/* BK Energy 设计变量：后续全站复用本组颜色、间距和组件。 */
:root {
  color-scheme: light;
  --ink: #17191c;
  --muted: #62676c;
  --paper: #fff;
  --surface: #f3f4f4;
  --line: #dedfe0;
  --red: #b51232;
  --red-hover: #950d28;
  --dark: #181b1d;
  --font: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, monospace;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-6: 48px;
  --space-8: 64px;
  --space-12: 96px;
  --space-16: 128px;
  --gutter: clamp(20px, 4vw, 64px);
  --content: 1320px;
  --radius: 8px;
  --motion-fast: 180ms;
  --motion: 420ms;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 105px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 15px/1.6 var(--font); -webkit-font-smoothing: antialiased; }
body.dialog-open { overflow: hidden; }
[hidden] { display: none !important; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: default; opacity: .35; }
img { display: block; max-width: 100%; height: auto; }
svg { display: block; width: 20px; height: 20px; flex: 0 0 auto; }
button, a { -webkit-tap-highlight-color: transparent; }
::selection { background: #f3c6cf; color: var(--ink); }
:focus-visible { outline: 2px solid var(--red); outline-offset: 5px; }
.wrap { width: min(100% - var(--gutter) * 2, var(--content)); margin-inline: auto; }
.eyebrow { margin: 0 0 24px; font: 11px/1.4 var(--font-mono); letter-spacing: .11em; text-transform: uppercase; }
.eyebrow .section-number { display: inline-block; margin-right: 18px; color: var(--red); }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { text-wrap: balance; }
h2 { margin-bottom: 24px; font-size: clamp(32px, 4vw, 54px); font-weight: 500; line-height: 1.08; letter-spacing: -.045em; }
h3 { font-weight: 500; line-height: 1.25; letter-spacing: -.025em; }
p { color: var(--muted); }
.section { padding-block: var(--space-12); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 40px; }
.section-head h2 { margin-bottom: 0; }
.section-head > p { max-width: 330px; margin: 0; }
.text-link { display: inline-flex; align-items: center; gap: 24px; padding-block: 8px; font-size: 13px; font-weight: 600; }
.text-link svg { transition: transform var(--motion-fast); }
.text-link:hover svg { transform: translateX(4px); }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 25px; min-height: 48px; padding: 13px 20px; border: 1px solid var(--ink); border-radius: 3px; color: var(--ink); font-size: 13px; font-weight: 600; line-height: 1.4; transition: background var(--motion-fast), color var(--motion-fast), border-color var(--motion-fast); }
.button-primary { border-color: var(--red); background: var(--red); color: #fff; }
.button-primary:hover { background: var(--red-hover); border-color: var(--red-hover); }
.button-secondary:hover { background: var(--ink); color: #fff; }
.button svg { width: 17px; height: 17px; }
.round-button { display: inline-flex; justify-content: center; align-items: center; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%; background: transparent; color: var(--ink); transition: background var(--motion-fast), color var(--motion-fast); }
.round-button:not(:disabled):hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.skip-link { position: fixed; z-index: 100; left: 16px; top: -100px; padding: 12px 20px; color: #fff; background: var(--ink); }
.skip-link:focus { top: 16px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }

/* 品牌导航：触屏和键盘均可操作，手机菜单采用普通文档流。 */
.contact-strip { background: var(--surface); border-bottom: 1px solid var(--line); }
.contact-strip .wrap { display: flex; justify-content: space-between; align-items: center; gap: 20px; min-height: 34px; font-size: 10px; }
.strip-label { letter-spacing: .08em; }
.strip-links { display: flex; gap: 26px; color: var(--muted); }
.strip-links a:hover { color: var(--red); }
.site-header { position: sticky; z-index: 30; top: 0; background: #fffffff5; border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; min-height: 86px; }
.brand { display: inline-flex; align-items: center; gap: 13px; flex-shrink: 0; }
.brand img { width: 54px; height: 38px; object-fit: contain; }
.brand strong { display: block; font-size: 22px; line-height: 1.15; font-weight: 750; letter-spacing: -.045em; }
