:root {
  --bg: #f5f7fa;
  --white: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --dark: #111827;
  --dark-2: #1f2937;
  --accent: #d97706;
  --accent-hover: #b45309;
  --radius: 22px;
  --shadow: 0 18px 50px rgba(17, 24, 39, 0.08);
  --container: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

img {
  max-width: 100%;
  display: block;
  border: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.section {
  padding: 80px 0;
}

.section-light {
  background: #fbfcfe;
}

.section-dark {
  background: linear-gradient(180deg, #1f2937 0%, #111827 100%);
  color: #fff;
}

.section-head {
  margin-bottom: 34px;
  text-align: center;
}

.section-head--left {
  text-align: left;
}

.section-head--light h2,
.section-head--light p {
  color: #fff;
}

.section-head h2 {
  margin: 0 0 12px;
  font-size: 40px;
  line-height: 1.1;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

/* header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.8);
}

.header-row {
  min-height: 84px;
  display: grid;
  grid-template-columns: 180px 1fr auto auto;
  gap: 24px;
  align-items: center;
}

.logo img {
  max-height: 52px;
  width: auto;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  justify-content: center;
}

.main-nav a {
  font-weight: 600;
  color: var(--dark-2);
}

.main-nav a:hover {
  color: var(--accent);
}

.header-contacts {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  font-size: 14px;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 14px;
  font-weight: 700;
  transition: .2s ease;
  cursor: pointer;
  border: 0;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--accent-hover);
}

.btn-secondary {
  background: #fff;
  color: var(--dark);
  border: 1px solid var(--line);
}

.btn-secondary:hover {
  border-color: #cbd5e1;
  background: #f9fafb;
}

.btn-full {
  width: 100%;
}

/* hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 90px 0 70px;
  background: linear-gradient(135deg, #fff 0%, #f3f6fa 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(17,24,39,.55), rgba(17,24,39,.55)),
    url('/upload/iblock/6b7/jcdpqr00628i6vsp60011o73c38mzsjj.jpg') center/cover no-repeat;
  opacity: .9;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 420px;
  gap: 40px;
  align-items: center;
}

.hero-content {
  color: #fff;
}

.hero-badge {
  display: inline-block;
  margin-bottom: 18px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.16);
  font-size: 14px;
}

.hero h1 {
  margin: 0 0 20px;
  font-size: 54px;
  line-height: 1.05;
}

.hero p {
  max-width: 720px;
  margin: 0 0 28px;
  font-size: 18px;
  color: rgba(255,255,255,.88);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-features span {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.14);
  font-size: 14px;
}

.hero-card {
  background: rgba(255,255,255,.95);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow);
}

.hero-card h2 {
  margin: 0 0 10px;
  font-size: 28px;
}

.hero-card p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
}

/* forms */
.lead-form,
.cta-form,
.callback-form {
  display: grid;
  gap: 14px;
}

input,
textarea,
select {
  width: 100%;
  min-height: 52px;
  padding: 0 16px;
  border: 1px solid #dbe2ea;
  border-radius: 14px;
  background: #fff;
  font-size: 15px;
  outline: none;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent);
}

/* cards */
.cards-grid {
  display: grid;
  gap: 24px;
}

.cards-grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.card,
.product-card,
.brand,
.contacts-card,
.cta-box,
.callback-box {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card {
  overflow: hidden;
}

.card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.card h3 {
  margin: 18px 20px 10px;
  font-size: 22px;
}

.card p {
  margin: 0 20px 22px;
  color: var(--muted);
}

/* advantages */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.adv-item {
  padding: 28px;
  border-radius: 20px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
}

.adv-item h3 {
  margin: 0 0 10px;
  font-size: 22px;
}

.adv-item p {
  margin: 0;
  color: rgba(255,255,255,.82);
}

/* catalog */
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  overflow: hidden;
  padding-bottom: 18px;
}

.product-card img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.product-card h3 {
  margin: 18px 18px 8px;
  font-size: 20px;
}

.product-card p {
  margin: 0 18px 14px;
  color: var(--muted);
}

.product-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 0 18px;
  font-weight: 700;
}

/* CTA */
.cta-box,
.callback-box {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 28px;
  align-items: center;
  padding: 34px;
}

.cta-box h2,
.callback-box h2 {
  margin: 0 0 10px;
  font-size: 34px;
}

.cta-box p,
.callback-box p {
  margin: 0;
  color: var(--muted);
}

/* company */
.company-grid {
  display: grid;
  grid-template-columns: 480px 1fr;
  gap: 40px;
  align-items: center;
}

.company-image img {
  width: 100%;
  border-radius: 24px;
  object-fit: cover;
}

.company-content p {
  color: var(--muted);
  font-size: 17px;
}

.stats-grid {
  margin-top: 28px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

.stat {
  background: #fff;
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--shadow);
}

.stat strong {
  display: block;
  font-size: 32px;
  line-height: 1;
  margin-bottom: 8px;
}

.stat span {
  color: var(--muted);
}

/* brands */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 18px;
}

.brand {
  min-height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
}

.brand img {
  max-height: 62px;
  width: auto;
  object-fit: contain;
}

/* contacts */
.contacts-grid {
  display: grid;
  grid-template-columns: 420px 1fr;
  gap: 28px;
}

.contacts-card {
  padding: 30px;
}

.contacts-card h2 {
  margin: 0 0 20px;
  font-size: 34px;
}

.contact-item + .contact-item {
  margin-top: 18px;
}

.contact-label {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 14px;
}

.contact-value {
  font-size: 17px;
  font-weight: 600;
}

.map-placeholder {
  overflow: hidden;
  min-height: 520px;
  border-radius: 24px;
  background: #dbe4ee;
  box-shadow: var(--shadow);
}

.map-placeholder iframe {
  display: block;
  width: 100%;
  height: 100%;
}

/* footer */
.site-footer {
  padding: 34px 0;
  background: var(--dark);
  color: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 30px;
}

.footer-logo {
  max-height: 56px;
  margin-bottom: 14px;
}

.footer-title {
  margin-bottom: 10px;
  font-size: 18px;
  font-weight: 700;
}

.footer-copy {
  color: rgba(255,255,255,.72);
}

/* responsive */
@media (max-width: 1100px) {
  .header-row,
  .hero-grid,
  .company-grid,
  .contacts-grid,
  .cta-box,
  .callback-box {
    grid-template-columns: 1fr;
  }

  .cards-grid--4,
  .adv-grid,
  .catalog-grid,
  .brands-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .main-nav {
    justify-content: flex-start;
  }

  .header-contacts {
    align-items: flex-start;
  }

  .hero h1 {
    font-size: 42px;
  }
}

@media (max-width: 700px) {
  .section {
    padding: 60px 0;
  }

  .section-head h2,
  .hero h1,
  .cta-box h2,
  .callback-box h2,
  .contacts-card h2 {
    font-size: 30px;
  }

  .cards-grid--4,
  .adv-grid,
  .catalog-grid,
  .brands-grid,
  .stats-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .product-footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-row {
    gap: 16px;
  }

  .main-nav {
    gap: 12px;
  }
}