:root {
  --navy-950: #061725;
  --navy-900: #071d31;
  --navy-800: #0b2b46;
  --navy-700: #123d5f;
  --orange: #f26a21;
  --orange-dark: #d75211;
  --ink: #102236;
  --muted: #657384;
  --line: #dbe2e8;
  --soft: #f4f7f9;
  --white: #fff;
  --container: 1180px;
  --shadow: 0 18px 54px rgba(4, 24, 42, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  overflow-x: clip;
  background: #fff;
  color: var(--ink);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
body.menu-open { overflow: hidden; }
img { display: block; max-width: 100%; }
a, p, dd, li { overflow-wrap: anywhere; }
a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
.container { width: min(var(--container), calc(100% - 48px)); margin-inline: auto; }
.skip-link { position: fixed; left: 12px; top: -50px; z-index: 200; padding: 10px 16px; background: #fff; color: #000; }
.skip-link:focus { top: 12px; }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,.16);
  transition: background .25s, box-shadow .25s;
}
.site-header.scrolled { background: rgba(6, 23, 37, .96); box-shadow: 0 10px 34px rgba(0,0,0,.18); backdrop-filter: blur(12px); }
.header-inner { height: 76px; display: flex; align-items: center; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; flex: none; }
.brand-mark { display: block; flex: none; width: 50px; height: 50px; border-radius: 50%; background: url("assets/images/zhihui-logo-badge-256.png") center / contain no-repeat; box-shadow: 0 0 0 1px rgba(255,255,255,.14); }
.brand-mark i { display: none; }
.brand-copy { display: grid; line-height: 1.1; }
.brand-copy strong { font-size: 22px; letter-spacing: .08em; }
.brand-copy small { margin-top: 5px; font: 600 8px/1 Arial, sans-serif; letter-spacing: .16em; opacity: .62; }
.site-nav { display: flex; align-items: center; justify-content: center; gap: 28px; margin-left: auto; }
.site-nav a { position: relative; font-size: 14px; color: rgba(255,255,255,.86); }
.site-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -10px; height: 2px; background: var(--orange); transition: right .2s; }
.site-nav a:hover { color: #fff; }
.site-nav a:hover::after { right: 0; }
.site-nav a.active { color: #fff; }
.site-nav a.active::after { right: 0; }
.menu-toggle { display: none; }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 25px; border: 1px solid var(--orange); border-radius: 3px; background: var(--orange); color: #fff; font-weight: 700; transition: background .2s, border-color .2s, transform .2s; }
.button:hover { background: var(--orange-dark); border-color: var(--orange-dark); transform: translateY(-2px); }
.button-small { min-height: 42px; padding-inline: 19px; font-size: 13px; }
.button-ghost { border-color: rgba(255,255,255,.58); background: rgba(4,21,35,.16); backdrop-filter: blur(5px); }
.button-ghost:hover { background: #fff; border-color: #fff; color: var(--navy-900); }

.hero { position: relative; min-height: 650px; display: flex; align-items: center; overflow: hidden; color: #fff; background: var(--navy-900) url("assets/images/zhihui-headquarters.jpg") center 48% / cover no-repeat; }
.hero::after { content: ""; position: absolute; inset: auto 0 0; height: 24%; background: linear-gradient(to top, rgba(4,19,31,.35), transparent); }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(3,18,31,.88) 0%, rgba(4,24,40,.56) 40%, rgba(4,24,40,.14) 72%, rgba(4,24,40,.06)); }
.hero-content { position: relative; z-index: 2; padding-top: 84px; }
.eyebrow { margin: 0 0 12px; color: var(--orange); font: 800 12px/1.3 Arial, sans-serif; letter-spacing: .16em; }
.eyebrow.light { color: #fff; opacity: .8; }
.hero h1 { margin: 0; max-width: 720px; font-size: clamp(50px, 6.2vw, 82px); line-height: 1.08; letter-spacing: -.045em; text-shadow: 0 5px 24px rgba(0,0,0,.35); }
.hero-lead { max-width: 600px; margin: 25px 0 31px; color: rgba(255,255,255,.88); font-size: 20px; }
.hero-actions { display: flex; gap: 12px; }
.hero-caption { position: absolute; left: 24px; top: calc(100% + 83px); margin: 0; display: flex; align-items: center; gap: 10px; font-size: 12px; color: rgba(255,255,255,.74); }
