/* LexiBridge website. Same brand as the extension: ink (#1f2a44) and
   highlighter gold (#f5b83d) on paper. No framework, no build step. */
:root {
  --bg: #fbfaf7;
  --band: #f3f1eb;
  --surface: #ffffff;
  --card: #fffdf8;
  --ink: #1f2a44;
  --ink-2: #4d5366;
  --ink-3: #6b7080;
  --line: rgba(31, 42, 68, 0.09);
  --gold: #f5b83d;
  --marker: rgba(245, 184, 61, 0.55);
  --underline: #c98400;
  --accent: #8a5a00;
  --primary: #1f2a44;
  --on-primary: #ffffff;
  --article: #262a33;
  --shadow: 0 0 0 1px var(--line), 0 30px 60px -20px rgba(24, 34, 61, 0.22);
  --serif: "Iowan Old Style", Georgia, "Times New Roman", serif;
  color-scheme: light dark;
}
/* Glyphs follow the language: of the page (/zh-TW/, /ja/), and of each name in the language menu. */
:root, :lang(zh-CN) {
  --sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Segoe UI",
    "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
:lang(zh-TW) {
  --sans: -apple-system, BlinkMacSystemFont, "PingFang TC", "Segoe UI", "Microsoft JhengHei",
    "Noto Sans CJK TC", sans-serif;
}
:lang(ja) {
  --sans: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Segoe UI",
    "Yu Gothic UI", "Meiryo", "Noto Sans CJK JP", sans-serif;
}
/* Japanese headings break between phrases, not inside words (Chrome 119+). */
:lang(ja) :is(h1, h2, h3) { word-break: auto-phrase; }
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161c2d;
    --band: #11172a;
    --surface: #1c2337;
    --card: #262f48;
    --ink: #ece8df;
    --ink-2: #a7adbd;
    --ink-3: #8a90a3;
    --line: rgba(236, 232, 223, 0.1);
    --marker: rgba(245, 184, 61, 0.4);
    --accent: #f5b83d;
    --primary: #f5b83d;
    --on-primary: #1b2236;
    --article: #ddd9cf;
    --shadow: 0 0 0 1px var(--line), 0 30px 60px -20px rgba(0, 0, 0, 0.6);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
html { scroll-behavior: smooth; }
body { background: var(--bg); color: var(--ink); font: 16px/1.75 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 4px; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 28px; }
.marked { padding: 0 2px; background: linear-gradient(transparent 62%, var(--marker) 62%, var(--marker) 90%, transparent 90%); }

/* Header & footer */
.site-head { display: flex; align-items: center; gap: 28px; height: 72px; }
.logo { display: flex; align-items: center; gap: 10px; font: 600 19px/1 var(--serif); text-decoration: none; }
.logo img { width: 28px; height: 28px; border-radius: 7px; }
.site-head nav { margin-left: auto; display: flex; gap: 26px; font-size: 14.5px; color: var(--ink-2); }
.site-head nav a { text-decoration: none; }
.site-head nav a:hover { color: var(--ink); }
.lang { position: relative; font-size: 14.5px; color: var(--ink-2); }
.lang summary { display: flex; align-items: center; gap: 6px; padding: 6px 4px; white-space: nowrap; list-style: none; cursor: pointer; border-radius: 6px; }
.lang summary::-webkit-details-marker { display: none; }
.lang summary::after { content: ""; width: 5px; height: 5px; margin: -3px 0 0 2px; border: solid currentColor; border-width: 0 1.5px 1.5px 0; transform: rotate(45deg); opacity: 0.7; }
.lang summary:hover, .lang[open] summary { color: var(--ink); }
.lang svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.lang ul { position: absolute; top: calc(100% + 6px); right: 0; z-index: 10; min-width: 140px; margin: 0; padding: 6px; list-style: none; background: var(--surface); border-radius: 10px; box-shadow: var(--shadow); }
.lang ul a { display: block; font-family: var(--sans); padding: 7px 12px; border-radius: 6px; text-decoration: none; color: var(--ink-2); }
.lang ul a:hover { background: var(--band); color: var(--ink); }
.lang ul a[aria-current] { color: var(--ink); font-weight: 600; }
.lang ul a[aria-current]::after { content: "✓"; float: right; margin-left: 12px; color: var(--accent); }
.site-foot { margin-top: 0; padding: 32px 0 40px; border-top: 1px solid var(--line); color: var(--ink-3); font-size: 13.5px; }
.site-foot .wrap { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.site-foot a { text-decoration: none; }
.site-foot a:hover { color: var(--ink); }
.site-foot .logo { margin-right: auto; font-size: 16px; color: var(--ink); }
.site-foot .logo img { width: 22px; height: 22px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 44px;
  padding: 0 20px;
  border-radius: 10px;
  font: 500 15px/1 var(--sans);
  text-decoration: none;
  white-space: nowrap;
}
.btn.primary { background: var(--primary); color: var(--on-primary); }
.btn.primary:hover { filter: brightness(1.18); }
.btn.small { height: 36px; padding: 0 14px; border-radius: 9px; font-size: 14px; }
.btn.secondary { box-shadow: inset 0 0 0 1px var(--line); color: var(--ink); }
.btn.secondary:hover { background: var(--surface); }
.btn.link { padding: 0 6px; color: var(--ink-2); }
.btn.link:hover { color: var(--ink); }
.btn svg { width: 18px; height: 18px; }

