/* =============================================
   ТРЕЗВЫЙ САНТЕХНИК — Design System
   ============================================= */

/* Google Fonts — подключены через <link> в каждом HTML-файле */

/* --- CSS Variables --- */
:root {
  --color-primary:    #1A6FBF;
  --color-accent:     #1A6FBF;
  --color-dark:       #1C1C1C;
  --color-light-bg:   #F7F8FA;
  --color-white:      #FFFFFF;
  --color-border:     #E0E0E0;
  --color-muted:      #6B6B6B;
  --color-whatsapp:   #25D366;

  --radius-base:  6px;
  --radius-card:  10px;
  --shadow-card:  0 2px 12px rgba(0,0,0,0.08);
  --shadow-card-hover: 0 8px 24px rgba(0,0,0,0.14);
  --transition:   0.25s ease;
}

/* =============================================
   RESET & BASE
   ============================================= */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-dark);
  background: var(--color-white);
  overflow-x: hidden;
}

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

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

ul, ol {
  list-style: none;
}

/* =============================================
   TYPOGRAPHY
   ============================================= */
h1 {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
}

h2 {
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 1.3;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
}

p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-dark);
}

/* =============================================
   LAYOUT HELPERS
   ============================================= */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 72px 0;
}

.section-light {
  background: var(--color-light-bg);
}

.section-title {
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  text-align: center;
  color: var(--color-muted);
  max-width: 560px;
  margin: 0 auto 48px;
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-base);
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), opacity var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: #155a99;
  border-color: #155a99;
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn-outline-white {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255,255,255,0.7);
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--color-white);
}

.btn-whatsapp {
  background: var(--color-whatsapp);
  color: var(--color-white);
  border-color: var(--color-whatsapp);
}

.btn-whatsapp:hover {
  background: #1da851;
  border-color: #1da851;
}

.btn-whatsapp::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 20px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M17.472 14.382c-.297-.149-1.758-.867-2.03-.967-.273-.099-.471-.148-.67.15-.197.297-.767.966-.94 1.164-.173.199-.347.223-.644.075-.297-.15-1.255-.463-2.39-1.475-.883-.788-1.48-1.761-1.653-2.059-.173-.297-.018-.458.13-.606.134-.133.298-.347.446-.52.149-.174.198-.298.298-.497.099-.198.05-.371-.025-.52-.075-.149-.669-1.612-.916-2.207-.242-.579-.487-.5-.669-.51-.173-.008-.371-.01-.57-.01-.198 0-.52.074-.792.372-.272.297-1.04 1.016-1.04 2.479 0 1.462 1.065 2.875 1.213 3.074.149.198 2.096 3.2 5.077 4.487.709.306 1.262.489 1.694.625.712.227 1.36.195 1.871.118.571-.085 1.758-.719 2.006-1.413.248-.694.248-1.289.173-1.413-.074-.124-.272-.198-.57-.347m-5.421 7.403h-.004a9.87 9.87 0 01-5.031-1.378l-.361-.214-3.741.982.998-3.648-.235-.374a9.86 9.86 0 01-1.51-5.26c.001-5.45 4.436-9.884 9.888-9.884 2.64 0 5.122 1.03 6.988 2.898a9.825 9.825 0 012.893 6.994c-.003 5.45-4.437 9.884-9.885 9.884m8.413-18.297A11.815 11.815 0 0012.05 0C5.495 0 .16 5.335.157 11.892c0 2.096.547 4.142 1.588 5.945L.057 24l6.305-1.654a11.882 11.882 0 005.683 1.448h.005c6.554 0 11.89-5.335 11.893-11.893a11.821 11.821 0 00-3.48-8.413z'/%3E%3C/svg%3E") center/contain no-repeat;
}

.btn-full {
  width: 100%;
}

/* =============================================
   HEADER
   ============================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: 0 2px 16px rgba(0,0,0,0.12);
}

