@charset "utf-8";
html {
  font-size: 100%
}
body {
  color: rgb(000, 000, 000);
  font-family: "Helvetica Neue", "Arial", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Meiryo", sans-serif;
  font-size: 18px;
  line-height: 1.7;
  letter-spacing: 0.05em;
  font-family: "Noto Sans JP", sans-serif;
  font-optical-sizing: auto;
}
.inner_area {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 1s ease, transform 1s ease;
}
.fade-in.show {
  opacity: 1;
  transform: translateY(0);
}

/* header */
header {
  width: 100%;
  min-height: 100vh;
  background-image: url(../img/fv_img.png);
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  padding: 20px 40px;
  position: relative;
}
.menu-button {
  display: none;
}
.menu-button {
  display: none; 
  position: fixed;
  top: 25px;
  right: 40px;
  width: 30px;
  height: 24px;
  padding: 0;
  border: none;
  background: none;
  z-index: 1001;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
}
.menu-button span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: rgb(0, 7, 103);
  border-radius: 2px;
  transition: .2s;
}
.menu-button.open span:nth-child(1) {
  transform: rotate(45deg) translateY(14px);
}
.menu-button.open span:nth-child(2) {
  opacity: 0;
}
.menu-button.open span:nth-child(3) {
  transform: rotate(-45deg) translateY(-14px);
}
nav {
  display: block;
}
nav ul {
  display: flex;
  justify-content: flex-end;
}
nav li {
  margin-left: 25px;
  padding-left: 25px;
}
nav li+ li {
  border-left: 1px solid rgb(255, 255, 255);
}

nav li a {
  color: rgb(255, 255, 255);
  font-weight: 300;
  transition: all  0.3s ease;
  display: inline-block;
  position: relative;
	transition: 0.3s;
}
nav ul li a:hover {
  text-shadow: 0px 0px 10px rgb(1, 5, 65);
}
h1 {
  color: rgb(255, 255, 255);
  font-size: 1.6em;
  margin-top: 20px;
  line-height: 1.4;
}
h1 span {
  padding-top: 5px;
  border-top: 1px solid rgb(255, 255, 255);
  font-size: 0.7em;
}
h2 {
  color: rgb(255, 255, 255);
  font-size: min(5vw, 80px);
  text-align: center;
  position: absolute;
  top: 37%;
  left: 45%;
  filter: drop-shadow(0 0 1px #c0c0c0);
  letter-spacing: 0.12em;
}
header .water_mark {
  width: 80%;
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  }

/* fv_area */
.fv_area {
  background-color: rgb(0, 7, 103);
  padding: 40px 40px;
}
.fv_area p {
  color: rgb(255, 255, 255);
  text-align: center;
  font-size: 20px;
}
.fv_area p span {
  margin-bottom: 1em;
  display: block;
}

/* aboutus_area */
.aboutus_area {
  padding-top: 100px;
  padding-bottom: 60px;
  background-color: rgb(243, 244, 255);
}
h3 {
  color: rgb(255, 255, 255);
  text-align: left;
  font-size: 28px;
}
.aboutus_area h3 {
  width: 100%;
  height: auto;
  background-image: url(../img/bg_aboutus.jpeg);
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  padding: 50px 40px;
}
.aboutus_area p {
  margin-top: 30px;
  margin-bottom: 40px;
}
h4 {
  color: rgb(0, 7, 103);
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 10px;
  margin-top: 50px;
}
h4::before {
  content: '';
  display: inline-block;
  width: 40px;
  height: 40px;
  background-image: url(../img/before_img.png);
  background-size: contain;
  vertical-align: middle;
  background-repeat: no-repeat;
}

/* service_details_area */
.service_details_area {
  margin-top: 80px;
  margin-bottom: 60px;
}
.service_details_area h3 {
  width: 100%;
  height: auto;
  background-image: url(../img/bg_service.jpeg);
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  padding: 50px 40px;
}
.service_details_area h4 {
  margin-top: 70px;
  margin-bottom: 20px;
}

