/*
 * One stylesheet, no JavaScript, no web fonts. The pages exist to be read and
 * to be parsed by crawlers; anything that delays first paint or needs a network
 * round trip works against both.
 */
:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #16161d;
  --muted: #5c5c70;
  --faint: #8a8a9c;
  --line: #e4e4ec;
  --card: #f7f7fa;
  --accent: #4b47d6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0f;
    --fg: #f2f2f7;
    --muted: #a5a5b8;
    --faint: #6f6f85;
    --line: #24243050;
    --card: #15151f;
    --accent: #9d8dff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", "Hiragino Sans", "Noto Sans JP", sans-serif;
  -webkit-text-size-adjust: 100%;
}

.top {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: baseline;
  justify-content: space-between;
  max-width: 44rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 0;
}

.brand {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--fg);
  text-decoration: none;
}

.langs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  font-size: 0.9rem;
}
.langs a { color: var(--faint); text-decoration: none; }
.langs a:hover { color: var(--fg); }
.langs a[aria-current] { color: var(--fg); font-weight: 700; }

main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

h1 {
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

h2 {
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  margin: 2.75rem 0 1rem;
}

.lede {
  font-size: 1.12rem;
  color: var(--muted);
  margin: 0 0 2rem;
}

.facts {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  display: grid;
  gap: 0.5rem;
}
.facts li {
  padding-left: 1.4rem;
  position: relative;
  color: var(--muted);
}
.facts li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--faint);
}

/* The prompts are the substance of the page: numbered, dense, copyable. */
.prompts {
  margin: 0;
  padding-left: 1.4rem;
  display: grid;
  gap: 0.7rem;
}
.prompts li { padding-left: 0.2rem; }

.cta {
  margin: 2.5rem 0 0;
  padding: 1.25rem 1.4rem;
  background: var(--card);
  border-radius: 14px;
  border: 1px solid var(--line);
}
.cta p { margin: 0; }
.cta .fine { margin-top: 0.5rem; }

.fine { font-size: 0.88rem; color: var(--faint); }

.themegrid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.6rem;
}
.themegrid a {
  display: block;
  padding: 0.9rem 1.1rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  text-decoration: none;
  color: var(--fg);
}
.themegrid a:hover { border-color: var(--accent); }
.themegrid strong { display: block; margin-bottom: 0.15rem; }
.themegrid span { color: var(--muted); font-size: 0.94rem; }

.more ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.1rem;
}
.more a { color: var(--accent); }

footer {
  max-width: 44rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.9rem;
}
footer p { margin: 0.3rem 0; }
footer a { color: var(--faint); }

/* Comparison tables. Wide by nature, so they scroll inside their own box
   rather than making the page scroll sideways on a phone. */
.compare {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
  display: block;
  overflow-x: auto;
  white-space: normal;
}
.compare thead th {
  text-align: left;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--faint);
  border-bottom: 1px solid var(--line);
  padding: 0 0.75rem 0.6rem 0;
}
.compare tbody th {
  text-align: left;
  font-weight: 700;
  padding: 0.85rem 0.75rem 0.85rem 0;
  vertical-align: top;
  min-width: 11rem;
}
.compare tbody th .dev {
  display: block;
  font-weight: 400;
  font-size: 0.82rem;
  color: var(--faint);
}
.compare td {
  padding: 0.85rem 0.75rem 0.85rem 0;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  min-width: 10rem;
}
.compare tbody th { border-bottom: 1px solid var(--line); }
.compare .unknown { color: var(--faint); font-style: italic; }
/* Flagged rows are stated in the footnote, never left to colour alone. */
.compare tr.flag th, .compare tr.flag td { background: var(--card); }
.src { text-decoration: none; color: var(--accent); font-size: 0.85em; }
.caveat { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--line); }