:root {
    --ink: #161b1e;
    --muted: #657078;
    --line: #d8dddf;
    --paper: #ffffff;
    --soft: #f2f4f4;
    --red: #c9362b;
    --red-dark: #97251d;
    --green: #3d7563;
    --gold: #d1a439;
    --shell: 1240px;
    --shadow: 0 22px 60px rgba(18, 25, 29, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Inter, "Segoe UI", Arial, "Microsoft YaHei", sans-serif; font-size: 16px; line-height: 1.65; overflow-x: hidden; }
html.page-loading, html.page-loading body { overflow: hidden; }
body, button, input, textarea, select { letter-spacing: 0; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
.shell { width: min(calc(100% - 48px), var(--shell)); margin-inline: auto; }
.section { padding: 112px 0; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; color: var(--red); font-size: 12px; font-weight: 800; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 30px; height: 2px; background: currentColor; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.12; }
h1 { font-size: 64px; }
h2 { font-size: 42px; }
h3 { font-size: 22px; }
p { color: var(--muted); }

.page-loader { display: none; }
.js .page-loader { position: fixed; z-index: 1000; inset: 0; min-height: 100svh; display: grid; place-items: center; overflow: hidden; background: #111719; color: #fff; opacity: 0; visibility: hidden; pointer-events: none; transition: opacity .38s ease, visibility .38s ease; }
.js.page-loading .page-loader { opacity: 1; visibility: visible; pointer-events: auto; }
.page-loader-inner { width: min(280px, calc(100% - 56px)); display: flex; flex-direction: column; align-items: center; }
.page-loader-mark { width: 68px; height: 68px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.24); color: var(--gold); font-size: 20px; font-weight: 850; }
.page-loader-inner strong { margin-top: 24px; font-size: 15px; }
.page-loader-subtitle { margin-top: 5px; color: rgba(255,255,255,.46); font-size: 9px; }
.page-loader-track { width: 100%; height: 2px; margin-top: 28px; overflow: hidden; background: rgba(255,255,255,.14); }
.page-loader-track i { width: 100%; height: 100%; display: block; background: var(--red); transform: scaleX(.08); transform-origin: left; transition: transform .2s ease; }

.topbar { height: 34px; background: #101416; color: #bdc5c9; font-size: 12px; }
.topbar-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.topbar a:hover { color: #fff; }
.site-header { position: sticky; z-index: 50; top: 0; height: 84px; background: rgba(255, 255, 255, .96); border-bottom: 1px solid rgba(20, 27, 30, .1); transition: box-shadow .3s ease, height .3s ease; }
.site-header.scrolled { height: 72px; box-shadow: 0 10px 32px rgba(18, 25, 29, .08); }
.nav-wrap { height: 100%; display: flex; align-items: center; }
.brand { min-width: 245px; display: inline-flex; align-items: center; gap: 12px; }
.brand img { width: 58px; height: 58px; object-fit: contain; }
.brand span { display: flex; flex-direction: column; line-height: 1.1; }
.brand strong { font-size: 17px; }
.brand small { margin-top: 5px; color: var(--muted); font-size: 10px; text-transform: uppercase; }
.main-nav { margin-left: auto; display: flex; align-items: center; height: 100%; }
.main-nav a { position: relative; height: 100%; padding: 0 17px; display: flex; align-items: center; font-size: 14px; font-weight: 650; white-space: nowrap; }
.main-nav a::after { content: ""; position: absolute; left: 17px; right: 17px; bottom: 0; height: 3px; background: var(--red); transform: scaleX(0); transform-origin: right; transition: transform .3s ease; }
.main-nav a:hover::after, .main-nav a.active::after { transform: scaleX(1); transform-origin: left; }
.lang-switch { margin-left: 18px; padding-left: 18px; border-left: 1px solid var(--line); font-size: 13px; font-weight: 800; color: var(--red); }
.nav-toggle { display: none; width: 42px; height: 42px; border: 0; background: transparent; padding: 9px; }
.nav-toggle span { display: block; height: 2px; margin: 6px 0; background: var(--ink); }

