:root {
  --navy: #061b3a;
  --blue: #006fe6;
  --cyan: #00b8e6;
  --ink: #182130;
  --graphite: #303948;
  --muted: #667386;
  --line: #d9e4f0;
  --soft: #f4f8fc;
  --white: #ffffff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--graphite);
  background: var(--white);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto minmax(280px, 1fr) auto;
  align-items: center;
  gap: 22px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand img {
  display: block;
  width: min(292px, 42vw);
  height: auto;
}

.nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
  color: var(--navy);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.header-tools {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.language-switcher {
  display: inline-flex;
  border: 1px solid var(--line);
  background: var(--white);
}

.language-switcher button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 40px;
  padding: 0;
  color: var(--navy);
  background: transparent;
  border: 0;
  border-right: 1px solid var(--line);
  cursor: pointer;
  font: inherit;
  font-size: 0;
  font-weight: 900;
  line-height: 1;
}

.language-switcher button:last-child {
  border-right: 0;
}

.language-switcher button.active {
  color: var(--white);
  background: var(--blue);
}

.language-switcher img {
  display: block;
  width: 30px;
  height: 21px;
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.header-cta,
.button.primary {
  color: var(--white);
  background: var(--blue);
}

.button.secondary {
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  gap: clamp(36px, 6vw, 86px);
  min-height: 720px;
  padding: clamp(68px, 8vw, 112px) clamp(20px, 5vw, 72px);
  color: var(--white);
  background:
    linear-gradient(120deg, rgba(6, 27, 58, 0.98), rgba(6, 27, 58, 0.82)),
    repeating-linear-gradient(135deg, rgba(0, 184, 230, 0.14) 0 2px, transparent 2px 46px),
    var(--navy);
}

.hero-copy {
  align-self: center;
  max-width: 880px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

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

h1 {
  max-width: 850px;
  margin-bottom: 24px;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 1.03;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 22px;
  color: var(--navy);
  font-size: clamp(30px, 4vw, 52px);
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  color: var(--navy);
  font-size: 27px;
  line-height: 1.15;
}

.hero-lead {
  max-width: 760px;
  margin-bottom: 32px;
  color: #dce8f6;
  font-size: clamp(18px, 2vw, 22px);
}

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

.hero-visual {
  align-self: end;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: rgba(255, 255, 255, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.24);
}

.visual-card {
  min-height: 180px;
  padding: 26px;
  background: rgba(6, 27, 58, 0.62);
}

.visual-card.main {
  grid-column: 1 / -1;
  min-height: 210px;
  background:
    linear-gradient(135deg, rgba(0, 111, 230, 0.42), rgba(6, 27, 58, 0.72)),
    rgba(6, 27, 58, 0.7);
}

.visual-card span,
.number {
  display: inline-block;
  margin-bottom: 10px;
  color: var(--cyan);
  font-weight: 900;
}

.visual-card strong {
  display: block;
  margin-bottom: 10px;
  color: var(--white);
  font-size: 22px;
  line-height: 1.15;
}

.visual-card.main strong {
  font-size: clamp(34px, 4vw, 48px);
}

.visual-card p {
  margin-bottom: 0;
  color: #dce8f6;
}

.section {
  padding: clamp(72px, 9vw, 120px) clamp(20px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
}

.split {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: clamp(28px, 5vw, 76px);
}

.section-label {
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.section-content {
  max-width: 940px;
}

.section-content p,
.standard-grid p {
  color: #4e5b6d;
  font-size: 19px;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
}

.service-grid article {
  min-height: 390px;
  padding: clamp(30px, 4vw, 48px);
  background: var(--soft);
}

.service-grid p {
  color: #526074;
  font-size: 17px;
}

.cooperation {
  background: linear-gradient(180deg, #ffffff, #f4f8fc);
}

.cooperation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
}

.cooperation-intro {
  grid-column: 1 / -1;
  padding: clamp(34px, 5vw, 56px);
  background: var(--white);
}

.cooperation-intro h2 {
  max-width: 980px;
}

.cooperation-intro p {
  max-width: 920px;
  color: #4e5b6d;
  font-size: 19px;
}

.cooperation-grid article {
  min-height: 330px;
  padding: clamp(30px, 4vw, 46px);
  background: var(--white);
}

.cooperation-grid p {
  color: #526074;
  font-size: 17px;
}

.standard {
  background: var(--white);
}

.standard-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.65fr);
  gap: clamp(32px, 6vw, 86px);
  align-items: start;
}

.check-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 18px 18px 18px 48px;
  color: var(--navy);
  background: var(--soft);
  border: 1px solid var(--line);
  font-weight: 800;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 23px;
  width: 12px;
  height: 12px;
  background: var(--cyan);
}

.story {
  background: linear-gradient(180deg, #ffffff, #f7fbff);
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(310px, 470px);
  gap: clamp(28px, 6vw, 80px);
  padding: clamp(72px, 9vw, 120px) clamp(20px, 5vw, 72px);
  color: var(--white);
  background: linear-gradient(125deg, var(--navy), #0b3266);
}

.contact h2 {
  color: var(--white);
}

.contact-copy p {
  max-width: 760px;
  color: #dce8f6;
  font-size: 19px;
}

.contact-card {
  align-self: center;
  display: grid;
  gap: 10px;
  padding: 32px;
  font-style: normal;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.08);
}

.contact-card strong {
  margin-bottom: 8px;
  font-size: 22px;
  line-height: 1.25;
}

.contact-card a {
  color: var(--white);
  font-size: 20px;
  font-weight: 900;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 24px clamp(20px, 5vw, 72px);
  color: #657386;
  border-top: 1px solid var(--line);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

@media (max-width: 1120px) {
  .site-header {
    grid-template-columns: 1fr;
  }

  .nav {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .header-cta {
    justify-self: start;
  }

  .header-tools {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .hero,
  .standard-grid,
  .contact {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 760px) {
  .brand img {
    width: 100%;
    max-width: 340px;
  }

  .hero {
    min-height: auto;
  }

  .hero-visual,
  .service-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .visual-card.main {
    grid-column: auto;
  }

  .site-footer {
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .site-header {
    padding: 14px 18px;
  }

  .nav {
    gap: 12px;
    font-size: 11px;
  }

  .language-switcher button {
    width: 46px;
    height: 38px;
  }

  .language-switcher img {
    width: 29px;
    height: 20px;
  }

  h1 {
    font-size: 40px;
  }

  h2 {
    font-size: 30px;
  }

  .contact-card a {
    font-size: 18px;
  }
}