:root {
  --brand-50: #f3f7fc;
  --brand-100: #e6eef8;
  --brand-200: #cbdcf0;
  --brand-300: #a9c3e1;
  --brand-400: #84a5cc;
  --brand-500: #6186b5;
  --brand-600: #4c6f9d;
  --brand-700: #3d5a81;
  --brand-800: #314967;
  --brand-900: #273b54;
  --brand-950: #192839;
  --color-bg: #f5f8fc;
  --color-surface: #ffffff;
  --color-surface-soft: #edf3fa;
  --color-surface-strong: #dce8f5;
  --color-text: #1b2a3a;
  --color-text-muted: #5d6c7d;
  --color-primary: var(--brand-700);
  --color-primary-hover: var(--brand-800);
  --color-accent: var(--brand-600);
  --color-accent-hover: var(--brand-700);
  --color-border: #d6e0ec;
  --color-border-strong: #afc1d6;
  --color-focus: #376fae;
  --color-white: #ffffff;
  --color-success: #28775f;
  --color-danger: #b84242;
  --shadow-sm: 0 4px 16px rgba(39, 59, 84, 0.08);
  --shadow-md: 0 16px 40px rgba(39, 59, 84, 0.14);
  --shadow-lg: 0 24px 64px rgba(39, 59, 84, 0.18);
  --radius-sm: 0.55rem;
  --radius-md: 0.9rem;
  --radius-lg: 1.35rem;
  --container: 1180px;
  --header-height: 4.75rem;
  --transition: 180ms ease;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  text-underline-offset: 0.2em;
}

a:hover { text-decoration: underline; }

button,
input,
textarea { font: inherit; }

button { cursor: pointer; }

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

:focus-visible {
  outline: 3px solid rgba(55, 111, 174, 0.4);
  outline-offset: 3px;
}

::selection {
  background: var(--brand-200);
  color: var(--brand-950);
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.5rem;
  left: 0.5rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--brand-800);
  color: var(--color-white);
  font-weight: 750;
  transform: translateY(-160%);
}

.skip-link:focus { transform: translateY(0); }

 

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid rgba(175, 193, 214, 0.7);
  background: rgba(255, 255, 255, 0.93);
  box-shadow: 0 1px 0 rgba(39, 59, 84, 0.02);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

 

.site-header__inner {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: var(--header-height);
  align-items: center;
  gap: 1.25rem;
}

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  color: var(--brand-600);
  text-decoration: none;
  transition: color var(--transition), transform var(--transition);
}

.brand__name {
display: inline-block;
  margin: 0;
  padding: 0;
  background: linear-gradient(
    135deg,
    var(--brand-500),
    var(--brand-600)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;

  font-family: "Arial Black", "Segoe UI", Arial, sans-serif;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.045em;
  line-height: 1;
 

   
  transform: scaleX(1.08);
  transform-origin: left center;
}

.brand:hover,
.brand:focus-visible {
  color: var(--brand-700);
  text-decoration: none;
  transform: translateY(-1px);
}

.brand:hover .brand__name,
.brand:focus-visible .brand__name {
  color: var(--brand-700);
}

.brand:active {
  transform: translateY(0);
}

 

.site-navigation {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
}

.site-navigation a {
color: var(--brand-900);
text-decoration: none;
white-space: nowrap;
}

.site-header__actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.75rem;
}

.menu-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.55rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 0.25rem 0;
  border-radius: 999px;
  background: var(--brand-700);
}

/* ========================================
   Buttons
   ======================================== */

.button {
  display: inline-flex;
  min-height: 2.9rem;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.05rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 760;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition: background-color var(--transition), border-color var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.button:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.button--primary {
  border-color: var(--brand-600);
  background: linear-gradient(135deg, var(--brand-500), var(--brand-600));
  color: var(--color-white);
  box-shadow: 0 9px 20px rgba(76, 111, 157, 0.24);
}

.button--primary:hover,
.button--primary:focus-visible {
  border-color: var(--brand-700);
  background: linear-gradient(135deg, var(--brand-600), var(--brand-700));
  color: var(--color-white);
  box-shadow: 0 11px 24px rgba(61, 90, 129, 0.28);
}

.button--secondary {
  border-color: var(--brand-300);
  background: rgba(255, 255, 255, 0.72);
  color: var(--brand-700);
}

