:root {
  --bg: #fbfbfa;
  --fg: #1c1c1e;
  --muted: #5f6368;
  --line: #e4e4e0;
  --card: #ffffff;
  --accent: #0a64d6;
  --accent-fg: #ffffff;
  --sel: #dbe8fb;
  --radius: 12px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161617;
    --fg: #f2f2f0;
    --muted: #a0a3a8;
    --line: #2c2c2e;
    --card: #1f1f21;
    --accent: #5aa2ff;
    --accent-fg: #0b0b0c;
    --sel: #25395a;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; background: var(--card); padding: 8px 12px; border-radius: 8px; z-index: 5; }
.top { display: flex; justify-content: space-between; align-items: center; max-width: 880px; margin: 0 auto; padding: 20px 24px; }
.brand { font-weight: 700; font-size: 20px; color: var(--fg); text-decoration: none; letter-spacing: -0.01em; }
.top nav a { margin-left: 20px; color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--fg); }
main, footer { max-width: 880px; margin: 0 auto; padding: 0 24px; }
section { padding: 48px 0; border-top: 1px solid var(--line); }
.hero { border-top: 0; padding: 56px 0 40px; }
.callouts { margin: 40px 0 0; }
.callouts img { display: block; width: 100%; height: auto; aspect-ratio: 1200 / 630; border-radius: var(--radius); border: 1px solid var(--line); }
@media (max-width: 720px) { .callouts { display: none; } }
h1 { font-size: clamp(34px, 6vw, 54px); line-height: 1.1; letter-spacing: -0.03em; margin: 0 0 20px; }
h2 { font-size: 26px; letter-spacing: -0.02em; margin: 0 0 8px; }
h3 { margin: 0 0 4px; font-size: 17px; }
.lede { font-size: 19px; color: var(--muted); max-width: 560px; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.cta { display: flex; align-items: center; gap: 16px; margin-top: 28px; flex-wrap: wrap; }
.button {
  display: inline-block; background: var(--accent); color: var(--accent-fg); text-decoration: none;
  padding: 12px 24px; border-radius: 10px; font-weight: 600;
}
.button:hover { filter: brightness(1.08); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
kbd { border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; padding: 0 6px; font: 13px ui-monospace, SFMono-Regular, Consolas, monospace; background: var(--card); }

.popup {
  width: min(450px, 100%); margin-top: 20px; background: var(--card); border: 1px solid var(--line);
  border-radius: 14px; box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12); overflow: hidden;
}
.popup-head { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-bottom: 1px solid var(--line); }
.popup-title { font-weight: 600; color: var(--muted); }
.popup-head input {
  flex: 1; min-width: 0; font: inherit; color: var(--fg); background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 6px 10px;
}
#demo-list { list-style: none; margin: 0; padding: 4px; max-height: 330px; overflow: auto; }
#demo-list li {
  display: flex; justify-content: space-between; gap: 12px; padding: 7px 10px; border-radius: 8px;
  cursor: default; white-space: nowrap;
}
#demo-list li .t { overflow: hidden; text-overflow: ellipsis; }
#demo-list li .h { color: var(--muted); font-size: 13px; flex: none; }
#demo-list li[aria-selected="true"] { background: var(--sel); }
#demo-list li.empty { color: var(--muted); }
#demo-list mark { background: none; color: inherit; font-weight: 700; }
.popup-foot { display: flex; justify-content: space-between; padding: 8px 12px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }

.points { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 24px; }
.points p { margin: 0; color: var(--muted); }
.downloads { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 18px 0; }
.card {
  display: flex; flex-direction: column; gap: 4px; padding: 18px; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); text-decoration: none; color: var(--fg);
}
.card span { color: var(--muted); font-size: 14px; }
.card:hover { border-color: var(--accent); }
.card.match { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
details { border-bottom: 1px solid var(--line); padding: 12px 0; }
summary { cursor: pointer; font-weight: 600; }
details p { margin: 8px 0 0; color: var(--muted); }
footer { padding-top: 24px; padding-bottom: 48px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); }