/* Same tokens as the app (apps/web/src/styles.css): dark departures board, white boarding-pass paper, one alert yellow. */
  :root {
    --mist: #e6e9ed; --page: #ffffff; --ink: #14171c; --slate: #59616c; --line: #d3d8de;
    --hl: #ffc72c; --hl-soft: #ffe9a8; --hl-ink: #14171c;
    --board: #14171c; --board-2: #222730; --board-ink: #f3f5f7; --board-muted: #a3abb5; --board-rule: rgba(243,245,247,.16);
    --paper: #ffffff; --paper-ink: #14171c; --paper-muted: #59616c; --paper-line: #d3d8de;
    --good: #277a5b;
    --shadow: 0 1px 2px rgba(20,23,28,.08), 0 18px 40px -18px rgba(20,23,28,.45);
    --font: "Onest", system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-display: "Roboto Condensed", "Arial Narrow", system-ui, sans-serif;
    color-scheme: light;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --mist: #0b0d10; --page: #1a1d22; --ink: #edf0f3; --slate: #9aa3ae; --line: #2a2f36; --hl-soft: #4d3d10;
      --board: #171a1f; --board-2: #232830;
      --paper: #22262c; --paper-ink: #edf0f3; --paper-muted: #9aa3ae; --paper-line: #343a42;
      --good: #4fb48c;
      color-scheme: dark;
    }
  }
  :root[data-theme="dark"] {
    --mist: #0b0d10; --page: #1a1d22; --ink: #edf0f3; --slate: #9aa3ae; --line: #2a2f36; --hl-soft: #4d3d10;
    --board: #171a1f; --board-2: #232830;
    --paper: #22262c; --paper-ink: #edf0f3; --paper-muted: #9aa3ae; --paper-line: #343a42;
    --good: #4fb48c;
    color-scheme: dark;
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body { margin: 0; background: var(--mist); color: var(--ink); font-family: var(--font); font-size: 17px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
  a { color: inherit; }
  h1, h2, h3 { font-family: var(--font-display); font-weight: 700; line-height: 1.08; margin: 0; letter-spacing: -0.005em; }
  .wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
  .eyebrow { font-family: var(--font-display); font-weight: 600; font-size: .8125rem; letter-spacing: .12em; text-transform: uppercase; color: var(--slate); margin: 0 0 12px; }

  .button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 52px; padding: 0 26px; border-radius: 10px; text-decoration: none; font-family: var(--font-display); font-weight: 700; font-size: 1rem; letter-spacing: .07em; text-transform: uppercase; transition: transform .15s ease, background-color .15s ease; }
  .button:active { transform: scale(.98); }
  .button.primary { background: var(--hl); color: var(--hl-ink); }
  .button.primary:hover { background: #ffd34f; }
  .button.ghost { color: var(--board-ink); box-shadow: inset 0 0 0 1.5px var(--board-rule); }
  .button.ghost:hover { box-shadow: inset 0 0 0 1.5px var(--board-muted); }
  .button:focus-visible, a:focus-visible { outline: 3px solid var(--hl); outline-offset: 3px; }

  /* Board: header + hero */
  .board { background: var(--board); color: var(--board-ink); }
  .top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-top: 18px; padding-bottom: 18px; }
  .top img { height: 30px; width: auto; display: block; }
  .top nav { display: flex; gap: 22px; align-items: center; font-size: .9375rem; }
  .top nav a { text-decoration: none; color: var(--board-muted); }
  .top nav a:hover { color: var(--board-ink); }
  .top nav .open { color: var(--board-ink); font-weight: 600; }

  .hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; padding-top: 56px; padding-bottom: 88px; }
  .hero .eyebrow { color: var(--hl); }
  .hero h1 { font-size: clamp(2.5rem, 5.4vw, 4rem); text-transform: none; }
  .hero h1 em { font-style: normal; color: var(--hl); }
  .hero p.lead { color: var(--board-muted); font-size: 1.1875rem; max-width: 34em; margin: 22px 0 32px; }
  .ctas { display: flex; flex-wrap: wrap; gap: 12px; }
  .fineprint { margin: 18px 0 0; font-size: .875rem; color: var(--board-muted); }

