:root {
  color-scheme: dark;
  --bg: #0b1017;
  --panel: #121c27;
  --text: #edf4f7;
  --muted: #aabac5;
  --accent: #63e6be;
  --border: #263744;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(ellipse at 85% 0%, #15372f 0, transparent 35%),
    var(--bg);
  color: var(--text);
  font: 16px/1.65 system-ui, -apple-system, "Segoe UI", sans-serif;
}

header,
main,
footer {
  width: min(1050px, calc(100% - 36px));
  margin-inline: auto;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--border);
}

.logo {
  color: var(--accent);
  font-size: 1.2rem;
  font-weight: 800;
  text-decoration: none;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
}

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

nav a:hover,
nav a[aria-current="page"] {
  color: var(--accent);
}

main {
  padding: 48px 0 64px;
}

.hero,
.card,
.panel {
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(18, 28, 39, .92);
}

.hero {
  padding: clamp(28px, 6vw, 64px);
  background:
    linear-gradient(120deg, rgba(99, 230, 190, .12), transparent 55%),
    var(--panel);
}

.tag {
  color: var(--accent);
  font: 700 .82rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
}

h1 {
  margin: 12px 0;
  max-width: 760px;
  font-size: clamp(2.2rem, 7vw, 4.6rem);
  line-height: 1.08;
}

h2 {
  margin-top: 0;
  line-height: 1.25;
}

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

.hero p {
  max-width: 680px;
  font-size: 1.1rem;
}

.button {
  display: inline-block;
  margin-top: 12px;
  padding: 10px 16px;
  border-radius: 9px;
  background: var(--accent);
  color: #07130f;
  font-weight: 750;
  text-decoration: none;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 22px;
}

.card,
.panel {
  padding: 22px;
}

.card {
  text-decoration: none;
  transition: transform .2s, border-color .2s;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.card p {
  margin-bottom: 0;
}

.panel {
  margin-top: 16px;
}

code {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

footer {
  padding: 22px 0 30px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .9rem;
}

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

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

  main {
    padding-top: 28px;
  }
}