.button--secondary:hover,
.button--secondary:focus-visible {
  border-color: var(--brand-500);
  background: var(--brand-100);
  color: var(--brand-800);
}

/* ========================================
   Page sections
   ======================================== */

.section { padding: clamp(3.5rem, 7vw, 6rem) 0; }

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

.section--soft {
  background: linear-gradient(180deg, var(--brand-50) 0%, var(--color-surface-soft) 100%);
}

.section-heading {
  max-width: 780px;
  margin: 0 auto clamp(2rem, 4vw, 3.25rem);
  text-align: center;
}

.eyebrow,
.hero-card__eyebrow,
.product-card__type {
  margin: 0 0 0.55rem;
  color: var(--brand-600);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p { margin-top: 0; }

h1,
h2,
h3 {
  color: var(--brand-900);
  line-height: 1.14;
}

h1 {
  max-width: 850px;
  margin-bottom: 1rem;
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  letter-spacing: -0.05em;
}

h2 {
  margin-bottom: 0.85rem;
  font-size: clamp(1.8rem, 3.6vw, 3rem);
  letter-spacing: -0.04em;
}

h3 {
  margin-bottom: 0.65rem;
  font-size: 1.2rem;
}

.section-description,
.hero__lead {
  color: var(--color-text-muted);
  font-size: clamp(1rem, 1.5vw, 1.14rem);
}

/* ========================================
   Hero
   ======================================== */

.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(3.5rem, 8vw, 7rem) 0;
  background: radial-gradient(circle at 83% 18%, rgba(169, 195, 225, 0.65), transparent 28%), radial-gradient(circle at 10% 90%, rgba(203, 220, 240, 0.7), transparent 30%), linear-gradient(135deg, #fbfdff 0%, var(--brand-100) 100%);
}

.hero::before {
  position: absolute;
  inset: auto -8rem -12rem auto;
  width: 28rem;
  height: 28rem;
  border: 1px solid rgba(97, 134, 181, 0.18);
  border-radius: 50%;
  content: "";
}

.hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
}

.hero__lead {
  max-width: 740px;
  margin-bottom: 1.6rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.hero__quick-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 1.25rem;
}

.hero__quick-links a {
  color: var(--brand-800);
  font-size: 0.92rem;
  font-weight: 750;
}

.hero__quick-links span { color: var(--brand-500); }

.hero-card,
.info-card,
.solution-card,
.step-card,
.product-card,
.industry-card,
.about-card,
.contact-card,
.request-form,
.experience-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.hero-card {
  padding: clamp(1.35rem, 3vw, 2rem);
  border-color: rgba(132, 165, 204, 0.55);
  background: rgba(255, 255, 255, 0.86);
  box-shadow: var(--shadow-md);
}

.hero-card h2 { font-size: clamp(1.35rem, 2vw, 1.75rem); }

.hero-card__note {
  margin: 1rem 0 0;
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.service-list {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: service;
}

.service-list li {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: 0.65rem;
  counter-increment: service;
}

.service-list li::before {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border-radius: 50%;
  background: var(--brand-100);
  color: var(--brand-700);
  font-size: 0.7rem;
  font-weight: 850;
  content: counter(service, decimal-leading-zero);
}

.service-list strong,
.service-list span { grid-column: 2; }

.service-list strong {
  margin-bottom: 0.1rem;
  color: var(--brand-800);
}

.service-list span {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

/* ========================================
   Cards and grids
   ======================================== */

.benefits-grid,
.solutions-grid,
.products-grid,
.clients-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.info-card,
.solution-card,
.step-card,
.product-card,
.industry-card {
  padding: 1.45rem;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.info-card:hover,
.solution-card:hover,
.step-card:hover,
.product-card:hover,
.industry-card:hover {
  border-color: var(--brand-300);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.info-card p,
.solution-card p,
.step-card p,
.product-card p,
.industry-card p,
.about-card p,
.contact-card p {
  margin-bottom: 0;
  color: var(--color-text-muted);
}

.card-number {
  display: inline-flex;
  margin-bottom: 1rem;
  color: var(--brand-600);
  font-size: 0.8rem;
  font-weight: 850;
  letter-spacing: 0.08em;
}

.tag {
  display: inline-flex;
  margin: 0.25rem 0.2rem 0 0;
  padding: 0.32rem 0.55rem;
  border: 1px solid var(--brand-200);
  border-radius: 999px;
  background: var(--brand-50);
  color: var(--brand-700);
  font-size: 0.75rem;
  font-weight: 700;
}

