/* ==========================================================================
   ТРИАЛХОЛОД — общие стили
   Палитра: холодный "морозный" верх + тёплый акцент манометра (гейдж-красный)
   ========================================================================== */
 
:root{
  --paper:      #FAFBFC;
  --paper-2:    #F1F5F8;
  --ink:        #16283D;
  --steel:      #52657A;
  --steel-lt:   #8695A6;
  --frost:      #D6EAF3;
  --frost-2:    #BFE3F0;
  --gauge-blue: #1C7EA5;
  --gauge-blue-dk:#125A78;
  --gauge-red:  #D4501E;
  --gauge-red-dk:#B23F14;
  --line:       #E1E8ED;
  --white:      #FFFFFF;
 
  --f-display: 'Oswald', 'Arial Narrow', sans-serif;
  --f-body: 'Manrope', 'Segoe UI', sans-serif;
  --f-mono: 'JetBrains Mono', 'Courier New', monospace;
 
  --radius: 2px;
  --container: 1180px;
}
 
*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--f-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{ max-width:100%; display:block; }
a{ color:inherit; }
h1,h2,h3,h4{
  font-family:var(--f-display);
  font-weight:600;
  letter-spacing:.01em;
  margin:0 0 .5em;
  color:var(--ink);
}
p{ margin:0 0 1em; color:var(--steel); }
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}
 
:focus-visible{
  outline:3px solid var(--gauge-blue);
  outline-offset:2px;
}
 
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}
 
/* ---------- eyebrow / labels ---------- */
.eyebrow{
  font-family:var(--f-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--gauge-blue-dk);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px; height:1px;
  background:var(--gauge-red);
  display:inline-block;
}
 
/* ---------- gauge tick divider (signature motif) ---------- */
.gauge-divider{
  display:flex;
  align-items:center;
  gap:6px;
  height:22px;
  margin:56px 0;
  color:var(--steel-lt);
  overflow:hidden;
}
.gauge-divider span{
  width:1px; height:8px; background:var(--line); flex:0 0 auto;
}
.gauge-divider span:nth-child(5n){ height:16px; background:var(--gauge-blue); opacity:.5;}
.gauge-divider .mid{
  flex:1 1 auto; height:1px; background:var(--line);
}
 
/* ---------- header ---------- */
.site-header{
  position:sticky; top:0; z-index:50;
  background:rgba(250,251,252,.92);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.site-header .container{
  display:flex; align-items:center; justify-content:space-between;
  height:78px;
  gap:20px;
}
.brand{
  display:flex; align-items:center; gap:12px;
  font-family:var(--f-display);
  font-size:22px;
  font-weight:600;
  letter-spacing:.02em;
  text-decoration:none;
  color:var(--ink);
  white-space:nowrap;
}
.brand-mark{
  width:36px; height:36px;
  flex:0 0 auto;
}
.brand small{
  display:block;
  font-family:var(--f-mono);
  font-size:10px;
  letter-spacing:.12em;
  color:var(--gauge-red);
  font-weight:500;
  text-transform:uppercase;
}
nav.main-nav{
  display:flex; align-items:center; gap:2px;
}
nav.main-nav a{
  font-size:14.5px;
  text-decoration:none;
  color:var(--steel);
  padding:10px 14px;
  border-radius:var(--radius);
  transition:color .15s ease, background .15s ease;
  white-space:nowrap;
}
nav.main-nav a:hover{ color:var(--ink); background:var(--paper-2); }
nav.main-nav a.active{ color:var(--gauge-blue-dk); font-weight:700; }
.header-right{ display:flex; align-items:center; gap:16px; }
.header-phone{
  font-family:var(--f-mono);
  font-size:15px;
  font-weight:500;
  text-decoration:none;
  color:var(--ink);
  white-space:nowrap;
}
.header-phone small{ display:block; font-size:10px; color:var(--steel-lt); font-weight:400; }
 
.nav-toggle{ display:none; }
 
/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:var(--f-body);
  font-weight:700;
  font-size:15px;
  padding:15px 28px;
  border-radius:var(--radius);
  border:1px solid transparent;
  cursor:pointer;
  text-decoration:none;
  transition:transform .12s ease, box-shadow .12s ease, background .15s ease;
  white-space:nowrap;
}
.btn:active{ transform:translateY(1px); }
.btn-primary{
  background:var(--gauge-red);
  color:#fff;
  box-shadow:0 1px 0 var(--gauge-red-dk);
}
.btn-primary:hover{ background:var(--gauge-red-dk); }
.btn-outline{
  background:transparent;
  border-color:var(--ink);
  color:var(--ink);
}
.btn-outline:hover{ background:var(--ink); color:#fff; }
.btn-ghost{
  background:var(--paper-2);
  color:var(--ink);
}
.btn-ghost:hover{ background:var(--frost); }
.btn-sm{ padding:10px 18px; font-size:13.5px; }
.btn-block{ width:100%; }
 
