@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap");

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

html,
body {
  height: 100%;
}

/* Theme — Kavatronic logo palette */
:root {
  --color-bg: #13161d;
  --color-bg-card: #1c2030;
  --color-bg-section: #181b25;
  --color-accent: #4da8d4;
  --color-accent2: #d4622a;
  --color-text: #dde3ec;
  --color-text-muted: #7a8ea8;
  --color-border: #252c3e;
  --color-header-bg: #0e1018;

  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 64px;
  --space-xl: 96px;

  /* aliases for older class names */
  --accent: var(--color-accent);
  --panel: var(--color-bg-card);
  --text: var(--color-text);
  --muted: var(--color-text-muted);
  --border: var(--color-border);
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

code,
.mono {
  font-family: "JetBrains Mono", ui-monospace, monospace;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

h3 {
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}

p {
  max-width: 680px;
}

.site-footer p,
.product-card p,
.article-card p,
.contacts-note,
.contacts-direct,
.kvt-modal__text,
.about-hero__tagline,
.contact-form__hint,
.contact-form__micro {
  max-width: none;
}

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

a:hover,
a:focus-visible {
  text-decoration: underline;
}

/* Logo */
.logo-img {
  height: 48px;
  width: auto;
  display: block;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

/* Главная: крупнее логотип + словесный знак KAVATRONIC */
.logo-link--home {
  gap: 12px;
  max-width: min(100%, 420px);
}

.logo-img--home {
  height: 56px;
  width: auto;
  flex-shrink: 0;
}

.site-brand__name {
  font-size: clamp(14px, 2.4vw, 19px);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: #e8eef7;
  line-height: 1.1;
}

.logo-link:hover,
.logo-link:focus-visible {
  text-decoration: none;
  opacity: 0.92;
}

.logo-static {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

/* Header */
.site-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  min-height: 72px;
  padding: 0 24px;
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border);
}

.site-header__cta {
  white-space: nowrap;
}

.site-header__cta:focus-visible {
  outline: 2px solid rgba(77, 168, 212, 0.7);
  outline-offset: 2px;
}

/* Старое чекбокс-меню отключено — используется #hamburger + #mobile-menu */
.nav-toggle,
.nav-burger {
  display: none !important;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
  margin: 0 -4px 0 auto;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  border-radius: 8px;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.hamburger:hover,
.hamburger:focus-visible {
  background: rgba(41, 182, 246, 0.1);
  color: var(--color-accent);
  outline: none;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: transform 0.3s ease, opacity 0.3s ease;
  border-radius: 1px;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: 8px 16px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-nav a {
  display: inline-block;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s ease, background-color 0.15s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--color-accent);
  background: rgba(41, 182, 246, 0.08);
  text-decoration: none;
}

/* Main */
main {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

main.container {
  padding: var(--space-sm) var(--space-md) var(--space-lg);
}

/* Hero */
#hero.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 85vh;
  margin: calc(-1 * var(--space-sm)) calc(-1 * var(--space-md)) 0;
  padding: var(--space-lg) var(--space-md);
  overflow: hidden;
  background: linear-gradient(135deg, #080e1a 0%, #0d1f3c 50%, #0a1628 100%);
  border-bottom: 1px solid var(--color-border);
  box-shadow: inset 0 -1px 0 rgba(77, 168, 212, 0.1);
}

#hero.hero::before {
  content: "";
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(41, 182, 246, 0.08) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  pointer-events: none;
}

#hero .hero__content {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: min(72ch, 100%);
}

#hero.hero h1 {
  margin: 0 0 8px;
  color: #ffffff;
}

#hero p {
  margin: 0;
  max-width: min(70ch, 100%);
}

.hero__subtitle {
  margin-top: 10px;
  color: var(--color-text-muted);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.hero__bullets {
  margin: 18px 0 0;
  padding-left: 1.2em;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
  max-width: min(70ch, 100%);
}

.hero__bullets li {
  margin-bottom: 8px;
}

.hero__bullets li:last-child {
  margin-bottom: 0;
}

.section-intro {
  margin: 0 0 var(--space-md);
  max-width: 72ch;
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.65;
}

.table-footnote {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.comparison-disclaimer {
  margin: 10px 0 0;
  max-width: 78ch;
  font-size: 13px;
  color: color-mix(in srgb, var(--color-text-muted) 92%, var(--color-text) 8%);
  line-height: 1.55;
}