/* ========================================
   About
   ======================================== */

.about-grid {
  display: grid;
  grid-template-columns: minmax(230px, 0.7fr) minmax(0, 1.3fr);
  align-items: stretch;
  gap: 1.25rem;
}

.experience-card {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  justify-content: center;
  padding: 2rem;
  border-color: var(--brand-700);
  background: linear-gradient(145deg, var(--brand-500), var(--brand-800));
  color: var(--color-white);
  box-shadow: 0 18px 36px rgba(61, 90, 129, 0.24);
}

.experience-card strong {
  margin-bottom: 0.5rem;
  color: var(--color-white);
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.05;
}

.experience-card span { color: rgba(255, 255, 255, 0.84); }

.about-card { padding: clamp(1.5rem, 3vw, 2.4rem); }

/* ========================================
   Reviews carousel
   ======================================== */

.reviews-section__header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.reviews-section__header .section-heading {
  max-width: 780px;
  margin: 0;
  text-align: left;
}

.reviews-carousel-wrap { position: relative; }

.reviews-carousel {
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  padding: 0.25rem 0 1rem;
  overscroll-behavior-x: contain;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  scrollbar-color: var(--brand-400) transparent;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.reviews-carousel::-webkit-scrollbar { height: 0.65rem; }

.reviews-carousel::-webkit-scrollbar-thumb {
  border: 0.18rem solid transparent;
  border-radius: 999px;
  background: var(--brand-400);
  background-clip: padding-box;
}

.reviews-carousel > .info-card {
  position: relative;
  box-sizing: border-box;
  display: flex;
  min-height: 300px;
  flex: 0 0 min(370px, calc(100vw - 3rem));
  flex-direction: column;
  border-color: var(--brand-200);
  scroll-snap-align: start;
}

.review-card::after {
  position: absolute;
  right: 1rem;
  bottom: 0.75rem;
  color: var(--brand-500);
  font-size: 1.25rem;
  opacity: 0.72;
  content: "→";
}

.reviews-carousel > .info-card:last-child::after { display: none; }

.review-author {
  margin-top: auto !important;
  padding-top: 1rem;
  font-size: 0.86rem;
}

.reviews-controls {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  gap: 0.65rem;
}

.reviews-count {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 680;
  white-space: nowrap;
}

.reviews-arrow {
  display: inline-grid;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  padding: 0;
  border: 1px solid var(--brand-300);
  border-radius: 50%;
  background: var(--brand-50);
  color: var(--brand-700);
  font-size: 1.2rem;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

.reviews-arrow:hover,
.reviews-arrow:focus-visible {
  border-color: var(--brand-700);
  background: var(--brand-700);
  color: var(--color-white);
  transform: translateY(-1px);
}

.reviews-hint {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.85rem 0 0;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.reviews-hint__icon {
  color: var(--brand-600);
  font-size: 1.2rem;
  line-height: 1;
}

/* ========================================
   FAQ
   ======================================== */

.faq-list {
  display: grid;
  max-width: 900px;
  gap: 0.85rem;
  margin-inline: auto;
}

.faq-list details {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-list details[open] {
  border-color: var(--brand-300);
  box-shadow: var(--shadow-sm);
}

.faq-list summary {
  position: relative;
  padding: 1.05rem 3.25rem 1.05rem 1.15rem;
  color: var(--brand-800);
  cursor: pointer;
  font-weight: 750;
  list-style: none;
}

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

.faq-list summary::after {
  position: absolute;
  top: 50%;
  right: 1.15rem;
  color: var(--brand-600);
  font-size: 1.4rem;
  font-weight: 400;
  content: "+";
  transform: translateY(-50%);
}

.faq-list details[open] summary::after { content: "−"; }

.faq-list details p {
  margin: 0;
  padding: 0 1.15rem 1.15rem;
  color: var(--color-text-muted);
}

/* ========================================
   Contacts and forms
   ======================================== */

.contacts-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 1.25rem;
}

.request-form,
.contact-card { padding: clamp(1.4rem, 3vw, 2rem); }

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

.form-field {
  display: grid;
  gap: 0.45rem;
  margin-bottom: 1rem;
}

.form-field label {
  color: var(--brand-800);
  font-size: 0.9rem;
  font-weight: 720;
}

