/* ===== БРС Алмаш — концепция «Заводской журнал» ===== */

:root {
  --color-primary: #292823;
  --color-primary-dark: #1d1e1b;
  --color-primary-light: #49473f;
  --color-bg: #efebe2;
  --color-bg-soft: #fffdf8;
  --color-bg-soft-2: #d8d1c5;
  --color-text: #292823;
  --color-text-muted: #6b675e;
  --color-text-on-dark: #fffdf8;
  --color-text-on-dark-muted: #d8d1c5;
  --color-accent: #d45131;
  --color-accent-dark: #a83920;
  --color-border: #aaa294;
  --color-border-light: #d3cdc2;
  --radius-lg: 0;
  --radius-md: 0;
  --radius-sm: 0;
  --container: 1240px;
  --shadow-card: none;
  --font-main: Arial, "Helvetica Neue", sans-serif;
  --font-display: "Arial Narrow", "Roboto Condensed", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding: 0;
  color: var(--color-text);
  background:
    linear-gradient(rgba(41,40,35,.025) 1px, transparent 1px),
    var(--color-bg);
  background-size: 100% 32px;
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 28px; }

h1, h2, h3, h4 {
  margin: 0 0 .65em;
  color: var(--color-text);
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.03;
  letter-spacing: -.035em;
}
h1 { max-width: 22ch; font-size: clamp(38px, 5.2vw, 76px); }
h2 { font-size: clamp(28px, 3.4vw, 46px); }
h3 { font-size: 21px; line-height: 1.18; }
p { margin: 0 0 1em; color: var(--color-text); }

/* ---------- Service line and header ---------- */
.site-topline { background: var(--color-primary-dark); color: var(--color-text-on-dark-muted); }
.topline-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 7px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(239,235,226,.97);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(8px);
}
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--color-primary);
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -.02em;
  white-space: nowrap;
}
.logo-mark {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  position: relative;
  background: var(--color-accent);
}
.logo-mark::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 2px solid var(--color-bg-soft);
  border-radius: 50%;
}
.main-nav { display: flex; align-items: center; gap: 24px; }
.main-nav a {
  color: var(--color-text-muted);
  font-size: 13px;
  font-weight: 700;
  border-bottom: 2px solid transparent;
  padding: 8px 0 6px;
}
.main-nav a:hover { color: var(--color-text); border-bottom-color: var(--color-accent); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.header-phone { display: flex; flex-direction: column; align-items: flex-end; white-space: nowrap; }
.header-phone span { color: var(--color-primary); font-size: 14px; font-weight: 800; }
.header-phone small { color: var(--color-text-muted); font-size: 10px; letter-spacing: .03em; }
.nav-toggle { display: none; border: 0; background: transparent; padding: 8px; cursor: pointer; }
.nav-toggle span { display: block; width: 25px; height: 2px; margin: 5px 0; background: var(--color-primary); }
.mobile-nav { display: none; }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs { padding: 18px 0 0; }
.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  list-style: none;
  color: var(--color-text-muted);
  font-size: 12px;
}
.breadcrumbs li:not(:last-child)::after { content: "→"; margin-left: 7px; color: var(--color-accent); }
.breadcrumbs a:hover { color: var(--color-accent-dark); }
.breadcrumbs li[aria-current] { color: var(--color-text); font-weight: 700; }

/* ---------- Editorial hero ---------- */
.hero {
  max-width: var(--container);
  margin: 26px auto 0;
  padding: 46px 28px 42px;
  display: grid;
  grid-template-columns: .86fr 1.14fr;
  gap: 46px;
  align-items: stretch;
  color: var(--color-text);
  border-top: 7px solid var(--color-primary);
  border-bottom: 1px solid var(--color-border);
}
.hero > div:first-child { align-self: center; padding: 12px 0; }
.hero h1 { color: var(--color-text); }
.hero-eyebrow,
.editorial-kicker,
.section-title .eyebrow {
  display: block;
  margin-bottom: 12px;
  color: var(--color-accent);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .11em;
  text-transform: uppercase;
}
.hero .lead { max-width: 55ch; color: var(--color-text-muted); font-size: 17px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 21px;
  border: 1px solid var(--color-primary);
  border-radius: 0;
  background: transparent;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}
.btn-primary,
.btn-light { border-color: var(--color-accent); background: var(--color-accent); color: var(--color-bg-soft); }
.btn-primary:hover,
.btn-light:hover { border-color: var(--color-accent-dark); background: var(--color-accent-dark); }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3,1fr);
  gap: 12px;
  margin-top: 30px;
}
.hero-stats > div { padding-top: 13px; border-top: 2px solid var(--color-accent); }
.hero-stat-num { color: var(--color-text); font-family: var(--font-display); font-size: 24px; font-weight: 800; line-height: 1.05; }
.hero-stat-label { max-width: 18ch; margin-top: 5px; color: var(--color-text-muted); font-size: 11px; line-height: 1.35; }

