/* ============================================
   Detail / Subpage (v2: simple & pop)
   ============================================ */

.sub-hero {
  padding: 140px var(--gutter) 70px;
  background: var(--paper-2);
  color: var(--ink);
  position: relative;
  overflow: hidden;
}
.sub-hero::before {
  content: "";
  position: absolute;
  right: -8%;
  top: -14%;
  width: 36vw;
  height: 36vw;
  max-width: 460px;
  max-height: 460px;
  background: var(--accent, var(--pop-red));
  opacity: 0.1;
  border-radius: 50%;
  z-index: 0;
}
.sub-hero > .container { position: relative; z-index: 1; }

.crumb {
  font-size: 12px;
  font-weight: 700;
  color: var(--body);
  margin-bottom: 28px;
  letter-spacing: 0.02em;
}
.crumb a { color: var(--body); transition: color 0.2s; }
.crumb a:hover { color: var(--pop-red); }
.crumb span { margin: 0 8px; opacity: 0.4; }

.sub-hero__head {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 760px;
}
.sub-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border-radius: 3px;
  background: var(--accent, var(--pop-red));
  color: #fff;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  align-self: flex-start;
}
.sub-hero.c-sponsor .sub-hero__badge { color: var(--ink); }

.sub-hero__title {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(30px, 4.4vw, 56px);
  line-height: 1.3;
  letter-spacing: 0.01em;
}

.sub-hero__lede {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 2;
  color: var(--body);
  max-width: 58ch;
}

.sub-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 0;
}
.sub-hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 28px;
  background: var(--accent, var(--blue));
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.08em;
  border: 2px solid var(--accent, var(--blue));
  transition: background 0.2s, transform 0.2s;
}
.sub-hero__cta:hover { background: var(--ink); border-color: var(--ink); transform: translateY(-2px); }
.sub-hero__cta::after { content: "→"; }
.sub-hero__cta--ghost {
  background: transparent;
  color: var(--accent, var(--blue));
}
.sub-hero__cta--ghost:hover { background: var(--accent, var(--blue)); color: #fff; transform: translateY(-2px); }
.sub-hero.c-sponsor .sub-hero__cta { color: var(--ink); }
.sub-hero.c-sponsor .sub-hero__cta--ghost { color: var(--ink); }

/* News list */
.news-list {
  max-width: var(--max);
  margin: 0 auto;
  border-top: 1px solid var(--line);
}
.news-row {
  display: grid;
  grid-template-columns: 90px 110px 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 20px 8px;
  background: transparent;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  transition: padding 0.2s, background 0.2s;
}
.news-row:hover { padding-left: 18px; background: var(--paper-2); }
.news-date {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--pop-red);
  letter-spacing: 0.04em;
  line-height: 1;
}
.news-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 3px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  color: var(--ink);
  justify-self: start;
}
.news-title {
  font-weight: 500;
  font-size: 14.5px;
  line-height: 1.7;
}
.news-arrow {
  width: 18px; height: 18px;
  position: relative;
}
.news-arrow::after {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 18px; height: 2px;
  background: var(--ink);
  transform: translateY(-50%);
}
.news-arrow::before {
  content: "";
  position: absolute;
  right: 0; top: 50%;
  width: 7px; height: 7px;
  border-top: 2px solid var(--ink);
  border-right: 2px solid var(--ink);
  transform: translateY(-50%) rotate(45deg);
}

/* Q&A */
.qa-list {
  max-width: var(--max);
  margin: 0 auto;
  border-top: 1px solid var(--line);
}
.qa-contact {
  display: flex;
  justify-content: center;
  margin: 36px auto 0;
}
.qa-item {
  background: transparent;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  overflow: hidden;
  transition: background 0.2s;
}
.qa-item:hover { background: var(--paper-2); }
.qa-item.is-open { background: #fff; }
.qa-q {
  width: 100%;
  text-align: left;
  padding: 22px 8px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
}
.qa-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 22px;
  font-weight: 900;
  color: var(--pop-red);
  letter-spacing: 0.05em;
  line-height: 1;
  white-space: nowrap;
}
.qa-mark__q {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #2B6FD6;
  color: #fff;
  font-family: "Arial Rounded MT Bold", "Avenir Next", "Helvetica Neue", Arial, sans-serif;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1;
}
.qa-mark__num {
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--pop-red);
  letter-spacing: 0.04em;
}
.qa-q > span:nth-child(2) {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 15px;
  line-height: 1.6;
  letter-spacing: 0.01em;
}
.qa-plus {
  width: 22px; height: 22px;
  position: relative;
  border-radius: 3px;
  background: transparent;
  border: 1px solid var(--line-strong);
  transition: background 0.2s, border-color 0.2s;
}
.qa-plus::before, .qa-plus::after {
  content: "";
  position: absolute;
  background: var(--ink);
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  transition: transform 0.3s ease;
}
.qa-plus::before { width: 12px; height: 2px; border-radius: 2px; }
.qa-plus::after { width: 2px; height: 12px; border-radius: 2px; }
.qa-item.is-open .qa-plus { background: var(--pop-red); border-color: var(--pop-red); }
.qa-item.is-open .qa-plus::before,
.qa-item.is-open .qa-plus::after { background: #fff; }
.qa-item.is-open .qa-plus::after { transform: translate(-50%, -50%) rotate(90deg); }

