:root{
  --blue:#0A3A75;
  --blue-2:#155AA8;
  --blue-3:#EAF3FF;
  --ink:#172033;
  --muted:#5E6B7E;
  --line:#DCE7F5;
  --white:#fff;
  --shadow:0 18px 48px rgba(10,58,117,.14);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,'Helvetica Neue',sans-serif;color:var(--ink);background:#fff;line-height:1.55}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.topbar{background:var(--blue);color:#fff;font-size:14px}
.topbar .container{display:flex;justify-content:space-between;gap:20px;padding:10px 0;align-items:center}
.header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;padding:18px 0;gap:26px}
.logo{display:flex;gap:12px;align-items:center;font-weight:800;color:var(--blue);letter-spacing:.02em;text-transform:uppercase}
.logo-mark{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--blue),var(--blue-2));display:grid;place-items:center;color:#fff;font-size:20px;font-weight:900}
.logo small{display:block;color:var(--muted);font-weight:600;text-transform:none;letter-spacing:0;font-size:12px;margin-top:1px}
.menu{display:flex;gap:22px;align-items:center;font-weight:700;color:#26364D;font-size:15px}
.menu a{padding:8px 0;border-bottom:2px solid transparent}
.menu a.active,.menu a:hover{color:var(--blue);border-bottom-color:var(--blue)}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;padding:13px 22px;background:var(--blue);color:#fff;font-weight:800;border:1px solid var(--blue);box-shadow:0 10px 24px rgba(10,58,117,.18)}
.btn.secondary{background:#fff;color:var(--blue);box-shadow:none}
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#F7FBFF 0%,#EAF3FF 48%,#fff 100%);border-bottom:1px solid var(--line)}
.hero:before{content:"";position:absolute;right:-200px;top:-220px;width:620px;height:620px;border-radius:50%;background:rgba(21,90,168,.08)}
.hero .grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding:76px 0}
.eyebrow{display:inline-flex;gap:8px;align-items:center;padding:7px 12px;border-radius:999px;background:#fff;border:1px solid var(--line);color:var(--blue);font-weight:800;font-size:13px;text-transform:uppercase;letter-spacing:.06em}
h1{font-size:52px;line-height:1.08;margin:18px 0 20px;color:#0C2445;letter-spacing:-.025em}
.lead{font-size:20px;color:#435268;margin:0 0 30px;max-width:720px}
.hero-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
.hero-card img{border-radius:14px;border:1px solid var(--line)}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:22px}
.stat{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px}
.stat strong{display:block;font-size:27px;color:var(--blue)}
.stat span{font-size:13px;color:var(--muted);font-weight:700}
.section{padding:76px 0}
.section.alt{background:#F7FBFF;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-title{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:34px}
h2{font-size:38px;line-height:1.15;margin:0;color:#0C2445;letter-spacing:-.015em}
.section-title p{max-width:560px;color:var(--muted);margin:0;font-size:17px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:start}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:0 10px 30px rgba(10,58,117,.06)}
.card h3{margin:0 0 12px;font-size:21px;color:#0C2445}
.card p{margin:0;color:var(--muted)}
.card ul{margin:14px 0 0;padding-left:18px;color:#4B5970}
.card li{margin:8px 0}
.icon{width:46px;height:46px;border-radius:14px;background:var(--blue-3);color:var(--blue);display:grid;place-items:center;font-size:23px;margin-bottom:16px;font-weight:900}
.visual{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:#fff}
.visual figcaption{padding:13px 16px;color:#506078;font-size:14px;background:#fff}
.case-card{overflow:hidden;padding:0}
.case-card img{aspect-ratio: 4/3; object-fit:cover;width:100%}
.case-card .case-body{padding:22px}
.badge{display:inline-block;background:var(--blue-3);color:var(--blue);font-weight:800;border-radius:999px;padding:6px 10px;font-size:12px;margin-bottom:10px;text-transform:uppercase;letter-spacing:.04em}
.cta{background:linear-gradient(135deg,var(--blue),#062953);color:#fff;border-radius:28px;padding:42px;display:grid;grid-template-columns:1.2fr .8fr;gap:24px;align-items:center;box-shadow:var(--shadow)}
.cta h2{color:#fff}.cta p{color:#D8E8FF;margin:12px 0 0}.cta .btn{background:#fff;color:var(--blue);border-color:#fff}.cta .actions{justify-self:end;display:flex;gap:12px;flex-wrap:wrap}
.table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 10px 30px rgba(10,58,117,.06)}
.table th,.table td{text-align:left;padding:16px;border-bottom:1px solid var(--line);vertical-align:top}.table th{background:var(--blue);color:#fff}.table tr:last-child td{border-bottom:0}
.contact-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px}.contact-box{background:var(--blue);color:#fff;border-radius:var(--radius);padding:32px}.contact-box h3{font-size:26px;margin:0 0 20px}.contact-item{padding:16px 0;border-bottom:1px solid rgba(255,255,255,.18)}.contact-item:last-child{border-bottom:0}.contact-item span{display:block;color:#BFD7F5;font-size:13px;text-transform:uppercase;letter-spacing:.06em;font-weight:800}.contact-item a{font-size:20px;font-weight:800}
.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.input{width:100%;padding:14px 16px;border:1px solid #CAD9EA;border-radius:12px;margin-bottom:14px;font:inherit}.input:focus{outline:2px solid rgba(21,90,168,.2);border-color:var(--blue-2)}textarea.input{min-height:130px;resize:vertical}
.footer{background:#071D3A;color:#D9E8FA;padding:34px 0;margin-top:0}.footer .container{display:flex;justify-content:space-between;gap:20px;align-items:center}.footer b{color:#fff}.footer small{color:#9FB8D6}
.breadcrumb{padding:26px 0 0;color:var(--muted);font-weight:700}.breadcrumb a{color:var(--blue)}
.page-head{padding:48px 0 42px;background:linear-gradient(135deg,#F7FBFF,#fff);border-bottom:1px solid var(--line)}
.page-head h1{font-size:46px;margin:10px 0 14px}.page-head p{font-size:19px;color:var(--muted);max-width:850px;margin:0}.quote{border-left:5px solid var(--blue);padding:20px 24px;background:#fff;border-radius:0 16px 16px 0;color:#34445A;font-size:18px}

