:root {
  --acs-navy: #062849;
  --acs-navy-deep: #031a31;
  --acs-blue: #0667b8;
  --acs-cyan: #00a7cf;
  --acs-ink: #071b33;
  --acs-muted: #566b82;
  --acs-line: #d8e3ed;
  --acs-soft: #f3f8fc;
  --acs-white: #ffffff;
}

html { scroll-behavior: smooth; scroll-padding-top: 76px; }
.abb-series-engineering-page { margin: 0; color: var(--acs-ink); background: var(--acs-white); font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", "PingFang SC", Arial, sans-serif; overflow-x: clip; }
.abb-series-engineering-page *, .abb-series-engineering-page *::before, .abb-series-engineering-page *::after { box-sizing: border-box; }
.abb-series-engineering-page img { max-width: 100%; }
.abb-series-engineering-page a { text-decoration: none; }
.acs-shell { width: var(--zq-shell-width, min(calc(100% - 48px), max(1180px, 74vw))); margin-inline: auto; }

.acs-site-header .shop-header-inner { width: var(--zq-shell-width, min(calc(100% - 48px), max(1180px, 74vw))); height: 84px; grid-template-columns: 290px 1fr 112px; }
.acs-brand > img { width: 48px; height: 48px; object-fit: contain; }
.acs-site-header .shop-brand-copy strong { color: var(--acs-navy); font-size: 16px; }
.acs-site-header .shop-brand-copy small { margin-top: 6px; color: var(--acs-blue); font-size: 11px; }
.acs-site-header .shop-navigation a { padding-inline: 18px; font-size: 13px; }
.acs-language { position: relative; }
.acs-language summary { min-width: 92px; padding: 11px 16px; border: 1px solid #8aa0b7; color: var(--acs-ink); background: #fff; font-size: 13px; font-weight: 700; text-align: center; cursor: pointer; list-style: none; }
.acs-language summary::-webkit-details-marker { display: none; }
.acs-language[open] a { position: absolute; top: calc(100% + 5px); right: 0; width: 112px; padding: 11px 14px; border: 1px solid var(--acs-line); background: #fff; color: var(--acs-ink); font-size: 12px; text-align: center; }

.acs-hero { background: #f4f9fd; border-bottom: 1px solid var(--acs-line); }
.acs-breadcrumbs { display: flex; align-items: center; gap: 9px; min-height: 56px; color: #75869a; font-size: 12px; }
.acs-breadcrumbs a { color: #526c85; }
.acs-hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(420px, .95fr); gap: clamp(42px, 7vw, 100px); align-items: center; min-height: 630px; padding: 36px 0 68px; }
.acs-product-visual { display: grid; place-items: center; min-width: 0; margin: 0; }
.acs-product-visual img { width: min(100%, clamp(610px, 32vw, 760px)); max-height: clamp(540px, 34vw, 760px); object-fit: contain; mix-blend-mode: multiply; }
.acs-hero-copy { padding-top: 8px; }
.acs-eyebrow { margin: 0 0 14px; color: var(--acs-blue); font-size: 12px; font-weight: 800; letter-spacing: .13em; }
.acs-hero-copy::before { display: block; width: 34px; height: 3px; margin-bottom: 22px; background: var(--acs-cyan); content: ""; }
.acs-hero-copy h1, .acs-section-heading h2, .acs-integration-grid h2, .acs-quote-card h2 { margin: 0; color: var(--acs-ink); font-weight: 800; letter-spacing: -.035em; }
.acs-hero-copy h1 { font-size: clamp(36px, 4.4vw, 58px); line-height: 1.08; }
.acs-lead { margin: 18px 0 12px; color: var(--acs-ink); font-size: 18px; font-weight: 700; line-height: 1.65; }
.acs-hero-copy > p:not(.acs-eyebrow, .acs-lead) { margin: 0; color: var(--acs-muted); font-size: 15px; line-height: 1.9; }
.acs-hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0 26px; }
.acs-button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 0 25px; border: 1px solid var(--acs-blue); font-size: 13px; font-weight: 800; transition: color .2s ease, background-color .2s ease, border-color .2s ease; }
.acs-button:focus-visible, .acs-section-nav a:focus-visible, .acs-recommendation-grid a:focus-visible, .acs-mv-card:focus-visible { outline: 3px solid rgba(0, 167, 207, .35); outline-offset: 3px; }
.abb-series-engineering-page .acs-button-primary { color: #fff; background: var(--acs-blue); }
.abb-series-engineering-page .acs-button-primary:hover { border-color: var(--acs-navy); color: #fff; background: var(--acs-navy); }
.abb-series-engineering-page .acs-button-secondary { color: var(--acs-blue); background: transparent; }
.abb-series-engineering-page .acs-button-secondary:hover { color: #fff; background: var(--acs-blue); }
.acs-hero-facts { display: grid; gap: 10px; margin: 0; }
.acs-hero-facts > div { display: grid; grid-template-columns: 128px minmax(0, 1fr); gap: 18px; padding-bottom: 9px; border-bottom: 1px solid #dfe8f0; }
.acs-hero-facts dt, .acs-hero-facts dd { margin: 0; font-size: 13px; line-height: 1.5; }
.acs-hero-facts dt { color: #27445f; font-weight: 800; }
.acs-hero-facts dd { color: var(--acs-muted); }