.header-top {
  background: var(--color-dark);
  color: var(--color-white);
  font-size: 0.875rem;
  padding: 6px 0;
}

.header-top .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.header-top-phones {
  display: flex;
  gap: 20px;
  align-items: center;
}

.header-top-phones a {
  color: var(--color-white);
  transition: color var(--transition);
}

.header-top-phones a:hover {
  color: var(--color-accent);
}

.header-top-hours {
  color: rgba(255,255,255,0.7);
}

.header-main {
  background: var(--color-white);
  padding: 7px 0;
}

.header-main .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* Logo */
.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.header-logo-icon {
  font-size: 1.375rem;
  line-height: 1;
}

.header-logo-text {
  display: flex;
  flex-direction: column;
}

.header-logo-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.2;
}

.header-logo-city {
  font-size: 0.75rem;
  color: var(--color-muted);
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-dark);
  padding: 6px 12px;
  border-radius: var(--radius-base);
  transition: color var(--transition), background var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.nav-active {
  color: var(--color-primary);
}

.nav-link.nav-active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
}

/* Dropdown */
.nav-item {
  position: relative;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  min-width: 260px;
  padding: 16px 0 8px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity var(--transition), transform var(--transition);
  z-index: 100;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.nav-dropdown-link {
  display: block;
  padding: 10px 20px;
  font-size: 0.9375rem;
  color: var(--color-dark);
  transition: background var(--transition), color var(--transition);
}

.nav-dropdown-link:hover {
  background: var(--color-light-bg);
  color: var(--color-primary);
}

.nav-has-dropdown > .nav-link::after {
  content: ' ▾';
  font-size: 0.75rem;
}

/* Header CTA */
.header-cta {
  flex-shrink: 0;
  padding: 7px 16px;
  font-size: 0.875rem;
}

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
  z-index: 1100;
}

.burger-line {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.burger.open .burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.burger.open .burger-line:nth-child(2) {
  opacity: 0;
}
.burger.open .burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--color-white);
  padding: 100px 20px 32px;
  z-index: 900;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
  transform: translateY(-100%);
  transition: transform 0.35s ease;
}

.mobile-menu.open {
  transform: translateY(0);
}

.mobile-nav-link {
  display: block;
  padding: 14px 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-dark);
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition);
}

.mobile-nav-link:hover {
  color: var(--color-primary);
}

.mobile-nav-sub {
  padding-left: 16px;
}

.mobile-nav-sub .mobile-nav-link {
  font-size: 1rem;
  font-weight: 400;
}

/* =============================================
   HERO
   ============================================= */
.hero {
  position: relative;
  display: flex;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--color-dark) center/cover no-repeat;
  color: var(--color-white);
  overflow: hidden;
}

.hero-main {
  min-height: calc(100vh - 110px);
  padding-top: 90px;
  margin: 60px 50px 50px;
  border-radius: 24px;
  overflow: hidden;
}

.hero-inner {
  min-height: 400px;
  padding-top: 100px;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
  padding: 40px 20px;
}

.hero-content h1 {
  color: var(--color-white);
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: rgba(255,255,255,0.9);
  margin-bottom: 36px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* =============================================
   HERO BADGES
   ============================================= */
.hero-badges {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-top: 40px;
  flex-wrap: wrap;
}

.hero-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: rgba(255,255,255,0.95);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 40px;
  padding: 8px 18px;
  backdrop-filter: blur(4px);
}


/* =============================================
   STEPS (Как мы работаем)
   ============================================= */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  counter-reset: steps;
}

.step-item {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  position: relative;
}

.step-item:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(50% + 36px);
  right: calc(-50% + 36px);
  height: 2px;
  background: var(--color-border);
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1.375rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.step-item h3 {
  font-size: 1.0625rem;
}

.step-item p {
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* service-card без иконки-ссылки */
.service-card-cta {
  justify-content: center;
  align-items: center;
  text-align: center;
  background: var(--color-light-bg);
}

