:root {
  --max: 1440px;
  --gutter: clamp(22px, 4vw, 68px);
  --header-height: 76px;
  --preview-height: 46px;
  --radius: 0;
  --bg: #050705;
  --surface: #101410;
  --surface-2: #171c17;
  --paper: #f4f6f3;
  --ink: #0a0d0a;
  --text: #f7faf6;
  --muted: #a6afa7;
  --line: rgba(255,255,255,.15);
  --line-light: rgba(10,13,10,.16);
  --accent: #93ea3c;
  --accent-ink: #162008;
  --shadow: 0 30px 90px rgba(0,0,0,.28);
  color-scheme: dark;
  font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + var(--preview-height) + 12px);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-width: 320px; }
body { overflow-x: hidden; background: var(--bg); color: var(--text); }
img, video { max-width: 100%; }
button, input, textarea { font: inherit; }
a { color: inherit; }

.skip-link { position: fixed; z-index: 200; left: 18px; top: -80px; padding: 12px 16px; color: #000; background: var(--accent); }
.skip-link:focus { top: 12px; }
.page-shell { width: min(var(--max), calc(100% - var(--gutter) * 2)); margin-inline: auto; }

.concept-switcher {
  position: fixed;
  z-index: 120;
  inset: 0 0 auto;
  height: var(--preview-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 var(--gutter);
  color: #e8eee8;
  background: #151915;
  border-bottom: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 10px 35px rgba(0,0,0,.18);
}
.concept-switcher > span { color: #8f988f; font-size: 10px; font-weight: 850; letter-spacing: .16em; }
.concept-switcher > div { height: 100%; display: flex; }
.concept-switcher button { min-width: 185px; height: 100%; display: flex; align-items: center; gap: 9px; padding: 0 16px; color: #aeb6ae; background: transparent; border: 0; border-left: 1px solid rgba(255,255,255,.1); cursor: pointer; }
.concept-switcher button:last-child { border-right: 1px solid rgba(255,255,255,.1); }
.concept-switcher button b { color: var(--accent); font-size: 10px; }
.concept-switcher button span { font-size: 12px; font-weight: 750; }
.concept-switcher button.is-active { color: #081006; background: var(--accent); }
.concept-switcher button.is-active b { color: inherit; }

.site-header {
  position: fixed;
  z-index: 110;
  left: 0;
  right: 0;
  top: var(--preview-height);
  height: var(--header-height);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 44px;
  padding-inline: var(--gutter);
  background: rgba(5,7,5,.78);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(20px);
  transition: background .25s ease, height .25s ease;
}
.site-header.is-scrolled { background: rgba(5,7,5,.95); }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; white-space: nowrap; }
.brand-signal { width: 19px; height: 36px; display: inline-block; background: var(--accent); transform: skew(-12deg); box-shadow: 14px 0 0 color-mix(in srgb, var(--accent) 38%, transparent); }
.brand-name { margin-left: 9px; font-size: 22px; font-weight: 900; letter-spacing: .04em; }
.brand-type { color: var(--muted); font-size: 10px; font-weight: 850; letter-spacing: .2em; }
.site-nav { justify-self: end; display: flex; align-items: center; gap: 30px; }
.site-nav a { color: color-mix(in srgb, var(--text) 78%, transparent); font-size: 13px; font-weight: 750; text-decoration: none; }
.site-nav a:hover { color: var(--text); }
.site-nav .nav-cta { min-height: 42px; display: inline-flex; align-items: center; padding: 0 18px; color: var(--accent-ink); background: var(--accent); }
.header-actions { display: flex; align-items: center; gap: 12px; }
.language-toggle, .menu-toggle { min-height: 42px; color: var(--text); background: transparent; border: 1px solid var(--line); cursor: pointer; }
.language-toggle { min-width: 64px; padding-inline: 14px; font-size: 12px; font-weight: 850; }
.menu-toggle { width: 44px; display: none; padding: 0 10px; }
.menu-toggle span { display: block; width: 100%; height: 2px; margin: 6px 0; background: currentColor; }