.acs-fact-rail { color: #fff; background: var(--acs-navy); }
.acs-fact-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.acs-fact-grid > div { min-height: 122px; padding: 30px 30px 25px; border-right: 1px solid rgba(255, 255, 255, .16); }
.acs-fact-grid > div:first-child { border-left: 1px solid rgba(255, 255, 255, .16); }
.acs-fact-grid strong, .acs-fact-grid span { display: block; }
.acs-fact-grid strong { color: #fff; font-size: 17px; line-height: 1.35; }
.acs-fact-grid span { margin-top: 9px; color: rgba(255, 255, 255, .68); font-size: 12px; }

.acs-section-nav { position: sticky; z-index: 12; top: 0; border-bottom: 1px solid var(--acs-line); background: rgba(255, 255, 255, .97); }
.acs-section-nav .acs-shell { display: flex; overflow-x: auto; scrollbar-width: thin; }
.acs-section-nav a { position: relative; flex: 0 0 auto; padding: 19px 23px; color: #2a4057; font-size: 12px; font-weight: 800; white-space: nowrap; }
.acs-section-nav a:hover, .acs-section-nav a.active { color: var(--acs-blue); }
.acs-section-nav a.active::after { position: absolute; right: 23px; bottom: 0; left: 23px; height: 3px; background: var(--acs-cyan); content: ""; }

.acs-section { padding: 78px 0; scroll-margin-top: 58px; }
.acs-section-tint { background: var(--acs-soft); }
.acs-section-heading { max-width: 730px; margin-bottom: 36px; }
.acs-section-heading h2, .acs-integration-grid h2 { font-size: clamp(28px, 3.2vw, 42px); line-height: 1.18; }
.acs-section-heading > p:last-child { margin: 16px 0 0; color: var(--acs-muted); font-size: 14px; line-height: 1.8; }
.acs-heading-row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .75fr); gap: 58px; max-width: none; align-items: end; }
.acs-heading-row > p:last-child { margin: 0 0 5px; }

.acs-platform-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.acs-platform-card { position: relative; min-width: 0; padding: 30px; border: 1px solid var(--acs-line); background: #f3f8fc; }
.acs-card-index { position: absolute; top: 28px; right: 28px; color: #86a0b7; font-size: 12px; font-weight: 800; }
.acs-card-type { margin: 0 0 9px; color: var(--acs-blue); font-size: 12px; font-weight: 800; letter-spacing: .08em; }
.acs-platform-card h3, .acs-mv-card h3 { margin: 0; color: var(--acs-ink); font-size: 24px; }
.acs-platform-card > p:not(.acs-card-type), .acs-mv-card p:not(.acs-card-type) { margin: 13px 0 24px; color: var(--acs-muted); font-size: 13px; line-height: 1.75; }
.acs-platform-card dl, .acs-mv-card dl { margin: 0; }
.acs-platform-card dl > div { display: grid; grid-template-columns: 90px minmax(0, 1fr); gap: 16px; padding: 12px 0; border-top: 1px solid var(--acs-line); }
.acs-platform-card dt, .acs-platform-card dd, .acs-mv-card dt, .acs-mv-card dd { margin: 0; font-size: 12px; line-height: 1.5; }
.acs-platform-card dt, .acs-mv-card dt { color: #344d65; font-weight: 800; }
.acs-platform-card dd, .acs-mv-card dd { color: var(--acs-muted); }
.acs-mv-card { display: grid; grid-template-columns: minmax(260px, 1.25fr) minmax(340px, .9fr) auto; gap: 36px; align-items: center; margin-top: 22px; padding: 28px 30px; border: 1px solid var(--acs-line); color: inherit; background: #f8fbfe; }
.acs-mv-card p:not(.acs-card-type) { margin-bottom: 0; }
.acs-mv-card dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.acs-mv-card dl > div { padding-left: 18px; border-left: 2px solid #b8d5e8; }
.acs-mv-card dd { margin-top: 6px; }
.acs-text-link { color: var(--acs-blue); font-size: 13px; font-weight: 800; }
.acs-text-link:hover { color: var(--acs-navy); }