.product-card__tagline {
  margin: 0 0 10px;
  font-size: 0.9rem;
  line-height: 1.45;
  color: var(--color-text-muted);
}

.section-form-intro {
  margin: 0 0 var(--space-md);
  max-width: 72ch;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.contact-form__hint {
  margin: 0 0 8px;
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.45;
}

.contact-form__micro {
  margin: 12px 0 0;
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.45;
}

.contacts-direct {
  margin: 0 0 6px;
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.servo-section-lead {
  margin: 0 auto 16px;
  max-width: 800px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* Полосатые секции главной (чётные по порядку, без hero) */
main#home > section.section:nth-of-type(even):not(#hero) {
  background: var(--color-bg-section);
  margin-left: calc(-1 * var(--space-md));
  margin-right: calc(-1 * var(--space-md));
  padding-left: var(--space-md);
  padding-right: var(--space-md);
  border-top: 1px solid rgba(30, 58, 110, 0.5);
  border-bottom: 1px solid rgba(30, 58, 110, 0.35);
}

.section {
  margin-top: 0;
  padding: var(--space-xl) 0;
}

.section__header h2 {
  margin: 0 0 14px;
  color: var(--color-text);
  position: relative;
  padding-bottom: 0;
}

h2.section-title::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  margin-top: 12px;
  border-radius: 2px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 120ms ease, background-color 160ms ease, border-color 160ms ease, opacity 160ms ease;
  user-select: none;
  text-decoration: none;
}

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

.btn--sm {
  padding: 10px 12px;
  border-radius: 10px;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border-radius: 4px;
}

.btn--primary:hover,
.btn--primary:focus-visible {
  background: #4296be;
  text-decoration: none;
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--secondary:hover,
.btn--secondary:focus-visible {
  background: rgba(255, 255, 255, 0.09);
  text-decoration: none;
}

/* Hero: голубая + оранжевая */
.hero__actions .btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.hero__actions .btn--secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-text);
  border-color: rgba(255, 255, 255, 0.12);
}

.hero__actions .btn--secondary:hover,
.hero__actions .btn--secondary:focus-visible {
  background: rgba(255, 255, 255, 0.09);
  text-decoration: none;
}

.btn--outline {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 4px;
}

.btn--outline:hover,
.btn--outline:focus-visible {
  background: rgba(77, 168, 212, 0.12);
  text-decoration: none;
}

.btn--orange {
  background: var(--color-accent2);
  color: #fff;
  border-color: transparent;
  border-radius: 4px;
}

.btn--orange:hover,
.btn--orange:focus-visible {
  background: #b55825;
  text-decoration: none;
}

/* CTA «Запросить» на страницах продуктов */
.product-page__cta .btn--primary {
  background: var(--color-accent2);
  color: #fff;
}

.product-page__cta .btn--primary:hover,
.product-page__cta .btn--primary:focus-visible {
  background: #b55825;
  text-decoration: none;
}

/* Comparison table */
.table-scroll,
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: rgba(17, 34, 68, 0.4);
}

.compare-table,
.comparison-table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.compare-table th,
.compare-table td,
.comparison-table th,
.comparison-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: middle;
  white-space: nowrap;
}

.compare-table thead th,
.comparison-table thead th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--color-bg-section);
  backdrop-filter: blur(8px);
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-bottom: 2px solid var(--color-accent);
}

.compare-table tbody tr:nth-child(odd),
.comparison-table tbody tr:nth-child(odd) {
  background: rgba(17, 34, 68, 0.25);
}

.compare-table tbody tr:hover td,
.comparison-table tbody tr:hover td {
  background: rgba(41, 182, 246, 0.05);
}

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

/* Product cards */
.cards-grid,
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.product-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 16px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border-color: var(--color-accent);
}

.product-card__image {
  height: auto;
  min-height: 220px;
  width: 100%;
  background: #0d1525;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.product-card__image img,
.product-card img {
  width: 100%;
  height: 220px;
  box-sizing: border-box;
  object-fit: contain;
  background: #0d1525;
  padding: 24px;
  display: block;
  transition: transform 0.3s ease;
}

.product-card:hover .product-card__image img,
.product-card:hover img {
  transform: scale(1.04);
}

.img-placeholder {
  display: none;
  color: var(--color-text-muted);
  font-size: 14px;
  text-align: center;
  padding: 10px;
}

.product-img:has(img[style*="none"]) .img-placeholder {
  display: block;
}

.product-img:has(img[style*="none"]) {
  align-items: center;
  justify-content: center;
}

