:root {
  --bg: #fbfbfc; --panel: #f1f2f5; --text: #15181e; --dim: #5b6372; --accent: #d9581a;
  --ok: #1d8a52; --border: #e2e4ea; --code-bg: #15181e; --code-text: #e6e8ee;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1115; --panel: #171a21; --text: #e6e8ee; --dim: #8b93a5; --accent: #ff7a3d;
    --ok: #5fd38d; --border: #262a33; --code-bg: #171a21; --code-text: #e6e8ee; color-scheme: dark; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 17px/1.65 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
header.site { border-bottom: 1px solid var(--border); }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 14px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; }
.brand img { width: 30px; height: 30px; border-radius: 7px; }
nav a { color: var(--dim); text-decoration: none; margin-left: 18px; font-size: 15px; }
nav a:hover { color: var(--text); }
main { padding-block: 40px 64px; }
h1 { font-size: clamp(30px, 5vw, 44px); line-height: 1.15; margin: 0 0 14px; letter-spacing: -0.02em; }
h2 { font-size: 24px; margin: 44px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 19px; margin: 28px 0 6px; }
p.lead { font-size: 20px; color: var(--dim); margin-top: 0; }
a { color: var(--accent); }
code { font: 0.9em ui-monospace, "SF Mono", Menlo, Consolas, monospace; background: var(--panel); padding: 2px 5px; border-radius: 5px; }
pre { background: var(--code-bg); color: var(--code-text); padding: 16px 18px; border-radius: 10px; overflow-x: auto; font-size: 14.5px; line-height: 1.55; }
pre code { background: none; padding: 0; color: inherit; }
img.demo { width: 100%; max-width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--border); margin: 18px 0 6px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 22px 0; }
.btn { display: inline-block; padding: 11px 18px; border-radius: 9px; text-decoration: none; font-weight: 600; font-size: 16px; }
.btn.primary { background: var(--accent); color: #fff; }
.btn.ghost { border: 1px solid var(--border); color: var(--text); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 18px 0; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; }
.card h3 { margin-top: 0; }
.card p { margin: 6px 0 0; color: var(--dim); font-size: 15.5px; }
.card a { text-decoration: none; }
.note { border-left: 3px solid var(--accent); background: var(--panel); padding: 12px 16px; border-radius: 0 10px 10px 0; margin: 20px 0; }
.ok { color: var(--ok); }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 15.5px; margin: 14px 0; }
th, td { border-bottom: 1px solid var(--border); padding: 9px 10px; text-align: left; vertical-align: top; }
footer.site { border-top: 1px solid var(--border); color: var(--dim); font-size: 14px; }
footer.site .wrap { padding-block: 22px; display: flex; gap: 18px; flex-wrap: wrap; justify-content: space-between; }
footer.site a { color: var(--dim); }