* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  color: #E7ECF4;
  background:
    radial-gradient(circle at top, rgba(52, 95, 170, 0.35), transparent 35%),
    linear-gradient(180deg, #0a1220 0%, #070b13 100%);
  line-height: 1.6;
}

nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 16px 28px;
  background: rgba(9, 17, 30, 0.88);
  border-bottom: 1px solid rgba(126, 161, 255, 0.18);
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

nav a {
  color: #cfe0ff;
  margin-left: 20px;
  text-decoration: none;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: color 0.2s ease, transform 0.2s ease;
}

nav a:hover {
  color: #ffffff;
  transform: translateY(-1px);
}

nav div:first-child {
  color: #ffffff;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.splash {
  position: relative;
  width: 100%;
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(0, 18, 48, 0.7), rgba(5, 30, 62, 0.45)),
    url('splash.jpg') center center / cover no-repeat;
  box-shadow: inset 0 -40px 80px rgba(1, 7, 15, 0.6);
}

.splash::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(74, 137, 255, 0.15), transparent 40%),
    radial-gradient(circle at top right, rgba(130, 202, 255, 0.22), transparent 30%);
  pointer-events: none;
}

.splash-title {
  position: relative;
  z-index: 1;
  font-size: clamp(2.5rem, 4.8vw, 4.5rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #ffffff;
  text-shadow: 0 0 24px rgba(66, 151, 255, 0.8);
}

.page-title {
  text-align: center;
  padding: 54px 20px 20px;
  font-size: clamp(1.9rem, 3.2vw, 2.8rem);
  color: #b8d3ff;
  font-weight: 700;
}

.section {
  max-width: 920px;
  margin: 18px auto;
  padding: 30px 28px;
  color: #dde5f3;
  background: rgba(10, 19, 35, 0.82);
  border: 1px solid rgba(152, 183, 255, 0.16);
  border-radius: 18px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.23);
}

.section h2 {
  margin-top: 0;
  color: #ffffff;
  font-size: 1.5rem;
}

.section ul {
  margin: 0;
  padding-left: 20px;
}

.section li {
  margin: 8px 0;
}

.footer {
  background: linear-gradient(180deg, #08111e, #09172b);
  color: #dce6f9;
  text-align: center;
  padding: 22px 18px;
  margin-top: 40px;
  border-top: 1px solid rgba(146, 176, 255, 0.16);
}

@media (max-width: 700px) {
  nav {
    flex-direction: column;
    align-items: flex-start;
  }

  nav a {
    margin-left: 0;
    margin-right: 16px;
  }

  .section {
    margin: 16px;
    padding: 24px 20px;
  }
}