:root {
  --color-primary: #5d3029;
  --color-primary-light: #fdf2f2;
  --color-text-main: #1f2937;
  --color-text-sub: #4b5563;
  --color-text-light: #9ca3af;
  --color-bg-base: #ffffff;
  --color-bg-gray: #f9fafb;
  --color-border: #e5e7eb;
  --font-family-base: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, sans-serif;
  --container-width: 1200px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 32px;
  --spacing-xl: 64px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --transition-base: 0.3s ease;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  height: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-base);
  color: var(--color-text-main);
  background-color: var(--color-bg-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-base);
}

ul {
  list-style: none;
}

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

button {
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-xl);
  color: var(--color-text-main);
  position: relative;
}
@media (min-width: 768px) {
  .section-title {
    font-size: 1.875rem;
  }
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  transform: translateY(0);
}
.header.is-scrolled {
  /* スタイル変更なし - 動かないようにする */
}
.header.is-hidden {
  transform: translateY(-100%);
}
.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}
.logo__mark {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.logo__ihj {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: bold;
  line-height: 1.2;
}
.logo__img {
  height: 24px;
  width: auto;
  display: block;
}
.logo__badge {
  background-color: var(--color-primary);
  color: #fff;
  padding: 2px 4px;
  border-radius: 2px;
  font-size: 0.65rem;
}
.logo__text-en {
  color: var(--color-text-light);
  font-weight: normal;
  font-size: 0.65rem;
}
.logo__title {
  font-size: 1rem;
  font-weight: bold;
  margin-top: 4px;
}
@media (min-width: 768px) {
  .logo__title {
    font-size: 1.25rem;
  }
}

.nav {
  display: none;
}
@media (min-width: 768px) {
  .nav {
    display: flex;
    gap: 40px;
    align-items: center;
    margin-left: auto;
    margin-right: 24px;
  }
}
.nav__item {
  position: relative;
}
.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-sub);
  position: relative;
  display: inline-block;
  padding: 8px 0;
  cursor: pointer;
}
.nav__link:hover {
  color: var(--color-primary);
}
.nav__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 8px;
  background-color: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  z-index: 100;
  padding: 8px 0;
}
.nav__item:hover .nav__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav__dropdown-link {
  display: block;
  padding: 12px 20px;
  font-size: 0.875rem;
  color: var(--color-text-sub);
  transition: background-color var(--transition-base), color var(--transition-base);
}
.nav__dropdown-link:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}

.lang-switcher {
  display: none;
}
@media (min-width: 768px) {
  .lang-switcher {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-sub);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-base);
    margin-left: 20px;
  }
  .lang-switcher:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: var(--color-primary-light);
  }
}
.lang-switcher__text {
  font-weight: 600;
}

.menu-toggle {
  display: block;
  width: 30px;
  height: 30px;
  position: relative;
  z-index: 1100;
}
@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }
}
.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-text-main);
  position: absolute;
  left: 0;
  transition: var(--transition-base);
}
.menu-toggle span:nth-child(1) {
  top: 4px;
}
.menu-toggle span:nth-child(2) {
  top: 14px;
}
.menu-toggle span:nth-child(3) {
  top: 24px;
}
.menu-toggle.is-active span:nth-child(1) {
  transform: rotate(45deg);
  top: 14px;
}
.menu-toggle.is-active span:nth-child(2) {
  opacity: 0;
}
.menu-toggle.is-active span:nth-child(3) {
  transform: rotate(-45deg);
  top: 14px;
}

.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background-color: #fff;
  z-index: 1000;
  padding-top: 80px;
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-y: auto;
}
.mobile-menu.is-active {
  right: 0;
}
.mobile-menu__close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-main);
  cursor: pointer;
  z-index: 1001;
}
.mobile-menu__close:hover {
  color: var(--color-primary);
}
.mobile-menu__link {
  font-size: 1rem;
  padding: 14px 16px;
  color: var(--color-text-main);
  width: 100%;
  text-align: center;
  border-bottom: 1px solid var(--color-bg-gray);
}
.mobile-menu__link--lang {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
  margin-top: 8px;
}