.product-card__title {
  margin: 0 0 8px;
  font-size: 18px;
}

.product-card__meta {
  margin: 0 0 14px;
  color: var(--color-text-muted);
}

/* Product pages */
.product-page {
  padding-top: 18px;
}

.product-page__back {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--color-text-muted);
  margin-bottom: 16px;
}

.product-page__header h1 {
  margin: 0 0 6px;
  font-size: clamp(26px, 3vw, 34px);
  line-height: 1.15;
  color: var(--color-text);
}

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

.product-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 16px;
}

.product-gallery__main {
  height: 400px;
  background: var(--color-bg-card);
  border-radius: 16px;
  border: 1px solid var(--color-border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.product-gallery__thumbs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.product-gallery__thumb {
  height: 80px;
  background: var(--color-bg-card);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  overflow: hidden;
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-gallery__thumb img {
  height: 100%;
  width: auto;
  object-fit: contain;
  display: block;
}

.product-page__note {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--color-text-muted);
  font-style: italic;
}

/* Product: specs table */
.specs-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: rgba(17, 34, 68, 0.35);
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table th,
.specs-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

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

.specs-table tbody tr:hover {
  background: rgba(41, 182, 246, 0.07);
}

.specs-table .specs-table__param {
  width: 38%;
  color: var(--color-text-muted);
  font-weight: 500;
  background: transparent;
}

.specs-table .specs-table__value {
  color: #ffffff;
}

/* Product: Kavatronic vs Dynamixel */
.product-compare {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: stretch;
}

.product-compare__col {
  flex: 1 1 280px;
  border-radius: 14px;
  padding: 16px;
  border: 1px solid var(--color-border);
}

.product-compare__col--kava {
  background: rgba(41, 182, 246, 0.1);
  border-color: rgba(41, 182, 246, 0.35);
}

.product-compare__col--dyn {
  background: rgba(17, 34, 68, 0.45);
  border-color: var(--color-border);
  color: var(--color-text);
}

.product-compare__col h3 {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.3;
}

.product-compare__col--kava h3 {
  color: var(--color-accent);
}

.product-compare__col--dyn h3 {
  color: var(--color-text-muted);
}

.product-compare__specs {
  margin: 0;
  display: grid;
  gap: 10px;
}

.product-compare__specs dt {
  margin: 0;
  font-size: 12px;
  color: var(--color-text-muted);
}

.product-compare__specs dd {
  margin: 2px 0 0;
  font-size: 14px;
}

.product-compare__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
  font-size: 13px;
  color: var(--color-text-muted);
  font-style: italic;
}

.product-applications ul {
  margin: 0;
  padding-left: 1.2em;
  color: var(--color-text-muted);
}

.product-applications li {
  margin-bottom: 6px;
}

.product-page__cta {
  margin-top: 28px;
}

/* Servo works cards */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.info-card {
  background: rgba(17, 34, 68, 0.35);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 16px;
}

.info-card h3 {
  margin: 0 0 10px;
  font-size: 16px;
  color: var(--color-text);
}

.info-card__icon {
  display: inline-block;
  margin-right: 8px;
}

.info-card p {
  margin: 0;
  color: var(--color-text-muted);
}

.seller-phrase {
  font-style: italic;
  color: var(--color-text-muted);
}

/* Workflow */
.workflow {
  margin-top: 16px;
  background: rgba(17, 34, 68, 0.3);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 16px;
}

.workflow__title {
  margin: 0 0 12px;
  font-size: 16px;
  color: var(--color-text);
}

.workflow__steps {
  display: flex;
  align-items: stretch;
  gap: 12px;
}

.workflow__step {
  flex: 1 1 0;
  background: rgba(10, 22, 40, 0.5);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 12px;
}

.workflow__step-title {
  font-weight: 700;
  margin-bottom: 6px;
}

.workflow__step-text {
  color: var(--color-text-muted);
}

.workflow__arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-weight: 700;
  padding: 0 2px;
}

/* Servo anatomy list (index) */
.servo-intro-list {
  list-style: none;
  padding: 0;
  max-width: 800px;
  margin: 0 auto;
}

.servo-intro-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.servo-intro-list .servo-icon {
  font-size: 1.5rem;
  min-width: 36px;
}

.servo-intro-list strong {
  color: var(--color-accent);
  display: block;
  margin-bottom: 8px;
}