.hero-caption span { width: 26px; height: 1px; background: var(--orange); }
.hero-index { position: absolute; right: max(24px, calc((100vw - var(--container))/2)); bottom: 27px; z-index: 2; color: rgba(255,255,255,.68); font: 600 12px/1 Arial, sans-serif; letter-spacing: .14em; }

.trust-bar { position: relative; z-index: 4; background: var(--navy-900); color: #fff; }
.trust-grid { min-height: 116px; display: grid; grid-template-columns: repeat(4, 1fr); }
.trust-grid article { display: flex; align-items: center; justify-content: center; gap: 17px; position: relative; }
.trust-grid article + article::before { content: ""; position: absolute; left: 0; height: 48px; border-left: 1px solid rgba(255,255,255,.22); }
.trust-grid svg { width: 39px; height: 39px; fill: none; stroke: #fff; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; opacity: .9; }
.trust-grid div { display: grid; }
.trust-grid strong { color: var(--orange); font-size: 20px; line-height: 1.25; }
.trust-grid article:first-child strong { font-size: 32px; }
.trust-grid span { margin-top: 4px; color: rgba(255,255,255,.66); font-size: 12px; }

.section { padding: 105px 0; }
.section-heading { margin-bottom: 47px; }
.section-heading.center { text-align: center; }
.section-heading h2, .about-copy h2, .faq-intro h2, .contact-inner h2 { margin: 0; font-size: clamp(32px, 4vw, 46px); line-height: 1.22; letter-spacing: -.035em; }
.section-heading h2::after { content: ""; display: block; width: 32px; height: 3px; margin: 18px auto 0; background: var(--orange); }
.section-heading > p:last-child { max-width: 630px; margin: 19px auto 0; color: var(--muted); }
.split-heading { display: flex; align-items: end; justify-content: space-between; gap: 50px; }
.split-heading > p { max-width: 540px; margin: 0; color: var(--muted); }
.split-heading h2::after { margin-left: 0; }

.business-section { background: #fff; }
.business-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.business-card { position: relative; min-height: 340px; padding: 39px 30px 32px; border: 1px solid var(--line); background: #fff; overflow: hidden; transition: transform .25s, box-shadow .25s, border-color .25s; }
.business-card::before { content: ""; position: absolute; inset: auto 0 0; height: 3px; background: var(--orange); transform: scaleX(0); transform-origin: left; transition: transform .25s; }
.business-card:hover { transform: translateY(-6px); border-color: transparent; box-shadow: var(--shadow); }
.business-card:hover::before { transform: scaleX(1); }
.business-card.featured { background: var(--navy-900); color: #fff; border-color: var(--navy-900); }
.card-no { position: absolute; right: 24px; top: 20px; color: #cbd4db; font: 700 12px/1 Arial, sans-serif; letter-spacing: .12em; }
.featured .card-no { color: rgba(255,255,255,.32); }
.line-icon { width: 58px; color: var(--orange); margin-bottom: 32px; }
.line-icon svg { width: 100%; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.business-card h3 { margin: 0 0 15px; font-size: 23px; }
.business-card p { margin: 0; color: var(--muted); font-size: 14px; }
.business-card.featured p { color: rgba(255,255,255,.67); }
.business-card a { position: absolute; left: 30px; bottom: 29px; color: var(--ink); font-size: 13px; font-weight: 700; }
.business-card.featured a { color: #fff; }
.business-card a span { color: var(--orange); padding-left: 6px; }

.capacity-section { background: var(--soft); }
.capacity-layout { display: grid; grid-template-columns: 38% 1fr; gap: 22px; }
.factory-card { display: flex; flex-direction: column; background: var(--navy-900); color: #fff; }
.factory-card-photo { height: 258px; overflow: hidden; }
.factory-card-photo img, .workshop-feature > img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.factory-card:hover img, .workshop-feature:hover > img { transform: scale(1.035); }
.factory-card-body { padding: 30px 32px 35px; }
.tag { display: inline-block; padding: 5px 10px; border: 1px solid rgba(242,106,33,.7); color: #ff9a62; font-size: 11px; }
