec02 .sec_text {
    width: 100%;
    margin: 0 auto 13.8vw;
  }
  .sec02 .cont {
    width: 100%;
    margin: 0 auto;
  }
  .sec02 .cont_title {
    padding-bottom: 2.7vw;
    border-bottom: 1px solid #bf7e80;
    margin-bottom: 8.3vw;
    font-size: 6.1vw;
    font-weight: 500;
    letter-spacing: .2em;
    color: #bf7e80;
    text-align: center;
  }
  .sec02 .cont01 {
    margin-bottom: 27.7vw;
  }
  .sec02 .cont01 .list {
    display: block;
    -webkit-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
  }
  .sec02 .cont01 .item {
    width: 100%;
    margin: 0 auto;
  }
  .sec02 .cont01 .item:not(:last-of-type) {
    margin-bottom: 22.2vw;
  }
  .sec02 .cont01 .item_title {
    position: relative;
    width: 63.8vw;
    height: 11.1vw;
    padding-left: 5.5vw;
    margin-bottom: 5.5vw;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
    font-size: 5.5vw;
    letter-spacing: .1em;
    color: #fff;
    line-height: 11.1vw;
  }
  .sec02 .cont01 .item_text {
    font-size: 4.4vw;
  }
  .sec02 .cont01 .item:nth-of-type(1) .item_title {
    background: #ce807d;
  }
  .sec02 .cont01 .item:nth-of-type(1) .item_title:before {
    content: "";
    position: absolute;
    left: 63.8vw;
    top: 0;
    border-left: 5.5vw solid #ce807d;
    border-right: 5.5vw solid transparent;
    border-top: 5.5vw solid transparent;
    border-bottom: 5.5vw solid transparent;
  }
  .sec02 .cont01 .item:nth-of-type(1) .item_image img {
    width: 40.5vw;
    padding-left: 5vw;
  }
  .sec02 .cont01 .item:nth-of-type(2) .item_title {
    background: #bd7674;
  }
  .sec02 .cont01 .item:nth-of-type(2) .item_title:before {
    content: "";
    position: absolute;
    left: 63.8vw;
    top: 0;
    border-left: 5.5vw solid #bd7674;
    border-right: 5.5vw solid transparent;
    border-top: 5.5vw solid transparent;
    border-bottom: 5.5vw solid transparent;
  }
  .sec02 .cont01 .item:nth-of-type(2) .item_image img {
    width: 32.6vw;
  }
  .sec02 .cont01 .item:nth-of-type(3) .item_title {
    background: #a16362;
  }
  .sec02 .cont01 .item:nth-of-type(3) .item_title:before {
    content: "";
    position: absolute;
    left: 63.8vw;
    top: 0;
    border-left: 5.5vw solid #a16362;
    border-right: 5.5vw solid transparent;
    border-top: 5.5vw solid transparent;
    border-bottom: 5.5vw solid transparent;
  }
  .sec02 .cont01 .item:nth-of-type(3) .item_image img {
    width: 28.9vw;
  }
  .sec02 .cont01 .item:nth-of-type(4) .item_title {
    background: #84504f;
  }
  .sec02 .cont01 .item:nth-of-type(4) .item_title:before {
    content: "";
    position: absolute;
    left: 63.8vw;
    top: 0;
    border-left: 5.5vw solid #84504f;
    border-right: 5.5vw solid transparent;
    border-top: 5.5vw solid transparent;
    border-bottom: 5.5vw solid transparent;
  }
  .sec02 .cont01 .item:nth-of-type(4) .item_image img {
    width: 45.4vw;
    padding-left: 20vw;
  }
  .sec02 .cont01 .item_image {
    margin-bottom: 5.5vw;
    text-align: center;
  }
  .sec02 .cont01 .item_text {
    line-height: 2;
    text-align: justify;
  }
  .sec02 .cont02 {
    margin-bottom: 100px;
  }
  .sec02 .cont02 .cont_title {
    margin-bottom: 50px;
  }
  .sec02 .cont02 .flexbox {
    display: block;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
  }
  .sec02 .cont02 .list {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    -webkit-box-pack: justify;
        -ms-flex-pack: justify;
            justify-content: space-between;
    width: 100%;
    margin-right: 50px;
  }
  .sec02 .cont02 .item {