.servo-intro-list .servo-intro__text {
  margin: 0;
  line-height: 1.55;
}

#servo-expand-btn {
  display: block;
  margin: 24px auto;
  padding: 10px 24px;
  background: transparent;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.95rem;
}

#servo-expand-btn:hover {
  background: var(--color-accent);
  color: #fff;
}

#servo-detail {
  max-width: 800px;
  margin: 0 auto;
}

#servo-detail .detail-block {
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
}

#servo-detail .detail-block strong {
  color: var(--color-accent);
}

.servo-read-more {
  display: block;
  text-align: center;
  margin: 24px auto;
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.95rem;
}

.servo-read-more:hover {
  text-decoration: underline;
}

/* Form */
.lead-form {
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 16px;
  background: rgba(17, 34, 68, 0.25);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.field {
  display: grid;
  gap: 6px;
}

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

.field__label {
  color: var(--color-text);
  font-size: 13px;
}

input,
select,
textarea {
  width: 100%;
  padding: 12px 12px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: rgba(8, 16, 32, 0.6);
  color: var(--color-text);
  outline: none;
}

textarea {
  resize: vertical;
  min-height: 110px;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(41, 182, 246, 0.55);
  box-shadow: 0 0 0 3px rgba(41, 182, 246, 0.12);
}

.form-actions {
  margin-top: 12px;
}

.contacts-note {
  margin: 12px 0 0;
  color: var(--color-text-muted);
  font-size: 13px;
}

.contacts-direct + .contacts-note {
  margin-top: 8px;
}

.contacts-note + .contacts-note {
  margin-top: 6px;
}

.contacts-note a {
  color: var(--color-accent);
}

.contacts-note a:hover,
.contacts-note a:focus-visible {
  color: #5ec8ff;
}

.contact-form {
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 16px;
  background: rgba(17, 34, 68, 0.25);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-form .form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.contact-form select,
.contact-form textarea {
  width: 100%;
}

.contact-form__error {
  margin: 0;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid rgba(212, 98, 42, 0.45);
  background: rgba(212, 98, 42, 0.12);
  color: #f0c4a8;
  font-size: 14px;
}

.contact-form__error[hidden] {
  display: none !important;
}

.btn-accent2 {
  background: var(--color-accent2);
  color: #fff;
  border-color: transparent;
  border-radius: 4px;
  width: 100%;
  margin-top: 4px;
}

.btn-accent2:hover,
.btn-accent2:focus-visible {
  background: #b55825;
  text-decoration: none;
}

.btn-accent2:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

body.kvt-modal-open {
  overflow: hidden;
}

/* Success modal: один слой grid — backdrop и панель в одной ячейке, центр по viewport */
.kvt-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  width: 100%;
  max-width: 100vw;
  height: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  place-items: center;
  overflow: auto;
  overscroll-behavior: contain;
}

.kvt-modal[hidden] {
  display: none !important;
}

.kvt-modal__backdrop {
  grid-column: 1;
  grid-row: 1;
  place-self: stretch;
  width: 100%;
  min-height: 100%;
  background: rgba(5, 8, 14, 0.72);
  backdrop-filter: blur(4px);
}

.kvt-modal__panel {
  grid-column: 1;
  grid-row: 1;
  place-self: center;
  position: relative;
  z-index: 1;
  width: min(400px, calc(100vw - 32px));
  max-width: 400px;
  box-sizing: border-box;
  margin: clamp(16px, 4vw, 28px);
  padding: 28px 24px 24px;
  border-radius: 16px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.45);
  text-align: center;
}

.kvt-modal--open .kvt-modal__panel {
  animation: kvt-modal-in 0.22s ease-out;
}

@keyframes kvt-modal-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .kvt-modal--open .kvt-modal__panel {
    animation: none;
  }
}

.kvt-modal__brand {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 16px;
}

/* Только модалка: без наследования .logo-img; пропорции через contain + одна ось по max */
.kvt-modal__logo {
  display: block;
  width: auto;
  height: auto;
  max-width: min(200px, 100%);
  max-height: 56px;
  object-fit: contain;
  object-position: center;
  margin: 0 auto;
  flex-shrink: 0;
}

.kvt-modal__title {
  margin: 0 0 10px;
  font-size: 1.35rem;
  color: #fff;
}

.kvt-modal__text {
  margin: 0 0 20px;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

