@font-face{font-family:Smiley;src:url("assets/fonts/smiley-sans-display.woff2") format("woff2");font-display:swap}
:root{--navy:#071a32;--navy-2:#102943;--porcelain:#f4f4f1;--paper:#fbfbf8;--ink:#122131;--green:#355b4b;--green-2:#567565;--copper:#a65732;--copper-light:#d0875c;--line:#c8c8c2;--focus:#efb36f;--display:Smiley,"Microsoft YaHei",sans-serif;--body:"Microsoft YaHei",system-ui,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.7;overflow-x:hidden}
body.menu-open{overflow:hidden}
img{display:block;width:100%;height:auto}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
:focus-visible{outline:3px solid var(--focus);outline-offset:4px;box-shadow:0 0 0 2px var(--navy)}
.skip-link{position:fixed;top:10px;left:10px;z-index:1000;padding:10px 14px;background:#fff;color:#071a32;transform:translateY(-150%)}
.skip-link:focus{transform:none}
.site-header{height:78px;padding:0 clamp(24px,5vw,84px);display:flex;align-items:center;justify-content:space-between;background:var(--navy);color:#fff;position:relative;z-index:20}
.brand{display:flex;align-items:center;gap:12px;min-height:48px}
.brand-mark{width:42px;height:42px;fill:none;stroke:var(--copper-light);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}
.brand-mark circle{fill:var(--copper-light);stroke:none}
.brand span{display:grid;line-height:1.2}.brand b{font-size:16px;letter-spacing:.06em}.brand small{margin-top:5px;color:#aebccc;font-size:11px;letter-spacing:.2em}
.desktop-nav{display:flex;align-items:center;gap:clamp(18px,2.6vw,42px)}
.desktop-nav a{display:flex;align-items:center;min-height:48px;color:#dbe3eb;font-size:13px;position:relative}
.desktop-nav a::after{content:"";position:absolute;left:0;right:100%;bottom:5px;height:2px;background:var(--copper-light);transition:right .25s ease}.desktop-nav a:hover::after,.desktop-nav a:focus-visible::after{right:0}
.menu-button{display:none;min-width:64px;min-height:48px;border:0;background:transparent;color:#fff}.menu-button i{display:inline-block;width:16px;height:8px;border-top:2px solid;border-bottom:2px solid;margin-left:8px}
.mobile-nav{width:100%;max-width:none;height:100%;max-height:none;margin:0;border:0;padding:0;background:var(--navy);color:#fff}.mobile-nav::backdrop{background:rgba(7,26,50,.6)}
.mobile-nav-head{height:78px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #31445b}.menu-close{min-height:48px;padding:0 6px;background:transparent;border:0;color:#fff}
.mobile-nav nav{display:grid;padding:30px 24px}.mobile-nav nav a{font-family:var(--display);font-size:clamp(30px,8vw,48px);line-height:1.2;padding:18px 0;border-bottom:1px solid #31445b}
.hero{background:var(--navy);min-height:calc(100vh - 78px);padding:12px;position:relative}
.hero-panel{min-height:calc(100vh - 102px);position:relative;overflow:hidden;background:var(--porcelain);border:1px solid #c8cbc8;box-shadow:inset 0 0 0 7px #ececea}
.hero-panel::before{content:"";position:absolute;inset:18px;border:1px solid #bcc1be;pointer-events:none}.hero-panel::after{content:"";position:absolute;inset:25px;pointer-events:none;background:radial-gradient(circle at 0 0,#6a6e6b 0 3px,transparent 4px),radial-gradient(circle at 100% 0,#6a6e6b 0 3px,transparent 4px),radial-gradient(circle at 0 100%,#6a6e6b 0 3px,transparent 4px),radial-gradient(circle at 100% 100%,#6a6e6b 0 3px,transparent 4px)}
.hero-copy{position:absolute;z-index:4;left:7%;top:10%;width:min(42%,610px)}
h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.04;margin:0}
h1{font-size:clamp(62px,6vw,92px);letter-spacing:-.045em;color:var(--navy)}
