@charset "UTF-8";
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: #171513;
  background: #f3efe6;
  font-family: "Yu Mincho", "貂ｸ譏取悃", "Hiragino Mincho ProN", "Hiragino Mincho Pro", "Noto Serif JP", serif;
  font-size: 16px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

.site-header {
  background: rgba(255, 255, 255, 0.96);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: calc(100% - 48px);
  max-width: 1060px;
  min-height: 76px;
  margin: 0 auto;
}
.site-header__logo {
  width: 230px;
}
.site-header__back {
  padding-bottom: 2px;
  border-bottom: 1px solid #171513;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.hero {
  margin: 0 auto 3em;
  position: relative;
  min-height: 360px;
  overflow: hidden;
  background: url("../image/main_bg.jpg") no-repeat center center/cover;
  background-repeat: no-repeat;
  background-position: center, right center;
  background-size: cover, auto 100%;
}
.hero__inner {
  position: relative;
  z-index: 1;
  width: calc(100% - 48px);
  max-width: 1060px;
  margin: 0 auto;
  padding: 43px 0 30px;
}
.hero__eyebrow {
  margin: 0 0 8px;
  color: #e1141b;
  font-size: 20px;
  font-weight: 700;
}
.hero h1 {
  margin: 0 0 16px;
  font-size: clamp(35px, 4.5vw, 57px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: 0.015em;
}
.hero__lead {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.65;
}
.hero__date {
  margin: 13px 0 0;
  font-size: 14px;
}

.page-content {
  width: calc(100% - 42px);
  max-width: 1120px;
  margin: 0 auto;
  padding: 10px 0 36px;
}

.important-notice {
  position: relative;
  margin: 0 auto 26px;
  padding: 26px 52px 28px;
  border: 3px solid #704323;
  outline: 2px solid #a57b58;
  outline-offset: -9px;
  border-radius: 12px;
  background: #fff;
}
.important-notice__label {
  margin: 0 auto 20px !important;
  text-align: center;
  width: fit-content;
  padding: 4px 32px 5px;
  border-radius: 5px;
  color: #fff;
  background: #e1141b;
  font-size: 28px;
  font-weight: 700;
  line-height: 1.4;
}
.important-notice p {
  margin: 0 0 12px;
}
.important-notice__intro {
  padding-bottom: 12px;
}

.article-section {
  padding: 22px 0 6px;
  border-top: 2px solid #704323;
}
.article-section h2 {
  margin: 0 0 12px;
  padding-left: 17px;
  border-left: 9px solid #704323;
  font-size: clamp(24px, 3vw, 35px);
  line-height: 1.45;
}

.caution {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 18px;
  align-items: start;
  width: calc(100% - 86px);
  margin: 0 auto 18px;
  padding: 17px 24px;
  border: 1px solid #f2aaa2;
  border-radius: 10px;
  background: #fff0ed;
}
.caution__icon {
  display: grid;
  width: 50px;
  height: 50px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: #e1141b;
  font: 700 36px/1 Arial, sans-serif;
}
.caution__title {
  margin: 0 0 6px;
  color: #e1141b;
  font-size: 21px;
  font-weight: 700;
}
.caution p {
  margin: 0;
}

.closing-message {
  margin: 0 auto 22px;
  text-align: center;
}
.closing-message p {
  margin: 0 0 2px;
  font-size: clamp(21px, 2.6vw, 30px);
  font-weight: 700;
  line-height: 1.45;
}
.closing-message small {
  font-size: 15px;
}

.record {
  margin: 0 auto;
  padding: 14px 34px 22px;
  border: 2px solid #2d511e;
  border-radius: 14px;
  background: #fff;
}
.record h2 {
  display: flex;
  gap: 24px;
  align-items: center;
  margin: 0 0 12px;
  font-size: 30px;
  line-height: 1.4;
}
.record h2::after {
  content: "";
  flex: 1;
  height: 1px;
  background: #2d511e;
}
.record__layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(380px, 1.1fr);
  gap: 34px;
  align-items: stretch;
}
.record__videos {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.video-card {
  margin: 0;
}
.video-card__frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 9/16;
  border-radius: 5px;
  background: #111;
}
.video-card__frame iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.video-card figcaption {
  margin-top: 5px;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
}

