:root {
  --bg: #f2f5fb;
  --surface: #ffffff;
  --surface-2: #eaf0fb;
  --ink: #0f1720;
  --muted: #5b6778;
  --line: rgba(0, 51, 160, 0.12);
  --accent: #0033a0;
  --accent-2: #2e5bff;
  --deep: #071a45;
  --shadow: 0 20px 44px rgba(0, 51, 160, 0.12);
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--ink);
}

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

.container {
  width: min(1160px, calc(100vw - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
  background: rgba(243, 244, 246, 0.82);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 78px;
  gap: 24px;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: linear-gradient(135deg, #2c63ff, #0033a0 58%, #071a45);
  color: #fff;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-text strong {
  font-size: 15px;
}

.brand-text small {
  color: var(--muted);
  font-size: 12px;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
}

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

.language-switcher {
  display: inline-flex;
  padding: 4px;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid var(--line);
  box-shadow: 0 8px 22px rgba(0, 51, 160, 0.08);
}

.lang-button {
  min-width: 52px;
  height: 36px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.lang-button.active {
  background: linear-gradient(135deg, #2f66ff, #0033a0);
  color: #ffffff;
}

.hero {
  padding: 72px 0 48px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  align-items: stretch;
}

.hero-copy,
.hero-card,
.card,
.contact-card {
  border-radius: var(--radius);
}

.hero-copy {
  background: linear-gradient(180deg, #ffffff, #f6f8fe);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 36px;
}

.eyeline,
.section-label {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.section-label.light {
  color: #88b5ff;
}

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

h1 {
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  line-height: 1.02;
  margin-bottom: 18px;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.5rem);
  line-height: 1.1;
  margin-bottom: 0;
}

h3 {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.hero-text,
.section-copy p,
.card p,
.contact-copy,
.contact-note,
.feature-list,
.hero-points {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  background: linear-gradient(135deg, #2f66ff, #0033a0);
  color: #fff;
}

.button.secondary {
  background: rgba(0, 51, 160, 0.06);
  color: var(--accent);
  border: 1px solid rgba(0, 51, 160, 0.15);
}

.hero-points,
.feature-list,
.contact-list {
  padding-left: 18px;
}

.hero-panel {
  display: flex;
}

.hero-card {
  width: 100%;
  background: linear-gradient(180deg, #0d2a74, #071a45 72%);
  color: #fff;
  padding: 24px;
  box-shadow: var(--shadow);
}

.hero-card-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.72);
}

.belt-visual {
  position: relative;
  height: 260px;
  margin: 28px 0;
  overflow: hidden;
  border-radius: 8px;
  background:
    radial-gradient(circle at top left, rgba(104, 146, 255, 0.26), transparent 35%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0));
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.belt {
  position: absolute;
  left: -10%;
  right: -10%;
  height: 52px;
  border-radius: 999px;
  background: linear-gradient(90deg, #7f8fa6 0%, #d8dde7 48%, #5f7088 100%);
  box-shadow:
    inset 0 2px 6px rgba(255, 255, 255, 0.22),
    inset 0 -6px 14px rgba(12, 16, 24, 0.22);
}

.belt::after {
  content: "";
  position: absolute;
  inset: 14px 18px;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.16), rgba(0, 0, 0, 0.2));
}

.belt-one {
  top: 42px;
  transform: rotate(-8deg);
}

.belt-two {
  top: 114px;
  transform: rotate(6deg);
}

.belt-three {
  top: 182px;
  transform: rotate(-5deg);
}

.hero-data {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.hero-data dt {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.62);
  margin-bottom: 6px;
}

.hero-data dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
}

.section {
  padding: 70px 0;
}

.section.muted {
  background: var(--surface-2);
}

.section.dark {
  background: var(--deep);
  color: #fff;
}

.section-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  align-items: start;
}

.section-heading {
  margin-bottom: 22px;
}

.cards {
  display: grid;
  gap: 18px;
}

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

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

.card,
.contact-card {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 24px;
}

.card h3,
.contact-card h3 {
  color: var(--accent);
}

.card.large {
  min-height: 100%;
}

.section.dark .contact-card {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: none;
}

.contact-note {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

@media (max-width: 980px) {
  .hero-grid,
  .section-grid,
  .contact-grid,
  .cards.three,
  .cards.two,
  .hero-data {
    grid-template-columns: 1fr;
  }

  .site-nav {
    display: none;
  }

  .header-controls {
    gap: 12px;
  }

  .hero-copy,
  .hero-card,
  .card,
  .contact-card {
    padding: 22px;
  }
}

@media (max-width: 640px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .header-controls {
    width: 100%;
    justify-content: space-between;
  }

  .language-switcher {
    margin-left: 0;
  }
}