/* =============================================================
   STYLE.CSS — Мойка радиаторов Калининград
   Mobile-first, современный минималистичный стиль
   ============================================================= */

/* -------------------------------------------------------------
   1. CUSTOM PROPERTIES (переменные — меняй цвета здесь)
   ------------------------------------------------------------- */
:root {
  /* Основная палитра — тёмно-синий + акцентный оранжевый */
  --color-primary:   #1a2742;   /* Тёмно-синий — заголовки, фоны */
  --color-primary-dark: #111b30;
  --color-accent:    #f05a00;   /* Оранжевый — кнопки, акценты */
  --color-accent-hover: #d94f00;

  --color-bg:        #ffffff;
  --color-bg-light:  #f6f7fa;
  --color-bg-dark:   #1a2742;

  --color-text:      #1e2533;
  --color-text-muted:#5e6880;
  --color-text-light:#ffffff;

  --color-border:    #e0e4ee;
  --color-success:   #1a8f56;

  /* Типографика */
  --font-base: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-sm:   0.875rem;
  --font-size-base: 1rem;
  --font-size-lg:   1.125rem;
  --font-size-xl:   1.25rem;
  --font-size-2xl:  1.5rem;
  --font-size-3xl:  2rem;
  --font-size-4xl:  2.5rem;

  /* Радиусы */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;

  /* Отступы */
  --section-gap: 5rem;
  --container:   1200px;
  --gutter:      1.25rem;

  /* Тени */
  --shadow-sm:  0 2px 8px rgba(26,39,66,.08);
  --shadow-md:  0 4px 24px rgba(26,39,66,.12);
  --shadow-lg:  0 8px 40px rgba(26,39,66,.16);

  /* Переходы */
  --transition: 0.22s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--color-accent-hover); }
a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

ul, ol { list-style: none; }

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

/* -------------------------------------------------------------
   3. UTILITIES
   ------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section-gap { padding: var(--section-gap) 0; }

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

.section-title {
  font-size: var(--font-size-2xl);
  margin-bottom: 0.75rem;
  text-align: center;
}
.section-title--light { color: var(--color-text-light); }

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  text-align: center;
  max-width: 680px;
  margin: 0 auto 2.5rem;
}
.section-subtitle--light { color: rgba(255,255,255,.7); }

/* -------------------------------------------------------------
   4. BUTTONS
   ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), transform var(--transition),
              box-shadow var(--transition);
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #fff;
  box-shadow: 0 4px 16px rgba(240,90,0,.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
}

.btn-block {
  width: 100%;
  display: flex;
}

/* -------------------------------------------------------------
   5. SITE HEADER
   ------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 1rem;
}

/* Логотип */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-primary);
  font-size: var(--font-size-lg);
  font-weight: 700;
  text-decoration: none;
  flex-shrink: 0;
}
.logo:hover { color: var(--color-primary); }
.logo-icon { font-size: 1.4rem; color: var(--color-accent); }
.logo-text strong { color: var(--color-accent); }

/* Desktop nav */
.header-nav {
  display: none;
  align-items: center;
  gap: 1.5rem;
}
.header-nav a {
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  transition: color var(--transition);
}
.header-nav a:hover { color: var(--color-accent); }

/* Burger */
.burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}
.burger:hover { background: var(--color-bg-light); }
.burger span {
  display: block;
  height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem var(--gutter) 1.25rem;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}
.mobile-nav.is-open { display: flex; }
.mobile-nav a {
  padding: 0.6rem 0;
  color: var(--color-text);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav a:last-child { border-bottom: none; margin-top: 0.5rem; }

/* -------------------------------------------------------------
   6. HERO — первый экран
   ------------------------------------------------------------- */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #243558 100%);
  color: var(--color-text-light);
  padding: 3.5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

/* Декоративная сетка на фоне */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.hero-grid {
  display: grid;
  gap: 2.5rem;
  position: relative;
}

.hero h1 {
  color: #fff;
  font-size: clamp(1.75rem, 5vw, 3rem);
  margin-bottom: 1rem;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,.85);
  margin-bottom: 1.5rem;
  max-width: 520px;
}

