:root{
  --ink:#101820; --steel:#54616e; --paper:#f5f6f7; --white:#ffffff;
  --line:#dde2e7; --accent:#3a5cfc; --accent-dark:#2949e6; --navy:#070d33;
  --mono:'IBM Plex Mono',monospace; --sans:'Inter','Noto Sans Georgian',sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.7;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 24px}
header{position:sticky;top:0;z-index:50;background:rgba(245,246,247,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:12px}
.logo img{height:34px;width:auto;display:block}
.logo small{font-family:var(--mono);font-size:10px;color:var(--steel);letter-spacing:.12em;text-transform:uppercase;border-left:1px solid var(--line);padding-left:12px}
.nav-links{display:flex;gap:26px;align-items:center}
.nav-links > a, .nav-links .has-sub > a{font-size:15px;font-weight:500;color:var(--steel);transition:color .15s;display:inline-flex;align-items:center;gap:6px}
.nav-links > a:hover,.nav-links > a:focus-visible,.nav-links .has-sub > a:hover{color:var(--ink)}
.nav-links > a.active,.nav-links .has-sub > a.active{color:var(--ink);font-weight:600}
.has-sub{position:relative}
.has-sub .caret{width:8px;height:8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px)}
.sub{display:none;position:absolute;top:100%;left:-16px;padding-top:10px;min-width:260px;z-index:60}
.sub-inner{background:var(--white);border:1px solid var(--line);box-shadow:0 14px 30px rgba(7,13,51,.10);display:flex;flex-direction:column}
.sub a{padding:13px 18px;font-size:14px;color:var(--steel);border-bottom:1px solid var(--line)}
.sub a:last-child{border-bottom:0}
.sub a:hover{color:var(--ink);background:var(--paper)}
.has-sub:hover .sub,.has-sub:focus-within .sub{display:block}
.lang{display:flex;gap:2px;border:1px solid var(--line);background:var(--white)}
.lang button{font-family:var(--mono);font-size:11px;letter-spacing:.08em;padding:7px 10px;border:0;background:transparent;cursor:pointer;color:var(--steel)}
.lang button.active{background:var(--ink);color:var(--white)}
.burger{display:none;background:none;border:1px solid var(--line);width:42px;height:42px;cursor:pointer;position:relative}
.burger span,.burger span::before,.burger span::after{position:absolute;left:10px;right:10px;height:2px;background:var(--ink);content:"";transition:transform .2s}
.burger span{top:20px}.burger span::before{top:-7px}.burger span::after{top:7px}
.eyebrow{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);display:flex;align-items:center;gap:12px;margin-bottom:22px}
.eyebrow::before{content:"";width:34px;height:1px;background:currentColor}
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 26px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:background .15s,border-color .15s,color .15s}
.btn-primary{background:var(--accent);color:var(--white)}
.btn-primary:hover{background:var(--accent-dark)}
.btn-ghost{border-color:rgba(255,255,255,.28);color:var(--white)}
.btn-ghost:hover{border-color:var(--white)}
.btn-outline{border-color:var(--line);color:var(--ink);background:var(--white)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
section{padding:88px 0}
.sec-head{margin-bottom:48px;max-width:640px}
.sec-head h2{font-size:clamp(26px,3.2vw,36px);font-weight:700;line-height:1.2;letter-spacing:-.01em;margin:14px 0 14px}
.sec-head p{color:var(--steel)}
.std{display:flex;gap:8px;flex-wrap:wrap}
.std span{font-family:var(--mono);font-size:11px;border:1px solid var(--line);padding:5px 10px;color:var(--steel);background:var(--paper)}
/* hero */
.hero{background:var(--navy);color:var(--white);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:56px 56px;pointer-events:none}
.hero .wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding-top:88px;padding-bottom:88px;position:relative}
.hero .eyebrow{color:#7b93ff}
.hero h1{font-size:clamp(32px,4.6vw,52px);line-height:1.12;font-weight:700;letter-spacing:-.02em;margin-bottom:6px}
/* hero rotating service name */
.hero-rotate{position:relative;height:2.8rem;margin:0 0 22px;overflow:hidden}
.hero-rotate-item{position:absolute;top:0;left:0;font-family:var(--mono);font-size:clamp(18px,2.4vw,28px);font-weight:500;color:#7b93ff;letter-spacing:.05em;opacity:0;transform:translateY(10px);transition:opacity .45s ease,transform .45s ease;pointer-events:none;white-space:nowrap}
.hero-rotate-item.active{opacity:1;transform:translateY(0);pointer-events:auto}
.hero-rotate-item.exiting{opacity:0;transform:translateY(-10px)}
.hero-rotate-static{display:none;font-family:var(--mono);font-size:clamp(14px,1.8vw,20px);font-weight:500;color:#7b93ff;letter-spacing:.05em;line-height:2.8rem}
@media(prefers-reduced-motion:reduce){.hero-rotate{height:auto;overflow:visible}.hero-rotate-item{display:none!important}.hero-rotate-static{display:block}}
@media(max-width:520px){.hero-rotate{height:3rem}}
