:root {
  --bg: #0b0d11;
  --bg-card: #141823;
  --bg-input: #1c2230;
  --fg: #e6e7eb;
  --muted: #8a90a0;
  --accent: #4cc2ff;
  --accent-strong: #2fa4e7;
  --warning: #f5c451;
  --border: #2a2f3a;
  --max: 1080px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  font-size: 15px;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); text-decoration: underline; }

code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
code { background: var(--bg-input); padding: 0.1rem 0.4rem; border-radius: 3px; font-size: 0.9em; }
pre { background: var(--bg-input); padding: 1rem; border-radius: 6px; overflow-x: auto; border: 1px solid var(--border); }
pre code { background: none; padding: 0; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 1.5rem; }

.hero {
  padding: 4rem 0 3rem;
  background: linear-gradient(180deg, rgba(76,194,255,0.08), rgba(11,13,17,0) 75%);
  border-bottom: 1px solid var(--border);
}
.hero h1 { margin: 0 0 0.5rem; font-size: 2.4rem; letter-spacing: -0.02em; }
.brand { color: var(--accent); }
.ver { color: var(--muted); font-size: 1rem; font-weight: 400; margin-left: 0.4rem; }
.tagline { font-size: 1.15rem; color: var(--fg); margin: 0.5rem 0 1.75rem; max-width: 760px; }
.legal { margin-top: 1.25rem; color: var(--muted); font-size: 0.92rem; max-width: 760px; }

.cta { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 0.6rem 1.1rem;
  background: transparent; border: 1px solid var(--border); color: var(--fg);
  border-radius: 6px; font-weight: 500; transition: background 0.15s, border-color 0.15s;
}
.btn:hover { background: var(--bg-card); border-color: var(--accent); text-decoration: none; color: var(--fg); }
.btn-primary { background: var(--accent-strong); border-color: var(--accent-strong); color: white; }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: white; }
.btn-ghost { color: var(--muted); }
.btn-big { font-size: 1.1rem; padding: 0.85rem 1.4rem; }

main { padding: 3rem 0 4rem; }

.grid.features { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin-bottom: 3rem; }
.grid.features article {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 8px; padding: 1.25rem;
}
.grid.features h3 { margin: 0 0 0.5rem; color: var(--accent); font-size: 1.05rem; }
.grid.features p { margin: 0; color: var(--muted); font-size: 0.95rem; }

.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 8px; padding: 1.5rem 1.75rem;
  margin-bottom: 1.5rem;
}
.card h2 { margin-top: 0; color: var(--accent); }
.card.warning { border-color: var(--warning); background: rgba(245,196,81,0.04); }
.card.warning h2 { color: var(--warning); }

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

footer { border-top: 1px solid var(--border); padding: 1.5rem 0; margin-top: 2rem; }
footer p { margin: 0; }

@media (max-width: 540px) {
  .hero { padding: 2.5rem 0 2rem; }
  .hero h1 { font-size: 1.9rem; }
  .tagline { font-size: 1rem; }
}