:root{--bg:#ffffff;--surface:#f2f3f5;--text:#1f2329;--muted:#61666c;--accent:#2f3a45;--line:#d7d9dd}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,Noto Sans,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
a{color:var(--text);text-decoration:none}
img{max-width:100%;display:block}
code{background:var(--line);padding:.25rem .5rem;border-radius:.25rem}

.container{max-width:1100px;margin:0 auto;padding:0 24px}
.section{padding:72px 0}
.section.alt{background:var(--surface)}
.section h2{font-size:36px;margin:0 0 10px;text-align:center}
.section h2::after{content:"";display:block;width:72px;height:3px;background:var(--accent);margin-top:10px}
.section p{color:var(--text);max-width:800px;margin:0 auto}
.list{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:6px;margin:10px 0 0;padding:0}
.list li{list-style:none;padding:8px 0;border-bottom:1px solid var(--line)}

.site-header{position:relative;z-index:50;background:var(--bg);border-bottom:1px solid var(--line)}
.site-header .brand{display:flex;align-items:center;justify-content:center;gap:12px;padding:18px 24px}
.site-header .brand.center{justify-content:center}
.site-header #logo{height:44px}
#logo-fallback{display:none;font-weight:800;letter-spacing:.08em;color:var(--text)}

.hero{position:relative;min-height:64vh;background:linear-gradient(180deg,rgba(47,58,69,.06),rgba(47,58,69,.02) 60%),url('assets/bg.png') center/cover no-repeat}
.hero-canvas{position:absolute;inset:0;width:100%;height:100%}
.hero-content{position:relative;max-width:980px;margin:0 auto;padding:120px 24px;text-align:center}
.hero h1{font-size:44px;margin:0;color:#2b3137}
.hero p{color:#4b5259;margin:14px 0 0;font-size:20px}
.hero .line-bg{background:#ffffff;padding:.18em .60em;-webkit-box-decoration-break:clone;box-decoration-break:clone}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border-radius:12px;background:var(--accent);color:#fff;font-weight:700;letter-spacing:.02em}
.btn.ghost{background:transparent;border:2px solid var(--accent);color:var(--accent)}
.btn:hover{filter:brightness(1.06)}
.btn-xl{padding:18px 28px;font-size:18px}

.split{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center;justify-items:center}
.visual{min-height:320px;border-radius:18px;position:relative;overflow:hidden}
.visual-img{width:100%;height:100%;object-fit:cover;display:block}
.visual::after{content:"";position:absolute;inset:0;background:linear-gradient(140deg,rgba(47,58,69,.14),transparent 50%)}
.about-visual{border-left:6px solid var(--line)}
.services-visual{border-right:6px solid var(--line)}

.catalog-cta{display:flex;flex-direction:column;align-items:center;gap:10px;margin-bottom:8px}
.catalog-view{position:relative;background:#f7f8fa;border:1px solid var(--line);border-radius:18px;overflow:hidden}
.catalog-view iframe{width:100%;height:70vh;border:0;background:#111}
.pdf-wrapper{background:#f7f8fa}
.pdf-frame{display:block}
.pdfjs-viewer{display:block}
.pdf-toolbar{display:flex;align-items:center;gap:10px;padding:10px;border-bottom:1px solid var(--line);background:#f2f3f5}
.pdf-btn{appearance:none;border:1px solid var(--line);background:#fff;color:#2f3a45;border-radius:8px;padding:6px 10px;line-height:1}
.pdf-space{flex:1}
.pdf-canvas{display:block;margin:0 auto}
.catalog-fallback{position:absolute;inset:0;display:none;align-items:center;justify-content:center;text-align:center;padding:24px}
.catalog-fallback p{margin:6px 0}

.marquee{overflow:hidden;border-radius:18px;border:1px solid var(--line);background:#f7f8fa;-webkit-mask-image:linear-gradient(90deg,transparent 0%,#000 8%,#000 92%,transparent 100%);mask-image:linear-gradient(90deg,transparent 0%,#000 8%,#000 92%,transparent 100%)}
.track{display:flex;gap:16px;align-items:center;padding:16px;animation:scroll 40s linear infinite}
.project-img{width:320px;height:200px;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}

.contact .contact-card{background:transparent;border-top:1px solid var(--line);border-bottom:1px solid var(--line);border-radius:0;padding:24px}
.contact-brand{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.contact-logo{height:36px}
.contact-title{font-weight:800;letter-spacing:.08em}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:8px;border-top:1px solid var(--line)}
.contact-grid>div{padding:16px;border-right:1px solid var(--line)}
.contact-grid>div:last-child{border-right:0}
.contact h3{margin:0 0 6px}
.contact a{color:#2b3137}

.site-footer{border-top:1px solid var(--line);padding:24px;background:#f2f3f5}
.footer{display:flex;align-items:center;justify-content:space-between}

@media (max-width:900px){
  .split{grid-template-columns:1fr}
  .hero{min-height:54vh}
  .hero h1{font-size:40px}
}
@media (max-width:600px){
  .container{padding:0 18px}
  .section{padding:56px 0}
  .section h2{font-size:30px}
  .section p{max-width:680px}
  .hero-content{padding:96px 18px}
  .hero h1{font-size:36px}
  .hero p{font-size:18px}
  .list{grid-template-columns:1fr;gap:8px}
  .catalog-view{overflow:hidden}
  .pdf-frame{width:1024px;height:1400px;transform-origin:top left}
  .pdf-canvas{max-height:62vh}
}
  .contact-grid{grid-template-columns:1fr}
  .contact-grid>div{border-right:0;border-bottom:1px solid var(--line);text-align:center}
  .contact-grid>div:last-child{border-bottom:0}
  .project-img{width:80vw;height:50vw}
}
@media (max-width:380px){
  .container{padding:0 14px}
  .section{padding:48px 0}
  .hero h1{font-size:32px}
  .hero p{font-size:16px}
}