.factory-card h3 { margin: 19px 0 8px; font-size: 25px; }
.factory-card p { margin: 0 0 12px; color: rgba(255,255,255,.72); }
.factory-card small { color: rgba(255,255,255,.46); }
.workshop-feature { position: relative; min-height: 456px; overflow: hidden; }
.workshop-feature > img { position: absolute; inset: 0; }
.workshop-feature::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(4,20,33,.83), transparent 50%); }
.workshop-overlay { position: absolute; z-index: 2; inset: auto 34px 31px; color: #fff; }
.workshop-overlay p { margin: 0 0 6px; color: #ff9a62; font-size: 12px; font-weight: 700; letter-spacing: .12em; }
.workshop-overlay strong { font-size: 23px; }
.credential-note { margin-top: 22px; display: flex; align-items: center; gap: 18px; padding: 22px 27px; border: 1px solid #d9e2e8; background: #fff; }
.credential-note svg { width: 42px; flex: none; fill: none; stroke: var(--orange); stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.credential-note div { display: grid; grid-template-columns: 150px 1fr; align-items: center; gap: 18px; }
.credential-note strong { font-size: 15px; }
.credential-note span { color: var(--muted); font-size: 13px; }

.application-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.application-grid article { position: relative; min-height: 220px; display: flex; align-items: end; padding: 28px; background: #e9eef2; overflow: hidden; }
.application-grid article::before { content: ""; position: absolute; inset: 0; opacity: .28; background: repeating-linear-gradient(115deg, transparent 0 19px, #b2bdc6 20px 21px); }
.application-grid article:nth-child(even) { background: #dce5eb; }
.application-grid span { position: absolute; top: 18px; right: 20px; color: #8f9ba5; font: 700 11px/1 Arial, sans-serif; letter-spacing: .12em; }
.application-grid div { position: relative; z-index: 1; }
.application-grid h3 { margin: 0 0 6px; font-size: 22px; }
.application-grid p { margin: 0; color: #596979; font-size: 13px; }

.process-section { position: relative; overflow: hidden; background: var(--navy-950); color: #fff; }
.process-section::before { content: ""; position: absolute; width: 48%; height: 160%; right: -7%; top: -35%; border: 1px solid rgba(255,255,255,.06); transform: rotate(28deg); }
.light-heading h2::after { background: var(--orange); }
.process-list { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; margin: 0; padding: 0; list-style: none; }
.process-list li { position: relative; min-height: 164px; padding: 27px 25px; border: 1px solid rgba(255,255,255,.14); border-right: 0; }
.process-list li:last-child { border-right: 1px solid rgba(255,255,255,.14); }
.process-list b { display: block; margin-bottom: 25px; color: var(--orange); font: 700 12px/1 Arial, sans-serif; }
.process-list span { display: block; margin-bottom: 8px; font-size: 18px; font-weight: 700; }
.process-list small { color: rgba(255,255,255,.48); font-size: 12px; }

.about-layout { display: grid; grid-template-columns: 52% 1fr; align-items: center; gap: 82px; }
.about-collage { position: relative; padding: 0 70px 68px 0; }
.about-main { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.about-small { position: absolute; right: 0; bottom: 0; width: 47%; aspect-ratio: 1.2; object-fit: cover; border: 9px solid #fff; box-shadow: var(--shadow); }
.about-stamp { position: absolute; left: -25px; bottom: 25px; width: 132px; height: 132px; display: grid; place-content: center; border-radius: 50%; background: var(--orange); color: #fff; text-align: center; line-height: 1.35; font-size: 12px; box-shadow: 0 15px 35px rgba(210,80,15,.28); }
.about-stamp b { display: block; font-size: 20px; }
.about-copy h2 { margin-bottom: 24px; }
.about-copy > p:not(.eyebrow) { color: var(--muted); }
.about-copy dl { margin: 27px 0; border-top: 1px solid var(--line); }
.about-copy dl div { display: grid; grid-template-columns: 145px 1fr; gap: 20px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.about-copy dt { font-weight: 700; }
.about-copy dd { margin: 0; color: var(--muted); font-size: 13px; }