.hero { position: relative; height: clamp(520px, calc(100svh - 150px), 760px); min-height: 520px; overflow: hidden; background: #1d2022; color: #fff; }
.hero-media { position: absolute; inset: -4%; width: 108%; height: 108%; max-width: none; object-fit: cover; object-position: center 60%; animation: hero-in 1.6s cubic-bezier(.2,.75,.2,1) both; will-change: transform; }
.hero-shade { position: absolute; inset: 0; background: rgba(8, 10, 11, .56); }
.hero::after { content: ""; position: absolute; inset: 0; border: 1px solid rgba(255,255,255,.08); pointer-events: none; }
.hero-content { position: relative; z-index: 2; height: 100%; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; padding-bottom: 34px; }
.hero-eyebrow { color: #fff; opacity: .82; }
.hero h1 { max-width: 850px; margin: 28px 0 24px; font-size: 68px; font-weight: 750; }
.hero p { max-width: 680px; margin-bottom: 34px; color: rgba(255,255,255,.78); font-size: 19px; line-height: 1.7; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-index { position: absolute; z-index: 2; right: 24px; bottom: 34px; display: flex; align-items: center; gap: 14px; color: rgba(255,255,255,.65); font-size: 10px; writing-mode: vertical-rl; }
.hero-index i { width: 1px; height: 46px; background: rgba(255,255,255,.42); }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; padding: 12px 24px; border: 1px solid transparent; border-radius: 2px; font-size: 13px; font-weight: 800; transition: transform .25s ease, background .25s ease, border-color .25s ease, color .25s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--red); color: #fff; }
.button-primary:hover { background: var(--red-dark); }
.button-ghost { color: #fff; border-color: rgba(255,255,255,.65); background: rgba(0,0,0,.12); }
.button-ghost:hover { background: #fff; color: var(--ink); border-color: #fff; }
.button-dark { background: var(--ink); color: #fff; }
.button-dark:hover { background: var(--green); }
.button-light { background: #fff; color: var(--ink); }
.button-light:hover { background: var(--gold); }

.metric-strip { background: #f4f5f5; border-bottom: 1px solid var(--line); }
.metrics { min-height: 126px; display: grid; grid-template-columns: repeat(4, 1fr); }
.metrics > div { display: flex; align-items: baseline; align-content: center; flex-wrap: wrap; padding: 22px 34px; border-left: 1px solid var(--line); }
.metrics > div:last-child { border-right: 1px solid var(--line); }
.metrics strong { font-size: 34px; line-height: 1; }
.metrics > div > span { margin-left: 3px; color: var(--red); font-size: 18px; font-weight: 800; }
.metrics small { flex-basis: 100%; margin-top: 9px; color: var(--muted); font-size: 11px; text-transform: uppercase; }