.hero-price {
  display: inline-block;
  font-size: var(--font-size-xl);
  color: rgba(255,255,255,.7);
  margin-bottom: 1.75rem;
  border-left: 3px solid var(--color-accent);
  padding-left: 0.75rem;
}
.price-value {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: #fff;
}

.hero-benefits {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 2rem;
}
.hero-benefits li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: var(--font-size-base);
  color: rgba(255,255,255,.9);
}
.benefit-icon {
  color: var(--color-accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 0.1em;
}

/* -------------------------------------------------------------
   7. FORM CARD
   ------------------------------------------------------------- */
.form-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.form-card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
  text-align: center;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.form-group input[type="text"],
.form-group input[type="tel"] {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-base);
  font-family: var(--font-base);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-light);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus {
  border-color: var(--color-accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(240,90,0,.12);
}

.form-group input.is-invalid {
  border-color: #e53e3e;
}

.field-error {
  display: block;
  font-size: var(--font-size-sm);
  color: #e53e3e;
  margin-top: 0.3rem;
  min-height: 1.2em;
}

/* Checkbox */
.form-group--checkbox { margin-bottom: 1.25rem; }
.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  line-height: 1.5;
}
.checkbox-label input[type="checkbox"] {
  margin-top: 0.2em;
  accent-color: var(--color-accent);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  cursor: pointer;
}

.form-success {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  background: #ebf8f1;
  border: 1px solid #9ae6b4;
  border-radius: var(--radius-sm);
  color: var(--color-success);
  font-weight: 600;
  text-align: center;
  font-size: var(--font-size-sm);
}

/* -------------------------------------------------------------
   8. SYMPTOMS
   ------------------------------------------------------------- */
.symptoms-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.symptom-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: box-shadow var(--transition), transform var(--transition);
}
.symptom-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.symptom-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: block;
}

.symptom-card h3 {
  font-size: var(--font-size-base);
  margin-bottom: 0.4rem;
  color: var(--color-primary);
}

.symptom-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* -------------------------------------------------------------
   9. HOW IT WORKS — Steps
   ------------------------------------------------------------- */
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 2.5rem;
  counter-reset: steps;
}

.step {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 1.25rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(255,255,255,.1);
  position: relative;
}
.step:last-child { border-bottom: none; }

.step-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  padding-top: 0.15em;
  flex-shrink: 0;
}

.step-body h3 {
  font-size: var(--font-size-lg);
  color: #fff;
  margin-bottom: 0.4rem;
}

.step-body p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.7);
  line-height: 1.65;
}

/* -------------------------------------------------------------
   10. NO-DISASSEMBLY — сравнение
   ------------------------------------------------------------- */
.no-disassembly-grid {
  display: grid;
  gap: 2.5rem;
  margin-top: 2.5rem;
}

.no-disassembly-text p {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.problem-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.problem-list li {
  padding: 1rem 1.25rem;
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-accent);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  line-height: 1.6;
}
.problem-list li strong {
  display: block;
  color: var(--color-primary);
  margin-bottom: 0.3rem;
  font-size: var(--font-size-base);
}

/* Comparison block */
.comparison-block {
  display: grid;
  gap: 1rem;
}

.comparison-item {
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
}

.comparison-label {
  display: block;
  font-weight: 700;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}

.comparison-item ul {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.comparison-item li { font-size: var(--font-size-sm); line-height: 1.5; }

.comparison-bad {
  background: #fff3f3;
  border: 1px solid #feb2b2;
}
.comparison-bad .comparison-label { color: #c53030; }
.comparison-bad li { color: #742a2a; }

.comparison-good {
  background: #f0fff7;
  border: 1px solid #9ae6b4;
}
.comparison-good .comparison-label { color: var(--color-success); }
.comparison-good li { color: #22543d; }

/* -------------------------------------------------------------
   11. INCLUDES
   ------------------------------------------------------------- */
.includes-grid {
  display: grid;
  gap: 0.75rem;
  margin-top: 2.5rem;
}