/* Hero */
.hero { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; padding: 64px 0 96px; }
.eyebrow { margin: 0 0 18px; color: var(--ink-3); font-size: 14px; letter-spacing: 0.02em; }
h1 { margin: 0 0 20px; font: 700 48px/1.22 var(--sans); letter-spacing: 0.01em; }
.lede { margin: 0 0 32px; max-width: 30em; color: var(--ink-2); font-size: 17px; line-height: 1.85; }
.cta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.cta.center { justify-content: center; }
.fine { margin: 18px 0 0; color: var(--ink-3); font-size: 13.5px; }

/* Demo: an article with the extension running */
.demo { position: relative; }
.window { border-radius: 14px; background: var(--surface); box-shadow: var(--shadow); }
.chrome { display: flex; align-items: center; gap: 7px; height: 38px; padding: 0 14px; border-bottom: 1px solid var(--line); }
.chrome i { width: 10px; height: 10px; border-radius: 50%; background: var(--line); }
.chrome .url { flex: 1; height: 22px; margin-left: 10px; padding: 0 10px; border-radius: 6px; background: var(--band); color: var(--ink-3); font: 11.5px/22px var(--sans); }
.chrome img { width: 18px; height: 18px; border-radius: 4px; }
.article { padding: 26px 30px 34px; color: var(--article); font: 17px/1.8 var(--serif); }
.article .kicker { margin-bottom: 10px; color: var(--ink-3); font: 600 11px/1 var(--sans); letter-spacing: 0.12em; }
.article h3 { margin: 0 0 12px; color: var(--ink); font: 700 23px/1.3 var(--serif); }
.article p { margin: 0 0 12px; }
.w {
  padding: 0;
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  cursor: pointer;
  text-decoration: underline 2px var(--underline);
  text-underline-offset: 3px;
  text-decoration-skip-ink: auto;
}
.w.known { text-decoration-color: transparent; cursor: text; transition: text-decoration-color 0.3s; }
.hint {
  position: absolute;
  top: -14px;
  right: 40px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--primary);
  color: var(--on-primary);
  font: 12.5px/1.4 var(--sans);
  box-shadow: 0 6px 16px rgba(24, 34, 61, 0.2);
}

/* The word card, as in the extension */
.card {
  position: absolute;
  z-index: 5;
  width: 300px;
  border-radius: 14px;
  background: var(--card);
  color: var(--ink);
  box-shadow: 0 0 0 1px var(--line), 0 12px 32px rgba(24, 34, 61, 0.18);
  font: 14px/1.6 var(--sans);
  animation: rise 140ms ease-out;
}
.card .head { padding: 14px 16px 6px; }
.card .word { font: 600 22px/1.25 var(--serif); }
.card .ph { color: var(--ink-3); font-size: 12.5px; }
.card .body { display: flex; gap: 9px; padding: 4px 16px 12px; }
.card .pos { flex: none; height: 20px; padding: 0 6px; border-radius: 5px; background: rgba(245, 184, 61, 0.22); color: var(--accent); font: 600 11.5px/20px ui-monospace, Menlo, monospace; }
.card ol { margin: 0; padding-left: 16px; }
.card ol li::marker { color: var(--ink-3); font-size: 12px; }
.card .foot { display: flex; justify-content: flex-end; padding: 6px 10px; border-top: 1px solid var(--line); }
.card .foot button { height: 30px; padding: 0 10px; border: 0; border-radius: 7px; background: transparent; color: var(--ink); font: 500 13px var(--sans); cursor: pointer; }
.card .foot button:hover { background: var(--line); }
@keyframes rise { from { opacity: 0; transform: translateY(4px); } }
@media (prefers-reduced-motion: reduce) { .card { animation: none; } html { scroll-behavior: auto; } }

