* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: #172033;
  font-family: Inter, Arial, Helvetica, sans-serif;
  line-height: 1.6;
  background: #f5f7fb;
}

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

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 18px min(8%, 96px);
  color: #fff;
  border-bottom: 1px solid rgba(212, 175, 55, 0.22);
  background: rgba(7, 18, 35, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.nav nav {
  display: flex;
  gap: 22px;
  font-size: 14px;
  color: #d8e2f0;
}

.hero {
  min-height: 74vh;
  display: grid;
  place-content: center;
  padding: 112px min(8%, 96px);
  text-align: center;
  color: #fff;
  background:
    radial-gradient(circle at 20% 20%, rgba(212, 175, 55, 0.2), transparent 28%),
    radial-gradient(circle at 80% 10%, rgba(46, 117, 182, 0.24), transparent 30%),
    linear-gradient(135deg, #071223 0%, #0d213d 58%, #06101f 100%);
}

.hero-inner {
  max-width: 920px;
  margin: 0 auto;
}

.hero h1 {
  margin: 10px 0 22px;
  font-size: clamp(44px, 7vw, 82px);
  line-height: 0.95;
  letter-spacing: -0.06em;
  text-transform: uppercase;
}

.hero p {
  max-width: 780px;
  margin: 0 auto;
  color: #d9e4f2;
  font-size: 20px;
}

.eyebrow {
  margin: 0 0 12px;
  color: #d4af37;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.dark-text {
  color: #9a7620;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 150px;
  border: 1px solid #d4af37;
  border-radius: 999px;
  padding: 12px 22px;
  color: #071223;
  font-weight: 700;
  background: #d4af37;
}

.button.secondary {
  color: #fff;
  background: transparent;
}

.section {
  padding: 86px min(8%, 96px);
  text-align: center;
}

.section h2 {
  max-width: 900px;
  margin: 0 auto 28px;
  color: #0b1830;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.lead {
  max-width: 860px;
  margin: 0 auto 42px;
  color: #526071;
  font-size: 18px;
}

.stats,
.grid,
.systems {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  max-width: 1120px;
  margin-right: auto;
  margin-left: auto;
}

.stats {
  margin-bottom: 24px;
}

article {
  padding: 32px;
  border: 1px solid rgba(20, 36, 62, 0.08);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
}

article strong {
  display: block;
  margin-bottom: 12px;
  color: #9a7620;
  font-size: 48px;
  line-height: 1;
}

article h3 {
  margin: 0 0 12px;
  font-size: 20px;
}

article p {
  margin: 0;
  color: #617082;
}

.dark {
  color: #fff;
  background:
    radial-gradient(circle at top left, rgba(212, 175, 55, 0.14), transparent 32%),
    #071223;
}

.dark h2 {
  color: #fff;
}

.systems {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.systems article {
  color: #fff;
  border-color: rgba(212, 175, 55, 0.18);
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.18);
}

.systems span {
  display: inline-block;
  margin-bottom: 16px;
  color: #d4af37;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.systems p {
  color: #bdc8d8;
}

.contact {
  background: linear-gradient(180deg, #fff 0%, #eef3f9 100%);
}

form {
  max-width: 560px;
  display: grid;
  gap: 14px;
  margin: 34px auto;
}

input,
textarea {
  width: 100%;
  border: 1px solid #ccd6e2;
  border-radius: 12px;
  padding: 14px 16px;
  font: inherit;
  background: #fff;
}

textarea {
  min-height: 130px;
  resize: vertical;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 14px 18px;
  color: #071223;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  background: #d4af37;
}

small {
  display: block;
  max-width: 760px;
  margin: 0 auto;
  color: #7b8794;
}

@media (max-width: 780px) {
  .nav,
  .nav nav {
    flex-direction: column;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

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