.section-heading { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); gap: 80px; align-items: end; margin-bottom: 52px; }
.section-heading h2 { max-width: 720px; margin: 15px 0 0; }
.section-heading > p { margin: 0; max-width: 480px; }
.section-heading.light h2, .section-heading.light p { color: #fff; }
.products-section { background: #fff; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.electrode-grid { grid-template-columns: repeat(4, 1fr); }
.product-card { border: 1px solid var(--line); border-radius: 4px; background: #fff; overflow: hidden; transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease; }
.product-card:hover { transform: translateY(-7px); border-color: transparent; box-shadow: var(--shadow); }
.product-image { position: relative; display: block; aspect-ratio: 4 / 3; overflow: hidden; background: #edf0f0; }
.product-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s cubic-bezier(.2,.7,.2,1); }
.product-card:hover .product-image img { transform: scale(1.055); }
.product-image > span { position: absolute; top: 14px; right: 14px; padding: 5px 8px; background: var(--red); color: #fff; font-size: 10px; font-weight: 800; text-transform: uppercase; }
.product-card-body { padding: 24px 25px 27px; }
.product-card-body small { color: var(--red); font-size: 10px; font-weight: 800; text-transform: uppercase; }
.product-card-body h3 { margin: 10px 0 12px; font-size: 21px; }
.product-card-body h3 a:hover { color: var(--red); }
.product-card-body p { min-height: 52px; margin-bottom: 20px; font-size: 14px; }
.text-link { display: inline-flex; align-items: center; gap: 16px; color: var(--ink); font-size: 12px; font-weight: 800; text-transform: uppercase; }
.text-link span { display: inline-grid; place-items: center; width: 26px; height: 26px; border: 1px solid var(--line); transition: background .25s, color .25s; }
.text-link:hover { color: var(--red); }
.text-link:hover span { background: var(--red); color: #fff; border-color: var(--red); }
.section-action { margin-top: 40px; text-align: center; }
.supporting-products { display: grid; grid-template-columns: .8fr 1.2fr; gap: 72px; align-items: end; margin-top: 78px; padding-top: 38px; border-top: 1px solid var(--line); }
.supporting-products h3 { max-width: 470px; margin: 13px 0 0; font-size: 25px; }
.supporting-links { border-top: 1px solid var(--line); }
.supporting-links a { min-height: 58px; display: flex; align-items: center; justify-content: space-between; gap: 20px; border-bottom: 1px solid var(--line); font-size: 13px; font-weight: 750; transition: padding .25s ease, color .25s ease; }
.supporting-links a:hover { padding-left: 12px; color: var(--red); }
.supporting-links b { color: var(--red); font-size: 20px; }

.about-split { display: grid; grid-template-columns: 1.08fr .92fr; padding: 0; background: var(--soft); }
.about-photo { position: relative; min-height: 680px; overflow: hidden; }
.about-photo img { width: 100%; height: 100%; object-fit: cover; transition: transform 1s ease; }
.about-photo:hover img { transform: scale(1.025); }
.about-photo > span { position: absolute; left: 0; bottom: 0; padding: 16px 28px; background: var(--red); color: #fff; font-size: 11px; font-weight: 800; text-transform: uppercase; }
.about-copy { max-width: 660px; align-self: center; padding: 80px 72px; }
.about-copy h2 { margin: 18px 0 26px; }
.about-copy > p { font-size: 17px; }
.feature-lines { margin: 34px 0 38px; border-top: 1px solid var(--line); }
.feature-lines > div { display: flex; align-items: center; gap: 22px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.feature-lines b { color: var(--red); font-size: 11px; }
.feature-lines span { display: flex; flex-direction: column; }
.feature-lines strong { font-size: 14px; }
.feature-lines small { color: var(--muted); }

.applications-preview { position: relative; background: #172025; color: #fff; }
.applications-preview::before { content: "YH"; position: absolute; right: 5%; top: 20px; color: rgba(255,255,255,.025); font-size: 260px; font-weight: 900; line-height: 1; pointer-events: none; }
.application-row { position: relative; z-index: 1; border-top: 1px solid rgba(255,255,255,.17); }
.application-item { display: grid; grid-template-columns: 76px 1fr 40px; align-items: center; min-height: 90px; border-bottom: 1px solid rgba(255,255,255,.17); transition: background .25s ease, padding .25s ease; }
.application-item:hover { padding-left: 20px; background: rgba(255,255,255,.055); }
.application-item b { color: var(--gold); font-size: 12px; }
.application-item span { font-size: 21px; }
.application-item i { font-style: normal; color: var(--red); font-size: 24px; }

.quality-preview { background: #fff; }
.quality-grid { display: grid; grid-template-columns: .85fr 1.15fr; align-items: center; gap: 78px; }
.quality-content h2 { margin: 18px 0 25px; }
.quality-content p { margin-bottom: 31px; font-size: 17px; }
.quality-photo { position: relative; }
.quality-photo img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.quality-photo > div { position: absolute; left: -42px; bottom: -40px; width: 170px; height: 150px; display: flex; flex-direction: column; justify-content: center; padding: 24px; background: var(--green); color: #fff; }
.quality-photo strong { font-size: 34px; }
.quality-photo span { font-size: 11px; text-transform: uppercase; }