.text-link { font-weight: 700; }
.text-link span { margin-left: 10px; color: var(--orange); }

.faq-section { padding: 92px 0; background: var(--soft); }
.faq-layout { display: grid; grid-template-columns: 32% 1fr; gap: 90px; }
.faq-intro h2 { margin-bottom: 18px; }
.faq-intro > p:last-child { color: var(--muted); }
.faq-list { border-top: 1px solid #cfd8df; }
.faq-item { border-bottom: 1px solid #cfd8df; }
.faq-item button { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 22px 0; border: 0; background: transparent; color: var(--ink); font-family: inherit; font-size: 16px; font-weight: 700; line-height: 1.5; text-align: left; cursor: pointer; }
.faq-item button b { color: var(--orange); font-size: 25px; font-weight: 400; transition: transform .25s; }
.faq-item > div { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .25s; }
.faq-item > div p { overflow: hidden; margin: 0; color: var(--muted); font-size: 14px; }
.faq-item.open > div { grid-template-rows: 1fr; }
.faq-item.open > div p { padding-bottom: 23px; }
.faq-item.open button b { transform: rotate(45deg); }

.contact-section { position: relative; overflow: hidden; padding: 80px 0; background: var(--navy-800); color: #fff; }
.contact-backdrop { position: absolute; inset: 0; opacity: .15; background: url("assets/images/office-meeting.jpg") center 43% / cover no-repeat; }
.contact-section::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(3,18,31,.95), rgba(7,35,56,.74)); }
.contact-inner { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 50px; }
.contact-inner h2 { margin-bottom: 12px; }
.contact-inner p:last-child { margin: 0; color: rgba(255,255,255,.66); }
.contact-actions { display: flex; gap: 12px; flex: none; }

.site-footer { background: var(--navy-950); color: #fff; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.6fr; gap: 65px; padding-top: 68px; padding-bottom: 58px; }
.footer-brand p { max-width: 280px; color: rgba(255,255,255,.45); font-size: 13px; }
.footer-grid h3 { margin: 2px 0 17px; font-size: 14px; }
.footer-grid > div:not(.footer-brand), .footer-grid address { display: flex; flex-direction: column; align-items: flex-start; }
.footer-grid a, .footer-grid address span { margin: 4px 0; color: rgba(255,255,255,.48); font-size: 12px; font-style: normal; }
.footer-grid a:hover { color: #fff; }
.footer-bottom { min-height: 66px; display: flex; align-items: center; justify-content: space-between; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.34); font-size: 11px; }
.floating-phone { position: fixed; right: 20px; bottom: 20px; z-index: 90; display: none; align-items: center; gap: 8px; min-height: 46px; padding: 0 15px; border-radius: 30px; background: var(--orange); color: #fff; box-shadow: 0 10px 28px rgba(0,0,0,.22); font-size: 13px; font-weight: 700; }
.floating-phone svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* Inner pages */
.inner-hero { position: relative; min-height: 430px; display: flex; align-items: end; overflow: hidden; background: var(--navy-900) center / cover no-repeat; color: #fff; }
.inner-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(3,18,31,.92), rgba(4,24,40,.52) 60%, rgba(4,24,40,.24)); }
.inner-hero.business-hero { background-image: url("assets/images/workshop-team.jpg"); background-position: center 44%; }
.inner-hero.capability-hero { background-image: url("assets/images/factory-aerial.jpg"); }
.inner-hero.about-hero { background-image: url("assets/images/office-building.jpg"); background-position: center 46%; }
.inner-hero.contact-hero { background-image: url("assets/images/factory-facade.jpg"); background-position: center 48%; }
.inner-hero-content { position: relative; z-index: 1; padding-top: 125px; padding-bottom: 58px; }
.breadcrumbs { display: flex; align-items: center; gap: 8px; margin-bottom: 24px; color: rgba(255,255,255,.55); font-size: 12px; }
.breadcrumbs a:hover { color: #fff; }
.breadcrumbs i { width: 20px; height: 1px; background: rgba(255,255,255,.35); }
.inner-hero h1 { margin: 0; font-size: clamp(42px, 5vw, 66px); line-height: 1.15; letter-spacing: -.04em; }