  /* Demo: the add-word flow as a boarding pass */
  .demo { position: relative; }
  .pass { background: var(--paper); color: var(--paper-ink); border-radius: 16px; box-shadow: var(--shadow); overflow: hidden; }
  .pass-head { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--paper-line); font-family: var(--font-display); font-weight: 700; letter-spacing: .08em; font-size: .875rem; }
  .route { display: inline-flex; align-items: center; gap: 8px; }
  .route svg { width: 16px; height: 16px; }
  .pass-head small { font-weight: 600; color: var(--paper-muted); letter-spacing: .1em; font-size: .75rem; }
  .word { margin: 18px 20px 6px; display: flex; align-items: center; gap: 10px; padding: 12px 14px; border-radius: 10px; background: color-mix(in srgb, var(--paper-line) 45%, transparent); font-weight: 600; }
  .word .caret { width: 2px; height: 1.1em; background: var(--ink); animation: blink 1s steps(1) infinite; }
  .word span.hint { margin-left: auto; font-weight: 400; font-size: .8125rem; color: var(--paper-muted); }
  @keyframes blink { 50% { opacity: 0; } }
  .block-title { margin: 14px 20px 6px; font-family: var(--font-display); font-weight: 600; font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--paper-muted); }
  .sugg { list-style: none; margin: 0; padding: 0 12px 6px; }
  .sugg li { display: grid; grid-template-columns: 22px 1fr auto; gap: 12px; align-items: start; padding: 10px 8px; border-radius: 10px; }
  .sugg li.on { background: color-mix(in srgb, var(--hl) 18%, transparent); }
  .check { width: 20px; height: 20px; border-radius: 6px; border: 1.5px solid var(--paper-line); margin-top: 2px; display: grid; place-items: center; }
  .on .check { background: var(--hl); border-color: var(--hl); }
  .on .check::after { content: ""; width: 9px; height: 5px; border-left: 2px solid #14171c; border-bottom: 2px solid #14171c; transform: rotate(-45deg) translate(1px, -1px); }
  .sugg b { font-weight: 600; background: linear-gradient(transparent 62%, var(--hl-soft) 62%); }
  .sugg .tr { display: block; font-size: .875rem; color: var(--paper-muted); }
  .lvl { font-family: var(--font-display); font-weight: 700; font-size: .6875rem; letter-spacing: .08em; padding: 2px 7px; border-radius: 6px; background: color-mix(in srgb, var(--paper-line) 60%, transparent); color: var(--paper-muted); margin-top: 3px; }
  .perforation { position: relative; height: 0; border-top: 2px dashed var(--paper-line); margin: 8px 20px 0; }
  .perforation::before, .perforation::after { content: ""; position: absolute; top: -11px; width: 20px; height: 20px; border-radius: 50%; background: var(--board); }
  .perforation::before { left: -31px; } .perforation::after { right: -31px; }
  .stub { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 16px 20px 18px; }
  .stub .made { font-size: .875rem; color: var(--paper-muted); }
  .stub .made strong { color: var(--paper-ink); }
  .stub .button { min-height: 44px; padding: 0 18px; font-size: .875rem; }

  /* Sections */
  section { padding: 88px 0; }
  .section-head { max-width: 40em; margin-bottom: 44px; }
  .section-head h2 { font-size: clamp(1.875rem, 3.6vw, 2.625rem); }
  .section-head p { color: var(--slate); margin: 14px 0 0; font-size: 1.0625rem; }

  .steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: step; }
  .step { background: var(--page); border-radius: 14px; padding: 26px 24px; box-shadow: 0 1px 2px rgba(20,23,28,.06); }
  .step::before { counter-increment: step; content: "0" counter(step); display: block; font-family: var(--font-display); font-weight: 700; font-size: 2.25rem; line-height: 1; margin-bottom: 18px; color: var(--ink); }
  .step h3 { font-size: 1.3125rem; margin-bottom: 8px; }
  .step p { margin: 0; color: var(--slate); font-size: .9688rem; }

  .compare { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 28px; }
  .time { border-radius: 14px; padding: 22px 24px; background: var(--page); }
  .time .k { font-family: var(--font-display); font-weight: 600; font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--slate); }
  .time .v { font-family: var(--font-display); font-weight: 700; font-size: 2.75rem; line-height: 1.1; margin: 4px 0 6px; }
  .time p { margin: 0; color: var(--slate); font-size: .9375rem; }
  .time.fast { background: var(--board); color: var(--board-ink); }
  .time.fast .k, .time.fast p { color: var(--board-muted); }
  .time.fast .v { color: var(--hl); }

  .anki { background: var(--page); }
  .features { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 48px; }
  .feature { display: grid; grid-template-columns: 40px 1fr; gap: 16px; }
  .feature .ic { width: 40px; height: 40px; border-radius: 10px; background: var(--board); color: var(--hl); display: grid; place-items: center; }
  .feature .ic svg { width: 20px; height: 20px; }
  .feature h3 { font-size: 1.1875rem; margin: 2px 0 6px; }
  .feature p { margin: 0; color: var(--slate); font-size: .9688rem; }

  .choose { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
  .choose blockquote { margin: 0; font-family: var(--font-display); font-weight: 700; font-size: clamp(1.75rem, 3.2vw, 2.375rem); line-height: 1.12; }
  .choose blockquote em { font-style: normal; background: linear-gradient(transparent 60%, var(--hl-soft) 60%); }
  .choose ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 14px; }
  .choose li { padding-left: 30px; position: relative; color: var(--slate); }
  .choose li strong { color: var(--ink); font-weight: 600; }
  .choose li::before { content: ""; position: absolute; left: 4px; top: .55em; width: 12px; height: 6px; border-left: 2px solid var(--good); border-bottom: 2px solid var(--good); transform: rotate(-45deg); }

