:root {
  --color-page: #f5f4f0;
  --color-surface: #ffffff;
  --color-ink: #272a35;
  --color-muted: #667085;
  --color-border: #e3e5e9;
  --color-accent: #5d63b9;
  --color-accent-hover: #4c52a3;
  --color-accent-soft: #eef0ff;
  --color-upcoming: #2864a8;
  --color-upcoming-soft: #eaf3ff;
  --color-live: #c64755;
  --color-live-soft: #fff0f2;
  --color-archive: #7b5b00;
  --color-archive-soft: #fff2b8;
  --color-official-link: #343741;
  --color-official-link-hover: #20232b;
  --color-category-main: #2864a8;
  --color-category-main-hover: #1f528b;
  --color-category-main-soft: #eaf3ff;
  --color-category-break: #b83245;
  --color-category-break-hover: #942838;
  --color-category-break-soft: #fff0f2;
  --color-category-special: #287a55;
  --color-category-special-hover: #1f6244;
  --color-category-special-soft: #edf8f3;
  --color-category-official: #272a35;
  --color-category-official-hover: #181b22;
  --color-category-official-soft: #f0f1f3;
  --color-official-content: #e2e4e7;
  --color-category-default: #667085;
  --color-category-default-hover: #535d6c;
  --color-category-default-soft: #f5f6f7;
  --color-shadow: rgba(41, 45, 76, 0.1);
  --radius-card: 1.25rem;
  --radius-pill: 999px;
  --content-width: 1120px;
}

* { box-sizing: border-box; }

html { background: var(--color-page); scrollbar-gutter: stable; }

body {
  min-width: 320px;
  margin: 0;
  color: var(--color-ink);
  background: radial-gradient(circle at 100% 0, #e9eafd 0, transparent 30rem), var(--color-page);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.6;
}

body::before {
  position: fixed;
  z-index: 0;
  top: 1.25rem;
  right: 1.25rem;
  width: clamp(13rem, 28vw, 22rem);
  aspect-ratio: 1;
  background: url("brand-watermark.png") center / contain no-repeat;
  opacity: .1;
  pointer-events: none;
  content: "";
}

button, a { font: inherit; }

.site-shell { position: relative; z-index: 1; width: min(calc(100% - 2rem), var(--content-width)); margin: 0 auto; padding: clamp(2.5rem, 7vw, 5.5rem) 0 4rem; }

.hero { margin-bottom: clamp(2rem, 5vw, 3.75rem); }
.eyebrow { margin: 0 0 .5rem; color: var(--color-accent); font-size: .78rem; font-weight: 800; letter-spacing: .14em; }
h1, h2, h3, p { overflow-wrap: anywhere; }
h1 { margin: 0; font-size: clamp(2.25rem, 7vw, 4.25rem); letter-spacing: -.05em; line-height: 1.1; }
.title-break { display: inline; white-space: nowrap; }
.notices { min-height: 8.125rem; max-width: 55rem; margin-top: 1.35rem; padding: .9rem 1rem; border-left: 3px solid var(--color-accent); background: rgba(255,255,255,.62); }
.notices-title { margin: 0 0 .25rem; color: var(--color-accent); font-size: .82rem; font-weight: 850; letter-spacing: .08em; }
.notices-list { margin: 0; padding-left: 1.25rem; color: var(--color-muted); font-size: .92rem; }
.notices-list li + li { margin-top: .15rem; }
.notice-item-title { color: var(--color-ink); }
.section-heading { display: flex; align-items: end; justify-content: flex-end; gap: 1.25rem; margin-bottom: 1.5rem; }

.filters { display: flex; flex-wrap: wrap; gap: .5rem; justify-content: flex-end; }
.filter-button {
  min-height: 2.65rem;
  padding: .5rem .9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-ink);
  background: var(--color-surface);
  cursor: pointer;
  font-weight: 700;
}
.filter-button:hover { border-color: var(--color-accent); color: var(--color-accent); }
.filter-button.is-active { border-color: var(--color-accent); color: #fff; background: var(--color-accent); }
.filter-button:focus-visible, .youtube-link:focus-visible, .thumbnail-link:focus-visible { outline: 3px solid #252a70; outline-offset: 3px; }

