*{box-sizing:border-box} html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,sans-serif;color:#151515;background:#fff;line-height:1.5}
.container{max-width:1140px;margin:0 auto;padding:0 16px}
.narrow{max-width:900px}
.center{text-align:center}
.mt24{margin-top:24px}
.muted{color:#555}

.header{position:sticky;top:0;z-index:20;background:rgba(0,0,0,.6);backdrop-filter:blur(4px)}
.row{display:flex;align-items:center;justify-content:space-between;min-height:72px}
.logo{color:#fff;text-decoration:none;font-weight:700}
.nav{display:flex;gap:18px;align-items:center}
.nav a{color:#fff;text-decoration:none}
.btn{border:2px solid #fff;padding:8px 12px;border-radius:8px}
.burger{display:none;background:none;border:none;color:#fff;font-size:26px}

.hero{min-height:100vh;background:url("../img/bg1.jpg") center/cover no-repeat}
.hero__overlay{min-height:100vh;background:linear-gradient(to bottom,rgba(0,0,0,.3),rgba(0,0,0,.6));display:flex;align-items:center}
.hero h1,.hero p{color:#fff}
.hero__uptitle{text-transform:uppercase;letter-spacing:.3px}

.section{padding:80px 0}
.gray{background:#f0f0f0}
h2{margin:0 0 24px}

.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.gallery img{width:100%;height:210px;object-fit:cover;border-radius:10px;cursor:pointer;transition:.2s}
.gallery img:hover{transform:scale(1.02)}
.more-link{display:inline-block;padding:12px 18px;border:1px solid #ddd;border-radius:10px;text-decoration:none;color:#111;background:#fff}

.steps{display:grid;gap:14px}
.steps article{background:#fff;border-radius:12px;padding:16px;border:1px solid #e6e6e6}

.box{background:#f5f5f5;border-radius:12px;padding:20px}

.config-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:center}
.mini-slider{position:relative;border-radius:12px;overflow:hidden}
.mini-slider img{width:100%;display:block;aspect-ratio:4/3;object-fit:cover}
.sl-btn{position:absolute;top:50%;transform:translateY(-50%);border:none;background:#fff;width:36px;height:36px;border-radius:50%;cursor:pointer}
.sl-btn.prev{left:10px}.sl-btn.next{right:10px}
.config-banner{max-width:100%;height:auto;border-radius:10px}

.why-list{padding-left:18px}
.why-list li{margin-bottom:10px}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px}
.card{background:#fff;border:1px solid #e8e8e8;border-radius:12px;padding:14px}
.card img{width:100%;height:180px;object-fit:cover;border-radius:8px}
.price{font-size:26px;font-weight:700;color:#1f5bff;margin:6px 0}

.footer{background:#1c1c1c;color:#fff;padding:80px 0}
.footer a{color:#fff}
.phone{font-size:28px;font-weight:700;margin:0}

.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);display:none;align-items:center;justify-content:center;z-index:99}
.lightbox.show{display:flex}
.lightbox img{max-width:92vw;max-height:90vh;border-radius:8px}
.lb-close{position:absolute;top:14px;right:16px;background:transparent;border:none;color:#fff;font-size:36px;cursor:pointer}
.lb-nav{position:absolute;top:50%;transform:translateY(-50%);border:none;background:rgba(255,255,255,.2);color:#fff;width:44px;height:44px;border-radius:50%;font-size:30px;cursor:pointer}
.lb-nav.prev{left:16px}.lb-nav.next{right:16px}

@media (max-width:900px){
  .burger{display:block}
  .nav{display:none;position:absolute;right:12px;top:72px;background:#111;border-radius:10px;padding:10px;flex-direction:column;align-items:flex-start}
  .nav.open{display:flex}
  .config-grid{grid-template-columns:1fr}
}