/* =========================
   DESIGN TOKENS
========================= */
:root {
  /* Typography */
  --font-sans:
    "Inter", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;

  /* Font sizes */
  --text-xs: 12px;
  --text-sm: 14px;
  --text-md: 16px;
  --text-lg: 18px;
  --text-2lg: 24px;
  --text-xl: 28px;
  --text-2xl: 34px;
  --text-3xl: 48px;
  --text-4xl: 56px;

  /* Line heights */
  --lh-text: 1.6;
  --lh-title: 1.15;

  /* Layout */
  --container: 1240px;

  /* Spacing (4px grid) */
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;
  --space-40: 40px;
  --space-48: 48px;
  --space-56: 56px;
  --space-64: 64px;

  /* Radius & Shadow */
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;

  --shadow-sm: 0 8px 24px rgba(11, 30, 44, 0.08);
  --shadow-md: 0 18px 44px rgba(11, 30, 44, 0.12);

  /* Colors */
  --color-bg: #ffffff;
  --color-surface: #ffffff;
  --color-surface-muted: #f4f7fa;
  --color-surface-subtle: rgba(11, 30, 44, 0.03);

  --color-divider: rgba(11, 30, 44, 0.06);

  --color-text: #0b1e2c;
  --color-text-secondary: rgba(11, 30, 44, 0.78);
  --color-muted: #587082;
  --color-text-tertiary: rgba(11, 30, 44, 0.55);

  --color-text-strong: rgba(11, 30, 44, 0.86);
  --color-text-soft: rgba(11, 30, 44, 0.75);
  --color-text-faint: rgba(11, 30, 44, 0.6);

  --color-border-accent-strong: rgba(129, 183, 206, 0.28);

  --color-border: rgba(11, 30, 44, 0.12);
  --color-glass: rgba(255, 255, 255, 0.75);
  --color-glass-strong: rgba(255, 255, 255, 0.84);

  --color-scrim: rgba(11, 30, 44, 0.62);
  --color-scrim-hover: rgba(11, 30, 44, 0.68);
  --blur-sm: 8px;

  --color-accent-glow-strong: rgba(31, 135, 181, 0.14);
  --color-accent-glow: rgba(31, 135, 181, 0.1);

  --color-accent-highlight: #2aa7d2;
  --color-accent-shadow: rgba(31, 135, 181, 0.22);

  /* Accent */
  --color-accent: #1f87b5;
  --color-on-accent: #ffffff;
  --color-accent-strong: #176f96;
  --color-accent-soft: rgba(31, 135, 181, 0.12);
  --color-border-accent: rgba(31, 135, 181, 0.22);
  --color-border-focus: rgba(31, 135, 181, 0.45);

  --color-ink: rgba(11, 30, 44, 0.95);
  --color-ink-hover: rgba(11, 30, 44, 0.9);
  --color-ink-border: rgba(11, 30, 44, 0.85);

  /* Modal */
  --color-overlay: rgba(11, 30, 44, 0.55);

  /* Links */
  --color-link: var(--color-accent);
  --color-link-hover: var(--color-accent-strong);

  /* Placeholder */
  --color-placeholder: rgba(11, 30, 44, 0.45);

  /* Controls */
  --control-height: 44px;
  --control-radius-pill: 999px;

  /* Button paddings */
  --button-padding-x: var(--space-20);
  --icon-size-md: 22px;

  /* Motion */
  --motion-slow: 520ms;
  --motion-medium: 420ms;
  --motion-fast: 150ms;
  --motion-snap: 120ms;
  --ease-standard: ease;

  /* Dropdown */
  --dropdown-offset: var(--space-8);
  --dropdown-padding: var(--space-12);
  --chev-size: 8px;

  /* Header */
  --header-height: 80px;

  /* Logo */
  --logo-size: 32px;

  /* Tables (tokenized) */
  --spec-table-min: 720px;
}

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

html {
  height: 100%;
}

body {
  min-height: 100%;
  margin: 0;

  /* Keep the page from “accidentally” scrolling horizontally,
     but don’t hide layout bugs on html. */
  overflow-x: clip;

  font-family: var(--font-sans);
  font-size: var(--text-md);
  line-height: var(--lh-text);
  color: var(--color-text);
  background: var(--color-bg);
}

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

button {
  font: inherit;
  color: inherit;
}

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

/* =========================
   LAYOUT
========================= */
.page__main {
  min-height: 50vh;
}

.container {
  width: 100%;
  max-width: var(--container);
  padding-left: var(--space-24);
  padding-right: var(--space-24);
  margin-left: auto;
  margin-right: auto;
}

/* =========================
   BUTTON (BEM)
========================= */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  height: var(--control-height);
  padding-inline: var(--button-padding-x);

  border-radius: var(--radius-md);
  border: 1px solid transparent;

  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: inherit;

  user-select: none;
  cursor: pointer;

  transition:
    transform var(--motion-fast) var(--ease-standard),
    background-color var(--motion-fast) var(--ease-standard),
    color var(--motion-fast) var(--ease-standard),
    border-color var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard);
}

.button:disabled,
.button[aria-disabled="true"] {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.button--pill {
  border-radius: var(--control-radius-pill);
}

.button--primary {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

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

.button--lg {
  height: 48px;
  padding-inline: var(--space-16);
}

.button--sm {
  height: 40px;
  padding-inline: var(--space-16);
}

.button--square-sm {
  width: 40px;
  height: 40px;
  padding: 0;
}

.button--ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.button--ghost:hover {
  border-color: var(--color-border-accent-strong);
  color: var(--color-ink);
}

.button--surface {
  background: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}

.button--surface:hover {
  border-color: var(--color-border-accent-strong);
  transform: translateY(-1px);
}

.button--surface:active {
  transform: translateY(0);
}

.button--ink {
  background: var(--color-ink);
  border-color: var(--color-ink-border);
  color: var(--color-on-accent);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.button--ink-outline {
  background: transparent;
  border-color: var(--color-ink-border);
  color: var(--color-text);
}