.brand small { display: block; margin-top: 5px; font-size: 10px; line-height: 1.3; letter-spacing: .015em; color: var(--muted); }
.site-nav { display: flex; align-items: center; gap: clamp(20px, 2.4vw, 36px); }
.site-nav > a { padding: 12px 0; font-size: 13px; }
.site-nav > a:not(.button) { position: relative; }
.site-nav > a:not(.button)::after { content: ""; position: absolute; right: 0; bottom: 5px; left: 0; height: 1px; background: var(--red); transform: scaleX(0); transform-origin: left; transition: transform var(--motion-fast); }
.site-nav > a:hover::after, .site-nav > a[aria-current]::after { transform: scaleX(1); }
.site-nav .button { padding: 11px 17px; min-height: 42px; font-size: 12px; gap: 20px; }
.menu-toggle { display: none; }

/* Hero：保留现有主标题，使用分栏和实物图建立视觉层次。 */
.hero { padding: 54px 0 48px; }
.hero-grid { display: grid; grid-template-columns: 1.13fr 1fr; gap: clamp(32px, 5vw, 76px); align-items: center; }
.hero-copy { padding-block: 26px; }
.hero-kicker { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.red-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--red); }
.hero h1 { margin: 0 0 26px; font-size: clamp(40px, 4.6vw, 66px); font-weight: 500; line-height: 1.045; letter-spacing: -.055em; }
.hero h1 span { color: var(--red); }
.hero-description { max-width: 460px; margin-bottom: 30px; font-size: 15px; line-height: 1.8; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-footnote { max-width: 400px; margin: 30px 0 0; font: 10px/1.6 var(--font-mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.hero-visual { position: relative; min-width: 0; padding-bottom: 36px; }
.hero-photograph { position: relative; isolation: isolate; overflow: hidden; height: clamp(460px, 43vw, 610px); border-radius: 3px; background: #41484b; }
.hero-photograph::after { position: absolute; content: ""; inset: 0; z-index: 2; pointer-events: none; background: linear-gradient(180deg, #0002, transparent 45%, #0009); }
.hero-slide { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 900ms; }
.hero-slide.is-active { opacity: 1; }
.visual-index { position: absolute; z-index: 3; top: 24px; left: 24px; color: #fff; font: 10px/1.6 var(--font-mono); letter-spacing: .12em; }
.visual-index::before { content: ""; display: block; width: 26px; height: 2px; margin-bottom: 10px; background: #f14360; }
.hero-caption { position: absolute; z-index: 3; bottom: 24px; left: 24px; right: 24px; margin: 0; color: #fff; font-size: 12px; }
.hero-controls { position: absolute; right: 0; bottom: 0; display: flex; gap: 8px; align-items: center; }
.hero-controls button { padding: 4px 8px; min-width: 32px; min-height: 32px; border: 0; border-bottom: 1px solid transparent; background: none; color: var(--muted); font: 11px var(--font-mono); }
.hero-controls button[aria-pressed="true"] { color: var(--red); border-color: var(--red); }
.hero-controls .pause-control { margin-left: 8px; font: 10px var(--font); }
.product-inset { position: absolute; z-index: 4; left: -32px; bottom: 68px; display: grid; grid-template-columns: 80px 1fr; align-items: center; gap: 14px; width: 233px; padding: 14px; background: #fff; box-shadow: 0 16px 48px #00000014; border: 1px solid #eee; border-radius: 3px; }
.product-inset img { width: 80px; height: 112px; object-fit: contain; mix-blend-mode: multiply; }
.product-inset small { display: block; color: var(--muted); font: 9px var(--font-mono); letter-spacing: .04em; }
.product-inset strong { display: block; margin: 6px 0 8px; font-weight: 500; font-size: 16px; }
.product-inset span { color: var(--red); font-size: 11px; }
.format-strip { border-block: 1px solid var(--line); }
.format-strip .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.format-strip a { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 23px 24px; border-right: 1px solid var(--line); }
.format-strip a:first-child { border-left: 1px solid var(--line); }
.format-strip strong { font-size: 20px; font-weight: 500; letter-spacing: -.035em; }
.format-strip small { color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .03em; }
.format-strip a:hover { background: var(--surface); }