    position: relative;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    width: 41.6vw;
    height: 41.6vw;
    border-radius: 50%;
    background: #e7d8d1;
    font-weight: 700;
    letter-spacing: .2em;
    color: #ce807d;
    text-align: center;
  }
  .sec02 .cont02 .item:nth-child(n - 4) {
    margin-bottom: 8.3vw;
  }
  .sec02 .cont02 .item .item_text {
    position: relative;
    z-index: 2;
    font-size: 5.5vw;
  }
  .sec02 .cont02 .item:nth-of-type(1):before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    width: 25vw;
    height: 23.8vw;
    margin: auto;
    background: url(../images/perio/icon_haien.png) center/contain no-repeat;
  }
  .sec02 .cont02 .item:nth-of-type(2):before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    width: 26.3vw;
    height: 21.3vw;
    margin: auto;
    background: url(../images/perio/icon_doumyaku.png) center/contain no-repeat;
  }
  .sec02 .cont02 .item:nth-of-type(3):before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    width: 18vw;
    height: 26.1vw;
    margin: auto;
    background: url(../images/perio/icon_shinzou.png) center/contain no-repeat;
  }
  .sec02 .cont02 .item:nth-of-type(4):before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    width: 21.9vw;
    height: 26.9vw;
    margin: auto;
    background: url(../images/perio/icon_tounyou.png) center/contain no-repeat;
  }
  .sec02 .cont02 .item:nth-of-type(5):before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    width: 22.5vw;
    height: 22.5vw;
    margin: auto;
    background: url(../images/perio/icon_kotsu.png) center/contain no-repeat;
  }
  .sec02 .cont02 .item:nth-of-type(6):before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    width: 24.4vw;
    height: 24.7vw;
    margin: auto;
    background: url(../images/perio/icon_teitaijyu.png) center/contain no-repeat;
  }
  .sec02 .cont02 .cont_text {
    width: 100%;
  }
  .sec02 .box {
    position: relative;
    width: 100%;
    padding: 11.1vw 5.5vw;
    margin: 0 auto;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
    background: rgba(196, 219, 227, 0.83);
  }
  .sec02 .box:before {
    content: "";
    position: absolute;
    right: 0;
    left: 0;
    bottom: -11.1vw;
    width: 77.7vw;
    height: 18.6vw;
    margin: 0 auto;
    background: url(../images/perio/text_check.png) center/contain no-repeat;
  }
  .sec02 .box .lead_text {
    position: absolute;
    top: -16.6vw;
    right: 0;
  }
  .sec02 .box .lead_text img {
    width: 55.5vw;
    height: 28.1vw;
  }
  .sec02 .box .box_title {
    padding-bottom: 20px;
    border-bottom: 1px dashed #616c6c;
    margin-bottom: 30px;
    font-family: "noto serif jp", serif;
    font-size: 6.9vw;
    font-weight: 600;
    color: #616c6c;
    letter-spacing: .2em;
    text-align: center;
  }
  .sec02 .box .list {
    display: block;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
  }
  .sec02 .box .item {
    position: relative;
    width: 100%;
    padding-left: 2.5em;
    padding-right: 1em;
    margin-bottom: 30px;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
    font-size: 4.4vw;
    color: #000000;
    letter-spacing: .2em;
  }
  .sec02 .box .item:before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 7.5vw;
    height: 6.3vw;
    background: url(../images/perio/check.png) center/contain no-repeat;
  }
  .sec02 .box .box_text {
    font-family: "noto serif jp", serif;
    font-size: 5.1vw;
    font-weight: 600;
    color: #616c6c;
    letter-spacing: .2em;
    text-align: center;
  }
}

