:root {
  --bg: #0b0e1a;
  --bg-2: #131829;
  --bg-3: #1a2036;
  --line: #232a45;
  --text: #e8ecf8;
  --text-2: #a5adc8;
  --text-3: #6f7899;
  --accent: #6366f1;
  --accent-2: #22d3ee;
  --radius: 14px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

/* Scrollbars, themed. The OS default is a bright slab on a dark page, and the
   sidebar's own scroller made it look like a seam down the middle. */
* { scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 8px;
  border: 3px solid transparent;
  background-clip: content-box;
}
::-webkit-scrollbar-thumb:hover { background: #2f3660; background-clip: content-box; }
::-webkit-scrollbar-corner { background: transparent; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font-family: var(--mono); font-size: 0.9em; background: var(--bg-3); padding: 1px 6px; border-radius: 5px; }
img { max-width: 100%; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 18px;
  padding: 12px 26px;
  background: rgba(11, 14, 26, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 9px; color: var(--text); font-weight: 700; letter-spacing: 0.2px; }
.nav nav { margin-left: auto; display: flex; align-items: center; gap: 20px; }
.nav nav a { color: var(--text-2); font-size: 14px; }
.nav nav a:hover { color: var(--text); text-decoration: none; }

/* buttons */
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 10px;
  font-weight: 600; font-size: 15px; border: 1px solid transparent;
}
.btn.small { padding: 7px 14px; font-size: 13.5px; }
.btn.primary { background: linear-gradient(135deg, var(--accent), #8b5cf6); color: #fff; box-shadow: 0 10px 30px -10px var(--accent); }
.btn.primary:hover { text-decoration: none; filter: brightness(1.08); }
.btn.ghost { border-color: var(--line); color: var(--text); }
.btn.ghost:hover { border-color: var(--accent); text-decoration: none; }
.nav .btn { background: var(--accent); color: #fff; }

/* hero */
.hero { max-width: 1000px; margin: 0 auto; padding: 74px 26px 40px; text-align: center; }
.hero-mark { margin-bottom: 18px; }
.hero h1 { margin: 0 0 14px; font-size: clamp(32px, 5.6vw, 56px); line-height: 1.1; letter-spacing: -0.02em; }
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { margin: 0 auto 26px; max-width: 620px; color: var(--text-2); font-size: 17px; }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.version { margin-top: 14px; color: var(--text-3); font-size: 13px; }
.shot {
  margin-top: 42px; border-radius: var(--radius); border: 1px solid var(--line);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.9);
}

/* sections */
.section { max-width: 1060px; margin: 0 auto; padding: 64px 26px; }
.section.alt { background: var(--bg-2); max-width: none; }
.section.alt > * { max-width: 1060px; margin-left: auto; margin-right: auto; }
.section h2 { font-size: clamp(23px, 3.2vw, 32px); margin: 0 0 10px; letter-spacing: -0.01em; }
.sub { color: var(--text-2); margin: 0 0 30px; max-width: 660px; }
.sub.small { font-size: 14px; margin-top: 18px; }

/* feature grid */
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(268px, 1fr)); }
.card {
  padding: 22px; border-radius: var(--radius);
  background: var(--bg-2); border: 1px solid var(--line);
  transition: border-color 0.15s, transform 0.15s;
}
.section.alt .card { background: var(--bg-3); }
.card:hover { border-color: var(--accent); transform: translateY(-2px); }
/* The screenshot sits above the card's text, cropped to a consistent band so
   cards keep a common rhythm whatever shape the shot is. */
.card-shot {
  display: block; margin: -22px -22px 16px; border-bottom: 1px solid var(--line);
  border-radius: var(--radius) var(--radius) 0 0; overflow: hidden;
}
.card-shot img { display: block; width: 100%; height: 148px; object-fit: cover; object-position: top left; }
.card-icon { font-size: 22px; }
.card h3 { margin: 10px 0 8px; font-size: 17px; }
.card h3 a { color: var(--text); }
.card p { margin: 0; color: var(--text-2); font-size: 14.5px; }

/* two columns of ticks */
.two { display: grid; gap: 8px 40px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.ticks { list-style: none; margin: 0; padding: 0; }
.ticks li { padding: 7px 0 7px 26px; position: relative; color: var(--text-2); font-size: 15px; }
.ticks li::before { content: "✓"; position: absolute; left: 0; color: var(--accent-2); font-weight: 700; }

/* downloads */
.downloads { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(232px, 1fr)); }
.dl {
  display: block; padding: 20px; border-radius: var(--radius);
  background: var(--bg-2); border: 1px solid var(--line); color: var(--text);
}
.dl:hover { border-color: var(--accent); text-decoration: none; }
.dl strong { display: block; font-size: 17px; margin-bottom: 4px; }
.dl span { color: var(--text-3); font-size: 13.5px; }
.dl.yours { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }

/* handbook index */
.handbook { display: grid; gap: 26px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.hb-col h4 { margin: 0 0 8px; font-size: 12px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-3); }
.hb-col a { display: block; padding: 3px 0; color: var(--text-2); font-size: 14.5px; }
.hb-col a:hover { color: var(--accent-2); }