.button--ink-outline:hover {
  background: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-on-accent);
  transform: translateY(-1px);
}

.button--ink-outline:active {
  transform: translateY(0);
}

.button--text {
  background: transparent;
  border-color: transparent;
  color: var(--color-text-soft);
  font-weight: 700;
}

.button--text:hover {
  color: var(--color-link-hover);
}

.button--text:focus-visible {
  outline: none;
  box-shadow: none;
  color: var(--color-accent-strong);
}

/* =========================
   ICON BUTTON
========================= */
.button--icon {
  padding: 0;
  display: grid;
  place-items: center;
  line-height: 1;
}

.button--icon-md {
  width: var(--control-height);
  height: var(--control-height);
}

.button--icon-surface:hover {
  background: var(--color-surface-muted);
  border-color: var(--color-border);
}

.button__icon {
  width: var(--icon-size-md);
  height: var(--icon-size-md);
  fill: currentColor;
}

.button--icon-xs {
  width: 20px;
  height: 20px;
  padding: 0;
  min-width: 0;
  border-radius: 4px;
  display: grid;
  place-items: center;
  line-height: 1;
}

.button--chip-remove {
  background: transparent;
  border-color: transparent;
  color: var(--color-text-tertiary);
}

.button--chip-remove:hover {
  background: var(--color-surface-subtle);
  color: var(--color-text);
  transform: translateY(-1px);
}

.button--chip-remove:active {
  transform: translateY(0);
}

/* =========================
   SITE HEADER
========================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--color-glass-strong);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

@supports not (
  (-webkit-backdrop-filter: blur(10px)) or (backdrop-filter: blur(10px))
) {
  .site-header {
    background: var(--color-surface);
  }
}

/* Prevent flex overflow */
.site-header__inner,
.site-header__logo,
.site-header__nav,
.site-header__tools {
  min-width: 0;
}

.site-header__inner {
  height: var(--header-height);
  display: flex;
  align-items: center;
  gap: var(--space-24);
}

.site-header__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);

  transition: color var(--motion-fast) var(--ease-standard);
}

.site-header__logo:hover,
.site-header__logo:focus-visible {
  color: var(--color-accent-strong);
  background: transparent;
  box-shadow: none;
  text-decoration: none;
}

.site-header__logo-mark {
  background: none;
  box-shadow: none;
  display: grid;
  place-items: center;

  width: var(--space-24);
  height: var(--space-24);
}

.site-header__logo-img {
  height: var(--logo-size);
  width: auto;
  display: block;
  flex-shrink: 0; /* чтобы не сжимался во flex */
}

.site-header__logo-text {
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.site-header__nav {
  flex: 1 1 auto;
}

.site-header__tools {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
  white-space: nowrap;
}

/* =========================
   SITE NAV
========================= */
.site-nav__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: var(--space-16);
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  height: var(--control-height);
  padding-inline: var(--space-12);

  border-radius: 0;
  box-shadow: none;

  font-weight: 500;
  color: var(--color-text);
  transition: color var(--motion-fast) var(--ease-standard);
}

.site-nav__link:hover {
  color: var(--color-accent-strong);
}

.site-nav__link:focus-visible {
  outline: none;
  box-shadow: none;
  color: var(--color-accent-strong);
}

.site-nav__item--has-dropdown .site-nav__link {
  cursor: pointer;
}

.site-nav__link[aria-current="page"] {
  outline: none;
  box-shadow: none;
  color: var(--color-accent-strong);
}

/* =========================
   DROPDOWN
========================= */
.dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.dropdown__toggle {
  background: transparent;
  border: none;
  padding-inline: var(--space-12);
  height: var(--control-height);
  border-radius: 0;
  cursor: pointer;
  transition: color var(--motion-fast) var(--ease-standard);
}

.dropdown__toggle:hover,
.dropdown__toggle:focus-visible {
  outline: none;
  box-shadow: none;
  color: var(--color-accent-strong);
}

.dropdown__chev {
  width: var(--chev-size);
  height: var(--chev-size);
  display: inline-block;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg);
  margin-left: var(--space-4);
  opacity: 0.75;
  transition: transform var(--motion-fast) var(--ease-standard);
}

.dropdown__panel {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 320px;
  max-width: min(420px, calc(100vw - (var(--space-24) * 2)));
  box-sizing: border-box;

  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);

  padding: var(--dropdown-padding);
  margin-top: 0;

  transform: translateY(var(--dropdown-offset));
  opacity: 0;
  pointer-events: none;

  transition:
    opacity var(--motion-snap) var(--ease-standard),
    transform var(--motion-snap) var(--ease-standard);
}

.dropdown__panel::before {
  content: "";
  position: absolute;
  top: calc(-1 * var(--dropdown-offset));
  left: 0;
  right: 0;
  height: var(--dropdown-offset);
}

.dropdown__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.dropdown__link {
  display: block;
  padding: var(--space-12);
  border-radius: var(--radius-md);
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  transition:
    background-color var(--motion-fast) var(--ease-standard),
    color var(--motion-fast) var(--ease-standard);
}

.dropdown__link:hover {
  background: var(--color-accent-soft);
  color: var(--color-accent-strong);
}

.dropdown__link:focus-visible {
  outline: none;
  background: var(--color-accent-soft);
  color: var(--color-accent-strong);
  box-shadow: 0 0 0 2px var(--color-accent-soft);
}

.dropdown__link--active {
  background: var(--color-surface-muted);
  box-shadow: inset 0 0 0 1px var(--color-border);
}

.dropdown__link--disabled {
  pointer-events: none;
  opacity: 0.6;
  cursor: default;
  text-decoration: none;
}

.dropdown--open .dropdown__panel {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.dropdown--open .dropdown__chev {
  transform: rotate(225deg);
}

