/* ============================================================
   OB-GAZ — css/style.css
   Нативный CSS: custom properties, Flexbox, Grid, clamp().
   ============================================================ */

/* ---------- Токены ---------- */
:root {
  --color-bg: #FFFFFF;
  --color-surface: #F6F7F8;
  --color-text: #202124;
  --color-muted: #686D73;
  --color-border: #E7E9EC;
  --color-accent: #245C48;
  --color-accent-strong: #1D4A3A;
  --color-accent-soft: #EAF1EE;
  --color-danger: #B3261E;
  --color-danger-soft: #FBEDEC;
  --color-warning: #8A5A00;
  --color-warning-soft: #FBF3E2;
  --color-dark: #202124;
  --color-on-dark: #FFFFFF;
  --color-on-dark-muted: rgba(255, 255, 255, 0.72);

  --font-sans: "Manrope", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;

  --container: 1200px;
  --gutter: 20px;

  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --border: 1px solid var(--color-border);

  --shadow-sm: 0 1px 2px rgba(32, 33, 36, 0.05);
  --shadow-md: 0 10px 30px rgba(32, 33, 36, 0.08);

  --header-h: 68px;

  --ease: cubic-bezier(0.2, 0.6, 0.2, 1);
  --t-fast: 0.18s;
  --t-med: 0.45s;
}

/* ---------- База ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

html,
body {
  max-width: 100%;
  overflow-x: clip;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.no-scroll {
  overflow: hidden;
}

h1, h2, h3, h4, p, ul, ol, figure {
  margin: 0;
}

ul, ol {
  padding: 0;
  list-style: none;
}

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

a {
  color: inherit;
}

button {
  font: inherit;
}

sub {
  font-size: 0.62em;
  line-height: 0;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection {
  background: var(--color-accent);
  color: #fff;
}

/* ---------- Утилиты ---------- */
.container {
  width: min(100% - 2 * var(--gutter), var(--container));
  margin-inline: auto;
}

.section {
  padding-block: clamp(56px, 9vw, 104px);
}

.section-surface {
  background: var(--color-surface);
  border-block: var(--border);
}

.section-head {
  max-width: 720px;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.section-head-start {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.section-title {
  font-size: clamp(26px, 3.6vw, 40px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.section-lead {
  margin-top: 14px;
  color: var(--color-muted);
  font-size: clamp(15px, 1.6vw, 17px);
}

.block-txt p {
  margin-top: 14px;
  color: var(--color-muted);
  font-size: clamp(15px, 1.6vw, 17px);
}

.block-txt a {
  color: var(--color-text);
  font-weight: 700;
  text-decoration: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
  flex: none;
}

.fineprint {
  margin-top: 22px;
  font-size: 13px;
  color: var(--color-muted);
}

.icon {
  flex: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--color-text);
  color: #fff;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  transition: top var(--t-fast) var(--ease);
}

.skip-link:focus-visible {
  top: 12px;
}

/* ---------- Кнопки ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.25;
  text-decoration: none;
  cursor: pointer;
  min-height: 44px;
  transition: background-color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease);
}

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

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

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

.btn-secondary {
  background: var(--color-bg);
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  background: var(--color-surface);
  border-color: #d7dbe0;
}

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

.btn-accent:hover {
  background: #2d735a;
}

.btn-light {
  background: #fff;
  color: var(--color-text);
}

.btn-light:hover {
  background: #e9ebee;
}

.btn-lg {
  padding: 14px 26px;
  font-size: 16px;
  border-radius: 14px;
}

.btn-sm {
  padding: 8px 14px;
  min-height: 40px;
  font-size: 14px;
}

.btn-block {
  width: 100%;
}

.btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* ---------- Иконочная ссылка ---------- */
.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: var(--border);
  border-radius: 10px;
  color: var(--color-text);
  background: var(--color-bg);
  transition: background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.icon-link:hover {
  background: var(--color-surface);
}

/* ---------- Шапка ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: var(--header-h);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.04em;
  color: var(--color-text);
  flex: none;
}