.inner-hero p:last-child { max-width: 670px; margin: 18px 0 0; color: rgba(255,255,255,.75); font-size: 17px; }
.page-intro { display: grid; grid-template-columns: 36% 1fr; gap: 90px; align-items: start; }
.page-intro > *, .service-detail > *, .entity-grid > *, .contact-grid > *, .about-layout > * { min-width: 0; }
.page-intro h2 { margin: 0; font-size: clamp(32px, 4vw, 46px); line-height: 1.2; letter-spacing: -.035em; }
.page-intro-copy { padding-left: 34px; border-left: 3px solid var(--orange); }
.page-intro-copy p { margin-top: 0; color: var(--muted); }
.page-intro-copy p:last-child { margin-bottom: 0; }
.content-band { padding: 86px 0; background: var(--soft); }
.service-detail-list { display: grid; gap: 22px; }
.service-detail { display: grid; grid-template-columns: 34% 1fr; min-height: 285px; background: #fff; border: 1px solid var(--line); }
.service-detail-visual { position: relative; display: grid; place-content: center; min-height: 285px; overflow: hidden; background: var(--navy-900); color: #fff; }
.service-detail-visual::before { content: ""; position: absolute; inset: -20%; background: repeating-linear-gradient(125deg, transparent 0 30px, rgba(255,255,255,.05) 31px 32px); transform: rotate(-8deg); }
.service-detail-visual svg { position: relative; z-index: 1; width: 92px; fill: none; stroke: var(--orange); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.service-detail-visual span { position: absolute; left: 24px; top: 21px; color: rgba(255,255,255,.36); font: 700 12px/1 Arial, sans-serif; letter-spacing: .15em; }
.service-detail-copy { padding: 38px 44px; }
.service-detail-copy h2 { margin: 0 0 11px; font-size: 27px; }
.service-detail-copy > p { margin: 0 0 22px; color: var(--muted); }
.bullet-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px 24px; margin: 0; padding: 0; list-style: none; }
.bullet-grid li { position: relative; padding-left: 17px; font-size: 13px; }
.bullet-grid li::before { content: ""; position: absolute; left: 0; top: .72em; width: 6px; height: 2px; background: var(--orange); }
.callout-strip { padding: 48px 0; background: var(--navy-900); color: #fff; }
.callout-strip-inner { display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.callout-strip h2 { margin: 0 0 6px; font-size: 28px; }
.callout-strip p { margin: 0; color: rgba(255,255,255,.58); }
.entity-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.entity-card { padding: 37px; border: 1px solid var(--line); background: #fff; }
.entity-card.primary { border-top: 4px solid var(--orange); }
.entity-card.secondary { border-top: 4px solid var(--navy-700); }
.entity-card .tag { margin-bottom: 16px; }
.entity-card.secondary .tag { border-color: #8ba0b0; color: var(--navy-700); }
.entity-card h2 { margin: 0 0 12px; font-size: 25px; }
.entity-card > p { color: var(--muted); }
.fact-list { margin: 24px 0 0; border-top: 1px solid var(--line); }
.fact-list div { display: grid; grid-template-columns: 125px 1fr; gap: 18px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.fact-list dt { font-size: 13px; font-weight: 700; }
.fact-list dd { margin: 0; color: var(--muted); font-size: 13px; }
.evidence-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.evidence-card { min-height: 230px; padding: 29px; border: 1px solid var(--line); background: #fff; }
.evidence-card svg { width: 46px; margin-bottom: 24px; fill: none; stroke: var(--orange); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.evidence-card h3 { margin: 0 0 9px; font-size: 19px; }
.evidence-card p { margin: 0; color: var(--muted); font-size: 13px; }
.evidence-card small { display: block; margin-top: 14px; color: #8c98a3; }
.photo-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; grid-template-rows: 250px 250px; gap: 12px; }
.photo-grid figure { position: relative; margin: 0; overflow: hidden; }
.photo-grid figure:first-child { grid-row: 1 / 3; }
.photo-grid figure:nth-child(2) { grid-column: 2 / 4; }
.photo-grid img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s; }