.dropdown--lang .dropdown__panel {
  left: auto;
  right: 0;
  min-width: 120px;
}

/* Language toggle */
.lang-toggle {
  height: var(--control-height);
  padding-inline: var(--space-12);
  border-radius: 0;
  background: transparent;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  cursor: pointer;
  transition: color var(--motion-fast) var(--ease-standard);
}

.lang-toggle:hover,
.lang-toggle:focus-visible {
  outline: none;
  box-shadow: none;
  color: var(--color-accent-strong);
}

.lang-toggle__label {
  font-weight: 600;
}

/* =========================
   HERO (placeholder)
========================= */
.hero {
  padding: var(--space-56) 0 var(--space-32);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-32);
  align-items: center;
}

.hero__content,
.hero__media,
.hero__actions {
  min-width: 0;
}

.hero__content {
  grid-column: 1;
}

.hero__title {
  margin: 0 0 var(--space-16);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  line-height: var(--lh-title);
  letter-spacing: -0.03em;
}

.hero__text {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-lg);
  max-width: 62ch;
}

.hero__actions {
  /* Works both when .hero__actions is inside .hero__content or a direct child of .hero__inner */
  grid-column: 1;
  margin-top: var(--space-24);
  display: inline-flex;
  align-items: center;
  gap: var(--space-16);
  flex-wrap: wrap;
}

.hero__link {
  font-weight: 600;
  color: var(--color-accent-strong);
  transition: color var(--motion-fast) var(--ease-standard);
}

.hero__link:hover,
.hero__link:focus-visible {
  color: var(--color-accent);
  outline: none;
}

.hero__note {
  margin: var(--space-20) 0 0;
  color: var(--color-text-tertiary);
  font-size: var(--text-xs);
}

.hero__media {
  grid-column: 2;
}

/* =========================
   CATALOG PREVIEW
========================= */
.catalog-preview {
  padding: var(--space-56) 0 var(--space-64);
}

.catalog-preview__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-24);
  margin-bottom: var(--space-32);
}

.catalog-preview__title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-2xl);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
}

.catalog-preview__desc {
  margin: 0;
  color: var(--color-muted);
  max-width: 72ch;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-24) var(--space-32);
  list-style: none;
  padding: 0;
  margin: 0;
}

.catalog-card {
  display: grid;
  justify-items: center;
  text-align: center;
  padding: var(--space-24) var(--space-20);
  border-radius: var(--radius-lg);
  transition:
    background-color var(--motion-fast) var(--ease-standard),
    transform var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard);
  color: var(--color-text);
}

.catalog-card:hover {
  background: var(--color-surface-muted);
  transform: translateY(-2px);
}

.catalog-card:focus-visible {
  outline: none;
  background: var(--color-surface-muted);
  transform: translateY(-2px);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.catalog-card__media {
  width: 100%;
  max-width: 230px;
  height: 140px;
  display: grid;
  place-items: center;
  margin-bottom: var(--space-12);
}

.catalog-card__img {
  width: 150px;
  height: 120px;
  object-fit: cover;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
}

.catalog-card__title {
  margin: 0;
  font-size: var(--text-md);
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: -0.01em;
  max-width: 26ch;
}

/* =========================
   ADVANTAGES
========================= */
.advantages {
  padding: var(--space-64) 0;
  background: var(--color-bg);
}

.advantages__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-24);
}

.advantages__title {
  margin: 0;
  font-size: var(--text-2xl);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
}

.advantages__text {
  margin: 0;
  color: var(--color-muted);
  max-width: 78ch;
}

.advantages__list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-16);
}

.advantages__item {
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition:
    transform var(--motion-fast) var(--ease-standard),
    border-color var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard);
}

.advantages__item:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-accent);
  box-shadow: var(--shadow-sm);
}

.advantages__item-title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-md);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.advantages__item-text {
  margin: 0;
  color: var(--color-muted);
}

/* =========================
   APPLICATIONS
========================= */
.applications {
  padding: var(--space-64) 0;
  background: var(--color-bg);
}

.applications__head {
  display: grid;
  gap: var(--space-12);
  margin-bottom: var(--space-24);
}

.applications__title {
  margin: 0;
  font-size: var(--text-2xl);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
}

.applications__text {
  margin: 0;
  color: var(--color-muted);
  max-width: 78ch;
}

.applications__list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-16);
}

.applications__card {
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition:
    transform var(--motion-fast) var(--ease-standard),
    border-color var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard);
}

.applications__card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-accent);
  box-shadow: var(--shadow-sm);
}

.applications__card-title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-md);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.applications__card-text {
  margin: 0 0 var(--space-12);
  color: var(--color-muted);
}

.applications__card-meta {
  margin: 0;
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: var(--text-sm);
  line-height: 1.45;
}

.applications__accent {
  color: var(--color-accent-strong);
  font-weight: 700;
}

.applications__footer {
  margin-top: var(--space-24);
  display: flex;
  align-items: center;
  gap: var(--space-16);
  flex-wrap: wrap;
}

.applications__note {
  margin: 0;
  color: var(--color-muted);
  max-width: 72ch;
}

.applications__card--link {
  position: relative;
  cursor: pointer;
  text-decoration: none;
}

.applications__card--link::after {
  content: "→";
  position: absolute;
  right: var(--space-16);
  bottom: var(--space-16);
  font-size: var(--text-lg);
  line-height: 1;
  color: var(--color-accent-strong);
  opacity: 0;
  transform: translateX(-4px);
  transition:
    opacity var(--motion-fast) var(--ease-standard),
    transform var(--motion-fast) var(--ease-standard);
}

.applications__card--link:hover::after {
  opacity: 1;
  transform: translateX(0);
}