.hero { position: relative; min-height: 940px; overflow: hidden; }
.hero-media, .hero-shade { position: absolute; inset: 0; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }
.hero-shade { background: linear-gradient(90deg, rgba(2,4,2,.96) 0%, rgba(2,4,2,.72) 48%, rgba(2,4,2,.1) 100%), linear-gradient(0deg, rgba(2,4,2,.75), transparent 55%); }
.hero-layout { position: relative; z-index: 2; min-height: 940px; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(320px, .55fr); align-items: end; gap: 70px; padding-top: calc(var(--header-height) + var(--preview-height) + 110px); padding-bottom: 62px; }
.hero-copy { min-width: 0; align-self: center; max-width: 980px; }
.eyebrow, .section-index { margin: 0; color: var(--accent); font-size: 11px; font-weight: 900; letter-spacing: .17em; text-transform: uppercase; }
.hero h1 { max-width: 1020px; margin: 28px 0 0; font-size: clamp(58px, 7.5vw, 118px); font-weight: 840; line-height: .9; letter-spacing: -.062em; }
.hero-lede { max-width: 720px; margin: 34px 0 0; color: color-mix(in srgb, var(--text) 72%, transparent); font-size: clamp(17px, 1.45vw, 21px); line-height: 1.58; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 26px; margin-top: 38px; }
.button { min-height: 54px; display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; padding: 0 22px; font-size: 14px; font-weight: 850; text-decoration: none; border: 0; cursor: pointer; }
.button-primary { color: var(--accent-ink); background: var(--accent); }
.button-secondary { color: var(--ink); background: transparent; border: 1px solid rgba(8,12,9,.35); }
.text-link { display: inline-flex; gap: 28px; padding: 0 0 7px; font-size: 14px; font-weight: 800; text-decoration: none; border-bottom: 1px solid currentColor; }
.hero-proof { display: grid; align-self: end; border-top: 1px solid var(--line); }
.hero-proof article { min-height: 126px; display: grid; align-content: center; padding: 20px 0; border-bottom: 1px solid var(--line); }
.hero-proof strong { color: var(--accent); font-size: clamp(30px, 3.5vw, 52px); line-height: 1; letter-spacing: -.05em; }
.hero-proof span { margin-top: 9px; color: color-mix(in srgb, var(--text) 65%, transparent); font-size: 12px; }

.trust-strip { background: var(--accent); color: var(--accent-ink); }
.trust-grid { min-height: 84px; display: grid; grid-template-columns: repeat(4, 1fr); align-items: center; }
.trust-grid span { min-height: 84px; display: grid; place-items: center start; padding: 0 24px; font-size: 12px; font-weight: 850; border-left: 1px solid color-mix(in srgb, var(--accent-ink) 20%, transparent); }
.trust-grid span:last-child { border-right: 1px solid color-mix(in srgb, var(--accent-ink) 20%, transparent); }

.company, .applications, .film { padding: 120px 0; background: var(--bg); }
.products, .factory { padding: 120px 0; color: var(--ink); background: var(--paper); }
.company-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, .6fr); gap: 60px 100px; }
.section-heading h2, .proof h2, .film h2, .contact h2 { margin: 18px 0 0; font-size: clamp(46px, 5.8vw, 88px); line-height: .96; letter-spacing: -.055em; }
.company-copy { align-self: end; }
.company-copy p { margin: 0 0 22px; color: var(--muted); font-size: 18px; line-height: 1.68; }
.company-copy p:last-child { padding-left: 18px; border-left: 2px solid var(--accent); }
.company-image { grid-column: 1 / -1; }
.image-frame { position: relative; min-height: 620px; overflow: hidden; margin: 0; background: var(--surface); }
.image-frame img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.image-frame::after { content: ""; position: absolute; inset: 50% 0 0; background: linear-gradient(0deg, rgba(2,4,2,.9), transparent); }
.image-frame figcaption, .factory-gallery figcaption { position: absolute; z-index: 2; left: 28px; right: 28px; bottom: 24px; display: flex; justify-content: space-between; gap: 24px; }
.image-frame figcaption b, .factory-gallery figcaption b { font-size: 17px; }
.image-frame figcaption span, .factory-gallery figcaption span { color: rgba(255,255,255,.64); font-size: 11px; }

.section-head-row { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(280px, .7fr); gap: 80px; align-items: end; margin-bottom: 58px; }
.products .section-index, .factory .section-index { color: #4c861a; }
.products .section-heading h2, .factory .section-heading h2 { color: var(--ink); }
.section-head-row > p { margin: 0; color: color-mix(in srgb, currentColor 62%, transparent); font-size: 17px; line-height: 1.66; }
.product-grid { display: grid; grid-template-columns: 1.45fr .55fr; grid-template-rows: 650px 390px; gap: 14px; }
.visual-card { position: relative; overflow: hidden; background: #dce2dc; }
.visual-card-large { grid-row: 1; }
.visual-card-wide { grid-column: 1 / -1; }
.visual-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s ease; }
.visual-card:hover img { transform: scale(1.025); }
.visual-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(2,4,2,.9), transparent 58%); }
.visual-card > div { position: absolute; z-index: 2; left: 30px; right: 30px; bottom: 28px; color: #fff; }
.visual-card span { color: var(--accent); font-size: 10px; font-weight: 900; letter-spacing: .14em; }
.visual-card h3 { max-width: 760px; margin: 11px 0 0; font-size: clamp(25px, 3.3vw, 48px); line-height: 1.03; letter-spacing: -.04em; }
.visual-card p { margin: 12px 0 0; color: rgba(255,255,255,.62); font-size: 12px; }