.schedule-message { min-height: 1.6em; margin: 0 0 1rem; color: var(--color-muted); }
.schedule-message.is-error { padding: 1rem 1.1rem; border-left: 4px solid var(--color-live); border-radius: .5rem; color: #8a2632; background: var(--color-live-soft); }
.schedule-message.is-empty { padding: 1.25rem; border: 1px dashed var(--color-border); border-radius: var(--radius-card); background: rgba(255,255,255,.6); }

.schedule-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr)); gap: 1rem; }
.schedule-card {
  --card-category-color: var(--color-category-default);
  --card-category-hover: var(--color-category-default-hover);
  --card-category-soft: var(--color-category-default-soft);
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 100%;
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: var(--color-surface);
  box-shadow: 0 8px 24px var(--color-shadow);
}
.schedule-card.category-theme-main { --card-category-color: var(--color-category-main); --card-category-hover: var(--color-category-main-hover); --card-category-soft: var(--color-category-main-soft); }
.schedule-card.category-theme-break { --card-category-color: var(--color-category-break); --card-category-hover: var(--color-category-break-hover); --card-category-soft: var(--color-category-break-soft); }
.schedule-card.category-theme-special { --card-category-color: var(--color-category-special); --card-category-hover: var(--color-category-special-hover); --card-category-soft: var(--color-category-special-soft); }
.schedule-card.category-theme-official { --card-category-color: var(--color-category-official); --card-category-hover: var(--color-category-official-hover); --card-category-soft: var(--color-category-official-soft); }
.card-summary { min-width: 0; }
.card-details { display: flex; flex: 1; flex-direction: column; min-width: 0; }
.skeleton-card { min-height: 34rem; box-shadow: none; }
.skeleton-line { display: block; flex: none; border-radius: .25rem; background: #e9eaf0; }
.skeleton-thumbnail { width: calc(100% + 2.5rem); aspect-ratio: 16 / 9; margin: -1.25rem -1.25rem 1rem; border-radius: var(--radius-card) var(--radius-card) 0 0; }
.skeleton-date { width: 48%; height: 2.85rem; }
.skeleton-time { width: 58%; height: 1.55rem; margin-top: .65rem; }
.skeleton-category { width: 4.8rem; height: 1.8rem; margin-top: .85rem; border-radius: 0; }
.skeleton-title { width: 76%; height: 1.65rem; margin-top: .85rem; }
.skeleton-content { width: 100%; height: 2.2rem; margin-top: .75rem; }
.skeleton-description { width: 88%; height: 2.8rem; margin-top: .75rem; }
.skeleton-button { width: 7.5rem; height: 2.55rem; margin-top: auto; border-radius: .65rem; }
.schedule-card.is-live { border: 2px solid var(--color-live); box-shadow: 0 10px 28px rgba(198, 71, 85, .15); }
.schedule-card.is-live::before { position: absolute; top: 0; left: 1.25rem; width: 3.5rem; height: 4px; border-radius: 0 0 99px 99px; background: var(--color-live); content: ""; }
.thumbnail-frame { display: block; width: calc(100% + 2.5rem); aspect-ratio: 16 / 9; margin: -1.25rem -1.25rem 1rem; overflow: hidden; border-radius: var(--radius-card) var(--radius-card) 0 0; background: #17191f; }
.thumbnail-link { cursor: pointer; }
.schedule-thumbnail { display: block; width: 100%; height: 100%; object-fit: cover; }
.thumbnail-link .schedule-thumbnail { transition: transform .2s ease, opacity .2s ease; }
.thumbnail-link:hover .schedule-thumbnail { opacity: .92; transform: scale(1.015); }
