:root {
  --bg: #0b1017;
  --bg-alt: #111822;
  --card: #151e2a;
  --line: #243040;
  --text: #e8eef5;
  --muted: #9aabbc;
  --accent: #3d8bfd;
  --accent-2: #22c55e;
  --radius: 14px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.92em; }

.wrap { width: min(1100px, calc(100% - 32px)); margin: 0 auto; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 16px; }

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(11, 16, 23, 0.85);
  border-bottom: 1px solid var(--line);
}
.logo { color: var(--text); font-weight: 700; letter-spacing: 0.02em; text-decoration: none; }
.top nav { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.top nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
.top nav a:hover { color: var(--text); }

.hero { padding: 64px 0 48px; background:
  radial-gradient(800px 400px at 10% -10%, rgba(61, 139, 253, 0.18), transparent 60%),
  radial-gradient(600px 300px at 90% 0%, rgba(34, 197, 94, 0.1), transparent 55%); }
.hero-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 28px; align-items: start; }
.eyebrow { color: var(--accent-2); font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; margin: 0 0 12px; }
.hero h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.15; margin: 0 0 16px; }
.lead { color: var(--muted); font-size: 18px; margin: 0 0 24px; max-width: 38em; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 16px; border-radius: 10px; background: var(--accent); color: #fff;
  font-weight: 600; text-decoration: none; border: 1px solid transparent;
}
.btn:hover { filter: brightness(1.08); text-decoration: none; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--text); }
.btn-sm { padding: 6px 12px; font-size: 13px; }

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  margin-left: 4px;
  padding: 2px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(21, 30, 42, 0.8);
}
.lang-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 5px 9px;
  border-radius: 999px;
  cursor: pointer;
}
.lang-btn:hover { color: var(--text); }
.lang-btn.active {
  background: var(--accent);
  color: #fff;
}

.section { padding: 56px 0; }
.section.alt { background: var(--bg-alt); }
.section h2 { margin: 0 0 20px; font-size: 26px; }

.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
}
.card h3 { margin: 0 0 8px; font-size: 17px; }
.card p { margin: 0; color: var(--muted); }
.panel h2 { font-size: 15px; margin: 0 0 8px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.panel h2 + .list { margin-bottom: 18px; }
.list { margin: 0; padding-left: 18px; color: var(--text); }
.list li { margin: 6px 0; }
.muted { color: var(--muted); }

.steps { margin: 0; padding-left: 22px; color: var(--muted); }
.steps li { margin: 12px 0; }
.steps strong { color: var(--text); }

.code-card { overflow: auto; }
.code-card pre { margin: 0; color: #d7e3f4; font-size: 13px; line-height: 1.45; }

.footer {
  border-top: 1px solid var(--line);
  padding: 20px 0 28px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 860px) {
  .hero-grid, .grid3, .grid2 { grid-template-columns: 1fr; }
  .top .row { flex-direction: column; align-items: flex-start; }
}