.news-section { background: var(--soft); }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news-card img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; margin-bottom: 20px; transition: transform .6s ease, filter .6s ease; }
.news-card > a:first-child { display: block; overflow: hidden; }
.news-card:hover img { transform: scale(1.04); filter: contrast(1.05); }
.news-card time { color: var(--red); font-size: 11px; font-weight: 800; text-transform: uppercase; }
.news-card h3 { margin: 10px 0 12px; }
.news-card h3 a:hover { color: var(--red); }
.news-card p { font-size: 14px; }

.contact-band { background: var(--red); color: #fff; padding: 60px 0; }
.contact-band-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.contact-band .eyebrow { color: #fff; opacity: .75; }
.contact-band h2 { max-width: 720px; margin: 13px 0 0; font-size: 36px; }
.site-footer { padding: 72px 0 22px; background: #111618; color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 55px; }
.brand-footer { min-width: 0; }
.brand-footer img { width: 64px; height: 64px; }
.brand-footer small { color: rgba(255,255,255,.55); }
.footer-brand p { max-width: 380px; margin-top: 20px; color: rgba(255,255,255,.55); font-size: 14px; }
.footer-grid h3 { margin: 9px 0 22px; color: rgba(255,255,255,.45); font-size: 11px; text-transform: uppercase; }
.footer-grid > div:not(:first-child) { display: flex; flex-direction: column; gap: 10px; }
.footer-grid a, .footer-grid span { color: rgba(255,255,255,.72); font-size: 13px; }
.footer-grid a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; margin-top: 55px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.12); color: rgba(255,255,255,.4); font-size: 11px; }

