@font-face{font-family:"Material Display";src:url("assets/fonts/material-display.woff2") format("woff2");font-display:swap}
:root{--ink:#111311;--paper:#f2efe6;--blue:#123bff;--blue-dark:#0621a7;--amber:#eba520;--mist:#d9d5ca;--journey:0%;--display:"Material Display","Microsoft YaHei",sans-serif;--body:"Microsoft YaHei","PingFang SC",sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px;background:var(--ink)}
body{margin:0;color:var(--ink);background:var(--paper);font-family:var(--body);font-size:16px;line-height:1.75;overflow-x:hidden}
body::after{content:"";position:fixed;z-index:80;left:0;bottom:0;width:var(--journey);height:3px;background:var(--amber);pointer-events:none}
img{display:block;width:100%;height:100%;object-fit:cover}
figure,p,h1,h2,h3{margin:0}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit}
.skip-link{position:fixed;z-index:200;left:12px;top:12px;padding:10px 16px;background:var(--amber);color:var(--ink);transform:translateY(-150%)}
.skip-link:focus{transform:none}
:focus-visible{outline:3px solid var(--amber);outline-offset:4px}

.site-header{position:fixed;z-index:100;top:0;left:0;width:100%;height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 3.2vw;color:#fff;background:rgba(17,19,17,.94);transition:transform .3s ease;border-bottom:1px solid rgba(255,255,255,.14)}
.site-header.header-hidden{transform:translateY(-100%)}
.brand{display:flex;align-items:center;gap:12px;min-height:48px}
.brand-mark{width:35px;height:35px;fill:var(--paper)}
.brand span{display:grid;line-height:1.15}
.brand strong{font-family:var(--display);font-size:18px;letter-spacing:.08em}
.brand small{font-size:10px;letter-spacing:.12em;color:#bbbeb8;margin-top:5px}
.site-nav{display:flex;align-items:center;gap:clamp(24px,3vw,48px)}
.site-nav a{position:relative;display:flex;align-items:center;min-height:48px;font-size:13px;letter-spacing:.08em}
.site-nav a::after{content:"";position:absolute;left:0;bottom:5px;width:100%;height:2px;background:var(--amber);transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
.site-nav a:hover::after,.site-nav a:focus-visible::after{transform:scaleX(1)}
.menu-toggle{display:none;min-width:48px;min-height:48px;border:0;background:transparent;color:#fff;cursor:pointer}

.hero{position:relative;display:grid;grid-template-columns:42% 58%;min-height:760px;height:100svh;max-height:980px;padding-top:76px;background:var(--ink);color:#fff}
.hero-copy{position:relative;z-index:2;display:flex;flex-direction:column;justify-content:center;padding:6vw 5vw 6vw 6vw;background:var(--ink)}
.eyebrow,.section-label{font-size:11px;font-weight:700;letter-spacing:.18em;text-transform:uppercase}
.eyebrow{color:var(--amber);margin-bottom:40px}
.hero h1,.origin h2,.transform-header h2,.scope h2,.development h2,.contact h2{font-family:var(--display);font-weight:800;line-height:.94;letter-spacing:-.035em}
.hero h1{font-size:clamp(52px,6.2vw,106px);white-space:nowrap}
.hero-lead{margin-top:38px;font-size:clamp(18px,1.5vw,25px);font-weight:700;letter-spacing:.04em}
.hero-body{max-width:470px;margin-top:14px;color:#bfc1bc;font-size:14px;line-height:1.8}
.primary-action{display:inline-flex;align-items:center;justify-content:space-between;gap:28px;width:max-content;min-height:54px;margin-top:38px;padding:0 22px;background:var(--amber);color:var(--ink);font-size:13px;font-weight:700;letter-spacing:.05em;transition:transform .2s ease,background .2s ease}
.primary-action:hover{transform:translateX(5px);background:#ffc34a}
.primary-action svg{width:21px;fill:none;stroke:currentColor;stroke-width:1.7}
.hero-media{min-width:0;overflow:hidden;background:var(--blue)}
.hero-media img{object-position:center 48%}
.hero-seam{position:absolute;z-index:3;left:42%;top:76px;bottom:0;width:2px;background:rgba(235,165,32,.72)}
.hero-seam::before{content:"";position:absolute;top:23%;left:-5px;width:12px;height:12px;background:var(--amber)}
.hero-seam span{position:absolute;bottom:30px;left:14px;color:#fff;font-family:var(--display);font-size:12px;letter-spacing:.15em}