.acs-selection-flow { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--acs-line); border-bottom: 1px solid var(--acs-line); }
.acs-selection-flow li { min-width: 0; padding: 28px 24px 30px; border-right: 1px solid var(--acs-line); }
.acs-selection-flow li:first-child { border-left: 1px solid var(--acs-line); }
.acs-selection-flow span, .acs-rfq-grid span, .acs-capability-list span { color: var(--acs-cyan); font-size: 13px; font-weight: 800; }
.acs-selection-flow h3, .acs-rfq-grid h3 { margin: 16px 0 10px; color: var(--acs-ink); font-size: 16px; }
.acs-selection-flow p, .acs-rfq-grid p { margin: 0; color: var(--acs-muted); font-size: 12px; line-height: 1.75; }

.acs-overview-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: clamp(50px, 8vw, 110px); }
.acs-overview-grid article > p { margin: 0; color: var(--acs-muted); font-size: 14px; line-height: 1.95; }
.acs-check-list, .acs-integration-grid ul { margin: 26px 0 0; padding: 0; list-style: none; }
.acs-check-list li, .acs-integration-grid li { position: relative; padding: 13px 0 13px 22px; border-top: 1px solid var(--acs-line); color: #344e67; font-size: 13px; line-height: 1.6; }
.acs-check-list li::before, .acs-integration-grid li::before { position: absolute; top: 20px; left: 2px; width: 6px; height: 6px; border-radius: 50%; background: var(--acs-cyan); content: ""; }
.acs-capability-list > div { display: grid; grid-template-columns: 38px 150px minmax(0, 1fr); gap: 14px; align-items: baseline; padding: 17px 0; border-top: 1px solid var(--acs-line); }
.acs-capability-list h3, .acs-capability-list p { margin: 0; }
.acs-capability-list h3 { color: var(--acs-ink); font-size: 14px; }
.acs-capability-list p { color: var(--acs-muted); font-size: 12px; line-height: 1.7; }

.acs-table-wrap { width: 100%; overflow-x: auto; border: 1px solid var(--acs-line); background: #fff; }
.acs-data-block + .acs-data-block { margin-top: 38px; }
.acs-data-heading { margin-bottom: 16px; }
.acs-data-heading h3 { margin: 0; color: var(--acs-ink); font-size: clamp(20px, 2.2vw, 28px); line-height: 1.3; }
.acs-data-heading > p:last-child { margin: 10px 0 0; color: var(--acs-muted); font-size: 13px; line-height: 1.7; }
.acs-spec-table { width: 100%; min-width: 970px; border-collapse: collapse; table-layout: fixed; }
.acs-spec-table th, .acs-spec-table td { padding: 17px 15px; border-right: 1px solid var(--acs-line); border-bottom: 1px solid var(--acs-line); color: var(--acs-muted); font-size: 12px; line-height: 1.55; text-align: left; vertical-align: top; }
.acs-spec-table th { color: #2c465e; font-weight: 800; }
.acs-spec-table thead th { background: #eaf3f9; }
.acs-spec-table tr:last-child > * { border-bottom: 0; }
.acs-spec-table tr > *:last-child { border-right: 0; }

.acs-integration-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 42px; }
.acs-integration-grid article { min-width: 0; }
.acs-integration-grid h2 { min-height: 88px; font-size: 25px; line-height: 1.35; }

.acs-application-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.acs-application-grid article { min-width: 0; border: 1px solid var(--acs-line); background: #fff; }
.acs-application-grid img { display: block; width: 100%; height: auto; aspect-ratio: 16 / 9; object-fit: cover; }
.acs-application-grid article > div { padding: 18px 18px 20px; }
.acs-application-grid h3 { margin: 0 0 7px; color: var(--acs-ink); font-size: 16px; }
.acs-application-grid p { margin: 0; color: var(--acs-muted); font-size: 12px; line-height: 1.65; }