.logo-mark {
  flex: none;
}

.logo-text b,
.logo-text strong {
  color: var(--color-accent);
}

/* Бургер */
.burger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: var(--border);
  border-radius: 10px;
  background: var(--color-bg);
  cursor: pointer;
}

.burger-box {
  position: relative;
  width: 20px;
  height: 14px;
  display: block;
}

.burger-line {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform var(--t-fast) var(--ease), opacity var(--t-fast) var(--ease), top var(--t-fast) var(--ease);
}

.burger-line:nth-child(1) { top: 0; }
.burger-line:nth-child(2) { top: 6px; }
.burger-line:nth-child(3) { top: 12px; }

.burger[aria-expanded="true"] .burger-line:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}

.burger[aria-expanded="true"] .burger-line:nth-child(2) {
  opacity: 0;
}

.burger[aria-expanded="true"] .burger-line:nth-child(3) {
  top: 6px;
  transform: rotate(-45deg);
}

/* Панель шапки: на мобильных — полноэкранное меню */
.header-panel {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 49;
  display: none;
  flex-direction: column;
  gap: 8px;
  padding: 24px var(--gutter) 32px;
  background: var(--color-bg);
  overflow-y: auto;
}

.header-panel.is-open {
  display: flex;
}

.site-nav {
  flex: 1;
}

.nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-link {
  display: block;
  padding: 13px 4px;
  font-size: 18px;
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  transition: color var(--t-fast) var(--ease);
}

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

.header-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  padding-top: 16px;
}

.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
  color: var(--color-text);
  white-space: nowrap;
}

.header-phone:hover {
  color: var(--color-accent);
}

/* ---------- Первый экран ---------- */
.hero {
  padding-block: clamp(40px, 7vw, 88px) clamp(48px, 8vw, 96px);
}

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

.hero-title {
  font-size: clamp(34px, 7.2vw, 64px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.03em;
}

.hero-lead {
  margin-top: 20px;
  max-width: 56ch;
  font-size: clamp(15px, 1.8vw, 18px);
  color: var(--color-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.hero-points {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 34px;
  padding-top: 26px;
  border-top: var(--border);
}

.hero-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
}

.hero-points .icon {
  color: var(--color-accent);
}

.hero-figure {
  background: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.hero-figure img {
  width: 100%;
  height: auto;
}

/* ---------- Карточки ---------- */
.card {
  background: var(--color-bg);
  border: var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-accent-soft);
  color: var(--color-accent);
  margin-bottom: 6px;
}

.card-title {
  font-size: 17.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card-text {
  color: var(--color-muted);
  font-size: 15px;
}

/* ---------- Каталог ---------- */
.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.product-card {
  padding: 0;
  overflow: hidden;
}

.product-media {
  background: var(--color-surface);
  border-bottom: var(--border);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
}

.product-media img {
  max-height: 100%;
  object-fit: contain;
}

.product-body {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  flex: 1;
}

.product-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.product-name {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.3;
}

.product-specs {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.product-specs li {
  display: flex;
  gap: 6px;
  font-size: 14px;
}

.spec-label {
  color: var(--color-muted);
  flex: none;
}

.spec-value {
  font-weight: 600;
}

.product-desc {
  font-size: 14px;
  color: var(--color-muted);
}

.product-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 6px;
}

.product-price {
  font-size: 17px;
  font-weight: 800;
}

.product-actions {
  margin-top: 10px;
}

/* Бейджи */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
  flex: none;
}

.badge-muted {
  background: var(--color-surface);
  border: var(--border);
  color: var(--color-muted);
}

.badge-demo {
  background: var(--color-warning-soft);
  color: var(--color-warning);
}

.catalog-empty {
  grid-column: 1 / -1;
  padding: 40px 24px;
  border: 1px dashed #d3d7dc;
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  text-align: center;
  color: var(--color-muted);
}

.catalog-demo-note {
  grid-column: 1 / -1;
  margin-bottom: 4px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: var(--color-warning-soft);
  color: var(--color-warning);
  font-size: 14px;
  font-weight: 600;
}