.hero-media,
.media-placeholder,
.cluster-card .thumb {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
  padding: 26px;
  background:
    linear-gradient(90deg, transparent 49.8%, rgba(41,40,35,.08) 50%, transparent 50.2%),
    linear-gradient(transparent 49.8%, rgba(41,40,35,.08) 50%, transparent 50.2%),
    var(--color-bg-soft);
  background-size: 46px 46px;
  border: 1px solid var(--color-border);
}
.technical-figure {
  width: min(82%, 520px);
  aspect-ratio: 1.65/1;
  position: relative;
  display: grid;
  place-items: center;
}
.technical-figure::before,
.technical-figure::after {
  content: "";
  position: absolute;
  inset: 5%;
  border: 1px solid rgba(41,40,35,.19);
  transform: rotate(12deg);
}
.technical-figure::after { transform: rotate(-12deg); }
.technical-clamp {
  width: 78%;
  aspect-ratio: 2.25/1;
  position: relative;
  z-index: 1;
  border: 14px solid #8d8e88;
  border-radius: 48%;
  background: linear-gradient(140deg,#d8d9d4,#8f908b);
  box-shadow: inset 0 0 0 5px #5b5d59, 0 18px 34px rgba(41,40,35,.15);
}
.technical-clamp::before {
  content: "";
  position: absolute;
  width: 13%;
  top: -36%;
  bottom: -36%;
  left: 43%;
  background: var(--color-accent);
  border: 3px solid var(--color-accent-dark);
  transform: skew(-7deg);
}
.technical-clamp::after {
  content: "";
  position: absolute;
  right: 3%;
  top: 37%;
  width: 18%;
  height: 25%;
  background: #676862;
}
.figure-caption {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 12px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.specification-band { max-width: var(--container); margin: 0 auto; padding: 0 28px; }
.specification-band-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 22px;
  background: var(--color-accent);
  color: var(--color-bg-soft);
}
.specification-band-inner strong { font-family: var(--font-display); font-size: 18px; }
.specification-band-inner span { font-size: 12px; font-weight: 700; }

/* ---------- Page intros and editorial sections ---------- */
main { max-width: var(--container); margin: 0 auto; padding: 0 28px 56px; }
.page-intro {
  margin-top: 20px;
  padding: 30px 0 34px;
  border-top: 7px solid var(--color-primary);
  border-bottom: 1px solid var(--color-border);
}
.page-intro h1 { margin-bottom: 18px; }
.page-intro-cluster { display: grid; grid-template-columns: 1.15fr .85fr; column-gap: 44px; }
.page-intro-cluster .editorial-kicker { grid-column: 1/-1; }
.page-intro-cluster .lead { align-self: end; }
.lead { max-width: 70ch; color: var(--color-text-muted); font-size: 17px; }
section { margin-top: 64px; }
.section-title {
  margin-bottom: 24px;
  padding-top: 17px;
  border-top: 5px solid var(--color-primary);
}
.section-title h2 { max-width: 24ch; }
.content-block {
  position: relative;
  padding-top: 22px;
  border-top: 1px solid var(--color-border);
  background: transparent;
}
.content-block::before {
  content: "Технический материал";
  display: block;
  margin-bottom: 11px;
  color: var(--color-accent);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.content-block + .content-block { margin-top: 54px; }
.content-block > h2 { max-width: 27ch; }
.content-block > p { max-width: 82ch; }
.block-with-media { display: grid; grid-template-columns: 1fr minmax(310px, 44%); gap: 42px; align-items: start; }
.media-placeholder { min-height: 300px; }
.technical-figure-small { width: 86%; }

/* ---------- Grids and cards ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 0; border-top: 1px solid var(--color-border); border-left: 1px solid var(--color-border); }
.card-grid.cols-2 { grid-template-columns: repeat(2,1fr); }
.card-grid.cols-4 { grid-template-columns: repeat(4,1fr); }
.card {
  min-height: 210px;
  padding: 26px;
  background: var(--color-bg-soft);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.card:nth-child(2n) { background: var(--color-bg-soft-2); }
.card h3 { max-width: 18ch; }
.card p { margin: 0; color: var(--color-text-muted); font-size: 14px; }
.card .num { display: block; margin-bottom: 28px; color: var(--color-accent); font-family: var(--font-display); font-size: 13px; font-weight: 800; }