.material-index{display:grid;grid-template-columns:repeat(4,1fr);min-height:90px;background:var(--amber)}
.material-index span{display:flex;align-items:center;gap:15px;padding:20px 3vw;border-right:1px solid rgba(17,19,17,.22);font-size:13px;font-weight:700;letter-spacing:.05em}
.material-index b{font-family:var(--display);font-size:12px}

.origin{position:relative;display:grid;grid-template-columns:44% 56%;min-height:820px;background:var(--paper)}
.origin-copy{display:flex;flex-direction:column;justify-content:center;padding:110px 7vw 110px 6vw}
.section-label{color:var(--blue);margin-bottom:34px}
.origin h2,.transform-header h2,.scope h2,.development h2,.contact h2{font-size:clamp(48px,6vw,94px)}
.origin-copy>p:last-child{max-width:520px;margin-top:40px;color:#4c4f49}
.origin-media{min-height:650px;overflow:hidden}
.origin-media img{object-position:50% 50%}
.origin-note{position:absolute;right:0;bottom:0;width:56%;padding:17px 3vw;background:var(--blue);color:#fff;font-size:12px;letter-spacing:.04em}

.transformation{background:var(--ink);color:#fff;padding-top:130px}
.transform-header{display:grid;grid-template-columns:1.2fr .7fr;gap:7vw;align-items:end;padding:0 6vw 90px}
.transform-header .section-label{grid-column:1/-1;color:var(--amber);margin-bottom:-35px}
.transform-header p:last-child{max-width:500px;color:#b9bcb7;padding-bottom:5px}
.material-sequence{position:relative}
.material-sequence::before{content:"";position:absolute;z-index:4;left:50%;top:0;bottom:0;width:1px;background:rgba(235,165,32,.7)}
.material-step{position:relative;display:grid;grid-template-columns:50% 50%;min-height:590px;border-top:1px solid rgba(255,255,255,.16)}
.material-step figure{overflow:hidden;min-height:590px}
.material-step .step-copy{display:flex;flex-direction:column;justify-content:flex-end;padding:8vw 6vw}
.material-step h3{font-family:var(--display);font-size:clamp(42px,5vw,80px);line-height:1;margin-bottom:24px}
.material-step p{max-width:430px;color:#b9bcb7}
.step-number{position:absolute;z-index:5;left:calc(50% - 20px);top:30px;display:grid;place-items:center;width:40px;height:40px;background:var(--amber);color:var(--ink);font-family:var(--display);font-weight:800}
.body-step .step-copy{grid-column:2}
.body-step figure{grid-column:1;grid-row:1}
.surface-step{grid-template-columns:32% 68%;min-height:700px}
.surface-step::after{content:"SURFACE";position:absolute;z-index:2;right:3vw;bottom:1vw;color:rgba(255,255,255,.13);font-family:var(--display);font-size:clamp(70px,15vw,240px);line-height:.8;pointer-events:none}
.surface-step figure{min-height:700px}
.surface-step .step-number{left:calc(32% - 20px)}
.surface-step .step-copy{position:relative;z-index:3;background:var(--blue-dark)}

