:root {
  --bg: #04142b;
  --bg-soft: #0b2448;
  --text: #eff6ff;
  --muted: #b7cae8;
  --brand: #29b7ff;
  --brand-2: #6bffd7;
  --line: rgba(255, 255, 255, 0.18);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Inter", "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: rgba(4, 20, 43, 0.82);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  width: min(1150px, 92%);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand img {
  width: 87px;
  height: 41px;
  object-fit: contain;
}

.brand span {
  font-size: 1.0rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 0;
  list-style: none;
  gap: 18px;
}

nav a {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.3s ease;
}

nav a:hover,
nav a.active {
  color: var(--brand-2);
}

.hero {
  min-height: 64vh;
  display: grid;
  align-items: end;
  background-size: cover;
  background-position: center;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(3, 13, 30, 0.5), rgba(4, 20, 43, 0.88));
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 12% 10%, rgba(41, 183, 255, 0.2), transparent 36%);
  animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.5;
  }
  50% {
    opacity: 0.9;
  }
}

.hero-inner {
  width: min(1150px, 92%);
  margin: 0 auto;
  padding: 96px 0 72px;
  position: relative;
  z-index: 1;
  animation: rise 0.8s ease;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4.8vw, 4rem);
  max-width: 11ch;
  line-height: 1.05;
}

.hero p {
  margin-top: 16px;
  max-width: 58ch;
  color: #d9e8ff;
  line-height: 1.6;
}

.content {
  width: min(980px, 92%);
  margin: 0 auto;
  padding: 60px 0 90px;
}

.content h2 {
  font-size: 1.8rem;
  margin: 0 0 16px;
}

.content p,
.content li {
  color: #d7e6ff;
  line-height: 1.8;
  font-size: 1.02rem;
}

.offer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px;
}

.offer-grid h3 {
  color: var(--brand-2);
  margin-bottom: 14px;
}

.offer-grid ul,
.clients-list {
  margin: 0;
  padding-left: 20px;
}

.clients-list {
  columns: 2;
  gap: 28px;
}

.contact-lines {
  font-size: 1.08rem;
  line-height: 1.9;
  color: #dceaff;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 24px 4%;
  text-align: center;
  color: #adc2e2;
  font-size: 0.9rem;
  background: var(--bg-soft);
}

@media (max-width: 900px) {
  .offer-grid {
    grid-template-columns: 1fr;
  }

  .clients-list {
    columns: 1;
  }

  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
}