:root {
  --navy: #06213d;
  --navy-2: #0b416f;
  --blue: #087fce;
  --cyan: #20b5eb;
  --orange: #ff5b18;
  --amber: #ff9d1f;
  --ink: #10243d;
  --muted: #66768a;
  --line: #dbe7f1;
  --soft: #f3f8fc;
  --white: #fff;
  --shadow: 0 18px 50px rgba(6, 33, 61, .14);
  --shadow-strong: 0 24px 70px rgba(6, 33, 61, .24);
  --radius: 8px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Open Sans", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
svg { width: 1.2em; height: 1.2em; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.container { width: min(1180px, calc(100% - 32px)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

.topbar {
  color: rgba(255,255,255,.9);
  background: linear-gradient(110deg, #04182d, #0b416f 60%, #06213d);
  font-size: 14px;
}
.topbar-inner { min-height: 40px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.topbar-item { display: inline-flex; align-items: center; gap: 8px; }
.topbar svg { color: #71cef4; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid rgba(219,231,241,.9);
  backdrop-filter: blur(14px);
}
.nav-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; flex: 0 0 auto; }
.brand img { width: 220px; height: 62px; object-fit: contain; object-position: left center; }
.menu { display: flex; align-items: center; gap: 2px; padding: 5px; border: 1px solid var(--line); border-radius: 999px; background: #f8fbfe; }
.menu a { padding: 9px 14px; border-radius: 999px; font: 700 14px/1.2 Montserrat, sans-serif; transition: .2s ease; }
.menu a:hover, .menu a:focus-visible { color: white; background: var(--navy-2); }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.lang-switch { display: inline-flex; align-items: center; gap: 5px; }
.lang-link {
  height: 42px;
  min-width: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0 10px;
  border: 1px solid #c7def1;
  border-radius: 999px;
  background: white;
  font: 800 13px/1 Montserrat, sans-serif;
  box-shadow: 0 8px 22px rgba(6,33,61,.08);
}
.flag { width: 27px; height: 18px; flex: 0 0 auto; border: 1px solid rgba(6,33,61,.16); border-radius: 3px; box-shadow: 0 2px 5px rgba(6,33,61,.14); }
.flag-ru { background: linear-gradient(to bottom, #fff 0 33.33%, #2455a4 33.33% 66.66%, #df3d4b 66.66%); }
.flag-az { background: linear-gradient(to bottom, #16a7de 0 33.33%, #e83f4f 33.33% 66.66%, #29a55a 66.66%); }
.btn {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 12px 20px;
  border: 0;
  border-radius: 999px;
  color: white;
  background: linear-gradient(135deg, var(--orange), var(--amber));
  box-shadow: 0 13px 30px rgba(255,91,24,.28);
  font: 800 14px/1.2 Montserrat, sans-serif;
  transition: transform .2s ease, box-shadow .2s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(255,91,24,.35); }
.btn-secondary { color: white; border: 1px solid rgba(255,255,255,.35); background: rgba(255,255,255,.12); backdrop-filter: blur(8px); box-shadow: none; }
.menu-toggle { display: none; width: 44px; height: 44px; border: 1px solid var(--line); border-radius: 50%; background: white; color: var(--navy); cursor: pointer; }

.hero {
  position: relative;
  min-height: 680px;
  display: flex;
  align-items: center;
  color: white;
  overflow: hidden;
  background: #06213d url("real-ac-repair.jpg") center/cover no-repeat;
}
.hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(3,22,41,.97) 0%, rgba(4,35,65,.9) 43%, rgba(4,35,65,.2) 78%, rgba(4,35,65,.06) 100%); }
.hero::after { content: ""; position: absolute; inset: 0; opacity: .18; background-image: linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(90deg, #000, transparent 65%); }
.hero-inner { position: relative; z-index: 2; width: 100%; padding: 92px 0 108px; }
.hero-copy { max-width: 700px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 8px 13px; border-radius: 999px; color: white; background: rgba(255,91,24,.22); font: 900 12px/1 Montserrat, sans-serif; text-transform: uppercase; }
.eyebrow svg { color: #ffbd68; }
h1, h2, h3, h4 { margin: 0; font-family: Montserrat, sans-serif; letter-spacing: 0; }
h1 { max-width: 820px; margin-top: 18px; font-size: clamp(40px, 6vw, 72px); line-height: 1.02; font-weight: 900; }
.hero-lead { max-width: 650px; margin: 22px 0 30px; color: rgba(255,255,255,.86); font-size: 19px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.trust-pill { display: inline-flex; align-items: center; gap: 7px; padding: 9px 12px; border: 1px solid rgba(255,255,255,.2); border-radius: 999px; color: rgba(255,255,255,.9); background: rgba(255,255,255,.08); font-size: 13px; backdrop-filter: blur(8px); }
.hero-bottom { position: absolute; z-index: 3; left: 0; right: 0; bottom: -1px; height: 60px; background: radial-gradient(120% 95px at 50% -35px, transparent 55%, #fff 56%); }