/* =============================================
   BREADCRUMB
   ============================================= */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.75);
  margin-top: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: rgba(255,255,255,0.75);
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--color-white);
}

.breadcrumb-sep {
  color: rgba(255,255,255,0.5);
}

.breadcrumb-current {
  color: var(--color-white);
}

/* =============================================
   SERVICE CARDS
   ============================================= */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px 28px;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.service-card-icon {
  font-size: 2.5rem;
  line-height: 1;
}

.service-card h3 {
  color: var(--color-dark);
}

.service-card p {
  color: var(--color-muted);
  font-size: 0.9375rem;
  flex: 1;
}

.service-card-link {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: color var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.service-card-link::after {
  content: '→';
}

.service-card-link:hover {
  color: #1255a0;
}

.service-card-price {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* =============================================
   PRICE TABLE
   ============================================= */
.price-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-card);
}

.price-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.price-table thead {
  background: var(--color-dark);
  color: var(--color-white);
}

.price-table thead th {
  padding: 16px 20px;
  text-align: left;
  font-size: 0.9375rem;
  font-weight: 600;
}

.price-table thead th:last-child {
  text-align: right;
}

.price-table tbody tr:nth-child(odd) {
  background: var(--color-light-bg);
}

.price-table tbody tr:nth-child(even) {
  background: var(--color-white);
}

.price-table tbody tr:hover {
  background: #eaf2fb;
}

.price-table td {
  padding: 14px 20px;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--color-border);
}

.price-table td:first-child {
  font-weight: 500;
}

.price-table td:last-child {
  text-align: right;
  color: var(--color-primary);
  font-weight: 600;
  white-space: nowrap;
}

/* =============================================
   ADVANTAGES
   ============================================= */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.advantage-item {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.advantage-icon {
  font-size: 2.75rem;
  line-height: 1;
}

.advantage-item h3 {
  font-size: 1.0625rem;
  color: var(--color-dark);
}

.advantage-item p {
  font-size: 0.9rem;
  color: var(--color-muted);
}

/* =============================================
   REVIEWS
   ============================================= */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-card {
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.review-stars {
  color: #F5A623;
  font-size: 1.125rem;
  letter-spacing: 2px;
}

.review-text {
  color: var(--color-dark);
  font-size: 0.9375rem;
  line-height: 1.7;
  flex: 1;
}

.review-text::before {
  content: '«';
}

.review-text::after {
  content: '»';
}

.review-author {
  font-weight: 600;
  color: var(--color-dark);
  font-size: 0.9375rem;
}

/* =============================================
   CONTACT FORM
   ============================================= */
.contact-form {
  max-width: 560px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-dark);
}

.form-label .required {
  color: #e53e3e;
  margin-left: 2px;
}

.form-input,
.form-textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  padding: 12px 16px;
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  color: var(--color-dark);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26,111,191,0.12);
}

.form-input.error,
.form-textarea.error {
  border-color: #e53e3e;
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.form-checkbox {
  margin-top: 3px;
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  cursor: pointer;
}

.form-checkbox-label {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.5;
  cursor: pointer;
}

.form-checkbox-label a {
  color: var(--color-primary);
  text-decoration: underline;
}

.form-error-msg {
  font-size: 0.8125rem;
  color: #e53e3e;
  display: none;
}

.form-error-msg.visible {
  display: block;
}

.form-success {
  display: none;
  background: #d4edda;
  border: 1px solid #c3e6cb;
  border-radius: var(--radius-card);
  padding: 24px;
  text-align: center;
  color: #155724;
}

.form-success.visible {
  display: block;
}

.form-success-icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
}

/* =============================================
   CTA SECTION
   ============================================= */
.cta-section {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 64px 0;
  text-align: center;
}

.cta-section h2 {
  color: var(--color-white);
  margin-bottom: 20px;
}

.cta-phones {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.cta-phone {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  transition: color var(--transition);
}