.scope{padding:140px 0 0;background:var(--paper)}
.scope-intro{display:grid;grid-template-columns:1.1fr .8fr;gap:8vw;align-items:end;padding:0 6vw 110px}
.scope-intro .section-label{grid-column:1/-1;margin-bottom:-45px}
.scope-intro>p:last-child{max-width:570px;color:#4c4f49}
.application{display:grid;grid-template-columns:62% 38%;align-items:stretch;border-top:1px solid #b9b6ad}
.application figure{min-height:630px;overflow:hidden}
.application>div{display:flex;flex-direction:column;justify-content:flex-end;padding:5vw;background:#fff}
.application span{color:var(--blue);font-size:11px;font-weight:700;letter-spacing:.18em}
.application h3{font-family:var(--display);font-size:clamp(34px,4vw,65px);line-height:1.02;margin:20px 0 26px}
.application p{color:#4c4f49;max-width:420px}
.floor-application{grid-template-columns:38% 62%}
.floor-application>div{background:var(--blue);color:#fff}
.floor-application span{color:var(--amber)}
.floor-application p{color:#d8ddff}

.development{display:grid;grid-template-columns:42% 58%;background:var(--ink);color:#fff;padding:140px 6vw}
.development-title{padding-right:6vw;position:sticky;top:120px;align-self:start}
.development-title .section-label{color:var(--amber)}
.timeline{list-style:none;margin:0;padding:0;border-top:1px solid rgba(255,255,255,.22)}
.timeline li{display:grid;grid-template-columns:110px 1fr;gap:30px;padding:46px 0;border-bottom:1px solid rgba(255,255,255,.22)}
.timeline time{font-family:var(--display);font-size:26px;color:var(--amber)}
.timeline h3{font-family:var(--display);font-size:32px;line-height:1.1;margin-bottom:14px}
.timeline p{color:#b9bcb7;max-width:660px}

.contact{position:relative;background:var(--blue);color:#fff}
.contact-media{height:580px;overflow:hidden;opacity:.87}
.contact-media::after{content:"";position:absolute;left:0;right:0;height:580px;background:linear-gradient(90deg,rgba(6,33,167,.92) 0%,rgba(6,33,167,.18) 64%,rgba(6,33,167,.55) 100%);pointer-events:none}
.contact-copy{display:grid;grid-template-columns:46% 54%;position:relative;margin-top:-170px;background:var(--blue-dark)}
.contact-intro{padding:7vw 6vw}
.contact-intro .section-label{color:var(--amber)}
.contact-intro p:last-child{max-width:520px;margin-top:35px;color:#d8ddff}
.inquiry-form{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding:7vw 6vw;background:var(--paper);color:var(--ink)}
.inquiry-form label{display:grid;gap:8px;font-size:12px;font-weight:700;letter-spacing:.06em}
.inquiry-form .wide,.inquiry-form button,.form-status,.form-noscript{grid-column:1/-1}
.inquiry-form input,.inquiry-form textarea{width:100%;border:0;border-bottom:2px solid #73766f;background:transparent;border-radius:0;padding:12px 2px;color:var(--ink);resize:vertical}
.inquiry-form input:focus,.inquiry-form textarea:focus{border-color:var(--blue);outline:0}
.inquiry-form button{display:flex;justify-content:space-between;align-items:center;min-height:58px;border:0;padding:0 20px;background:var(--amber);color:var(--ink);font-weight:700;cursor:pointer}
.form-status{font-size:12px;color:#555950}

.site-footer{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:4vw;padding:38px 5vw;background:var(--ink);color:#fff;font-size:12px}
.footer-brand{display:flex;align-items:center;gap:13px;font-family:var(--display);font-size:16px;letter-spacing:.05em}
.footer-brand svg{width:30px;height:30px;fill:var(--paper)}
.site-footer p{color:#989c95}
.site-footer a{min-height:44px;display:flex;align-items:center;color:var(--amber)}

@media(max-width:1000px){
  .hero h1{font-size:clamp(48px,6vw,72px)}
  .origin h2,.transform-header h2,.scope h2,.development h2,.contact h2{font-size:clamp(46px,6vw,70px)}
  .development{grid-template-columns:38% 62%}
}

