:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --card: #243044;
  --text: #e8eef6;
  --muted: #8b9cb3;
  --accent: #3d8bfd;
  --accent-dim: #2563eb;
  --ok: #34d399;
  --border: rgba(255, 255, 255, 0.08);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { width: 100%; max-width: 1040px; margin: 0 auto; padding: 0 1.25rem; }
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(15, 20, 25, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .inner {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 4rem; gap: 1rem;
}
.logo { font-weight: 700; font-size: 1.1rem; color: var(--text); display: flex; align-items: center; gap: 0.5rem; }
.logo span { color: var(--accent); }
.nav-links { display: flex; flex-wrap: wrap; gap: 1rem; font-size: 0.9rem; }
.nav-links a { color: var(--muted); }
.nav-links a:hover { color: var(--text); }
.hero {
  padding: 3.5rem 0 4rem; text-align: center;
  background: radial-gradient(ellipse 80% 60% at 50% -20%, rgba(61, 139, 253, 0.22), transparent);
}
.hero h1 {
  font-size: clamp(1.75rem, 5vw, 2.5rem); font-weight: 800; line-height: 1.15;
  margin: 0 0 1rem; letter-spacing: -0.02em;
}
.hero p.lead { font-size: 1.125rem; color: var(--muted); max-width: 36rem; margin: 0 auto 2rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.75rem 1.5rem; border-radius: 10px; font-weight: 600; font-size: 0.95rem;
  border: none; cursor: pointer; transition: transform 0.15s, background 0.15s;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dim); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--muted); text-decoration: none; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; justify-content: center; }
section { padding: 3rem 0; border-top: 1px solid var(--border); }
section h2 { font-size: 1.5rem; margin: 0 0 1.5rem; font-weight: 700; }
.grid-3 { display: grid; gap: 1.25rem; }
@media (min-width: 640px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 14px; padding: 1.35rem;
}
.card h3 { margin: 0 0 0.5rem; font-size: 1.05rem; color: var(--ok); }
.card p { margin: 0; font-size: 0.95rem; color: var(--muted); }
.api-box {
  background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
  padding: 1rem 1.25rem; font-family: ui-monospace, monospace; font-size: 0.8rem;
  word-break: break-all; color: var(--muted); margin-top: 1rem;
}
.api-box strong { color: var(--text); }
.badge {
  display: inline-block; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.06em;
  padding: 0.2rem 0.5rem; border-radius: 6px; background: rgba(52, 211, 153, 0.15);
  color: var(--ok); margin-bottom: 0.75rem;
}
.site-footer { padding: 2rem 0 3rem; border-top: 1px solid var(--border); text-align: center; font-size: 0.85rem; color: var(--muted); }