.timeline {
  position: relative;
  margin: 0;
  padding: 3px 0 0 30px;
  border-left: 2px solid #2d511e;
  list-style: none;
}
.timeline li {
  position: relative;
  margin-bottom: 10px;
}
.timeline li::before {
  content: "";
  position: absolute;
  top: 7px;
  left: -36px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: #2d511e;
}
.timeline time, .timeline span {
  display: block;
}
.timeline time {
  font-weight: 700;
  line-height: 1.35;
}
.timeline span {
  font-size: 14px;
  line-height: 1.5;
}

.site-footer {
  color: #fff;
  background: #242321;
}
.site-footer__inner {
  display: grid;
  grid-template-columns: auto auto 1fr;
  gap: 42px;
  align-items: center;
  width: calc(100% - 48px);
  max-width: 1060px;
  min-height: 92px;
  margin: 0 auto;
}
.site-footer__logo {
  width: 230px;
  padding: 3px 8px;
}
.site-footer__back {
  padding-left: 36px;
  border-left: 1px solid #777;
  text-decoration: underline;
  text-underline-offset: 5px;
}
.site-footer__copyright {
  margin: 0;
  font-family: Georgia, serif;
  font-size: 11px;
  text-align: right;
}

@media (max-width: 820px) {
  body {
    font-size: 15px;
  }
  .site-header__inner {
    width: calc(100% - 30px);
    min-height: 64px;
  }
  .site-header__logo {
    width: 190px;
  }
  .hero {
    min-height: 0;
    background-position: center, 66% top;
    background-size: cover, auto 56%;
  }
  .hero__inner {
    width: calc(100% - 36px);
    min-height: 0;
    padding: 28px 0 22px;
  }
  .hero h1 {
    font-size: clamp(30px, 8.3vw, 44px);
  }
  .hero__lead {
    font-size: 15px;
  }
  .pc-only {
    display: none;
  }
  .page-content {
    width: calc(100% - 24px);
  }
  .important-notice {
    padding: 20px 24px 24px;
  }
  .important-notice__label {
    margin-bottom: 17px;
    padding-right: 22px;
    padding-left: 22px;
    font-size: 22px;
  }
  .article-section h2 {
    font-size: 24px;
  }
  .caution {
    grid-template-columns: 42px 1fr;
    gap: 12px;
    width: calc(100% - 18px);
    padding: 15px;
  }
  .caution__icon {
    width: 40px;
    height: 40px;
    font-size: 28px;
  }
  .caution__title {
    font-size: 18px;
  }
  .record {
    padding: 15px 18px 20px;
  }
  .record h2 {
    font-size: 25px;
  }
  .record__layout {
    grid-template-columns: 1fr;
  }
  .record__videos {
    max-width: 520px;
    margin: 0 auto;
  }
  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
    width: calc(100% - 30px);
    padding: 22px 0;
  }
  .site-footer__logo {
    width: 190px;
  }
  .site-footer__back {
    padding-left: 0;
    border-left: 0;
    text-align: right;
  }
  .site-footer__copyright {
    grid-column: 1/-1;
    text-align: center;
  }
}
@media (max-width: 520px) {
  .site-header__inner {
    min-height: 58px;
  }
  .site-header__logo {
    width: 156px;
  }
  .site-header__back {
    font-size: 11px;
  }
  .hero__eyebrow {
    font-size: 17px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .important-notice {
    padding: 18px 18px 21px;
    border-width: 2px;
    outline-width: 1px;
    outline-offset: -7px;
  }
  .important-notice__label {
    font-size: 20px;
  }
  .article-section {
    padding-top: 18px;
  }
  .article-section h2 {
    padding-left: 12px;
    border-left-width: 6px;
    font-size: 21px;
  }
  .caution {
    display: block;
  }
  .caution__icon {
    margin: 0 auto 8px;
  }
  .caution__title {
    text-align: center;
  }
  .closing-message {
    padding: 0 8px;
  }
  .closing-message p {
    font-size: 20px;
  }
  .record h2 {
    display: block;
    font-size: 22px;
  }
  .record h2::after {
    display: block;
    margin-top: 5px;
  }
  .record__videos {
    gap: 12px;
  }
  .video-card figcaption {
    font-size: 12px;
  }
  .timeline {
    margin-left: 5px;
  }
  .site-footer__inner {
    display: flex;
    flex-direction: column;
  }
  .site-footer__back {
    text-align: center;
  }
}