:root {
  --ink: #152536;
  --muted: #647487;
  --line: #dce5ec;
  --paper: #f5f8fa;
  --white: #ffffff;
  --blue: #1264ac;
  --blue-dark: #0d4b84;
  --blue-light: #4da7d1;
  --radius: 4px;
  --shadow: 0 18px 42px rgba(21, 37, 54, .1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif; line-height: 1.65; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { display: block; max-width: 100%; }
.container { width: min(1180px, calc(100% - 48px)); margin: 0 auto; }
.section-pad { padding: 104px 0; }
main > section.section-pad { border-top: 1px solid var(--line); }
main > section#company, main > section.contact { border-top: 0; }
.eyebrow { margin: 0 0 18px; color: rgba(255,255,255,.76); font-size: 11px; font-weight: 700; letter-spacing: .12em; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.1; letter-spacing: 0; }
h1 { margin-bottom: 22px; font-size: clamp(44px, 5.3vw, 68px); font-weight: 600; }
h2 { margin-bottom: 22px; font-size: clamp(34px, 4vw, 54px); font-weight: 600; }
h3 { margin-bottom: 10px; font-size: 21px; }
.hero-accent, .contact h2 span { color: var(--blue-light); }

.site-header { position: absolute; z-index: 10; top: 0; width: 100%; border-bottom: 1px solid var(--line); background: var(--white); color: var(--ink); }
.header-inner { width: min(1240px, calc(100% - 48px)); min-height: 78px; margin: 0 auto; display: flex; align-items: center; gap: 30px; }
.brand { width: 225px; flex: 0 0 auto; filter: none; }
.brand img { width: 100%; height: auto; }
.site-nav { display: flex; align-items: center; justify-content: center; gap: 28px; flex: 1; font-size: 14px; }
.site-nav a { position: relative; padding: 27px 0; color: var(--muted); }
.site-nav a::after { position: absolute; right: 0; bottom: 19px; left: 0; height: 2px; background: var(--blue); content: ""; opacity: 0; transform: scaleX(.4); transition: opacity .2s, transform .2s; }
.site-nav a:hover, .site-nav a.active { color: var(--ink); }
.site-nav a:hover::after, .site-nav a.active::after { opacity: 1; transform: scaleX(1); }
.button span, .card-link span { margin-left: 8px; }
.menu-toggle { display: none; color: var(--ink); border: 1px solid var(--line); background: transparent; padding: 8px 11px; border-radius: var(--radius); }
.lang-switch { display: flex; align-items: center; gap: 6px; flex: 0 0 auto; font-size: 13px; font-weight: 700; white-space: nowrap; }
.lang-switch a { color: var(--muted); }
.lang-switch a:hover { color: var(--ink); }
.lang-switch a.active { color: var(--ink); }
.lang-switch span { color: var(--line); }

.hero { position: relative; padding: 168px 0 96px; background: linear-gradient(180deg, #fbfdff 0%, #f3f8fc 100%); text-align: center; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(18,100,172,.05) 1px, transparent 1px), linear-gradient(90deg, rgba(18,100,172,.05) 1px, transparent 1px); background-size: 64px 64px; -webkit-mask-image: radial-gradient(ellipse 76% 66% at 50% 44%, #000 26%, transparent 76%); mask-image: radial-gradient(ellipse 76% 66% at 50% 44%, #000 26%, transparent 76%); }
.bearing-mesh { position: absolute; top: 50%; left: 50%; width: min(1600px, 126%); height: auto; transform: translate(-50%, -50%); }
.bm-ticks { stroke: rgba(18,100,172,.15); }
.bm-tick { stroke-width: .8; }
.bm-tick-major { stroke-width: 1.35; stroke: rgba(18,100,172,.26); }
.bm-outer { fill: none; stroke: rgba(18,100,172,.32); stroke-width: 1.5; }
.bm-outer-inner { fill: none; stroke: rgba(18,100,172,.10); stroke-width: .8; }
.bm-inner-ring { fill: none; stroke: rgba(18,100,172,.28); stroke-width: 1.3; }
.bm-inner-inner { fill: none; stroke: rgba(18,100,172,.14); stroke-width: .8; }
.bm-ball { fill: none; stroke: rgba(18,100,172,.45); stroke-width: 1.4; }
.bm-node { fill: #4da7d1; opacity: .34; }
.bm-veil { pointer-events: none; }
@media (max-width: 760px) {
  .bearing-mesh { width: min(1600px, 178%); opacity: .72; }
  .bm-ball { opacity: .8; }
}
.hero-content { position: relative; z-index: 1; padding-top: 0; color: var(--ink); }
.hero-since { margin: 0 0 18px; color: var(--blue); font-size: 16px; font-weight: 600; letter-spacing: .01em; }
.hero-logo { width: min(420px, 80%); margin: 0 auto 16px; }
.hero-content h1 { margin-bottom: 18px; font-size: clamp(30px, 3.6vw, 46px); font-weight: 600; letter-spacing: .02em; color: var(--ink); }
.hero-copy { max-width: 720px; margin: 0 auto 22px; color: var(--muted); font-size: 16px; }
.hero-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; margin: 0 0 34px; }
.badge { display: inline-flex; align-items: center; padding: 7px 15px; border: 1px solid var(--line); border-radius: 999px; background: var(--white); color: var(--ink); font-size: 12px; font-weight: 700; letter-spacing: .06em; box-shadow: 0 1px 2px rgba(21,37,54,.04); }
.hero-actions { display: flex; align-items: center; justify-content: center; gap: 14px; margin-bottom: 0; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 19px; border-radius: var(--radius); font-size: 14px; font-weight: 700; transition: transform .2s, background .2s, color .2s; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--blue); color: var(--white); }
.button-primary:hover { background: var(--blue-dark); }
.button-quiet { color: var(--blue); border-bottom: 1px solid var(--blue); border-radius: 0; padding-right: 2px; padding-left: 2px; }

