:root{font-family:-apple-system,BlinkMacSystemFont,"Helvetica Neue","PingFang SC","Microsoft YaHei",Arial,sans-serif;color-scheme:light;--page:#f6f8fa;--surface:#fff;--ink:#152b3a;--muted:#576773;--line:#d7e0e6;--accent:#255caa;--on-accent:#fff;--cover-type:var(--ink);--cover-secondary:var(--muted);--cover-page:var(--surface)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--page);color:var(--ink);padding-bottom:84px;line-height:1.65}button,a,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}a{color:inherit;text-decoration:none}button{cursor:pointer}img{display:block;width:100%;max-width:100%;height:auto}h1,h2,h3,p,figure,dl{margin:0}h1,h2,h3{line-height:1.22;font-weight:600;letter-spacing:-.035em;overflow-wrap:break-word;hyphens:auto}h1{font-size:clamp(36px,4.4vw,70px)}h2{font-size:clamp(28px,2.7vw,42px)}h3{font-size:clamp(20px,1.75vw,27px)}p{overflow-wrap:break-word}a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:5px}a:hover{color:var(--accent)}button:disabled{cursor:default}section{scroll-margin-top:100px}.shell{width:min(1320px,calc(100% - 96px));margin-inline:auto;min-width:0}.eyebrow{font-size:12px;letter-spacing:.1em;font-weight:600;color:var(--accent);margin-bottom:18px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 22px;background:var(--accent);color:var(--on-accent);border:1px solid var(--accent);font-size:14px;line-height:1.5;transition:opacity .18s ease;max-width:100%;text-align:center}.button:hover{color:var(--on-accent);opacity:.85}.button.secondary{color:var(--ink);background:transparent;border-color:var(--line)}.button.secondary:hover{color:var(--accent)}.text-link{display:inline-block;min-height:44px;padding-block:10px;text-decoration:underline;text-underline-offset:7px}
.site-header{position:relative;z-index:30;background:var(--surface);border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:92px}.brand{display:flex;align-items:center;gap:14px;min-width:0;font-size:19px;font-weight:600;line-height:1.3}.brand-logo{width:80px;height:34px;object-fit:contain;flex-shrink:0}.brand span{max-width:240px;overflow-wrap:break-word}.site-nav{display:flex;align-items:center;gap:30px;font-size:14px}.site-nav a{padding-block:16px;white-space:nowrap}.header-actions{display:flex;align-items:center;gap:18px;flex-shrink:0}.entry-language{position:relative;display:flex;align-items:center}.entry-language .fuhai-language-trigger{font-family:inherit;color:var(--ink);max-width:130px;overflow-wrap:break-word}.entry-language .fuhai-language-choices{background:var(--surface);color:var(--ink);box-shadow:0 12px 34px rgb(0 0 0 / 12%)}.entry-language .fuhai-language-choices button{background:none;border:0;color:var(--ink);font-family:inherit}.entry-language .fuhai-language-choices button:hover{color:var(--accent)}.menu-toggle{display:none;border:0;background:none;color:var(--ink);min-width:44px;min-height:44px;padding:8px;font-size:14px}.header-actions .quote-link{min-height:44px;padding:9px 19px}
.hero{overflow:hidden;padding:66px 0 72px}.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;min-height:520px}.hero-copy{min-width:0}.hero-description{font-size:17px;line-height:1.85;color:var(--muted);max-width:580px;margin-top:28px}.hero-actions{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin-top:32px}.hero-notes{display:flex;gap:22px;flex-wrap:wrap;font-size:12px;line-height:1.5;margin-top:36px;color:var(--muted)}.hero-visual{position:relative;display:grid;place-items:center;min-width:0;min-height:500px}.hero-product{width:78%;height:430px;object-fit:contain;position:relative;z-index:1}.visual-code{position:absolute;top:12px;left:12px;font-size:11px;letter-spacing:.06em;color:var(--muted)}.visual-caption{position:absolute;bottom:8px;left:12px;font-size:13px;max-width:calc(100% - 24px);color:var(--muted)}
.series-section,.products-section,.about-section{padding:80px 0}.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:40px;margin-bottom:38px}.section-copy{min-width:0}.section-description{font-size:15px;color:var(--muted);max-width:440px}.series-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}.series-card{display:grid;grid-template-rows:auto auto 1fr auto;min-width:0;position:relative;padding:26px;background:var(--surface);color:var(--ink);transition:transform .2s ease}.series-card:hover{color:var(--ink);transform:translateY(-4px)}.series-meta{display:flex;align-items:flex-start;gap:12px}.series-index{font-size:10px;letter-spacing:.08em;color:var(--muted);padding-top:5px;flex-shrink:0}.series-description{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.8}.series-picture{display:grid;place-items:center;margin:24px 0 15px;min-width:0;background:transparent;border:0}.series-picture img{width:100%;height:185px;object-fit:contain}.series-link{font-size:12px;padding-top:8px;line-height:1.5;color:var(--accent)}.product-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px}.product-card{min-width:0;background:var(--surface);display:flex;flex-direction:column}.product-picture{display:grid;place-items:center;padding:20px;min-width:0}.product-picture img{height:290px;object-fit:contain}.product-info{padding:20px 24px 12px;flex:1}.product-info>p{margin-top:16px;font-size:14px;color:var(--muted);line-height:1.8}.product-specs{display:grid;grid-template-columns:60px minmax(0,1fr);gap:7px 12px;margin-top:20px;padding-top:15px;border-top:1px solid var(--line);font-size:12px;line-height:1.5}.product-specs dt{color:var(--muted)}.product-specs dd{margin:0;overflow-wrap:break-word}.product-info .product-reference{font-size:12px}.product-link{min-height:48px;padding:12px 24px;border-top:1px solid var(--line);font-size:13px;color:var(--accent)}