.qa-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.77, 0, 0.18, 1), padding 0.3s ease;
}
.qa-item.is-open .qa-a {
  max-height: 500px;
  padding: 0 8px 22px 56px;
}
.qa-a p {
  font-size: 14px;
  line-height: 1.95;
  color: var(--body);
  margin: 0;
  max-width: 62ch;
}

/* Pager */
.pager {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter) 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--ink);
}
.pager a {
  padding: 32px 28px;
  background: transparent;
  border-right: 1px solid var(--line);
  border-radius: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: background 0.2s;
}
.pager a:last-child { border-right: none; text-align: right; align-items: flex-end; }
.pager a:hover { background: var(--paper-2); }
.pager .dir {
  font-size: 12px;
  font-weight: 700;
  color: var(--pop-red);
  letter-spacing: 0.04em;
}
.pager .name {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(18px, 2.2vw, 24px);
  letter-spacing: 0.01em;
}

/* Gallery */
.gallery {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.gallery figure {
  margin: 0;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
  background: var(--paper-2);
}
.gallery img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.22, 0.61, 0.36, 1);
}
.gallery figure:hover img { transform: scale(1.06); }
.gallery figcaption {
  position: absolute;
  left: 14px; bottom: 12px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(30,37,71,0.7);
  letter-spacing: 0.02em;
}

/* Press */
.press-list {
  max-width: var(--max);
  margin: 0 auto;
  list-style: none;
  padding: 0;
  border-top: 1px solid var(--line);
}
.press-list li {
  display: grid;
  grid-template-columns: 90px 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 18px 8px;
  background: transparent;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  transition: padding 0.2s, background 0.2s;
}
.press-list li:hover { padding-left: 18px; background: var(--paper-2); }
.press-date {
  font-family: var(--font-display);
  font-size: 20px;
  color: var(--pop-red);
  letter-spacing: 0.04em;
  line-height: 1;
}
.press-title { font-weight: 500; font-size: 14.5px; line-height: 1.7; }
.press-src {
  font-size: 10.5px;
  font-weight: 700;
  color: var(--body);
  padding: 4px 10px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  letter-spacing: 0.04em;
}

/* Video */
.video-frame {
  max-width: var(--max);
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  display: grid;
  place-items: center;
  cursor: pointer;
  border: 1px solid var(--line);
}
.video-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(30,37,71,0.25), rgba(30,37,71,0.6)),
    url("../assets/images/platform.jpg") center/cover no-repeat;
}
.video-frame .play {
  position: relative;
  z-index: 1;
  width: 74px; height: 74px;
  border-radius: 50%;
  background: var(--pop-red);
  color: #fff;
  display: grid;
  place-items: center;
  transition: transform 0.25s, background 0.25s;
}
.video-frame:hover .play { transform: scale(1.06); background: var(--pop-red-2); }
.video-frame .play svg { width: 22px; height: 22px; fill: currentColor; }
.video-meta {
  position: absolute;
  left: 20px; bottom: 18px;
  z-index: 1;
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 6px 14px;
  background: rgba(255,255,255,0.2);
  border-radius: 999px;
  backdrop-filter: blur(6px);
}

/* docs strip — 出展要項 / 出店の手引き PDFダウンロード */
.docs-strip {
  padding: 72px var(--gutter);
  background: var(--paper-2);
  border-top: 1px solid rgba(13, 27, 60, 0.08);
}
.docs-strip__inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
.docs-strip__head {
  display: grid;
  gap: 8px;
}
.docs-strip__label {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--accent, var(--blue));
  text-transform: uppercase;
}
.docs-strip__title {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(22px, 2.4vw, 28px);
  letter-spacing: 0.04em;
  color: var(--ink);
  margin: 0;
}
.docs-strip__sub {
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--body);
  margin: 6px 0 0;
  max-width: 60ch;
}
.docs-strip__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.doc-card {
  display: grid;
  grid-template-columns: 56px 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 22px 24px;
  background: #fff;
  border: 1px solid rgba(13, 27, 60, 0.1);
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.18s, box-shadow 0.18s, border-color 0.18s;
}
.doc-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -18px rgba(13, 27, 60, 0.25);
  border-color: var(--accent, var(--blue));
}
.doc-card__icon {
  width: 56px; height: 56px;
  display: grid; place-items: center;
  background: var(--accent, var(--blue));
  color: #fff;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
}
.doc-card__body { display: grid; gap: 4px; }
.doc-card__title {
  font-weight: 700;
  font-size: 15.5px;
  letter-spacing: 0.04em;
}
.doc-card__meta {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--body-2);
}
.doc-card__action {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--accent, var(--blue));
  display: inline-flex; align-items: center; gap: 6px;
}
.doc-card__action::after { content: "↓"; font-size: 14px; }

/* responsive */
@media (max-width: 900px) {
  .news-row { grid-template-columns: auto auto; gap: 10px; }
  .news-title { grid-column: 1 / -1; }
  .news-arrow { grid-column: 1 / -1; justify-self: start; }
  .pager { grid-template-columns: 1fr; }
  .pager a:last-child { text-align: left; align-items: flex-start; }
  .gallery { grid-template-columns: 1fr 1fr; }
  .press-list li { grid-template-columns: auto 1fr; }
  .press-src { grid-column: 2; justify-self: start; }
  .docs-strip__grid { grid-template-columns: 1fr; }
  .doc-card { grid-template-columns: 48px 1fr; gap: 14px; padding: 18px 18px; }
  .doc-card__icon { width: 48px; height: 48px; font-size: 11px; }
  .doc-card__action { grid-column: 2; justify-self: start; margin-top: 4px; }
}