.overview-strip { background: var(--blue-dark); color: var(--white); }
.overview-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.overview-grid > div { display: grid; gap: 4px; padding: 24px 28px; border-right: 1px solid rgba(255,255,255,.16); }
.overview-grid > div:first-child { border-left: 1px solid rgba(255,255,255,.16); }
.overview-grid strong { font-size: 16px; font-weight: 700; }
.overview-grid span { color: rgba(255,255,255,.66); font-size: 13px; }

.button-light { background: var(--white); color: var(--blue-dark); }
.button-light:hover { background: #dceff8; }

.intro { background: var(--paper); }
.intro-inner { max-width: 780px; }
.intro-inner h2 { margin-bottom: 25px; }
.intro-copy { max-width: 620px; color: var(--muted); font-size: 17px; }
.global-map { padding: 96px 0 64px; background: var(--white); color: var(--ink); }
.global-heading { margin-bottom: 30px; text-align: center; }
.global-heading p { max-width: 660px; margin: 14px auto 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
.global-map h2 { margin-bottom: 0; color: var(--ink); }
.map-wrap { margin-top: 8px; }
.world-map { display: block; width: 100%; height: auto; }
.map-ocean { }
.map-graticule { fill: none; stroke: rgba(28,32,136,.07); stroke-width: .5; }
.map-countries { fill: #eaf0f9; }
.map-cust { fill: #9dc0e8; }
.map-borders { fill: none; stroke: #fff; stroke-width: .5; }
.map-routes path { fill: none; stroke: #1c2088; stroke-width: .7; opacity: .3; stroke-dasharray: 3 5; animation: map-dash-flow 2.6s linear infinite; }
@keyframes map-dash-flow { to { stroke-dashoffset: -16; } }
.map-arrow { fill: #1c2088; opacity: .72; }
.map-dots circle { fill: #1c2088; transform-box: fill-box; transform-origin: center; animation: map-dot-blink 2.4s ease-in-out infinite; }
.map-dots circle:nth-child(3n+2) { animation-delay: .8s; }
.map-dots circle:nth-child(3n) { animation-delay: 1.6s; }
@keyframes map-dot-blink { 0%, 100% { opacity: .4; transform: scale(.78); } 50% { opacity: 1; transform: scale(1.28); } }
@media (prefers-reduced-motion: reduce) {
  .map-dots circle, .map-routes path { animation: none; }
  .map-arrows { display: none; }
}
.origin-core { fill: #1c2088; }
.origin-pulse { fill: none; stroke: #1c2088; stroke-width: 1.4; transform-box: fill-box; transform-origin: center; animation: origin-pulse 2.8s ease-out infinite; }
@keyframes origin-pulse { 0% { transform: scale(.5); opacity: .55; } 100% { transform: scale(2.8); opacity: 0; } }
.company { background: var(--white); }
.company-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: end; }
.section-kicker { margin-bottom: 15px; color: var(--blue); font-size: 11px; font-weight: 800; letter-spacing: .12em; }
.company-copy { max-width: 570px; color: var(--muted); font-size: 16px; }
.company-copy p { margin-bottom: 17px; }
.company-copy p:last-of-type { margin-bottom: 22px; font-size: 13px; }
.company-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; margin: 25px 0 23px; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.company-facts > div { min-height: 84px; padding: 15px 14px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.company-facts strong { display: block; color: var(--blue); font-size: 22px; line-height: 1.15; }
.company-facts span { display: block; margin-top: 5px; color: var(--muted); font-size: 11px; line-height: 1.35; }
.company-copy .text-link { margin-top: 0; }
.text-link { display: inline-flex; align-items: center; margin-top: 12px; color: var(--blue); font-size: 14px; font-weight: 700; border-bottom: 1px solid var(--blue); }
.text-link span { margin-left: 10px; }
.factory-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 60px; }
.gallery-item { margin: 0; }
.gallery-item img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: var(--radius); cursor: pointer; transition: transform .4s ease; }
.gallery-item:hover img { transform: scale(1.04); }
.lightbox { width: min(1080px, calc(100% - 32px)); max-height: calc(100dvh - 32px); padding: 0; border: 0; background: transparent; overflow: visible; }
.lightbox::backdrop { background: rgba(7, 25, 40, .85); }
.lightbox img { display: block; width: 100%; max-height: calc(100dvh - 32px); object-fit: contain; border-radius: var(--radius); }
.lightbox-close { position: fixed; z-index: 2; top: 16px; right: 16px; width: 42px; height: 42px; border: 0; border-radius: 50%; background: rgba(255,255,255,.92); color: var(--ink); cursor: pointer; font-size: 24px; line-height: 1; }
.back-to-top { position: fixed; z-index: 20; right: 24px; bottom: 24px; width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; border: 0; border-radius: 50%; background: var(--blue-dark); color: var(--white); font-size: 20px; line-height: 1; cursor: pointer; box-shadow: 0 10px 26px rgba(10, 27, 44, .3); opacity: 0; visibility: hidden; transform: translateY(12px); transition: opacity .3s ease, transform .3s ease, visibility .3s ease, background .2s ease; }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--blue); }