.photo-grid figure:hover img { transform: scale(1.035); }
.photo-grid figcaption { position: absolute; inset: auto 0 0; padding: 28px 20px 15px; color: #fff; font-size: 12px; background: linear-gradient(to top, rgba(3,18,31,.8), transparent); }
.principle-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.principle-card { padding: 31px; background: var(--soft); }
.principle-card span { color: var(--orange); font: 700 12px/1 Arial, sans-serif; }
.principle-card h3 { margin: 38px 0 9px; font-size: 21px; }
.principle-card p { margin: 0; color: var(--muted); font-size: 13px; }
.contact-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.contact-card { min-height: 220px; padding: 32px; border: 1px solid var(--line); background: #fff; }
.contact-card svg { width: 40px; fill: none; stroke: var(--orange); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.contact-card h2 { margin: 28px 0 8px; font-size: 20px; }
.contact-card p, .contact-card address { margin: 0; color: var(--muted); font-size: 13px; font-style: normal; }
.contact-card a { display: inline-block; margin-top: 14px; font-weight: 700; }
.prep-layout { display: grid; grid-template-columns: 42% 1fr; gap: 80px; align-items: center; }
.prep-photo { position: relative; }
.prep-photo img { width: 100%; aspect-ratio: 1.15; object-fit: cover; }
.prep-photo::after { content: ""; position: absolute; inset: 18px -18px -18px 18px; z-index: -1; border: 2px solid var(--orange); }
.prep-copy h2 { margin: 0 0 13px; font-size: 36px; line-height: 1.25; }
.prep-copy > p { color: var(--muted); }
.check-list { margin: 25px 0 0; padding: 0; list-style: none; counter-reset: item; }
.check-list li { counter-increment: item; position: relative; padding: 13px 0 13px 49px; border-top: 1px solid var(--line); }
.check-list li::before { content: counter(item, decimal-leading-zero); position: absolute; left: 0; color: var(--orange); font: 700 11px/1.8 Arial, sans-serif; }
.about-facts { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 70px; border: 1px solid var(--line); }
.about-facts article { min-height: 130px; display: flex; flex-direction: column; justify-content: center; padding: 25px 30px; }
.about-facts article + article { border-left: 1px solid var(--line); }
.about-facts strong { color: var(--orange); font-size: 32px; line-height: 1.15; }
.about-facts span { margin-top: 7px; color: var(--muted); font-size: 12px; }
.timeline-section { background: var(--soft); }
.company-timeline { position: relative; display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; margin: 0; padding: 32px 0 0; list-style: none; }
.company-timeline::before { content: ""; position: absolute; left: 0; right: 0; top: 49px; height: 1px; background: #cbd5dc; }
.company-timeline li { position: relative; padding: 48px 32px 0 0; }
.company-timeline li::before { content: ""; position: absolute; top: 11px; left: 0; width: 13px; height: 13px; border: 5px solid var(--soft); border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 1px var(--orange); }
.company-timeline time { position: absolute; top: -20px; left: 0; color: var(--orange); font: 800 17px/1 Arial, sans-serif; }
.company-timeline h3 { margin: 0 0 9px; font-size: 18px; }
.company-timeline p { margin: 0; color: var(--muted); font-size: 12px; }
.management-section { position: relative; overflow: hidden; background: var(--navy-950); color: #fff; }
.management-section .section-heading > p:last-child { color: rgba(255,255,255,.55); }
.management-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.management-grid article { background: var(--navy-800); }
.management-grid img { width: 100%; height: 235px; object-fit: cover; }
.management-grid article > div { position: relative; padding: 27px 28px 30px; }
.management-grid span { position: absolute; right: 23px; top: 24px; color: rgba(255,255,255,.25); font: 700 12px/1 Arial, sans-serif; }
.management-grid h3 { margin: 0 0 9px; font-size: 20px; }
.management-grid p { margin: 0; color: rgba(255,255,255,.56); font-size: 12px; }