.cluster-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; list-style: none; }
.cluster-card {
  min-width: 0;
  padding: 0 0 22px;
  display: flex;
  flex-direction: column;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
}
.cluster-card:nth-child(3n+2) { background: var(--color-bg-soft-2); }
.cluster-card .thumb { min-height: 154px; margin: 0 0 22px; padding: 0; border: 0; border-bottom: 1px solid var(--color-border); }
.cluster-card .thumb::before,
.cluster-card .thumb::after {
  content: "";
  position: absolute;
  width: 38%;
  aspect-ratio: 2/1;
  border: 7px solid #8a8b86;
  border-radius: 50%;
}
.cluster-card .thumb::after { width: 8%; height: 76%; border: 0; border-radius: 0; background: var(--color-accent); transform: skew(-6deg); }
.cluster-card .thumb { color: transparent; }
.cluster-card h2,
.cluster-card p,
.cluster-card .card-link { margin-left: 22px; margin-right: 22px; }
.cluster-card h2 { font-size: 24px; }
.cluster-card h2 a:hover { color: var(--color-accent-dark); }
.cluster-card p { flex-grow: 1; color: var(--color-text-muted); font-size: 14px; }
.cluster-card .card-link {
  align-self: flex-start;
  margin-top: 14px;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--color-accent);
  color: var(--color-text);
  font-size: 13px;
  font-weight: 800;
}

/* ---------- Cluster and related lists ---------- */
.subgroup-block { margin-bottom: 42px; counter-reset: query-item; }
.subgroup-block > h3 { padding: 12px 0; border-top: 4px solid var(--color-primary); border-bottom: 1px solid var(--color-border); color: var(--color-text); font-size: 27px; }
.query-list { display: grid; grid-template-columns: repeat(3,1fr); gap: 0; list-style: none; border-left: 1px solid var(--color-border); }
.query-list li { counter-increment: query-item; min-width: 0; }
.query-list a {
  min-height: 86px;
  padding: 17px 18px 17px 48px;
  position: relative;
  display: flex;
  align-items: center;
  background: var(--color-bg-soft);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.35;
}
.query-list a::before {
  content: counter(query-item, decimal-leading-zero);
  position: absolute;
  left: 14px;
  top: 17px;
  color: var(--color-accent);
  font-size: 10px;
  font-weight: 800;
}
.query-list a:hover { background: var(--color-accent); color: var(--color-bg-soft); }
.query-list a:hover::before { color: var(--color-bg-soft); }

.related-block ul { display: grid; grid-template-columns: repeat(2,1fr); gap: 0; list-style: none; border-top: 1px solid var(--color-border); border-left: 1px solid var(--color-border); }
.related-block a {
  min-height: 68px;
  padding: 15px 18px;
  display: flex;
  align-items: center;
  background: var(--color-bg-soft);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
  font-weight: 700;
}
.related-block a:hover { background: var(--color-primary); color: var(--color-text-on-dark); }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; border-top: 5px solid var(--color-primary); }
.spec-table { width: 100%; min-width: 520px; border-collapse: collapse; background: var(--color-bg-soft); }
.spec-table th,
.spec-table td { padding: 15px 18px; text-align: left; border-bottom: 1px solid var(--color-border-light); font-size: 14px; }
.spec-table th { width: 36%; color: var(--color-text-muted); font-weight: 700; }
.spec-table td { font-weight: 700; }
.spec-table tr:last-child th,
.spec-table tr:last-child td { border-bottom: 0; }

/* ---------- Advantages, FAQ, expert ---------- */
.advantage-list { display: grid; grid-template-columns: repeat(2,1fr); gap: 0; list-style: none; border-top: 1px solid var(--color-border); border-left: 1px solid var(--color-border); }
.advantage-list li {
  min-height: 92px;
  padding: 20px 22px 20px 56px;
  position: relative;
  background: var(--color-bg-soft);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}
.advantage-list li:nth-child(4n+2),
.advantage-list li:nth-child(4n+3) { background: var(--color-bg-soft-2); }
.advantage-list li::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 23px;
  width: 18px;
  height: 18px;
  background: var(--color-accent);
}
.faq-block .faq-item { display: grid; grid-template-columns: .8fr 1.2fr; gap: 28px; padding: 22px 0; border-bottom: 1px solid var(--color-border); }
.faq-block .faq-item h3 { margin: 0; font-size: 20px; }
.faq-block .faq-item p { margin: 0; color: var(--color-text-muted); font-size: 14px; }
.expert-card { display: grid; grid-template-columns: 94px 1fr; gap: 24px; align-items: center; padding: 24px; background: var(--color-bg-soft); border-top: 5px solid var(--color-primary); }
.expert-photo { width: 94px; height: 110px; margin: 0; position: relative; background: var(--color-bg-soft-2); border: 1px solid var(--color-border); }
.expert-photo::before { content: ""; position: absolute; width: 32px; height: 32px; left: 30px; top: 20px; border: 2px solid var(--color-border); border-radius: 50%; }
.expert-photo::after { content: ""; position: absolute; width: 56px; height: 30px; left: 18px; bottom: 15px; border: 2px solid var(--color-border); border-radius: 40px 40px 0 0; }
.expert-name { margin: 0; font-family: var(--font-display); font-size: 24px; font-weight: 800; }
.expert-role,
.expert-note { color: var(--color-text-muted); font-size: 14px; }
.expert-role { margin: 1px 0 9px; }
.expert-note { max-width: 74ch; margin-bottom: 8px; }
.expert-info a { padding-bottom: 3px; border-bottom: 2px solid var(--color-accent); font-size: 13px; font-weight: 800; }