.includes-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-text);
  transition: box-shadow var(--transition);
}
.includes-item:hover { box-shadow: var(--shadow-sm); }
.includes-icon { font-size: 1.35rem; flex-shrink: 0; }

/* -------------------------------------------------------------
   12. PRICE
   ------------------------------------------------------------- */
.price-grid {
  display: grid;
  gap: 2rem;
  margin-top: 2.5rem;
  align-items: start;
}

.price-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.price-card--main {
  border-color: var(--color-accent);
  box-shadow: 0 4px 32px rgba(240,90,0,.15);
}

.price-card-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.price-card-value {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
  line-height: 1;
}

.price-card-note {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* Price factors */
.price-factors {
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.price-factors h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 1.25rem;
}

.price-factors ul {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.price-factors li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.factor-icon { font-size: 1.35rem; flex-shrink: 0; margin-top: 0.1em; }

.price-factors li > div {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.price-factors li strong {
  font-size: var(--font-size-base);
  color: var(--color-primary);
}

.price-factors li span {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* -------------------------------------------------------------
   13. SERVICES — карточки
   ------------------------------------------------------------- */
.services-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  position: relative;
}
.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.service-card-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  align-self: flex-start;
}

.service-card h3 {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin: 0;
}

.service-card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  flex: 1;
}

.service-card .btn { align-self: flex-start; margin-top: 0.5rem; }

/* -------------------------------------------------------------
   14. WHY US
   ------------------------------------------------------------- */
.why-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.why-item {
  padding: 1.5rem;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}
.why-item:hover { box-shadow: var(--shadow-sm); }

.why-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.75rem;
}

.why-item h3 {
  font-size: var(--font-size-base);
  margin-bottom: 0.4rem;
}

.why-item p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* -------------------------------------------------------------
   15. FAQ
   ------------------------------------------------------------- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 2.5rem;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

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

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1.1rem 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary);
  font-family: var(--font-base);
  text-align: left;
  transition: background var(--transition);
}
.faq-question:hover { background: var(--color-bg-light); }

.faq-icon {
  display: inline-block;
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  position: relative;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}
.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--color-primary);
  border-radius: 2px;
}
.faq-icon::before { width: 10px; height: 2px; top: 50%; left: 50%; transform: translate(-50%,-50%); }
.faq-icon::after  { width: 2px; height: 10px; top: 50%; left: 50%; transform: translate(-50%,-50%); transition: transform var(--transition), opacity var(--transition); }

.faq-question[aria-expanded="true"] .faq-icon {
  background: var(--color-accent);
  border-color: var(--color-accent);
  transform: rotate(45deg);
}
.faq-question[aria-expanded="true"] .faq-icon::before,
.faq-question[aria-expanded="true"] .faq-icon::after { background: #fff; }

.faq-answer {
  padding: 0 1.25rem 1.25rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  animation: fadeIn .2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* -------------------------------------------------------------
   16. FINAL CTA
   ------------------------------------------------------------- */
.final-cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, #243558 100%);
}

.final-cta-inner {
  display: grid;
  gap: 2.5rem;
  align-items: start;
}

.cta-text h2 {
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  color: #fff;
  margin-bottom: 1rem;
  line-height: 1.25;
}

.cta-text p {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,.8);
  margin-bottom: 1.5rem;
}

.cta-reassurance {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.cta-reassurance li {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.7);
  font-weight: 500;
}

/* -------------------------------------------------------------
   17. SITE FOOTER
   ------------------------------------------------------------- */
.site-footer {
  background: var(--color-primary-dark);
  padding: 1.75rem 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
}

.footer-copy {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.4);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.footer-nav a {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.5);
  text-decoration: none;
  transition: color var(--transition);
}
.footer-nav a:hover { color: rgba(255,255,255,.9); }

/* =============================================================
   MEDIA QUERIES — tablet (≥ 640px)
   ============================================================= */
@media (min-width: 640px) {

  .symptoms-grid    { grid-template-columns: repeat(2, 1fr); }
  .includes-grid    { grid-template-columns: repeat(2, 1fr); }
  .why-grid         { grid-template-columns: repeat(2, 1fr); }
  .services-grid    { grid-template-columns: repeat(2, 1fr); }
  .comparison-block { grid-template-columns: repeat(2, 1fr); }