.kvt-modal__close {
  width: 100%;
}

/* About page */
.about-hero {
  margin: -32px -20px 0;
  padding: 48px 20px 40px;
  text-align: center;
  background: linear-gradient(180deg, #13161d 0%, #1a2035 100%);
  border-bottom: 1px solid var(--color-border);
  box-shadow: inset 0 -1px 0 rgba(77, 168, 212, 0.1);
}

.about-hero__logo {
  height: 120px;
  width: auto;
  display: block;
  margin: 0 auto 20px;
}

.about-hero__title {
  margin: 0 0 12px;
  font-size: clamp(36px, 5vw, 52px);
  line-height: 1.1;
  color: #fff;
}

.about-hero__tagline {
  margin: 0 auto;
  max-width: 42ch;
  font-size: clamp(16px, 2vw, 18px);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.about-hero__rule {
  margin: 28px auto 0;
  max-width: 120px;
  border: none;
  border-top: 1px solid var(--color-border);
}

.about-section {
  margin-top: 48px;
}

.about-page .section__header h2 {
  margin-bottom: 16px;
}

.about-prose {
  margin: 0;
  max-width: 72ch;
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.65;
}

.about-prose p {
  margin: 0 0 1em;
}

.about-prose p:last-child {
  margin-bottom: 0;
}

.about-values {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 8px;
}

.about-values__item {
  flex: 1 1 240px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.about-values__icon {
  display: block;
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.about-values__item h3 {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text);
}

.about-values__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-text-muted);
}

.about-products-cta {
  text-align: center;
  padding: 8px 0 8px;
}

.about-products-cta .section__header {
  text-align: center;
}

.about-products-cta .section__header h2::after {
  margin-left: auto;
  margin-right: auto;
}

.about-products-cta .about-prose {
  margin-left: auto;
  margin-right: auto;
}

.about-products-cta .btn {
  margin-top: 20px;
}

.about-markets {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 8px;
}

.about-markets__tile {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
}

.about-markets__icon {
  display: block;
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.about-markets__tile h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text);
}

.about-markets__tile p {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--color-text-muted);
}

.about-cta {
  margin-top: 56px;
  padding: 32px 24px;
  text-align: center;
  background: var(--color-bg-section);
  border: 1px solid var(--color-border);
  border-radius: 16px;
}

.about-cta__title {
  margin: 0 0 20px;
  font-size: clamp(20px, 2.5vw, 24px);
  font-weight: 600;
  color: var(--color-text);
}

.about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  align-items: center;
}

/* Article page (single post) */
.article-page {
  padding-top: 8px;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
  list-style-type: none;
  font-size: 13px;
  color: var(--color-text-muted);
}

.breadcrumbs li {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.breadcrumbs li:not(:last-child)::after {
  content: "→";
  color: var(--color-text-muted);
  opacity: 0.65;
  font-size: 12px;
}

.breadcrumbs a {
  color: var(--color-accent);
  text-decoration: none;
}

.breadcrumbs a:hover,
.breadcrumbs a:focus-visible {
  text-decoration: underline;
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-text);
}

.article-head {
  margin-bottom: 32px;
}

.article-head__badge {
  display: inline-block;
  padding: 4px 10px;
  margin-bottom: 14px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #fff;
  background: var(--color-accent);
  border-radius: 4px;
}

.article-head__title {
  margin: 0 0 12px;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.2;
  color: var(--color-text);
}

.article-head__meta {
  margin: 0;
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.45;
}

.article-body {
  max-width: 68ch;
}

.article-body p {
  margin: 0 0 1.15em;
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.7;
}

.article-body h2 {
  margin: 2em 0 0.75em;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.3;
  color: var(--color-text);
}

.article-body h2:first-of-type {
  margin-top: 1.25em;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.15em;
  padding-left: 1.35em;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.article-body li {
  margin-bottom: 0.45em;
}

.article-body li:last-child {
  margin-bottom: 0;
}

.article-promo {
  margin: 40px 0 0;
  padding: 24px 22px;
  background: rgba(77, 168, 212, 0.12);
  border: 1px solid rgba(77, 168, 212, 0.28);
  border-radius: 14px;
}

.article-promo--card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
}

.article-promo__text {
  margin: 0 0 18px;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--color-text);
  max-width: 52ch;
}

.article-promo__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.article-page__back {
  display: inline-block;
  margin-top: 32px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
}

.article-page__back:hover,
.article-page__back:focus-visible {
  text-decoration: underline;
}