/* 产品卡片使用真实素材，不在设计层新增产品参数。 */
.series-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.series-card { display: flex; flex-direction: column; min-width: 0; border: 1px solid var(--line); border-radius: 4px; overflow: hidden; transition: border-color var(--motion-fast), transform var(--motion); }
.series-card:hover { border-color: #91969a; transform: translateY(-4px); }
.series-visual { position: relative; overflow: hidden; isolation: isolate; aspect-ratio: 1.05; background: #e6e7e9; }
.series-visual > img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: darken; transition: transform 650ms, opacity 500ms; }
.series-card:hover .series-visual > img { transform: scale(1.035); }
.series-visual > img + img { position: absolute; inset: 0; opacity: 0; }
.series-card:hover .series-visual > img:first-child:not(:last-child), .series-card:focus-visible .series-visual > img:first-child:not(:last-child) { opacity: 0; }
.series-card:hover .series-visual > img + img, .series-card:focus-visible .series-visual > img + img { opacity: 1; }
.series-topline { position: absolute; z-index: 2; top: 16px; left: 16px; right: 16px; display: flex; justify-content: space-between; font: 9px var(--font-mono); color: #51565b; letter-spacing: .04em; }
.series-copy { display: flex; flex-direction: column; flex: 1; padding: 22px 20px; }
.series-copy h3 { margin-bottom: 8px; font-size: 25px; }
.series-copy p { min-height: 44px; margin-bottom: 24px; font-size: 12px; line-height: 1.65; }
.series-copy .card-link { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-top: auto; padding-top: 15px; border-top: 1px solid var(--line); font-size: 11px; font-weight: 600; }
.series-copy .card-link svg { width: 16px; height: 16px; color: var(--red); }
.portfolio-note { display: flex; justify-content: space-between; gap: 24px; margin-top: 22px; font-size: 12px; }
.portfolio-note p { margin: 0; }
.portfolio-note a { text-decoration: underline; text-underline-offset: 4px; }
.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 64px; padding-top: 40px; border-top: 1px solid var(--line); gap: 40px; }
.capability-grid article { position: relative; padding-left: 30px; }
.capability-grid .cap-number { position: absolute; top: 2px; left: 0; color: var(--red); font: 10px var(--font-mono); }
.capability-grid h3 { margin-bottom: 10px; font-size: 18px; }
.capability-grid p { max-width: 280px; margin: 0; font-size: 13px; }

/* 深色应用区与白色资料区交替，控制整页阅读节奏。 */
.applications { padding-block: var(--space-12); background: var(--dark); color: #fff; }
.applications .eyebrow { color: #a9afb2; }
.applications .section-head { align-items: flex-start; }
.applications .section-head h2 { max-width: 630px; }
.applications .section-head > p { color: #b1b5b8; padding-top: 5px; }
.application-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px; }
.application-card { min-width: 0; }
.application-photo { position: relative; aspect-ratio: .91; overflow: hidden; background: #30363a; border-radius: 3px; }
.application-photo img { width: 100%; height: 100%; object-fit: cover; opacity: .9; transition: transform 850ms, opacity var(--motion); }
.medical-graphic { display: grid; place-items: center; width: 100%; height: 100%; background: linear-gradient(145deg, #343b40, #242a2e); color: #c8ced0; }
.medical-graphic svg { width: 40%; height: auto; }
.application-card:hover .application-photo img { opacity: 1; transform: scale(1.035); }
.application-photo > span { position: absolute; left: 16px; top: 16px; padding: 2px 7px; background: #17191c80; color: #fff; font: 10px var(--font-mono); }
.application-card h3 { margin: 20px 0 10px; font-size: 20px; }
.application-card p { margin-bottom: 15px; color: #b1b5b8; font-size: 12px; }
.application-card a { display: inline-flex; align-items: center; gap: 12px; font-size: 11px; color: #fff; }
.application-card a svg { width: 14px; height: 14px; }
.application-disclaimer { max-width: 850px; margin: 35px 0 0; font-size: 10px; color: #9bA1a5; }

.documents { background: #f5f5f3; }
.documents-top { display: grid; grid-template-columns: 1.1fr 1fr; gap: 80px; align-items: start; margin-bottom: 40px; }