.applications .section-head-row { color: var(--text); }
.application-grid { display: grid; grid-template-columns: repeat(12, 1fr); grid-auto-rows: 430px; gap: 14px; }
.application-grid article { position: relative; overflow: hidden; background: var(--surface); }
.application-grid article:nth-child(1), .application-grid article:nth-child(4) { grid-column: span 7; }
.application-grid article:nth-child(2), .application-grid article:nth-child(3) { grid-column: span 5; }
.application-grid img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s ease; }
.application-grid article:hover img { transform: scale(1.025); }
.application-grid article::after { content: ""; position: absolute; inset: 0; background: linear-gradient(0deg, rgba(2,4,2,.9), transparent 62%); }
.application-grid article > div { position: absolute; z-index: 2; left: 26px; right: 26px; bottom: 24px; }
.application-grid span { color: var(--accent); font-size: 10px; font-weight: 900; letter-spacing: .14em; }
.application-grid h3 { margin: 9px 0 0; font-size: clamp(28px, 3vw, 46px); letter-spacing: -.04em; }
.application-grid p { margin: 10px 0 0; color: rgba(255,255,255,.62); font-size: 12px; }

.proof { padding: 120px 0; background: var(--surface); border-block: 1px solid var(--line); }
.proof-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; }
.proof-copy > p:not(.section-index) { max-width: 680px; margin: 28px 0 0; color: var(--muted); font-size: 18px; line-height: 1.66; }
.proof-copy .proof-note { padding-left: 18px; color: #d5dcd5; border-left: 2px solid var(--accent); font-size: 14px; }
.metrics { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--line); }
.metrics article { min-height: 270px; padding: 30px; border-bottom: 1px solid var(--line); }
.metrics article + article { border-left: 1px solid var(--line); }
.metrics article span { color: var(--accent); font-size: 11px; font-weight: 900; letter-spacing: .15em; }
.metrics strong { display: block; margin-top: 40px; font-size: clamp(58px, 6vw, 92px); line-height: .9; letter-spacing: -.07em; }
.metrics small { color: var(--muted); }
.metrics > div { grid-column: 1 / -1; min-height: 140px; display: grid; grid-template-columns: 1fr auto; align-content: center; gap: 12px; padding: 26px 30px; }
.metrics > div span { color: var(--muted); }
.metrics > div b { color: var(--accent); font-size: 28px; }
.metrics > div em { grid-column: 1 / -1; color: #747c75; font-size: 11px; font-style: normal; }

.factory-gallery { display: grid; grid-template-columns: 1.25fr .75fr; grid-template-rows: 430px 430px 330px; gap: 14px; }
.factory-gallery figure { position: relative; overflow: hidden; margin: 0; background: #dce2dc; }
.factory-gallery .gallery-main { grid-row: 1 / 3; }
.factory-gallery .gallery-wide { grid-column: 1 / -1; }
.factory-gallery img { width: 100%; height: 100%; object-fit: cover; }
.factory-gallery figure::after { content: ""; position: absolute; inset: 50% 0 0; background: linear-gradient(0deg, rgba(2,4,2,.85), transparent); }
.supply-story { display: none; }
.evidence-rail { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; margin-top: 14px; }
.evidence-rail figure { position: relative; min-height: 250px; margin: 0; overflow: hidden; background: #dce2dc; }
.evidence-rail img { width: 100%; height: 100%; object-fit: cover; }
.evidence-rail figure::after { content: ""; position: absolute; inset: 48% 0 0; background: linear-gradient(0deg, rgba(2,4,2,.82), transparent); }
.evidence-rail figcaption { position: absolute; z-index: 2; left: 18px; right: 18px; bottom: 16px; color: #fff; font-size: 12px; font-weight: 800; }
.capacity-note { margin-top: 18px; color: #667067; font-size: 11px; line-height: 1.55; }

.film-layout { display: grid; grid-template-columns: minmax(0, .62fr) minmax(560px, 1.38fr); gap: 80px; align-items: center; }
.film-copy p:last-child { color: var(--muted); font-size: 17px; line-height: 1.66; }
.company-film { margin: 0; overflow: hidden; background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow); }
.company-film video { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; background: #000; }
.company-film figcaption { display: flex; justify-content: space-between; gap: 24px; padding: 20px; border-top: 1px solid var(--line); }
.company-film figcaption span { color: var(--muted); font-size: 11px; text-align: right; }