/* Контакты предприятий на странице кейсов */
.references-section .section-title{align-items:start}
.references-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.reference-card{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 10px 30px rgba(10,58,117,.06);min-height:255px;display:flex;flex-direction:column}
.reference-card:before{content:"";position:absolute;left:0;top:0;width:100%;height:5px;background:linear-gradient(90deg,var(--blue),var(--blue-2));border-radius:var(--radius) var(--radius) 0 0}
.reference-number{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:12px;background:var(--blue-3);color:var(--blue);font-weight:900;margin-bottom:14px}
.reference-card h3{margin:0 0 10px;font-size:19px;color:#0C2445;line-height:1.25;padding-right:4px}
.reference-card p{margin:0 0 14px;color:#4B5970}
.reference-card b{color:#172033}
.reference-location{color:var(--muted);font-weight:700;font-size:14px}
.reference-card a,.reference-card .phone-text{display:inline-block;margin-top:auto;color:var(--blue);font-size:18px;font-weight:900;text-decoration:underline;text-underline-offset:3px}
.reference-card a + br + a{margin-top:4px}
@media(max-width:1000px){.references-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:650px){.references-grid{grid-template-columns:1fr}.reference-card{min-height:auto}}

@media(max-width:900px){.hero .grid,.grid-2,.grid-3,.grid-4,.cta,.contact-wrap{grid-template-columns:1fr}.menu{display:none}.topbar .container,.footer .container{flex-direction:column;align-items:flex-start}.stats{grid-template-columns:1fr}h1{font-size:38px}.page-head h1{font-size:36px}h2{font-size:30px}.section{padding:54px 0}.cta .actions{justify-self:start}}

/* Раздел оборудования */
.equipment-models{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:stretch}
.equipment-model{display:flex;flex-direction:column;gap:22px;justify-content:space-between}
.equipment-model h3{font-size:26px;line-height:1.2;margin:0 0 12px;color:#0C2445}
.equipment-model p{font-size:16px}
.table.compact th,.table.compact td{padding:12px 14px;font-size:14px}
.t12-visual{grid-column:span 1}
.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.video-card{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.video-card video{width:100%;display:block;aspect-ratio:16/9;background:#071D3A}
.video-card figcaption{padding:14px 16px;color:#506078;font-size:14px;background:#fff}
@media(max-width:900px){.equipment-models,.video-grid{grid-template-columns:1fr}.t12-visual{grid-column:auto}}