.documents-top h2 { max-width: 580px; }
.documents-description { padding-top: 35px; }
.documents-description p { font-size: 13px; }
.document-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin: 0 0 22px; padding-top: 22px; border-top: 1px solid #d6d7d5; }
.document-toolbar > p { margin: 0; font: 10px var(--font-mono); letter-spacing: .035em; }
.document-controls { display: flex; gap: 8px; }
.document-track { display: grid; grid-auto-flow: column; grid-auto-columns: calc((100% - 40px) / 3); gap: 20px; overflow-x: auto; overscroll-behavior-x: contain; scroll-snap-type: x mandatory; scrollbar-width: thin; scrollbar-color: #a9adae transparent; padding-bottom: 15px; }
.document-card { overflow: hidden; min-width: 0; background: #fff; border: 1px solid #e0e1de; border-radius: 4px; scroll-snap-align: start; }
.document-open { position: relative; display: block; width: 100%; padding: 25px; border: 0; border-bottom: 1px solid #ececea; background: #eeefec; color: var(--ink); }
.document-open img { width: 100%; height: 235px; object-fit: contain; transition: transform var(--motion); }
.document-open:hover img { transform: translateY(-3px); }
.document-open > span { position: absolute; bottom: 12px; right: 12px; display: grid; place-items: center; width: 29px; height: 29px; background: #fff; border: 1px solid var(--line); border-radius: 50%; }
.document-open > span svg { width: 13px; height: 13px; }
.document-copy { padding: 22px 24px 25px; }
.document-copy > small { display: block; margin-bottom: 12px; font: 9px var(--font-mono); color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.document-copy h3 { font-size: 19px; margin-bottom: 10px; }
.document-copy p { min-height: 40px; margin-bottom: 15px; font-size: 11px; }
.document-copy a { color: var(--red); font-size: 11px; }
.scope-note { margin: 22px 0 0; max-width: 990px; color: var(--muted); font-size: 11px; }
.document-modal { width: min(900px, calc(100vw - 32px)); max-height: 90dvh; padding: 0; border: 0; border-radius: 5px; background: #f4f4f2; color: var(--ink); }
.document-modal::backdrop { background: #111a; }
.modal-toolbar { position: sticky; top: 0; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 20px; background: #fff; border-bottom: 1px solid var(--line); }
.modal-toolbar h3 { margin: 0; font-size: 13px; }
.modal-toolbar button { flex-shrink: 0; }
.document-modal > img { width: 100%; max-height: 72dvh; object-fit: contain; padding: 20px; }
.modal-pdf-link { display: inline-block; margin: 0 20px 20px; color: var(--red); font-size: 13px; text-decoration: underline; }

.sourcing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.sourcing-copy h2 { max-width: 590px; }
.sourcing-copy > p:not(.eyebrow) { max-width: 460px; font-size: 14px; }
.sourcing-copy .text-link { margin-top: 15px; }
.sourcing-photos { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.sourcing-photos img { width: 100%; aspect-ratio: 1.18; object-fit: cover; border-radius: 3px; }
.sourcing-photos img:first-child { grid-column: 1 / -1; aspect-ratio: 1.9; }
.sourcing-photos > p { grid-column: 1 / -1; margin: 0; font-size: 9px; }
.news { border-top: 1px solid var(--line); }
.news-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.news-card { display: flex; flex-direction: column; min-width: 0; }
.news-image { aspect-ratio: 1.55; overflow: hidden; background: var(--surface); border-radius: 3px; }
.news-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 700ms; }
.news-card:hover .news-image img { transform: scale(1.035); }
.news-copy { display: flex; flex: 1; flex-direction: column; padding-top: 23px; }
.news-copy > small { margin-bottom: 13px; color: var(--red); font: 9px var(--font-mono); letter-spacing: .075em; }
.news-copy h3 { font-size: 22px; margin-bottom: 15px; }
.news-copy p { font-size: 12px; margin-bottom: 20px; }
.news-copy > span { display: flex; align-items: center; justify-content: space-between; padding-top: 15px; margin-top: auto; border-top: 1px solid var(--line); font-size: 11px; font-weight: 600; }
.news-copy > span svg { width: 16px; height: 16px; color: var(--red); }