/* ---------- hero ---------- */
.hero{
  padding:76px 0 88px;
  position:relative;
  overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero .container{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(34px,4.4vw,54px);
  line-height:1.06;
  text-transform:uppercase;
  margin-bottom:22px;
}
.hero h1 em{
  font-style:normal;
  color:var(--gauge-blue-dk);
}
.hero .lead{
  font-size:18px;
  color:var(--steel);
  max-width:46ch;
  margin-bottom:32px;
}
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:36px; }
.hero-stats{
  display:flex; gap:34px; flex-wrap:wrap;
}
.hero-stats div b{
  display:block;
  font-family:var(--f-display);
  font-size:30px;
  color:var(--ink);
  line-height:1;
}
.hero-stats div span{
  font-size:12.5px; color:var(--steel-lt); letter-spacing:.02em;
}
 
/* gauge illustration */
.gauge-wrap{ display:flex; justify-content:center; }
.gauge-readout{
  text-align:center;
  font-family:var(--f-mono);
  margin-top:10px;
  color:var(--steel);
  font-size:13px;
  letter-spacing:.06em;
}
.gauge-readout b{ color:var(--gauge-red); }
 
/* ---------- sections ---------- */
section{ padding:88px 0; }
.section-head{ max-width:640px; margin-bottom:48px; }
.section-head h2{ font-size:clamp(26px,3vw,36px); text-transform:uppercase; }
.section-head p{ font-size:16.5px; }
.section-alt{ background:var(--paper-2); }
 
/* ---------- trust block ---------- */
.trust-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
@media (max-width:900px){
  .trust-grid{ grid-template-columns:repeat(2,1fr); }
}
@media (max-width:560px){
  .trust-grid{ grid-template-columns:1fr; }
}
.trust-card{
  background:var(--paper);
  padding:32px 28px;
}
.trust-card--graphic{
  display:flex; align-items:center; gap:32px;
  padding:34px 40px;
  border:1px solid var(--line);
  border-top:none;
  background:
    repeating-linear-gradient(135deg, var(--paper-2) 0 2px, var(--paper) 2px 14px);
}
.trust-card--graphic svg{ width:120px; flex:0 0 auto; }
.trust-card--graphic .graphic-caption{ }
.trust-card--graphic .graphic-caption .eyebrow{ margin-bottom:8px; }
.trust-card--graphic .graphic-caption p{ margin:0; font-size:14.5px; max-width:46ch; }
.trust-card .num{
  font-family:var(--f-mono);
  font-size:12px;
  color:var(--gauge-red);
  margin-bottom:14px;
}
.trust-card h3{ font-size:18px; margin-bottom:10px; }
.trust-card p{ font-size:14.5px; margin:0; }
 
/* ---------- team ---------- */
.team-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:28px;
}
.team-card{
  background:var(--white);
  border:1px solid var(--line);
  padding:30px;
  display:flex; gap:20px; align-items:flex-start;
}
.team-avatar{
  width:64px; height:64px; flex:0 0 auto;
  border-radius:50%;
  background:var(--frost);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--f-display); font-size:22px; color:var(--gauge-blue-dk);
}
.team-card h3{ font-size:19px; margin-bottom:2px; }
.team-role{ font-size:13px; color:var(--gauge-red); font-weight:700; letter-spacing:.03em; text-transform:uppercase; margin-bottom:10px; }
.team-card p{ font-size:14.5px; margin-bottom:8px; }
.team-tags{ display:flex; gap:8px; flex-wrap:wrap; margin-top:10px;}
.team-tags span{
  font-family:var(--f-mono);
  font-size:11px;
  background:var(--paper-2);
  border:1px solid var(--line);
  padding:4px 9px;
  color:var(--steel);
}
 
/* ---------- services preview cards ---------- */
.service-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:24px;
}
.service-card{
  border:1px solid var(--line);
  background:var(--white);
  padding:28px;
  transition:border-color .15s ease, transform .15s ease;
}
.service-card:hover{ border-color:var(--gauge-blue); transform:translateY(-3px); }
.service-icon{
  width:42px; height:42px;
  margin-bottom:18px;
  color:var(--gauge-blue-dk);
}
.service-card h3{ font-size:18px; margin-bottom:8px; }
.service-card p{ font-size:14.5px; margin-bottom:14px; }
.service-card a.more{
  font-size:13px; font-weight:700; color:var(--gauge-red);
  text-decoration:none;
}
 