.contact { position: relative; min-height: 900px; display: flex; align-items: center; overflow: hidden; }
.contact-media, .contact-shade { position: absolute; inset: 0; }
.contact-media img { width: 100%; height: 100%; object-fit: cover; }
.contact-shade { background: linear-gradient(90deg, rgba(2,4,2,.97), rgba(2,4,2,.78)); }
.contact-layout { position: relative; z-index: 2; display: grid; grid-template-columns: .85fr 1.15fr; gap: 90px; align-items: center; padding-block: 110px; }
.contact-copy > p:not(.section-index) { max-width: 650px; margin: 28px 0; color: rgba(255,255,255,.7); font-size: 18px; line-height: 1.62; }
.sales-email { display: grid; justify-items: start; gap: 8px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.2); }
.sales-email span { color: var(--accent); font-size: 10px; font-weight: 900; letter-spacing: .15em; }
.sales-email a { font-size: clamp(16px, 2vw, 22px); font-weight: 850; text-decoration: none; overflow-wrap: anywhere; }
.sales-email button { padding: 0 0 5px; color: rgba(255,255,255,.65); background: transparent; border: 0; border-bottom: 1px solid rgba(255,255,255,.35); cursor: pointer; font-size: 12px; }
.inquiry-form { display: grid; grid-template-columns: 1fr 1fr; gap: 19px; padding: clamp(28px, 4vw, 48px); color: var(--ink); background: rgba(248,250,247,.97); box-shadow: var(--shadow); }
.form-heading, .field-wide { grid-column: 1 / -1; }
.form-heading { display: flex; justify-content: space-between; gap: 20px; padding-bottom: 18px; border-bottom: 1px solid #c9d0ca; }
.form-heading span { color: #4c861a; font-size: 11px; font-weight: 900; letter-spacing: .14em; }
.form-heading b { color: #6e776f; font-size: 11px; }
.inquiry-form label { display: grid; gap: 8px; }
.inquiry-form label > span { color: #3e4740; font-size: 12px; font-weight: 800; }
.inquiry-form input, .inquiry-form textarea { width: 100%; padding: 13px 14px; color: var(--ink); background: #fff; border: 1px solid #c7cec8; border-radius: var(--radius); outline: none; resize: vertical; }
.inquiry-form input:focus, .inquiry-form textarea:focus { border-color: #5b9923; box-shadow: 0 0 0 3px rgba(147,234,60,.2); }
.form-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.form-note { margin: -3px 0 0; color: #747c75; font-size: 11px; line-height: 1.5; }
.form-feedback { min-height: 18px; color: #3f7215; font-size: 12px; font-weight: 800; }

.site-footer { padding: 66px 0 28px; background: var(--bg); color: var(--muted); border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1.35fr repeat(3, 1fr); gap: 44px; }
.footer-grid > div { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.footer-grid p { margin: 12px 0 0; color: color-mix(in srgb, var(--muted) 68%, transparent); font-size: 13px; }
.footer-grid > div > span { color: color-mix(in srgb, var(--muted) 70%, transparent); font-size: 10px; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
.footer-grid a:not(.brand) { font-size: 13px; text-decoration: none; overflow-wrap: anywhere; }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; margin-top: 56px; padding-top: 24px; color: color-mix(in srgb, var(--muted) 56%, transparent); font-size: 11px; border-top: 1px solid var(--line); }

/* Concept 01 — cinematic industrial flagship */
html[data-concept="flagship"] .hero-media img { object-position: 58% center; }
html[data-concept="flagship"] .company-image { clip-path: polygon(0 0, 96% 0, 100% 9%, 100% 100%, 0 100%); }
html[data-concept="flagship"] .application-grid article:nth-child(2) img { object-position: center; }

/* Concept 02 — bright precision engineering */
html[data-concept="precision"] {
  --bg: #f2f5f4;
  --surface: #e4e9e7;
  --surface-2: #d9e0dd;
  --paper: #ffffff;
  --ink: #0b1513;
  --text: #0b1513;
  --muted: #52625d;
  --line: rgba(11,21,19,.17);
  --line-light: rgba(11,21,19,.15);
  --accent: #00a56a;
  --accent-ink: #ffffff;
  --radius: 2px;
  color-scheme: light;
}
html[data-concept="precision"] body { background-image: linear-gradient(rgba(11,21,19,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(11,21,19,.035) 1px, transparent 1px); background-size: 48px 48px; }
html[data-concept="precision"] .concept-switcher { color: #fff; background: #0c1916; }
html[data-concept="precision"] .site-header { color: var(--ink); background: #ffffff; box-shadow: 0 8px 30px rgba(11,21,19,.08); }
html[data-concept="precision"] .site-header.is-scrolled { background: #ffffff; }
html[data-concept="precision"] .hero { min-height: 850px; background: #fff; }
html[data-concept="precision"] .hero-media { left: 51%; clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%); }
html[data-concept="precision"] .hero-media img { object-position: 58% center; }
html[data-concept="precision"] .hero-shade { left: 51%; background: linear-gradient(90deg, rgba(2,10,8,.48), rgba(2,10,8,.04)); clip-path: polygon(14% 0, 100% 0, 100% 100%, 0 100%); }
html[data-concept="precision"] .hero-layout { min-height: 850px; grid-template-columns: .98fr 1.02fr; align-items: center; padding-bottom: 40px; }
html[data-concept="precision"] .hero-copy { align-self: center; padding-right: 20px; }
html[data-concept="precision"] .hero h1 { font-size: clamp(54px, 6.2vw, 94px); line-height: .94; }
html[data-concept="precision"] .hero-lede { color: var(--muted); }
html[data-concept="precision"] .hero-proof { align-self: end; grid-column: 1 / -1; grid-template-columns: repeat(3, 1fr); color: #fff; background: #0c1916; border: 0; }
html[data-concept="precision"] .hero-proof article { min-height: 105px; padding-inline: 26px; border: 0; border-left: 1px solid rgba(255,255,255,.16); }
html[data-concept="precision"] .hero-proof article:first-child { border-left: 0; }
html[data-concept="precision"] .hero-proof span { color: rgba(255,255,255,.68); }
html[data-concept="precision"] .text-link { color: var(--ink); }
html[data-concept="precision"] .trust-strip { background: #0c1916; color: #fff; }
html[data-concept="precision"] .trust-grid span { border-color: rgba(255,255,255,.14); }
html[data-concept="precision"] .company, html[data-concept="precision"] .applications, html[data-concept="precision"] .film { color: var(--ink); background: transparent; }
html[data-concept="precision"] .company-grid { grid-template-columns: .7fr .7fr 1.1fr; gap: 52px; align-items: start; }
html[data-concept="precision"] .company-copy { align-self: start; padding-top: 3px; }
html[data-concept="precision"] .company-image { grid-column: 3; grid-row: 1; min-height: 560px; }
html[data-concept="precision"] .products, html[data-concept="precision"] .factory { background: #fff; }
html[data-concept="precision"] .section-heading h2, html[data-concept="precision"] .proof h2, html[data-concept="precision"] .film h2 { font-size: clamp(42px, 5vw, 72px); line-height: 1; }
html[data-concept="precision"] .product-grid { grid-template-columns: repeat(3, 1fr); grid-template-rows: 560px; }
html[data-concept="precision"] .visual-card-large, html[data-concept="precision"] .visual-card-wide { grid-column: auto; grid-row: auto; }
html[data-concept="precision"] .visual-card h3 { font-size: clamp(23px, 2.2vw, 34px); }
html[data-concept="precision"] .applications .section-head-row { color: var(--ink); }
html[data-concept="precision"] .application-grid { grid-template-columns: repeat(4, 1fr); grid-auto-rows: 520px; }
html[data-concept="precision"] .application-grid article:nth-child(n) { grid-column: span 1; }
html[data-concept="precision"] .application-grid h3 { font-size: clamp(26px, 2.4vw, 38px); }
html[data-concept="precision"] .proof { color: #fff; background: #0c1916; }
html[data-concept="precision"] .film-layout { grid-template-columns: .75fr 1.25fr; }
html[data-concept="precision"] .film-copy p:last-child { color: var(--muted); }
html[data-concept="precision"] .company-film { color: #fff; background: #0c1916; }
html[data-concept="precision"] .contact-copy { color: #fff; }
html[data-concept="precision"] .site-footer { color: #aebbb6; background: #0c1916; }