.hero p.lead{color:#aebbc7;font-size:17px;max-width:520px;margin-bottom:34px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap}
.gauge-card{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.12);padding:34px 30px;max-width:380px;justify-self:end;width:100%}
.gauge-card .g-top{display:flex;justify-content:space-between;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:#8b9aa8;margin-bottom:18px}
.gauge-svg{width:100%;height:auto}
.g-reading{display:flex;align-items:baseline;gap:8px;justify-content:center;margin-top:6px}
.g-reading b{font-family:var(--mono);font-size:44px;font-weight:500;color:var(--white)}
.g-reading span{font-family:var(--mono);color:#5b78ff;font-size:16px}
.g-note{text-align:center;font-size:12.5px;color:#8b9aa8;margin-top:10px}
.g-cal{text-align:center;font-family:var(--mono);font-size:10px;color:rgba(139,154,168,.55);margin-top:5px;letter-spacing:.04em}
/* service cards */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc{background:var(--white);border:1px solid var(--line);padding:0;display:flex;flex-direction:column;gap:0;position:relative;overflow:hidden;transition:border-color .15s}
.svc::before{content:"";position:absolute;top:0;left:0;width:46px;height:4px;background:var(--accent)}
.svc:hover{border-color:var(--accent)}
.svc h3{font-size:19px;font-weight:700;line-height:1.25;letter-spacing:-.01em}
.svc .tag{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--steel)}
.svc p{color:var(--steel);font-size:14.5px;flex:1}
.svc .more{color:var(--accent);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:8px}
.svc .more::after{content:"→"}
.svc-img{width:100%;height:200px;display:block;object-fit:cover}
.svc-body{display:flex;flex-direction:column;flex:1;padding:28px 30px 30px;gap:14px}
/* products section */
#products{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.prod{border:1px solid var(--line);padding:28px 24px;background:var(--paper);transition:border-color .15s}
.prod:hover{border-color:var(--accent)}
.prod .num{font-family:var(--mono);font-size:11px;color:var(--accent);letter-spacing:.12em;display:block;margin-bottom:14px}
.prod h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.prod p{font-size:13.5px;color:var(--steel)}
.prod-note{margin-top:30px;font-size:14px;color:var(--steel)}
.prod-note a{color:var(--accent);font-weight:600;border-bottom:1px solid currentColor}
/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.about-grid p{color:var(--steel);margin-bottom:16px}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line)}
.fact{background:var(--white);padding:26px 24px}
.fact b{display:block;font-size:15px;margin-bottom:6px}
.fact span{font-size:13.5px;color:var(--steel)}
/* contact */
#contact{background:var(--navy);color:var(--white)}
#contact .sec-head h2{color:var(--white)}
#contact .sec-head p{color:#aebbc7}
#contact .eyebrow{color:#7b93ff}
.contact-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:22px}
.c-card{border:1px solid rgba(255,255,255,.15);padding:30px 26px;display:flex;flex-direction:column;gap:8px;transition:border-color .15s;background:rgba(255,255,255,.03)}
.c-card:hover{border-color:var(--accent)}
.c-card .c-label{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:#8b9aa8}
.c-card .c-value{font-size:14px;font-weight:700;overflow-wrap:anywhere}
.c-card .c-hint{font-size:13px;color:#8b9aa8}
/* footer */
footer{background:var(--navy);color:#8b9aa8;border-top:1px solid rgba(255,255,255,.1);padding:26px 0;font-size:13px}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:center}
/* service detail pages */
.page-hero{background:var(--navy);color:var(--white);position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);background-size:56px 56px;pointer-events:none}
.page-hero .wrap{padding-top:100px;padding-bottom:80px;position:relative;max-width:1140px}
.crumbs{font-family:var(--mono);font-size:12px;color:#8b9aa8;margin-bottom:26px;display:flex;gap:10px;flex-wrap:wrap}
.crumbs a:hover{color:var(--white)}
.page-hero .eyebrow{color:#7b93ff}
.page-hero h1{font-size:clamp(28px,3.8vw,44px);line-height:1.12;font-weight:700;letter-spacing:-.015em;margin-bottom:18px;max-width:900px}
.page-hero p.lead{color:#aebbc7;font-size:17px;max-width:820px;margin-bottom:30px}
.detail-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:start}
.detail-grid h2{font-size:24px;font-weight:700;line-height:1.2;margin-bottom:16px;letter-spacing:-.01em}
.detail-grid p{color:var(--steel);margin-bottom:14px;font-size:15.5px}
.aud{display:flex;flex-direction:column;gap:1px;background:var(--line);border:1px solid var(--line)}
.aud div{background:var(--white);padding:16px 20px;font-size:14.5px;display:flex;align-items:center;gap:14px}
.aud div::before{content:"";width:12px;height:2px;background:var(--accent);flex:none}