section { padding: 78px 0; }
.section-soft { background: linear-gradient(180deg, #f7fbfe, #eef6fb); }
.section-dark { color: white; background: linear-gradient(135deg, #051a31, #0b416f); }
.section-head { max-width: 760px; margin: 0 auto 38px; text-align: center; }
.section-head.left { margin-left: 0; text-align: left; }
.section-head h2 { font-size: clamp(30px, 4vw, 44px); line-height: 1.12; font-weight: 900; }
.section-head p { margin: 12px 0 0; color: var(--muted); font-size: 17px; }
.section-dark .section-head p { color: rgba(255,255,255,.72); }

.service-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.service-card {
  position: relative;
  overflow: hidden;
  min-height: 390px;
  display: flex;
  flex-direction: column;
  border: 1px solid #d7e4ee;
  border-top: 3px solid var(--cyan);
  border-radius: 8px;
  background: linear-gradient(155deg, #fff 52%, #f3f9fd);
  box-shadow: 0 14px 34px rgba(6,33,61,.11);
  transition: transform .25s ease, box-shadow .25s ease;
}
.service-card:hover { transform: translateY(-7px); box-shadow: var(--shadow-strong); }
.service-card:nth-child(2), .service-card:nth-child(5) { border-top-color: var(--orange); background: linear-gradient(155deg, #fff 52%, #fff5ee); }
.service-card:nth-child(3), .service-card:nth-child(6) { border-top-color: var(--blue); background: linear-gradient(155deg, #fff 52%, #edf6fc); }
.service-photo { position: relative; aspect-ratio: 16/10; flex: 0 0 auto; overflow: hidden; background: #dce8f1; }
.service-photo img { width: 100%; height: 100%; object-fit: cover; object-position: center; transition: transform .45s ease; }
.service-card:hover .service-photo img { transform: scale(1.035); }
.service-photo::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(6,33,61,.56)); }
.service-icon { position: absolute; z-index: 2; left: 18px; bottom: 16px; width: 48px; height: 48px; display: grid; place-items: center; border-radius: 50%; color: white; background: linear-gradient(135deg, var(--orange), var(--amber)); box-shadow: 0 12px 26px rgba(6,33,61,.25); }
.service-body { flex: 1; display: flex; flex-direction: column; padding: 20px; }
.service-body h3 { font-size: 19px; line-height: 1.25; font-weight: 900; }
.service-body p { margin: 9px 0 18px; color: var(--muted); font-size: 14px; }
.text-link { margin-top: auto; display: inline-flex; align-items: center; gap: 6px; color: var(--blue); font: 800 14px/1.2 Montserrat, sans-serif; }

.process-grid { position: relative; display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 20px; }
.process-grid::before { display: none; }
.process-card { position: relative; z-index: 1; padding: 10px 10px 22px; overflow: hidden; border: 1px solid rgba(131,205,239,.32); border-radius: 8px; color: var(--ink); background: linear-gradient(150deg, #fff 65%, #eaf5fb); box-shadow: 0 17px 42px rgba(1,16,31,.28); }
.process-photo { aspect-ratio: 16/8.6; overflow: hidden; border-radius: 6px; background: #dce8f1; }
.process-photo img { width: 100%; height: 100%; object-fit: cover; object-position: center; transition: transform .45s ease; }
.process-card:hover .process-photo img { transform: scale(1.025); }
.process-num { width: 38px; height: 38px; margin: -19px auto 10px; position: relative; display: grid; place-items: center; border: 3px solid white; border-radius: 50%; color: white; background: linear-gradient(135deg, var(--orange), var(--amber)); font: 900 15px/1 Montserrat, sans-serif; }
.process-card h3 { text-align: center; font-size: 17px; font-weight: 900; }
.process-card p { margin: 7px 4px 0; color: var(--muted); text-align: center; font-size: 13px; }