.page-banner { padding: 110px 0 92px; background: #171d20; color: #fff; }
.page-banner h1 { max-width: 960px; margin: 22px 0; font-size: 54px; }
.page-banner p { max-width: 720px; margin: 0; color: rgba(255,255,255,.66); font-size: 17px; }
.inner-hero { position: relative; min-height: 570px; display: flex; align-items: flex-end; overflow: hidden; color: #fff; }
.inner-hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.inner-shade { position: absolute; inset: 0; background: rgba(10,13,15,.58); }
.inner-hero .shell { position: relative; padding-bottom: 78px; }
.inner-hero h1 { max-width: 850px; margin: 22px 0 0; font-size: 58px; }
.inner-hero p { max-width: 720px; margin: 22px 0 0; color: rgba(255,255,255,.72); font-size: 17px; }
.products-hero > img { object-position: center; }
.news-hero > img { object-position: center; }
.contact-hero > img { object-position: center; }
.quality-hero > img { object-position: center; }
.editorial-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 110px; align-items: start; }
.editorial-title { position: sticky; top: 110px; }
.editorial-title h2 { margin: 18px 0 0; }
.prose { color: var(--muted); font-size: 17px; }
.prose p { margin-bottom: 24px; }
.history-section, .capability-section, .testing-band, .product-process, .electrode-guide { background: #172025; color: #fff; }
.company-hero > img { object-position: center 54%; }
.capability-flow { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(255,255,255,.18); border-left: 1px solid rgba(255,255,255,.18); }
.capability-flow > div { min-height: 300px; padding: 30px 28px; border-right: 1px solid rgba(255,255,255,.18); border-bottom: 1px solid rgba(255,255,255,.18); transition: background .3s ease, transform .3s ease; }
.capability-flow > div:hover { background: rgba(255,255,255,.05); transform: translateY(-4px); }
.capability-flow b { color: var(--gold); font-size: 11px; }
.capability-flow h3 { margin: 82px 0 15px; font-size: 20px; }
.capability-flow p { margin: 0; color: rgba(255,255,255,.6); font-size: 13px; }
.timeline { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(255,255,255,.18); }
.timeline > div { position: relative; min-height: 285px; padding: 38px 26px 28px 0; border-right: 1px solid rgba(255,255,255,.18); }
.timeline > div::before { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; background: var(--red); }
.timeline b { color: var(--gold); font-size: 13px; }
.timeline h3 { margin: 72px 0 14px; font-size: 20px; }
.timeline p { color: rgba(255,255,255,.6); font-size: 13px; }
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.values-grid > div { padding: 38px; border: 1px solid var(--line); border-top: 4px solid var(--red); }
.values-grid b { color: var(--red); }
.values-grid h3 { margin: 42px 0 15px; }
.honor-section { background: var(--soft); }
.honor-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.honor-card { overflow: hidden; border: 1px solid var(--line); background: #fff; }
.honor-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; padding: 18px; background: #eef0f0; transition: transform .5s ease; }
.honor-card:hover img { transform: scale(1.025); }
.honor-card > div { padding: 22px; }
.honor-card h3 { margin: 0; font-size: 18px; }
.honor-card p { margin: 10px 0 0; font-size: 13px; }
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 42px; }
.filter-bar a { padding: 11px 18px; border: 1px solid var(--line); font-size: 13px; font-weight: 700; }
.filter-bar a:hover, .filter-bar a.active { background: var(--ink); color: #fff; border-color: var(--ink); }
.products-all { grid-template-columns: repeat(3, 1fr); }
.technical-table { border-top: 1px solid rgba(255,255,255,.2); border-left: 1px solid rgba(255,255,255,.2); }
.technical-row { display: grid; grid-template-columns: .55fr 1.35fr 1.1fr .8fr; }
.technical-row > * { min-width: 0; padding: 20px 22px; border-right: 1px solid rgba(255,255,255,.2); border-bottom: 1px solid rgba(255,255,255,.2); color: rgba(255,255,255,.74); font-size: 13px; overflow-wrap: anywhere; }
.technical-row strong { color: var(--gold); font-size: 15px; }
.technical-row:not(.technical-head) { transition: background .25s ease; }
.technical-row:not(.technical-head):hover { background: rgba(255,255,255,.05); }
.technical-head > * { color: rgba(255,255,255,.42); font-size: 10px; font-weight: 800; text-transform: uppercase; }
.size-reference { background: var(--soft); }
.size-reference-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; align-items: start; }
.size-reference h2 { margin: 18px 0 24px; }
.size-list { margin: 0; border-top: 4px solid var(--red); background: #fff; box-shadow: var(--shadow); }
.size-list > div { display: grid; grid-template-columns: .32fr .68fr; gap: 24px; padding: 19px 24px; border-bottom: 1px solid var(--line); }
.size-list dt { color: var(--muted); font-size: 11px; font-weight: 800; text-transform: uppercase; }
.size-list dd { margin: 0; font-size: 13px; font-weight: 650; overflow-wrap: anywhere; }

.product-detail-hero { padding: 72px 0 80px; background: var(--soft); }
.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: center; }
.product-detail-image { background: #fff; border: 1px solid var(--line); }
.product-detail-image img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.back-link { display: inline-block; margin-bottom: 44px; color: var(--muted); font-size: 12px; font-weight: 800; text-transform: uppercase; }
.back-link:hover { color: var(--red); }
.product-detail-copy h1 { margin: 20px 0 24px; font-size: 54px; }
.product-detail-copy p { margin-bottom: 30px; font-size: 18px; }
.detail-content { display: grid; grid-template-columns: .9fr 1.1fr; gap: 100px; align-items: start; }
.detail-content .prose h2 { margin: 18px 0 28px; color: var(--ink); }
.spec-panel { padding: 38px; background: var(--soft); border-top: 4px solid var(--red); }
.spec-panel h2 { font-size: 25px; }
.spec-table { margin: 24px 0 18px; border-top: 1px solid var(--line); }
.spec-table > div { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.spec-table span { color: var(--muted); font-size: 13px; }
.spec-table strong { text-align: right; font-size: 13px; }
.spec-panel > small { display: block; color: var(--muted); font-size: 10px; }
.process-row { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid rgba(255,255,255,.18); border-left: 1px solid rgba(255,255,255,.18); }
.process-row > div { min-height: 130px; display: flex; flex-direction: column; justify-content: space-between; padding: 22px; border-right: 1px solid rgba(255,255,255,.18); border-bottom: 1px solid rgba(255,255,255,.18); }
.process-row b { color: var(--gold); font-size: 11px; }
.process-row span { font-size: 15px; }
.selection-section { background: #fff; padding-top: 0; }
.selection-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.selection-grid > div { min-height: 250px; padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .3s ease, color .3s ease; }
.selection-grid > div:hover { background: var(--ink); color: #fff; }
.selection-grid b { color: var(--red); font-size: 11px; }
.selection-grid h3 { margin: 65px 0 14px; }
.selection-grid p { margin: 0; font-size: 13px; }
.selection-grid > div:hover p { color: rgba(255,255,255,.62); }

