/*
  about.css — Aboutページ専用スタイル
  読み込み: pages/about.html
*/

/* ── Story ── */
.story-section { padding: 80px 0 120px; }
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: start; }
.story-sticky { position: sticky; top: 96px; }
.story-headline {
  font-family: var(--font-head);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 600;
  color: var(--white);
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.story-headline em { font-style: italic; color: var(--a); }
.story-divider { width: 40px; height: 1px; background: var(--a); margin: 32px 0; }
.story-body { font-size: 0.9375rem; color: var(--gray-2); line-height: 1.9; }
.story-body p + p { margin-top: 18px; }

/* MVV */
.mvv-stack { display: flex; flex-direction: column; gap: 1px; background: var(--border); }
.mvv-item {
  background: var(--bg-2);
  padding: 36px 40px;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}
.mvv-item:hover { background: var(--bg-3); }
.mvv-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
}
.mvv-item:nth-child(1)::before { background: var(--a); }
.mvv-item:nth-child(2)::before { background: var(--gray-3); }
.mvv-item:nth-child(3)::before { background: var(--habiru); }

.mvv-label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--gray-3);
  font-weight: 600;
  margin-bottom: 12px;
}
.mvv-text {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.35;
}
.mvv-sub { font-size: 0.875rem; color: var(--gray-2); margin-top: 10px; line-height: 1.7; }

/* ── Values ── */
.values-section { padding: 120px 0; background: var(--bg-1); border-top: 1px solid var(--border); }
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--border); margin-top: 64px; }
.value-card { background: var(--bg-1); padding: 40px 36px; transition: background 0.3s; }
.value-card:hover { background: var(--bg-2); }
.value-num {
  font-family: var(--font-head);
  font-size: 3rem;
  font-weight: 600;
  color: var(--border-h);
  line-height: 1;
  margin-bottom: 20px;
}
.value-card h3 {
  font-family: var(--font-head);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}
.value-card p { font-size: 0.875rem; color: var(--gray-2); line-height: 1.8; }

/* ── Team ── */
.team-section { padding: 120px 0; border-top: 1px solid var(--border); }
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); margin-top: 64px; }
.team-card { background: var(--bg); padding: 36px 28px; text-align: center; transition: background 0.3s; }
.team-card:hover { background: var(--bg-2); }
.team-avatar {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--bg-2);
  border: 1px solid var(--border-h);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 18px;
}
.team-name { font-family: var(--font-head); font-size: 1.1rem; font-weight: 600; color: var(--white); margin-bottom: 4px; }
.team-role { font-size: 0.7rem; font-weight: 600; color: var(--a); margin-bottom: 12px; text-transform: uppercase; letter-spacing: 0.1em; }
.team-bio { font-size: 0.8125rem; color: var(--gray-3); line-height: 1.65; }

/* ── History ── */
.history-section { padding: 120px 0; background: var(--bg-1); border-top: 1px solid var(--border); }
.timeline { position: relative; margin-top: 64px; }
.timeline::before { content: ''; position: absolute; left: 80px; top: 0; bottom: 0; width: 1px; background: var(--border); }
.tl-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 48px;
  padding: 0 0 52px 0;
  position: relative;
}
.tl-item:last-child { padding-bottom: 0; }
.tl-dot {
  position: absolute;
  left: 74px; top: 6px;
  width: 13px; height: 13px;
  border-radius: 50%;
  background: var(--a);
  border: 2px solid var(--bg-1);
}
.tl-year {
  font-family: var(--font-head);
  font-size: 0.875rem; font-weight: 600;
  color: var(--a);
  padding-top: 4px;
  text-align: right;
}
.tl-title { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.tl-desc { font-size: 0.875rem; color: var(--gray-2); line-height: 1.75; }

/* ── Responsive ── */
@media (max-width: 900px) {
  .story-grid { grid-template-columns: 1fr; gap: 48px; }
  .story-sticky { position: static; }
  .values-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline::before { left: 60px; }
  .tl-item { grid-template-columns: 60px 1fr; gap: 32px; }
  .tl-dot { left: 54px; }
}

/* ── CTA ── */
.about-cta-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
}

@media (max-width: 900px) {
  .about-cta-inner {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}