.section-cta {
  margin-top: clamp(28px, 4vw, 44px);
}

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

.usage-copy p {
  max-width: 62ch;
  color: var(--color-muted);
}

.usage-copy p + p {
  margin-top: 12px;
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 22px;
}

.check-list li {
  position: relative;
  padding-left: 30px;
  font-weight: 600;
  font-size: 15px;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--color-accent-soft);
}

.check-list li::after {
  content: "";
  position: absolute;
  left: 5.5px;
  top: 8.5px;
  width: 9px;
  height: 5px;
  border-left: 2px solid var(--color-accent);
  border-bottom: 2px solid var(--color-accent);
  transform: rotate(-45deg);
}

.note {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--color-surface);
  border: var(--border);
  font-size: 14px;
  color: var(--color-muted);
}

.usage-visual {
  border: var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-surface);
}

.usage-visual img {
  width: 100%;
  height: auto;
}

/* ---------- Качество ---------- */
.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 860px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--color-bg);
  border: var(--border);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
}

.chip .icon {
  color: var(--color-accent);
}

.note-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 28px;
  padding: 22px 24px;
  background: var(--color-accent-soft);
  border: 1px solid #d5e3dd;
  border-radius: var(--radius-lg);
}

.note-card p {
  font-weight: 600;
  max-width: 56ch;
}

/* ---------- Шаги ---------- */
.steps-grid {
  counter-reset: step;
}

.step-card {
  gap: 8px;
}

.step-num {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

/* ---------- Доставка ---------- */
.delivery-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: clamp(22px, 4vw, 36px);
  background: var(--color-bg);
  border: var(--border);
  border-radius: var(--radius-xl);
}

.delivery-lead {
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  max-width: 46ch;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 20px;
}

.contact-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--color-muted);
}

.contact-row .icon {
  color: var(--color-accent);
  margin-top: 3px;
}

.contact-row a {
  color: var(--color-text);
  font-weight: 700;
  text-decoration: none;
}

.contact-row a:hover {
  color: var(--color-accent);
}

.contact-list-lg .contact-row {
  font-size: 17px;
}

.contact-list-lg a {
  font-size: 20px;
}

.delivery-actions {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  gap: 12px;
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 820px;
  border-top: var(--border);
}

.faq-item {
  border-bottom: var(--border);
}

.faq-item summary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 36px 18px 0;
  font-weight: 700;
  font-size: 16.5px;
  cursor: pointer;
  list-style: none;
  transition: color var(--t-fast) var(--ease);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "";
  position: absolute;
  right: 6px;
  top: 50%;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--color-muted);
  border-bottom: 2px solid var(--color-muted);
  transform: translateY(-70%) rotate(45deg);
  transition: transform var(--t-fast) var(--ease);
}

.faq-item[open] summary::after {
  transform: translateY(-30%) rotate(225deg);
}

.faq-item summary:hover {
  color: var(--color-accent);
}

.faq-body {
  padding: 0 40px 20px 0;
}

.faq-body p {
  color: var(--color-muted);
  max-width: 68ch;
}

.faq-body a {
  color: var(--color-text);
  font-weight: 600;
}

/* ---------- Форма ---------- */
.request-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: start;
}

.request-copy p {
  max-width: 52ch;
  color: var(--color-muted);
}

.request-form {
  gap: 16px;
  padding: clamp(20px, 3.5vw, 32px);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.field label {
  font-size: 14px;
  font-weight: 700;
}

.field .optional {
  color: var(--color-muted);
  font-weight: 500;
}

.req {
  color: var(--color-danger);
}

.field input[type="text"],
.field textarea {
  width: 100%;
  padding: 12px 14px;
  border: var(--border);
  border-radius: 12px;
  background: var(--color-bg);
  color: var(--color-text);
  font: inherit;
  font-size: 15px;
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.field textarea {
  resize: vertical;
  min-height: 84px;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #9aa0a6;
}

.field input:focus-visible,
.field textarea:focus-visible {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(36, 92, 72, 0.14);
}