.service-area-section { background: #fff; }
.service-area-layout { display: grid; grid-template-columns: 1.25fr .75fr; gap: 85px; align-items: center; }
.service-area-layout h2 { margin: 0 0 16px; font-size: 40px; line-height: 1.2; }
.service-area-layout > div:first-child > p:not(.eyebrow) { max-width: 650px; color: var(--muted); }
.area-tags { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 26px; }
.area-tags span { padding: 8px 15px; border: 1px solid var(--line); color: var(--navy-700); font-size: 12px; }
.service-area-note { padding: 35px; border-left: 4px solid var(--orange); background: var(--soft); }
.service-area-note b { font-size: 18px; }
.service-area-note p { color: var(--muted); font-size: 13px; }
.service-area-note .text-link { display: inline-block; margin-top: 8px; font-size: 13px; }

@media (max-width: 1040px) {
  .site-nav { gap: 17px; }
  .site-nav a { font-size: 13px; }
  .header-cta { display: none; }
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .business-card { min-height: 330px; }
  .application-grid { grid-template-columns: repeat(2, 1fr); }
  .about-layout { gap: 45px; }
  .footer-grid { gap: 35px; }
  .page-intro { gap: 50px; }
  .prep-layout { gap: 45px; }
  .service-area-layout { gap: 45px; }
}

@media (max-width: 780px) {
  .container { width: min(100% - 36px, var(--container)); }
  .header-inner { height: 68px; }
  .brand-copy strong { font-size: 19px; }
  .brand-copy small { font-size: 7px; }
  .brand-mark { width: 43px; height: 43px; margin-right: -2px; }
  .menu-toggle { margin-left: auto; width: 42px; height: 42px; display: grid; align-content: center; gap: 5px; padding: 8px; border: 0; background: transparent; color: #fff; }
  .menu-toggle span { display: block; height: 2px; background: currentColor; transition: transform .2s, opacity .2s; }
  .menu-toggle b { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
  .site-nav { position: fixed; inset: 68px 0 auto; display: grid; gap: 0; padding: 14px 18px 24px; background: rgba(6,23,37,.98); transform: translateY(-120%); opacity: 0; pointer-events: none; transition: transform .25s, opacity .25s; }
  .site-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .site-nav a { padding: 15px 7px; border-bottom: 1px solid rgba(255,255,255,.1); font-size: 15px; }
  .site-nav a::after { display: none; }
  .hero { min-height: 640px; background-position: 54% center; align-items: flex-end; }
  .hero-shade { background: linear-gradient(to top, rgba(3,18,31,.94) 5%, rgba(4,24,40,.55) 68%, rgba(4,24,40,.25)); }
  .hero-content { padding: 0 0 82px; }
  .hero h1 { font-size: clamp(42px, 13vw, 62px); }
  .hero-lead { margin: 18px 0 25px; font-size: 16px; }
  .hero-actions { flex-wrap: wrap; }
  .hero-caption { left: 0; top: calc(100% + 40px); }
  .hero-index { display: none; }
  .trust-grid { grid-template-columns: repeat(2, 1fr); padding: 13px 0; }
  .trust-grid article { min-height: 92px; justify-content: flex-start; padding-left: 13px; }
  .trust-grid article + article::before { display: none; }
  .trust-grid article:nth-child(even) { border-left: 1px solid rgba(255,255,255,.16); }
  .trust-grid svg { width: 30px; }
  .trust-grid strong, .trust-grid article:first-child strong { font-size: 17px; }
  .section { padding: 75px 0; }
  .section-heading { margin-bottom: 35px; }
  .section-heading h2, .about-copy h2, .faq-intro h2, .contact-inner h2 { font-size: 32px; }
  .split-heading { display: block; }
  .split-heading > p { margin-top: 20px; }
  .capacity-layout { grid-template-columns: 1fr; }
  .workshop-feature { min-height: 380px; }
  .credential-note { align-items: flex-start; }
  .credential-note div { display: block; }
  .credential-note strong, .credential-note span { display: block; }
  .credential-note span { margin-top: 5px; }
  .process-list { grid-template-columns: 1fr; }
  .process-list li { min-height: auto; padding: 20px 22px 20px 78px; border-right: 1px solid rgba(255,255,255,.14); border-bottom: 0; }
  .process-list li:last-child { border-bottom: 1px solid rgba(255,255,255,.14); }