/* Concept 03 — editorial global materials brand */
html[data-concept="global"] {
  --bg: #0b1511;
  --surface: #14221c;
  --surface-2: #1a2b23;
  --paper: #eef2eb;
  --ink: #0a1711;
  --text: #f0f6ef;
  --muted: #a8b8ae;
  --line: rgba(220,240,226,.16);
  --accent: #b8f26a;
  --accent-ink: #122006;
  --radius: 18px;
  --max: 1320px;
  color-scheme: dark;
}
html[data-concept="global"] .concept-switcher { background: #0d1712; }
html[data-concept="global"] .site-header { width: min(var(--max), calc(100% - var(--gutter) * 2)); left: 50%; right: auto; transform: translateX(-50%); top: calc(var(--preview-height) + 18px); padding-inline: 24px; border: 1px solid var(--line); border-radius: 18px; background: rgba(11,21,17,.82); }
html[data-concept="global"] .site-header.is-scrolled { background: rgba(11,21,17,.96); }
html[data-concept="global"] .hero { min-height: 980px; padding: calc(var(--header-height) + var(--preview-height) + 60px) var(--gutter) 28px; }
html[data-concept="global"] .hero-media { inset: calc(var(--header-height) + var(--preview-height) + 60px) var(--gutter) 28px 44%; border-radius: 26px; overflow: hidden; }
html[data-concept="global"] .hero-media img { object-position: 60% center; }
html[data-concept="global"] .hero-shade { inset: calc(var(--header-height) + var(--preview-height) + 60px) var(--gutter) 28px 44%; border-radius: 26px; background: linear-gradient(90deg, rgba(8,18,13,.58), rgba(8,18,13,.04)); }
html[data-concept="global"] .hero-layout { width: min(var(--max), 100%); min-height: calc(980px - var(--header-height) - var(--preview-height) - 88px); grid-template-columns: minmax(0, .9fr) minmax(360px, .6fr); align-items: center; padding: 0; }
html[data-concept="global"] .hero-copy { position: relative; z-index: 3; max-width: 780px; padding: 60px 70px 60px 0; }
html[data-concept="global"] .hero h1 { font-family: Georgia, "Times New Roman", "Songti SC", serif; font-size: clamp(56px, 6.5vw, 100px); font-weight: 500; line-height: .94; letter-spacing: -.055em; }
html[data-concept="global"] .hero-lede { max-width: 590px; }
html[data-concept="global"] .hero-proof { position: absolute; z-index: 4; right: 32px; bottom: 58px; width: min(680px, 50%); grid-template-columns: repeat(3, 1fr); padding: 0 20px; background: rgba(9,18,13,.84); border: 1px solid var(--line); border-radius: 18px; backdrop-filter: blur(18px); }
html[data-concept="global"] .hero-proof article { min-height: 112px; padding-inline: 18px; border: 0; border-left: 1px solid var(--line); }
html[data-concept="global"] .hero-proof article:first-child { border-left: 0; }
html[data-concept="global"] .trust-strip { color: var(--text); background: var(--surface); }
html[data-concept="global"] .trust-grid { gap: 12px; padding-block: 14px; }
html[data-concept="global"] .trust-grid span { min-height: 58px; padding-inline: 18px; background: rgba(255,255,255,.035); border: 1px solid var(--line); border-radius: 14px; }
html[data-concept="global"] .section-heading h2, html[data-concept="global"] .proof h2, html[data-concept="global"] .film h2, html[data-concept="global"] .contact h2 { font-family: Georgia, "Times New Roman", "Songti SC", serif; font-weight: 500; }
html[data-concept="global"] .company-grid { grid-template-columns: .9fr .55fr; gap: 60px; }
html[data-concept="global"] .company-image { min-height: 720px; border-radius: 26px; }
html[data-concept="global"] .company-image img { object-position: 68% center; }
html[data-concept="global"] .products, html[data-concept="global"] .factory { background: var(--paper); }
html[data-concept="global"] .product-grid { grid-template-columns: 1fr 1fr; grid-template-rows: 620px 470px; gap: 18px; }
html[data-concept="global"] .visual-card { border-radius: 22px; }
html[data-concept="global"] .visual-card-large { grid-row: 1 / 3; }
html[data-concept="global"] .visual-card-wide { grid-column: 2; }
html[data-concept="global"] .application-grid { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 570px; gap: 18px; }
html[data-concept="global"] .application-grid article:nth-child(n) { grid-column: span 1; border-radius: 22px; }
html[data-concept="global"] .proof { background: #101d17; }
html[data-concept="global"] .proof-layout { grid-template-columns: .85fr 1.15fr; }
html[data-concept="global"] .metrics { gap: 12px; padding: 12px; border: 0; }
html[data-concept="global"] .metrics article, html[data-concept="global"] .metrics > div { border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.025); }
html[data-concept="global"] .metrics article + article { border-left: 1px solid var(--line); }
html[data-concept="global"] .factory-gallery { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); grid-template-rows: 440px 440px minmax(560px, auto); gap: 18px; }
html[data-concept="global"] .factory-gallery figure { min-width: 0; min-height: 0; border-radius: 22px; }
html[data-concept="global"] .factory-gallery img { position: absolute; inset: 0; }
html[data-concept="global"] .evidence-rail figure { border-radius: 16px; }
html[data-concept="global"] .factory-gallery .gallery-main { grid-row: 1 / 3; }
html[data-concept="global"] .factory-gallery .gallery-wide { grid-column: 2; grid-row: 3; }
html[data-concept="global"] .factory-gallery figcaption b { color: #fff; }
html[data-concept="global"] .supply-story { grid-column: 1; grid-row: 3; display: flex; flex-direction: column; justify-content: center; padding: clamp(28px, 3.4vw, 52px); color: #eef4ed; background: #10281f; border-radius: 22px; }
.supply-eyebrow { margin: 0; color: #baf174; font-size: 12px; font-weight: 750; letter-spacing: .12em; line-height: 1.6; }
.supply-story h3 { margin: 22px 0; font-family: Georgia, "Times New Roman", "Songti SC", serif; font-size: clamp(34px, 3.2vw, 48px); font-weight: 500; line-height: 1.16; letter-spacing: -.035em; text-wrap: balance; }
.supply-description { margin: 0; color: #bfcfc4; font-size: 16px; line-height: 1.8; }
.supply-details { margin: 28px 0 0; }
.supply-details > div { display: grid; grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr); gap: 16px; padding: 14px 0; border-top: 1px solid #ffffff26; font-size: 14px; line-height: 1.6; }
.supply-details dt { color: #e8f2e6; }
.supply-details dd { margin: 0; color: #bfcfc4; }
html[data-concept="global"] .film-layout { grid-template-columns: .7fr 1.3fr; }
html[data-concept="global"] .company-film, html[data-concept="global"] .inquiry-form { border-radius: 22px; }
html[data-concept="global"] .contact-media { inset: 28px; border-radius: 26px; overflow: hidden; }
html[data-concept="global"] .contact-shade { inset: 28px; border-radius: 26px; }

