:root{--ink:#192322;--muted:#596563;--green:#0c665b;--green-dark:#084c44;--purple:#652086;--paper:#f3f5f4;--line:#dce2df;--white:#fff;--header-height:80px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 16px)}
body{margin:0;background:var(--white);color:var(--ink);font-family:"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;letter-spacing:0;-webkit-font-smoothing:antialiased}
body.dialog-open{overflow:hidden}
button,a{-webkit-tap-highlight-color:transparent}
button,input{font:inherit}
button{cursor:pointer;color:inherit}
a{color:inherit;text-decoration:none}
button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #529b89;outline-offset:5px}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4,p,ol,ul{margin:0}
::selection{background:#d6e8e1;color:#122b24}
.container{width:min(1280px,calc(100% - 96px));margin-inline:auto}
.icon{width:20px;height:20px;flex:none;object-fit:contain}
.icon-light{filter:brightness(0) invert(1)}
.skip-link{position:fixed;top:-100px;left:24px;z-index:200;padding:12px 20px;background:white;border:2px solid var(--green)}
.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid #e5e9e7}
.header-inner{height:var(--header-height);display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:14px;flex:none}
.brand>img{width:58px;height:40px;object-fit:contain}
.brand>span{display:grid;gap:4px;line-height:1.25}
.brand strong{font-size:22px;font-weight:650}
.brand small{font-size:10px;color:#63706c}
.desktop-nav{display:flex;gap:32px;align-items:center;font-size:14px}
.desktop-nav a{position:relative;padding-block:12px}
.desktop-nav a::after{content:"";position:absolute;inset:auto 0 6px;height:1px;background:var(--green);transform:scaleX(0);transform-origin:left;transition:transform .2s}
.desktop-nav a:hover::after,.desktop-nav a[aria-current="location"]::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.button{min-height:50px;display:inline-flex;align-items:center;justify-content:center;gap:32px;padding:12px 23px;border:1px solid transparent;border-radius:3px;font-size:15px;font-weight:500;line-height:1.4;transition:background .2s,border-color .2s}
.button .icon{transition:transform .2s}
.button:hover .icon,.text-link:hover .icon{transform:translate(2px,-2px)}
.button-compact{min-height:42px;gap:20px;padding:10px 17px;font-size:13px}
.button-dark{background:var(--green);color:white}
.button-dark:hover{background:var(--green-dark)}
.button-white{background:#fff;color:var(--ink)}
.button-white:hover{background:#e7eeeb}
.button-outline{border-color:rgba(255,255,255,.6);color:white;background:transparent}
.button-outline:hover{background:rgba(255,255,255,.12);border-color:white}
.icon-button{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;flex:none;border:1px solid transparent;border-radius:3px;background:transparent;transition:background .2s}
.icon-button:hover{background:#e8eeeb}
.menu-toggle{display:none}
.hero{position:relative;isolation:isolate;color:white;height:min(700px,calc(100svh - 190px));min-height:500px;background:#28312f;scroll-margin-top:var(--header-height)}
.hero-image{position:absolute;inset:0;z-index:-2}
.hero-image img{width:100%;height:100%;object-fit:cover;object-position:50% 50%}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:rgba(6,19,17,.13)}
.hero-inner{height:100%;display:flex;flex-direction:column;justify-content:center;position:relative;padding-block:66px 94px}
.hero-content{max-width:600px}
.eyebrow{font-size:12px;font-weight:550;color:var(--green);line-height:1.5}
.hero-eyebrow{color:#ddeae5;display:flex;align-items:center;gap:12px}
.hero-eyebrow::before{content:"";height:1px;width:24px;background:#a2cabb}
.hero h1{font-size:94px;line-height:1.12;font-weight:550;margin:24px 0 17px}
.hero h1 span{font-weight:400}
.hero-subtitle{font-size:32px;line-height:1.45;font-weight:450}
.hero-description{font-size:15px;line-height:1.85;color:#e3e8e6;margin-top:20px}
.hero-actions{display:flex;gap:12px;margin-top:32px}