.field input[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-color: var(--color-danger);
}

.field input[aria-invalid="true"]:focus-visible {
  box-shadow: 0 0 0 3px rgba(179, 38, 30, 0.12);
}

.field-hint {
  font-size: 13px;
  color: var(--color-muted);
}

.field-error {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-danger);
}

.field-check .check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--color-muted);
  cursor: pointer;
}

.field-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--color-accent);
  flex: none;
}

.field-check a {
  color: var(--color-text);
  font-weight: 600;
}

.form-hint {
  font-size: 12.5px;
  color: var(--color-muted);
}

.form-status {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form-status:empty {
  display: none;
}

.status-title {
  font-weight: 800;
  font-size: 15.5px;
}

.status-title.is-ok { color: var(--color-accent); }
.status-title.is-error { color: var(--color-danger); }

.status-text {
  font-size: 14px;
  color: var(--color-muted);
}

.form-message {
  margin: 0;
  padding: 14px 16px;
  background: var(--color-surface);
  border: var(--border);
  border-radius: var(--radius-md);
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 13px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 220px;
  overflow: auto;
}

/* ---------- Финальный CTA ---------- */
.section-cta-section {
  padding-block: clamp(32px, 5vw, 64px) clamp(56px, 9vw, 104px);
}

.cta-panel {
  background: var(--color-dark);
  color: var(--color-on-dark);
  border-radius: var(--radius-xl);
  padding: clamp(36px, 6vw, 72px);
  text-align: left;
}

.cta-title {
  font-size: clamp(28px, 4.4vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.12;
  max-width: 18ch;
}

.cta-text {
  margin-top: 16px;
  max-width: 52ch;
  color: var(--color-on-dark-muted);
  font-size: clamp(15px, 1.8vw, 17px);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.cta-phone-hint {
  margin-top: 26px;
  font-size: 14px;
  color: var(--color-on-dark-muted);
}

/* ---------- Подвал ---------- */
.site-footer {
  border-top: var(--border);
  background: var(--color-surface);
  padding-block: clamp(40px, 6vw, 64px) 28px;
}

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

.footer-brand .logo {
  font-size: 18px;
}

.footer-desc {
  margin-top: 14px;
  max-width: 40ch;
  font-size: 14px;
  color: var(--color-muted);
}

.footer-title {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 14px;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  text-decoration: none;
  font-weight: 600;
  font-size: 14.5px;
}

.footer-col a:hover {
  color: var(--color-accent);
}

.footer-col li,
.footer-col span {
  font-size: 14.5px;
  color: var(--color-muted);
}

.footer-col li a[href^="tel"],
.footer-col li a[data-contact="phone"] {
  color: var(--color-text);
  font-weight: 700;
  font-size: 16px;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  margin-top: clamp(32px, 5vw, 48px);
  padding-top: 22px;
  border-top: var(--border);
  font-size: 13px;
  color: var(--color-muted);
}

/* ---------- Тост ---------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 90;
  transform: translate(-50%, 12px);
  max-width: min(92vw, 460px);
  padding: 13px 18px;
  background: var(--color-dark);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.45;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ---------- Появление при прокрутке ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Страница политики ---------- */
.prose {
  max-width: 780px;
  padding-block: clamp(40px, 6vw, 72px);
}

.prose h1 {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 22px;
}

.prose h2 {
  font-size: 19px;
  font-weight: 700;
  margin: 28px 0 10px;
}

.prose p,
.prose li {
  color: var(--color-muted);
  margin-bottom: 10px;
}

.prose ul {
  list-style: disc;
  padding-left: 22px;
}

.prose a {
  color: var(--color-text);
  font-weight: 600;
}

.prose .back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
  font-weight: 700;
  text-decoration: none;
  color: var(--color-text);
}

.prose .back-link:hover {
  color: var(--color-accent);
}

.page-header {
  border-bottom: var(--border);
  background: rgba(255, 255, 255, 0.94);
}

