@charset "UTF-8";
/* -----------------------------------------------------
variables
----------------------------------------------------- */
* {
  margin: 0;
  padding: 0;
  border: 0;
  outline: 0;
  word-break: break-word;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  vertical-align: top;
  background: transparent;
}

html, body {
  font-size: 62.5%;
  text-align: center;
  color: #000;
  font-family: "游ゴシック体", YuGothic, "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", sans-serif;
}

article, aside, details, figcaption, figure,
footer, header, hgroup, menu, nav, section, main {
  display: block;
}

li {
  list-style-type: none;
}

blockquote, q {
  quotes: none;
}

blockquote::before, blockquote::after, q::before, q::after {
  content: '';
  content: none;
}

a {
  text-decoration: none;
  color: inherit;
}

a:hover {
  cursor: pointer;
}

img, picture {
  vertical-align: middle;
  max-width: 100%;
}

img {
  height: auto;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

input, select {
  vertical-align: middle;
}

br {
  line-height: 0;
}

input, textarea, select, button {
  font: inherit;
}

/* safariでのデフォルトスタイルをリセット */
input[type="submit"],
input[type="button"] {
  border-radius: 0;
  -webkit-box-sizing: content-box;
  -webkit-appearance: button;
  -moz-appearance: button;
  appearance: button;
  border: none;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}

input[type="submit"]::-webkit-search-decoration,
input[type="button"]::-webkit-search-decoration {
  display: none;
}

input[type="submit"]::focus,
input[type="button"]::focus {
  outline-offset: -2px;
}

.pc {
  display: block !important;
}

.sp {
  display: none !important;
}

@media only screen and (max-width: 768px) {
  .pc {
    display: none !important;
  }
  .sp {
    display: block !important;
  }
}

img {
  max-width: 100%;
  vertical-align: middle;
}

a {
  -webkit-transition: all 0.3s;
  -o-transition: all 0.3s;
  transition: all 0.3s;
}

a:hover {
  opacity: 0.8;
}

picture {
  display: block;
}

.center {
  text-align: center;
}

.left {
  text-align: left;
}

body {
  font-family: 'Noto Sans JP', sans-serif, "Yu Gothic Medium", "游ゴシック Medium", YuGothic, "游ゴシック体", "ヒラギノ角ゴ Pro", "Hiragino Kaku Gothic Pro","メイリオ","Meiryo","ＭＳ Ｐゴシック",sans-serif;
  font-weight: normal;
}

.pc_logo {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 2;
  max-width: 250px;
  text-align: left;
}

@media screen and (max-width: 820px) {
  .pc_logo {
    display: none;
  }
}

@media screen and (max-width: 1100px) {
  .pc_logo img {
    width: 75%;
  }
}

@media screen and (min-width: 576px) {
  .top-front {
    background-image: url(../img/top_kv_bg.png);
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 1;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: start;
    -ms-flex-align: start;
    align-items: flex-start;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    overflow-y: scroll;
  }
}

.top-container {
  margin: 0 auto;
}

@media screen and (min-width: 576px) {
  .top-container {
    max-width: 375px;
  }
}

@media (min-width: 768px) {
  .top-container {
    background-color: #FFFFFF;
    -webkit-box-shadow: 0 3px 46px rgba(0, 0, 0, 0.16);
    box-shadow: 0 3px 46px rgba(0, 0, 0, 0.16);
  }
}

header {
  background: #001975;
  height: 50px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
  padding: 0 20px;
}

header a:nth-of-type(1) img {
  width: 71px;
  height: 19px;
}

header a:nth-of-type(2) img {
  width: 29px;
  height: 30px;
}

.work {
  background: #094589;
  padding: 40px 30px 160px;
  color: #fff;
  font-size: 10px;
}

.work > p {
  margin-bottom: 30px;
}

.work p {
  text-align: left;
}

.work p:nth-of-type(1) {
  font-size: 13px;
  line-height: 1.8;
}

.work p:nth-of-type(1) span {
  display: block;
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 5px;
}

.work p:nth-of-type(2) {
  font-size: 12px;
}

.work p:nth-of-type(2) span {
  display: block;
  font-size: 16px;
  font-weight: bold;
  margin-bottom: 5px;
}

.work > img {
  width: 180px;
  margin: 0 auto;
  margin-bottom: 30px;
}

.work .photo_flex .block {
  margin-bottom: 30px;
}

.work .photo_flex .block p {
  margin-left: 10px;
  font-size: 13px;
  margin-top: 20px;
}