.hero {
  padding-top: 140px;
  padding-bottom: 80px;
  background-color: var(--color-bg-gray);
  background-image: radial-gradient(var(--color-primary) 1px, transparent 1px);
  background-size: 20px 20px;
  background-position: 0 0;
  position: relative;
}
.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(249, 250, 251, 0.9);
  z-index: 0;
}
.hero > .container {
  position: relative;
  z-index: 1;
  text-align: center;
}
.hero__tag {
  display: inline-block;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: bold;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}
.hero__title {
  font-size: 2rem;
  line-height: 1.3;
  margin-bottom: 32px;
  font-weight: 700;
}
@media (min-width: 768px) {
  .hero__title {
    font-size: 3.5rem;
  }
}
.hero__title span {
  display: block;
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--color-text-sub);
  margin-top: 12px;
}
@media (min-width: 768px) {
  .hero__title span {
    font-size: 1.75rem;
  }
}
.hero__desc {
  max-width: 600px;
  margin: 0 auto 40px;
  color: var(--color-text-sub);
  font-size: 1rem;
}
.hero__visual {
  width: 100%;
  height: 250px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}
.hero__visual-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
@media (min-width: 768px) {
  .hero__visual {
    height: 400px;
  }
}

.news {
  padding: var(--spacing-xl) 0;
  background-color: #fff;
}
.news__header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 32px;
}
.news__header-line {
  width: 30px;
  height: 2px;
  background-color: var(--color-primary);
}
.news__title {
  font-size: 1.5rem;
  font-weight: bold;
}
.news__list {
  max-width: 800px;
  margin: 0 auto;
}
.news__item {
  display: flex;
  flex-direction: column;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-bg-gray);
}
@media (min-width: 768px) {
  .news__item {
    flex-direction: row;
    align-items: flex-start;
    gap: 24px;
  }
}
.news__date {
  font-family: monospace;
  color: var(--color-text-light);
  font-size: 0.875rem;
  min-width: 100px;
  margin-bottom: 4px;
}
.news__text {
  color: var(--color-text-sub);
  font-size: 0.95rem;
}
.news__text a {
  color: #dc2626;
  text-decoration: underline;
}

.about {
  padding: var(--spacing-xl) 0;
  background-color: var(--color-bg-gray);
}
.about__content {
  background-color: #fff;
  padding: 32px;
  border-radius: var(--radius-lg);
  max-width: 800px;
  margin: 0 auto;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}
@media (min-width: 768px) {
  .about__content {
    padding: 48px;
  }
}
.about__text {
  margin-bottom: 24px;
  line-height: 1.8;
  color: var(--color-text-sub);
}
.about__text:last-child {
  margin-bottom: 0;
}
.about__text a {
  color: #dc2626;
  text-decoration: underline;
}
.footer__text a {
  color: #dc2626;
  text-decoration: underline;
}
.about__content--cohost {
  margin-top: 48px;
}

.project {
  padding: var(--spacing-xl) 0;
  background-color: #fff;
}
.project__cohost {
  margin-bottom: 80px;
  text-align: center;
}
.project__subtitle {
  font-size: 0.875rem;
  color: var(--color-text-light);
  letter-spacing: 0.1em;
  margin-bottom: 32px;
  display: block;
}

.logos {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 48px;
}

.logo-placeholder {
  width: 120px;
  height: 120px;
  background-color: var(--color-bg-gray);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
  font-weight: bold;
  transition: var(--transition-base);
}
.logo-placeholder:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.logo-img {
  max-width: 200px;
  max-height: 120px;
  width: auto;
  height: auto;
  object-fit: contain;
}

.project__members {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto;
}
.member-card {
  width: 100%;
}
@media (min-width: 640px) {
  .project__members {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
  }
}
@media (min-width: 1200px) {
  .project__members {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, auto);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
  }
  .member-card:nth-child(1) {
    grid-column: 1;
    grid-row: 1;
  }
  .member-card:nth-child(2) {
    grid-column: 2;
    grid-row: 1;
  }
  .member-card:nth-child(3) {
    grid-column: 3;
    grid-row: 1;
  }
  .member-card:nth-child(4) {
    grid-row: 2;
    margin-top: 10px;
  }
  .member-card:nth-child(5) {
    grid-row: 2;
    margin-top: 10px;
  }
}