/* =========================
   CONTACT FORM
========================= */
.contact-form {
  padding: var(--space-64) 0;
  background:
    radial-gradient(
      900px 420px at 10% 10%,
      var(--color-accent-glow-strong),
      transparent 60%
    ),
    radial-gradient(
      700px 360px at 90% 40%,
      var(--color-accent-glow),
      transparent 55%
    ),
    var(--color-surface-muted);
}

.contact-form__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-24);
  align-items: start;
}

.contact-form__head {
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-glass);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

@supports not (
  (-webkit-backdrop-filter: blur(10px)) or (backdrop-filter: blur(10px))
) {
  .contact-form__head {
    background: var(--color-surface);
  }
}

.contact-form__title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-2xl);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
}

.contact-form__text {
  margin: 0 0 var(--space-20);
  color: var(--color-muted);
  max-width: 70ch;
}

.contact-form__bullets {
  margin: 0;
  padding: 0 0 0 var(--space-20);
  color: var(--color-text-secondary);
}

.contact-form__bullet {
  margin: 0 0 var(--space-12);
}

.contact-form__bullet:last-child {
  margin-bottom: 0;
}

.contact-form__form {
  padding: var(--space-24);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.contact-form__actions {
  margin-top: var(--space-16);
  display: flex;
  align-items: center;
  gap: var(--space-12);
  flex-wrap: wrap;
}

.contact-form__note {
  margin: var(--space-12) 0 0;
  color: var(--color-text-tertiary);
  font-size: var(--text-xs);
  max-width: 60ch;
}

/* =========================
   FIELD
========================= */
.field {
  display: grid;
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.field--full {
  grid-column: 1 / -1;
}

.field__label {
  font-weight: 600;
  letter-spacing: -0.01em;
}

.field__required {
  color: var(--color-accent-strong);
}

.field__control {
  height: var(--control-height);
  padding-inline: var(--space-12);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  transition:
    border-color var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard);
}

.field__control--textarea {
  height: auto;
  padding: var(--space-12);
  resize: vertical;
  min-height: 120px;
}

.field__control::placeholder {
  color: var(--color-placeholder);
}

.field__control:focus-visible {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.field__control:focus {
  outline: none;
}

.field__hint {
  margin: 0;
  color: var(--color-text-tertiary);
  font-size: var(--text-xs);
}

/* =========================
   FOOTER
========================= */
.site-footer {
  padding: var(--space-56) 0 var(--space-24);
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

/* iPhone safe-area bottom */
@supports (padding: env(safe-area-inset-bottom)) {
  .site-footer {
    padding-bottom: calc(var(--space-24) + env(safe-area-inset-bottom));
  }
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.05fr 1.95fr;
  gap: var(--space-32);
  align-items: start;
  padding-bottom: var(--space-24);
  border-bottom: 1px solid var(--color-border);
}

.site-footer__brand {
  display: grid;
  gap: var(--space-16);
}

.site-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
  width: fit-content;
}

.site-footer__logo-mark {
  width: var(--space-24);
  height: var(--space-24);
  border-radius: var(--radius-sm);
  background: linear-gradient(
    135deg,
    var(--color-accent),
    var(--color-accent-highlight)
  );
  box-shadow: 0 12px 24px var(--color-accent-shadow);
}

.site-footer__logo-text {
  font-weight: 800;
  letter-spacing: -0.02em;
}

.site-footer__about {
  margin: 0;
  color: var(--color-muted);
  max-width: 60ch;
}

.site-footer__cta {
  margin-top: var(--space-4);
}

.site-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-16);
}

.site-footer__col {
  padding: var(--space-8) 0;
}

.site-footer__title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-sm);
  font-weight: 800;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.site-footer__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-8);
}

.site-footer__item {
  margin: 0;
}

.site-footer__link {
  color: var(--color-text-strong);
  transition:
    color var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard);
  line-height: 1.35;
  text-decoration: none;
}

.site-footer__link:hover {
  color: var(--color-accent-strong);
}

.site-footer__link:focus-visible {
  outline: none;
  box-shadow: none;
  color: var(--color-accent-strong);
}

.site-footer__link--disabled {
  pointer-events: none;
  opacity: 0.6;
  cursor: default;
  text-decoration: none;
}

.site-footer__muted {
  color: var(--color-text-tertiary);
}

.site-footer__social {
  margin-top: var(--space-12);
  display: inline-flex;
  gap: var(--space-12);
}

.site-footer__social-link {
  width: 36px;
  height: 36px;
  border-radius: var(--control-radius-pill);
  border: 1px solid var(--color-border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text-soft);
  background: var(--color-surface);
  transition:
    transform var(--motion-fast) var(--ease-standard),
    color var(--motion-fast) var(--ease-standard),
    border-color var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard);
}

.site-footer__social-link:hover {
  color: var(--color-accent-strong);
  border-color: var(--color-border-accent-strong);
  transform: translateY(-1px);
}

.site-footer__social-link:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.site-footer__bottom {
  padding-top: var(--space-20);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-12);
  flex-wrap: wrap;
}

.site-footer__copy {
  margin: 0;
  color: var(--color-text-faint);
  font-size: var(--text-xs);
}

.site-footer__legal {
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
  flex-wrap: wrap;
  font-size: var(--text-xs);
}

.site-footer__dot {
  color: var(--color-text-tertiary);
}

/* =========================
   ABS CATALOG PAGE
========================= */
.breadcrumbs {
  padding: var(--space-16) 0 0;
}

.breadcrumbs__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
}

.breadcrumbs__item::after {
  content: "•";
  margin-left: var(--space-8);
  color: var(--color-text-tertiary);
}

.breadcrumbs__item:last-child::after {
  content: "";
  margin: 0;
}

.breadcrumbs__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition:
    color var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard);
}

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

.breadcrumbs__link:focus-visible {
  outline: none;
  box-shadow: none;
  color: var(--color-accent-strong);
}

