:root {
  color-scheme: dark;
  --ink: #f7f9ff;
  --muted: #b8c2df;
  --panel: rgba(19, 28, 56, 0.8);
  --line: rgba(180, 196, 255, 0.2);
  --blue: #4d7cff;
  --violet: #a65de8;
  --pink: #ee5d9f;
  --orange: #ff8b4d;
  --max: 70rem;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 0%, rgba(77, 124, 255, 0.25), transparent 35rem),
    radial-gradient(circle at 100% 10%, rgba(238, 93, 159, 0.2), transparent 30rem),
    #080d1c;
  line-height: 1.65;
}

a { color: #a9c1ff; }
a:hover { color: #fff; }
a:focus-visible { outline: 3px solid var(--orange); outline-offset: 3px; }

header, main, footer {
  width: min(calc(100% - 2rem), var(--max));
  margin-inline: auto;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.25rem;
}

.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand img { width: 9rem; height: auto; display: block; }

nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 0.4rem 1rem; }
nav a { text-decoration: none; font-weight: 650; }

main { padding-block: 4rem 5rem; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(16rem, 0.8fr);
  align-items: center;
  gap: 3rem;
  min-height: 34rem;
}

.eyebrow {
  margin: 0 0 0.8rem;
  color: #cad6ff;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.025em; }
h1 { max-width: 17ch; margin: 0; font-size: clamp(2.8rem, 7vw, 5.6rem); }
h2 { margin-top: 3rem; font-size: clamp(1.7rem, 3vw, 2.5rem); }
h3 { margin-top: 0; }

.gradient-text {
  background: linear-gradient(100deg, #75a2ff, var(--violet), var(--pink), var(--orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead { max-width: 62ch; color: var(--muted); font-size: 1.15rem; }

.actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.7rem; }
.button {
  display: inline-flex;
  min-height: 2.8rem;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.65rem 1.1rem;
  color: var(--ink);
  background: rgba(255,255,255,0.05);
  text-decoration: none;
  font-weight: 750;
}
.button.primary { border: 0; background: linear-gradient(100deg, #3569ef, #9d54d8, #e55391); }

.panel, .card {
  border: 1px solid var(--line);
  border-radius: 1.25rem;
  background: var(--panel);
  box-shadow: 0 1.4rem 4rem rgba(0, 0, 0, 0.28);
}

.panel { padding: 1.5rem; }
.panel ul { padding-left: 1.2rem; }
.panel li + li { margin-top: 0.7rem; }

.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.card { padding: 1.4rem; }
.card p { color: var(--muted); }

.notice {
  margin-block: 1.5rem;
  border-left: 4px solid var(--orange);
  border-radius: 0.4rem;
  padding: 1rem 1.2rem;
  background: rgba(255, 139, 77, 0.1);
}

.metadata { display: grid; grid-template-columns: max-content 1fr; gap: 0.5rem 1.2rem; }
.metadata dt { font-weight: 800; }
.metadata dd { margin: 0; color: var(--muted); }

pre {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 0.8rem;
  padding: 1rem;
  background: #050916;
  color: #dfe7ff;
}

footer {
  border-top: 1px solid var(--line);
  padding-block: 1.5rem 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 760px) {
  header { align-items: flex-start; flex-direction: column; }
  nav { justify-content: flex-start; }
  main { padding-top: 2rem; }
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .grid { grid-template-columns: 1fr; }
  .metadata { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}