.member-card {
  text-align: center;
}
.member-card__img {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  margin: 0 auto 16px;
  display: block;
  object-fit: cover;
  background-color: var(--color-border);
}
@media (min-width: 640px) {
  .member-card__img {
    width: 140px;
    height: 140px;
  }
}
@media (min-width: 1200px) {
  .member-card__img {
    width: 160px;
    height: 160px;
  }
}
.member-card__name {
  font-weight: bold;
  font-size: 1.125rem;
  margin-bottom: 4px;
  color: var(--color-text-main);
}
.member-card__role {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-bottom: 12px;
}
.member-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-sub);
  text-align: left;
}

.reports {
  padding: var(--spacing-xl) 0;
  background-color: var(--color-bg-gray);
}
.reports__group {
  margin-bottom: 60px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}
.reports__group-title {
  font-size: 1.5rem;
  font-weight: bold;
  border-left: 4px solid var(--color-primary);
  padding-left: 16px;
  margin-bottom: 32px;
}
.reports__group-title--gray {
  border-color: #9ca3af;
}
.reports__group-title--dark {
  border-color: #1f2937;
}

.report-card {
  background-color: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  margin-bottom: 24px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.report-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}
@media (min-width: 768px) {
  .report-card {
    flex-direction: row;
  }
}
.report-card__thumb {
  width: 100%;
  height: 180px;
  background-color: #cbd5e1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  overflow: hidden;
  position: relative;
}
.report-card__thumb-img {
  width: auto !important;
  height: auto !important;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  margin: auto;
}
.report-card__thumb--dark {
  background-color: #1f2937;
}
.report-card__thumb--gray {
  background-color: #9ca3af;
}
@media (min-width: 768px) {
  .report-card__thumb {
    width: 300px;
    height: 100%;
    flex-shrink: 0;
  }
}
.report-card__body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.report-card__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.report-card__label {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.7rem;
  font-weight: bold;
  padding: 2px 6px;
  border-radius: 4px;
}
.report-card__date {
  font-size: 0.75rem;
  color: var(--color-text-light);
}
.report-card__title {
  font-size: 1.125rem;
  font-weight: bold;
  margin-bottom: 12px;
  line-height: 1.4;
}
.report-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-sub);
  margin-bottom: 16px;
}
.report-card__desc a {
  color: #dc2626;
  text-decoration: underline;
}
.report-card__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: bold;
  color: var(--color-text-main);
  transition: color var(--transition-base);
}
.report-card__btn:hover {
  color: var(--color-primary);
}

.archive {
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--color-border);
  background-color: #fff;
}
.archive__list {
  max-width: 800px;
  margin: 0 auto;
}
.archive__item {
  display: flex;
  flex-direction: column;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-bg-gray);
  font-size: 0.875rem;
}
@media (min-width: 768px) {
  .archive__item {
    flex-direction: row;
    align-items: center;
    gap: 16px;
  }
}
.archive__date {
  color: var(--color-text-light);
  font-family: monospace;
  min-width: 90px;
}
.archive__text {
  color: var(--color-text-sub);
}

.footer {
  background-color: #fff;
  border-top: 1px solid var(--color-primary);
  color: var(--color-text-main);
  padding: 64px 0 32px;
  text-align: center;
}
.footer__contact {
  margin-bottom: 48px;
}
.footer__title {
  font-size: 1.125rem;
  font-weight: bold;
  margin-bottom: 24px;
  display: inline-block;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 8px;
  color: var(--color-text-main);
}
.footer__text {
  font-size: 0.875rem;
  color: var(--color-text-sub);
  margin-bottom: 16px;
}
.footer__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 32px;
  border: 1px solid var(--color-primary);
  border-radius: 999px;
  color: var(--color-primary);
  font-size: 0.875rem;
  margin-top: 16px;
  transition: all var(--transition-base);
}
.footer__btn:hover {
  background-color: var(--color-primary);
  color: #fff;
}
.footer__links {
  margin-bottom: 32px;
}
.footer__links a {
  font-size: 0.75rem;
  color: var(--color-text-sub);
}
.footer__links a:hover {
  color: var(--color-primary);
}
.footer__logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  opacity: 0.8;
  margin-bottom: 32px;
}
.footer__logo-img {
  width: 200px;
  height: auto;
  display: block;
}
.footer__logo-icon {
  background-color: var(--color-primary);
  color: #fff;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  border-radius: 2px;
  font-size: 0.75rem;
  margin-bottom: 8px;
}
.footer__copy {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

.icon {
  width: 1em;
  height: 1em;
  display: inline-block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/*# sourceMappingURL=main.css.map */