.sec03 {
  padding-bottom: 80px;
  background: #fcf9f2;
}

.sec03 .sec_header {
  position: relative;
  width: 1240px;
  height: 120px;
  margin: 0 auto 80px;
  background: #ce807d;
}

.sec03 .sec_header:before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  width: 1237px;
  height: 170px;
  margin: auto;
  background: url(../images/caries/bg01.png) center/contain no-repeat;
}

.sec03 .sec_title {
  position: relative;
  z-index: 2;
  font-size: 35px;
  color: #fff;
  letter-spacing: .2em;
  line-height: 120px;
  text-align: center;
}

.sec03 .sec_text {
  width: 900px;
  margin: 0 auto 100px;
}

.sec03 .contbox {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}

.sec03 .middle_text {
  position: relative;
  padding-top: 50px;
  font-size: 21px;
  letter-spacing: .05em;
  text-align: center;
}

.sec03 .middle_text:before {
  content: "";
  position: absolute;
  top: 150px;
  left: 0;
  right: 0;
  width: 59px;
  height: 59px;
  margin: 0 auto;
  background: url(../images/perio/cross.png) center/contain no-repeat;
}

.sec03 .cont {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  width: 321px;
  height: 321px;
  border-radius: 50%;
  background: #fff;
}

.sec03 .cont .cont_title {
  margin-bottom: 15px;
  width: 263px;
  font-size: 21px;
  letter-spacing: .2em;
  text-align: center;
}

.sec03 .cont .item {
  position: relative;
  padding-left: 2.5em;
  font-size: 20px;
}

.sec03 .cont .item:before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 18px;
  height: 18px;
  background: url(../images/perio/square.png) center/contain no-repeat;
}

.sec03 .cont:nth-of-type(1):before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -100px;
  width: 233px;
  height: 195px;
  margin: 0 auto;
  background: url(../images/perio/procare.png) center/contain no-repeat;
}

.sec03 .cont:nth-of-type(1) .cont_title {
  background: rgba(196, 219, 227, 0.83);
}

.sec03 .cont:nth-of-type(2):before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -100px;
  width: 230px;
  height: 216px;
  margin: 0 auto;
  background: url(../images/perio/selfcare.png) center/contain no-repeat;
}

.sec03 .cont:nth-of-type(2) .cont_title {
  background: rgba(206, 128, 125, 0.57);
}

@media screen and (max-width: 768px) {
  .sec03 {
    padding-bottom: 22.2vw;
    background: #fcf9f2;
  }
  .sec03 .sec_header {
    position: relative;
    width: 100%;
    height: auto;
    padding: 5.5vw 2.7vw;
    margin: 0 auto 13.8vw;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
    background: #ce807d;
  }
  .sec03 .sec_header:before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    margin: auto;
    background: url(../images/caries/bg01.png) center/cover no-repeat;
  }
  .sec03 .sec_title {
    position: relative;
    z-index: 2;
    font-size: 5.5vw;
    color: #fff;
    line-height: 1.5;
    letter-spacing: .2em;
    text-align: center;
  }
  .sec03 .sec_body {
    padding-left: 5.5vw;
    padding-right: 5.5vw;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
  }
  .sec03 .sec_text {
    width: 100%;
    margin: 0 auto 27.7vw;
  }
  .sec03 .contbox {
    display: block;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
  }
  .sec03 .middle_text {
    position: relative;
    padding-top: 13.8vw;
    margin-bottom: 55.5vw;
    font-size: 5.5vw;
    letter-spacing: .05em;
    text-align: center;
  }
  .sec03 .middle_text:before {
    content: "";
    position: absolute;
    top: 36.1vw;
    left: 0;
    right: 0;
    width: 16.3vw;
    height: 16.3vw;
    margin: 0 auto;
    background: url(../images/perio/cross.png) center/contain no-repeat;
  }
  .sec03 .cont {
    position: relative;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
        -ms-flex-direction: column;
            flex-direction: column;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    width: 83.3vw;
    height: 83.3vw;
    margin: 0 auto;
    border-radius: 50%;
    background: #fff;
  }
  .sec03 .cont .cont_title {
    margin-bottom: 4.1vw;
    width: 72.2vw;
    font-size: 5.5vw;
    letter-spacing: .2em;
    text-align: center;
  }
  .sec03 .cont .item {
    position: relative;
    padding-left: 2em;
    font-size: 5vw;
  }
  .sec03 .cont .item:before {
    content: "";
    position: absolute;
    left: 0;
    top: 1.3vw;
    width: 5vw;
    height: 5vw;
    background: url(../images/perio/square.png) center/contain no-repeat;
  }
  .sec03 .cont:nth-of-type(1):before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -27.7vw;
    width: 64.7vw;
    height: 54.1vw;
    margin: 0 auto;
    background: url(../images/perio/procare.png) center/contain no-repeat;
  }
  .sec03 .cont:nth-of-type(1) .cont_title {
    background: rgba(196, 219, 227, 0.83);
  }
  .sec03 .cont:nth-of-type(2):before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: -27.7vw;
    width: 63.8vw;
    height: 60vw;
    margin: 0 auto;
    background: url(../images/perio/selfcare.png) center/contain no-repeat;
  }
  .sec03 .cont:nth-of-type(2) .cont_title {
    background: rgba(206, 128, 125, 0.57);
  }
}

