:root{--font-base:Arial,Helvetica,sans-serif;--color-bg:#ffffff;--color-text:#1a1a1a;--color-muted:#666666;--color-dark:#141414;--color-accent:#ff9000;--color-accent-hover:#e57f00;--color-light:#ffffff;--container:1320px;--radius:14px;--radius-sm:8px;--shadow:0 14px 30px rgba(0,0,0,0.12);--header-h:74px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-base);color:var(--color-text);background:var(--color-bg);line-height:1.65}img{max-width:100%;display:block}a{color:inherit;text-decoration:none}.container{width:min(100% - 2rem,var(--container));margin-inline:auto}.header{position:fixed;top:0;left:0;width:100%;z-index:30;background:rgba(20,20,20,0.35);backdrop-filter:blur(6px);transition:background-color .25s ease}.header.is-scrolled{background:rgba(20,20,20,0.92)}.header__inner{min-height:var(--header-h);display:flex;align-items:center;justify-content:space-between;gap:1rem}.logo{font-size:1.45rem;font-weight:700;letter-spacing:.05em}.logo__main{color:var(--color-light)}.logo__accent{color:var(--color-accent)}.burger{width:44px;height:44px;border:0;border-radius:var(--radius-sm);background:rgba(255,255,255,0.08);display:grid;place-content:center;gap:4px}.burger span{width:20px;height:2px;background:#fff;display:block}.nav{position:absolute;top:var(--header-h);left:0;right:0;display:none;flex-direction:column;background:#111;border-top:1px solid rgba(255,255,255,0.1)}.nav a{padding:.9rem 1rem;color:#fff;font-size:.95rem;text-transform:uppercase}.nav a:hover{color:var(--color-accent)}.nav.is-open{display:flex}.hero{position:relative;min-height:100svh;overflow:hidden;background:#000}.hero__slide{position:absolute;inset:0;opacity:0;z-index:1;pointer-events:none;transition:opacity .9s 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button{position:absolute;top:50%;transform:translateY(-50%);pointer-events:auto;width:40px;height:40px;border:0;border-radius:50%;background:rgba(255,255,255,0.22);color:#fff;font-size:1.1rem;opacity:.92;visibility:visible;z-index:11;cursor:pointer;transition:background-color .2s ease,opacity .2s ease}.hero__controls button:hover{background:rgba(255,255,255,0.32)}.hero__controls button:focus-visible{outline:2px solid #fff;outline-offset:2px}.hero__prev{left:12px}.hero__next{right:12px}.btn{display:inline-block;background:var(--color-accent);color:#fff;border:0;border-radius:999px;padding:.85rem 1.25rem;font-size:.95rem;text-transform:uppercase;letter-spacing:.04em}.btn:hover{background:var(--color-accent-hover)}.hero .btn{justify-self:center;width:auto}.section{padding:3.2rem 0}.section h2{margin:0 0 1.3rem;font-size:clamp(1.5rem,4vw,2.4rem);text-transform:uppercase;line-height:1.2}.section h2 span{color:var(--color-accent)}.intro{background:rgba(255,255,255,0.85) url('../img/architecture-left.png') no-repeat left top}.intro p{max-width:840px;margin:0;font-size:1.07rem}.cards{display:grid;grid-template-columns:1fr;gap:1rem}.card{background:#fff;border:1px solid rgba(0,0,0,0.08);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}.card h3{margin:1rem 1rem .55rem;text-transform:uppercase;font-size:1.08rem}.card p,.card ul{margin:0 1rem 1rem;color:#2a2a2a}.card ul{padding-left:1rem}.card a{display:inline-block;margin:0 1rem 1rem;color:var(--color-accent);font-weight:700}.gallery-block{background:var(--color-dark);color:#fff;padding-top:2.4rem;padding-bottom:2.4rem}.gallery{display:grid;grid-template-columns:1fr 