/* ---------- CTA ---------- */
.cta-block {
  padding: 38px;
  position: relative;
  overflow: hidden;
  background: var(--color-accent);
  color: var(--color-bg-soft);
  border-top: 7px solid var(--color-primary);
}
.cta-block::after {
  content: "";
  position: absolute;
  width: 280px;
  height: 280px;
  right: -80px;
  bottom: -150px;
  border: 35px solid rgba(255,253,248,.18);
  border-radius: 50%;
}
.cta-block h2 { max-width: 20ch; color: var(--color-bg-soft); }
.cta-block p { max-width: 76ch; color: #fff4eb; }
.cta-block .contacts { display: flex; flex-wrap: wrap; gap: 12px 30px; list-style: none; margin-top: 20px; position: relative; z-index: 1; }
.cta-block .contacts li { font-size: 15px; font-weight: 800; }
.cta-block .contacts a { padding-bottom: 3px; border-bottom: 2px solid var(--color-bg-soft); }

.product-catalog-cta {
  padding: 28px 32px;
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
  background: var(--color-bg-soft);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-left: 7px solid var(--color-accent);
}
.product-catalog-cta-label {
  color: var(--color-accent-dark);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.product-catalog-cta p { margin: 0; max-width: 68ch; color: var(--color-text-muted); }
.product-catalog-cta p a { color: var(--color-text); border-bottom: 2px solid var(--color-accent); }
.product-catalog-cta-link {
  min-height: 46px;
  padding: 11px 16px;
  display: inline-flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--color-accent);
  background: var(--color-accent);
  color: var(--color-bg-soft);
  font-size: 13px;
  font-weight: 800;
  white-space: nowrap;
}
.product-catalog-cta-link:hover { border-color: var(--color-accent-dark); background: var(--color-accent-dark); }
.product-catalog-cta + .cta-block { margin-top: 22px; }

/* ---------- Footer ---------- */
.site-footer { margin-top: 82px; background: var(--color-primary-dark); color: var(--color-text-on-dark-muted); }
.footer-inner { max-width: var(--container); margin: 0 auto; padding: 48px 28px; display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 50px; }
.logo-footer { color: var(--color-text-on-dark); }
.footer-brand p { max-width: 42ch; margin-top: 18px; color: var(--color-text-on-dark-muted); font-size: 13px; }
.footer-column { display: flex; flex-direction: column; align-items: flex-start; gap: 9px; font-size: 13px; }
.footer-column strong { margin-bottom: 6px; color: var(--color-text-on-dark); text-transform: uppercase; letter-spacing: .08em; }
.footer-column a:hover { color: var(--color-text-on-dark); }
.footer-bottom { max-width: var(--container); margin: 0 auto; padding: 16px 28px; display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid #44453f; font-size: 11px; }