/* customer_list */
.service_details_area ul.customer_list {
  width: 100%;
}
.service_details_area ul.customer_list  li.bg_customer_one {
  text-align: left;
}
.service_details_area ul.customer_list  li.bg_customer_two {
  text-align: right;
  margin-top: -200px;
}
.service_details_area ul.customer_list  li.bg_customer_three {
  text-align: left;
  margin-top: -200px;
}
.service_details_area ul.customer_list  li.bg_customer_four {
  text-align: right;
  margin-top: -200px;
}
.service_details_area ul.customer_list  li.bg_customer_one img {
  width: 90%;
}
.service_details_area ul.customer_list  li.bg_customer_two img {
  width: 90%;
}
.service_details_area ul.customer_list  li.bg_customer_three img {
  width: 90%;
}
.service_details_area ul.customer_list  li.bg_customer_four img {
  width: 90%;
}

/* bg_support */
.service_details_area .bg_support {
  width: 100%;
  position: relative;
}
.service_details_area .bg_support img {
  width: 100%;
  height: auto;
}
.service_details_area .bg_support ul.flex_area  {
  display: flex;
  justify-content: space-evenly;
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
}
.service_details_area .bg_support ul.flex_area li {
  width: 32%;
  background-color: rgba(243, 244, 255, 0.9);
}
.service_details_area .bg_support ul.flex_area li h5 {
  background-color: rgb(0, 7, 103);
  color: rgb(255, 255, 255);
  padding: 10px 0;
  font-size: min(1.5vw, 18px);
  font-weight: 500;
  text-align: center;
  text-shadow: 0px 0px 10px rgb(1, 7, 97);
}
.service_details_area .bg_support ul.flex_area li p {
  padding:10px 10px;
  font-size: min(1.7vw, 20px);
  line-height: 1.5;
}

/* bg_service */
.bg_service {
  width: 100%;
  min-height: 100vh;
  background-image: url(../img/bg_service_img.jpeg);
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  padding-top: 10px;
  padding-bottom: 80px;
}
.service_details_area .bg_service ul  {
  width: 100%;
  height: auto;
}
.service_details_area .bg_service ul li.bg_fff {
  background-color:  rgba(243, 244, 255, 0.9);
  margin-bottom: 80px;
  margin-top: 80px;
  width: 70%;
  padding: 14px 14px;
  line-height: 1.5;
  font-size: min(1.8vw, 20px);
}
.service_details_area .bg_service ul li.right_group {
  margin: 0 0 0 auto;
}

.service_details_area .bg_service ul li.bg_fff h5 {
  background-color: rgb(0, 7, 103);
  color: rgb(255, 255, 255);
  padding: 10px 14px;
  font-size: min(1.6vw, 20px);
  font-weight: 500;
  text-align: left;
  text-shadow: 0px 0px 10px rgb(1, 7, 97);
  margin-bottom: 12px;
}

img.last_logo {
  width: 20%;
  margin: 0 auto 30px;
  display: block;

}

/* footer */
footer {
  background-color: rgb(0, 7, 103);
  padding: 60px 20px;
}
footer ul.pc_only {
  width: 100%;
  display: flex;
  justify-content: space-around;
  margin: 0 auto;
}
footer ul li {
  max-width: 300px;
  color: rgb(255, 255, 255);
  font-size: 16px;
  text-shadow: 0px 0px 0px rgb(1, 7, 97);
  margin: 0 auto;
}
footer ul li a {
  text-decoration: underline;
}
footer ul li h6 {
  font-weight: 500;
}
footer ul li span {
  font-size: 12px;
}
footer ul li small {
  font-size: 9px;
}
footer ul.sp_only {
  display: none;
}

