:root{--red:#EF4136;--red-d:#d2332a;--ink:#1B222A;--ink-2:#46515e;--mut:#7a8694;--bg:#fff;--bg-2:#F3F5F8;--line:#e3e7ec;--r:14px}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px 12px;z-index:99}
h1,h2,h3{line-height:1.2;letter-spacing:-.01em;margin:0 0 .6em}
h1{font-size:clamp(26px,3.6vw,40px);font-weight:800}
h2{font-size:clamp(22px,2.6vw,30px);font-weight:700}
h3{font-size:17px;font-weight:600}
/* header */
.hdr{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--line);z-index:20}
.hdr-in{display:flex;align-items:center;gap:20px;min-height:68px}
.logo img{height:34px;width:auto}
.nav{display:flex;gap:4px;flex:1;flex-wrap:wrap}
.nav a{text-decoration:none;font-weight:500;font-size:15px;padding:8px 12px;border-radius:8px;color:var(--ink-2)}
.nav a:hover,.nav a[aria-current]{background:var(--bg-2);color:var(--ink)}
.hdr-tel{font-weight:700;text-decoration:none;white-space:nowrap}
/* buttons */
.btn{display:inline-block;background:var(--red);color:#fff;text-decoration:none;font:inherit;font-weight:600;padding:13px 22px;border-radius:10px;border:0;cursor:pointer;transition:.15s;text-align:center}
.btn:hover{background:var(--red-d)}
.btn:disabled{opacity:.6;cursor:default}
.btn-sm{padding:9px 16px;font-size:14px}
.btn-block{display:block;width:100%}
.btn-ghost{background:transparent;border:1.5px solid #ffffff66}.btn-ghost:hover{background:#ffffff1a}
/* hero */
.hero{position:relative;isolation:isolate;background:#1B222A var(--bg) center/cover no-repeat;color:#fff;padding:96px 0}
.hero::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(18,23,29,.9) 0%,rgba(18,23,29,.78) 50%,rgba(18,23,29,.6) 100%)}
.hero-in>div{max-width:820px}
.hero h1{color:#fff}
.lead{font-size:18px;color:#c9d0d8;max-width:640px}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
/* sections */
.sec{padding:56px 0}.sec-alt{background:var(--bg-2)}
.sec.wrap{padding-left:20px;padding-right:20px}
.about p{max-width:860px;color:var(--ink-2);font-size:17px}
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.cat-card{display:flex;flex-direction:column;text-decoration:none;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.15s}
.cat-card:hover{border-color:var(--red);box-shadow:0 8px 28px #1b222a14;transform:translateY(-2px)}
.cat-img{background:#fff;border-bottom:1px solid var(--line)}
.cat-img img{width:100%;aspect-ratio:4/3;object-fit:contain}
.cat-b{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1}
.cat-b h3{margin-bottom:8px}
.cat-b p{color:var(--ink-2);margin:0 0 14px;font-size:15px;flex:1}
.cat-n{font-size:13px;color:var(--red);font-weight:700;text-transform:uppercase;letter-spacing:.05em}
.more{color:var(--red);font-weight:600;font-size:14px}
/* cards */
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;align-items:stretch}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.15s}
.card:hover{border-color:var(--red);box-shadow:0 8px 24px #1b222a14}
.card-link{display:flex;flex-direction:column;text-decoration:none;flex:1}
.card-img{aspect-ratio:1/1;background:#fff;border-bottom:1px solid var(--line);padding:14px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:contain}
.card-img img.ph,.prod-img img.ph{width:55%;height:auto;opacity:.18;filter:grayscale(1)}
.card-b{padding:12px 16px 8px;display:flex;flex-direction:column;gap:8px;flex:1}
.card-b h3{font-size:15px;margin:0;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;min-height:3.9em;line-height:1.3}
.card-f{padding:8px 16px 16px}
.tag{display:inline-block;font-size:12px;font-weight:600;color:var(--ink-2);background:var(--bg-2);padding:2px 9px;border-radius:99px;align-self:flex-start;margin:0;white-space:nowrap;max-width:100%;overflow:hidden;text-overflow:ellipsis}
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.svc{border-left:3px solid var(--red);padding:6px 0 6px 16px}.svc p{margin:0;color:var(--ink-2);font-size:15px}
.faq details{border-bottom:1px solid var(--line);padding:14px 0}
.faq summary{cursor:pointer;font-weight:600;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--red);font-size:24px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq p{margin:10px 0 0;color:var(--ink-2);max-width:820px}