.inquiry-band { background: var(--red); color: #fff; padding-block: 65px; }
.inquiry-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.inquiry-inner .eyebrow { color: #f5d5db; margin-bottom: 15px; }
.inquiry-inner h2 { margin: 0; max-width: 760px; font-size: clamp(32px, 3.8vw, 50px); }
.inquiry-inner .button { flex-shrink: 0; background: #fff; border-color: #fff; color: var(--ink); }
.inquiry-inner .button:hover { background: #f3e8eb; }
.site-footer { padding-top: 60px; background: #17191c; color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.3fr; gap: 70px; }
.footer-grid h2 { font-size: 18px; letter-spacing: -.02em; margin: 0 0 22px; }
.footer-grid h3 { margin-bottom: 20px; color: #999fa4; font: 10px var(--font-mono); text-transform: uppercase; letter-spacing: .08em; }
.footer-grid p, .footer-grid address { max-width: 380px; margin-bottom: 15px; color: #a9afb3; font-size: 11px; line-height: 1.8; font-style: normal; }
.footer-nav, .footer-contact { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; font-size: 12px; }
.footer-nav a:hover, .footer-contact a:hover { color: #ef879b; }
.footer-wordmark { overflow: hidden; margin: 54px 0 24px; color: #44484d; font-size: clamp(55px, 14.6vw, 208px); line-height: .95; font-weight: 600; letter-spacing: -.065em; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding-block: 22px; border-top: 1px solid #3b3e42; color: #999fa4; font-size: 9px; }
.footer-bottom a { text-decoration: underline; text-underline-offset: 3px; }

/* 默认内容可见；仅在观察器可用时渐进入场，减少动态效果时不隐藏。 */
.motion-enabled [data-reveal] { transition: opacity 650ms, transform 650ms; }
.motion-enabled [data-reveal]:not(.is-visible) { opacity: 0; transform: translateY(18px); }
@media (hover: none) { .series-card:hover { transform: none; } }
@media (min-width: 1600px) { .hero { padding-top: 72px; padding-bottom: 64px; } }
@media (max-width: 1050px) {
  .header-inner { gap: 20px; }
  .site-nav { gap: 20px; }
  .site-nav > a { font-size: 12px; }
  .hero-grid { gap: 32px; }
  .hero h1 { font-size: clamp(38px, 4.65vw, 52px); }
  .product-inset { left: -15px; width: 205px; grid-template-columns: 62px 1fr; }
  .product-inset img { width: 62px; height: 94px; }
  .series-grid { gap: 12px; }
  .series-copy { padding: 20px 16px; }
  .series-copy h3 { font-size: 23px; }
  .series-copy p { min-height: 65px; }
  .application-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 20px; }
  .application-photo { aspect-ratio: 1.4; }
  .documents-top, .sourcing-grid { gap: 40px; }
  .news-copy h3 { font-size: 20px; }
}
@media (max-width: 820px) {
  .contact-strip .strip-label { display: none; }
  .contact-strip .wrap { justify-content: center; }
  .strip-links { gap: 20px; }
  .header-inner { min-height: 76px; flex-wrap: wrap; gap: 0; }
  .menu-toggle { display: grid; place-items: center; }
  .site-nav { display: flex; flex: 1 0 100%; flex-direction: column; align-items: stretch; padding-block: 16px 24px; gap: 0; border-top: 1px solid var(--line); }
  .site-nav > a { padding-block: 13px; font-size: 15px; }
  .site-nav .button { margin-top: 13px; font-size: 13px; }
  .site-nav > a:not(.button)::after { display: none; }
  .menu-ready .site-nav:not(.is-open) { display: none; }
  .hero { padding-top: 32px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-copy { max-width: 660px; padding-block: 0; }
  .hero h1 { max-width: 640px; font-size: clamp(42px, 7.5vw, 64px); }
  .hero-description { max-width: 570px; }
  .hero-footnote { margin-top: 24px; }
  .hero-photograph { height: 430px; }
  .product-inset { left: 20px; bottom: 80px; }
  .format-strip a { padding: 20px 15px; flex-direction: column; align-items: flex-start; gap: 2px; }
  .format-strip strong { font-size: 19px; }
  .series-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
  .series-visual { aspect-ratio: 1.15; }
  .series-copy p { min-height: 40px; }
  .section, .applications { padding-block: 72px; }
  .section-head { gap: 28px; }
  .capability-grid { gap: 26px; }
  .capability-grid h3 { font-size: 16px; }
  .documents-top { grid-template-columns: 1fr; gap: 0; margin-bottom: 20px; }
  .documents-top h2 { margin-bottom: 15px; }