@media screen and (max-width: 1100px) {
  .service_details_area ul.customer_list  li.bg_customer_two {
    text-align: right;
    margin-top: -150px;
  }
  .service_details_area ul.customer_list  li.bg_customer_three {
    text-align: left;
    margin-top: -150px;
  }
  .service_details_area ul.customer_list  li.bg_customer_four {
    text-align: right;
    margin-top: -170px;
  }
}


@media screen and (max-width: 834px) {
  body {
    font-size: 14px;
  }
  .inner_area {
    max-width: 100%;
    margin: 0 auto;
  }
  header {
    min-height: 50vh;
    position: relative;
    z-index: 2;
  }  
  .menu-button {
    display: flex;
  }
  .side-menu {
    display: block;
    position: fixed;
    top: 0;
    right: -240px;
    width: 220px;
    height: 50vh;
    background-color: rgba(243, 244, 255, 0.9);
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    padding: 70px 30px;
    transition: right 0.3s ease;
  }
  .side-menu.open {
    right: 0;
  }
  nav ul {
    display: block;
  }
  nav li+ li {
    border-left: 0;
  }
  nav li {
    margin: 0 auto 16px;
    padding-left: 0;
  }
  nav li a {
    color: rgb(000, 000, 000);
    padding-bottom: 5px;
  }
  nav ul li a:hover {
    text-shadow: 0px 0px 1px rgba(27, 27, 27, 0.841);
  }
  
  h1 {
    margin-top: 0;
    font-size: 1.1em;
  }
  h2 {
    font-size: min(5vw, 40px);
    left: 45%;
  }
  .fv_area {
    padding: 30px 0;
  }
  .fv_area p {
    width: 90%;
    margin: 0 auto;
    text-align: left;
    font-size: 14px;
  }
  .fv_area p span {
    text-align: center;
  }


  .aboutus_area {
    padding-top: 40px;
    padding-bottom: 40px;
  }
  .aboutus_area h3 {
    padding: 30px 40px;
    font-size: 20px;
  }
  .aboutus_area p {
    margin: 20px 10px 30px;
  }
  h4 {
    margin: 20px 10px 10px;
    font-size: 18px;
  }
  .aboutus_area ul {
    padding: 0 10px;
  }


  .service_details_area {
    margin-top: 40px;
    margin-bottom: 30px;
  }
  .service_details_area h3 {
    padding: 30px 40px;
    font-size: 20px;
  }
  .service_details_area h4 {
    margin-top: 30px;
    margin-bottom: 20px;
  }
  .service_details_area ul.customer_list  li.bg_customer_two {
    margin-top: -60px;
  }
  .service_details_area ul.customer_list  li.bg_customer_three {
    margin-top: -60px;
  }
  .service_details_area ul.customer_list  li.bg_customer_four {
    margin-top: -60px;
  }


  .service_details_area .bg_support {
    position: static;
  }
  .service_details_area .bg_support ul.flex_area {
    display: block;
    position: initial;
    transform: translateX(0%);
    margin-top: 10px;
  }
  .service_details_area .bg_support ul.flex_area li {
    width: 100%;
    margin: 0 auto 10px; 
  }
  .service_details_area .bg_support ul.flex_area li p {
    font-size: 14px;
  }
  .service_details_area .bg_support ul.flex_area li h5 {
    font-size: 15px;
  }
  .bg_service {
    padding-bottom: 20px;
  }
  .service_details_area .bg_service ul li.bg_fff {
    margin-top: 70px;
    margin-bottom: 40px;
    width: 90%;
    font-size: 14px;
  }
  .service_details_area .bg_service ul li.bg_fff h5 {
    font-size: 15px;
  }


  img.last_logo {
    width: 40%;
  }
  footer {
    padding: 30px 10px;
  }
  footer ul.sp_only {
    display: block;
    text-align: center;
  }
  footer ul.pc_only {
    display: none;
  }
  footer ul.sp_only li {
    width: 80%;
    margin: 0 auto 30px;
  }
  footer ul.sp_only li a {
    word-break: break-all;
  }
}