.official-thumbnail-frame { background: var(--color-category-official-soft); }
.schedule-thumbnail.official-thumbnail { object-fit: contain; }
.official-thumbnail-frame:hover .schedule-thumbnail { opacity: 1; transform: none; }
.card-top { display: flex; align-items: start; justify-content: space-between; gap: .75rem; margin: .85rem 0 .75rem; }
.category-group { display: flex; flex-wrap: wrap; align-items: center; gap: .45rem; min-width: 0; }
.video-sequence { color: var(--card-category-color); font-size: .82rem; font-weight: 750; white-space: nowrap; }
.date { margin: 0; color: var(--color-accent); font-size: 1.55rem; font-weight: 850; letter-spacing: -.04em; line-height: 1.1; }
.year { display: block; margin-bottom: .3rem; color: var(--color-muted); font-size: .72rem; font-weight: 750; letter-spacing: .06em; }
.weekday { margin-left: -.12em; }
.status { flex: none; margin: 0; padding: .18rem .55rem; border-radius: var(--radius-pill); font-size: .72rem; font-weight: 850; letter-spacing: .06em; }
.status-upcoming { color: var(--color-upcoming); background: var(--color-upcoming-soft); }
.status-live { color: #9e2231; background: var(--color-live-soft); }
.status-archive { color: var(--color-archive); background: var(--color-archive-soft); }
.status-official-active { color: #fff; background: var(--color-category-official); }
.time { margin: .5rem 0 .75rem; color: var(--color-accent); font-size: 1.35rem; font-weight: 850; font-variant-numeric: tabular-nums; letter-spacing: -.03em; line-height: 1.2; }
.category { align-self: flex-start; margin: 0; padding: .2rem .6rem; border: 1px solid var(--card-category-color); border-radius: 0; color: var(--card-category-color); background: var(--card-category-soft); font-size: .82rem; font-weight: 750; }
.category-main { border-color: var(--color-category-main); color: var(--color-category-main); background: var(--color-category-main-soft); }
.category-break { border-color: var(--color-category-break); color: var(--color-category-break); background: var(--color-category-break-soft); }
.category-special { border-color: var(--color-category-special); color: var(--color-category-special); background: var(--color-category-special-soft); }
.category-official { border-color: var(--color-category-official); color: var(--color-category-official); background: var(--color-category-official-soft); }
.title { margin: 0; color: var(--color-ink); font-size: 1.22rem; font-weight: 700; line-height: 1.4; white-space: pre-line; }
.content-name {
  margin: .65rem 0 0;
  padding: .4rem .6rem;
  border-left: 3px solid var(--card-category-color);
  color: var(--color-ink);
  background: var(--card-category-soft);
  font-weight: 400;
}
.description { margin: .55rem 0 0; color: var(--color-muted); font-size: .94rem; white-space: pre-line; }
.card-footer { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: .65rem; min-height: 2.75rem; margin-top: auto; padding-top: 1.2rem; }
.updated-at { margin: 0 0 .1rem auto; color: var(--color-muted); font-size: .72rem; white-space: nowrap; }
.youtube-link { display: inline-flex; align-items: center; min-height: 2.55rem; padding: .45rem .8rem; border-radius: .65rem; color: #fff; background: var(--card-category-color); font-size: .9rem; font-weight: 800; text-decoration: none; }
.youtube-link:hover { background: var(--card-category-hover); }
.official-link { color: #fff; background: var(--card-category-color); }
.official-link:hover { background: var(--card-category-hover); }