.catalog-head {
  padding: var(--space-24) 0 var(--space-32);
}

.catalog-head__title {
  margin: 0 0 var(--space-12);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
  line-height: var(--lh-title);
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.catalog-head__text {
  margin: 0;
  max-width: 90ch;
  color: var(--color-muted);
  font-size: var(--text-lg);
  line-height: var(--lh-text);
}

.catalog {
  padding: var(--space-32) 0 var(--space-48);
}

.catalog__layout {
  display: grid;
  grid-template-columns: minmax(280px, 340px) 1fr;
  gap: var(--space-32);
  align-items: start;
}

.catalog__content {
  min-width: 0;
}

.catalog__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-20);
}

.catalog__meta {
  margin: 0;
  color: var(--color-text-soft);
  font-size: var(--text-sm);
}

/* Filters */
.filters {
  position: sticky;
  top: var(--space-24);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  padding: var(--space-16);
  overflow: clip;
}

.filters__title {
  margin: 0 0 var(--space-16);
  font-size: var(--text-lg);
  line-height: var(--lh-title);
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.filters__form {
  display: grid;
  gap: var(--space-16);
}

.filters__fields {
  display: grid;
  gap: var(--space-16);
}

.filters__actions {
  display: grid;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.filters__field {
  display: grid;
  gap: var(--space-8);
}

.filters__label {
  font-weight: 700;
  letter-spacing: -0.01em;
  color: rgba(11, 30, 44, 0.9);
}

.filters__control {
  width: 100%;
  height: var(--control-height);
  padding: 0 var(--space-40) 0 var(--space-12);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-size: var(--text-sm);
  line-height: 1.2;
  cursor: pointer;

  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;

  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none'%3E%3Cpath d='M7 10l5 5 5-5' stroke='%23587082' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-12) center;
}

.filters__control:hover {
  border-color: var(--color-border-accent-strong);
}

.filters__control:focus,
.filters__control:focus-visible {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

/* Chips */
.filters__chips {
  margin: var(--space-12) 0 var(--space-16);
}

.filters__chips-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.filters__chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-8) var(--space-12);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface-subtle);
  color: var(--color-text);
  font-size: var(--text-sm);
  line-height: 1.2;
  font-weight: 600;
}

.filters__chip-k {
  color: var(--color-text-tertiary);
  font-weight: 600;
}

.filters__chip-v {
  color: var(--color-text);
  font-weight: 700;
}

/* Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-24);
  align-items: stretch;

  list-style: none;
  padding: 0;
  margin: 0;
}

/* Card */
.product-card {
  height: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  padding: var(--space-16);

  display: grid;
  grid-template-rows:
    auto
    minmax(2.7em, auto)
    auto
    1fr
    auto;

  gap: var(--space-12);
  transition:
    transform 160ms ease,
    box-shadow 160ms ease,
    border-color 160ms ease;
}

.product-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-accent);
  box-shadow: var(--shadow-md);
}

.product-card[hidden] {
  display: none !important;
}

.product-card__media {
  display: grid;
  place-items: center;
  padding: var(--space-8);
}

.product-card__img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  border-radius: var(--radius-md);
  background: var(--color-surface-muted);
}

.product-card__title {
  margin: 0;
  font-size: var(--text-md);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);

  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card__meta {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-sm);
  line-height: 1.45;
}

.product-card__attrs {
  list-style: none;
  padding: 0;
  margin: 0;

  display: grid;
  gap: var(--space-8);
  font-size: var(--text-sm);
  line-height: 1.45;
  color: var(--color-text-secondary);
}

.product-card__attr strong {
  color: rgba(11, 30, 44, 0.95);
  font-weight: 700;
}

.product-card__actions {
  display: flex;
  justify-content: flex-end;
}

/* Pager */
.pager {
  margin-top: var(--space-32);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-16);
}

.pager__text {
  margin: 0;
  color: var(--color-text-soft);
  font-size: var(--text-sm);
}

.pager__nav {
  display: inline-flex;
  gap: var(--space-8);
}

/* =========================
   MATERIAL INFO / INDUSTRY / FAQ
========================= */
.material-info {
  padding: var(--space-48) 0;
  background: var(--color-surface-muted);
  border-top: 1px solid var(--color-divider);
}

.material-info__head {
  margin-bottom: var(--space-24);
  max-width: 92ch;
}

.material-info__title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-2lg);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.material-info__intro {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

.material-info__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-24);
  align-items: stretch;
}

.material-feature {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  padding: var(--space-16);
  display: grid;
  gap: var(--space-12);
}

.material-feature--accent {
  background:
    radial-gradient(
      720px 260px at 10% 10%,
      var(--color-accent-glow-strong),
      transparent 62%
    ),
    var(--color-surface);
  border-color: var(--color-border-accent);
}

.material-feature__title {
  margin: 0;
  font-size: var(--text-lg);
  line-height: var(--lh-title);
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--color-text);
}

.material-feature__text {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

.industry {
  padding: var(--space-48) 0;
  background: var(--color-bg);
}

.industry__head {
  margin-bottom: var(--space-24);
  max-width: 92ch;
}

.industry__title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-2lg);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.industry__text {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

.industry__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-24);
  align-items: stretch;
}

.industry-card {
  display: grid;
  gap: var(--space-12);
  padding: var(--space-16);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: var(--color-text);
  transition:
    transform var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard),
    border-color var(--motion-fast) var(--ease-standard);
}

.industry-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-accent);
  box-shadow: var(--shadow-md);
}

.industry-card:focus-visible {
  outline: none;
  transform: translateY(-2px);
  border-color: var(--color-border-focus);
  box-shadow:
    0 0 0 4px var(--color-accent-soft),
    var(--shadow-md);
}

.industry-card__title {
  margin: 0;
  font-size: var(--text-lg);
  line-height: var(--lh-title);
  letter-spacing: -0.01em;
  font-weight: 800;
}