.cta-phone:hover {
  color: rgba(255, 255, 255, 0.75);
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.8);
  padding: 56px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 48px;
}

.footer-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 20px;
}

.footer-nav-link {
  display: block;
  padding: 5px 0;
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.75);
  transition: color var(--transition);
}

.footer-nav-link:hover {
  color: var(--color-white);
}

.footer-contact-item {
  display: flex;
  gap: 8px;
  align-items: flex-start;
  padding: 5px 0;
  font-size: 0.9375rem;
}

.footer-contact-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-contact-item a {
  color: rgba(255,255,255,0.75);
  transition: color var(--transition);
}

.footer-contact-item a:hover {
  color: var(--color-white);
}

.footer-requisites {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.8;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

.footer-bottom-links a {
  font-size: 0.875rem;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}

.footer-bottom-links a:hover {
  color: var(--color-white);
}

/* =============================================
   COOKIE BANNER
   ============================================= */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(28,28,28,0.97);
  color: var(--color-white);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  z-index: 2000;
  flex-wrap: wrap;
  box-shadow: 0 -4px 24px rgba(0,0,0,0.2);
}

.cookie-banner.hidden {
  display: none;
}

.cookie-text {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.85);
  flex: 1;
  min-width: 200px;
}

.cookie-text a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* =============================================
   PAGE OFFSET (for fixed header)
   ============================================= */
.page-offset {
  height: 108px;
}

/* =============================================
   COMPARISON CARDS (тёплый пол)
   ============================================= */
.comparison-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.comparison-card {
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.comparison-card-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-dark);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
}

.comparison-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.comparison-list li {
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-dark);
}

.comparison-price {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary);
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

/* =============================================
   STEPS — 5 COLUMNS VARIANT
   ============================================= */
.steps-grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 24px;
  counter-reset: steps;
}

.steps-grid-5 .step-item:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 28px;
  left: calc(50% + 36px);
  right: calc(-50% + 36px);
  height: 2px;
  background: var(--color-border);
}

@media (max-width: 992px) {
  .steps-grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }

  .steps-grid-5 .step-item:not(:last-child)::after {
    display: none;
  }
}

@media (max-width: 480px) {
  .steps-grid-5 {
    grid-template-columns: 1fr;
  }
}

/* =============================================
   PRICE NOTE
   ============================================= */
.price-note {
  margin-top: 20px;
  padding: 16px 20px;
  background: var(--color-light-bg);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-base) var(--radius-base) 0;
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.6;
}

/* =============================================
   MATERIALS GRID
   ============================================= */
.materials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.material-card {
  background: var(--color-light-bg);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  border-top: 4px solid var(--color-primary);
}

.material-card h3 {
  margin-bottom: 10px;
  color: var(--color-dark);
}

.material-card p {
  font-size: 0.9375rem;
  color: var(--color-muted);
}

@media (max-width: 992px) {
  .materials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* =============================================
   FAQ ACCORDION
   ============================================= */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--color-white);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-dark);
  text-align: left;
  transition: background var(--transition);
}

.faq-question:hover {
  background: var(--color-light-bg);
}

.faq-item.open .faq-question {
  color: var(--color-primary);
  background: var(--color-light-bg);
}

.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-light-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--color-primary);
  transition: transform var(--transition), background var(--transition);
  line-height: 1;
}

.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--color-primary);
  color: var(--color-white);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.7;
}

/* =============================================
   MOBILE MENU CTA WRAPPER
   ============================================= */
.mobile-menu-cta {
  padding-top: 20px;
}

/* =============================================
   HERO — SHORT VARIANT (контакты, 300px)
   ============================================= */
.hero-short {
  min-height: 300px;
}

/* =============================================
   CONTACTS PAGE
   ============================================= */
.contacts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contacts-info h2 {
  margin-bottom: 28px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-item:first-of-type {
  border-top: 1px solid var(--color-border);
}