.section-heading { display: block; max-width: 760px; margin-bottom: 38px; }
.section-heading h2 { margin-bottom: 15px; }
.section-heading > p { width: auto; max-width: 620px; margin-bottom: 0; color: var(--muted); font-size: 15px; }
.section-heading.compact { margin-bottom: 34px; }
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.filter { padding: 10px 17px; color: var(--muted); border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); cursor: pointer; font-size: 13px; }
.filter:hover, .filter.active { border-color: var(--blue); background: var(--blue); color: var(--white); }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.product-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); transition: box-shadow .25s, transform .25s; }
.product-card:hover { box-shadow: var(--shadow); transform: translateY(-5px); }
.product-card.is-hidden { display: none; }
.product-media { position: relative; aspect-ratio: 1 / .82; overflow: hidden; background: #eef3f6; }
.product-media img { width: 100%; height: 100%; object-fit: cover; mix-blend-mode: multiply; transition: transform .35s; }
.product-card:hover .product-media img { transform: scale(1.04); }
.product-media span { position: absolute; top: 12px; right: 12px; width: 28px; height: 28px; display: grid; place-items: center; border-radius: 50%; background: rgba(255,255,255,.86); color: var(--blue); font-size: 11px; font-weight: 700; }
.product-body { padding: 23px 22px 25px; }
.card-kicker { margin-bottom: 8px; color: var(--blue); font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.product-body h3 { margin-bottom: 8px; font-size: 20px; }
.product-body p:not(.card-kicker) { min-height: 48px; margin-bottom: 14px; color: var(--muted); font-size: 13px; }
.product-meta { display: flex; flex-wrap: wrap; gap: 6px; min-height: 25px; margin-bottom: 17px; }
.product-meta span, .dialog-meta span { display: inline-flex; align-items: center; padding: 3px 8px; border: 1px solid var(--line); border-radius: 2px; color: var(--muted); font-size: 11px; line-height: 1.4; }
.card-link { padding: 0; border: 0; background: transparent; color: var(--blue); cursor: pointer; font-size: 13px; font-weight: 700; }

