@font-face {
  font-family: 'Inter';
  src: url('fonts/inter-latin-wght-normal.woff2') format('woff2');
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: 'Space Grotesk';
  src: url('fonts/space-grotesk-latin-wght-normal.woff2') format('woff2');
  font-weight: 300 700;
  font-display: swap;
}

:root {
  --bg: #0d0d0f;
  --surface: #16161a;
  --border: rgba(255,255,255,0.07);
  --text: #ececf1;
  --muted: #8a8a99;
  --ext: #5eead4;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.65;
}

a { color: inherit; text-decoration: none; }

nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(13,13,15,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 720px; margin: 0 auto; height: 60px; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { font-family: 'Space Grotesk', sans-serif; font-weight: 700; letter-spacing: .02em; }
.brand span { color: var(--muted); font-weight: 500; }
.back { color: var(--muted); font-size: .85rem; }
.back:hover { color: var(--ext); }

main { max-width: 720px; margin: 0 auto; padding: 48px 24px 64px; }

h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.lead { color: var(--muted); font-size: .85rem; }

h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.05rem;
  margin: 32px 0 8px;
  color: var(--ext);
}
p, li { color: #c4c4cf; font-size: .92rem; }
p + p { margin-top: 10px; }
ul { margin: 6px 0 10px 20px; }

footer {
  margin-top: 56px; padding-top: 20px;
  border-top: 1px solid var(--border);
  text-align: center; font-size: .78rem; color: var(--muted);
}
footer a:hover { color: var(--text); text-decoration: underline; }

@media (max-width: 560px) {
  .nav-inner { padding: 0 16px; }
  main { padding: 32px 16px 48px; }
}