/* ===== About page scoped ===== */
body[data-page="about"] .history{ margin: 28px 0 64px; }
body[data-page="about"] .timeline{
  position: relative;
  background: transparent;
  color: var(--fg);
  max-width: 980px;
  margin: 0 auto;
  padding: 8px 0;
}
body[data-page="about"] .timeline::before{
  content:"";
  position:absolute;
  left: 32px;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
  opacity:.9;
}
body[data-page="about"] .tl-item{
  position: relative;
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 16px;
  padding: 18px 0;
}
body[data-page="about"] .tl-dot{
  position: relative;
  width: 64px; height: 20px;
}
body[data-page="about"] .tl-dot::before{
  content:"";
  position:absolute;
  left: 24px; top: 2px;
  width: 16px; height: 16px;
  border-radius: 50%;
  border: 2px solid var(--muted);
  background: var(--bg);
}
body[data-page="about"] .tl-card{
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 12px;
  padding: 12px 14px;
  box-shadow: var(--shadow);
}
body[data-page="about"] .tl-head{
  display:flex; align-items:center; gap:8px;
  margin-bottom: 4px; flex-wrap: wrap;
}
body[data-page="about"] .tl-stage{ font-weight:700; font-size:.95rem; }
body[data-page="about"] .tl-tag{
  font-size: .72rem; line-height: 1;
  padding: 4px 6px; border-radius: 6px;
  border: 1px solid var(--border); color: var(--muted);
}
body[data-page="about"] .tl-text{ font-size:.95rem; line-height:1.7; }

@media (max-width: 560px){
  body[data-page="about"] .timeline::before{ left: 24px; }
  body[data-page="about"] .tl-item{ grid-template-columns: 56px 1fr; }
  body[data-page="about"] .tl-dot{ width: 56px; }
}

/* 所属（このページ専用の体裁） */
body[data-page="about"] .affiliation {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 1.05rem;
  background: transparent;
}
body[data-page="about"] .affiliation__inner a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
body[data-page="about"] .affiliation__inner a:hover { text-decoration: underline; }
body[data-page="about"] #affiliation { margin-top: 2rem; margin-bottom: 2rem; }