.about-grid { display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 44px; }
.about-copy h2 { font-size: clamp(30px, 4vw, 44px); line-height: 1.14; font-weight: 900; }
.about-copy > p { margin: 14px 0 24px; color: var(--muted); font-size: 17px; }
.benefits { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; }
.benefit { display: flex; gap: 12px; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: 0 10px 30px rgba(6,33,61,.08); }
.benefit-icon { flex: 0 0 40px; height: 40px; display: grid; place-items: center; border-radius: 50%; color: var(--blue); background: #e6f5fe; }
.benefit strong { display: block; font: 800 14px/1.3 Montserrat, sans-serif; }
.benefit span { display: block; margin-top: 4px; color: var(--muted); font-size: 13px; }
.showcase { position: relative; min-height: 430px; overflow: hidden; border-radius: var(--radius); background: url("real-installation.jpg") center/cover no-repeat; box-shadow: var(--shadow-strong); }
.showcase::before { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 34%, rgba(4,25,47,.95)); }
.showcase-copy { position: absolute; z-index: 1; left: 24px; right: 24px; bottom: 24px; color: white; }
.showcase-copy strong { display: block; font: 900 26px/1.15 Montserrat, sans-serif; }
.showcase-copy span { display: block; margin-top: 6px; color: rgba(255,255,255,.76); }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: stretch; }
.faq details { margin-bottom: 12px; padding: 17px 18px; border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: 0 8px 24px rgba(6,33,61,.07); }
.faq summary { cursor: pointer; list-style: none; font: 800 15px/1.35 Montserrat, sans-serif; }
.faq summary::-webkit-details-marker { display: none; }
.faq details p { margin: 10px 0 0; color: var(--muted); font-size: 14px; }
.contact-card { position: relative; overflow: hidden; padding: 30px; border-radius: var(--radius); color: white; background: linear-gradient(135deg, #061d36, #0a4d80); box-shadow: var(--shadow-strong); }
.contact-card::after { content: ""; position: absolute; width: 260px; height: 260px; right: -120px; top: -110px; border: 36px solid rgba(255,255,255,.08); border-radius: 50%; }
.contact-card > * { position: relative; z-index: 1; }
.contact-card h2 { font-size: 32px; line-height: 1.15; font-weight: 900; }
.contact-card > p { color: rgba(255,255,255,.76); }
.contact-line { display: flex; align-items: center; gap: 12px; padding: 13px 0; border-bottom: 1px solid rgba(255,255,255,.14); }
.contact-line svg { flex: 0 0 auto; color: #7ad5f6; }
.contact-line strong { display: block; font: 800 13px/1.2 Montserrat, sans-serif; }
.contact-line span { color: rgba(255,255,255,.78); font-size: 14px; }
.contact-card .hero-actions { margin-top: 22px; }

.inner-hero { position: relative; overflow: hidden; padding: 95px 0 82px; color: white; background: #06213d url("real-heating.jpg") center/cover no-repeat; }
.inner-hero::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(3,22,41,.97), rgba(6,51,91,.76) 62%, rgba(6,51,91,.3)); }
.inner-hero .container { position: relative; z-index: 1; }
.inner-hero h1 { max-width: 780px; font-size: clamp(38px, 5vw, 62px); }
.inner-hero p { max-width: 690px; margin: 18px 0 26px; color: rgba(255,255,255,.84); font-size: 18px; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 16px; color: rgba(255,255,255,.7); font-size: 13px; }
.content-grid { display: grid; grid-template-columns: minmax(0,1fr) 360px; gap: 34px; align-items: start; }
.article h2 { margin: 34px 0 12px; font-size: clamp(26px, 3vw, 36px); line-height: 1.2; }
.article h2:first-child { margin-top: 0; }
.article h3 { margin: 24px 0 8px; font-size: 21px; }
.article p, .article li { color: #4f6174; }
.article ul { padding-left: 20px; }
.seo-image { aspect-ratio: 16/9; margin: 26px 0; border-radius: var(--radius); background: url("real-boiler.jpg") center/cover no-repeat; box-shadow: var(--shadow); }
.side-card { position: sticky; top: 108px; padding: 24px; border-radius: var(--radius); color: white; background: linear-gradient(145deg, #061d36, #0b4e81); box-shadow: var(--shadow-strong); }
.side-card h2 { font-size: 24px; }
.side-card p { color: rgba(255,255,255,.74); }
.side-list { display: grid; gap: 10px; margin: 20px 0; }
.side-list span { display: flex; align-items: center; gap: 9px; font-size: 14px; }
.side-list svg { color: #ffac4c; }
.side-card .btn { width: 100%; margin-top: 8px; }

