.jk-metallurgy { padding: 80px 0; background: #f4f8fb; scroll-margin-top: 140px; }
.jk-metallurgy-heading { max-width: 900px; margin-bottom: 32px; }
main .jk-metallurgy h2 { margin: 0 0 18px; font-size: 36px; line-height: 1.2; letter-spacing: 0 !important; }
.jk-metallurgy p { max-width: 72ch; color: var(--muted); font-size: 16px; line-height: 1.65; }
.jk-metallurgy-photos { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.jk-metallurgy figure { min-width: 0; margin: 0; }
.jk-metallurgy-photos figure > a { display: block; background: #fff; }
.jk-metallurgy-photos img { display: block; width: 100%; height: 440px; object-fit: contain; }
.jk-metallurgy figcaption { display: grid; gap: 8px; padding-top: 16px; color: var(--muted); font-size: 14px; line-height: 1.6; }
.jk-metallurgy figcaption strong { color: var(--ink); font-size: 18px; font-weight: 600; }
.jk-metallurgy-details { margin-top: 28px; border-top: 1px solid #c5dce9; border-bottom: 1px solid #c5dce9; }
.jk-metallurgy-details summary { padding: 18px 0; cursor: pointer; color: var(--ink); font-weight: 600; }
.jk-metallurgy-details .jk-metallurgy-photos { padding: 8px 0 28px; }
.jk-metallurgy-video-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; gap: 44px; margin-top: 48px; }
main .jk-metallurgy h3 { margin: 0 0 16px; font-size: 24px; line-height: 1.3; letter-spacing: 0 !important; }
.jk-metallurgy a { color: var(--blue-dark); text-decoration: underline; text-underline-offset: 4px; }
.jk-metallurgy a:focus-visible, .jk-metallurgy summary:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }
.jk-metallurgy video { display: block; width: 100%; max-height: 500px; background: #111; }
@media (max-width: 720px) {
  .jk-metallurgy { padding: 56px 0; scroll-margin-top: 32px; }
  main .jk-metallurgy h2 { font-size: 28px; }
  .jk-metallurgy-photos, .jk-metallurgy-video-layout { grid-template-columns: 1fr; gap: 28px; }
  .jk-metallurgy-photos img { height: auto; max-height: 430px; object-fit: contain; }
  .jk-metallurgy-video-layout { margin-top: 32px; }
}