.page-header .header-inner {
  height: 64px;
}

/* ---------- Адаптив ---------- */
@media (min-width: 560px) {
  .card-grid,
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

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

@media (min-width: 760px) {
  :root {
    --gutter: 28px;
  }

  .delivery-card {
    grid-template-columns: 1.4fr 1fr;
    align-items: center;
  }

  .delivery-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1024px) {
  :root {
    --header-h: 76px;
    --gutter: 32px;
  }

  .burger {
    display: none;
  }

  .header-panel {
    position: static;
    display: flex;
    flex-direction: row;
    align-items: center;
    flex: 1;
    gap: 24px;
    padding: 0;
    background: transparent;
    overflow: visible;
  }

  .site-nav {
    flex: 1;
  }

  .nav-list {
    flex-direction: row;
    justify-content: center;
    gap: 4px;
  }

  .nav-link {
    padding: 9px 13px;
    font-size: 14.5px;
    font-weight: 600;
    border-bottom: 0;
    border-radius: 10px;
    color: var(--color-muted);
    transition: color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
  }

  .nav-link:hover {
    color: var(--color-text);
    background: var(--color-surface);
  }

  .header-actions {
    flex-direction: row;
    align-items: center;
    padding-top: 0;
    margin-left: auto;
    gap: 14px;
  }

  .header-phone {
    font-size: 15.5px;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .usage-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .request-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: clamp(40px, 5vw, 72px);
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1.2fr 1fr;
    gap: 40px;
  }
}

/* ---------- Многостраничность: активный пункт и хлебные крошки ---------- */
.nav-link.is-active {
  color: var(--color-accent);
}

@media (min-width: 1024px) {
  .nav-link.is-active {
    color: var(--color-accent);
    background: var(--color-accent-soft);
  }
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 14px;
  color: var(--color-muted);
}

.breadcrumbs a {
  color: var(--color-muted);
  text-decoration: none;
  font-weight: 600;
}

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

.breadcrumbs .sep {
  color: #b6bcc2;
}

.page-hero {
  padding-top: clamp(36px, 5vw, 56px);
}

/* ---------- Блог: сетка карточек ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.blog-card {
  gap: 12px;
}

.blog-card-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  font-size: 13px;
  color: var(--color-muted);
}

.blog-card-top .badge {
  color: var(--color-accent);
  background: var(--color-accent-soft);
}

.blog-card-title {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.blog-card-title a {
  text-decoration: none;
}

.blog-card-title a:hover {
  color: var(--color-accent);
}

.blog-card-excerpt {
  font-size: 15px;
  color: var(--color-muted);
}

.blog-card-link {
  margin-top: auto;
  font-weight: 700;
  font-size: 14.5px;
  text-decoration: none;
  color: var(--color-accent);
}

.blog-card-link:hover {
  color: var(--color-accent-strong);
}

@media (min-width: 560px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
}

@media (min-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---------- Статья блога ---------- */
.prose .eyebrow {
  color: var(--color-accent);
  margin-bottom: 16px;
}

.prose .article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: var(--border);
  font-size: 14px;
  color: var(--color-muted);
}

.prose .article-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.prose .article-meta .icon {
  color: var(--color-accent);
}

.prose h3 {
  font-size: 17.5px;
  font-weight: 700;
  margin: 26px 0 8px;
}

.prose strong {
  color: var(--color-text);
}

.prose blockquote {
  margin: 20px 0;
  padding: 16px 20px;
  border-left: 3px solid var(--color-accent);
  background: var(--color-surface);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-muted);
}

.prose .lead {
  font-size: 18px;
  line-height: 1.55;
  color: var(--color-text);
  margin-top: 20px;
}

.article-cta {
  margin-top: 44px;
  padding: clamp(24px, 4vw, 34px);
  background: var(--color-accent-soft);
  border: 1px solid #d5e3dd;
  border-radius: var(--radius-lg);
}

.article-cta h2 {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.article-cta p {
  color: var(--color-muted);
  margin-bottom: 18px;
  max-width: 56ch;
}

.article-cta .article-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Уменьшенная анимация ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}