:root {
  --bg: #05070d;
  --panel: #0b1020;
  --text: #f5f7ff;
  --muted: #9aa6c3;
  --cyan: #24d8ff;
  --blue: #3478ff;
  --violet: #8b4dff;
  --border: rgba(255,255,255,.10);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at 15% 0%, rgba(36,216,255,.12), transparent 35%),
    radial-gradient(circle at 90% 10%, rgba(139,77,255,.13), transparent 35%),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a {
  color: var(--cyan);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(18px);
  background: rgba(5,7,13,.78);
  border-bottom: 1px solid var(--border);
  z-index: 20;
}

.nav {
  max-width: 1100px;
  margin: auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-weight: 800;
  letter-spacing: .22em;
  font-size: 18px;
}

.brand span {
  background: linear-gradient(90deg,var(--cyan),var(--blue),var(--violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.navlinks {
  display: flex;
  gap: 18px;
  font-size: 14px;
}

.hero {
  max-width: 1100px;
  margin: auto;
  padding: 110px 24px 80px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(42px,7vw,82px);
  line-height: 1.02;
  margin: 0 0 24px;
  letter-spacing: -.03em;
}

.gradient {
  background: linear-gradient(90deg,var(--cyan),var(--blue),var(--violet));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  color: var(--muted);
  max-width: 760px;
  margin: 0 auto 34px;
  font-size: 19px;
}

.badge {
  display: inline-block;
  padding: 9px 15px;
  border: 1px solid rgba(36,216,255,.3);
  border-radius: 999px;
  color: var(--cyan);
  margin-bottom: 24px;
  background: rgba(36,216,255,.06);
}

.cards {
  max-width: 1100px;
  margin: 0 auto 90px;
  padding: 0 24px;
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(220px,1fr));
  gap: 18px;
}

.card {
  background: linear-gradient(145deg,rgba(255,255,255,.055),rgba(255,255,255,.02));
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 26px;
}

.card h3 {
  margin-top: 0;
}

.card p {
  color: var(--muted);
}

.content {
  max-width: 900px;
  margin: auto;
  padding: 70px 24px 100px;
}

.content h1 {
  font-size: 42px;
}

.content h2 {
  margin-top: 38px;
  color: #dfe6ff;
}

.content p,
.content li {
  color: var(--muted);
}

.notice {
  border-left: 3px solid var(--cyan);
  padding: 15px 18px;
  background: rgba(36,216,255,.06);
  border-radius: 10px;
}

footer {
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  padding: 28px 20px 45px;
  font-size: 14px;
}

@media(max-width:700px) {
  .navlinks {
    display: none;
  }
}