/* Просмотр изображений из презентации */
.js-lightbox-image{cursor:zoom-in;transition:transform .2s ease, box-shadow .2s ease}
.js-lightbox-image:hover{transform:translateY(-2px);box-shadow:0 16px 36px rgba(10,58,117,.18)}
.js-lightbox-image:focus{outline:3px solid rgba(21,90,168,.35);outline-offset:3px}
.lightbox-open{overflow:hidden}
.image-lightbox{position:fixed;inset:0;z-index:1000;display:none;align-items:center;justify-content:center;padding:76px 28px 36px;background:rgba(7,29,58,.92);backdrop-filter:blur(8px)}
.image-lightbox.is-open{display:flex}
.image-lightbox__figure{margin:0;width:min(1120px,100%);max-height:100%;display:flex;flex-direction:column;align-items:center;gap:14px}
.image-lightbox__img{max-width:100%;max-height:calc(100vh - 170px);object-fit:contain;border-radius:14px;background:#fff;box-shadow:0 28px 80px rgba(0,0,0,.42)}
.image-lightbox__caption{color:#EAF3FF;text-align:center;font-size:15px;max-width:900px;line-height:1.45}
.image-lightbox__close,.image-lightbox__nav{position:absolute;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.12);color:#fff;border-radius:999px;display:grid;place-items:center;cursor:pointer;transition:background .2s ease, transform .2s ease}
.image-lightbox__close:hover,.image-lightbox__nav:hover{background:rgba(255,255,255,.24);transform:scale(1.04)}
.image-lightbox__close{right:24px;top:22px;width:48px;height:48px;font-size:34px;line-height:1}
.image-lightbox__nav{top:50%;transform:translateY(-50%);width:54px;height:54px;font-size:44px;line-height:1}
.image-lightbox__nav:hover{transform:translateY(-50%) scale(1.04)}
.image-lightbox__nav--prev{left:24px}.image-lightbox__nav--next{right:24px}
@media(max-width:700px){.image-lightbox{padding:70px 14px 28px}.image-lightbox__nav{top:auto;bottom:18px;width:46px;height:46px;font-size:36px}.image-lightbox__nav--prev{left:22px}.image-lightbox__nav--next{right:22px}.image-lightbox__img{max-height:calc(100vh - 210px)}}

/* Карточки моделей оборудования в едином стиле с K-series */
.model-showcase .lead{max-width:640px;margin-bottom:28px}
.model-showcase .table{margin-bottom:18px}
.visual-stack{display:grid;gap:18px}
.slim-card{padding:20px;box-shadow:0 8px 24px rgba(10,58,117,.05)}
.slim-card h3{font-size:20px;margin-bottom:8px}
.video-card a{color:var(--blue);font-weight:800;text-decoration:underline;text-underline-offset:3px}
.video-card video{aspect-ratio:9/16;max-height:620px;object-fit:contain}
@media(max-width:900px){.visual-stack{gap:16px}.video-card video{max-height:none}}