@media(max-width:860px){
  html{scroll-padding-top:68px}
  .site-header{height:68px;padding:0 18px}
  .brand small{display:none}
  .menu-toggle{display:flex;align-items:center;gap:9px;font-size:12px}
  .menu-toggle i,.menu-toggle i::before{display:block;width:20px;height:2px;background:#fff;content:"";transition:transform .2s ease}
  .menu-toggle i::before{transform:translateY(6px)}
  .menu-toggle[aria-expanded="true"] i{transform:rotate(45deg)}
  .menu-toggle[aria-expanded="true"] i::before{transform:rotate(-90deg)}
  .site-nav{position:static;display:grid;grid-template-columns:1fr 1fr;width:100%;padding:18px;background:var(--ink)}
  .js .site-nav{position:fixed;z-index:101;top:68px;left:0;right:0;display:none;padding:26px 18px 34px;background:var(--ink);border-top:1px solid rgba(255,255,255,.15)}
  .js .site-nav.open{display:grid}
  .site-nav a{min-height:52px;border-bottom:1px solid rgba(255,255,255,.16)}
  body.menu-open{overflow:hidden}
  .hero{display:flex;flex-direction:column;min-height:0;height:auto;max-height:none;padding-top:68px}
  .hero-copy{min-height:570px;padding:80px 24px 70px}
  .eyebrow{margin-bottom:32px}
  .hero h1{font-size:clamp(50px,14vw,78px);white-space:normal}
  .hero-lead{margin-top:30px}
  .hero-media{height:64svh;min-height:460px}
  .hero-seam{left:24px;top:calc(68px + 535px);bottom:auto;width:calc(100% - 48px);height:2px}
  .hero-seam::before{top:-5px;left:42%}
  .hero-seam span{left:auto;right:0;bottom:12px}
  .material-index{grid-template-columns:1fr 1fr}
  .material-index span{min-height:68px;border-bottom:1px solid rgba(17,19,17,.22)}
  .origin{display:flex;flex-direction:column;min-height:0}
  .origin-copy{padding:100px 24px 70px}
  .origin-media{height:70svh;min-height:480px}
  .origin-note{position:static;width:100%;padding:15px 24px}
  .transform-header,.scope-intro{display:block;padding:100px 24px 70px}
  .transform-header .section-label,.scope-intro .section-label{margin-bottom:34px}
  .transform-header p:last-child,.scope-intro>p:last-child{margin-top:34px}
  .material-sequence::before{left:24px}
  .material-step,.surface-step{display:flex;flex-direction:column;min-height:0}
  .material-step .step-copy,.surface-step .step-copy{order:1;padding:70px 24px 48px}
  .material-step figure,.surface-step figure{order:2;min-height:0;height:66svh;max-height:650px}
  .step-number,.surface-step .step-number{left:4px;top:25px}
  .surface-step::after{font-size:25vw;bottom:2vw}
  .scope{padding-top:0}
  .application,.floor-application{display:flex;flex-direction:column}
  .application figure{height:66svh;min-height:460px}
  .application>div{padding:64px 24px}
  .floor-application>div{order:2}
  .floor-application figure{order:1}
  .development{display:block;padding:100px 24px}
  .development-title{position:static;padding:0 0 70px}
  .timeline li{grid-template-columns:78px 1fr;gap:18px}
  .timeline time{font-size:21px}
  .timeline h3{font-size:28px}
  .contact-media{height:68svh;min-height:480px}
  .contact-copy{display:block;margin-top:0}
  .contact-intro,.inquiry-form{padding:80px 24px}
  .inquiry-form{grid-template-columns:1fr}
  .inquiry-form label,.inquiry-form .wide,.inquiry-form button,.form-status{grid-column:1}
  .site-footer{grid-template-columns:1fr;gap:16px;padding:40px 24px}
}

@media(max-width:420px){
  .brand strong{font-size:16px}
  .brand-mark{width:31px}
  .hero-copy{padding-top:68px}
  .hero h1{font-size:49px}
  .primary-action{width:100%}
  .material-index span{padding:15px;font-size:12px}
  .origin h2,.transform-header h2,.scope h2,.development h2,.contact h2{font-size:46px}
  .timeline li{grid-template-columns:1fr}
}

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