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{background:var(--white);border:1px solid var(--line);padding:26px 22px;position:relative}
.step::before{counter-increment:s;content:counter(s,decimal-leading-zero);font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.12em;display:block;margin-bottom:14px}
.step b{display:block;font-size:15px;margin-bottom:8px}
.step span{font-size:13.5px;color:var(--steel)}
.deliv{background:var(--white);border:1px solid var(--line);padding:34px 30px}
.deliv h2{font-size:20px;font-weight:700;line-height:1.2;margin-bottom:18px}
/* Unified section-heading size on inner pages (service/product detail) —
   .page-hero ~ section targets only siblings of the page hero, not homepage */
.page-hero ~ section .sec-head h2,
.page-hero ~ section .deliv h2{font-size:24px;letter-spacing:-.01em;margin-bottom:16px}
.deliv ul{list-style:none;display:flex;flex-direction:column;gap:12px;font-size:14.5px}
.deliv ul li{padding-left:24px;position:relative;color:var(--steel)}
.deliv ul li::before{content:"";position:absolute;left:0;top:9px;width:12px;height:2px;background:var(--accent)}
.cta-band{background:var(--navy);color:var(--white)}
.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding-top:56px;padding-bottom:56px}
.cta-band h2{font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.2;letter-spacing:-.01em}
.cta-band p{color:#aebbc7;margin-top:6px}
/* pricing module */
.pricing-booking-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px;align-items:stretch}
.pricing-card,.booking-card{background:var(--white);border:1px solid var(--line);padding:34px 30px;height:100%;box-sizing:border-box}
.pricing-card-title,.booking-card-title{font-size:20px;font-weight:700;line-height:1.2;letter-spacing:-.01em;margin:0 0 20px}
.booking-card form{display:flex;flex-direction:column}
.booking-card form .btn{margin-top:24px;align-self:flex-start}
.pricing-label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:10px}
.pricing-select{width:100%;padding:13px 16px;border:1px solid var(--line);font-size:15px;font-family:var(--sans);color:var(--ink);background:var(--white);cursor:pointer;margin-bottom:28px}
.pricing-select:focus{outline:2px solid var(--accent);outline-offset:2px}
.pricing-result{display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:12px}
.pricing-result-main{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.pricing-result-label{font-size:15px;color:var(--steel)}
.pricing-result-value{font-size:38px;font-weight:800;color:var(--accent);font-family:var(--mono);letter-spacing:-.02em}
.cur-toggle{display:flex;gap:2px;border:1px solid var(--line)}
.cur-btn{font-family:var(--mono);font-size:11px;letter-spacing:.08em;padding:7px 12px;border:0;background:var(--white);cursor:pointer;color:var(--steel);font-weight:500;transition:background .12s,color .12s}
.cur-btn.active{background:var(--accent);color:var(--white)}
.cur-btn:hover:not(.active){background:var(--paper);color:var(--ink)}
.cur-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.booking-form{margin-top:0}
.booking-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:24px}
.booking-field{display:flex;flex-direction:column;gap:6px}
.booking-field-full{grid-column:1/-1}
.booking-label{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--steel)}
.booking-input{border:1px solid var(--line);padding:10px 14px;font-family:var(--sans);font-size:14px;color:var(--ink);background:var(--white);outline:none;width:100%;box-sizing:border-box;transition:border-color .12s,color .12s}
.booking-input:focus{border-color:var(--accent)}
.booking-textarea{resize:vertical;min-height:88px}
.booking-success{margin-top:0}
.booking-success p{color:var(--steel);margin:0}
.booking-error{margin-top:16px}
.booking-error p{color:#c0392b;font-size:14px;margin:0;line-height:1.5}
.rate-note{font-size:12px;color:var(--steel);line-height:1.5;margin-bottom:16px}
section[id]{scroll-margin-top:76px}
.pricing-note{font-size:13px;color:var(--steel);line-height:1.65;margin-bottom:24px}
/* product catalogue & detail pages */
.cat-filter{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:40px}
.cat-btn{font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;padding:9px 16px;border:1px solid var(--line);background:var(--white);cursor:pointer;color:var(--steel);transition:background .15s,border-color .15s,color .15s}
.cat-btn:hover,.cat-btn.active{background:var(--accent);border-color:var(--accent);color:var(--white)}
.cat-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.pcat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.pcard{background:var(--white);border:1px solid var(--line);display:flex;flex-direction:column;transition:border-color .15s,transform .15s}