/* docs */
.doc { display: flex; gap: 34px; max-width: 1180px; margin: 0 auto; padding: 30px 26px 70px; }
.side {
  width: 248px; flex: none;
  position: sticky; top: 74px; align-self: flex-start;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  /* Reserve the track so the list does not shift when the bar appears, and
     keep the thumb off the text. */
  scrollbar-gutter: stable;
  padding-right: 8px;
  /* Fade the last row out instead of cutting it mid-letter. */
  mask-image: linear-gradient(to bottom, #000 calc(100% - 22px), transparent 100%);
}
.side-search {
  width: 100%; margin-bottom: 16px; padding: 7px 10px;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 8px;
  color: var(--text); font-size: 13.5px;
}
.side-group { margin-bottom: 16px; }
.side-title { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-3); margin-bottom: 5px; }
.side a { display: block; padding: 4px 9px; border-radius: 7px; color: var(--text-2); font-size: 14px; }
.side a:hover { background: var(--bg-2); color: var(--text); text-decoration: none; }
.side a.active { background: var(--bg-3); color: var(--text); font-weight: 600; }
.doc-body { min-width: 0; flex: 1; }
.crumb { color: var(--text-3); font-size: 11.5px; text-transform: uppercase; letter-spacing: 0.07em; margin: 0 0 4px; }
.prose { max-width: 780px; }
.prose h1 { font-size: 34px; margin: 0 0 12px; letter-spacing: -0.02em; }
.prose h2 { font-size: 21px; margin: 34px 0 10px; padding-bottom: 7px; border-bottom: 1px solid var(--line); }
.prose h3 { font-size: 16.5px; margin: 24px 0 8px; }
.prose p, .prose li { color: var(--text-2); }
.prose strong { color: var(--text); }
.prose table { border-collapse: collapse; width: 100%; margin: 16px 0; font-size: 14.5px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 8px 12px; text-align: left; }
.prose th { background: var(--bg-2); color: var(--text); }
.prose blockquote {
  margin: 16px 0; padding: 10px 16px; border-left: 3px solid var(--accent);
  background: var(--bg-2); border-radius: 0 8px 8px 0;
}
.prose blockquote p { margin: 0; }
.prose pre { background: var(--bg-2); border: 1px solid var(--line); padding: 14px 16px; border-radius: 10px; overflow-x: auto; }
.prose pre code { background: none; padding: 0; }
.prose img { border-radius: 10px; border: 1px solid var(--line); margin: 12px 0; }
.prose kbd {
  font-family: var(--mono); font-size: 12px; padding: 2px 6px;
  border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 5px; background: var(--bg-2);
}
.edit { margin-top: 44px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 13.5px; }

/* language bar under the hero — sixteen endonyms, each in its own script */
.lang-bar {
  display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 14px;
  max-width: 760px; margin: 34px auto 0; padding-top: 22px;
  border-top: 1px solid var(--line);
}
.lang-bar a {
  color: var(--text-3); text-decoration: none; font-size: 13.5px;
  unicode-bidi: isolate;
}
.lang-bar a:hover { color: var(--text); }
.lang-bar a[aria-current] { color: var(--accent-2); }

/* language switcher */
.side-lang { margin-bottom: 18px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg-2); }
.side-lang summary {
  cursor: pointer; padding: 7px 10px; font-size: 13px; color: var(--text-2);
  list-style: none; display: flex; align-items: center; justify-content: space-between;
}
.side-lang summary::after { content: '▾'; color: var(--text-3); }
.side-lang[open] summary::after { content: '▴'; }
.side-lang summary::-webkit-details-marker { display: none; }
.side-lang a { display: block; padding: 5px 10px; font-size: 13px; color: var(--text-2); text-decoration: none; }
.side-lang a:hover { color: var(--text); background: var(--bg-3); }
.side-lang a[aria-current] { color: var(--accent-2); }
/* An endonym is written in its own script, so a right-to-left name sits in a
   left-to-right list. Isolate each so it cannot reorder its neighbours. */
.side-lang a { unicode-bidi: isolate; }

/* A right-to-left handbook page mirrors its prose but not its code. */
[dir='rtl'] .prose th, [dir='rtl'] .prose td { text-align: right; }
[dir='rtl'] .prose pre, [dir='rtl'] .prose code { direction: ltr; unicode-bidi: isolate; text-align: left; }
[dir='rtl'] .prose blockquote {
  border-left: 0; border-right: 3px solid var(--accent); border-radius: 8px 0 0 8px;
}

/* footer */
.foot {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  max-width: 1060px; margin: 0 auto; padding: 30px 26px 46px;
  border-top: 1px solid var(--line); color: var(--text-3); font-size: 13.5px;
}

@media (max-width: 820px) {
  .doc { flex-direction: column; }
  .side { position: static; width: auto; max-height: none; }
  .nav nav { gap: 14px; }
}