/* ===== BASE ===== */
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif;
  color:#0f172a;background:#fff;line-height:1.6;
}
img{max-width:100%;display:block}
a{color:#0ea5e9;text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(1200px,92%);margin:0 auto}

/* ===== PREHEADER ===== */
.preheader{background:#0ea5e9;color:#e6f6ff;font-size:.85rem}
.preheader .container{padding:6px 0}

/* ===== HEADER ===== */
.header{position:sticky;top:0;z-index:50;background:#ffffff;box-shadow:0 6px 20px rgba(2,6,23,.06)}
.header__wrap{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.logo{display:flex;align-items:center;gap:12px}
.logo img{height:40px}
.logo__text{display:flex;flex-direction:column}
.logo__text strong{color:#0ea5e9;font-size:1.1rem}
.logo__text small{color:#475569;letter-spacing:.03em}
.nav{display:flex;gap:22px;font-weight:600}
.nav a{color:#0f172a}
.nav a:hover{color:#0ea5e9;text-decoration:none}
.burger{display:none;flex-direction:column;gap:4px;background:none;border:0}
.burger span{display:block;width:22px;height:2px;background:#0f172a}

/* ===== HERO ===== */
.hero{position:relative;height:80vh;min-height:520px;overflow:hidden}
.hero__slide{position:absolute;inset:0;opacity:0;transition:opacity .6s ease}
.hero__slide--active{opacity:1}
.hero__bg{width:100%;height:100%;object-fit:cover;filter:contrast(1.05) saturate(1.05)}
.hero__content{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;gap:18px;color:#fff;text-shadow:0 10px 30px rgba(0,0,0,.6)}
.hero__content h1{font-size:clamp(28px,4vw,52px);margin:0}
.hero__content p{max-width:720px;margin:0}
.hero__actions{display:flex;gap:12px;margin-top:8px}
.hero__ctrl{background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.5);color:#fff;padding:6px 10px;border-radius:8px}
.hero__ctrl:hover{background:rgba(255,255,255,.25)}
.btn{display:inline-block;padding:10px 18px;border-radius:10px;font-weight:700}
.btn--primary{background:#0ea5e9;color:#fff}
.btn--primary:hover{background:#0284c7}
.btn--ghost{border:2px solid #fff;color:#fff}

/* ===== SECTIONS ===== */
.section{padding:72px 0}
.section--gray{background:#f8fafc}
.section--dark{background:#0b1220;color:#e2e8f0}
.section__title{font-size:clamp(24px,3vw,34px);margin:0 0 8px}
.section__subtitle{color:#64748b;margin-bottom:26px}

/* ===== ABOUT ===== */
.about__grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
.list{margin:14px 0 0;padding-left:18px}
.list li{margin:6px 0}
.about__card{background:linear-gradient(135deg,#0ea5e9,#0284c7);color:#fff;border-radius:16px;padding:24px}
.kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;text-align:center}
.kpi__num{font-weight:800;font-size:28px}
.kpi__label{opacity:.9}

/* ===== PRODUCTS ===== */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-top:18px}
.card{background:#ffffff;border:1px solid #e2e8f0;border-radius:14px;padding:18px;display:flex;flex-direction:column;gap:8px;box-shadow:0 10px 25px rgba(2,6,23,.04)}
.card__icon{font-size:28px}
.card__title{margin:0;color:#0f172a}
.card__text{margin:0;color:#475569}
.card__link{margin-top:auto;font-weight:700}

/* ===== ADVANTAGES ===== */
.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:20px}
.feature{display:flex;gap:12px;background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:16px}
.feature__icon{font-size:28px}
.feature__text h4{margin:0}

/* ===== NEWS ===== */
.news{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.news__item{border:1px solid #e2e8f0;border-radius:14px;padding:16px;background:#fff}
.news__item time{display:block;color:#64748b;font-size:.9rem}

/* ===== CONTACTS ===== */
.contacts__grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
.contacts__list{list-style:none;padding:0;margin:10px 0 0}
.contacts__list li{margin:6px 0}
.form{background:#0f172a;border:1px solid #1f2937;border-radius:14px;padding:18px}
.form h3{margin:0 0 10px}
.form label{display:block;margin:10px 0}
.form span{display:block;margin-bottom:6px}
.form input,.form textarea{width:100%;padding:10px;border-radius:8px;border:1px solid #334155;background:#0b1220;color:#e2e8f0}
.form input:focus,.form textarea:focus{outline:none;border-color:#0ea5e9;box-shadow:0 0 0 3px rgba(14,165,233,.2)}
.form__success{margin-top:10px;color:#22c55e}

/* ===== FOOTER ===== */
.footer{background:#000;color:#a3a3a3}
.footer__wrap{display:flex;align-items:center;justify-content:space-between;padding:20px 0}
.footer__logo img{height:32px}
.footer__tagline{color:#e5e7eb}
.footer__up{background:#111827;color:#fff;padding:8px 12px;border-radius:10px}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px){
  .nav{display:none}
  .burger{display:flex}
  .about__grid{grid-template-columns:1fr}
  .contacts__grid{grid-template-columns:1fr}
}