/* ---------- catalog page ---------- */
.cat-section{ padding:0 0 64px; }
.cat-section-title{
  display:flex; align-items:baseline; gap:16px;
  border-bottom:2px solid var(--ink);
  padding-bottom:14px; margin-bottom:28px;
}
.cat-section-title .idx{ font-family:var(--f-mono); color:var(--gauge-red); font-size:14px; }
.cat-section-title h2{ font-size:24px; margin:0; text-transform:uppercase; }
.cat-list{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.cat-item{
  background:var(--white);
  padding:22px 24px;
}
.cat-item h4{ font-size:16px; margin-bottom:6px; display:flex; justify-content:space-between; gap:10px; align-items:baseline;}
.cat-item .price{ font-family:var(--f-mono); font-size:13px; color:var(--gauge-blue-dk); white-space:nowrap; font-weight:700;}
.cat-item p{ font-size:14px; margin:0; }
 
/* ---------- portfolio ---------- */
.portfolio-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:26px;
}
.portfolio-card{
  border:1px solid var(--line);
  background:var(--white);
  overflow:hidden;
}
.portfolio-media{
  aspect-ratio:4/3;
  background:linear-gradient(135deg,var(--frost) 0%, var(--paper-2) 60%);
  display:flex; align-items:center; justify-content:center;
  position:relative;
  border-bottom:1px solid var(--line);
}
.portfolio-media svg{ width:46%; height:46%; color:var(--gauge-blue-dk); opacity:.75; }

.portfolio-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

.portfolio-tag{
  position:absolute; top:12px; left:12px;
  font-family:var(--f-mono); font-size:10.5px; letter-spacing:.06em;
  background:var(--ink); color:#fff;
  padding:4px 9px; text-transform:uppercase;
}
.portfolio-body{ padding:18px 20px; }
.portfolio-body h4{ font-size:15.5px; margin-bottom:4px; }
.portfolio-body p{ font-size:13.5px; margin:0; }
.portfolio-note{
  font-size:14px; color:var(--steel-lt); margin-top:36px; border-top:1px dashed var(--line); padding-top:20px;
}
 
/* ---------- FAQ / accordion ---------- */
.faq-list{ border-top:1px solid var(--line); }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  background:none; border:none; text-align:left; cursor:pointer;
  padding:22px 4px;
  font-family:var(--f-body); font-weight:700; font-size:16px; color:var(--ink);
}
.faq-q .plus{
  font-family:var(--f-mono); color:var(--gauge-red); font-size:20px; flex:0 0 auto;
  transition:transform .2s ease;
}
.faq-item.open .plus{ transform:rotate(45deg); }
.faq-a{
  max-height:0; overflow:hidden; transition:max-height .25s ease;
}
.faq-a p{ padding:0 4px 22px; font-size:14.5px; max-width:70ch; }
 
/* ---------- articles ---------- */
.article-grid{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:28px;
}
.article-card{
  border:1px solid var(--line); background:var(--white);
  padding:0;
  display:flex; flex-direction:column;
}
.article-top{
  background:var(--paper-2);
  padding:20px 24px 16px;
  border-bottom:1px solid var(--line);
}
.article-top .eyebrow{ margin-bottom:8px; }
.article-body{ padding:20px 24px 24px; flex:1; display:flex; flex-direction:column;}
.article-body h3{ font-size:18px; margin-bottom:10px; }
.article-body p{ font-size:14.5px; }
.read-toggle{
  margin-top:auto;
  background:none; border:none; cursor:pointer;
  color:var(--gauge-blue-dk); font-weight:700; font-size:13.5px; padding:0;
  text-align:left;
}
.article-full{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.article-card.open .article-full{ max-height:900px; }
 
/* ---------- form ---------- */
.form-wrap{
  display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:start;
}
.form-panel{
  background:var(--ink);
  color:#fff;
  padding:40px;
}
.form-panel h2{ color:#fff; font-size:26px; text-transform:uppercase; }
.form-panel p{ color:#C6D2DD; }
.form-panel ul{ list-style:none; padding:0; margin:26px 0 0; }
.form-panel li{
  display:flex; gap:12px; align-items:flex-start;
  font-size:14.5px; color:#C6D2DD; margin-bottom:16px;
}
.form-panel li svg{ width:20px; height:20px; flex:0 0 auto; color:var(--gauge-red); margin-top:1px; }
.form-panel .contact-line{ margin-top:30px; padding-top:24px; border-top:1px solid #2A3E52; font-family:var(--f-mono); font-size:14px;}
.form-panel .contact-line a{ color:#fff; text-decoration:none; }
 