.test-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-left: 1px solid rgba(255,255,255,.16); border-top: 1px solid rgba(255,255,255,.16); }
.test-grid > div { min-height: 120px; display: flex; flex-direction: column; justify-content: space-between; padding: 20px; border-right: 1px solid rgba(255,255,255,.16); border-bottom: 1px solid rgba(255,255,255,.16); }
.test-grid b { color: var(--gold); font-size: 11px; }
.test-grid span { font-size: 15px; }
.equipment-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.equipment-grid figure { margin: 0; background: var(--soft); overflow: hidden; }
.equipment-grid img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform .6s ease; }
.equipment-grid figure:hover img { transform: scale(1.035); }
.equipment-grid figcaption { padding: 18px 20px; font-weight: 700; }

.application-cards { display: grid; grid-template-columns: repeat(3, 1fr); border-left: 1px solid var(--line); border-top: 1px solid var(--line); }
.application-cards article { min-height: 280px; padding: 32px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .3s, color .3s; }
.application-cards article:hover { background: var(--ink); color: #fff; }
.application-cards b { color: var(--red); font-size: 12px; }
.application-cards h3 { margin: 74px 0 15px; }
.application-cards p { font-size: 14px; }
.application-cards article:hover p { color: rgba(255,255,255,.62); }
.application-photo-band { position: relative; min-height: 560px; display: flex; align-items: center; color: #fff; overflow: hidden; }
.application-photo-band > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.application-photo-band::after { content: ""; position: absolute; inset: 0; background: rgba(10,13,15,.65); }
.application-photo-band .shell { position: relative; z-index: 1; }
.application-photo-band h2 { max-width: 760px; margin: 20px 0 30px; font-size: 48px; }
.news-list { row-gap: 64px; }

.article-header { padding: 95px 0 70px; background: #172025; color: #fff; text-align: center; }
.article-header .back-link { color: rgba(255,255,255,.6); }
.article-header time { display: block; color: var(--gold); font-size: 11px; font-weight: 800; text-transform: uppercase; }
.article-header h1 { max-width: 980px; margin: 22px auto; font-size: 52px; }
.article-header p { max-width: 740px; margin: 0 auto; color: rgba(255,255,255,.64); font-size: 18px; }
.article-image { margin-top: 55px; }
.article-image img { width: 100%; max-height: 600px; object-fit: cover; }
.article-body { max-width: 780px; margin: 64px auto 110px; padding-inline: 24px; }

.contact-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 70px; align-items: start; }
.contact-details { padding: 42px; background: #172025; color: #fff; }
.contact-details h2 { margin: 18px 0 34px; font-size: 30px; }
.contact-details > div { display: flex; flex-direction: column; padding: 16px 0; border-top: 1px solid rgba(255,255,255,.16); }
.contact-details small { color: rgba(255,255,255,.45); font-size: 10px; text-transform: uppercase; }
.contact-details a, .contact-details span { margin-top: 4px; font-size: 14px; overflow-wrap: anywhere; }
.contact-details img { width: 100%; aspect-ratio: 16 / 10; margin-top: 28px; object-fit: cover; }
.inquiry-panel { padding-top: 8px; }
.inquiry-panel h2 { margin: 18px 0 34px; }
.inquiry-form { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.inquiry-form label { display: block; margin-bottom: 7px; font-size: 12px; font-weight: 800; }
.inquiry-form input, .inquiry-form textarea, .inquiry-form select { width: 100%; border: 1px solid var(--line); border-radius: 0; background: #fff; padding: 12px 14px; color: var(--ink); outline: none; }
.inquiry-form input, .inquiry-form select { height: 48px; }
.inquiry-form textarea { resize: vertical; }
.inquiry-form input:focus, .inquiry-form textarea:focus, .inquiry-form select:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(201,54,43,.09); }
.form-full { grid-column: 1 / -1; }
.honeypot { position: absolute !important; left: -9999px !important; width: 1px !important; height: 1px !important; }
.flash { margin-bottom: 24px; padding: 13px 16px; border-left: 4px solid; font-size: 13px; }
.flash.success { background: #eef7f2; border-color: var(--green); color: #285646; }
.flash.error { background: #fff0ef; border-color: var(--red); color: #84251e; }

