* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: #18222d;
  background: #f5f7f8;
  line-height: 1.55;
}

a {
  color: inherit;
}

.site-header {
  background: #ffffff;
  border-bottom: 1px solid #dce4ea;
  position: sticky;
  top: 0;
  z-index: 10;
}

.shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  font-weight: 700;
  min-width: 250px;
}

.brand-logo {
  width: 96px;
  height: auto;
  display: block;
  flex: 0 0 auto;
}

.brand span {
  display: block;
  font-size: 18px;
}

.brand small {
  display: block;
  font-weight: 400;
  color: #506071;
  margin-top: 2px;
}

.menu {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
  font-size: 15px;
}

.menu a {
  text-decoration: none;
  color: #2d3a47;
}

.menu a:hover {
  color: #1262a3;
}

.hero {
  background: linear-gradient(90deg, rgba(11, 43, 67, 0.88), rgba(19, 91, 123, 0.72)), url("../style/large-1868496.webp") center/cover;
  color: #ffffff;
  padding: 72px 0 64px;
}

.hero .shell {
  max-width: 1040px;
}

.eyebrow {
  color: #b8e0ff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.06;
  margin: 0;
  max-width: 900px;
}

.lead {
  font-size: clamp(18px, 2.5vw, 23px);
  max-width: 760px;
  margin: 22px 0 0;
  color: #eaf4fb;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 6px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
}

.button.primary {
  background: #1d8ed3;
  color: #ffffff;
}

.button.secondary {
  background: #ffffff;
  color: #13384f;
}

.button.outline {
  border-color: #a8c0ce;
  color: #13384f;
  background: transparent;
}

.section {
  padding: 58px 0;
}

.section.white {
  background: #ffffff;
}

.section h2 {
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.16;
  margin: 0 0 14px;
  color: #102b3c;
}

.section-intro {
  max-width: 780px;
  margin: 0 0 28px;
  color: #526371;
  font-size: 18px;
}

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

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

.card {
  background: #ffffff;
  border: 1px solid #dce4ea;
  border-radius: 8px;
  padding: 22px;
}

.white .card {
  background: #f8fafb;
}

.card h3 {
  margin: 0 0 10px;
  color: #12384f;
  font-size: 20px;
}

.card p {
  margin: 0;
  color: #526371;
}

.card ul {
  margin: 12px 0 0;
  padding-left: 20px;
  color: #405160;
}

.price {
  font-size: 30px;
  font-weight: 800;
  color: #1262a3;
  margin: 8px 0 8px;
}

.note {
  color: #5d6e7c;
  font-size: 15px;
}

.cta-band {
  background: #11384f;
  color: #ffffff;
  padding: 42px 0;
}

.cta-band .shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.cta-band h2 {
  margin: 0;
  font-size: clamp(24px, 4vw, 34px);
}

.cta-band p {
  margin: 8px 0 0;
  color: #d7e6ef;
}

.contact-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.contact-item {
  padding: 16px 18px;
  border: 1px solid #dce4ea;
  border-radius: 8px;
  background: #ffffff;
}

.footer {
  padding: 28px 0;
  color: #5b6974;
  background: #ffffff;
  border-top: 1px solid #dce4ea;
  font-size: 14px;
}

@media (max-width: 820px) {
  .nav,
  .cta-band .shell {
    align-items: flex-start;
    flex-direction: column;
  }

  .menu {
    flex-wrap: wrap;
  }

  .grid,
  .grid.two {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 54px 0;
  }
}