.acs-rfq-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 0; margin: 0; padding: 0; list-style: none; border: 1px solid var(--acs-line); }
.acs-rfq-grid li { min-width: 0; padding: 24px 20px; border-right: 1px solid var(--acs-line); }
.acs-rfq-grid li:last-child { border-right: 0; }

.acs-recommendation-section { border-top: 1px solid var(--acs-line); background: #f7fafc; }
.acs-recommendation-layout { display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(330px, .8fr); gap: 44px; align-items: start; }
.acs-recommendation-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.acs-recommendation-grid a { display: flex; min-width: 0; min-height: 0; padding: 18px; border: 1px solid var(--acs-line); color: inherit; background: #fff; flex-direction: column; }
.acs-recommendation-grid a:hover { border-color: var(--acs-blue); }
.acs-recommendation-grid img { display: block; width: 100%; height: clamp(180px, 12vw, 260px); margin-bottom: 14px; object-fit: contain; mix-blend-mode: multiply; }
.acs-recommendation-grid strong { color: var(--acs-ink); font-size: 14px; }
.acs-recommendation-grid span { display: -webkit-box; margin-top: 10px; overflow: hidden; color: var(--acs-muted); font-size: 11px; line-height: 1.5; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.acs-quote-card { display: flex; flex-direction: column; justify-content: center; min-height: 280px; padding: 38px; color: #fff; background: var(--acs-navy); }
.acs-quote-card .acs-eyebrow { color: #65d9f2; }
.acs-quote-card h2 { color: #fff; font-size: 30px; line-height: 1.2; }
.acs-quote-card p:not(.acs-eyebrow) { margin: 16px 0 24px; color: rgba(255, 255, 255, .72); font-size: 13px; line-height: 1.8; }
.acs-quote-card .acs-button-light { align-self: flex-start; border-color: #fff; color: var(--acs-navy); background: #fff; }
.acs-quote-card .acs-button-light:hover { border-color: #bfeef8; color: var(--acs-navy); background: #bfeef8; }
.acs-footer { background: var(--acs-navy-deep); }
.acs-footer .shop-footer-grid, .acs-footer .shop-footer-bottom { width: var(--zq-shell-width, min(calc(100% - 48px), max(1180px, 74vw))); }

@media (max-width: 1100px) {
  .acs-site-header .shop-header-inner { grid-template-columns: 240px 1fr 96px; }
  .acs-site-header .shop-navigation a { padding-inline: 10px; font-size: 12px; }
  .acs-hero-grid { grid-template-columns: minmax(0, 1fr) minmax(380px, .9fr); gap: 44px; }
  .acs-fact-grid > div { padding-inline: 20px; }
  .acs-section-nav a { padding-inline: 17px; }
  .acs-rfq-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .acs-rfq-grid li:nth-child(3) { border-right: 0; }
  .acs-rfq-grid li:nth-child(-n+3) { border-bottom: 1px solid var(--acs-line); }
  .acs-recommendation-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .acs-recommendation-grid img { height: 210px; }
}