.footer { position: relative; overflow: hidden; padding: 64px 0 86px; color: rgba(255,255,255,.72); background: linear-gradient(125deg, #031426, #082f56 60%, #0a416e); box-shadow: inset 0 18px 60px rgba(0,0,0,.24); }
.footer::before { content: ""; position: absolute; inset: 0; opacity: .1; background-image: linear-gradient(rgba(255,255,255,.2) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.2) 1px, transparent 1px); background-size: 46px 46px; }
.footer-inner { position: relative; display: grid; grid-template-columns: 1.25fr .8fr 1fr; gap: 42px; }
.footer-brand img { width: 270px; height: 84px; object-fit: contain; object-position: left center; }
.footer-brand p { max-width: 390px; margin: 14px 0 18px; }
.footer h3 { margin-bottom: 16px; color: white; font-size: 17px; }
.footer-links { display: grid; gap: 10px; }
.footer-links a { display: flex; align-items: center; gap: 8px; transition: color .2s ease; }
.footer-links a:hover { color: white; }
.footer-contact { display: grid; gap: 12px; }
.footer-contact a, .footer-contact span { display: flex; align-items: center; gap: 10px; }
.footer-contact svg { color: #69cef4; }
.footer-bottom { position: relative; margin-top: 42px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.14); display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: 13px; }
.creator-link { display: inline-flex; align-items: center; gap: 9px; padding: 9px 13px; border: 1px solid rgba(255,255,255,.17); border-radius: 999px; color: white; background: rgba(255,255,255,.08); box-shadow: 0 9px 24px rgba(0,0,0,.18); }
.creator-link svg { color: #62df8a; }