.article-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.article-nav a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

.article-nav a:hover,
.article-nav a:focus-visible {
  text-decoration: underline;
}

.article-nav__prev,
.article-nav__next {
  flex: 1 1 240px;
}

.article-nav__center {
  flex: 0 0 auto;
}

.article-nav__center a {
  color: var(--color-text-muted);
  font-weight: 600;
}

.article-nav__next {
  text-align: right;
}

/* Articles listing */
.articles-page__intro {
  margin-bottom: 28px;
}

.articles-page__intro h1 {
  margin: 0 0 8px;
  font-size: clamp(26px, 3vw, 32px);
  line-height: 1.2;
}

.articles-page__subtitle {
  margin: 0;
  max-width: 56ch;
  color: var(--color-text-muted);
  font-size: 1rem;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.article-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.article-card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--color-accent) 50%, transparent);
}

.article-card__badge {
  align-self: flex-start;
  display: inline-block;
  padding: 4px 10px;
  margin-bottom: 12px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #fff;
  background: var(--color-accent);
  border-radius: 4px;
}

.article-card__title {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text);
}

.article-card__date {
  margin: 0 0 12px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.article-card__excerpt {
  margin: 0 0 16px;
  flex: 1 1 auto;
  font-size: 14px;
  line-height: 1.55;
  color: var(--color-text-muted);
}

.article-card__link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
}

.article-card__link:hover,
.article-card__link:focus-visible {
  text-decoration: underline;
}

/* Footer */
.site-footer {
  padding: 16px 20px;
  font-size: 12px;
  color: var(--color-text-muted);
  background: var(--color-header-bg);
  border-top: 1px solid var(--color-border);
}

.site-footer__inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
}

.site-footer__copy {
  margin: 0;
}

.site-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

.site-footer__links a {
  color: var(--color-accent);
  text-decoration: none;
}

.site-footer__links a:hover,
.site-footer__links a:focus-visible {
  text-decoration: underline;
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* Responsive */
@media (max-width: 768px) {
  .site-header {
    flex-wrap: wrap;
    align-items: center;
  }

  .site-header__cta {
    order: 2;
    margin-left: auto;
  }

  .hamburger {
    display: flex;
  }

  #mobile-menu.site-nav.mobile-menu {
    display: none;
    width: 100%;
    flex-basis: 100%;
    order: 3;
    flex-direction: column;
    align-items: stretch;
    padding: 0;
    margin-top: 4px;
    border-top: 1px solid var(--color-border);
    background: var(--color-header-bg);
  }

  #mobile-menu.site-nav.mobile-menu.open {
    display: flex;
  }

  #mobile-menu.site-nav.mobile-menu ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }

  #mobile-menu.site-nav.mobile-menu a {
    padding: 14px 24px;
    border-bottom: 1px solid var(--color-border);
    border-radius: 0;
    color: var(--color-text);
  }

  #mobile-menu.site-nav.mobile-menu a:hover,
  #mobile-menu.site-nav.mobile-menu a:focus-visible {
    color: var(--color-accent);
    background: rgba(41, 182, 246, 0.05);
    text-decoration: none;
  }

  .hamburger:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
  }

  main {
    padding: 22px 16px 52px;
  }

  main.container {
    padding-left: 16px;
    padding-right: 16px;
  }

  #hero.hero {
    margin: -22px -16px 0;
    min-height: 70vh;
    padding: 80px 16px 60px;
  }

  #hero.hero h1 {
    font-size: 2rem;
  }

  main#home > section.section:nth-of-type(even):not(#hero) {
    margin-left: -16px;
    margin-right: -16px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .section {
    padding: 48px 0;
  }

  p {
    max-width: 100%;
  }

  .comparison-table,
  .compare-table {
    font-size: 0.8rem;
  }

  .products-grid,
  .cards-grid {
    grid-template-columns: 1fr;
  }

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

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

  .workflow__arrow {
    transform: rotate(90deg);
    padding: 6px 0;
  }

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

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

  .logo-img--home {
    height: 50px;
  }

  .product-compare {
    flex-direction: column;
  }

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

  .about-hero {
    margin: -22px -16px 0;
    padding: 36px 16px 32px;
  }

  .about-markets {
    grid-template-columns: 1fr;
  }

  .about-values {
    flex-direction: column;
  }
}

@media (min-width: 769px) {
  .hamburger {
    display: none !important;
  }

  .products-grid,
  .cards-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}