/* ---------- Contact widget ---------- */
.contact-widget { position: fixed; right: 20px; bottom: 20px; z-index: 200; display: flex; flex-direction: column; align-items: flex-end; gap: 10px; }
.contact-widget-panel { display: flex; flex-direction: column; align-items: flex-end; gap: 7px; opacity: 0; transform: translateY(8px); pointer-events: none; transition: opacity .18s ease, transform .18s ease; }
.contact-widget.open .contact-widget-panel { opacity: 1; transform: translateY(0); pointer-events: auto; }
.contact-widget-item { display: inline-flex; align-items: center; gap: 9px; padding: 11px 16px; background: var(--color-bg-soft); border: 1px solid var(--color-border); color: var(--color-text); font-size: 13px; font-weight: 800; box-shadow: 0 8px 24px rgba(41,40,35,.12); }
.contact-widget-item:hover { background: var(--color-primary); color: var(--color-text-on-dark); }
.contact-widget-item-dot { width: 8px; height: 8px; flex-shrink: 0; background: var(--color-accent); }
.contact-widget-toggle { width: 58px; height: 58px; padding: 0; display: flex; align-items: center; justify-content: center; border: 0; background: var(--color-accent); box-shadow: 0 9px 24px rgba(41,40,35,.22); cursor: pointer; transition: background .18s ease; }
.contact-widget-toggle:hover { background: var(--color-accent-dark); }
.contact-widget-toggle .plus-icon { width: 21px; height: 21px; position: relative; transition: transform .2s ease; }
.contact-widget-toggle .plus-icon::before,
.contact-widget-toggle .plus-icon::after { content: ""; position: absolute; background: #fff; }
.contact-widget-toggle .plus-icon::before { left: 0; top: 50%; width: 100%; height: 2px; margin-top: -1px; }
.contact-widget-toggle .plus-icon::after { top: 0; left: 50%; width: 2px; height: 100%; margin-left: -1px; }
.contact-widget.open .contact-widget-toggle .plus-icon { transform: rotate(45deg); }

/* ================= Responsive ================= */
@media (max-width: 1040px) {
  .main-nav { gap: 15px; }
  .main-nav a { font-size: 12px; }
  .cluster-grid { grid-template-columns: repeat(2,1fr); }
  .query-list { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 860px) {
  h1 { font-size: clamp(36px, 9vw, 58px); }
  .topline-inner { padding-left: 18px; padding-right: 18px; }
  .topline-inner span:last-child { display: none; }
  .header-inner { padding: 14px 18px; }
  .main-nav,
  .header-phone { display: none; }
  .nav-toggle { display: block; }
  .mobile-nav { flex-direction: column; padding: 8px 18px 17px; border-top: 1px solid var(--color-border); }
  .mobile-nav.open { display: flex; }
  .mobile-nav a { padding: 11px 0; border-bottom: 1px solid var(--color-border); font-size: 14px; font-weight: 700; }
  .hero { grid-template-columns: 1fr; gap: 28px; margin: 14px 16px 0; padding: 32px 0 26px; }
  .hero > div:first-child { padding: 0; }
  .hero-media { min-height: 280px; }
  .specification-band { padding: 0 16px; }
  .specification-band-inner { align-items: flex-start; flex-direction: column; gap: 4px; }
  main { padding: 0 16px 38px; }
  .breadcrumbs .container { padding: 0 16px; }
  .page-intro-cluster { grid-template-columns: 1fr; }
  .page-intro-cluster .editorial-kicker { grid-column: auto; }
  .block-with-media { grid-template-columns: 1fr; }
  .card-grid,
  .card-grid.cols-2,
  .card-grid.cols-4 { grid-template-columns: 1fr; }
  .cluster-grid { grid-template-columns: 1fr; }
  .query-list,
  .related-block ul { grid-template-columns: 1fr; }
  .advantage-list { grid-template-columns: 1fr; }
  .advantage-list li:nth-child(4n+2),
  .advantage-list li:nth-child(4n+3) { background: var(--color-bg-soft); }
  .advantage-list li:nth-child(2n) { background: var(--color-bg-soft-2); }
  .faq-block .faq-item { grid-template-columns: 1fr; gap: 8px; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1/-1; }
}

@media (max-width: 560px) {
  body { font-size: 15px; }
  .logo { font-size: 17px; }
  .logo-mark { width: 37px; height: 37px; }
  .hero { margin-left: 16px; margin-right: 16px; }
  .hero-stats { grid-template-columns: 1fr; }
  .hero-stats > div { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .hero-stat-label { max-width: none; }
  .hero-media,
  .media-placeholder { min-height: 230px; }
  .technical-clamp { border-width: 9px; }
  section { margin-top: 50px; }
  .page-intro { padding-top: 24px; }
  .cta-block { padding: 28px 22px; }
  .cta-block .contacts { flex-direction: column; gap: 10px; }
  .product-catalog-cta { grid-template-columns: 1fr; gap: 16px; padding: 24px 22px; }
  .product-catalog-cta-link { justify-content: space-between; white-space: normal; }
  .expert-card { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 28px; padding: 38px 18px; }
  .footer-brand { grid-column: auto; }
  .footer-bottom { align-items: flex-start; flex-direction: column; padding: 15px 18px; }
  .contact-widget { right: 14px; bottom: 14px; }
  .contact-widget-toggle { width: 52px; height: 52px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}