.industry-card__text {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

.industry-card__meta {
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

.faq {
  padding: var(--space-48) 0;
  background: var(--color-surface-muted);
  border-top: 1px solid var(--color-divider);
}

.faq__head {
  margin-bottom: var(--space-24);
  max-width: 92ch;
}

.faq__title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-2lg);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.faq__text {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

.faq__list {
  display: grid;
  gap: var(--space-12);
}

.faq-item {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-item__q {
  padding: var(--space-16);
  cursor: pointer;
  font-weight: 700;
  letter-spacing: -0.01em;
  list-style: none;
  outline: none;

  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-16);
}

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

.faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border-radius: var(--control-radius-pill);
  border: 1px solid var(--color-border);
  color: var(--color-text-soft);
  transition:
    transform var(--motion-fast) var(--ease-standard),
    background-color var(--motion-fast) var(--ease-standard),
    color var(--motion-fast) var(--ease-standard),
    border-color var(--motion-fast) var(--ease-standard);
}

.faq-item[open] .faq-item__q::after {
  content: "–";
  background: var(--color-accent-soft);
  color: var(--color-text);
  border-color: var(--color-border-accent);
}

.faq-item__a {
  padding: 0 var(--space-16) var(--space-16);
  color: var(--color-text-secondary);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

.faq-item__a p {
  margin: 0;
}

/* =========================
   PRODUCT ITEM PAGE
========================= */
.product-hero {
  padding: var(--space-32) 0 var(--space-24);
}

.product-hero__grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: var(--space-32);
  align-items: center;
}

.product-hero__title {
  margin: 0 0 var(--space-12);
  font-size: clamp(var(--text-xl), 3.2vw, var(--text-3xl));
  line-height: var(--lh-title);
  letter-spacing: -0.03em;
}

.product-hero__lead {
  margin: 0 0 var(--space-16);
  max-width: 85ch;
  color: var(--color-muted);
  font-size: var(--text-lg);
  line-height: var(--lh-text);
}

.product-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.product-hero__note {
  margin: 0;
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.product-hero__media {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface-muted);
  box-shadow: var(--shadow-sm);
  padding: var(--space-16);
  display: grid;
  place-items: center;
}

.product-hero__img {
  width: 100%;
  max-width: 320px;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: contain;
  background: var(--color-surface);
}

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

.spec-section {
  padding: var(--space-32) 0;
}

.spec-section__head {
  margin-bottom: var(--space-20);
  max-width: 92ch;
}

.spec-section__title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-2lg);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
}

.spec-section__text {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

/* Key specs grid */
.spec-section__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-24);
  align-items: start;
}

.spec-section__grid > * {
  min-width: 0;
}

.spec-callout {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-accent);
  background:
    radial-gradient(
      760px 260px at 10% 10%,
      var(--color-accent-glow-strong),
      transparent 60%
    ),
    var(--color-surface);
  box-shadow: var(--shadow-sm);
  padding: var(--space-16);
  display: grid;
  gap: var(--space-12);
}

.spec-callout__title {
  margin: 0;
  font-size: var(--text-lg);
  line-height: var(--lh-title);
  letter-spacing: -0.01em;
}

.spec-callout__text {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

.spec-callout__link {
  color: var(--color-link-hover);
  font-weight: 800;
  text-decoration: none;
}

.spec-callout__link:hover {
  text-decoration: underline;
}

/* About */
.product-about {
  padding: var(--space-24) 0 var(--space-16);
}

.product-about__title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-2lg);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
}

.product-about__text {
  margin: 0 0 var(--space-12);
  color: var(--color-text-secondary);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

.product-about__text:last-child {
  margin-bottom: 0;
}

/* Spec blocks */
.spec-block {
  margin-top: var(--space-24);
}

.spec-block__title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-lg);
  line-height: var(--lh-title);
  letter-spacing: -0.01em;
  font-weight: 800;
}

/* Tables — internal scroll only */
.spec-table-wrap {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);

  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  min-width: var(--spec-table-min);
}

.spec-table--compact {
  min-width: 0;
}

.spec-table th,
.spec-table td {
  padding: var(--space-12);
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.spec-table thead th {
  background: var(--color-surface-subtle);
  color: var(--color-text);
  font-size: var(--text-sm);
  letter-spacing: -0.01em;
  text-align: left;
}

.spec-table tbody th[scope="row"] {
  width: 42%;
  color: var(--color-text);
  font-weight: 800;
  text-align: left;
}

.spec-table tbody td {
  color: var(--color-text-secondary);
}

.spec-table tbody tr:last-child td,
.spec-table tbody tr:last-child th {
  border-bottom: none;
}

.spec-note {
  margin-top: var(--space-16);
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
  line-height: 1.5;
}

/* Tags */
.tag-section {
  padding: var(--space-32) 0;
  background: var(--color-surface-muted);
  border-top: 1px solid var(--color-divider);
}

.tag-section__head {
  margin-bottom: var(--space-16);
  max-width: 92ch;
}

.tag-section__title {
  margin: 0 0 var(--space-12);
  font-size: var(--text-2lg);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
}

.tag-section__text {
  margin: 0;
  color: var(--color-muted);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

.tag-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12);
}

.tag-list__item {
  padding: var(--space-8) var(--space-12);
  border-radius: var(--control-radius-pill);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  font-weight: 700;
}

/* CTA */
.cta-section {
  padding: var(--space-48) 0;
  background: var(--color-bg);
}

.cta-section__grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-24);
  align-items: start;
}

.analogs {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  padding: var(--space-16);
  display: grid;
  gap: var(--space-12);
}

.analogs__title {
  margin: 0;
  font-size: var(--text-2lg);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
}

.analogs__text,
.analogs__note {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

.analogs__list {
  margin: 0;
  padding-left: var(--space-20);
  color: var(--color-text-secondary);
}