.hero-intro{max-width:430px;margin:32px 0 0;color:#40505c;font-size:clamp(16px,1.35vw,20px)}
.primary-action{margin-top:34px;display:inline-flex;min-height:50px;align-items:center;gap:42px;padding:0 18px 0 24px;background:var(--copper);color:#fff;font-weight:700}.primary-action svg{width:24px;fill:none;stroke:currentColor;stroke-width:2}
.hero-media{position:absolute;z-index:1;left:38%;right:4%;top:5%;bottom:15%;margin:0;overflow:hidden}.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-circuit{list-style:none;position:absolute;z-index:5;left:7%;right:7%;bottom:7.5%;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr)}.hero-circuit::before{content:"";position:absolute;left:0;right:0;top:0;height:4px;background:var(--copper);transform-origin:left;animation:conductor-draw 1.2s cubic-bezier(.16,1,.3,1) both}.hero-circuit li{position:relative;padding:24px 10px 0}.hero-circuit li:first-child{padding-left:0}.hero-circuit span{position:absolute;top:-7px;left:8px;width:18px;height:18px;border-radius:50%;background:var(--porcelain);border:5px solid var(--copper)}.hero-circuit li:first-child span{left:0}.hero-circuit b{font-size:13px;color:var(--navy)}.equipment-symbol{position:absolute;left:8px;top:-80px;width:66px;height:54px;fill:var(--green);stroke:var(--navy);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.hero-circuit li:first-child .equipment-symbol{left:0}
.hero-panel>.primary-action{position:absolute;z-index:6;left:7%;top:57%;margin:0}
@keyframes conductor-draw{from{transform:scaleX(0)}to{transform:scaleX(1)}}
.path-overview{padding:clamp(80px,10vw,150px) clamp(24px,8vw,130px);background:var(--paper)}
.section-heading{display:block;max-width:970px}
.section-heading h2,.manufacturing h2,.development h2,.contact h2{font-size:clamp(42px,5.2vw,76px);letter-spacing:-.04em}.section-heading p{max-width:700px;margin:24px 0 0;color:#58646c}
.path-steps{list-style:none;margin:72px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);position:relative}.path-steps::before{content:"";position:absolute;left:6%;right:6%;top:13px;height:3px;background:var(--copper)}
.path-steps li{position:relative;padding-top:42px}.path-steps li::before{content:"";position:absolute;top:5px;left:0;width:17px;height:17px;border-radius:50%;background:var(--paper);border:5px solid var(--copper);z-index:1}.path-steps span{display:block;color:var(--green);font-size:12px;letter-spacing:.18em}.path-steps strong{display:block;margin-top:6px;font-size:17px}
.system-story{position:relative;padding:130px clamp(24px,7vw,112px) 160px;background:var(--porcelain);overflow:hidden}.story-heading{margin-bottom:110px}.story-line{position:absolute;top:300px;bottom:80px;left:calc(50% - 55px);width:110px;height:calc(100% - 390px);overflow:visible}.story-line path{fill:none;stroke:var(--copper);stroke-width:2.5;vector-effect:non-scaling-stroke;stroke-linecap:round;stroke-linejoin:round}
.product-passage{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.7fr);gap:clamp(60px,9vw,150px);align-items:center;min-height:600px;position:relative;margin:0 auto;max-width:1350px}.product-passage+ .product-passage{margin-top:60px}.product-passage figure{margin:0;background:var(--navy);padding:12px}.product-passage figure img{aspect-ratio:3/2;object-fit:cover}.product-copy{position:relative;max-width:460px}.product-copy .node{position:absolute;width:20px;height:20px;border-radius:50%;background:var(--porcelain);border:5px solid var(--copper);left:-81px;top:12px;z-index:2}.product-index{color:var(--copper);font:700 12px/1 var(--display);letter-spacing:.18em;margin:0 0 18px}.product-copy h3{font-size:clamp(36px,4vw,62px);color:var(--navy)}.product-copy>p:not(.product-index){margin:24px 0 0;color:#4c5b65}.product-copy a{display:inline-block;margin-top:24px;min-height:44px;padding:9px 0;border-bottom:2px solid var(--copper);font-weight:700}
