:root {
  --bg: #fbfaf7; --fg: #1d2330; --muted: #5d6676; --accent: #1f6f5c; --accent-fg: #fff;
  --card: #fff; --border: #e3e0d8; --code-bg: #f3f1ea;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14181f; --fg: #e8eaee; --muted: #9aa3b2; --accent: #4cc2a1; --accent-fg: #0b1512;
    --card: #1b2029; --border: #2a303c; --code-bg: #10141a;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", sans-serif; }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 16px; }
header.top { border-bottom: 1px solid var(--border); }
header.top .wrap { display: flex; justify-content: space-between; align-items: center; padding-top: 14px; padding-bottom: 14px; }
header.top a { color: var(--fg); text-decoration: none; margin-left: 16px; }
header.top .brand { font-weight: 700; margin-left: 0; }
.hero { padding: 56px 0 24px; }
.hero h1 { font-size: clamp(2rem, 6vw, 3rem); line-height: 1.15; margin: 0 0 12px; }
.hero p.lead { font-size: 1.2rem; color: var(--muted); margin: 0 0 24px; }
.btn { display: inline-block; padding: 10px 18px; border-radius: 8px; text-decoration: none;
  background: var(--accent); color: var(--accent-fg); font-weight: 600; margin: 0 8px 8px 0; }
.btn.alt { background: transparent; color: var(--fg); border: 1px solid var(--border); }
h2 { margin-top: 48px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; }
.card h3 { margin-top: 0; }
pre { background: var(--code-bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 14px; overflow-x: auto; font: 14px/1.5 ui-monospace, Consolas, monospace; }
code { font-family: ui-monospace, Consolas, monospace; }
img.demo { max-width: 100%; border-radius: 10px; border: 1px solid var(--border); }
table { border-collapse: collapse; width: 100%; }
th, td { border-bottom: 1px solid var(--border); padding: 8px 10px; text-align: left; }
footer { margin-top: 64px; border-top: 1px solid var(--border); padding: 24px 0 40px; color: var(--muted); font-size: 0.95rem; }
footer a { color: var(--muted); }
h3 { margin-top: 28px; }

/* gallery */
.sample { margin: 56px 0; }
.two { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; align-items: start; }
.two h3 { margin: 0 0 8px; font-size: 1rem; color: var(--muted); font-weight: 600; }
.two pre { margin: 0 0 8px; font-size: 13px; }
.note { color: var(--muted); font-size: 0.9rem; margin: 6px 0 0; }
pre.out { background: #0e1116; color: #d6e2ee; border-color: #2a303c; }
details { margin: 8px 0; }
details > summary { cursor: pointer; color: var(--accent); font-weight: 600; margin: 6px 0; }
details.cs { margin-top: 16px; }
details pre { max-height: 520px; overflow: auto; }