.analogs__item + .analogs__item {
  margin-top: var(--space-8);
}

.cta-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-accent);
  background:
    radial-gradient(
      760px 260px at 10% 10%,
      var(--color-accent-glow-strong),
      transparent 60%
    ),
    var(--color-surface);
  box-shadow: var(--shadow-sm);
  padding: var(--space-16);
  display: grid;
  gap: var(--space-12);
}

.cta-card__title {
  margin: 0;
  font-size: var(--text-2lg);
  line-height: var(--lh-title);
  letter-spacing: -0.02em;
}

.cta-card__text {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--text-md);
  line-height: var(--lh-text);
}

.cta-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-12);
}

.cta-card__disclaimer {
  margin: 0;
  color: var(--color-text-tertiary);
  font-size: var(--text-sm);
  line-height: 1.5;
}

/* =========================
   MODAL
========================= */
.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;

  overflow: auto;
  -webkit-overflow-scrolling: touch;
  padding: var(--space-32) 0;
}

.modal.is-open {
  display: block;
}

.modal__overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
}

.modal__dialog {
  position: relative;
  width: min(720px, calc(100% - var(--space-32)));
  margin: 0 auto;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
  padding: var(--space-24);
}

.modal__close {
  position: absolute;
  top: var(--space-12);
  right: var(--space-12);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  transition:
    border-color var(--motion-fast) var(--ease-standard),
    background-color var(--motion-fast) var(--ease-standard),
    box-shadow var(--motion-fast) var(--ease-standard),
    transform var(--motion-fast) var(--ease-standard);
}

.modal__close:hover {
  border-color: var(--color-border-accent-strong);
  background: var(--color-surface-muted);
}

.modal__close:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--color-accent-soft);
}

.modal__title {
  margin: 0 0 var(--space-8);
  font-size: var(--text-xl);
  line-height: var(--lh-title);
  letter-spacing: -0.01em;
}

.modal__subtitle {
  margin: 0 0 var(--space-20);
  color: var(--color-text-soft);
  line-height: var(--lh-text);
}

.modal__form {
  display: grid;
  gap: var(--space-12);
}

.modal__hint,
.modal__status {
  margin: 0;
  color: var(--color-text-soft);
  font-size: var(--text-sm);
}

.modal__actions {
  display: flex;
  gap: var(--space-12);
  align-items: center;
  justify-content: flex-end;
  margin-top: var(--space-8);
  flex-wrap: wrap;
}

/* =========================
   HERO MEDIA SLIDER
========================= */
.hero-media {
  position: relative;
}

.hero-media__viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 820 / 560;
  overflow: hidden;
  border-radius: inherit;
}

.hero-media__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.02);
  transition:
    opacity var(--motion-medium) var(--ease-standard),
    transform var(--motion-slow) var(--ease-standard);
  pointer-events: none;
}

.hero-media__slide.is-active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
  z-index: 1;
}

.hero-media__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
  position: relative;
  z-index: 1;
}

.hero-media__overlay {
  position: absolute;
  left: var(--space-16);
  right: var(--space-16);
  bottom: var(--space-16);
  padding: var(--space-16);
  border-radius: var(--radius-md);
  background: var(--color-scrim);
  backdrop-filter: blur(var(--blur-sm));
  color: var(--color-on-accent);
  z-index: 2;
}

.hero-media__title {
  margin-top: var(--space-8);
  font-size: var(--text-lg);
  line-height: 1.2;
  font-weight: 700;
}

.hero-media__text {
  margin-top: var(--space-8);
  font-size: var(--text-sm);
  line-height: 1.5;
  opacity: 0.92;
  max-width: 46ch;
}

.hero-media__arrows {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
}

.hero-media__arrow {
  pointer-events: auto;
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.92);
  width: 48px;
  height: 48px;
  margin: 0 var(--space-8);
  display: grid;
  place-items: center;
  cursor: pointer;

  opacity: 0;
  transform: translateY(2px);
  transition:
    opacity var(--motion-fast) var(--ease-standard),
    transform var(--motion-fast) var(--ease-standard),
    color var(--motion-fast) var(--ease-standard);
}

.hero-media:hover .hero-media__arrow {
  opacity: 1;
  transform: translateY(0);
}

.hero-media__arrow:hover {
  color: var(--color-on-accent);
}

.hero-media__arrow:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-sm);
}

.hero-media__arrow-ic {
  width: 26px;
  height: 26px;
}

.hero-media__viewport:hover .hero-media__overlay {
  background: var(--color-scrim-hover);
}

@media (prefers-reduced-motion: reduce) {
  .hero-media__slide {
    transition: none;
    transform: none;
  }
  .hero-media__arrow {
    transition: none;
  }
}

/* ============================================================
   ADAPTIVE — put overrides NEXT TO the relevant breakpoint
============================================================ */

/* =========================
   ≥1400 (Large desktop)
========================= */
@media (min-width: 1400px) {
  :root {
    --container: 1320px;
  }
}

/* =========================
   ≤1199 (Laptop / small desktop)
========================= */
@media (max-width: 1199px) {
  :root {
    --spec-table-min: 680px;
  }

  .container {
    padding-left: var(--space-20);
    padding-right: var(--space-20);
  }

  .hero__inner {
    gap: var(--space-24);
  }

  .catalog__layout {
    gap: var(--space-24);
  }

  .industry__grid {
    gap: var(--space-16);
  }

  .product-hero__grid {
    gap: var(--space-24);
    grid-template-columns: 1fr;
  }
}

/* =========================
   ≤1100 (Grid adjustments)
========================= */
@media (max-width: 1100px) {
  .catalog-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .advantages__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .applications__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .industry__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cta-section__grid {
    grid-template-columns: 1fr;
  }

  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* =========================
   ≤980 (Tablet)
========================= */
@media (max-width: 980px) {
  :root {
    --header-height: 72px;
    --logo-size: 30px;
  }

  .container {
    padding-left: var(--space-20);
    padding-right: var(--space-20);
  }

