:root {
  --bg: #f3f6fb;
  --surface: #ffffff;
  --surface-alt: #e9eef8;
  --ink: #10213a;
  --muted: #5c6b82;
  --line: rgba(16, 33, 58, 0.12);
  --brand: #123b74;
  --brand-strong: #0b2a55;
  --accent: #6da4d7;
  --shadow: 0 18px 48px rgba(14, 38, 78, 0.12);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --container: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(109, 164, 215, 0.28), transparent 32%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 52%, #edf1f8 100%);
  line-height: 1.7;
}

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

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

.container {
  width: min(calc(100% - 48px), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(20px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid rgba(16, 33, 58, 0.08);
}

.header-row {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) auto auto;
  gap: 20px;
  align-items: center;
  min-height: 84px;
}

.brand-mark {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-mark__name {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark__tagline {
  font-size: 0.82rem;
  color: var(--muted);
}

.main-nav ul,
.contact-list,
.footer-contacts,
.language-switcher,
.process-grid {
  margin: 0;
  padding: 0;
  list-style: none;
}

.main-nav ul {
  display: flex;
  gap: 24px;
  align-items: center;
}

.main-nav a {
  font-size: 0.95rem;
  color: var(--muted);
  transition: color 0.2s ease;
}

.main-nav a:hover,
.main-nav a.is-active {
  color: var(--brand-strong);
}

.main-nav {
  padding-top: 6px;
}

.language-switcher {
  display: flex;
  gap: 10px;
  justify-self: end;
  align-self: center;
}

.language-switcher a {
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--muted);
  background: rgba(18, 59, 116, 0.05);
}

.language-switcher a.is-current {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--accent));
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 5px 0;
  background: var(--ink);
}

.hero-section {
  padding: 88px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 32px;
  align-items: stretch;
}

.hero-copy,
.hero-panel,
.info-card,
.contact-card,
.process-card,
.stat-item,
.section-action,
.form-notice,
.contact-form,
.site-footer {
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-copy {
  background: linear-gradient(180deg, rgba(18, 59, 116, 0.98), rgba(9, 29, 61, 0.96));
  color: #fff;
  padding: 52px;
  border-radius: var(--radius-xl);
}

.hero-copy h1 {
  margin: 0;
  font-size: clamp(2.5rem, 3vw, 4.25rem);
  line-height: 1.1;
}

.eyebrow,
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.hero-subtitle {
  margin: 18px 0 0;
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.82);
}

.rich-text p {
  margin: 0 0 1em;
}

.rich-text p:last-child {
  margin-bottom: 0;
}

.hero-copy .rich-text {
  margin-top: 22px;
  max-width: 60ch;
  color: rgba(255, 255, 255, 0.92);
}

.hero-panel {
  position: relative;
  min-height: 380px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(18, 59, 116, 0.9), rgba(109, 164, 215, 0.55)),
    radial-gradient(circle at top right, rgba(255, 255, 255, 0.35), transparent 42%);
}

.hero-panel img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: screen;
  opacity: 0.72;
}

.hero-actions,
.section-action {
  margin-top: 28px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 600;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #81bce7 68%, #cbe8ff);
}

.btn-secondary {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.08);
}

.content-section {
  padding: 30px 0 46px;
}

.section-heading {
  max-width: 76ch;
  margin-bottom: 24px;
}

.section-heading h2 {
  margin: 0 0 16px;
  font-size: clamp(1.85rem, 2vw, 2.6rem);
  line-height: 1.2;
}

.card-grid {
  display: grid;
  gap: 22px;
}

.card-grid.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.info-card,
.contact-card,
.process-card,
.stat-item,
.form-notice,
.contact-form {
  background: rgba(255, 255, 255, 0.88);
  border-radius: var(--radius-lg);
}

.info-card,
.contact-card,
.process-card,
.contact-form {
  padding: 26px;
}

.info-card h3,
.contact-card h3,
.process-card h3 {
  margin: 0 0 12px;
  font-size: 1.12rem;
}

.stats-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat-item {
  padding: 28px 24px;
}

.stat-item strong {
  display: block;
  font-size: 2rem;
  color: var(--brand);
}

.stat-item span {
  color: var(--muted);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.contact-layout {
  display: grid;
  gap: 22px;
}

.contact-list,
.footer-contacts {
  display: grid;
  gap: 14px;
}

.contact-list li,
.footer-contacts li {
  display: grid;
  gap: 4px;
}

.contact-list strong,
.footer-contacts strong {
  font-size: 0.9rem;
  color: var(--muted);
}

.form-notice {
  margin-bottom: 16px;
  padding: 14px 18px;
}

.contact-form {
  display: grid;
  gap: 16px;
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form span {
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid rgba(16, 33, 58, 0.16);
  border-radius: 14px;
  padding: 14px 16px;
  font: inherit;
  background: rgba(255, 255, 255, 0.98);
}

.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.site-footer {
  margin: 48px 24px 24px;
  background: linear-gradient(180deg, rgba(11, 42, 85, 0.98), rgba(7, 24, 48, 0.98));
  color: rgba(255, 255, 255, 0.88);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 24px;
  padding: 34px 0;
}

.footer-brand,
.footer-title {
  margin: 0 0 12px;
  font-weight: 700;
}

.footer-note {
  margin: 0;
  max-width: 48ch;
  color: rgba(255, 255, 255, 0.7);
}

@media (max-width: 980px) {
  .header-row {
    grid-template-columns: 1fr auto auto;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 24px;
    right: 24px;
    padding: 18px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.96);
    border: 1px solid var(--line);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .main-nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-grid,
  .footer-grid,
  .card-grid.three-up,
  .card-grid.two-up,
  .stats-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .header-row {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "brand toggle"
      "language language";
    padding: 14px 0;
  }

  .brand-mark {
    grid-area: brand;
  }

  .nav-toggle {
    grid-area: toggle;
    justify-self: end;
  }

  .language-switcher {
    grid-area: language;
    justify-self: start;
    flex-wrap: wrap;
  }

  .hero-copy {
    padding: 34px 24px;
  }

  .hero-section {
    padding-top: 46px;
  }

  .site-footer {
    margin: 36px 14px 14px;
  }
}