.contact-item-icon {
  font-size: 1.375rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
}

.contact-item-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-item-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.contact-item-value {
  font-size: 1rem;
  color: var(--color-dark);
  line-height: 1.5;
}

.contact-item-value a {
  color: var(--color-dark);
  transition: color var(--transition);
  display: block;
}

.contact-item-value a:hover {
  color: var(--color-primary);
}

.contact-item-value .phone-link {
  font-size: 1.125rem;
  font-weight: 600;
}

.contacts-map-caption {
  margin-top: 10px;
  font-size: 0.875rem;
  color: var(--color-muted);
  text-align: center;
}

.contacts-map iframe {
  display: block;
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
}

/* =============================================
   REQUISITES
   ============================================= */
.requisites-block {
  max-width: 480px;
  margin: 0 auto;
  background: var(--color-white);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px 36px;
  line-height: 2;
  font-size: 0.9375rem;
  color: var(--color-dark);
}

.requisites-block strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 4px;
}

/* =============================================
   CONTACTS ADVANTAGES
   ============================================= */
.contacts-advantages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.contacts-advantage {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.contacts-advantage-icon {
  font-size: 2.5rem;
  line-height: 1;
}

.contacts-advantage-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 4px;
}

.contacts-advantage p {
  font-size: 0.9rem;
  color: var(--color-muted);
}

@media (max-width: 992px) {
  .contacts-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .contacts-advantages {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .contacts-advantage {
    flex-direction: row;
    text-align: left;
    align-items: flex-start;
  }

  .contacts-advantage-icon {
    font-size: 1.75rem;
    flex-shrink: 0;
  }
}

/* =============================================
   INTRO TEXT
   ============================================= */
.intro-text {
  max-width: 800px;
  margin: 0 auto;
}

.intro-text p + p {
  margin-top: 16px;
}

/* =============================================
   RESPONSIVE — 1200px
   ============================================= */
@media (max-width: 1200px) {
  .container {
    max-width: 960px;
  }

}

/* =============================================
   RESPONSIVE — 992px
   ============================================= */
@media (max-width: 992px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.625rem; }

  .nav,
  .header-cta {
    display: none;
  }

  .burger {
    display: flex;
  }

  .mobile-menu {
    display: block;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .step-item:not(:last-child)::after {
    display: none;
  }

  .hero-badges {
    gap: 12px;
  }
}

/* =============================================
   RESPONSIVE — 768px
   ============================================= */
@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }

  .hero-main {
    min-height: 100svh;
    margin: 52px 12px 12px;
    border-radius: 16px;
  }

  .hero-inner {
    min-height: 320px;
  }

  .cta-phones {
    gap: 16px;
  }

  .cta-phone {
    font-size: 1.25rem;
  }

  .reviews-grid,
  .comparison-grid,
  .materials-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* =============================================
   POLICY CONTENT
   ============================================= */
.policy-content {
  max-width: 800px;
  margin: 0 auto;
}

.policy-content h2 {
  font-size: 1.25rem;
  margin: 36px 0 12px;
  color: var(--color-dark);
}

.policy-content h2:first-child {
  margin-top: 0;
}

.policy-content h3 {
  font-size: 1.05rem;
  margin: 24px 0 8px;
  color: var(--color-dark);
}

.policy-content p {
  margin-bottom: 14px;
  line-height: 1.75;
  color: var(--color-text);
}

.policy-content ul {
  padding-left: 22px;
  margin-bottom: 14px;
}

.policy-content li {
  margin-bottom: 6px;
  line-height: 1.75;
  color: var(--color-text);
}

.policy-updated {
  font-size: 0.875rem;
  color: var(--color-muted);
  margin-bottom: 32px;
}

/* =============================================
   ERROR PAGE (404)
   ============================================= */
.error-page {
  text-align: center;
  padding: 80px 0 100px;
}

.error-page-code {
  font-size: 9rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
  display: block;
}

