.steel-solution {
  --steel-ink: #253442;
  --steel-muted: #5e6b77;
  --steel-blue: #155db1;
  --steel-line: #dce2e7;
  --steel-surface: #f5f7f9;
  --steel-nav-height: 64px;
  --site-section-space: clamp(52px, 5.2vw, 72px);
  color: var(--steel-ink);
  background: #fff;
}
.steel-solution p { text-wrap: pretty; }
.steel-solution :is(a, video):focus-visible { outline: 2px solid var(--steel-blue); outline-offset: 5px; }
.steel-solution :is(section, aside)[id] { scroll-margin-top: var(--steel-nav-height); }
.steel-hero { background: var(--steel-surface); border-bottom: 1px solid var(--steel-line); }
.steel-hero-grid { display: grid; grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr); align-items: center; gap: 48px; padding-block: 60px; }
.steel-hero-copy { min-width: 0; }
#main-content.steel-solution .steel-hero h1 { color: #21374b; font-size: clamp(32px, 3.2vw, 44px); font-weight: 600; line-height: 1.4; }
.steel-hero-copy > p { max-width: 30em; margin-top: 20px; color: var(--steel-muted); font-size: 17px; line-height: 1.9; }
.steel-hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; margin-top: 28px; }
.steel-hero-actions .button { display: inline-flex; align-items: center; gap: 16px; }
.steel-hero-video { min-width: 0; margin: 0; }
.steel-hero-video video { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; background: #102a42; object-fit: contain; }
.steel-hero-video figcaption, .steel-case-image figcaption { margin-top: 12px; color: #71808c; font-size: 13px; line-height: 1.7; }
.steel-text-link { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; color: var(--steel-blue); font-size: 15px; }
.steel-text-link:hover { text-decoration: underline; text-underline-offset: 5px; }
.steel-section-nav { position: sticky; top: var(--header-height); z-index: 30; background: #fff; border-bottom: 1px solid var(--steel-line); }
.steel-section-nav > .shell { display: flex; align-items: stretch; gap: 40px; overflow-x: auto; scrollbar-width: thin; }
.steel-section-nav a { display: inline-flex; align-items: center; flex: 0 0 auto; min-height: var(--steel-nav-height); padding: 0 2px; border-bottom: 2px solid transparent; color: #53616e; font-size: 16px; white-space: nowrap; }
.steel-section-nav a:hover { color: var(--steel-blue); }
.steel-section-nav a[aria-current="location"] { border-bottom-color: var(--steel-blue); color: var(--steel-blue); font-weight: 500; }
.steel-section-heading { margin-bottom: 28px; }
#main-content.steel-solution .steel-section-heading h2 { max-width: 28em; color: var(--steel-ink); font-size: clamp(27px, 2.5vw, 34px); font-weight: 500; line-height: 1.5; }
.steel-needs-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; }
.steel-needs-grid article { min-width: 0; }
.steel-needs-grid article + article { padding-left: 28px; border-left: 1px solid var(--steel-line); }
.steel-needs-grid h3 { font-size: 20px; }
.steel-needs-grid article > p { margin-top: 14px; color: var(--steel-muted); font-size: 16px; line-height: 1.85; }
.steel-scheme { background: var(--steel-surface); }
.steel-scheme-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 30px; }
.steel-system-map { display: grid; gap: 20px; min-width: 0; margin: 0; padding: 28px; background: #fff; border: 1px solid var(--steel-line); }
.steel-map-row { display: grid; grid-template-columns: 96px minmax(0, 1fr); align-items: center; gap: 24px; }
.steel-map-label { color: #687987; font-size: 14px; font-weight: 500; }
.steel-map-resources { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); padding-block: 18px; border-block: 1px solid #e2e7eb; }
.steel-map-resource { min-width: 0; padding-inline: 22px; }
.steel-map-resource + .steel-map-resource { border-left: 1px solid #e2e7eb; }
.steel-map-resource h3 { color: #344d62; font-size: 16px; }
.steel-map-resource p { margin-top: 8px; color: #5c6e7d; font-size: 14px; line-height: 1.8; }
.steel-map-platform { padding: 19px 16px; color: #fff; background: #213e58; text-align: center; }
.steel-map-platform strong { font-size: 18px; font-weight: 500; line-height: 1.6; }
.steel-map-platform strong > span { margin-right: 5px; font-family: Arial, sans-serif; font-weight: 600; }
.steel-map-platform p { margin-top: 6px; color: #d4e0ea; font-size: 14px; line-height: 1.7; }
.steel-map-apps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 0; padding: 14px 0; border-block: 1px solid #e2e7eb; list-style: none; }
.steel-map-apps li { display: flex; align-items: center; justify-content: center; min-height: 32px; padding-inline: 12px; color: #34536d; font-size: 15px; line-height: 1.7; text-align: center; }