.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .75s ease, transform .75s cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.product-grid .reveal:nth-child(2), .news-grid .reveal:nth-child(2), .equipment-grid .reveal:nth-child(2) { transition-delay: .08s; }
.product-grid .reveal:nth-child(3), .news-grid .reveal:nth-child(3), .equipment-grid .reveal:nth-child(3) { transition-delay: .16s; }
@keyframes hero-in { from { opacity: 0; transform: scale(1.08); } to { opacity: 1; transform: scale(1.02); } }

@media (max-width: 1080px) {
    h1 { font-size: 52px; }
    h2 { font-size: 36px; }
    .brand { min-width: 205px; }
    .brand img { width: 50px; height: 50px; }
    .main-nav a { padding-inline: 10px; font-size: 12px; }
    .main-nav a::after { left: 10px; right: 10px; }
    .lang-switch { margin-left: 10px; padding-left: 10px; }
    .hero h1 { font-size: 56px; }
    .product-grid, .products-all, .electrode-grid { grid-template-columns: repeat(2, 1fr); }
    .about-copy { padding: 64px 42px; }
    .quality-grid { gap: 48px; }
    .footer-grid { grid-template-columns: 1.4fr repeat(3, 1fr); gap: 28px; }
}

@media (max-width: 820px) {
    .shell { width: min(calc(100% - 32px), var(--shell)); }
    .section { padding: 82px 0; }
    .topbar { display: none; }
    .site-header, .site-header.scrolled { height: 72px; }
    .brand { min-width: 0; }
    .brand img { width: 44px; height: 44px; }
    .brand strong { font-size: 14px; }
    .brand small { font-size: 9px; }
    .nav-toggle { display: block; margin-left: auto; }
    .lang-switch { order: 2; margin-left: 5px; }
    .nav-toggle { order: 3; }
    .main-nav { position: fixed; z-index: 60; top: 72px; left: 0; right: 0; height: auto; display: none; flex-direction: column; align-items: stretch; margin: 0; padding: 12px 16px 22px; background: #fff; border-bottom: 1px solid var(--line); box-shadow: 0 20px 30px rgba(20,27,30,.12); }
    .main-nav.open { display: flex; }
    .main-nav a { height: 48px; padding: 0 4px; border-bottom: 1px solid var(--line); font-size: 14px; }
    .main-nav a::after { display: none; }
    .hero { height: clamp(480px, calc(100svh - 110px), 680px); min-height: 480px; }
    .hero-content { padding-bottom: 10px; }
    .hero h1 { max-width: 620px; margin: 20px 0; font-size: 46px; }
    .hero p { max-width: 580px; font-size: 16px; }
    .hero-index { display: none; }
    .metrics { grid-template-columns: repeat(2, 1fr); }
    .metrics > div:nth-child(2) { border-right: 1px solid var(--line); }
    .metrics > div:nth-child(n+3) { border-top: 1px solid var(--line); }
    .section-heading { grid-template-columns: 1fr; gap: 22px; }
    .about-split { grid-template-columns: 1fr; }
    .about-photo { min-height: 480px; }
    .about-copy { max-width: none; padding: 72px 32px; }
    .quality-grid { grid-template-columns: 1fr; gap: 66px; }
    .quality-photo > div { left: 18px; bottom: -35px; }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
    .editorial-grid, .product-detail-grid, .detail-content, .contact-layout, .supporting-products, .size-reference-grid { grid-template-columns: 1fr; gap: 55px; }
    .editorial-title { position: static; }
    .timeline { grid-template-columns: repeat(2, 1fr); }
    .capability-flow { grid-template-columns: repeat(2, 1fr); }