  .site-header__nav {
    display: none;
  }

  .site-header__inner {
    gap: var(--space-16);
  }

  .site-footer__top {
    grid-template-columns: 1fr;
  }

  .site-footer__nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-form {
    padding: var(--space-56) 0;
  }

  .contact-form__inner {
    grid-template-columns: 1fr;
  }

  .spec-section {
    padding: var(--space-24) 0;
  }
}

/* =========================
   ≤860 (Tablet portrait / big phones)
========================= */
@media (max-width: 860px) {
  :root {
    --spec-table-min: 620px;
  }

  .container {
    padding-left: var(--space-16);
    padding-right: var(--space-16);
  }

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

  .filters {
    position: static;
  }

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

  .pager {
    justify-content: flex-start;
  }

  .material-info__grid {
    grid-template-columns: 1fr;
  }

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

  .spec-section__grid {
    grid-template-columns: 1fr;
  }

  .catalog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-16);
  }

  .catalog-preview__head {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* =========================
   ≤680 (Phone)
========================= */
@media (max-width: 680px) {
  :root {
    --header-height: 64px;
    --logo-size: 28px;
    --spec-table-min: 560px;
  }

  .container {
    padding-left: var(--space-16);
    padding-right: var(--space-16);
  }

  /* Header mobile UX */
  .site-header__inner {
    gap: var(--space-12);
  }

  .site-header__logo {
    padding: var(--space-8);
    gap: var(--space-8);
  }

  .site-header__logo-img {
    width: 24px;
  }

  .site-header__tools > .button.button--primary {
    display: none;
  }

  .lang-toggle {
    height: 40px;
    padding-inline: var(--space-8);
    gap: var(--space-4);
  }

  .lang-toggle__label {
    font-size: var(--text-sm);
  }

  .dropdown__panel {
    min-width: 240px;
    max-width: calc(100vw - (var(--space-16) * 2));
  }

  /* HERO */
  .hero {
    padding: var(--space-40) 0 var(--space-24);
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: var(--space-16);
    align-items: start;
  }

  .hero__content,
  .hero__media,
  .hero__actions {
    grid-column: 1;
  }

  /* Remove long text blocks on mobile */
  .hero__text {
    display: none;
  }

  .hero__media {
    width: 100%;
    min-height: 0;
  }

  .hero-media {
    width: 100%;
  }

  .hero-media__viewport {
    width: 100%;
    aspect-ratio: 4 / 3;
  }

  .hero-media__overlay {
    left: var(--space-12);
    right: var(--space-12);
    bottom: var(--space-12);
    padding: var(--space-12);
  }

  /* Buttons: mobile friendly */
  .hero__actions {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-12);
    margin-top: var(--space-16);
  }

  .hero__actions .button {
    width: 100%;
  }

  /* Typography */
  .catalog-head__text,
  .product-hero__lead {
    font-size: var(--text-md);
  }

  /* Sections */
  .advantages,
  .applications {
    padding: var(--space-48) 0;
  }

  .material-info,
  .industry,
  .faq {
    padding: var(--space-40) 0;
  }

  .cta-section {
    padding: var(--space-40) 0;
  }

  /* Cards */
  .product-card,
  .material-feature,
  .industry-card,
  .faq-item,
  .analogs,
  .cta-card,
  .contact-form__head,
  .contact-form__form {
    padding: var(--space-16);
  }

  /* Product hero CTA */
  .product-hero__cta {
    flex-direction: column;
    align-items: stretch;
  }

  .product-hero__cta .button,
  .filters__actions .button {
    width: 100%;
  }

  .filters__actions {
    gap: var(--space-12);
  }

  /* Hide "For technologist" callout on phones */
  .spec-callout {
    display: none;
  }

  /* Tables: reduce padding */
  .spec-table th,
  .spec-table td {
    padding: var(--space-8);
  }

  /* "Основные характеристики" stacked layout */
  .spec-table--compact tbody tr {
    display: block;
    padding: var(--space-12) var(--space-12);
    border-bottom: 1px solid var(--color-border);
  }

  .spec-table--compact tbody tr:last-child {
    border-bottom: none;
  }

  .spec-table--compact tbody th[scope="row"],
  .spec-table--compact tbody td {
    display: block;
    width: 100%;
    padding: 0;
    border-bottom: none;
  }

  .spec-table--compact tbody th[scope="row"] {
    margin-bottom: var(--space-4);
  }

  .spec-table--compact tbody td {
    color: var(--color-text-secondary);
  }

  /* If :has() supported — compact table doesn't need horizontal scroll */
  .spec-table-wrap:has(.spec-table--compact) {
    overflow: hidden;
  }
}

/* =========================
   ≤620 (Small tablets / large phones)
========================= */
@media (max-width: 620px) {
  .advantages {
    padding: var(--space-48) 0;
  }

  .advantages__title,
  .applications__title {
    font-size: var(--text-xl);
  }

  .advantages__list,
  .applications__list {
    grid-template-columns: 1fr;
  }
}

/* =========================
   ≤560 (Footer)
========================= */
@media (max-width: 560px) {
  .site-footer__nav {
    grid-template-columns: 1fr;
  }
}

/* =========================
   ≤520 (Catalog preview)
========================= */
@media (max-width: 520px) {
  .catalog-grid {
    grid-template-columns: 1fr;
  }
}

/* =========================
   ≤420 (Small phone)
========================= */
@media (max-width: 420px) {
  :root {
    --logo-size: 26px;
    --spec-table-min: 520px;
  }

  .site-header__logo-text {
    display: none;
  }

  .catalog-head__title {
    font-size: clamp(var(--text-xl), 8vw, var(--text-2xl));
  }

  .product-hero__title {
    font-size: clamp(var(--text-xl), 7.5vw, var(--text-2xl));
  }

  .dropdown__panel {
    min-width: 200px;
  }
}