/* Sections */
section { padding: 88px 0; }
section.band { background: var(--band); }
h2 { margin: 0 0 12px; font: 700 32px/1.3 var(--sans); }
.sub { margin: 0 0 48px; max-width: 34em; color: var(--ink-2); font-size: 16.5px; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.step .n { margin-bottom: 14px; color: var(--gold); font: italic 600 40px/1 var(--serif); }
.step h3 { margin: 0 0 8px; font: 600 18px/1.4 var(--sans); }
.step p { margin: 0 0 20px; color: var(--ink-2); font-size: 15px; }
.mini { min-height: 132px; padding: 14px 16px; border-radius: 12px; background: var(--surface); box-shadow: 0 0 0 1px var(--line); font-size: 13.5px; }
.mini .opt { display: flex; align-items: center; gap: 10px; padding: 6px 0; }
.mini .opt + .opt { border-top: 1px solid var(--line); }
.mini .r { width: 14px; height: 14px; border-radius: 50%; box-shadow: inset 0 0 0 1.5px var(--ink-3); }
.mini .opt.on .r { box-shadow: inset 0 0 0 4.5px var(--ink); }
.mini .opt span:last-child { margin-left: auto; color: var(--ink-3); font-size: 12px; }
.mini.read { color: var(--article); font: 15px/1.9 var(--serif); }
.mini .u { text-decoration: underline 2px var(--underline); text-underline-offset: 3px; }
.mini .chip { display: inline-flex; gap: 8px; margin: 4px 0 0 5.6em; padding: 3px 4px 3px 10px; border-radius: 14px; background: var(--card); box-shadow: 0 0 0 1px var(--line), 0 4px 14px rgba(24, 34, 61, 0.1); color: var(--ink-3); font: 12.5px/1.6 var(--sans); }
.mini .chip b { padding: 0 6px; color: var(--accent); font-weight: 500; }

.points { display: grid; grid-template-columns: repeat(2, 1fr); gap: 36px 56px; }
.point { display: flex; gap: 16px; }
.point svg { flex: none; width: 22px; height: 22px; margin-top: 4px; fill: none; stroke: var(--ink); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.point h3 { margin: 0 0 4px; font: 600 17px/1.5 var(--sans); }
.point p { margin: 0; color: var(--ink-2); font-size: 15px; }

.story { display: grid; grid-template-columns: 1fr 1.6fr; gap: 56px; }
.story p { margin: 0 0 16px; color: var(--ink-2); }
.story p:last-child { margin-bottom: 0; }

.closing { text-align: center; }
.closing h2 { font-size: 34px; }
.closing .sub { margin: 0 auto 32px; }

/* Text pages: install, privacy */
.prose { max-width: 720px; padding-top: 40px; padding-bottom: 96px; }
.prose h1 { font-size: 36px; margin-bottom: 12px; }
.prose .lede { margin-bottom: 40px; }
.prose h2 { margin: 48px 0 12px; font-size: 22px; }
.prose h3 { margin: 28px 0 8px; font-size: 17px; }
.prose p, .prose li { color: var(--ink-2); }
.prose strong { color: var(--ink); font-weight: 600; }
.prose ol, .prose ul { padding-left: 1.3em; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--ink-3); }
.prose a { color: var(--ink); text-decoration-color: var(--underline); text-underline-offset: 3px; }
.prose code { padding: 1px 6px; border-radius: 5px; background: var(--band); color: var(--ink); font: 0.9em ui-monospace, Menlo, Consolas, monospace; }
.prose table { width: 100%; margin: 16px 0; border-collapse: collapse; font-size: 15px; }
.prose th, .prose td { padding: 10px 12px 10px 0; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.prose th { color: var(--ink); font-weight: 600; }
.prose td { color: var(--ink-2); }
.prose td:first-child { white-space: nowrap; color: var(--ink); }
.prose .updated { margin-top: 48px; color: var(--ink-3); font-size: 13.5px; }

@media (max-width: 860px) {
  .site-head nav { display: none; }
  .site-head { gap: 16px; }
  .site-head .lang { margin-left: auto; }
  .lang summary span { display: none; }  /* the globe alone; its label stays in aria-label */
  .hero { grid-template-columns: minmax(0, 1fr); gap: 40px; padding: 32px 0 64px; }
  h1 { font-size: 36px; }
  .steps, .points, .story { grid-template-columns: minmax(0, 1fr); }
  .story { gap: 8px; }
  section { padding: 64px 0; }
  .card { width: min(280px, calc(100vw - 56px)); }
  .hint { right: 8px; }
  .prose h1 { font-size: 30px; }
}