.faq p a{color:var(--red);text-underline-offset:2px}
.others{margin-top:26px;color:var(--ink-2)}
.chip{display:inline-block;background:#fff;border:1px solid var(--line);border-radius:99px;padding:5px 14px;text-decoration:none;font-weight:500;margin:4px 6px 4px 0}
.chip:hover{border-color:var(--red)}
/* wa fab */
.wa-fab svg{flex:none}.wa-fab{position:fixed;right:18px;bottom:18px;z-index:30;display:flex;align-items:center;gap:8px;background:#25D366;color:#fff;text-decoration:none;font-weight:700;padding:13px 18px;border-radius:99px;box-shadow:0 6px 20px #0004;transition:.15s}
.wa-fab:hover{background:#1fb858;transform:translateY(-2px)}
/* pages */
.crumbs{padding-top:18px;padding-bottom:10px}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;font-size:14px;color:var(--mut)}
.crumbs li+li::before{content:"/";margin-right:6px}
.crumbs a{text-decoration:none}.crumbs a:hover{color:var(--red)}
.crumbs-dark ol{color:#9aa5b1}.crumbs-dark a:hover{color:#fff}.crumbs-dark{padding-bottom:22px}
.page-h{padding-top:24px;padding-bottom:12px}
.meta{color:var(--mut);font-size:14px;margin:0 0 12px}
.toc{display:flex;flex-wrap:wrap;gap:8px}
.toc a{text-decoration:none;font-size:14px;font-weight:500;background:var(--bg-2);border-radius:99px;padding:6px 14px}
.toc a:hover{background:var(--ink);color:#fff}.toc i{font-style:normal;color:var(--mut);margin-left:4px}.toc a:hover i{color:#cbd3db}
.sub{padding:20px 0 34px;scroll-margin-top:84px}
.prod{padding-bottom:50px}
.prod-top{display:grid;grid-template-columns:420px 1fr;gap:40px;margin:10px 0 36px;align-items:start}
.prod-img{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center}
.prod-img img{width:100%;height:100%;object-fit:contain}
.prod-sum{color:var(--ink-2)}
.kv{display:grid;grid-template-columns:120px 1fr;gap:6px 16px;margin:18px 0}.kv dt{color:var(--mut)}.kv dd{margin:0;font-weight:500}
.prod-form{background:var(--bg-2);border-radius:var(--r);padding:22px}.prod-form h2{font-size:19px}
.prod-body{max-width:860px;margin-bottom:30px}.prod-body h3{margin-top:1.4em}.prod-body p{color:var(--ink-2)}
.spec{width:100%;border-collapse:collapse;margin:14px 0 30px;font-size:15px}
.spec th,.spec td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.spec th{width:48%;font-weight:500;color:var(--ink-2);background:var(--bg-2)}
.contact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:20px}
/* footer */
.ftr{background:#12171d;color:#aab3bd;padding-top:44px;font-size:15px}
.ftr-in{display:grid;grid-template-columns:1.4fr 1fr 1.4fr;gap:32px;padding-bottom:30px}
.ftr h2{font-size:15px;color:#fff;text-transform:uppercase;letter-spacing:.05em}
.ftr ul{list-style:none;margin:0;padding:0}.ftr li{margin:6px 0}
.ftr a{text-decoration:none}.ftr a:hover{color:#fff}
.ftr address{font-style:normal;line-height:1.8}
.ftr-logo{filter:brightness(0) invert(1);margin-bottom:12px}
.ftr-bot{border-top:1px solid #ffffff1a;padding-top:18px;padding-bottom:26px;font-size:13px}
/* forms: same look as zenith-i.kz */
.lead-form{display:flex;flex-direction:column;gap:16px}
.lead-form input[type=text],.lead-form input[type=tel]{width:100%;height:48px;font:inherit;font-size:16px;padding:0 12px;border:1px solid #E2E8F0;border-radius:8px;background:#fff;color:#314158;outline:none}
.lead-form input::placeholder{color:#90A1B9}
.lead-form input:focus{border-color:var(--red)}
.lf-btn{width:100%;height:44px;border:0;border-radius:8px;background:var(--red);color:#fff;font:inherit;font-size:14px;font-weight:500;cursor:pointer;transition:.15s}
.lf-btn:hover{background:var(--red-d)}
.lf-btn:disabled{opacity:.5;cursor:default}
.f-ok{font-weight:600;color:#157347;background:#e8f6ee;border-radius:8px;padding:14px 16px;margin:0;text-align:center}
.hp{position:absolute;left:-9999px;height:0;overflow:hidden;margin:0}
dialog{border:0;border-radius:16px;padding:32px;width:min(384px,calc(100vw - 32px));max-width:384px;background:#fff;color:#314158;box-shadow:none}
dialog::backdrop{background:rgba(0,0,0,.5)}
dialog h3,.form-card h3{font-size:20px;font-weight:600;text-align:center;margin:0 0 8px;color:#314158;line-height:1.4}
.dlg-p{margin:0 0 24px;color:#62748E;text-align:center}