.passage-right{grid-template-columns:minmax(280px,.7fr) minmax(0,1.15fr)}.passage-right figure{order:2}.passage-right .product-copy{justify-self:end}.passage-right .product-copy .node{left:auto;right:-81px}
.manufacturing{display:grid;grid-template-columns:minmax(360px,.8fr) minmax(0,1.2fr);background:var(--navy);color:#fff;min-height:760px}.manufacturing-copy{padding:clamp(80px,9vw,140px) clamp(36px,7vw,110px);align-self:center}.manufacturing h2{margin-top:26px}.manufacturing-copy>p{color:#bdc9d4;max-width:640px;margin:28px 0 0}.manufacturing figure{margin:0;min-height:100%}.manufacturing figure img{height:100%;object-fit:cover}.manufacturing dl{margin:55px 0 0}.manufacturing dl div{display:grid;grid-template-columns:120px 1fr;gap:20px;padding:18px 0;border-top:1px solid #33475e}.manufacturing dt{color:var(--copper-light);font-weight:700}.manufacturing dd{margin:0;color:#dbe3eb}
.development{display:grid;grid-template-columns:1fr 1fr;background:var(--paper)}.development-image{min-height:760px}.development-image img{height:100%;object-fit:cover}.development-copy{padding:clamp(80px,9vw,140px) clamp(36px,7vw,110px);align-self:center}.development h2{margin:26px 0 52px}.year-line{display:grid;grid-template-columns:110px 1fr;gap:30px;padding:28px 0;border-top:1px solid var(--line)}.year-line time{font:700 36px/1 var(--display);color:var(--green)}.year-line p,.identity-line p{margin:0;color:#55616a}.identity-line{padding:28px 0;border-top:1px solid var(--line)}.identity-line strong{display:block;font-size:20px;margin-bottom:8px;color:var(--copper)}
.contact{display:grid;grid-template-columns:minmax(0,.8fr) minmax(540px,1.2fr);background:var(--green);color:#fff}.contact-image{margin:0;min-height:100%}.contact-image img{height:100%;object-fit:cover}.contact-panel{padding:clamp(80px,8vw,130px) clamp(36px,7vw,110px)}.contact h2{margin-top:26px}.contact-panel>p{max-width:650px;color:#dce6e0}.contact-details{margin:46px 0;display:grid;grid-template-columns:1fr 1fr;border-top:1px solid rgba(255,255,255,.28)}.contact-details a,.contact-details>p{display:grid;margin:0;min-height:86px;padding:16px 16px 16px 0;border-bottom:1px solid rgba(255,255,255,.28)}.contact-details a:nth-child(odd),.contact-details>p:nth-child(odd){border-right:1px solid rgba(255,255,255,.28)}.contact-details a:nth-child(even){padding-left:20px}.contact-details>p{grid-column:1/-1;border-right:0}.contact-details span{font-size:12px;color:#c9d8cf}.contact-details strong{align-self:end;font-size:15px;overflow-wrap:anywhere}
form{display:grid;grid-template-columns:1fr 1fr;gap:18px 20px}label{display:grid;gap:8px;font-size:13px;color:#dce6e0}.full{grid-column:1/-1}input,select,textarea{width:100%;border:1px solid #92aa9c;border-radius:0;background:#f9f7f0;color:var(--ink);padding:12px 14px;min-height:48px}textarea{resize:vertical}form button{justify-self:start;min-height:50px;padding:0 28px;border:0;background:var(--copper);color:#fff;font-weight:700;cursor:pointer}.form-status{grid-column:1/-1;min-height:28px;margin:0;color:#fff}.form-status.static{margin-top:8px}
