@charset "UTF-8";

*, *::before, *::after {
  box-sizing: border-box;
}

html, body, div, span, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, abbr, address, cite, code, del, dfn, em, img, ins, kbd, q, samp, small, strong, sub, sup, var, b, i, main, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, canvas, details, figcaption, figure, footer, header, hgroup, menu, nav, section, summary, time, mark, audio, video {
  background: transparent;
  border: 0;
  margin: 0;
  outline: 0;
  padding: 0;
  vertical-align: baseline;
}

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

ul, ol, li {
  list-style: none;
}

a {
  color: inherit;
  margin: 0;
  padding: 0;
  text-decoration: none;
}

sup {
  font-size: 11px;
  vertical-align: top;
}

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

video, img {
  height: auto;
  max-width: 100%;
}

dl {
  column-gap: 10px;
  display: flex;
  font-size: 14px;
  margin-bottom: 30px;
}


hr {
  all: unset;
  background-color: #fff;
  border: none;
  display: block;
  height: 1px;
  margin: 21px 0 clamp(25px, calc(4.651vw + 10.116px), 45px);
  padding: 0;
  width: 100%;
}

body {
  background: #fff;
  color: #000;
  font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  font-size: 18px;
  line-height: 1.7;
}

:root {
  --main-color: #3d2f91;
  scroll-behavior: smooth;
}

.header__image {
  margin: 0 auto;
  max-width: 2732px;
  width: 100%;
}

.sponsor-wrapper {
  margin-bottom: 20px;
  text-align: center;
}

.sponsor {
  background-color: var(--main-color);
  color: #fff;
  display: inline-block;
  font-size: 21px;
  line-height: 1.5;
  padding: 8px 40px;
  text-align: center;
}

h1 {
  font-size: clamp(24px,calc(1.3953vw + 19.5349px),30px);
  line-height: 1.4;
  text-align: center;
}

h1 span {
  display: block;
}

.article {
  background: url(main.png) no-repeat top -50px center / 1205px auto;
}

.article__header-container {
  margin: 0 auto;
  padding-top: 50px;
  width: min(700px,90%);
}

.text {
  font-size: clamp(15.7px, calc(.465vw + 14.212px), 17.7px);
  margin-bottom: 35px;
  text-indent: 1em;
}

.text.text--lead {
  background-color: var(--main-color);
  color: #fff;
  font-weight: bold;
  margin-bottom: 54px;
  margin-top: 20px;
  padding: 20px 25px;
  text-indent: 0;
}

.article__content {
  column-gap: 50px;
  display: flex;
  margin: 0 auto;
  max-width: 100%;
  width: 1000px;
}

.article__body {
  flex-basis: 70%;
}

.article__aside {
  flex-basis: 25%;
}

.photo {
  max-width: 100%;
  position: relative;
  width: 300px;
}

.photo:after {
  background: url(photo_back.png) no-repeat center / 662px auto;
  bottom: -390px;
  content: "";
  display: block;
  height: 220.66666%;
  position: absolute;
  right: -245px;
  width: 220.66666%;
  z-index: -1;
}

.photo-right {
  float: right;
  margin: 0 0 50px 50px;
}

.photo__caption {
  background-color: var(--main-color);
  color: #fff;
  font-size: 13px;
  padding: 10px 14px;
}

.illust {
  margin-bottom: 35px;
}

.illust__caption {
  color: var(--main-color);
  font-size: clamp(15.7px, calc(.465vw + 14.212px), 17.7px);
  margin-top: 10px;
}

.illust__caption p:last-child {
  color: #000;
  font-size: 13px;
  margin-top: 10px;
  text-align: center;
}

.section {
  position: relative;
}

.section:has(h2):after {
  background: url(sub_back.png) no-repeat top left / 256px auto;
  content: "";
  height: 100%;
  left: -55px;
  position: absolute;
  top: -55px;
  width: 100%;
  z-index: -1;
}

.section .illust:last-child, .section .text:last-child {
  margin-bottom: 0;
}

.section:last-child .text:last-child {
  margin-bottom: 35px;
}

.section__header {
  margin: 90px 0 clamp(25px, calc(7.1429vw + 2.1429px), 50px);
}

.section__header.section__header--margin-top-zero {
  margin-top: 0;
}

h2 {
  color: var(--main-color);
  font-size: clamp(18px,calc(.8571vw + 15.2571px), 21px);
  line-height: 1.4;
}

.index img {
  margin: 0 auto 20px;
  padding-top: 10px;
}

.nav__item {
  background-color: var(--main-color);
}

.nav__item:not(:last-child) {
  margin-bottom: 15px;
}

.nav__item a {
  background-color: var(--main-color);
  color: #fff;
  display: block;
  padding: 15px;
  transition: opacity .5s ease;
}

.nav__item a:hover {
  opacity: .8;
}

.nav__item:first-child {
  background: url(index_top.png) no-repeat center / cover;
}

.nav__item:first-child a {
  background-color: transparent;
}

.nav__item:first-child a + a {
  padding-top: 0;
}

.nav__item:first-child a + a  p {
  border-bottom: none;
  border-top: 1px solid #fff;
  font-size: 15px;
  margin-bottom: 0;
  padding-bottom: 0;
  padding-top: 10px;
  text-align: left;
}

.nav__item a p:first-child {
  border-bottom: 1px solid #fff;
  font-size: 17px;
  margin-bottom: 10px;
  padding-bottom: 10px;
  text-align: center;
}

.nav__item a p:not(:first-child) {
  font-size: 15px;
}

.nav__item a p span {
  display: block;
  word-break: break-word;
}

.article__footer {
  border-top: 1px solid #000;
  margin: 35px auto 45px;
  padding-top: 50px;
  text-align: center;
  width: min(1000px, 90%);
}

.company {
  display: flex;
  justify-content: center;
}

.company span {
  display: block;
}

.link {
  color: var(--main-color);
  text-decoration: underline;
  transition: opacity .5s ease;
  word-break: break-all;
}

.link:hover {
  opacity: .8;
}

.footer {
  border-top: 1px solid #000;
}

@media screen and (max-width:1050.9px) {
  .section__header {
    margin-left: auto;
    margin-right: auto;
    width: 90%;
  }

  .illust, .text {
    margin-left: auto;
    margin-right: auto;
    width: 90%;
  }

  .text.text--lead {
    width: 100%;
  }
}

@media screen and (max-width:1000.9px) {
  .article__content {
    overflow: hidden;
  }
}

@media screen and (min-width:769px) and (max-width:1000.9px) {
  .article__content {
    column-gap: clamp(25px, calc(10vw - 52.1px), 50px);
  }
}

@media screen and (min-width:769px) {
  .photo {
    width: clamp(200px,calc(50vw - 184.5px),300px);
  }

  .photo-right {
    margin: 0 0 50px clamp(25px, calc(10vw - 52.1px), 50px);
  }
}

@media screen and (max-width:768.9px) {
  .article__content {
    flex-direction: column;
    overflow: hidden;
  }

  .photo-right {
    float: none;
    margin: 0 auto 50px auto;
  }

  .aside__container {
    margin: 0 auto;
    width: 90%;
  }
}

@media screen and (min-width:500px) and (max-width:768.9px) {
  .nav__items {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(2, 1fr);
  }

  .nav__item:not(:last-child) {
    margin-bottom: 0;
  }
}