.factory { background: var(--paper); }
.factory-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center; }
.factory-visual { position: relative; min-height: 600px; }
.factory-photo { height: 500px; overflow: hidden; border-radius: var(--radius); background: #dfeaf0; }
.factory-photo img { width: 100%; height: 100%; object-fit: contain; }
.asset-note { margin: 9px 0 0; color: var(--muted); font-size: 11px; }
.stat-panel { position: absolute; right: -28px; bottom: 48px; display: flex; gap: 16px; align-items: center; padding: 21px 23px; background: var(--blue-dark); color: var(--white); box-shadow: var(--shadow); border-radius: var(--radius); }
.stat-panel strong { font-size: 26px; font-weight: 700; }
.stat-panel span { color: rgba(255,255,255,.8); font-size: 13px; line-height: 1.5; }
.factory-copy .lead { max-width: 500px; margin-bottom: 32px; color: var(--muted); font-size: 16px; }
.capability-list { margin-bottom: 28px; }
.capability-list > div { display: grid; grid-template-columns: 45px 1fr; gap: 16px; padding: 16px 0; border-top: 1px solid var(--line); }
.capability-number { color: var(--blue); font-size: 12px; font-weight: 700; }
.capability-list h3 { margin-bottom: 5px; font-size: 17px; }
.capability-list p { margin-bottom: 0; color: var(--muted); font-size: 13px; }

.process { background: var(--white); }
.engineering { background: var(--paper); }
.engineering-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.engineering-item { min-height: 220px; padding: 26px 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.engineering-number { display: block; margin-bottom: 42px; color: var(--blue); font-size: 12px; font-weight: 800; }
.engineering-item h3 { margin-bottom: 12px; font-size: 19px; }
.engineering-item p { margin-bottom: 0; color: var(--muted); font-size: 13px; }
.engineering-footer { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding-top: 28px; }
.engineering-footer p { max-width: 620px; margin-bottom: 0; color: var(--muted); font-size: 13px; }
.process { background: var(--white); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.process-item { min-height: 205px; padding: 26px 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.process-item span { display: block; margin-bottom: 38px; color: var(--blue); font-size: 12px; font-weight: 800; }
.process-item h3 { font-size: 19px; }
.process-item p { margin-bottom: 0; color: var(--muted); font-size: 13px; }

.contact { background: var(--blue-dark); color: var(--white); }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center; }
.contact h2 { margin-bottom: 22px; }
.contact > .container > div:first-child > p:last-child { max-width: 430px; margin-bottom: 0; color: rgba(255,255,255,.72); font-size: 16px; }
.contact-card { padding: 28px; border: 1px solid rgba(255,255,255,.22); border-radius: var(--radius); }
.inquiry-form { display: grid; gap: 16px; }
.form-field { display: grid; gap: 7px; }
.form-field label { color: rgba(255,255,255,.78); font-size: 12px; font-weight: 700; }
.form-field label span { color: var(--blue-light); }
.form-field input, .form-field textarea { width: 100%; border: 1px solid rgba(255,255,255,.24); border-radius: 2px; background: rgba(255,255,255,.08); color: var(--white); font: inherit; font-size: 13px; outline: 0; }
.form-field input { min-height: 43px; padding: 10px 12px; }
.form-field textarea { min-height: 86px; padding: 10px 12px; resize: vertical; }
.form-field input::placeholder, .form-field textarea::placeholder { color: rgba(255,255,255,.42); }
.form-field input:focus, .form-field textarea:focus { border-color: var(--blue-light); box-shadow: 0 0 0 2px rgba(77,167,209,.22); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 16px; padding-top: 5px; }
.inquiry-form .button { margin-top: 0; border: 0; cursor: pointer; }
.contact-phone { color: rgba(255,255,255,.78); font-size: 13px; font-weight: 700; border-bottom: 1px solid rgba(255,255,255,.4); }
.contact-phone:hover { color: var(--white); }
.form-status { min-height: 1.4em; margin: 0; color: rgba(255,255,255,.7); font-size: 11px; line-height: 1.45; }
.contact-row { display: flex; justify-content: space-between; gap: 20px; padding: 17px 0; border-bottom: 1px solid rgba(255,255,255,.18); }
.contact-row span { color: rgba(255,255,255,.58); font-size: 13px; }
.contact-row strong, .contact-row a { color: var(--white); font-size: 14px; text-align: right; }
.contact-card .button { margin-top: 25px; }

