/* The public placeholder site: the same look as the engine, with no scripts. */
:root {
  color-scheme: light dark;
  --bg: #fafafa;
  --fg: #171717;
  --muted: #6b7280;
  --border: #e5e7eb;
  --card: #f3f4f6;
  --primary: #171717;
  --primary-fg: #fafafa;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0a;
    --fg: #fafafa;
    --muted: #a1a1aa;
    --border: #27272a;
    --card: #18181b;
    --primary: #fafafa;
    --primary-fg: #171717;
  }
}
* { box-sizing: border-box; }
html { scrollbar-gutter: stable; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  max-width: 48rem;
  margin: 0 auto;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; letter-spacing: -0.01em; color: inherit; text-decoration: none; }
.mark {
  width: 32px; height: 32px; border-radius: 8px; background: var(--primary);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'><circle cx='14.5' cy='14.5' r='6' fill='none' stroke='%23fafafa' stroke-width='2.5'/><path d='m19 19 5 5' stroke='%23fafafa' stroke-width='2.5' stroke-linecap='round'/></svg>");
  background-size: cover;
}
@media (prefers-color-scheme: dark) {
  .mark { background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 32 32'><circle cx='14.5' cy='14.5' r='6' fill='none' stroke='%23171717' stroke-width='2.5'/><path d='m19 19 5 5' stroke='%23171717' stroke-width='2.5' stroke-linecap='round'/></svg>"); }
}
nav a { color: var(--muted); text-decoration: none; font-size: 14px; }
nav a:hover, main a:hover { color: var(--fg); }
main { max-width: 48rem; margin: 0 auto; padding: 32px 16px 48px; }
h1 { font-size: clamp(1.6rem, 4vw, 2.1rem); line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 12px; }
h2 { font-size: 1.15rem; margin: 32px 0 8px; letter-spacing: -0.01em; }
p, li { color: var(--muted); }
.lead { font-size: 1.05rem; }
.note { padding: 12px 14px; border: 1px dashed var(--border); border-radius: 12px; }
main a { color: var(--fg); text-decoration: underline; text-decoration-style: dotted; text-underline-offset: 3px; }
.button { display: inline-block; padding: 8px 14px; border-radius: 10px; background: var(--primary); color: var(--primary-fg) !important; text-decoration: none !important; font-weight: 500; font-size: 14px; }
code { background: var(--card); padding: 1px 5px; border-radius: 4px; color: var(--fg); font-size: 0.92em; }
pre { overflow-x: auto; padding: 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--card); color: var(--fg); font-size: 13px; line-height: 1.5; }
ul { padding-left: 20px; }
footer { max-width: 48rem; margin: 0 auto; padding: 20px 16px; border-top: 1px solid var(--border); color: var(--muted); font-size: 13px; }