* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #09171f;
  color: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.9;
}

a {
  color: #fff;
  text-decoration: none;
}

header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 34px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo,
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: .03em;
  text-shadow: 0 0 18px rgba(255,255,255,.38);
}

.logo img,
.brand img {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow:
    0 0 18px rgba(20,210,146,.55),
    0 0 34px rgba(20,210,146,.22);
}

nav {
  display: flex;
  gap: 28px;
}

nav a {
  font-size: 14px;
  font-weight: 600;
  opacity: .9;
}

nav a:hover {
  color: #14d292;
  text-shadow: 0 0 14px rgba(20,210,146,.65);
}

main,
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

.hero {
  text-align: center;
  padding: 88px 20px 62px;
}

.accent-line {
  width: 72px;
  height: 2px;
  margin: 0 auto 28px;
  background: #14d292;
  box-shadow: 0 0 18px rgba(20,210,146,.9);
}

h1,
.hero h1 {
  font-size: 42px;
  margin-bottom: 20px;
  letter-spacing: .04em;
  text-shadow: 0 0 22px rgba(255,255,255,.35);
}

.hero p,
.description,
.lead {
  color: rgba(255,255,255,.78);
  font-size: 16px;
  max-width: 720px;
  margin: 0 auto;
}

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

.card,
.section {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  padding: 32px;
  margin-bottom: 28px;
  box-shadow: 0 0 28px rgba(255,255,255,.04);
}

.card {
  display: block;
  transition: .25s;
}

.card:hover {
  transform: translateY(-3px);
  border-color: rgba(20,210,146,.75);
  box-shadow: 0 0 30px rgba(20,210,146,.18);
}

.card h2,
.section h2 {
  color: #55ff9f;
  font-size: 24px;
  margin-bottom: 18px;
}

.card p,
.section p {
  color: rgba(255,255,255,.88);
  font-size: 15px;
  margin-bottom: 14px;
}

ul {
  padding-left: 24px;
  margin-bottom: 20px;
}

li {
  margin-bottom: 10px;
  color: rgba(255,255,255,.88);
}

footer {
  max-width: 900px;
  margin: 40px auto 0;
  padding: 32px 24px;
  text-align: center;
  color: rgba(255,255,255,.55);
  font-size: 13px;
  border-top: 1px solid rgba(255,255,255,.12);
}

@media (max-width: 720px) {
  header {
    display: block;
  }

  .logo,
  .brand {
    font-size: 26px;
  }

  nav {
    margin-top: 20px;
    flex-wrap: wrap;
    gap: 16px;
  }

  h1,
  .hero h1 {
    font-size: 30px;
  }

  .hero {
    padding: 56px 10px 42px;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .card,
  .section {
    padding: 24px;
  }
}