/* Страница заключений и встроенный просмотр PDF */
.document-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;align-items:stretch}
.document-card{display:grid;grid-template-columns:180px 1fr;gap:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);min-height:260px}
.document-thumb{margin:0;background:#F5F9FF;border:1px solid var(--line);border-radius:14px;overflow:hidden;align-self:start}
.document-thumb img{width:100%;aspect-ratio:3/4;object-fit:cover;object-position:top;background:#fff}
.document-info{display:flex;flex-direction:column;gap:12px}
.document-meta{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:13px;font-weight:800;text-transform:uppercase;letter-spacing:.04em}
.document-info h2{font-size:26px;margin:0;color:var(--blue)}
.document-info p{margin:0;color:#34445A}
.document-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:auto}
.btn.secondary{background:#fff;color:var(--blue);border:1px solid var(--blue)}
.evidence-list{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:26px}
.evidence-list .card{padding:22px}
.evidence-list strong{display:block;color:var(--blue);font-size:20px;margin-bottom:6px}
.pdf-viewer{position:fixed;inset:0;z-index:1200;display:none;background:rgba(7,29,58,.94);backdrop-filter:blur(8px);padding:22px}
.pdf-viewer.is-open{display:grid;grid-template-rows:auto 1fr auto;gap:14px}
.pdf-viewer-open{overflow:hidden}
.pdf-viewer__top{display:flex;align-items:center;justify-content:space-between;gap:16px;color:#fff;width:min(1180px,100%);margin:0 auto}
.pdf-viewer__title{font-weight:900;font-size:20px;line-height:1.25}
.pdf-viewer__counter{color:#BFD7F5;font-weight:800;margin-top:3px;font-size:14px}
.pdf-viewer__close{width:46px;height:46px;border-radius:999px;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.12);color:#fff;font-size:30px;cursor:pointer}
.pdf-viewer__stage{min-height:0;display:grid;place-items:center;width:min(1180px,100%);margin:0 auto;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);border-radius:18px;padding:12px}
.pdf-viewer__stage img{max-width:100%;max-height:calc(100vh - 190px);object-fit:contain;background:#fff;border-radius:10px;box-shadow:0 18px 60px rgba(0,0,0,.35)}
.pdf-viewer__controls{display:flex;align-items:center;justify-content:center;gap:12px;flex-wrap:wrap;width:min(1180px,100%);margin:0 auto}
.pdf-viewer__button,.pdf-viewer__link{border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.12);color:#fff;border-radius:999px;padding:12px 18px;font-weight:900;cursor:pointer;font:inherit}
.pdf-viewer__button:hover,.pdf-viewer__link:hover,.pdf-viewer__close:hover{background:rgba(255,255,255,.24)}
.pdf-viewer__button:disabled{opacity:.38;cursor:not-allowed}
.pdf-viewer__link{display:inline-flex;align-items:center;gap:8px;background:#fff;color:var(--blue);border-color:#fff}
@media(max-width:900px){.document-grid,.evidence-list{grid-template-columns:1fr}.document-card{grid-template-columns:1fr}.document-thumb{max-width:220px}.pdf-viewer{padding:14px}.pdf-viewer__stage img{max-height:calc(100vh - 220px)}}

/* Мобильная адаптация */
.menu-toggle{display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:14px;background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px;cursor:pointer;box-shadow:0 8px 24px rgba(10,58,117,.08)}
.menu-toggle span{display:block;width:21px;height:2px;background:var(--blue);border-radius:999px;transition:transform .2s ease, opacity .2s ease}
.nav.is-open .menu-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav.is-open .menu-toggle span:nth-child(2){opacity:0}
.nav.is-open .menu-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu-open{overflow:hidden}

.table-wrap{width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--radius)}
.card,.reference-card,.document-card,.contact-box,.form{overflow-wrap:anywhere}
.video-card video{width:100%;height:auto}

@media(max-width:1100px){
  .container{width:min(100% - 28px, 1180px)}
  .nav{position:relative;padding:12px 0;gap:14px}
  .logo{min-width:0;flex:1;gap:10px;font-size:14px;line-height:1.15}
  .logo-mark{width:38px;height:38px;border-radius:11px;font-size:18px;flex:0 0 auto}
  .logo small{font-size:11px;line-height:1.25}
  .menu-toggle{display:flex;flex:0 0 auto}
  .menu{display:none;position:absolute;left:14px;right:14px;top:calc(100% + 8px);z-index:50;background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 18px 50px rgba(7,29,58,.18);padding:10px;gap:0;font-size:16px;max-height:calc(100vh - 95px);overflow:auto}
  .nav.is-open .menu{display:grid;grid-template-columns:1fr}
  .menu a{display:flex;align-items:center;justify-content:space-between;padding:13px 14px;border-bottom:1px solid var(--line);border-radius:12px}
  .menu a:last-child{border-bottom:0}
  .menu a.active,.menu a:hover{background:var(--blue-3);border-bottom-color:transparent;color:var(--blue)}
  .topbar{font-size:13px}
  .topbar .container{align-items:flex-start}
  .hero .grid{gap:32px;padding:54px 0}
  .hero:before{right:-330px;top:-300px}
  .section-title{display:block}
  .section-title p{margin-top:14px;max-width:none}
  .cta{border-radius:22px;padding:30px}
}