@media (max-width: 1120px) {
  .concept-switcher > span { display: none; }
  .concept-switcher { justify-content: center; padding-inline: 0; }
  .concept-switcher button { min-width: 0; }
  .site-nav { display: none; position: fixed; left: 0; right: 0; top: calc(var(--preview-height) + var(--header-height)); flex-direction: column; align-items: stretch; gap: 0; padding: 18px var(--gutter) 28px; background: color-mix(in srgb, var(--bg) 96%, transparent); border-bottom: 1px solid var(--line); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 15px 0; border-bottom: 1px solid var(--line); }
  .site-nav .nav-cta { justify-content: center; margin-top: 12px; padding-inline: 18px; border: 0; }
  .menu-toggle { display: block; }
  .hero-layout, .proof-layout, .contact-layout { grid-template-columns: 1fr; }
  .hero-proof { grid-template-columns: repeat(3, 1fr); }
  .hero-proof article { padding-inline: 22px; border-left: 1px solid var(--line); }
  .hero-proof article:first-child { border-left: 0; }
  .company-grid { grid-template-columns: 1fr; gap: 44px; }
  .company-copy { max-width: 780px; }
  .section-head-row { grid-template-columns: 1fr; gap: 28px; }
  .film-layout { grid-template-columns: 1fr; }
  .film-copy { max-width: 820px; }
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-grid > div:last-child { grid-column: 2; }
  html[data-concept="precision"] .hero-layout { grid-template-columns: 1fr; }
  html[data-concept="precision"] .hero-copy { max-width: 64%; }
  html[data-concept="precision"] .company-grid { grid-template-columns: 1fr 1fr; }
  html[data-concept="precision"] .company-image { grid-column: 1 / -1; grid-row: auto; }
  html[data-concept="precision"] .product-grid { grid-template-columns: 1fr 1fr; grid-template-rows: 560px 430px; }
  html[data-concept="precision"] .visual-card-wide { grid-column: 1 / -1; }
  html[data-concept="precision"] .application-grid { grid-template-columns: 1fr 1fr; }
  html[data-concept="global"] .hero-layout { grid-template-columns: 1fr; }
  html[data-concept="global"] .hero-copy { max-width: 64%; }
  html[data-concept="global"] .hero-proof { width: 58%; }
}