  .service-card--featured { grid-column: 1 / -1; flex-direction: row; align-items: center; }
  .service-card--featured p { flex: 1; }

}

/* =============================================================
   MEDIA QUERIES — desktop (≥ 960px)
   ============================================================= */
@media (min-width: 960px) {

  /* Header */
  .header-nav { display: flex; }
  .burger     { display: none; }

  /* Hero grid — 2 колонки */
  .hero { padding: 5rem 0 5.5rem; }
  .hero-grid {
    grid-template-columns: 1fr 440px;
    gap: 4rem;
    align-items: center;
  }

  /* Symptoms — 3 колонки */
  .symptoms-grid { grid-template-columns: repeat(3, 1fr); }

  /* Steps — немного шире */
  .step { grid-template-columns: 72px 1fr; }

  /* No-disassembly — 2 колонки */
  .no-disassembly-grid { grid-template-columns: 1fr 1fr; align-items: start; }

  /* Price — 2 колонки */
  .price-grid { grid-template-columns: 380px 1fr; }

  /* Services — 3 колонки */
  .services-grid { grid-template-columns: repeat(3, 1fr); }
  .service-card--featured { grid-column: auto; flex-direction: column; }
  .service-card--featured p { flex: none; }

  /* Why — 3 колонки */
  .why-grid { grid-template-columns: repeat(3, 1fr); }

  /* Final CTA — 2 колонки */
  .final-cta-inner { grid-template-columns: 1fr 440px; align-items: center; }

  /* Footer */
  .footer-inner { flex-direction: row; justify-content: space-between; text-align: left; }

  /* Section titles */
  .section-title { font-size: var(--font-size-3xl); }

}

/* =============================================================
   MEDIA QUERIES — large desktop (≥ 1200px)
   ============================================================= */
@media (min-width: 1200px) {
  .includes-grid { grid-template-columns: repeat(4, 1fr); }
}

/* =============================================================
   ACCESSIBILITY — reduced motion
   ============================================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}

/* =============================================================
   ДОПОЛНИТЕЛЬНЫЕ БЛОКИ — посадочная «мойка со снятием»
   ============================================================= */

/* -------------------------------------------------------------
   ХЛЕБНЫЕ КРОШКИ
   ------------------------------------------------------------- */
.breadcrumb {
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
  padding: 0.6rem 0;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.breadcrumb-list li {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.breadcrumb-list li:not(:last-child)::after {
  content: '›';
  color: var(--color-border);
}

.breadcrumb-list a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.breadcrumb-list a:hover { color: var(--color-accent); }

.breadcrumb-list [aria-current="page"] {
  color: var(--color-text);
  font-weight: 500;
}

/* -------------------------------------------------------------
   INSIGHT — ключевой смысловой блок с диаграммой
   ------------------------------------------------------------- */
.insight-inner {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.insight-text p {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,.8);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}
.insight-text p:last-child { margin-bottom: 0; }

/* Диаграмма радиаторного блока */
.radiator-diagram {
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  max-width: 420px;
  margin: 0 auto;
}

.rd-label {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.5);
  text-align: center;
  font-weight: 500;
}
.rd-label--top  { margin-bottom: 1rem; }
.rd-label--bottom { margin-top: 1rem; }

.rd-stack {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,.15);
}

/* Блок каждого радиатора */
.rd-block {
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.rd-block--ac   { background: rgba(100,180,255,.15); color: #93c5fd; }
.rd-block--cool { background: rgba(100,220,140,.12); color: #6ee7b7; }

.rd-fins {
  display: flex;
  gap: 3px;
  flex-shrink: 0;
}
.rd-fins span {
  display: block;
  width: 3px;
  height: 28px;
  border-radius: 2px;
  background: currentColor;
  opacity: .5;
}