@media (max-width: 900px) {
  .acs-shell, .acs-site-header .shop-header-inner, .acs-footer .shop-footer-grid, .acs-footer .shop-footer-bottom { width: min(calc(100% - 32px), 760px); }
  .acs-site-header .shop-header-inner { height: 70px; grid-template-columns: 1fr auto; }
  .acs-site-header .shop-brand-copy strong { font-size: 14px; }
  .acs-site-header .shop-menu-toggle { display: inline-grid; }
  .acs-site-header .shop-header-tools { display: none; }
  .acs-site-header .shop-navigation { top: 70px; }
  .acs-hero-grid { grid-template-columns: 1fr; gap: 20px; min-height: 0; padding: 20px 0 54px; }
  .acs-product-visual img { width: min(100%, 520px); max-height: 430px; }
  .acs-hero-copy { max-width: 680px; }
  .acs-fact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .acs-fact-grid > div, .acs-fact-grid > div:first-child { min-height: 104px; border-left: 0; border-right: 1px solid rgba(255, 255, 255, .16); border-bottom: 1px solid rgba(255, 255, 255, .16); }
  .acs-fact-grid > div:nth-child(2n) { border-right: 0; }
  .acs-platform-grid, .acs-overview-grid, .acs-integration-grid, .acs-recommendation-layout { grid-template-columns: 1fr; }
  .acs-mv-card { grid-template-columns: 1fr; gap: 22px; }
  .acs-mv-card dl { max-width: 460px; }
  .acs-selection-flow { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .acs-selection-flow li:nth-child(2n) { border-right: 0; }
  .acs-selection-flow li { border-bottom: 1px solid var(--acs-line); }
  .acs-selection-flow li:last-child { grid-column: 1 / -1; border-bottom: 0; }
  .acs-heading-row { grid-template-columns: 1fr; gap: 14px; }
  .acs-heading-row > p:last-child { max-width: 680px; }
  .acs-integration-grid h2 { min-height: 0; }
  .acs-application-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  html { scroll-padding-top: 58px; }
  .acs-shell, .acs-site-header .shop-header-inner, .acs-footer .shop-footer-grid, .acs-footer .shop-footer-bottom { width: calc(100% - 24px); }
  .acs-brand > img { width: 40px; height: 40px; }
  .acs-site-header .shop-brand-copy strong { font-size: 12px; }
  .acs-site-header .shop-brand-copy small { font-size: 9px; }
  .acs-breadcrumbs { min-height: 48px; overflow-x: auto; white-space: nowrap; }
  .acs-hero-grid { padding-bottom: 42px; }
  .acs-product-visual img { max-height: 340px; }
  .acs-hero-copy h1 { font-size: 34px; }
  .acs-lead { font-size: 16px; }
  .acs-hero-facts > div { grid-template-columns: 1fr; gap: 3px; }
  .acs-hero-actions .acs-button { flex: 1 1 150px; }
  .acs-fact-grid { grid-template-columns: 1fr; }
  .acs-fact-grid > div, .acs-fact-grid > div:first-child { min-height: 0; padding: 20px 4px; border-right: 0; }
  .acs-fact-grid > div:last-child { border-bottom: 0; }
  .acs-section-nav .acs-shell { width: 100%; padding-inline: 4px; }
  .acs-section-nav a { padding: 16px 13px; }
  .acs-section-nav a.active::after { right: 13px; left: 13px; }
  .acs-section { padding: 56px 0; }
  .acs-section-heading { margin-bottom: 28px; }
  .acs-section-heading h2, .acs-integration-grid h2 { font-size: 28px; }
  .acs-platform-card, .acs-mv-card { padding: 24px; }
  .acs-mv-card dl { grid-template-columns: 1fr; }
  .acs-selection-flow { grid-template-columns: 1fr; }
  .acs-selection-flow li, .acs-selection-flow li:first-child { border-right: 0; border-left: 0; }
  .acs-selection-flow li:last-child { grid-column: auto; }
  .acs-capability-list > div { grid-template-columns: 32px minmax(0, 1fr); }
  .acs-capability-list p { grid-column: 2; }
  .acs-table-wrap { overflow: visible; border: 0; background: transparent; }
  .acs-spec-table, .acs-spec-table tbody, .acs-spec-table tr, .acs-spec-table th, .acs-spec-table td { display: block; width: 100%; min-width: 0; }
  .acs-spec-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .acs-spec-table tr { margin-bottom: 16px; border: 1px solid var(--acs-line); background: #fff; }
  .acs-spec-table th, .acs-spec-table td { display: grid; grid-template-columns: 100px minmax(0, 1fr); gap: 14px; padding: 12px 15px; border-right: 0; border-bottom: 1px solid var(--acs-line); }
  .acs-spec-table th::before, .acs-spec-table td::before { color: #2c465e; font-weight: 800; content: attr(data-label); }
  .acs-application-grid, .acs-rfq-grid, .acs-recommendation-grid { grid-template-columns: 1fr; }
  .acs-recommendation-grid img { height: 220px; }
  .acs-rfq-grid li, .acs-rfq-grid li:nth-child(3), .acs-rfq-grid li:last-child { border-right: 0; border-bottom: 1px solid var(--acs-line); }
  .acs-rfq-grid li:last-child { border-bottom: 0; }
  .acs-quote-card { min-height: 0; padding: 30px 24px; }
  .acs-footer .shop-footer-bottom { align-items: flex-start; flex-direction: column; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .acs-button { transition: none; } }