.dlg-prod{margin:-12px 0 20px;text-align:center;font-size:14px;font-weight:600;color:#314158}
.form-card{max-width:384px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px}
/* category hero with background image */
.cat-hero{position:relative;color:#fff;padding:0 0 64px;background:#1B222A var(--bg) right center/cover no-repeat;isolation:isolate}
.cat-hero::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(18,23,29,.94) 0%,rgba(18,23,29,.86) 45%,rgba(18,23,29,.72) 100%)}
.cat-hero-in{max-width:760px}
.cat-hero h1{color:#fff}
.cat-hero .lead{color:#fff;opacity:1}
.crumbs-dark ol{color:#e3e8ee}
@media(max-width:1080px){.hdr-tel{display:none}}
@media(max-width:980px){.grid{grid-template-columns:repeat(3,1fr)}.cat-grid,.svc-grid,.contact-grid{grid-template-columns:1fr 1fr}.prod-top{grid-template-columns:1fr}.ftr-in{grid-template-columns:1fr 1fr}.prod-img{max-width:440px}}
@media(max-width:640px){.grid{grid-template-columns:1fr 1fr;gap:12px}.cat-grid,.svc-grid,.contact-grid,.ftr-in{grid-template-columns:1fr}.hdr-in{flex-wrap:wrap;gap:8px;padding-top:8px;padding-bottom:8px}.nav{order:3;flex-basis:100%}.hdr-btn{margin-left:auto}.hero{padding:56px 0;background-position:70% center}.card-b h3{font-size:14px}.card-f{padding:6px 12px 12px}.card-b{padding:10px 12px 6px}.wa-fab span{display:none}.wa-fab{padding:14px}.cat-hero{background-position:70% center;padding-bottom:40px}}

.burger{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.burger span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.hdr.open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hdr.open .burger span:nth-child(2){opacity:0}
.hdr.open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
@media(max-width:820px){
.burger{display:flex}
.hdr-in{flex-wrap:wrap;gap:0;padding-top:0;padding-bottom:0;min-height:64px}
.hdr-in .logo{margin:12px 0}
.nav,.hdr-tel,.hdr-btn{display:none!important}
.hdr.open .nav{display:flex!important;order:3;flex-basis:100%;flex-direction:column;gap:2px;padding:4px 0 8px;border-top:1px solid var(--line)}
.hdr.open .nav a{padding:12px 8px;font-size:16px}
.hdr.open .hdr-tel{display:block!important;order:4;flex-basis:100%;padding:10px 8px;font-size:18px}
.hdr.open .hdr-btn{display:block!important;order:5;flex-basis:100%;margin:0 0 14px;text-align:center;padding:14px}
}

/* seo text, subpages, blog */
.seo{max-width:860px}
.seo h2{margin-top:32px}
.seo p{line-height:1.7;color:var(--ink-2)}
.subpromo{margin:6px 0 12px}
.subpromo a{font-weight:600}
table.variants{width:100%}
table.variants thead th{text-align:left;background:var(--bg-2)}
table.variants td{vertical-align:middle}
.lead-dark{font-size:18px;color:var(--ink-2);margin:0 0 24px}
.post-list{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.post{display:flex;flex-direction:column;gap:8px;text-decoration:none;color:inherit;border:1px solid var(--line);border-radius:14px;padding:22px;background:#fff;transition:box-shadow .2s,border-color .2s}
.post:hover{box-shadow:0 8px 24px rgba(0,0,0,.08);border-color:#cfd5db}
.post time,.art-meta{font-size:14px;color:var(--ink-2)}
.post h2{font-size:20px;margin:0;line-height:1.3}
.post p{margin:0;color:var(--ink-2);line-height:1.55}
.post .more{margin-top:auto;font-weight:600;color:var(--red,#EF4136)}
.article{max-width:820px;padding-bottom:40px}
.article h1{margin-bottom:8px}
.article h2{margin-top:34px}
.article p,.article li{line-height:1.7}
.art-lead{font-size:19px;line-height:1.6;color:var(--ink);margin:12px 0 8px}
.article .rel{padding-left:20px;line-height:1.9}
.chk{padding-left:20px;line-height:1.7}
.cta-inline{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:center;margin:32px 0;padding:24px;border-radius:14px;background:var(--bg-2);border:1px solid var(--line)}
.cta-inline h3{margin:0 0 6px}
.cta-inline p{margin:0;color:var(--ink-2)}
@media(max-width:820px){.post-list{grid-template-columns:1fr}.cta-inline{grid-template-columns:1fr}}
/* mobile: compact lead dialog pinned to top so the keyboard doesn't cover fields */
@media (max-width:820px){
  dialog#lead{margin:10px auto auto;padding:18px 16px 16px;border-radius:14px;width:calc(100vw - 20px);max-height:calc(100dvh - 20px);overflow:auto}
