.u-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.p-seminar-archive-hero {
  padding: calc(var(--header-height) + 32px) 0 88px;
}

.p-seminar-archive-hero .c-breadcrumb {
  margin-bottom: 112px;
}

.p-seminar-archive {
  padding-bottom: 200px;
}

.p-seminar-archive__inner {
  width: min(100%, 880px);
  margin-inline: auto;
}

.p-seminar-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 72px;
}

.p-seminar-filter__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 80px;
  min-height: 29px;
  padding: 4px 14px;
  border: 1px solid var(--color-border-strong);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  letter-spacing: 0.08em;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.p-seminar-filter__item:hover,
.p-seminar-filter__item.is-active {
  background: var(--color-text);
  color: var(--color-white);
}

.p-seminar-archive__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border-light);
}

.p-seminar-card[hidden] {
  display: none;
}

.p-seminar-card {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  align-items: center;
  gap: 24px;
  padding: 32px 0;
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text);
}

.p-seminar-card:hover .p-seminar-card__title {
  color: rgba(54, 54, 59, 0.68);
}

.p-seminar-card__thumb {
  width: 180px;
  aspect-ratio: 240 / 168;
  background: var(--color-section-background-light);
  overflow: hidden;
}

.p-seminar-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.p-seminar-card__body {
  min-width: 0;
}

.p-seminar-card__title {
  font-size: var(--font-size-lg-plus);
  line-height: var(--line-height-normal);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.1em;
  transition: color 0.2s ease;
}

.p-seminar-card__meta {
  margin-top: 12px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 0;
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  letter-spacing: 0.08em;
}

.p-seminar-card__date,
.p-seminar-card__tag {
  font-family: var(--font-family-number);
}

.p-seminar-card__date {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 21px;
  white-space: nowrap;
}

.p-seminar-card__date-separator {
  font-family: var(--font-family-display-en);
}

.p-seminar-card__category {
  display: inline-flex;
  align-items: center;
  min-height: 21px;
  margin-left: 8px;
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  letter-spacing: 0.08em;
  transform: translateY(-1px);
}

.p-seminar-card__tag {
  min-height: 18px;
  margin-left: 16px;
  padding: 0 4px;
  border: 0.5px solid #AA1A48;
  color: #AA1A48;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xs);
  line-height: var(--line-height-normal);
}

.p-seminar-pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 80px;
}

.p-seminar-pager__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border-strong);
  border-radius: 50%;
  color: var(--color-text);
  font-family: var(--font-family-number);
  font-size: var(--font-size-md);
  line-height: var(--line-height-none);
  transition: color 0.2s ease, background-color 0.2s ease;
}

.p-seminar-pager__item:hover,
.p-seminar-pager__item.is-current {
  background: var(--color-text);
  color: var(--color-white);
}

.p-seminar-pager__item--next img,
.p-seminar-pager__item--prev img {
  width: 11px;
  height: auto;
  transition: filter 0.2s ease;
}

.p-seminar-pager__item--prev img {
  transform: scaleX(-1);
}

.p-seminar-pager__item--next:hover img,
.p-seminar-pager__item--prev:hover img {
  filter: invert(1);
}

.p-seminar-pager__ellipsis {
  font-family: var(--font-family-number);
  font-size: var(--font-size-md);
}

.p-about {
  padding-block: 120px;
  background: var(--color-section-background-light);
}

.p-about__grid {
  margin-top: 80px;
}

@media (max-width: 1024px) {
  .p-seminar-archive-hero {
    padding-bottom: 72px;
  }

  .p-seminar-archive-hero .c-breadcrumb {
    margin-bottom: 88px;
  }

  .p-seminar-archive__inner {
    width: min(100%, 760px);
  }
}

@media (max-width: 767px) {
  .p-seminar-archive-hero {
    padding: calc(var(--header-height) + 20px) 0 56px;
  }

  .p-seminar-archive-hero .c-breadcrumb {
    margin-bottom: 72px;
  }

  .p-seminar-archive {
    padding-bottom: 96px;
  }

  .p-seminar-filter {
    gap: 8px;
    margin-bottom: 48px;
  }

  .p-seminar-filter__item {
    min-width: 72px;
    min-height: 28px;
    padding-inline: 10px;
  }

  .p-seminar-card {
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 16px;
    padding: 24px 0;
  }

  .p-seminar-card__thumb {
    width: 112px;
  }

  .p-seminar-card__title {
    font-size: var(--font-size-lg-plus);
    letter-spacing: 0.08em;
  }

  .p-seminar-card__meta {
    margin-top: 8px;
    gap: 6px 8px;
    font-size: var(--font-size-md);
  }

  .p-seminar-card__category {
    margin-left: 0;
    font-size: var(--font-size-md);
  }

  .p-seminar-card__tag {
    margin-left: 0;
    font-size: var(--font-size-xs);
  }

  .p-seminar-pager {
    gap: 8px;
    margin-top: 48px;
  }

  .p-seminar-pager__item {
    width: 36px;
    height: 36px;
  }

  .p-about {
    padding-block: var(--sp-section-padding);
  }

  .p-about__grid {
    margin-top: var(--sp-section-gap);
  }
}

/* p-site-policy-about: lower-parts がデフォルトで生成するクラス（seminar.css未定義のため追記） */
.p-site-policy-about {
  padding-block: 120px;
  background: var(--color-section-background-light);
}

.p-site-policy-about__grid {
  margin-top: 72px;
}

.p-site-policy-about__grid.c-lower-about-card-list {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 767px) {
  .p-site-policy-about {
    padding-block: var(--sp-section-padding);
  }

  .p-site-policy-about__grid {
    margin-top: var(--sp-section-gap);
  }

  .p-site-policy-about__grid.c-lower-about-card-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}