.hero-footnote{position:absolute;bottom:27px;left:0;right:0;display:flex;justify-content:space-between;align-items:center;font-size:10px;line-height:1.4;color:#e8ecea}
.hero-footnote span:last-child{padding:4px 8px;background:rgba(20,32,28,.6);border-radius:2px}
.intro{border-bottom:1px solid var(--line);scroll-margin-top:var(--header-height)}
.intro-inner{padding-block:48px;display:grid;grid-template-columns:1.05fr 1.6fr .95fr;gap:56px;align-items:center}
.intro h2{font-size:24px;line-height:1.55;font-weight:500}
.intro p{font-size:14px;line-height:1.95;color:var(--muted)}
.intro-chain{display:flex;align-items:center;justify-content:flex-end;gap:15px;font-size:15px;white-space:nowrap}
.intro-chain .icon{width:14px;height:14px;opacity:.45}
.section{padding-block:104px;position:relative;scroll-margin-top:var(--header-height)}
.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:48px;margin-bottom:52px}
.section-heading h2,.about h2{font-size:42px;line-height:1.4;font-weight:500;margin-top:16px}
.section-description{font-size:15px;line-height:1.85;color:var(--muted);max-width:380px;padding-bottom:5px}
.business-group{display:grid;grid-template-columns:240px 1fr 1fr;gap:64px;padding:38px 0 42px;border-top:1px solid var(--line)}
.group-heading{position:relative}
.group-number{font-size:12px;font-family:"SFMono-Regular",Consolas,monospace;color:#5b736b}
.group-heading h3{font-size:23px;font-weight:500;line-height:1.4;margin-top:14px}
.group-heading p{font-size:13px;color:var(--muted);margin-top:7px}
.group-icon{width:30px;height:30px;margin-top:28px;opacity:.6}
.product-label{font-family:"SFMono-Regular",Consolas,monospace;font-size:10px;color:#647a72;line-height:1.5}
.product h4{font-size:23px;font-weight:550;line-height:1.5;margin-top:10px}
.product>p:not(.product-label){font-size:15px;line-height:1.85;color:var(--muted);margin-top:14px}
.product details{margin-top:21px}
.product summary{list-style:none;display:inline-flex;align-items:center;justify-content:space-between;gap:20px;min-height:35px;font-size:13px;color:var(--green);cursor:pointer}
.product summary::-webkit-details-marker{display:none}
.product summary .icon{width:16px;height:16px;transition:transform .2s}
.product details[open] summary .icon{transform:rotate(45deg)}
.product ul{padding:8px 0 0 18px;color:var(--muted);font-size:13px;line-height:1.95}
.product li::marker{color:#769e8e}
.extended-product{border-block:1px solid var(--line);display:grid;grid-template-columns:240px 1fr auto;gap:64px;padding-block:32px;align-items:center}
.extended-product h3{font-size:21px;font-weight:500;margin-top:8px}
.extended-product>p{color:var(--muted);font-size:14px;line-height:1.9}
.text-link{display:inline-flex;gap:24px;align-items:center;color:var(--green);font-size:14px;font-weight:500;line-height:1.5;min-height:44px;white-space:nowrap}
.text-link .icon{width:18px;height:18px;transition:transform .2s}
.applications{background:var(--paper)}
.anchor-alias{position:absolute;top:0;left:0;scroll-margin-top:var(--header-height)}
.applications .section-heading h2{font-size:38px}
.case-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.case-image{position:relative;aspect-ratio:1.7;display:flex;align-items:center;background:#1e2524;overflow:hidden}
.case-image>img{width:100%;height:100%;object-fit:contain;transition:transform .35s}
.case-image-light{background:#e7e9e8}
.case-image-safety{background:#c8ccc7}
.case-image:hover>img{transform:scale(1.025)}
.zoom-icon{position:absolute;right:12px;bottom:12px;width:32px;height:32px;background:rgba(20,35,29,.78);display:grid;place-items:center;border-radius:2px}
.zoom-icon .icon{width:16px;height:16px}
.case-caption{padding-top:23px}
.case-caption>span{font-size:11px;color:#66766e}
.case-caption h3{font-size:22px;line-height:1.5;font-weight:500;margin-top:7px}
.case-caption p{color:var(--muted);font-size:14px;line-height:1.9;margin-top:10px}
.case-note{font-size:11px;color:#68766f;margin-top:34px;padding-top:22px;border-top:1px solid #d7dfda;line-height:1.8}