@media (min-width: 760px) {
  .schedule-grid { grid-template-columns: 1fr; }
  .schedule-card.has-thumbnail {
    display: grid;
    grid-template-columns: minmax(17rem, 36%) minmax(0, 1fr);
    grid-template-rows: auto auto;
    gap: 1rem 1.25rem;
  }
  .schedule-card.has-thumbnail > .thumbnail-frame {
    align-self: start;
    width: 100%;
    aspect-ratio: auto;
    margin: 0;
    border-radius: .8rem;
  }
  .schedule-card.has-thumbnail > .thumbnail-frame .schedule-thumbnail {
    height: auto;
    object-fit: contain;
  }
  .schedule-card.has-thumbnail > .card-summary { grid-column: 2; grid-row: 1; }
  .schedule-card.has-thumbnail > .card-details { grid-column: 1 / -1; grid-row: 2; }
  .skeleton-card {
    display: grid;
    grid-template-columns: minmax(17rem, 36%) minmax(0, 1fr);
    gap: .65rem 1.25rem;
    min-height: 27rem;
    padding: 1.25rem;
  }
  .skeleton-card > .skeleton-thumbnail {
    grid-column: 1;
    grid-row: 1 / span 4;
    width: 100%;
    aspect-ratio: 16 / 9;
    margin: 0;
    border-radius: .8rem;
  }
  .skeleton-card > .skeleton-line:not(.skeleton-thumbnail) { grid-column: 2; }
  .skeleton-card > .skeleton-date { margin-top: 0; }
  .skeleton-card > .skeleton-content,
  .skeleton-card > .skeleton-description,
  .skeleton-card > .skeleton-button { grid-column: 1 / -1; }
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: .82rem;
}
.site-footer p { margin: 0; }
.site-footer.site-footer-centered { align-items: center; justify-content: center; text-align: center; }
.site-footer nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .65rem 1rem; }
.site-footer a, .text-link { color: var(--color-accent); font-weight: 700; text-underline-offset: .18em; }
.site-footer a:hover, .text-link:hover { color: var(--color-accent-hover); }

.info-shell { max-width: 880px; }
.info-hero { max-width: 48rem; margin-bottom: 2rem; }
.info-title { margin-bottom: .9rem; }
.info-lead { margin: 0; color: var(--color-muted); font-size: clamp(1rem, 2.5vw, 1.16rem); }
.info-nav { display: flex; flex-wrap: wrap; gap: .65rem; margin: 1.5rem 0 0; }
.info-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 2.55rem;
  padding: .45rem .8rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-ink);
  background: rgba(255,255,255,.72);
  font-weight: 750;
  text-decoration: none;
}
.info-nav a:hover { border-color: var(--color-accent); color: var(--color-accent); }
.info-content { display: grid; gap: 1rem; }
.info-section {
  padding: clamp(1.15rem, 3vw, 1.65rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  background: rgba(255,255,255,.88);
  box-shadow: 0 8px 24px var(--color-shadow);
}
.info-section h2 { margin: 0 0 .65rem; font-size: 1.2rem; letter-spacing: -.02em; }
.info-section h3 { margin: 1rem 0 .35rem; font-size: 1rem; }
.info-section p { margin: .45rem 0 0; }
.info-section ul { margin: .55rem 0 0; padding-left: 1.25rem; }
.info-section li + li { margin-top: .35rem; }
.policy-meta { color: var(--color-muted); font-size: .85rem; }
.contact-card { border-left: 4px solid var(--color-accent); }

@media (max-width: 620px) {
  body::before { top: .75rem; right: -1.75rem; width: 13rem; opacity: .065; }
  .site-shell { width: min(calc(100% - 1.25rem), var(--content-width)); padding-top: 2.4rem; }
  .title-break { display: block; }
  .notices { min-height: 12.25rem; }
  .section-heading { align-items: start; flex-direction: column; }
  .filters { width: 100%; justify-content: start; }
  .filter-button { flex: 1 1 auto; }
  .schedule-grid { grid-template-columns: 1fr; }
  .site-footer { align-items: flex-start; flex-direction: column; }
  .site-footer nav { justify-content: flex-start; }
}

@media (max-width: 480px) {
  .notices { min-height: 15.5rem; }
}

@media (max-width: 400px) {
  .notices { min-height: 17rem; }
}

@media (max-width: 350px) {
  .notices { min-height: 19.5rem; }
}

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; animation-duration: .01ms !important; } }