  .documents-description { max-width: 620px; padding-top: 0; }
  .document-track { grid-auto-columns: calc((100% - 20px) / 2); }
  .sourcing-grid { grid-template-columns: 1fr; gap: 36px; }
  .sourcing-copy h2 { max-width: 650px; }
  .sourcing-photos { grid-template-columns: 1.8fr 1fr 1fr; }
  .sourcing-photos img, .sourcing-photos img:first-child { grid-column: auto; aspect-ratio: 1.1; height: 100%; }
  .news-grid { gap: 18px; }
  .news-copy h3 { font-size: 18px; }
  .inquiry-inner { align-items: flex-start; flex-direction: column; gap: 26px; }
  .footer-grid { grid-template-columns: 1.8fr 1fr; gap: 36px; }
  .footer-contact { grid-column: 1 / -1; }
}
@media (max-width: 540px) {
  :root { --gutter: 20px; }
  .brand img { width: 47px; height: 34px; }
  .brand strong { font-size: 21px; }
  .brand small { font-size: 9px; }
  .contact-strip .wrap { min-height: 30px; }
  .strip-links { font-size: 9px; gap: 14px; }
  .hero h1 { font-size: clamp(36px, 9.4vw, 49px); line-height: 1.08; letter-spacing: -.05em; }
  .hero-kicker { font-size: 9px; letter-spacing: .07em; margin-bottom: 20px; }
  .hero-description { font-size: 14px; line-height: 1.75; }
  .hero-actions { gap: 10px; }
  .hero-actions .button { padding: 13px 15px; gap: 12px; font-size: 12px; }
  .hero-photograph { height: 370px; }
  .hero-caption { font-size: 10px; left: 18px; bottom: 18px; }
  .product-inset { bottom: 83px; grid-template-columns: 48px 1fr; width: 177px; gap: 10px; padding: 11px; }
  .product-inset img { width: 48px; height: 76px; }
  .product-inset strong { font-size: 14px; }
  .product-inset small { font-size: 8px; }
  .product-inset span { font-size: 10px; }
  .format-strip a { padding: 16px 9px; }
  .format-strip strong { font-size: 17px; }
  .format-strip small { font-size: 8px; }
  .section, .applications { padding-block: 56px; }
  .eyebrow { font-size: 10px; margin-bottom: 20px; }
  .section-head { align-items: flex-start; flex-direction: column; gap: 20px; margin-bottom: 30px; }
  .section-head > p { max-width: 360px; font-size: 13px; }
  .series-grid { gap: 12px; }
  .series-topline { top: 11px; left: 11px; right: 11px; font-size: 8px; }
  .series-copy { padding: 18px 13px; }
  .series-copy h3 { font-size: 21px; }
  .series-copy p { font-size: 11px; min-height: 53px; margin-bottom: 15px; }
  .series-copy .card-link { padding-top: 12px; gap: 4px; font-size: 10px; }
  .series-copy .card-link svg { width: 14px; height: 14px; }
  .portfolio-note { flex-direction: column; gap: 7px; font-size: 11px; }
  .capability-grid { grid-template-columns: 1fr; gap: 27px; margin-top: 40px; padding-top: 30px; }
  .capability-grid h3 { font-size: 19px; }
  .capability-grid p { max-width: 100%; }
  .application-grid { gap: 28px 14px; }
  .application-photo { aspect-ratio: .9; }
  .application-card h3 { font-size: 18px; }
  .application-card p { font-size: 11px; }
  .application-card a { gap: 8px; font-size: 10px; }
  .application-disclaimer { font-size: 9px; margin-top: 27px; }
  .document-track { grid-auto-columns: 86%; gap: 15px; }
  .document-open img { height: 225px; }
  .document-copy { padding: 20px; }
  .scope-note { font-size: 10px; }
  .modal-toolbar { gap: 12px; padding: 12px; }
  .modal-toolbar h3 { font-size: 11px; }
  .sourcing-photos { grid-template-columns: 1fr 1fr; }
  .sourcing-photos img:first-child { grid-column: 1 / -1; aspect-ratio: 1.9; }
  .sourcing-photos img { aspect-ratio: 1.4; }
  .news-grid { grid-template-columns: 1fr; gap: 35px; }
  .news-copy h3 { font-size: 24px; }
  .news-copy p { font-size: 13px; }
  .inquiry-band { padding-block: 48px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-contact { grid-column: auto; }
  .footer-grid h3 { margin-bottom: 5px; }
  .footer-nav { flex-direction: row; flex-wrap: wrap; gap: 12px 20px; }
  .footer-wordmark { margin-top: 40px; font-size: 15.3vw; }
  .footer-bottom { flex-direction: column; gap: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .motion-enabled [data-reveal]:not(.is-visible) { opacity: 1; transform: none; }
  .series-card:hover, .series-card:hover .series-visual > img { transform: none; }
}