@media(max-width:900px){
  .menu{display:none}
  .hero .grid,.grid-2,.grid-3,.grid-4,.cta,.contact-wrap,.equipment-models,.video-grid,.document-grid,.evidence-list{grid-template-columns:1fr}
  .topbar .container,.footer .container{flex-direction:column;align-items:flex-start}
  .stats{grid-template-columns:1fr}
  h1{font-size:38px}.page-head h1{font-size:36px}h2{font-size:30px}.section{padding:54px 0}.cta .actions{justify-self:start}
}

@media(max-width:640px){
  body{font-size:15px;line-height:1.55}
  .container{width:calc(100% - 24px)}
  .topbar .container{gap:6px;padding:8px 0}
  .topbar a{word-break:break-word}
  .header{top:0}
  .logo{font-size:12px;letter-spacing:0}
  .logo small{display:none}
  .logo-mark{width:34px;height:34px;font-size:16px;border-radius:10px}
  .menu-toggle{width:42px;height:42px;border-radius:12px}
  .menu{left:12px;right:12px;top:calc(100% + 6px);max-height:calc(100vh - 78px)}
  .hero .grid{padding:38px 0;gap:24px}
  h1{font-size:31px;line-height:1.12;margin:14px 0}
  .page-head{padding:28px 0 30px}
  .page-head h1{font-size:30px;line-height:1.12}
  .page-head p,.lead{font-size:16px}
  h2{font-size:25px}
  .section{padding:42px 0}
  .section-title{margin-bottom:22px}
  .grid-3,.grid-4{gap:14px}
  .card{padding:20px;border-radius:16px}
  .hero-card{padding:10px;border-radius:16px}
  .visual{border-radius:16px}
  .visual figcaption,.video-card figcaption{font-size:13px;padding:12px}
  .btn{width:100%;padding:12px 16px;text-align:center}
  .cta{padding:22px;border-radius:18px}.cta .actions{width:100%}.cta .actions .btn{width:100%}
  .table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch;box-shadow:none;border-radius:14px}
  .table th,.table td{padding:12px;min-width:170px;font-size:14px}
  .table.compact th,.table.compact td{padding:10px 12px;font-size:13px;min-width:150px}
  .contact-box,.form{padding:22px;border-radius:16px}
  .contact-item a{font-size:17px}
  .footer{padding:26px 0}.footer .container{gap:14px}
  .references-grid{grid-template-columns:1fr;gap:14px}.reference-card{padding:20px;min-height:auto}.reference-card a,.reference-card .phone-text{font-size:16px}
  .equipment-model h3{font-size:23px}.model-showcase .lead{margin-bottom:20px}.visual-stack{gap:14px}
  .video-card video{aspect-ratio:16/9;max-height:70vh;object-fit:contain}
  .document-card{grid-template-columns:1fr;padding:16px;gap:16px;min-height:auto}.document-thumb{max-width:180px}.document-info h2{font-size:22px}.document-actions{width:100%}
  .pdf-viewer{padding:10px}.pdf-viewer.is-open{gap:10px}.pdf-viewer__top{align-items:flex-start}.pdf-viewer__title{font-size:16px}.pdf-viewer__close{width:40px;height:40px;font-size:26px;flex:0 0 auto}.pdf-viewer__stage{border-radius:14px;padding:8px}.pdf-viewer__stage img{max-height:calc(100vh - 205px);border-radius:8px}.pdf-viewer__controls{display:grid;grid-template-columns:1fr 1fr;gap:8px}.pdf-viewer__link{grid-column:1 / -1;justify-content:center;order:3}.pdf-viewer__button,.pdf-viewer__link{padding:11px 12px;font-size:14px;text-align:center}
  .image-lightbox{padding:62px 10px 76px}.image-lightbox__close{right:12px;top:12px;width:42px;height:42px}.image-lightbox__caption{font-size:13px}.image-lightbox__img{max-height:calc(100vh - 185px);border-radius:10px}
}

@media(max-width:390px){
  .logo{max-width:245px}.menu a{padding:12px}.page-head h1,h1{font-size:28px}.btn{font-size:14px}.card h3{font-size:19px}
}
@media(max-width:900px){.nav.is-open .menu{display:grid;grid-template-columns:1fr}}