.form-field input,
.form-field textarea {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
  transition: border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
}

.form-field textarea {
  min-height: 7rem;
  resize: vertical;
}

.form-field input:hover,
.form-field textarea:hover { border-color: var(--brand-400); }

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--brand-500);
  background: #fbfdff;
  box-shadow: 0 0 0 3px rgba(97, 134, 181, 0.17);
  outline: none;
}

.form-note,
.form-result {
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.contact-card address { font-style: normal; }

.contact-card a { font-weight: 720; }

/* ========================================
   Footer
   ======================================== */

.site-footer {
  padding: 3rem 0 1.5rem;
  background: radial-gradient(circle at 85% 0%, rgba(132, 165, 204, 0.24), transparent 34%), linear-gradient(135deg, var(--brand-900), var(--brand-800));
  color: rgba(255, 255, 255, 0.78);
}

.site-footer__links {
  display: grid;
  grid-template-columns: repeat(3, minmax(180px, 1fr));
  align-items: start;
  gap: 2rem;
  padding-bottom: 2rem;
}

.site-footer__links-group {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.site-footer__links-title {
  margin-bottom: 0.25rem;
  color: var(--brand-200);
  font-size: 0.86rem;
  font-weight: 850;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.92rem;
}

.site-footer a:hover,
.site-footer a:focus-visible { color: var(--color-white); }

.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(203, 220, 240, 0.22);
  font-size: 0.88rem;
}

/* ========================================
   Modal consultation dialog
   ======================================== */

.modal {
  position: fixed;
  z-index: 500;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(25, 40, 57, 0.64);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.modal[aria-hidden="false"] {
  opacity: 1;
  pointer-events: auto;
}

.modal__dialog {
  position: relative;
  width: min(100%, 520px);
  max-height: calc(100dvh - 2rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--brand-200);
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: var(--shadow-lg);
}

.modal__dialog .request-form {
  border: 0;
  box-shadow: none;
}

.modal__close {
  position: absolute;
  z-index: 1;
  top: 0.7rem;
  right: 0.7rem;
  display: grid;
  width: 2.3rem;
  height: 2.3rem;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--brand-100);
  color: var(--brand-800);
  font-size: 1.35rem;
}

.modal__close:hover { background: var(--brand-200); }

/* ========================================
   Mobile menu
   ======================================== */

.mobile-menu {
  position: fixed;
  z-index: 400;
  inset: 0;
  visibility: hidden;
  pointer-events: none;
}

.mobile-menu[aria-hidden="false"] {
  visibility: visible;
  pointer-events: auto;
}

.mobile-menu__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(25, 40, 57, 0.64);
  opacity: 0;
  transition: opacity var(--transition);
}

.mobile-menu[aria-hidden="false"] .mobile-menu__backdrop { opacity: 1; }

.mobile-menu__panel {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  width: min(88vw, 390px);
  height: 100%;
  flex-direction: column;
  padding: 1.25rem;
  background: var(--color-white);
  box-shadow: var(--shadow-lg);
  transform: translateX(105%);
  transition: transform var(--transition);
}

.mobile-menu[aria-hidden="false"] .mobile-menu__panel { transform: translateX(0); }

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.mobile-menu__title {
  color: var(--brand-800);
  font-weight: 850;
}

.mobile-menu__close {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: var(--brand-100);
  color: var(--brand-800);
  font-size: 1.45rem;
}

.mobile-menu__nav {
  display: grid;
  gap: 0.85rem;
  padding: 1.25rem 0;
}

.mobile-menu__nav a {
  color: var(--brand-800);
  font-weight: 750;
}

.mobile-menu__button { width: 100%; }

.mobile-menu__contacts {
  display: grid;
  gap: 0.45rem;
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

.mobile-menu__contacts a { font-weight: 720; }

/* ========================================
   Scroll to top
   ======================================== */

.scroll-top {
  position: fixed;
  z-index: 90;
  right: 1rem;
  bottom: 1rem;
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  border: 1px solid var(--brand-600);
  border-radius: 50%;
  background: var(--brand-600);
  color: var(--color-white);
  box-shadow: 0 12px 24px rgba(61, 90, 129, 0.28);
}

.scroll-top:hover {
  border-color: var(--brand-800);
  background: var(--brand-800);
}

