:root {
  --cyan: #03e2fc;
  --deepblue: #0d1333;
  --violet: #7914db;
  --light: #f8fcff;
}
body {
  margin: 0;
  padding: 0;
  background: linear-gradient(135deg, #141d2b 0%, #22304a 100%);
  font-family: 'Roboto', Arial, sans-serif;
  color: var(--light);
}
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 32px 60px;
  background: transparent;
}
.logo {
  font-weight: 900;
  color: var(--cyan);
  letter-spacing: 0.2em;
  font-size: 2.1rem;
  text-shadow: 0 2px 16px rgba(3, 226, 252, 0.3);
}
nav ul {
  display: flex;
  gap: 36px;
  list-style: none;
  margin: 0;
  padding: 0;
}
nav ul li a {
  color: var(--light);
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  padding: 5px 12px;
  border-radius: 18px;
  transition: background .18s, color .18s;
}
nav ul li a:hover {
  background: var(--cyan);
  color: #0d1333;
}
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 550px;
  padding: 80px 60px 60px;
}
.hero-content {
  max-width: 480px;
}
.hero-content h1 {
  font-size: 3.2rem;
  color: var(--cyan);
  margin-bottom: 16px;
}
.hero-content p {
  font-size: 1.33rem;
  margin-bottom: 44px;
}
.hero-btn {
  display: inline-block;
  background: var(--violet);
  color: var(--light);
  font-size: 1.1rem;
  font-weight: 800;
  border: none;
  border-radius: 28px;
  padding: 16px 38px;
  text-decoration: none;
  box-shadow: 0 6px 34px #7914db44;
  transition: background .16s, color .16s;
}
.hero-btn:hover {
  background: var(--cyan);
  color: #0d1333;
}
.hero-bg {
  position: relative;
  min-width: 380px;
  width: 440px;
  min-height: 390px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.brain-img {
  width: 95%;
  filter: drop-shadow(0 0 16px var(--cyan));
}
.servers-img {
  width: 100%;
  margin-top: -36px;
}
.site-footer {
  text-align: center;
  color: #ccc;
  font-size: 1.13rem;
  padding: 44px 0 18px;
  background: transparent;
}
@media (max-width:880px) {
.hero {
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    gap: 50px;
    padding: 50px 18px 28px;
}
.site-header {
    padding: 28px 16px;
}
.hero-bg {
    margin: 0 auto;
    width: 94vw;
    min-width: 180px;
    min-height: 60vw;
    max-width: 430px;
}
}