.work .photo_flex .block p span {
  font-weight: bold;
  font-size: 16px;
  margin-bottom: 10px;
  display: block;
}

.work .photo_flex .block:nth-of-type(2) {
  -webkit-box-orient: horizontal;
  -webkit-box-direction: reverse;
  -ms-flex-flow: row-reverse;
  flex-flow: row-reverse;
}

.work .photo_flex .block:nth-of-type(2) p {
  margin-right: 10px;
  margin-left: 0;
}

.work .photo_flex .block img {
  width: 100%;
}

.letter {
  padding: 10px 0 190px;
  background: #2a79bd;
  position: relative;
}

.letter:before {
  display: block;
  content: "";
  position: absolute;
  top: -123px;
  left: 0;
  background: url(../img/triangle.png) no-repeat;
  width: 100%;
  height: 123px;
  background-size: 100% 100%;
}

.letter .card_area .card:nth-child(odd) {
  -webkit-transform: rotate(-7deg);
  -ms-transform: rotate(-7deg);
  transform: rotate(-7deg);
}

.letter .card_area .card:nth-child(even) {
  -webkit-transform: rotate(7deg);
  -ms-transform: rotate(7deg);
  transform: rotate(7deg);
}

.letter .card {
  position: relative;
  width: 287px;
  height: 170px;
  margin: 0 auto;
  -webkit-perspective: 1000px;
  perspective: 1000px;
  margin-bottom: 50px;
  z-index: 3;
}

.letter .card .front, .letter .card .back {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  -webkit-transition: -webkit-transform 1s;
  transition: -webkit-transform 1s;
  -o-transition: transform 1s;
  transition: transform 1s;
  transition: transform 1s, -webkit-transform 1s;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  image-rendering: -webkit-optimize-contrast;
}

.letter .card .front {
  /*        color: #2d1e60;*/
  /*        background: #ff4f6f;*/
}

.letter .card .back {
  background: #fff;
  /*
    color: #ff4f6f;
    background: #2d1e60;
    */
  -webkit-transform: rotateY(-180deg);
  transform: rotateY(-180deg);
}

.letter .card .back_02 {
  background: #2a79bd;
  border: 5px solid #fff;
  color: #fff;
  font-size: 12px;
  padding: 10px;
}

.letter .flipped .front {
  -webkit-transform: rotateY(180deg);
  transform: rotateY(180deg);
}

.letter .flipped .back {
  -webkit-transform: rotateY(0);
  transform: rotateY(0);
}

.letter .more_btn {
  width: 150px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.letter .more_btn:hover {
  cursor: pointer;
}

.letter p {
  font-size: 14px;
  color: #fff;
  margin-bottom: 10px;
  position: relative;
  z-index: 1;
}

.letter:after {
  display: block;
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  background: url(../img/triangle_02.png) no-repeat;
  width: 100%;
  height: 236px;
  background-size: 100% 100%;
}

.top_btn {
  position: fixed;
  bottom: 15px;
  right: 15px;
  left: 340px;
  width: 16px;
  margin: auto;
  z-index: 10;
}

@media screen and (max-width: 820px) {
  .top_btn {
    left: 90vw;
    bottom: 12vw;
  }
}

.top_btn:hover {
  cursor: pointer;
}

.top_btn img {
  width: 15.73px;
}

footer .ft_01 {
  background: #00157B;
  padding: 32px 0;
}

footer .ft_01 .txt {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  margin-bottom: 27px;
}

footer .ft_01 .txt a {
  color: #fff;
  font-size: 10px;
  text-decoration: underline;
  margin-right: 30px;
}

footer .ft_01 .txt a:last-child {
  margin-right: 0;
}

footer .ft_01 .tw_btn {
  position: relative;
  width: 44px;
  height: 44px;
  display: block;
  overflow: hidden;
  cursor: pointer;
  margin: 0 auto;
}

footer .ft_01 .tw_btn a:hover {
  opacity: 1;
}

footer .ft_01 .tw_btn img {
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  width: 100%;
  display: block;
}

footer .ft_01 .tw_btn:hover img:nth-of-type(2) {
  opacity: 0;
}

footer .ft_02 {
  height: 90px;
  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;
}

footer .ft_02 img {
  width: 120px;
  height: 24px;
}

footer .ft_03 {
  height: 80px;
  background: #00157B;
  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;
  color: #fff;
}