.delivery-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));list-style:none;padding:0;gap:32px}
.delivery-steps li{border-top:1px solid #baccc3;padding-top:22px}
.step-number{font-size:30px;line-height:1.2;font-weight:350;color:#799286}
.delivery-steps h3{font-size:22px;line-height:1.5;font-weight:500;margin-top:24px}
.delivery-steps p{font-size:14px;color:var(--muted);line-height:1.9;margin-top:10px;min-height:54px}
.step-result{display:block;font-size:12px;color:var(--green);margin-top:25px}
.about{background:#edf2ef;border-block:1px solid #e0e7e1;padding-block:75px}
.about-inner{display:grid;grid-template-columns:1fr 1.05fr;gap:110px}
.about h2{font-size:34px}
.about-copy{padding-top:8px;color:#485b51;font-size:15px;line-height:1.95}
.about-copy p+p{margin-top:14px}
.contact{padding-block:100px 86px}
.contact-inner{display:grid;grid-template-columns:1fr 1.05fr;gap:110px}
.contact-heading h2{font-size:50px;font-weight:500;line-height:1.35;margin-top:17px}
.contact-heading>p:not(.eyebrow){font-size:14px;line-height:1.95;color:var(--muted);margin-top:26px}
.contact-heading .text-link{margin-top:20px}
.contact-row{display:flex;justify-content:space-between;align-items:center;gap:16px;border-bottom:1px solid var(--line);padding-bottom:25px;margin-bottom:26px}
.contact-row>div{min-width:0}
.contact-label{display:block;font-size:12px;line-height:1.7;color:var(--muted)}
.contact-value{display:block;margin-top:7px;line-height:1.4;font-weight:400;overflow-wrap:anywhere}
.contact-value:hover{color:var(--green)}
.phone-value{font-size:36px}
.email-value{font-size:29px}
.copy-button{border-color:var(--line);width:40px;height:40px}
.contact-bottom{display:flex;justify-content:space-between;align-items:flex-start;gap:30px}
.address-block p{font-size:17px;line-height:1.75;margin-top:9px}
.company-name{display:block;font-size:11px;color:#697670;margin-top:17px}
.wechat-block{flex:none;text-align:center}
.qr-link{display:block;background:white;padding:7px;border:1px solid var(--line);border-radius:3px}
.qr-link img{width:130px;height:131px;object-fit:contain}
.wechat-block>span{display:block;font-size:11px;color:var(--muted);margin-top:7px}
.site-footer{border-top:1px solid var(--line);background:#fff;font-size:11px;color:#62716a}
.footer-inner{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:24px}
.footer-links{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.footer-links a:hover{color:var(--green);text-decoration:underline}
.police-beian{display:inline-flex;align-items:center;gap:5px}
.police-beian img{width:16px;height:18px;object-fit:contain}
.mobile-contact{display:none}
dialog{border:0;padding:0;color:var(--ink);background:white;max-height:calc(100dvh - 48px);overflow:auto;box-shadow:0 16px 70px rgba(0,0,0,.18)}
dialog::backdrop{background:rgba(11,23,19,.62)}
dialog:not([open]){display:none}
.menu-dialog{margin:0 0 0 auto;width:min(420px,100%);max-width:100%;min-height:440px;max-height:100dvh}
.menu-dialog-inner{padding:18px 28px 28px}
.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:18px}
.dialog-heading h2,.dialog-heading strong{font-size:20px;font-weight:550;line-height:1.5}
.menu-dialog nav{margin-top:25px;display:grid}
.menu-dialog nav a{display:flex;align-items:center;justify-content:space-between;padding-block:17px;border-bottom:1px solid var(--line);font-size:19px}
.menu-dialog-inner>p{font-size:12px;color:var(--muted);margin-top:30px}
.media-dialog{width:min(1050px,calc(100% - 48px));border-radius:6px}
.media-dialog-inner{padding:22px 28px 26px}
.media-image-wrap{margin-top:20px;display:flex;justify-content:center;background:var(--paper)}
.media-image-wrap img{max-height:calc(100dvh - 230px);object-fit:contain;width:100%;height:auto}
.media-dialog.is-qr{width:min(460px,calc(100% - 32px))}
.media-dialog.is-qr .media-image-wrap{background:white;padding:10px}
.media-dialog.is-qr .media-image-wrap img{width:320px;height:auto;max-height:calc(100dvh - 220px);object-fit:contain}
