/* S1 page — asymmetric editorial layouts, distinct per section. */

.s1-concept-section { padding: 84px 0; background: linear-gradient(180deg, rgba(255,255,255,.014), transparent); }
.s1-split {
  display: grid;
  grid-template-columns: minmax(140px, .3fr) minmax(0, 1fr);
  gap: 40px;
  align-items: start;
}
.s1-split-copy h2 {
  margin: 16px 0 20px;
  max-width: 760px;
  font-family: var(--editorial-display);
  font-size: clamp(2.2rem, 4vw, 3.6rem);
  line-height: 1.08;
  letter-spacing: -.045em;
}
.s1-split-copy p {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.7;
}

.s1-exterior-section { background: #08090c; }
.exterior-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
  margin-top: 44px;
}
.exterior-frame { margin: 0; }
.exterior-frame-a,
.exterior-frame-b,
.exterior-frame-c { grid-column: auto; }
.exterior-media {
  overflow: hidden;
  border-radius: 6px;
  aspect-ratio: 4 / 3;
}
.exterior-media img { width: 100%; height: 100%; object-fit: contain; padding: 18px; }
.exterior-frame figcaption {
  display: grid;
  gap: 10px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.exterior-frame figcaption span {
  flex: 0 0 auto;
  font-family: var(--editorial-display);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.exterior-frame figcaption p { margin: 0; color: var(--muted); font-size: .92rem; line-height: 1.55; }

.s1-details-section { background: linear-gradient(180deg, transparent, rgba(255,255,255,.014)); }
.detail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin-top: 44px;
  border: 1px solid var(--line);
  background: var(--line);
}
.detail-frame { margin: 0; background: var(--bg); }
.detail-media { aspect-ratio: 1 / 1; border-radius: 0; border: 0; background: rgba(255,255,255,.02); }
.detail-media img { width: 100%; height: 100%; object-fit: contain; padding: 20px; }
.detail-frame figcaption {
  padding: 12px 16px 18px;
  color: var(--muted-2);
  font-family: var(--editorial-display);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.s1-development-section { background: #08090c; }
.s1-development-grid {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr);
  gap: 48px;
  align-items: center;
}
.s1-development-copy h2 {
  margin: 16px 0 20px;
  font-family: var(--editorial-display);
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -.04em;
}
.s1-development-copy p { margin: 0; color: var(--muted); font-size: 1.02rem; line-height: 1.68; }
.s1-development-media {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.s1-development-media .detail-media { aspect-ratio: 3 / 4; }

.s1-viewer-section { background: linear-gradient(180deg, rgba(255,255,255,.012), transparent); }
.s1-viewer-panel .drivelab-canvas { height: 82vh; min-height: 560px; max-height: 920px; }

@media (max-width: 1100px) {
  .s1-split { grid-template-columns: 1fr; gap: 20px; }
  .exterior-gallery { grid-template-columns: 1fr; }
  .s1-development-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .detail-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .s1-development-media { grid-template-columns: 1fr; }
  .s1-viewer-panel .drivelab-canvas { height: 62vh; min-height: 420px; }
}

@media (max-width: 580px) {
  .s1-viewer-panel .drivelab-hud-top { top: 12px; left: 12px; }
  .s1-viewer-panel .drivelab-hint {
    top: 72px;
    right: 12px;
    left: 12px;
    max-width: none;
    padding: 8px 12px;
    transform: none;
    text-align: center;
    line-height: 1.45;
  }
  .s1-viewer-panel .drivelab-reset { right: 12px; bottom: 12px; }
}