@media (max-width: 720px) {
  :root { --gutter: 20px; --header-height: 64px; --preview-height: 52px; }
  .concept-switcher { justify-content: stretch; }
  .concept-switcher > div { width: 100%; }
  .concept-switcher button { width: 33.333%; min-width: 0; justify-content: center; padding-inline: 8px; }
  .concept-switcher button span { display: none; }
  .concept-switcher button::after { font-size: 11px; font-weight: 800; white-space: nowrap; }
  .concept-switcher button:nth-child(1)::after { content: "旗舰工业"; }
  .concept-switcher button:nth-child(2)::after { content: "精密工程"; }
  .concept-switcher button:nth-child(3)::after { content: "国际品牌"; }
  .brand-type { display: none; }
  .language-toggle { min-width: 54px; padding-inline: 10px; }
  .hero, .hero-layout { min-height: 860px; }
  .hero-layout { width: calc(100% - var(--gutter) * 2); display: flex; flex-direction: column; align-items: stretch; justify-content: space-between; padding-top: 160px; padding-bottom: 28px; }
  .hero-copy { width: 340px; max-width: calc(100vw - 40px); }
  .hero h1 { width: 320px; max-width: calc(100vw - 40px); white-space: normal; font-size: clamp(36px, 10.2vw, 44px); line-height: .96; overflow-wrap: anywhere; }
  .hero-lede { width: 340px; max-width: calc(100vw - 40px); white-space: normal; font-size: 15px; overflow-wrap: anywhere; }
  .hero-actions { width: 340px; max-width: calc(100vw - 40px); align-items: stretch; flex-direction: column; gap: 18px; }
  .hero-actions .button { width: calc(100vw - 40px); max-width: calc(100vw - 40px); }
  .hero-actions .text-link { width: max-content; max-width: 100%; }
  .hero-proof { width: 100%; }
  .hero-proof { grid-template-columns: 1fr; }
  .hero-proof article { min-height: 76px; grid-template-columns: 110px 1fr; align-items: center; padding: 10px 0; border-left: 0; border-top: 1px solid var(--line); }
  .hero-proof strong { font-size: 34px; }
  .hero-proof span { margin: 0; }
  .trust-grid { grid-template-columns: 1fr 1fr; padding-block: 12px; }
  .trust-grid span { min-height: 60px; padding: 10px 12px; border: 1px solid color-mix(in srgb, var(--accent-ink) 18%, transparent); }
  .company, .products, .applications, .proof, .factory, .film { padding-block: 76px; }
  .section-heading h2, .proof h2, .film h2, .contact h2 { font-size: clamp(40px, 12vw, 60px); }
  .company-copy p, .proof-copy > p:not(.section-index), .contact-copy > p:not(.section-index) { font-size: 16px; }
  .image-frame { min-height: 500px; }
  .product-grid { grid-template-columns: 1fr; grid-template-rows: repeat(3, 520px); }
  .visual-card-large, .visual-card-wide { grid-column: auto; grid-row: auto; }
  .application-grid { grid-template-columns: 1fr; grid-auto-rows: 520px; }
  .application-grid article:nth-child(n) { grid-column: 1; }
  .metrics { grid-template-columns: 1fr; }
  .metrics article { min-height: 210px; }
  .metrics article + article { border-left: 0; }
  .metrics > div { grid-column: 1; grid-template-columns: 1fr; }
  .metrics > div em { grid-column: 1; }
  .factory-gallery { grid-template-columns: 1fr; grid-template-rows: 560px 340px 340px 380px; }
  .factory-gallery .gallery-main, .factory-gallery .gallery-wide { grid-column: 1; grid-row: auto; }
  .evidence-rail { grid-template-columns: repeat(5, 78vw); overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 8px; }
  .evidence-rail figure { min-height: 360px; scroll-snap-align: start; }
  .company-film figcaption { flex-direction: column; }
  .company-film figcaption span { text-align: left; }
  .contact { min-height: 700px; }
  .contact-layout { gap: 44px; padding-block: 80px; }
  .inquiry-form { grid-template-columns: 1fr; }
  .form-heading, .field-wide { grid-column: 1; }
  .form-heading { flex-direction: column; align-items: flex-start; }
  .form-actions { flex-direction: column; }
  .form-actions .button { width: 100%; justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-grid > div:last-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }

