:root {
  --bg: #f5f8ff;
  --text: #1b2742;
  --muted: #43506f;
  --card: #ffffff;
  --primary: #2457d6;
  --primary-dark: #1a3fa1;
  --border: #dbe3f7;
}

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

body {
  margin: 0;
  font-family: "Inter", Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #eef3ff 0%, #f7f9ff 100%);
  line-height: 1.75;
}

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background-color: rgba(255, 255, 255, 0.88);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  min-height: 74px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.brand {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--primary-dark);
}

.main-nav {
  display: flex;
  gap: 22px;
}

.main-nav a {
  color: var(--text);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s ease;
}

.main-nav a:hover {
  color: var(--primary);
}

.block {
  padding: 58px 0;
}

.hero {
  padding: 86px 0 62px;
}

.hero h1 {
  margin: 0 0 20px;
  font-size: clamp(2rem, 4vw, 3.1rem);
  line-height: 1.18;
  color: #102144;
}

.hero p {
  margin: 0;
  max-width: 880px;
  font-size: 1.07rem;
  color: var(--muted);
}

.block .container {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 34px 34px 28px;
  box-shadow: 0 10px 30px rgba(31, 54, 114, 0.08);
}

.block-alt .container {
  background: #f8faff;
}

.block h2 {
  margin: 0 0 14px;
  font-size: clamp(1.35rem, 2.3vw, 2rem);
  line-height: 1.3;
  color: #14295c;
}

.block p {
  margin: 0 0 14px;
  color: var(--muted);
}

.contact-list {
  margin: 12px 0 0;
  padding-left: 20px;
}

.contact-list li {
  margin-bottom: 7px;
  color: var(--muted);
}

.contact-list a {
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 600;
}

.contact-list a:hover {
  text-decoration: underline;
}

.block-final .container {
  background: linear-gradient(145deg, #1e4cc0 0%, #2e64e3 100%);
  border: none;
}

.block-final h2,
.block-final p {
  color: #ffffff;
}

.site-footer {
  padding: 24px 0 34px;
  text-align: center;
}

.site-footer p {
  margin: 0;
  color: #56648a;
  font-size: 0.95rem;
}

@media (max-width: 800px) {
  .header-inner {
    flex-direction: column;
    justify-content: center;
    padding: 12px 0;
  }

  .main-nav {
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 14px;
  }

  .block .container {
    padding: 24px 20px 18px;
  }

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