.pcard:hover{border-color:var(--accent);transform:translateY(-2px)}
.pcard-img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block}
.pcard-img-ph{width:100%;aspect-ratio:4/3;background:var(--paper);display:flex;align-items:center;justify-content:center}
.pcard-body{padding:24px;flex:1;display:flex;flex-direction:column;gap:10px}
.pcard-cat{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.pcard-name{font-size:17px;font-weight:800;letter-spacing:-.01em;line-height:1.25}
.pcard-desc{font-size:13.5px;color:var(--steel);flex:1;line-height:1.6}
.pcard-foot{display:flex;align-items:center;justify-content:space-between;margin-top:14px;padding-top:14px;border-top:1px solid var(--line)}
.pcard-code{font-family:var(--mono);font-size:11px;color:var(--steel)}
.pcard-link{color:var(--accent);font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:6px;transition:gap .15s}
.pcard-link::after{content:"→"}
.pcard-link:hover,.pcard-link:focus-visible{gap:10px}
.pcard-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.badge-new{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;background:var(--accent);color:var(--white);padding:3px 8px}
.badge-out{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;background:var(--steel);color:var(--white);padding:3px 8px}
.prod-detail-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:start}
.prod-main-img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--paper);display:block}
.prod-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:10px}
.prod-gallery-img{width:100%;aspect-ratio:1;object-fit:cover;background:var(--paper);cursor:pointer;border:2px solid transparent;transition:border-color .15s;display:block}
.prod-gallery-img:hover,.prod-gallery-img:focus-visible{border-color:var(--accent)}
.prod-info{display:flex;flex-direction:column;gap:28px}
.prod-brand{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--steel)}
.prod-code{font-family:var(--mono);font-size:12px;color:var(--steel);margin-top:2px}
.prod-full-desc{color:var(--steel);font-size:15px;line-height:1.7;white-space:pre-wrap}
.spec-table{width:100%;border-collapse:collapse;margin-top:12px}
.spec-table tr{border-bottom:1px solid var(--line)}
.spec-table tr:last-child{border-bottom:0}
.spec-table td{padding:11px 0;font-size:14px;vertical-align:top}
.spec-table td:first-child{color:var(--steel);width:45%;padding-right:16px}
.spec-table td:last-child{font-weight:600}
.dl-list{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.dl-item{display:flex;align-items:center;gap:14px;padding:13px 16px;border:1px solid var(--line);background:var(--white);text-decoration:none;color:inherit;transition:border-color .15s}
.dl-item:hover,.dl-item:focus-visible{border-color:var(--accent)}
.dl-label{flex:1;font-size:14px;font-weight:500}
.dl-lang{font-family:var(--mono);font-size:11px;color:var(--steel)}
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.rel-card{background:var(--white);border:1px solid var(--line);padding:20px;display:flex;flex-direction:column;gap:10px;transition:border-color .15s}
.rel-card:hover{border-color:var(--accent)}
.rel-card-img{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--paper);display:block;margin-bottom:4px}
.rel-card-name{font-size:14px;font-weight:700;line-height:1.3}
.rel-card-link{color:var(--accent);font-weight:600;font-size:13px;display:inline-flex;align-items:center;gap:5px;margin-top:auto;transition:gap .15s}
.rel-card-link::after{content:"→"}
.rel-card-link:hover{gap:9px}
/* responsive */
@media(max-width:900px){
  .hero .wrap{grid-template-columns:1fr;padding-top:60px;padding-bottom:60px}
  .page-hero .wrap{padding-top:80px;padding-bottom:60px}
  .gauge-card{justify-self:start;max-width:420px}
  .svc-grid{grid-template-columns:1fr}
  .svc-img{height:180px}
  .about-grid,.detail-grid,.pricing-booking-grid{grid-template-columns:1fr}
  .prod-grid{grid-template-columns:1fr 1fr}
  .contact-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr 1fr}
  section{padding:64px 0}
  .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--white);flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-links > a,.has-sub > a{padding:16px 24px;border-top:1px solid var(--line);font-size:16px}
  .has-sub{display:flex;flex-direction:column}
  .has-sub .caret{display:none}
  .sub{display:block;position:static;padding:0;min-width:0}
  .sub-inner{border:0;box-shadow:none;background:var(--paper)}
  .sub a{padding-left:44px}
  .pcat-grid{grid-template-columns:1fr 1fr}
  .prod-detail-grid{grid-template-columns:1fr}
  .related-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:520px){.prod-grid,.steps,.booking-grid,.pcat-grid,.related-grid{grid-template-columns:1fr}.page-hero .wrap{padding-top:72px;padding-bottom:48px}.booking-card form .btn{width:100%;align-self:stretch}}