.sec04 {
  padding: 100px 0;
  background: url(../images/perio/maintenance.jpg) center/cover no-repeat;
}

.sec04 .inner {
  width: 850px;
  margin: 0 auto;
}

.sec04 .sec_title {
  margin-bottom: 50px;
  font-family: "noto serif jp", serif;
  font-size: 35px;
  font-weight: 500;
  letter-spacing: .05em;
  color: #4a3a30;
}

.sec04 .sec_text {
  margin-bottom: 80px;
  color: #4a3a30;
}

.sec04 .link_btn {
  width: 720px;
  margin: 0 auto;
  background: #fff;
}

.sec04 .link_btn a {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
  padding: 30px 0;
  padding-left: 180px;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  background: #a38f61;
  color: #fff;
}

.sec04 .link_btn a:before {
  content: "";
  position: absolute;
  left: -50px;
  bottom: 0;
  width: 216px;
  height: 173px;
  background: url(../images/perio/check02.png) center/contain no-repeat;
}

.sec04 .link_btn a:after {
  content: "";
  position: absolute;
  right: 10px;
  bottom: 10px;
  width: 16px;
  height: 16px;
  background: url(../images/caries/arrow02.png) center/contain no-repeat;
}

.sec04 .link_btn .textbox {
  width: 475px;
}

.sec04 .link_btn .btn_title {
  margin-bottom: 30px;
  font-size: 22px;
  letter-spacing: .05em;
}

.sec04 .link_btn .btn_text {
  line-height: 2;
}

@media screen and (max-width: 768px) {
  .sec04 {
    padding: 27.7vw 5.5vw;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
    background: url(../images/perio/maintenance.jpg) center/cover no-repeat;
  }
  .sec04 .inner {
    width: 100%;
    margin: 0 auto;
  }
  .sec04 .sec_title {
    margin-bottom: 13.8vw;
    font-family: "noto serif jp", serif;
    font-size: 6.1vw;
    font-weight: 500;
    letter-spacing: .05em;
    color: #4a3a30;
  }
  .sec04 .sec_text {
    margin-bottom: 13.8vw;
    color: #4a3a30;
  }
  .sec04 .link_btn {
    width: 100%;
    margin: 0 auto;
    background: #fff;
  }
  .sec04 .link_btn a {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
    padding: 5.5vw;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
    background: #a38f61;
    color: #fff;
  }
  .sec04 .link_btn a:before {
    content: "";
    position: absolute;
    left: -8vw;
    bottom: auto;
    top: -8.3vw;
    width: 41.6vw;
    height: 33.2vw;
    background: url(../images/perio/check02.png) center/contain no-repeat;
  }
  .sec04 .link_btn a:after {
    content: "";
    position: absolute;
    right: 2.7vw;
    bottom: 2.7vw;
    width: 4.4vw;
    height: 4.4vw;
    background: url(../images/caries/arrow02.png) center/contain no-repeat;
  }
  .sec04 .link_btn .textbox {
    width: 100%;
  }
  .sec04 .link_btn .btn_title {
    padding-left: 25vw;
    margin-bottom: 8.3vw;
    font-size: 4.7vw;
    letter-spacing: .05em;
  }
  .sec04 .link_btn .btn_text {
    line-height: 2;
    font-size: 4.1vw;
  }
}
/*# sourceMappingURL=perio.css.map */