body {
  font-family: "Noto Sans JP", sans-serif;
  color: #333;
  line-height: 1.6;
  background-color: #fff;
}
h1 {
  font-size: 2rem;
  font-weight: 600;
}
h2 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.5;
  border-inline-start: 0.25em solid #e08ca1;
  padding-inline-start: 1ch;
}

.main {
  margin-top: 90px;
}
.br-sp {
  display: none;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 1rem;
  margin-top: 3rem;
}

.site-header {
  background-color: #fff;
  border-bottom: 1px solid #eee;
  position: fixed;
  top: 0;
  z-index: 100;
  width: 100%;
  padding: 0 4%;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 60px;
  max-width: 960px;
  margin: 0 auto;
}

header .inner {
  display: none;
}
header .toggle-btn {
  display: none;
}
header .mask {
  display: none;
}

.logo img {
  display: block;
}
/* --- ナビゲーション --- */
.nav-menu {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-menu ul {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-menu a {
  text-decoration: none;
  color: #333;
  font-weight: bold;
}

.nav-menu a:hover {
  color: #67adc1;
}

.hamburger {
  display: none;
  position: relative;
  top: auto;
  right: auto;
  margin-left: auto;
  z-index: 100;
  width: 48px;
  height: 48px;
  border: none;
  background: transparent;
  cursor: pointer;
}
.hamburger__line {
  position: absolute;
  top: 2px;
  left: 11px;
  width: 26px;
  height: 2px;
  background-color: #333;
  transition: all 0.4s;
}
.hamburger__line:nth-of-type(1) {
  top: 14px;
}
.hamburger__line:nth-of-type(2) {
  top: 23px;
}
.hamburger__line:nth-of-type(3) {
  top: 32px;
}
.hamburger.active .hamburger__line:nth-of-type(1) {
  transform: translateY(9px) rotate(-45deg);
}
.hamburger.active .hamburger__line:nth-of-type(2) {
  opacity: 0;
}
.hamburger.active .hamburger__line:nth-of-type(3) {
  transform: translateY(-9px) rotate(45deg);
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    height: 100vh;
    background: #fff;
    box-shadow: 2px 0 4px rgba(0, 0, 0, 0.1);
    flex-direction: column;
    align-items: center;
    padding: 100px 0 0 0;
    transform: translateX(100%);
    transition: transform 0.4s;
    z-index: 90;
    width: 250px;
  }
  .nav-menu.active {
    transform: translateX(0);
  }
  .nav-menu ul {
    width: 100%;
    padding: 0;
    margin: 0;
    list-style: none;
    flex-direction: column;
    gap: 0;
  }
  .nav-menu li {
    width: 100%;
    border-bottom: 1px solid #eee;
  }
  .nav-menu a {
    display: block;
    padding: 15px 20px;
    color: #333;
    text-decoration: none;
  }
  .hamburger {
    display: block;
    position: fixed;
    right: 0;
    top: 6px;
  }
  .nav-wrapper {
    display: none;
  }
  .nav-wrapper.active {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    z-index: 10;
    opacity: 0.5;
  }
}

.main-visual {
  position: relative;
  margin-top: 60px;
}

.main-visual img {
  width: 100%;
  height: auto;
}

.mv-pc {
  display: block;
  width: 100%;
  height: auto;
}
.mv-mob {
  display: none;
  width: 100%;
  height: auto;
}

.visual-text {
  position: absolute;
  bottom: 10%;
  left: 5%;
  color: white;
  text-shadow: 0 0 8px rgba(0, 0, 0, 0.8);
}

.visual-text h2 {
  font-size: 2rem;
  font-weight: bold;
}

.visual-text p {
  font-size: 1rem;
}

.section-title {
  font-size: 1.25rem;
  margin: 2rem 0 1rem;
  font-weight: bold;
  line-height: 1.5;
}

.news-list {
  list-style: none;
  padding: 0;
}
.news-list a {
  color: inherit;
  text-decoration: none;
}
.news-list li {
  padding: 0.8rem 0;
  border-bottom: 1px solid #eee;
}

.news-list time {
  font-weight: bold;
  margin-right: 1rem;
  color: #67adc1;
}

.theme-section img.theme-image {
  max-width: 300px;
  display: block;
  margin: 1rem 0;
}

.theme-section h3 {
  font-size: 1.4rem;
  margin-top: 1rem;
  text-align: left;
}

.theme-section p {
  text-align: left;
}

.theme-content {
  display: flex;
  gap: 30px;
  align-items: center;
}

.theme-poster {
  flex: 3;
}

.theme-poster img {
  width: 100%;
  height: auto;
  border-radius: 8px;
}

.theme-text {
  flex: 7;
}

.dashed {
  border: none;
  border-bottom: 2px dashed rgb(204, 204, 204);
}
.iinkai {
  margin-bottom: 2rem;
}

.site-footer {
  background-color: #f9f9f9;
  padding: 2rem 1rem;
  font-size: 0.9rem;
  margin-top: 3rem;
}
.footer-container {
  max-width: 960px;
  margin: 0 auto;
}

.footer-info p {
  margin: 0.3rem 0;
}

.footer-sns img {
  width: 24px;
  margin-right: 0.5rem;
}

.notice-container {
  display: flex;
  max-width: 960px;
  margin: 0 auto;
  padding: 20px;
  gap: 40px;
}

.notice-sidebar {
  flex: 0 0 300px;
  padding-left: 16px;
}

.notice-sidebar h3 {
  margin-bottom: 16px;
}

.notice-news-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.notice-news-list li {
  margin-bottom: 12px;
}

.notice-news-list a {
  text-decoration: none;
  color: #333;
  font-weight: bold;
}

.notice-news-list a:hover {
  color: #79bfd3;
  text-decoration: underline;
}

.notice-content {
  flex: 1;
}

.notice-news-item {
  border-bottom: 1px solid #ddd;
  padding-bottom: 20px;
  margin-bottom: 20px;
}

.notice-news-item time {
  display: block;
  color: #888;
  font-size: 0.9em;
  margin-bottom: 6px;
}

.notice-news-item h3 {
  margin: 0 0 10px 0;
  font-size: 1.4em;
}

.notice-news-item p {
  margin: 0;
}

@media (max-width: 768px) {
  h1 {
    font-size: 1.5rem;
  }
  h2 {
    font-size: 1.25rem;
  }
  .br-sp {
    display: block;
  }
  .mv-pc {
    display: none;
  }
  .mv-mob {
    display: block;
  }

  .theme-content {
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
  }
  .theme-poster,
  .theme-text {
    width: 100%;
  }
  .notice-container {
    flex-direction: column;
    gap: 20px;
    padding: 15px;
  }
  .notice-sidebar {
    display: none;
    width: 100%;
    padding-left: 0;
    order: 2;
  }
  .notice-content {
    width: 100%;
    order: 1;
  }
}