:root{--bg:#0b0d10;--ink:#e7edf3;--muted:#9fb0bf;--brand:#7fb23a;--card:#12161b;--card2:#0f1318;--line:#1e2630;}
*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,Segoe UI,Roboto,Arial,sans-serif;line-height:1.55}
img{max-width:100%;display:block}.container{max-width:1120px;margin:0 auto;padding:0 20px}
.nav{position:sticky;top:0;backdrop-filter:saturate(120%) blur(10px);background:rgba(11,13,16,.7);border-bottom:1px solid var(--line);z-index:10}
.nav-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0}
.brand-logo{height:36px}.menu{display:none;gap:18px}.menu a{color:var(--muted);text-decoration:none;font-weight:600}.menu a:hover{color:var(--ink)}
.lang-switch{display:flex;gap:6px}.lang-btn{background:transparent;border:1px solid var(--line);color:var(--muted);padding:6px 10px;border-radius:10px;font-weight:700;cursor:pointer}
.lang-btn.active{border-color:var(--brand);color:var(--ink)}@media(min-width:940px){.menu{display:flex}}

.hero{position:relative;padding:96px 0 56px;border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;filter:brightness(.45) saturate(.9);}
.hero-inner{position:relative;display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
.hero-text h1{font-size:clamp(28px,3.2vw,48px);line-height:1.1;margin:0 0 8px;font-weight:800}
.sub{color:var(--muted);font-size:clamp(14px,1.4vw,18px);margin:0 0 16px}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}.btn{background:var(--brand);color:#0c120b;text-decoration:none;padding:12px 18px;border-radius:14px;font-weight:800;display:inline-block}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}
.badges{list-style:none;margin:18px 0 0;padding:0;display:flex;gap:10px;flex-wrap:wrap}
.badges li{background:var(--card);border:1px solid var(--line);padding:8px 12px;border-radius:12px;color:var(--muted)}

.section{padding:56px 0;border-bottom:1px solid var(--line)}.section.alt{background:linear-gradient(180deg, var(--card2), var(--bg))}
h2{font-size:clamp(22px,2.2vw,32px);margin:0 0 18px}
.cards{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.grid{display:grid;gap:16px}
.card{background:var(--card);border:1px solid var(--line);padding:18px;border-radius:16px}.card h3{margin:.2rem 0 .3rem}
.chips{display:flex;gap:10px;flex-wrap:wrap}.chips span{background:var(--card);border:1px solid var(--line);padding:8px 12px;border-radius:999px;color:var(--muted)}
.grid.two{grid-template-columns:1fr;gap:20px}@media(min-width:820px){.grid.two{grid-template-columns:1fr 1fr}}
.proj img{aspect-ratio: 16/9;object-fit:cover;border-radius:12px;border:1px solid var(--line)}
.proj figcaption{text-align:center;color:var(--muted);margin-top:6px}
.list{margin:.5rem 0 1rem 1.1rem;color:var(--muted)}
.certs{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:16px}
.certs figure{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px}
.certs figcaption{text-align:center;color:var(--muted);margin-top:6px}
.contacts{display:grid;grid-template-columns:1fr;gap:18px}
.map-embed iframe{width:100%;height:240px;border:0;filter:saturate(0.9) brightness(0.9)}
@media(min-width:940px){.contacts{grid-template-columns:1.2fr .8fr}.map-embed iframe{height:300px}}
.footer{padding:18px 0;background:#0a0d10}.footer-row{display:flex;justify-content:space-between;gap:12px;align-items:center}
.small{color:var(--muted);font-size:12px}

/* Video section */
.video-player{width:100%;max-height:70vh;border:1px solid var(--line);border-radius:14px;background:#000;display:block}
.yt-wrap{position:relative;width:100%;padding-bottom:56.25%;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.yt-wrap iframe{position:absolute;inset:0;width:100%;height:100%}


/* Larger logo */
.brand-logo{height:52px}
@media(min-width:940px){.brand-logo{height:72px}}

/* Hero video background */
.hero{overflow:hidden}
.hero-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:brightness(.38) saturate(.9);z-index:0}
.hero-bg{display:none} /* keep image as poster; video will play on capable devices */
.hero-inner{position:relative;z-index:1}


/* Hero sizing & overlay */
.hero{min-height:clamp(520px,72vh,860px)}
.hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg, rgba(11,13,16,0) 30%, rgba(11,13,16,.75) 100%);
  z-index:1;pointer-events:none}
.hero-inner{min-height:inherit;display:flex;align-items:flex-end}
.hero-video{pointer-events:none}

/* Section video frame */
.video-wrap{position:relative;width:100%;aspect-ratio:16/9;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#000}
.video-wrap .video-player{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
@media(max-width:640px){
  .video-wrap{aspect-ratio:16/9}
}