.error-page-title {
  font-size: 1.875rem;
  margin: 16px 0 12px;
}

.error-page-text {
  font-size: 1rem;
  color: var(--color-muted);
  max-width: 480px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.error-page-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 36px;
}

.error-page-links a {
  color: var(--color-primary);
  font-size: 0.9375rem;
}

.error-page-links a:hover {
  text-decoration: underline;
}

@media (max-width: 480px) {
  .error-page-code {
    font-size: 6rem;
  }

  .error-page-title {
    font-size: 1.375rem;
  }
}

/* =============================================
   RESPONSIVE — 480px
   ============================================= */
@media (max-width: 480px) {
  h1 { font-size: 1.625rem; }
  h2 { font-size: 1.375rem; }

  .btn {
    white-space: normal;
    text-align: center;
  }

  .price-table td,
  .price-table th {
    white-space: normal;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .advantages-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .advantage-item {
    display: grid;
    grid-template-columns: 2.5rem 1fr;
    grid-template-rows: auto auto;
    column-gap: 14px;
    text-align: left;
    align-items: start;
  }

  .advantage-icon {
    font-size: 1.75rem;
    grid-row: 1 / 3;
    padding-top: 2px;
  }

  .steps-grid {
    grid-template-columns: 1fr;
  }

  .hero-badges {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  .hero-badge {
    font-size: 0.875rem;
    padding: 7px 14px;
  }

  .price-table td,
  .price-table th {
    padding: 10px 12px;
    font-size: 0.875rem;
  }

  .cookie-banner {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-top-hours {
    display: none;
  }

  .cta-phones {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }
}

/* ==============================
   HERO INNER (inner pages)
   ============================== */
.hero-inner {
  background: linear-gradient(135deg, #0d3b6e 0%, #1A6FBF 100%);
  position: relative;
  overflow: hidden;
}

.hero-inner::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 60px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 60'%3E%3Cpath fill='%23ffffff' fill-opacity='1' d='M0,30 C360,60 1080,0 1440,30 L1440,60 L0,60 Z'/%3E%3C/svg%3E");
  background-size: cover;
  background-repeat: no-repeat;
}

.hero-inner::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  pointer-events: none;
}

.hero-circle {
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  pointer-events: none;
}

.hero-inner-content {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 40px;
  padding-bottom: 70px;
}

.hero-inner-text h1 {
  color: #ffffff;
  margin-bottom: 12px;
}

.hero-inner-text .hero-subtitle {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.125rem;
  margin-bottom: 24px;
}

.hero-inner-icon {
  font-size: 8rem;
  opacity: 0.15;
  user-select: none;
  line-height: 1;
}

.hero-contact-block {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  padding: 16px 24px;
  display: inline-flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-contact-block a.hero-phone {
  color: #ffffff;
  font-weight: 700;
  font-size: 1.125rem;
  text-decoration: none;
}

.hero-contact-block a.hero-phone:hover {
  text-decoration: underline;
}

.hero-contact-divider {
  color: rgba(255, 255, 255, 0.4);
}

.btn-whatsapp--small {
  padding: 8px 16px;
  font-size: 0.875rem;
  border-radius: 999px;
}

.breadcrumb {
  margin-bottom: 20px;
}

.breadcrumb a,
.breadcrumb span {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  text-decoration: none;
}

.breadcrumb a:hover {
  color: #ffffff;
}

.breadcrumb .breadcrumb-separator {
  margin: 0 8px;
  color: rgba(255, 255, 255, 0.4);
}

.breadcrumb .breadcrumb-current {
  color: rgba(255, 255, 255, 0.9);
}

@media (max-width: 768px) {
  .hero-inner::after {
    height: 40px;
  }
  .hero-inner-content {
    grid-template-columns: 1fr;
    padding-bottom: 50px;
  }
  .hero-inner-icon {
    display: none;
  }
  .hero-contact-block {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}