  .process-list b { position: absolute; left: 25px; top: 26px; margin: 0; }
  .process-list span { margin: 0 0 3px; }
  .about-layout { grid-template-columns: 1fr; }
  .about-collage { margin-left: 20px; }
  .faq-layout { grid-template-columns: 1fr; gap: 36px; }
  .contact-inner { display: block; }
  .contact-actions { margin-top: 27px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
  .floating-phone { display: flex; }
  .inner-hero { min-height: 390px; }
  .inner-hero-content { padding-top: 110px; padding-bottom: 48px; }
  .page-intro { grid-template-columns: 1fr; gap: 25px; }
  .page-intro-copy { padding-left: 22px; }
  .service-detail { grid-template-columns: 1fr; }
  .service-detail-visual { min-height: 190px; }
  .entity-grid, .contact-grid { grid-template-columns: 1fr; }
  .evidence-grid, .principle-grid { grid-template-columns: repeat(2, 1fr); }
  .photo-grid { grid-template-columns: 1fr 1fr; grid-template-rows: 300px 220px 220px; }
  .photo-grid figure:first-child { grid-column: 1 / 3; grid-row: auto; }
  .photo-grid figure:nth-child(2) { grid-column: auto; }
  .callout-strip-inner { align-items: flex-start; }
  .prep-layout { grid-template-columns: 1fr; }
  .about-facts { grid-template-columns: repeat(2, 1fr); }
  .about-facts article:nth-child(3) { border-left: 0; border-top: 1px solid var(--line); }
  .about-facts article:nth-child(4) { border-top: 1px solid var(--line); }
  .company-timeline { grid-template-columns: 1fr; padding: 0 0 0 30px; }
  .company-timeline::before { inset: 0 auto 0 6px; width: 1px; height: auto; }
  .company-timeline li { padding: 0 0 32px 25px; }
  .company-timeline li::before { top: 4px; left: -30px; }
  .company-timeline time { position: static; display: block; margin-bottom: 10px; }
  .management-grid { grid-template-columns: 1fr; }
  .management-grid article { display: grid; grid-template-columns: 42% 1fr; }
  .management-grid img { height: 100%; min-height: 205px; }
  .service-area-layout { grid-template-columns: 1fr; }
}

@media (max-width: 520px) {
  .container { width: min(100% - 28px, var(--container)); }
  .hero { min-height: 610px; }
  .hero h1 { font-size: clamp(40px, 11vw, 48px); letter-spacing: -.055em; }
  .hero-lead { max-width: 330px; line-height: 1.65; }
  .hero-actions .button { width: 100%; }
  .trust-grid { grid-template-columns: 1fr 1fr; }
  .trust-grid article { gap: 10px; padding-left: 6px; }
  .trust-grid span { font-size: 10px; }
  .trust-grid svg { width: 27px; }
  .business-grid { grid-template-columns: 1fr; }
  .business-card { min-height: 300px; }
  .application-grid { grid-template-columns: 1fr; }
  .application-grid article { min-height: 170px; }
  .factory-card-photo { height: 220px; }
  .workshop-feature { min-height: 300px; }
  .workshop-overlay { inset: auto 22px 22px; }
  .workshop-overlay strong { font-size: 18px; }
  .about-collage { padding-right: 36px; }
  .about-small { width: 55%; }
  .about-stamp { left: -14px; width: 106px; height: 106px; }
  .about-stamp b { font-size: 17px; }
  .about-copy dl div { grid-template-columns: 1fr; gap: 4px; }
  .contact-actions { display: grid; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { padding: 19px 0 80px; display: grid; gap: 7px; }
  .service-detail-copy { padding: 28px 24px; }
  .bullet-grid { grid-template-columns: 1fr; }
  .evidence-grid, .principle-grid { grid-template-columns: 1fr; }
  .photo-grid { display: grid; grid-template-columns: 1fr; grid-template-rows: repeat(4, 230px); }
  .photo-grid figure:first-child, .photo-grid figure:nth-child(2) { grid-column: auto; }
  .callout-strip-inner { display: block; }
  .callout-strip .button { margin-top: 22px; width: 100%; }
  .fact-list div { grid-template-columns: 1fr; gap: 4px; }
  .about-facts { margin-top: 45px; }
  .about-facts article { min-height: 110px; padding: 20px; }
  .about-facts strong { font-size: 27px; }
  .management-grid article { display: block; }
  .management-grid img { height: 220px; }
  .service-area-layout h2 { font-size: 32px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}