/* Межрадиаторное пространство — зона загрязнения */
.rd-gap {
  background: rgba(240,90,0,.15);
  border-top: 1px dashed rgba(240,90,0,.4);
  border-bottom: 1px dashed rgba(240,90,0,.4);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.rd-gap-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: #fca669;
  line-height: 1.4;
}

.rd-dirt-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 3px;
  max-width: 80px;
  flex-shrink: 0;
}
.rd-dirt-dots span {
  display: block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(240,90,0,.6);
}

/* -------------------------------------------------------------
   STEPS — вариант на светлом фоне (посадочная)
   ------------------------------------------------------------- */
.steps-list--light .step--light {
  border-bottom-color: var(--color-border);
}

.step--light .step-body h3 { color: var(--color-primary); }
.step--light .step-body p  { color: var(--color-text-muted); }

/* -------------------------------------------------------------
   COMPARE — сравнительный блок
   ------------------------------------------------------------- */
.compare-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.compare-col {
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  border: 1px solid var(--color-border);
}

.compare-col--disassembly {
  border-color: var(--color-accent);
  background: #fff8f5;
}

.compare-col-title {
  font-size: var(--font-size-base);
  margin-bottom: 1.25rem;
}

.compare-label {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  border-radius: 4px;
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.compare-label--neutral {
  background: var(--color-bg-light);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

.compare-label--accent {
  background: var(--color-accent);
  color: #fff;
}

.compare-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.compare-list li {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--color-bg-light);
  line-height: 1.5;
}

.compare-list-note {
  color: #742a2a !important;
  background: #fff3f3 !important;
}

.compare-list-ok {
  color: #22543d !important;
  background: #f0fff7 !important;
  font-weight: 500;
}

/* -------------------------------------------------------------
   FOR CARS — для каких авто
   ------------------------------------------------------------- */
.for-cars-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.for-cars-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: box-shadow var(--transition);
}
.for-cars-item:hover { box-shadow: var(--shadow-sm); }

.for-cars-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: 0.75rem;
}

.for-cars-item h3 {
  font-size: var(--font-size-base);
  margin-bottom: 0.4rem;
}

.for-cars-item p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.for-cars-note {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-accent);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  text-align: center;
}

/* -------------------------------------------------------------
   SERVICES — 2-колоночная сетка (для страницы со снятием)
   ------------------------------------------------------------- */
.services-grid--2col {
  grid-template-columns: 1fr;
}

/* -------------------------------------------------------------
   MEDIA QUERIES — адаптив для новых блоков
   ------------------------------------------------------------- */
@media (min-width: 640px) {
  .for-cars-grid         { grid-template-columns: repeat(2, 1fr); }
  .compare-grid          { grid-template-columns: repeat(2, 1fr); }
  .services-grid--2col   { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 960px) {
  .insight-inner { grid-template-columns: 1fr 420px; }
  .for-cars-grid { grid-template-columns: repeat(4, 1fr); }
}

/* =============================================================
   ДОПОЛНИТЕЛЬНЫЕ БЛОКИ — посадочная «промывка системы охлаждения»
   ============================================================= */

/* -------------------------------------------------------------
   INNER PROCESS — что происходит внутри системы (секция на тёмном фоне)
   ------------------------------------------------------------- */
.inner-process-inner {
  display: grid;
  gap: 3rem;
  align-items: start;
}

.inner-process-text p {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,.8);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}
.inner-process-text p:last-child { margin-bottom: 0; }

/* Карточки с проблемами */
.inner-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.inner-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  transition: background var(--transition);
}
.inner-card:hover { background: rgba(255,255,255,.1); }

.inner-card-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 0.5rem;
}

.inner-card h3 {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.35rem;
}

.inner-card p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.65);
  line-height: 1.55;
}

/* -------------------------------------------------------------
   ANTIFREEZE COMBO — промывка + замена антифриза
   ------------------------------------------------------------- */
.combo-inner {
  display: grid;
  gap: 2.5rem;
  margin-top: 2.5rem;
  align-items: center;
}

.combo-text p {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

.combo-text .btn { margin-top: 0.5rem; }

/* Визуальная схема шагов */
.combo-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.combo-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  min-width: 100px;
  text-align: center;
  flex: 1;
  max-width: 140px;
}