.about-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:100px}.about-copy>p:not(.eyebrow){color:var(--muted);margin-top:24px}.about-copy .text-link{margin-top:18px}.about-photo{margin-top:35px}.about-photo img{aspect-ratio:3/2;object-fit:contain}.about-facts{display:grid;gap:30px;align-content:center}.fact{position:relative;padding:22px 0 24px 42px;border-bottom:1px solid var(--line);min-width:0}.fact-index{position:absolute;left:0;top:27px;font-size:11px;color:var(--accent)}.fact h3{font-size:22px}.fact p{margin-top:15px;font-size:14px;color:var(--muted)}.contact-section{padding:64px 0 72px;background:var(--surface);border-block:1px solid var(--line)}.contact-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:80px;align-items:center}.contact-grid h2+p{margin-top:24px;max-width:620px;color:var(--muted);font-size:15px}.contact-actions{display:grid;justify-items:start;gap:18px;min-width:0}.contact-note{font-size:12px;color:var(--muted)}.site-footer{padding:28px 0;color:var(--muted);font-size:12px}.footer-inner{display:flex;gap:24px;justify-content:space-between;align-items:flex-start}.footer-inner a{min-height:44px}.detail-copy>p{max-width:760px;margin:22px 0}.detail-copy>.button{margin-top:18px}
.preview-bar{position:fixed;z-index:70;bottom:14px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:20px;border:1px solid #cad2d9;box-shadow:0 6px 20px rgb(0 0 0 / 12%);padding:7px 14px;border-radius:7px;background:#fff;color:#293e4b;font-size:12px;line-height:1.3;max-width:calc(100% - 24px);white-space:nowrap}.preview-home{min-height:40px;display:flex;align-items:center;color:#375b7a}.preview-options{display:flex;gap:3px}.preview-options a{display:grid;place-items:center;min-width:38px;min-height:40px;border-radius:4px;transition:background .15s ease}.preview-options a:hover{background:#edf3f7}.preview-options a[aria-current=page]{background:#263f51;color:#fff}.preview-name{padding-inline:6px;color:#657582}.skip-link{position:absolute;top:8px;left:8px;z-index:90;transform:translateY(-180%);background:var(--surface);padding:12px}.skip-link:focus{transform:none}.loading-note,.noscript-note{padding:80px 48px}
@media(max-width:1100px){.shell{width:calc(100% - 64px)}.header-inner{gap:18px}.site-nav{gap:18px;font-size:12px}.brand{font-size:16px;gap:9px}.brand-logo{width:64px}.header-actions{gap:10px}.hero-grid{gap:32px}.hero-product{height:370px}.hero-visual{min-height:430px}.series-grid{gap:15px}.series-card{padding:20px}.series-picture img{height:150px}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.about-grid{gap:50px}}
@media(max-width:900px){.site-nav{display:none}.menu-toggle{display:block}.nav-open .site-nav{display:flex;position:absolute;left:0;right:0;top:100%;z-index:40;background:var(--surface);border-bottom:1px solid var(--line);padding:16px 32px;gap:24px;flex-wrap:wrap}.hero-grid{min-height:400px}.hero-product{height:330px}.hero-visual{min-height:380px}.series-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.series-picture img{height:200px}}
@media(max-width:700px){html{scroll-padding-top:90px}.shell{width:calc(100% - 40px)}body{padding-bottom:100px}.header-inner{min-height:78px;gap:10px}.brand{font-size:14px;gap:7px;flex:1}.brand-logo{width:52px;height:28px}.brand span{max-width:108px}.header-actions{gap:6px}.header-actions .quote-link{display:none}.entry-language .fuhai-language-trigger{font-size:12px;max-width:95px}.nav-open .site-nav{padding:12px 20px;gap:24px}.hero{padding:32px 0 44px}.hero-grid{grid-template-columns:1fr;gap:28px;min-height:0}.hero-description{font-size:15px;margin-top:22px}.hero-actions{margin-top:24px;gap:10px}.hero-notes{font-size:11px;gap:16px;margin-top:25px}.hero-visual{min-height:330px}.hero-product{height:290px;width:80%}.visual-code{font-size:10px}.section-head{display:block;margin-bottom:26px}.section-description{margin-top:16px;font-size:13px}.series-section,.products-section,.about-section{padding:46px 0}.series-grid{gap:12px}.series-card{padding:18px}.series-meta{gap:8px}.series-card h3{font-size:19px}.series-description{font-size:12px}.series-picture{margin-block:16px 10px}.series-picture img{height:145px}.series-index{font-size:9px}.product-grid{gap:18px;grid-template-columns:1fr}.product-picture img{height:265px}.product-info{padding:18px 22px}.product-info h3{font-size:24px}.about-grid{grid-template-columns:1fr;gap:28px}.fact h3{font-size:20px}.about-facts{gap:6px}.contact-grid{grid-template-columns:1fr;gap:30px}.contact-section{padding:46px 0}.contact-grid h2+p{font-size:14px}.footer-inner{display:block;font-size:11px}.footer-inner a{display:inline-block;padding-top:12px}.preview-bar{gap:6px;padding:5px 8px;bottom:10px;font-size:10px}.preview-options{gap:0}.preview-options a{min-width:31px;min-height:38px}.preview-name{display:none}.preview-home{padding-right:5px;min-height:38px}}
@media(max-width:360px){.series-grid{grid-template-columns:1fr}.brand span{max-width:90px;font-size:12px}.brand-logo{width:45px}.hero-actions .button{width:100%}.hero-product{height:265px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}