html {
  font-family: "Noto Sans JP", sans-serif;
}

.pop {
  font-family: "Poppins", sans-serif;
}

.container {
  width: 90%;
  max-width: 1120px;
  margin: 0 auto;
  position: relative;
}

.flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

/* header */
header {
  padding: 27px 0;
}
.logo {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.04em;
}
.logo span {
  color: #80ba4a;
}
.header_menu li {
  margin-left: 40px;
}
.header_menu li a {
  transition: 0.3s;
}
.header_menu li a:hover {
  color: #80ba4a;
  transition: 0.3s;
}

@media screen and (max-width: 768px) {
  header .container {
    justify-content: center;
  }
  .header_menu li {
    margin: 20px 16px 0;
  }
}
/* main */
#hero {
  background-image: url(../images/hero.jpg);
  background-position: center;
  background-size: cover;
  height: 540px;
  border-radius: 30px;
  display: flex;
  align-items: center;
  margin-bottom: 90px;
  overflow: hidden;
}
#hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.2);
  z-index: 1;
}
.hero_inner {
  color: #fff;
  z-index: 2;
  width: 100%;
  text-align: center;
}
.hero_inner p {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 16px;
}
.hero_inner h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.04em;
  margin-bottom: 30px;
}

@media screen and (max-width: 768px) {
  #hero {
    height: 400px;
  }
  .hero_inner p {
    font-size: 15px;
  }
  .hero_inner h1 {
    font-size: 17px;
  }
}

/* Concept */
#concept {
  margin-bottom: 90px;
}
.title {
  font-size: 20px;
  font-weight: 500;
  color: #80ba4a;
  margin-bottom: 40px;
}
#concept h3 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 60px;
}
.column-2 {
  width: 48%;
}
.text {
  line-height: 2;
}
.concept-img {
  background-image: url(../images/concept.jpg);
  background-position: center;
  background-size: cover;
  height: 340px;
  border-radius: 20px;
}
.heading {
  font-family: "Dancing Script", cursive;
  font-size: 200px;
  font-weight: 700;
  color: #80ba4a;
  opacity: 0.1;
  /* 浮かせたいときは z-index を指定 */
  position: absolute;
  top: 0;
  right: 0;
  transform: translateY(-30%);
  z-index: -1;
}

@media only screen and (max-width: 768px) {
  #concept h3 {
    font-size: 24px;
    line-height: 1.5em;
  }
  .column-2 {
    width: 100%;
  }
  .text {
    font-size: 15px;
    line-height: 1.7;
  }
  .concept-img {
    margin-top: 30px;
  }
}

/* service */
#service {
  margin-bottom: 120px;
}
.service_inner {
  margin-bottom: 40px;
  position: relative;
}
.column-40 {
  width: 40%;
}
.column-55 {
  width: 55%;
}
#service img {
  border-radius: 20px;
}
#service h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
}

@media only screen and (max-width: 768px) {
  .column-40 {
    width: 100%;
  }
  .column-55 {
    width: 100%;
  }
  #service h3 {
    margin-top: 10px;
    font-size: 17px;
  }
}
/* company */
#company {
  margin-bottom: 120px;
}
#company dl {
  max-width: 900px;
  margin-left: auto;
}
#company dt {
  width: 30%;
  font-weight: 700;
  padding: 38px 0;
  border-bottom: solid 1px #d2ecba;
}
#company dd {
  width: 70%;
  padding: 38px 0;
  border-bottom: solid 1px #d2ecba;
}
@media only screen and (max-width: 768px) {
  #company dl {
    font-size: 12px;
  }
}
/* bottom */
.column-a {
  background-image: url(../images/bottom1.jpg);
  background-position: center;
  background-size: cover;
  width: 24%;
  height: 270px;
  border-radius: 20px;
}
.column-b {
  background-image: url(../images/bottom2.jpg);
  background-position: center;
  background-size: cover;
  width: 18%;
  height: 270px;
  border-radius: 20px;
}
.column-c {
  background-image: url(../images/bottom3.jpg);
  background-position: center;
  background-size: cover;
  width: 24%;
  height: 270px;
  border-radius: 20px;
}
.column-d {
  background-image: url(../images/bottom4.jpg);
  background-position: center;
  background-size: cover;
  width: 28%;
  height: 270px;
  border-radius: 20px;
}

@media only screen and (max-width: 768px) {
  .column-a,
  .column-b,
  .column-c,
  .column-d {
    width: 48%;
    height: 140px;
    margin: 1%;
  }
}
/* footer */
footer {
  margin: 90px 0;
  text-align: center;
}
.copyright {
  color: #666;
  font-size: 14px;
  margin-top: 26px;
}