.site-footer { padding: 62px 0 23px; background: #0b2238; color: var(--white); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 60px; padding-bottom: 55px; }
.footer-grid img { width: 230px; margin-bottom: 20px; filter: brightness(0) invert(1); }
.footer-grid p { color: rgba(255,255,255,.58); font-size: 13px; }
.footer-label { margin-bottom: 17px; color: var(--white) !important; font-size: 11px !important; font-weight: 700; letter-spacing: .12em; }
.footer-grid a { display: block; width: fit-content; margin-bottom: 9px; color: rgba(255,255,255,.62); font-size: 13px; }
.footer-grid a:hover { color: var(--white); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 17px; border-top: 1px solid rgba(255,255,255,.16); color: rgba(255,255,255,.4); font-size: 11px; }

.product-dialog { width: min(720px, calc(100% - 32px)); max-height: calc(100dvh - 32px); overflow: auto; padding: 0; border: 0; border-radius: var(--radius); box-shadow: 0 22px 70px rgba(10, 27, 44, .28); }
.product-dialog::backdrop { background: rgba(7, 25, 40, .65); }
.dialog-close { position: absolute; z-index: 2; top: 14px; right: 16px; width: 32px; height: 32px; border: 0; border-radius: 50%; background: rgba(255,255,255,.9); color: var(--ink); cursor: pointer; font-size: 22px; line-height: 1; }
.dialog-media { height: 280px; background: #edf2f5; }
.dialog-media img { width: 100%; height: 100%; object-fit: cover; mix-blend-mode: multiply; }
.dialog-media img[hidden] { display: none; }
.dialog-content { padding: 35px; }
.dialog-kicker { margin-bottom: 10px; color: var(--blue); font-size: 10px; font-weight: 800; letter-spacing: .12em; }
.dialog-content h2 { margin-bottom: 14px; font-size: 36px; }
.dialog-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 20px; }
.dialog-summary { min-height: 50px; margin-bottom: 12px; color: var(--muted); }
.dialog-specs { margin: 24px 0; padding-top: 20px; border-top: 1px solid var(--line); }
.spec-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; margin-bottom: 12px; }
.spec-heading p { margin: 0; color: var(--ink); font-size: 14px; font-weight: 800; }
.spec-heading span { color: var(--muted); font-size: 11px; }
.spec-facts { display: grid; gap: 7px; margin: 0 0 18px; padding: 0; list-style: none; color: var(--muted); font-size: 12px; line-height: 1.5; }
.spec-facts li { position: relative; padding-left: 13px; }
.spec-facts li::before { position: absolute; top: .55em; left: 0; width: 5px; height: 5px; border-radius: 50%; background: var(--blue); content: ''; }
.spec-group { margin-top: 22px; }
.spec-group h3 { margin-bottom: 10px; color: var(--ink); font-size: 15px; }
.spec-table-wrap { overflow-x: auto; border: 1px solid var(--line); }
.spec-table { width: 100%; min-width: 620px; border-collapse: collapse; color: var(--muted); font-size: 11px; white-space: nowrap; }
.spec-table th { color: var(--ink); background: #f1f5f7; font-weight: 800; }
.spec-table th, .spec-table td { padding: 8px 9px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); text-align: right; }
.spec-table th:first-child, .spec-table td:first-child { text-align: left; }
.spec-table tr:last-child td { border-bottom: 0; }
.spec-table th:last-child, .spec-table td:last-child { border-right: 0; }
.spec-note { margin: 15px 0 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.dialog-note { margin-bottom: 24px; color: var(--muted); font-size: 13px; }
.dialog-contact { margin-top: 2px; }
.dialog-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; }
.dialog-detail-link { color: var(--blue); border-bottom: 1px solid var(--blue); font-size: 13px; font-weight: 700; }
.dialog-detail-link span { margin-left: 8px; }

a:focus-visible, button:focus-visible { outline: 3px solid rgba(77,167,209,.8); outline-offset: 4px; }
button:active, .button:active { transform: translateY(1px); }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

@media (max-width: 900px) {
  .header-inner { gap: 18px; }
  .brand { width: 195px; }
  .site-nav { gap: 15px; }
  .overview-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .factory-gallery { grid-template-columns: repeat(2, 1fr); }
  .factory-grid, .contact-grid { gap: 55px; }
  .factory-visual { min-height: 500px; }
  .factory-photo { height: 420px; }
}

@media (max-width: 820px) {
  .site-header { background: var(--white); }
  .header-inner { min-height: 70px; justify-content: flex-start; }
  .brand { width: 190px; }
  .menu-toggle { display: block; order: 3; }
  .lang-switch { order: 2; margin-left: auto; }
  .site-nav { position: absolute; top: 70px; right: 16px; left: 16px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 18px; background: var(--blue-dark); box-shadow: var(--shadow); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 0; color: var(--white); }
  .site-nav a::after { display: none; }
  .map-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .world-map { min-width: 700px; }
}