.floating-actions { position: fixed; right: 22px; bottom: 22px; z-index: 90; display: grid; gap: 11px; }
.float-btn { position: relative; width: 60px; height: 60px; display: grid; place-items: center; border-radius: 50%; color: white; box-shadow: 0 14px 36px rgba(6,33,61,.3); transition: transform .2s ease; }
.float-btn:hover { transform: translateY(-3px) scale(1.03); }
.float-btn.whatsapp { background: linear-gradient(135deg, #1fc766, #0b9f4b); }
.float-btn.call { background: linear-gradient(135deg, var(--blue), var(--cyan)); }
.float-btn svg { width: 27px; height: 27px; }
.float-btn::before { content: ""; position: absolute; inset: -5px; border: 1px solid currentColor; border-radius: 50%; opacity: .25; animation: pulse 2s ease-out infinite; }
.mobile-bar { display: none; position: fixed; z-index: 95; left: 0; right: 0; bottom: 0; padding: 8px; gap: 8px; border-top: 1px solid var(--line); background: rgba(255,255,255,.96); backdrop-filter: blur(12px); box-shadow: 0 -10px 30px rgba(6,33,61,.12); }
.mobile-bar a { min-height: 50px; flex: 1; display: flex; align-items: center; justify-content: center; gap: 8px; border-radius: 8px; color: white; font: 800 14px/1 Montserrat, sans-serif; }
.mobile-bar .mobile-call { background: linear-gradient(135deg, var(--blue), var(--cyan)); }
.mobile-bar .mobile-whatsapp { background: linear-gradient(135deg, #1fc766, #0b9f4b); }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity: 1; transform: none; }
@keyframes pulse { 0% { transform: scale(.9); opacity: .35; } 75%,100% { transform: scale(1.25); opacity: 0; } }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } .reveal { opacity: 1; transform: none; } }
@media (max-width: 1080px) { .menu { display: none; } .menu-toggle { display: grid; place-items: center; } .site-nav.open .menu { position: absolute; left: 16px; right: 16px; top: 84px; display: grid; padding: 10px; border-radius: 8px; background: white; box-shadow: var(--shadow-strong); } .site-nav.open .menu a { padding: 13px; border-radius: 6px; } .content-grid { grid-template-columns: minmax(0,1fr) 320px; } }
@media (max-width: 840px) { .service-grid { grid-template-columns: repeat(2, minmax(0,1fr)); } .about-grid, .contact-grid, .content-grid { grid-template-columns: 1fr; } .side-card { position: static; } .footer-inner { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } .hero { min-height: 620px; background-position: 64% center; } .hero::before { background: linear-gradient(90deg, rgba(3,22,41,.97), rgba(4,35,65,.78) 68%, rgba(4,35,65,.38)); } }
@media (max-width: 640px) {
  body { padding-bottom: 66px; }
  .container { width: min(100% - 24px, 1180px); }
  .topbar-inner { min-height: 36px; justify-content: center; }
  .topbar-item:first-child, .topbar-item:last-child { display: none; }
  .nav-inner { min-height: 76px; gap: 8px; }
  .brand img { width: 190px; height: 62px; }
  .nav-actions .btn { display: none; }
  .lang-link { min-width: 50px; height: 44px; padding: 0 8px; font-size: 12px; }
  .flag { width: 34px; height: 23px; }
  .menu-toggle { width: 42px; height: 42px; }
  .site-nav.open .menu { top: 78px; }
  .hero { min-height: 650px; background-position: 70% center; }
  .hero::before { background: linear-gradient(90deg, rgba(3,22,41,.98), rgba(4,35,65,.89) 72%, rgba(4,35,65,.58)); }
  .hero-inner { padding: 72px 0 94px; }
  h1 { font-size: clamp(36px, 12vw, 50px); }
  .hero-lead { font-size: 16px; }
  .hero-actions .btn { width: 100%; }
  .trust-row { gap: 8px; }
  .trust-pill { font-size: 12px; }
  section { padding: 58px 0; }
  .section-head { margin-bottom: 28px; }
  .section-head p { font-size: 15px; }
  .service-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; }
  .service-card { min-height: 0; }
  .service-photo { aspect-ratio: 4/3; }
  .service-icon { left: 8px; bottom: 8px; width: 36px; height: 36px; }
  .service-body { padding: 12px 10px 13px; }
  .service-body h3 { font-size: 14px; line-height: 1.25; }
  .service-body p { display: -webkit-box; min-height: 51px; margin: 7px 0 10px; overflow: hidden; font-size: 11px; line-height: 1.5; -webkit-line-clamp: 3; -webkit-box-orient: vertical; }
  .text-link { gap: 4px; font-size: 11px; }
  .process-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; }
  .process-card { padding: 6px 6px 13px; }
  .process-photo { aspect-ratio: 4/3; }
  .process-num { width: 30px; height: 30px; margin: -15px auto 7px; border-width: 2px; font-size: 11px; }
  .process-card h3 { font-size: 14px; }
  .process-card p { margin: 6px 3px 0; font-size: 11px; line-height: 1.45; }
  .benefits { grid-template-columns: 1fr; }
  .showcase { min-height: 360px; }
  .contact-card { padding: 23px; }
  .inner-hero { padding: 70px 0 62px; }
  .inner-hero p { font-size: 16px; }
  .footer { padding: 52px 0 40px; }
  .footer-inner { grid-template-columns: 1fr; gap: 30px; }
  .footer-brand { grid-column: auto; }
  .footer-brand img { width: 250px; height: 76px; }
  .footer-bottom { align-items: flex-start; flex-direction: column; }
  .floating-actions { display: none; }
  .mobile-bar { display: flex; }
}
@media (max-width: 390px) { .brand img { width: 190px; height: 60px; } .lang-link { min-width: 46px; padding: 0 6px; } .lang-link .lang-code { display: none; } .flag { width: 35px; height: 24px; } }