#media-caption{margin-top:18px;color:var(--muted);font-size:13px;line-height:1.7}
.toast{position:fixed;bottom:28px;left:50%;transform:translate(-50%,12px);max-width:calc(100vw - 36px);padding:11px 20px;border-radius:4px;background:var(--ink);color:white;font-size:13px;line-height:1.5;z-index:200;opacity:0;visibility:hidden;transition:opacity .18s,transform .18s}
.toast.is-visible{transform:translate(-50%,0);opacity:1;visibility:visible}
@media(min-width:1700px){.hero-content{max-width:650px}.hero h1{font-size:108px}.hero-subtitle{font-size:36px}.hero-description{font-size:16px}.hero-image img{object-position:center 54%}}
@media(max-width:1100px){.container{width:calc(100% - 64px)}.desktop-nav{gap:21px}.brand{gap:10px}.brand strong{font-size:20px}.business-group{grid-template-columns:185px 1fr 1fr;gap:36px}.extended-product{grid-template-columns:185px 1fr auto;gap:36px}.intro-inner{gap:30px;grid-template-columns:1fr 1.5fr}.intro-chain{display:none}.contact-inner,.about-inner{gap:60px}.case-grid{gap:22px}.section-heading h2{font-size:38px}.applications .section-heading h2{font-size:34px}.phone-value{font-size:31px}.email-value{font-size:27px}}
@media(max-width:900px){:root{--header-height:72px}.desktop-nav{display:none}.menu-toggle{display:inline-flex}.hero{height:min(680px,calc(100svh - 170px));min-height:510px}.hero h1{font-size:78px}.hero-subtitle{font-size:29px}.hero-content{max-width:500px}.hero-image img{object-position:60% center}.hero::before{background:rgba(5,17,14,.27)}.section{padding-block:76px}.section-heading{gap:28px;margin-bottom:40px}.section-heading h2{font-size:34px}.section-description{max-width:300px;font-size:14px}.business-group{grid-template-columns:1fr 1fr;gap:24px 40px}.group-heading{grid-column:1/-1;display:flex;align-items:baseline;gap:16px}.group-heading h3{margin:0}.group-heading p{margin:0}.group-icon{display:none}.extended-product{grid-template-columns:1fr auto;gap:20px}.extended-product>div{grid-column:1/-1;display:flex;align-items:baseline;gap:20px}.extended-product h3{margin:0}.case-grid{grid-template-columns:1fr;gap:30px}.case-item{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}.case-caption{padding:0}.case-image{aspect-ratio:1.7}.applications .section-heading h2{font-size:32px}.applications .section-heading{align-items:flex-start;flex-direction:column;gap:14px}.delivery-steps{grid-template-columns:1fr 1fr;gap:36px}.delivery-steps p{min-height:0}.about-inner,.contact-inner{gap:40px}.about h2{font-size:29px}.contact-heading h2{font-size:42px}.phone-value{font-size:28px}.email-value{font-size:22px}.contact-bottom{gap:20px;flex-wrap:wrap}.footer-inner{flex-direction:column;align-items:flex-start;gap:10px}}
@media(max-width:600px){:root{--header-height:66px}.container{width:calc(100% - 40px)}.header-inner{gap:12px}.brand>img{width:45px;height:33px}.brand strong{font-size:19px}.brand small{font-size:9px}.header-actions{gap:1px}.header-actions .button{min-height:36px;padding:8px 11px;font-size:11px;gap:8px}.header-actions .button .icon{width:14px;height:14px}.icon-button{width:42px;height:42px}.hero{height:min(614px,calc(100svh - 165px));min-height:495px}.hero-image img{object-position:56% center}.hero::before{background:rgba(8,22,18,.42)}.hero-inner{padding-block:40px 70px;justify-content:center}.hero-content{max-width:100%}.hero-eyebrow{font-size:11px}.hero h1{font-size:68px;margin-block:25px 18px}.hero-subtitle{font-size:27px;line-height:1.45}.hero-description{font-size:13px;line-height:1.85;margin-top:19px;max-width:310px}.hero-actions{gap:10px;margin-top:28px}.hero-actions .button{min-height:46px;gap:24px;padding:11px 18px;font-size:13px}.hero-footnote{font-size:8px;bottom:17px;align-items:flex-end;gap:16px}.hero-footnote span:first-child{max-width:140px;line-height:1.7}.hero-footnote span:last-child{font-size:9px}.intro-inner{padding-block:31px;grid-template-columns:1fr;gap:16px}.intro