.card-form{
  background:var(--white);
  border:1px solid var(--line);
  padding:36px;
}
.field{ margin-bottom:18px; }
.field label{
  display:block; font-size:12.5px; font-weight:700; letter-spacing:.03em;
  text-transform:uppercase; color:var(--steel); margin-bottom:7px;
}
.field input, .field select, .field textarea{
  width:100%;
  font-family:var(--f-body);
  font-size:15px;
  padding:13px 14px;
  border:1px solid var(--line);
  background:var(--paper);
  color:var(--ink);
  border-radius:var(--radius);
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--gauge-blue);
  background:#fff;
}
.field textarea{ resize:vertical; min-height:90px; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-note{ font-size:12.5px; color:var(--steel-lt); margin-top:14px; }
.form-success{
  display:none;
  border:1px solid var(--gauge-blue);
  background:var(--frost);
  color:var(--gauge-blue-dk);
  padding:16px 18px;
  font-size:14.5px;
  font-weight:600;
  margin-bottom:18px;
}
.form-success.show{ display:block; }
.form-success.form-error{
  border-color:var(--gauge-red);
  background:#FBE7E0;
  color:var(--gauge-red-dk);
}
 
/* ---------- payment / footer info strip ---------- */
.info-strip{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--paper-2);
}
.info-strip .container{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:1px; background:var(--line);
}
.info-item{
  background:var(--paper-2);
  padding:26px 4px;
  display:flex; gap:14px; align-items:flex-start;
}
.info-item svg{ width:26px; height:26px; flex:0 0 auto; color:var(--gauge-red); }
.info-item h4{ font-size:14.5px; margin-bottom:4px; }
.info-item p{ font-size:13px; margin:0; }
 
/* ---------- footer ---------- */
footer.site-footer{
  background:var(--ink);
  color:#B7C4D1;
  padding:56px 0 28px;
}
.footer-grid{
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:36px;
  border-bottom:1px solid #2A3E52;
}
.footer-grid h4{ color:#fff; font-size:13px; letter-spacing:.06em; text-transform:uppercase; margin-bottom:16px; font-family:var(--f-body); }
.footer-brand{ font-family:var(--f-display); font-size:22px; color:#fff; margin-bottom:12px; }
.footer-grid p, .footer-grid a{ font-size:14px; color:#B7C4D1; text-decoration:none; line-height:1.7; }
.footer-grid ul{ list-style:none; padding:0; margin:0; }
.footer-grid li{ margin-bottom:9px; }
.footer-grid a:hover{ color:#fff; }
.footer-bottom{
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  padding-top:22px;
  font-size:12.5px; color:#7186997;
  color:#7B8FA3;
}
 
/* ---------- page hero (inner pages) ---------- */
.page-hero{
  padding:56px 0 48px;
  border-bottom:1px solid var(--line);
  background:var(--paper-2);
}
.page-hero h1{ font-size:clamp(28px,4vw,42px); text-transform:uppercase; margin-bottom:10px;}
.page-hero p{ font-size:16px; max-width:60ch; }
.breadcrumb{
  font-family:var(--f-mono); font-size:12px; color:var(--steel-lt);
  margin-bottom:18px;
}
.breadcrumb a{ color:var(--steel-lt); text-decoration:none; }
.breadcrumb a:hover{ color:var(--gauge-blue-dk); }
 
/* ---------- responsive ---------- */
@media (max-width: 980px){
  .hero .container{ grid-template-columns:1fr; }
  .gauge-wrap{ order:-1; max-width:280px; margin:0 auto; }
  .form-wrap{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width: 760px){
  nav.main-nav{
    position:fixed; inset:78px 0 0 0;
    background:var(--paper);
    flex-direction:column; align-items:stretch;
    padding:16px;
    transform:translateX(100%);
    transition:transform .25s ease;
    overflow-y:auto;
  }
  nav.main-nav.open{ transform:translateX(0); }
  nav.main-nav a{ padding:16px 10px; border-bottom:1px solid var(--line); font-size:16px; }
  .nav-toggle{
    display:flex; flex-direction:column; gap:5px; justify-content:center;
    width:36px; height:32px; background:none; border:none; cursor:pointer;
  }
  .nav-toggle span{ height:2px; background:var(--ink); display:block; }
  .header-phone{ display:none; }
  .field-row{ grid-template-columns:1fr; }
  .footer-grid{ grid-template-columns:1fr; }
  section{ padding:56px 0; }
  .trust-card--graphic{ flex-direction:column; text-align:center; padding:28px 24px; }
}