/* ========================================
   Responsive: desktop navigation buttons
   ======================================== */

@media (min-width: 861px) {
  .site-navigation a {
    display: inline-flex;
    min-height: 2.65rem;
    align-items: center;
    justify-content: center;
    padding: 0.6rem 0.9rem;
    border: 1px solid rgba(97, 134, 181, 0.55);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.96);
    color: var(--brand-900);
    box-shadow: 0 3px 10px rgba(39, 59, 84, 0.1);
    font-size: 0.98rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.01em;
    transition: background-color var(--transition), border-color var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
  }

  .site-navigation a:hover,
  .site-navigation a:focus-visible {
    border-color: var(--brand-700);
    background: var(--brand-700);
    color: var(--color-white);
    box-shadow: 0 6px 14px rgba(39, 59, 84, 0.2);
    text-decoration: none;
    transform: translateY(-1px);
  }

  .site-navigation a:active { transform: translateY(0); }
}

@media (min-width: 861px) and (max-width: 1100px) {
  .site-header__inner { gap: 0.65rem; }

  .site-navigation { gap: 0.3rem; }

  .site-navigation a {
    min-height: 2.3rem;
    padding: 0.5rem 0.52rem;
    font-size: 0.72rem;
    font-weight: 780;
  }

  .site-header__call {
    min-height: 2.45rem;
    padding: 0.55rem 0.65rem;
    font-size: 0.74rem;
  }
}

@media (min-width: 1280px) {
  .site-navigation { gap: 0.65rem; }

  .site-navigation a {
    min-height: 2.8rem;
    padding-inline: 1rem;
    font-size: 1.02rem;
  }
}

@media (max-width: 1100px) {
  .benefits-grid,
  .solutions-grid,
  .products-grid,
  .clients-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 860px) {
  .site-navigation { display: none; }

  .site-header__actions {
    margin-left: auto;
    gap: 0.5rem;
  }

  .site-header__call {
    display: inline-flex;
    min-height: 2.55rem;
    padding: 0.6rem 0.75rem;
    font-size: 0.78rem;
  }

  .menu-toggle {
    display: block;
    flex-shrink: 0;
  }

  .hero__grid,
  .about-grid,
  .contacts-grid { grid-template-columns: 1fr; }

  .hero-card { max-width: 640px; }

  .reviews-section__header { display: block; }

  .reviews-section__header .section-heading { text-align: center; }

  .reviews-controls {
    justify-content: center;
    margin-top: 1rem;
  }

  .site-footer__links { grid-template-columns: repeat(2, minmax(180px, 1fr)); }

  .modal {
    align-items: start;
    overflow-y: auto;
    padding: max(0.75rem, env(safe-area-inset-top)) 0.75rem max(1rem, env(safe-area-inset-bottom));
  }

  .modal__dialog {
    width: 100%;
    max-height: calc(100dvh - 1.5rem);
    margin: 0 auto;
  }
}

@media (max-width: 620px) {
  .container { width: min(calc(100% - 1.25rem), var(--container)); }

  .section { padding: 3.5rem 0; }

  .benefits-grid,
  .solutions-grid,
  .products-grid,
  .clients-grid,
  .steps-grid,
  .form-row { grid-template-columns: 1fr; }

  .hero__actions .button { width: 100%; }

  .hero__quick-links {
    display: grid;
    gap: 0.65rem;
  }

  .reviews-carousel > .info-card { flex-basis: calc(100vw - 2.5rem); }

  .reviews-hint {
    justify-content: center;
    text-align: center;
  }

  .site-footer__links {
    grid-template-columns: 1fr;
    gap: 1.6rem;
  }

  .site-footer__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .modal {
    place-items: start center;
    padding-top: max(0.5rem, env(safe-area-inset-top));
  }

  .modal__dialog {
    max-height: calc(100dvh - 1rem);
    border-radius: var(--radius-sm);
  }

  .modal__dialog .request-form { padding: 1.25rem; }

  .modal__dialog .request-form h2 {
    padding-right: 2.5rem;
    font-size: 1.55rem;
  }
}

@media (max-width: 430px) {
  .site-header__inner { gap: 0.6rem; }

   

  

  .site-header__call {
    min-height: 2.45rem;
    padding: 0.55rem 0.6rem;
    font-size: 0.7rem;
  }

  .menu-toggle {
    width: 2.55rem;
    height: 2.55rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}