@media (max-width: 680px) {
  .container, .header-inner { width: min(100% - 32px, 1180px); }
  .section-pad { padding: 74px 0; }
  .site-header { background: var(--white); }
  .header-inner { min-height: 70px; justify-content: flex-start; }
  .brand { width: 190px; }
  .menu-toggle { display: block; order: 3; }
  .lang-switch { order: 2; margin-left: auto; }
  .site-nav { position: absolute; top: 70px; right: 16px; left: 16px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 18px; background: var(--blue-dark); box-shadow: var(--shadow); }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 0; color: var(--white); }
  .site-nav a::after { display: none; }
  .hero { padding: 120px 0 64px; }
  .hero-logo { width: min(300px, 76%); }
  h1 { font-size: 30px; }
  .hero-copy { max-width: none; font-size: 15px; }
  .hero-actions { margin-bottom: 0; flex-wrap: wrap; }
  .overview-grid { grid-template-columns: 1fr; }
  .overview-grid > div, .overview-grid > div:first-child { border-left: 0; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.16); }
  .overview-grid > div:last-child { border-bottom: 0; }
  .intro-inner, .company-grid, .factory-grid, .contact-grid { grid-template-columns: 1fr; gap: 42px; }
  .section-heading { margin-bottom: 30px; }
  .product-grid { grid-template-columns: 1fr; }
  .product-media { aspect-ratio: 1 / .7; }
  .factory-visual { min-height: 420px; }
  .factory-photo { height: 340px; }
  .asset-note { margin-top: 7px; }
  .stat-panel { right: 0; bottom: 30px; padding: 16px 18px; }
  .stat-panel strong { font-size: 23px; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .engineering-grid { grid-template-columns: repeat(2, 1fr); }
  .engineering-footer { display: block; }
  .engineering-footer .button { margin-top: 18px; }
  .process-item { min-height: 185px; padding: 20px 15px; }
  .process-item span { margin-bottom: 24px; }
  .form-row { grid-template-columns: 1fr; }
  .form-actions { align-items: flex-start; }
  .inquiry-form .button { width: 100%; }
  .contact-row strong, .contact-row a { display: block; margin-top: 5px; text-align: left; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
  .footer-bottom { display: block; }
  .footer-bottom span { display: block; margin-bottom: 6px; }
  .dialog-media { height: 210px; }
  .dialog-content { padding: 25px; }
  .dialog-content h2 { font-size: 30px; }
}


/* 主推新品 · 角接触轴承应用 */
.featured-apps { margin-top: 48px; padding-top: 40px; border-top: 1px solid var(--line); }
.featured-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.featured-intro { max-width: 730px; }
.featured-intro h3 { margin: 8px 0 10px; font-size: clamp(20px, 2.2vw, 26px); font-weight: 600; color: var(--ink); }
.featured-intro p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.78; }
.featured-nav { display: flex; gap: 10px; flex: none; }
.slider-btn { width: 42px; height: 42px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 50%; background: var(--white); color: var(--blue); font-size: 16px; line-height: 1; cursor: pointer; transition: background .2s ease, color .2s ease, border-color .2s ease; }
.slider-btn:hover:not(:disabled) { border-color: var(--blue); background: var(--blue); color: #fff; }
.slider-btn:disabled { opacity: .3; cursor: default; }
.featured-track { display: flex; gap: 18px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 2px 2px 10px; scrollbar-width: none; -ms-overflow-style: none; }
.featured-track::-webkit-scrollbar { display: none; }
.app-card { flex: 0 0 clamp(286px, 34%, 430px); scroll-snap-align: start; border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: var(--white); transition: border-color .25s ease, box-shadow .25s ease; }
.app-card:hover { border-color: rgba(18,100,172,.32); box-shadow: 0 14px 34px rgba(18,100,172,.09); }
.app-media { background: #f7fafd; border-bottom: 1px solid var(--line); }
.app-media img { display: block; width: 100%; height: auto; aspect-ratio: 3 / 2; object-fit: cover; }
.app-body { padding: 16px 18px 20px; }
.app-body h4 { margin: 6px 0 8px; font-size: 17px; font-weight: 600; color: var(--ink); }
.app-body p { margin: 0; color: var(--muted); font-size: 13.5px; line-height: 1.72; }
@media (max-width: 760px) {
  .featured-head { flex-direction: column; align-items: flex-start; gap: 18px; }
  .app-card { flex-basis: 84%; }
}