    .values-grid { grid-template-columns: 1fr; }
    .test-grid { grid-template-columns: repeat(2, 1fr); }
    .equipment-grid { grid-template-columns: 1fr 1fr; }
    .application-cards { grid-template-columns: repeat(2, 1fr); }
    .honor-grid { grid-template-columns: repeat(2, 1fr); }
    .product-detail-copy h1 { font-size: 46px; }
    .process-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 560px) {
    body { font-size: 15px; }
    h1 { font-size: 38px; }
    h2 { font-size: 31px; }
    .section { padding: 68px 0; }
    .hero h1 { font-size: 38px; }
    .hero p { font-size: 15px; }
    .hero-actions { width: 100%; }
    .hero-actions .button { flex: 1; min-width: 145px; padding-inline: 14px; }
    .metrics > div { padding: 18px 16px; }
    .metrics strong { font-size: 28px; }
    .product-grid, .products-all, .electrode-grid, .news-grid { grid-template-columns: 1fr; }
    .product-card-body p { min-height: auto; }
    .about-photo { min-height: 340px; }
    .about-copy { padding: 62px 20px; }
    .application-item { grid-template-columns: 48px 1fr 24px; }
    .application-item span { font-size: 17px; }
    .contact-band-inner { align-items: flex-start; flex-direction: column; }
    .contact-band h2 { font-size: 30px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-brand { grid-column: auto; }
    .footer-bottom { flex-direction: column; gap: 7px; }
    .page-banner { padding: 78px 0 68px; }
    .page-banner h1 { font-size: 39px; }
    .inner-hero { min-height: 470px; }
    .inner-hero .shell { padding-bottom: 50px; }
    .inner-hero h1 { font-size: 40px; }
    .inner-hero p { font-size: 15px; }
    .timeline, .capability-flow, .test-grid, .equipment-grid, .application-cards, .selection-grid, .honor-grid { grid-template-columns: 1fr; }
    .capability-flow > div { min-height: 230px; }
    .capability-flow h3 { margin-top: 48px; }
    .technical-row { grid-template-columns: 1fr; border-bottom: 1px solid rgba(255,255,255,.24); }
    .technical-row > * { border-bottom: 0; }
    .technical-row > *::before { display: block; margin-bottom: 4px; color: rgba(255,255,255,.38); font-size: 9px; font-weight: 800; text-transform: uppercase; }
    .technical-row:not(.technical-head) > *:nth-child(1)::before { content: "Grade / 等级"; }
    .technical-row:not(.technical-head) > *:nth-child(2)::before { content: "Furnace / 炉型"; }
    .technical-row:not(.technical-head) > *:nth-child(3)::before { content: "Load / 负载"; }
    .technical-row:not(.technical-head) > *:nth-child(4)::before { content: "Diameter / 直径"; }
    .technical-head { display: none; }
    .size-list > div { grid-template-columns: 1fr; gap: 7px; }
    .timeline > div { min-height: 220px; border-right: 0; }
    .timeline h3 { margin-top: 48px; }
    .values-grid > div { padding: 28px; }
    .product-detail-hero { padding-top: 42px; }
    .product-detail-copy h1 { font-size: 38px; }
    .spec-panel { padding: 26px 20px; }
    .process-row { grid-template-columns: 1fr; }
    .application-photo-band h2 { font-size: 36px; }
    .article-header h1 { font-size: 38px; }
    .article-header p { font-size: 16px; }
    .contact-details { padding: 28px 22px; }
    .inquiry-form { grid-template-columns: 1fr; }
    .form-full { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
    .reveal { opacity: 1; transform: none; }
}