.site-footer{min-height:120px;padding:30px clamp(24px,5vw,84px);display:grid;grid-template-columns:1fr auto auto;gap:40px;align-items:center;background:#041326;color:#d7e0e8}.site-footer div{display:grid}.site-footer div span{font-size:12px;color:#91a2b3}.site-footer p{margin:0;color:#91a2b3;font-size:12px}.site-footer a{min-height:44px;display:flex;align-items:center;border-bottom:1px solid var(--copper-light)}
@media(max-width:1050px){.desktop-nav{display:none}.menu-button{display:block}.hero-copy{width:38%}.hero-copy .hero-intro{max-width:280px}.hero-media{left:45%;right:2%;top:8%;bottom:18%}.path-steps{grid-template-columns:1fr 1fr;gap:40px 20px}.path-steps::before{display:none}.path-steps li{padding-top:28px;border-top:2px solid var(--copper)}.path-steps li::before{top:-11px}.system-story{padding-left:74px}.story-line{left:14px;width:46px}.product-passage,.passage-right{grid-template-columns:1fr 1fr;gap:50px;min-height:480px}.passage-right figure{order:initial}.passage-right .product-copy{justify-self:initial}.product-copy .node,.passage-right .product-copy .node{display:block;left:-45px;right:auto}.manufacturing,.development,.contact{grid-template-columns:1fr}.manufacturing figure,.development-image,.contact-image{min-height:440px;max-height:620px}.contact{grid-template-columns:1fr}.contact-image{order:2}.contact-panel{order:1}}
@media(max-width:680px){html{scroll-padding-top:68px}.site-header,.mobile-nav-head{height:68px;padding-left:18px;padding-right:18px}.brand small{display:none}.brand-mark{width:36px;height:36px}.hero{min-height:auto;padding:7px}.hero-panel{min-height:860px}.hero-panel::before{inset:10px}.hero-panel::after{inset:15px}.hero-copy{left:8%;top:5%;width:84%}.hero-copy .hero-intro{max-width:none}h1{font-size:clamp(54px,17vw,76px)}.hero-intro{margin-top:18px}.hero-media{left:4%;right:4%;top:38%;bottom:30%}.hero-panel>.primary-action{left:8%;right:8%;top:70%;width:auto;justify-content:space-between}.hero-circuit{left:8%;right:8%;bottom:4%;grid-template-columns:repeat(4,1fr)}.hero-circuit::before{top:0}.hero-circuit li{padding:20px 4px 0}.hero-circuit b{font-size:10px;line-height:1.35}.equipment-symbol{top:-48px;width:38px;height:32px}.path-overview{padding:76px 18px}.system-story{padding:76px 18px 76px 50px}.story-line{display:block;left:8px;top:230px;width:36px;height:calc(100% - 300px)}.section-heading h2,.manufacturing h2,.development h2,.contact h2{font-size:42px}.path-steps{margin-top:50px;grid-template-columns:1fr;gap:28px}.story-heading{margin-bottom:62px}.product-passage,.passage-right{display:flex;flex-direction:column;gap:28px;min-height:auto}.product-passage+ .product-passage{margin-top:88px}.passage-right figure{order:0}.product-passage figure{padding:6px}.product-copy .node,.passage-right .product-copy .node{display:block;left:-35px;right:auto}.product-copy h3{font-size:38px}.manufacturing-copy,.development-copy,.contact-panel{padding:76px 18px}.manufacturing figure,.development-image,.contact-image{min-height:300px}.manufacturing dl div{grid-template-columns:1fr;gap:4px}.development h2{margin-bottom:36px}.year-line{grid-template-columns:1fr;gap:10px}.contact-details{grid-template-columns:1fr}.contact-details a:nth-child(odd){border-right:0}.contact-details a:nth-child(even){padding-left:0}.contact-details>p{grid-column:auto}form{grid-template-columns:1fr}.full{grid-column:auto}.site-footer{grid-template-columns:1fr;gap:18px;padding:32px 18px}.site-footer a{justify-self:start}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hero-circuit::before{animation:none}.desktop-nav a::after{transition:none}}