1fr;gap:.65rem}.gallery__item{margin:0;padding:0;border:0;border-radius:var(--radius-sm);overflow:hidden;cursor:zoom-in}.gallery__item img{aspect-ratio:4 / 3;width:100%;object-fit:cover;transition:transform .35s ease}.gallery__item:hover img{transform:scale(1.05)}.stats{color:#fff;background:linear-gradient(rgba(0,0,0,.68),rgba(0,0,0,.68)),url('../img/hero-ceilings.jpg') center/cover fixed}.stats__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;text-align:center}.stats strong{display:block;color:var(--color-accent);font-size:clamp(1.8rem,4vw,3rem);line-height:1;margin-bottom:.4rem}.stats span{font-size:.9rem;text-transform:uppercase}.brands{color:#fff;background:linear-gradient(rgba(0,0,0,.74),rgba(0,0,0,.74)),url('../img/hero-walls.jpg') center/cover fixed}.cards--dark .card{background:rgba(255,255,255,0.05);border-color:rgba(255,255,255,0.13);color:#fff}.brand-card img{width:160px;height:56px;object-fit:contain;margin:0 auto .95rem}.brand-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:1.2rem 1rem 1.1rem}.brand-card h3{margin:0 0 .7rem;text-align:center}.brand-card ul{margin:0 0 1rem;padding-left:0;list-style-position:inside;color:#fff}.brand-card a{margin:auto 0 0}.cta{background:#0f0f0f;color:#fff}.cta__grid{display:grid;grid-template-columns:1fr;gap:1.3rem}.socials{display:flex;flex-wrap:wrap;gap:.7rem}.socials a{width:58px;height:58px;border-radius:50%;border:1px solid rgba(255,255,255,0.2);display:grid;place-items:center;font-weight:700;color:var(--color-accent);-webkit-tap-highlight-color:transparent}.socials a:hover{color:#fff;border-color:var(--color-accent);background:var(--color-accent)}.lead-form{position:relative;background:rgba(255,255,255,0.05);border:1px solid rgba(255,255,255,0.11);border-radius:var(--radius);padding:1rem}.lead-form h3{margin-top:0;text-transform:uppercase}.lead-form label{display:block;font-size:.9rem;margin-bottom:.8rem}.lead-form input{width:100%;margin-top:.35rem;padding:.75rem .8rem;border:1px solid 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ease}.lightbox.is-open img{transform:translateY(0) scale(1);opacity:1}.lightbox__close{position:absolute;top:1rem;right:1rem;width:40px;height:40px;border:0;border-radius:50%;background:rgba(255,255,255,0.2);color:#fff;font-size:1.2rem}.lightbox__prev,.lightbox__next{position:absolute;top:50%;transform:translateY(-50%);z-index:10000;pointer-events:auto;width:44px;height:44px;border:0;border-radius:50%;background:rgba(0,0,0,0.4);color:#fff;font-size:1.35rem;cursor:pointer}.lightbox__prev{left:10px}.lightbox__next{right:10px}.lightbox__close,.lightbox__prev,.lightbox__next{transition:background-color .2s ease,opacity .2s ease}.lightbox__close:hover,.lightbox__prev:hover,.lightbox__next:hover{background:rgba(255,255,255,0.34)}.lightbox.is-single .lightbox__prev,.lightbox.is-single .lightbox__next{display:none}@media (min-width:768px){.cards--3{grid-template-columns:repeat(3,minmax(0,1fr))}.stats__grid{grid-template-columns:repeat(4,minmax(0,1fr))}.cta__grid{grid-template-columns:1.2fr .9fr}}@media (min-width:992px){.burger{display:none}.nav{position:static;display:flex;flex-direction:row;background:transparent;border:0;gap:.65rem}.nav a{padding:.3rem .55rem;font-size:.84rem;letter-spacing:.04em}.hero__prev{left:20px}.hero__next{right:20px}}