.combo-step--done   { background: #fff8f5; border: 1px solid rgba(240,90,0,.25); }
.combo-step--next   { background: #f0fff7; border: 1px solid rgba(26,143,86,.25); }
.combo-step--result { background: var(--color-bg-light); border: 1px solid var(--color-border); }

.combo-step-icon {
  font-size: 1.75rem;
  line-height: 1;
}

.combo-step-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
}

.combo-arrow {
  font-size: 1.25rem;
  color: var(--color-border);
  font-weight: 700;
  flex-shrink: 0;
  padding: 0 0.25rem;
}

/* -------------------------------------------------------------
   COMPARE-SERVICES — промывка vs мойка (на этой странице)
   ------------------------------------------------------------- */
.compare-col--this {
  border-color: var(--color-accent);
  background: #fff8f5;
}

.compare-col--other {
  background: var(--color-bg-light);
}

.compare-col-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-weight: 500;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.compare-note {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-bg-light);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-accent);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  text-align: center;
}

/* -------------------------------------------------------------
   АДАПТИВ для новых блоков
   ------------------------------------------------------------- */
@media (min-width: 640px) {
  .combo-steps { flex-wrap: nowrap; }
}

@media (min-width: 960px) {
  .inner-process-inner { grid-template-columns: 1fr 1fr; align-items: start; }
  .combo-inner         { grid-template-columns: 1fr 420px; }
}

/* =============================================================
   ДОПОЛНИТЕЛЬНЫЕ БЛОКИ — посадочная «замена антифриза»
   ============================================================= */

/* -------------------------------------------------------------
   WHY-REPLACE — зачем менять антифриз (тёмный фон)
   ------------------------------------------------------------- */
.why-replace-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.why-replace-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 0 1rem;
  align-items: start;
  transition: background var(--transition);
}
.why-replace-card:hover { background: rgba(255,255,255,.1); }

.why-replace-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  grid-row: 1 / 3;
  padding-top: 0.15em;
}

.why-replace-card h3 {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.35rem;
}

.why-replace-card p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,.7);
  line-height: 1.6;
}

/* -------------------------------------------------------------
   FLUSH-COMBO — когда промывка + замена (светлый фон)
   ------------------------------------------------------------- */
.flush-inner {
  display: grid;
  gap: 2.5rem;
  margin-top: 2.5rem;
  align-items: start;
}

.flush-text p {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}
.flush-text .btn { margin-top: 0.25rem; }

/* Наглядные сценарии */
.flush-scenarios {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.flush-scenario {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  overflow: hidden;
}

.flush-scenario-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  display: inline-block;
}

.flush-scenario-title--ok {
  background: #f0fff7;
  color: #22543d;
  border: 1px solid #9ae6b4;
}

.flush-scenario-title--warn {
  background: #fffbeb;
  color: #744210;
  border: 1px solid #fbd38d;
}

.flush-scenario-steps {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  counter-reset: flush-steps;
}

.flush-scenario-steps li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--color-bg-light);
  counter-increment: flush-steps;
}

.flush-scenario-steps li::before {
  content: counter(flush-steps);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}

.flush-step-highlight {
  background: #fffbeb !important;
  color: #744210 !important;
  font-weight: 600;
  border: 1px solid #fbd38d;
}

.flush-step-highlight::before {
  background: #fbd38d !important;
  color: #744210 !important;
}

.flush-step-active {
  background: #f0fff7 !important;
  color: #22543d !important;
  font-weight: 600;
  border: 1px solid #9ae6b4;
}

.flush-step-active::before {
  background: #9ae6b4 !important;
  color: #22543d !important;
}

/* -------------------------------------------------------------
   АДАПТИВ для новых блоков страницы антифриза
   ------------------------------------------------------------- */
@media (min-width: 640px) {
  .why-replace-grid { grid-template-columns: repeat(2, 1fr); }
  .flush-scenarios  { flex-direction: row; }
}

@media (min-width: 960px) {
  .flush-inner { grid-template-columns: 1fr 420px; }
}