h2{font-size:23px;line-height:1.5}.intro h2 br{display:none}.intro p{font-size:13px;line-height:1.9}.section{padding-block:59px}.section-heading{display:block;margin-bottom:32px}.section-heading h2,.applications .section-heading h2{font-size:30px;line-height:1.4;margin-top:13px}.section-description{margin-top:19px;max-width:100%;padding:0;font-size:14px}.desktop-break{display:none}.business-group{grid-template-columns:1fr;gap:28px;padding-block:26px 33px}.group-heading{flex-wrap:wrap;gap:5px 13px}.group-heading h3{font-size:22px}.group-heading p{width:100%;padding-left:29px;font-size:12px}.group-number{font-size:11px}.product{padding-left:29px}.product h4{font-size:22px;margin-top:7px}.product>p:not(.product-label){font-size:14px;line-height:1.85;margin-top:11px}.product-label{font-size:9px}.product details{margin-top:12px}.product summary{font-size:12px;min-height:38px}.product ul{font-size:12px;padding-top:7px}.extended-product{grid-template-columns:1fr;gap:14px;padding-block:27px}.extended-product>div{gap:16px}.extended-product h3{font-size:21px}.extended-product>p{font-size:13px}.extended-product .text-link{justify-self:start;min-height:32px}.applications .section-heading .text-link{margin-top:16px}.case-grid{gap:34px}.case-item{display:block}.case-image{aspect-ratio:1.7}.case-caption{padding-top:18px}.case-caption>span{font-size:11px}.case-caption h3{font-size:22px}.case-caption p{font-size:14px}.case-note{font-size:10px;margin-top:30px;line-height:1.85}.delivery-steps{grid-template-columns:1fr 1fr;gap:30px 22px}.step-number{font-size:27px}.delivery-steps h3{font-size:20px;margin-top:16px}.delivery-steps p{font-size:13px;line-height:1.85}.step-result{font-size:11px;margin-top:18px}.about-inner,.contact-inner{grid-template-columns:1fr;gap:27px}.about h2{font-size:29px}.about-copy{font-size:14px;padding:0}.contact-heading h2{font-size:39px}.contact-heading>p:not(.eyebrow){font-size:13px;margin-top:19px}.contact-heading .text-link{margin-top:14px}.contact-details{margin-top:10px}.contact-row{padding-bottom:21px;margin-bottom:23px}.phone-value{font-size:31px}.email-value{font-size:26px}.contact-bottom{gap:20px;flex-wrap:nowrap}.address-block p{font-size:14px}.company-name{font-size:10px;max-width:170px;line-height:1.8;margin-top:12px}.qr-link img{width:109px;height:110px}.wechat-block>span{font-size:10px}.footer-inner{font-size:10px;padding-block:25px calc(84px + env(safe-area-inset-bottom));gap:16px}.footer-links{gap:10px;align-items:flex-start;flex-direction:column;font-size:10px}.police-beian{white-space:nowrap}.mobile-contact{display:grid;grid-template-columns:1fr 1fr;position:fixed;bottom:0;left:0;right:0;z-index:45;background:#fff;border-top:1px solid var(--line);padding:8px 14px calc(8px + env(safe-area-inset-bottom));gap:8px}.mobile-contact a{display:flex;align-items:center;justify-content:center;gap:9px;min-height:42px;font-size:13px;border-radius:3px}.mobile-contact .mobile-wechat{background:var(--green);color:white}.mobile-contact .icon{width:18px;height:18px}.media-dialog{width:calc(100% - 24px)}.media-dialog-inner{padding:14px 16px 20px}.dialog-heading h2{font-size:17px}.media-image-wrap{margin-top:14px}.media-image-wrap img{max-height:calc(100dvh - 230px)}#media-caption{font-size:12px;line-height:1.8}.toast{bottom:calc(78px + env(safe-area-inset-bottom));width:max-content;text-align:center}.menu-dialog-inner{padding-inline:24px}}
@media(max-width:370px){.container{width:calc(100% - 32px)}.brand{gap:8px}.brand small{font-size:8px}.brand>img{width:40px;height:30px}.header-actions .button{padding-inline:9px;gap:4px}.header-actions .button .icon{display:none}.hero h1{font-size:62px}.hero-subtitle{font-size:25px}.hero-actions .button{gap:22px;padding-inline:16px}.section-heading h2,.applications .section-heading h2{font-size:28px}.contact-bottom{gap:12px}.address-block p{font-size:13px}.qr-link img{width:96px;height:97px}.email-value{font-size:24px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}