  dialog#lead[open]{display:flex;flex-direction:column}
  dialog#lead h3{font-size:18px;margin:0 0 10px}
  dialog#lead .dlg-p{margin:0 0 12px;font-size:14px;line-height:1.35}
  dialog#lead .lead-form{gap:10px;order:1}
  dialog#lead .lead-form input[type=text],dialog#lead .lead-form input[type=tel]{height:46px}
  dialog#lead .dlg-prod{order:2;margin:12px 0 0;font-size:13px;font-weight:400;color:#62748E}
  .form-card{padding:20px 16px}
}
/* CTA band on category pages */
.cta-band{padding:8px 0 48px}
.cta-band-in{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:28px 32px;border-radius:16px;background:linear-gradient(135deg,#1B222A,#2b3642);color:#fff}
.cta-band-in h2{margin:0 0 4px;font-size:24px;color:#fff}
.cta-band-in p{margin:0;color:#c9d0d8}
.cta-band-in .btn{flex:none}
.sec-alt+.cta-band{padding-top:48px}
@media(max-width:820px){.cta-band-in{flex-direction:column;align-items:stretch;text-align:center;padding:22px 18px}.cta-band-in h2{font-size:21px}}
/* blog article */
.art-hero{position:relative;isolation:isolate;color:#fff;background:#1B222A var(--bg) center/cover;padding-bottom:44px;margin-bottom:28px}
.art-hero::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,rgba(27,34,42,.94),rgba(27,34,42,.72))}
.art-hero h1{color:#fff;margin:10px 0 12px;max-width:760px}
.art-hero .art-meta{color:#c9d0d8;margin:0}
.art-tag{display:inline-block;background:var(--red);color:#fff;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;border-radius:6px}
.article .art-lead{font-size:20px;line-height:1.6;padding:20px 24px;margin:0 0 24px;background:#FFF1F0;border-left:5px solid var(--red);border-radius:0 12px 12px 0}
.a-toc{display:flex;flex-direction:column;gap:2px;padding:18px 22px;margin-bottom:12px;background:var(--bg-2);border-radius:14px}
.a-toc strong{font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--mut);margin-bottom:6px}
.a-toc a{display:flex;gap:12px;align-items:baseline;text-decoration:none;padding:5px 0;font-weight:500}
.a-toc a:hover{color:var(--red)}
.a-toc b{flex:none;width:24px;height:24px;border-radius:50%;background:#fff;color:var(--red);font-size:13px;display:grid;place-items:center;border:1px solid var(--line)}
.a-sec{position:relative;margin:28px 0;padding:6px 0 6px 64px;scroll-margin-top:90px}
.a-sec+.a-sec{border-top:1px solid var(--line);padding-top:28px}
.a-num{position:absolute;left:0;top:8px;width:44px;height:44px;border-radius:12px;background:var(--red);color:#fff;font-weight:700;font-size:20px;display:grid;place-items:center}
.a-sec+.a-sec .a-num{top:30px}
.a-sec h2{margin:0 0 12px;font-size:24px;line-height:1.3}
.a-sec p{margin:0 0 14px}
.a-sec p strong,.a-sec p b{background:linear-gradient(transparent 60%,#FFE1DE 60%)}
.a-spec{margin:34px 0;padding:24px 26px;border-radius:14px;background:#1B222A;color:#e6ebf0}
.a-spec h2{margin:0 0 12px;color:#fff;font-size:22px}
.a-spec p{margin:0 0 12px;color:#d3dae1}
.a-spec a{color:#fff}
.a-chk{margin:34px 0;padding:24px 26px;border-radius:14px;background:#EAF6EF;border:1px solid #cfe9db}
.a-chk h2{margin:0 0 12px;font-size:22px;color:#157347}
.a-chk .chk{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.a-chk .chk li{position:relative;padding-left:34px}
.a-chk .chk li::before{content:"✓";position:absolute;left:0;top:1px;width:24px;height:24px;border-radius:50%;background:#157347;color:#fff;font-size:14px;display:grid;place-items:center}
.a-faq{margin:34px 0}
.article .rel{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.article .rel a{display:block;padding:10px 16px;border:1px solid var(--line);border-radius:999px;text-decoration:none;font-weight:500;background:#fff}
.article .rel a:hover{border-color:var(--red);color:var(--red)}
.post{border-top:4px solid var(--red)}
.post:nth-child(3n+2){border-top-color:#1B222A}
.post:nth-child(3n){border-top-color:#157347}
@media(max-width:820px){.a-sec{padding-left:0;padding-top:58px}.a-sec+.a-sec{padding-top:70px}.a-num{top:0!important;width:38px;height:38px;font-size:17px}.a-sec+.a-sec .a-num{top:22px!important}.article .art-lead{font-size:18px;padding:16px 18px}.a-sec h2{font-size:21px}}