.steel-map-apps li + li { border-left: 1px solid #e2e7eb; }
.steel-implementation { padding-top: 26px; border-top: 1px solid #d4dde4; }
.steel-implementation > h3 { margin-bottom: 22px; font-size: 19px; }
.steel-implementation ol { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 26px; margin: 0; padding: 0; list-style: none; counter-reset: steel-step; }
.steel-implementation li { display: flex; align-items: baseline; gap: 14px; counter-increment: steel-step; }
.steel-implementation li::before { flex: 0 0 24px; content: '0' counter(steel-step); color: #6a8195; font-family: Arial, sans-serif; font-size: 18px; font-variant-numeric: tabular-nums; }
.steel-implementation h4 { margin: 0; color: #354b5e; font-size: 16px; }
.steel-implementation li p { margin-top: 7px; color: var(--steel-muted); font-size: 14px; line-height: 1.85; }
.steel-boundary { margin-top: 22px; color: #687782; font-size: 14px; line-height: 1.85; }

.steel-capabilities-grid { border-top: 1px solid var(--steel-line); }
.steel-capabilities-grid article { display: grid; grid-template-columns: 244px minmax(0, 1fr); align-items: baseline; gap: 48px; min-width: 0; padding: 25px 0; border-bottom: 1px solid var(--steel-line); }
.steel-capabilities-grid h3 { color: #2b4053; font-size: 20px; }
.steel-capabilities-grid article > p { max-width: 46em; margin: 0; color: var(--steel-muted); font-size: 16px; line-height: 1.85; }
.steel-case { background: var(--steel-surface); }
.steel-case-grid { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.4fr); align-items: center; gap: 56px; }
.steel-case-copy { min-width: 0; }
.steel-case-copy .steel-section-heading { margin-bottom: 20px; }
.steel-case-copy > p { color: var(--steel-muted); font-size: 16px; line-height: 1.85; }
.steel-case-copy > .steel-text-link { margin-top: 22px; }
.steel-case-image { min-width: 0; margin: 0; }
.steel-case-image img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; background: #dce6ee; object-fit: cover; object-position: center; }

@media (max-width: 1100px) {
  .steel-hero-grid { gap: 32px; }
  .steel-scheme-grid { gap: 26px; }
  .steel-system-map { padding: 22px; }
  .steel-case-grid { gap: 36px; }
}
@media (max-width: 900px) {
  .steel-hero-grid { grid-template-columns: 1fr; gap: 30px; padding-block: 48px; }
  .steel-hero-copy > p { max-width: 38em; }
  .steel-hero-video { max-width: 620px; }
  .steel-needs-grid { gap: 24px; }
  .steel-case-grid { grid-template-columns: 1fr; gap: 30px; }
  .steel-implementation ol { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 32px; }
  .steel-capabilities-grid article { grid-template-columns: 210px minmax(0, 1fr); gap: 28px; padding: 22px 0; }
  .steel-case-image { max-width: 800px; }
}
@media (max-width: 600px) {
  .steel-solution { --site-section-space: 46px; --steel-nav-height: 58px; }
  .steel-hero-grid { padding-block: 36px; gap: 26px; }
  #main-content.steel-solution .steel-hero h1 { font-size: clamp(29px, 8vw, 36px); }
  .steel-hero-copy > p { margin-top: 16px; font-size: 16px; }
  .steel-hero-actions { gap: 8px 22px; margin-top: 22px; }
  .steel-section-nav > .shell { gap: 24px; }
  .steel-section-nav a { font-size: 15px; }
  .steel-section-heading { margin-bottom: 24px; }
  #main-content.steel-solution .steel-section-heading h2 { font-size: 26px; }
  .steel-needs-grid { grid-template-columns: 1fr; gap: 20px; }
  .steel-needs-grid article + article { padding: 20px 0 0; border: 0; border-top: 1px solid var(--steel-line); }
  .steel-needs-grid h3, .steel-capabilities-grid h3 { font-size: 20px; }
  .steel-needs-grid article > p { margin-top: 10px; }
  .steel-system-map { padding: 20px 16px; }
  .steel-map-row { grid-template-columns: 1fr; gap: 10px; }
  .steel-map-resources { grid-template-columns: 1fr; padding-block: 0; }
  .steel-map-resource { display: grid; grid-template-columns: 78px minmax(0, 1fr); align-items: baseline; gap: 12px; padding: 14px 0; }
  .steel-map-resource + .steel-map-resource { border: 0; border-top: 1px solid #e2e7eb; }
  .steel-map-resource p { margin: 0; }
  .steel-map-platform { padding-inline: 12px; }
  .steel-map-platform strong { font-size: 17px; }
  .steel-map-apps { padding-block: 12px; }
  .steel-map-apps li { padding-inline: 6px; font-size: 14px; }
  .steel-implementation ol { grid-template-columns: 1fr; gap: 20px; }
  .steel-boundary { margin-top: 18px; }
  .steel-capabilities-grid article { grid-template-columns: 1fr; gap: 10px; padding: 20px 0; }
}
@media (prefers-reduced-motion: reduce) {
  html:has(.steel-solution) { scroll-behavior: auto; }
}