  html[data-concept="precision"] .hero { min-height: 920px; }
  html[data-concept="precision"] .hero-media, html[data-concept="precision"] .hero-shade { inset: 60% 0 0; clip-path: none; }
  html[data-concept="precision"] .hero-layout { min-height: 920px; display: flex; padding-top: 150px; }
  html[data-concept="precision"] .hero-copy { max-width: 100%; padding: 0; }
  html[data-concept="precision"] .hero-proof { align-self: end; grid-template-columns: repeat(3, 1fr); }
  html[data-concept="precision"] .hero-proof article { min-height: 92px; display: block; padding: 18px 12px; border-left: 1px solid rgba(255,255,255,.15); }
  html[data-concept="precision"] .hero-proof strong { font-size: 28px; }
  html[data-concept="precision"] .hero-proof span { display: block; margin-top: 7px; font-size: 10px; }
  html[data-concept="precision"] .hero-actions .text-link { color: #ffffff; }
  html[data-concept="precision"] .company-grid { grid-template-columns: 1fr; }
  html[data-concept="precision"] .product-grid { grid-template-columns: 1fr; grid-template-rows: repeat(3, 520px); }
  html[data-concept="precision"] .visual-card-wide { grid-column: 1; }
  html[data-concept="precision"] .application-grid { grid-template-columns: 1fr; }

  html[data-concept="global"] .site-header { width: calc(100% - 24px); top: calc(var(--preview-height) + 10px); padding-inline: 14px; border-radius: 14px; }
  html[data-concept="global"] .site-nav { top: calc(var(--preview-height) + var(--header-height) + 10px); }
  html[data-concept="global"] .hero { min-height: 980px; padding: 0 var(--gutter) 20px; }
  html[data-concept="global"] .hero-media, html[data-concept="global"] .hero-shade { inset: 48% var(--gutter) 20px; border-radius: 18px; }
  html[data-concept="global"] .hero-layout { min-height: 980px; width: 100%; display: flex; justify-content: flex-start; padding-top: 170px; }
  html[data-concept="global"] .hero-copy { max-width: 100%; padding: 0; }
  html[data-concept="global"] .hero h1 { font-size: clamp(35px, 9.8vw, 42px); }
  html[data-concept="global"] .hero-proof { right: calc(var(--gutter) + 14px); bottom: 34px; width: calc(100% - var(--gutter) * 2 - 28px); grid-template-columns: repeat(3, 1fr); padding: 0 8px; }
  html[data-concept="global"] .hero-proof article { min-height: 88px; display: block; padding: 16px 8px; }
  html[data-concept="global"] .hero-proof strong { font-size: 27px; }
  html[data-concept="global"] .hero-proof span { display: block; margin-top: 7px; font-size: 9px; }
  html[data-concept="global"] .trust-grid { grid-template-columns: 1fr; }
  html[data-concept="global"] .company-grid { grid-template-columns: 1fr; }
  html[data-concept="global"] .company-image { min-height: 560px; }
  html[data-concept="global"] .company-image figcaption { flex-direction: column; gap: 10px; }
  html[data-concept="global"] .product-grid { grid-template-columns: 1fr; grid-template-rows: repeat(3, 520px); }
  html[data-concept="global"] .visual-card-large, html[data-concept="global"] .visual-card-wide { grid-column: 1; grid-row: auto; }
  html[data-concept="global"] .application-grid { grid-template-columns: 1fr; grid-auto-rows: 520px; }
  html[data-concept="global"] .proof-layout { grid-template-columns: 1fr; }
  html[data-concept="global"] .factory-gallery { grid-template-columns: minmax(0, 1fr); grid-template-rows: 560px 340px 340px auto 420px; }
  html[data-concept="global"] .factory-gallery .gallery-main, html[data-concept="global"] .factory-gallery .gallery-wide { grid-column: 1; grid-row: auto; }
  html[data-concept="global"] .supply-story { grid-column: 1; grid-row: auto; padding: 30px 24px; }
  .supply-details > div { grid-template-columns: 1fr; gap: 4px; }
  html[data-concept="global"] .film-layout { grid-template-columns: 1fr; }
  html[data-concept="global"] .contact-media, html[data-concept="global"] .contact-shade { inset: 16px; }
}

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

/* 正式站：固定国际品牌版，隐藏选版工具占位。 */
:root { --preview-height: 0px; }