  .pricing { background: var(--board); color: var(--board-ink); }
  .pricing .section-head p { color: var(--board-muted); }
  .pricing .eyebrow { color: var(--board-muted); }
  .plans { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 820px; }
  .plan { background: var(--board-2); border-radius: 16px; padding: 28px; display: flex; flex-direction: column; }
  .plan.pro { background: var(--paper); color: var(--paper-ink); }
  .plan h3 { font-size: 1.5rem; }
  .price { font-family: var(--font-display); font-weight: 700; font-size: 2.75rem; line-height: 1; margin: 16px 0 4px; }
  .price small { font-size: 1rem; font-weight: 600; color: var(--board-muted); letter-spacing: .02em; }
  .plan.pro .price small, .plan.pro .per { color: var(--paper-muted); }
  .per { font-size: .875rem; color: var(--board-muted); margin: 0 0 20px; }
  .plan ul { list-style: none; margin: 0 0 24px; padding: 0; display: grid; gap: 10px; font-size: .9688rem; }
  .plan li { padding-left: 24px; position: relative; }
  .plan li::before { content: ""; position: absolute; left: 2px; top: .5em; width: 10px; height: 5px; border-left: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(-45deg); opacity: .7; }
  .plan .button { margin-top: auto; }
  .plan.free .button { background: transparent; color: var(--board-ink); box-shadow: inset 0 0 0 1.5px var(--board-rule); }
  .founder { margin-top: 14px; padding: 12px 14px; border-radius: 10px; background: color-mix(in srgb, var(--hl) 22%, transparent); font-size: .875rem; }
  .bonus { margin: 22px 0 0; color: var(--board-muted); font-size: .9375rem; }

  .faq { display: grid; gap: 10px; max-width: 780px; }
  details { background: var(--page); border-radius: 12px; padding: 0 22px; }
  summary { cursor: pointer; list-style: none; padding: 18px 0; font-weight: 600; display: flex; justify-content: space-between; gap: 16px; }
  summary::-webkit-details-marker { display: none; }
  summary::after { content: "+"; font-family: var(--font-display); font-weight: 700; font-size: 1.25rem; line-height: 1; color: var(--slate); }
  details[open] summary::after { content: "–"; }
  details p { margin: 0 0 18px; color: var(--slate); }

  .final { text-align: center; padding: 96px 0; }
  .final h2 { font-size: clamp(2rem, 4vw, 3rem); }
  .final p { color: var(--slate); margin: 14px auto 30px; max-width: 32em; }

  footer { background: var(--board); color: var(--board-muted); font-size: .875rem; }
  footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; padding-top: 28px; padding-bottom: 28px; }
  footer a { color: var(--board-ink); }

  @media (max-width: 860px) {
    .hero, .choose { grid-template-columns: 1fr; gap: 40px; }
    .hero { padding-top: 40px; padding-bottom: 64px; }
    .top img { height: 26px; }
    .steps, .features, .compare, .plans { grid-template-columns: 1fr; }
    section { padding: 64px 0; }
    .top nav a:not(.open) { display: none; }
  }
  @media (max-width: 480px) {
    .wrap { padding-left: 16px; padding-right: 16px; }
    .button { width: 100%; }
    .stub { flex-direction: column; align-items: stretch; }
    .word span.hint { display: none; }
  }
  @media (prefers-reduced-motion: reduce) { .word .caret { animation: none; } html { scroll-behavior: auto; } }

/* Guide pages (search-answer articles) */
.board .top { border-bottom: 1px solid var(--board-rule); }
.article-head { padding-top: 48px; padding-bottom: 56px; max-width: 760px; }
.article-head .eyebrow { color: var(--hl); }
.article-head h1 { font-size: clamp(2.125rem, 4.6vw, 3.25rem); }
.article-head p.lead { color: var(--board-muted); font-size: 1.1875rem; margin: 18px 0 0; }
.article { padding: 56px 0 80px; }
.prose { max-width: 720px; }
.prose h2 { font-size: 1.75rem; margin: 48px 0 12px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.25rem; margin: 28px 0 8px; }
.prose p, .prose li { color: var(--ink); }
.prose p { margin: 0 0 16px; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 22px; }
.prose li { margin-bottom: 8px; }
.prose a { text-decoration-color: var(--hl); text-decoration-thickness: 2px; text-underline-offset: 3px; }
.prose .note { background: var(--page); border-left: 4px solid var(--hl); border-radius: 0 10px 10px 0; padding: 16px 18px; margin: 24px 0; color: var(--slate); }
.prose .note strong { color: var(--ink); }
.table-wrap { overflow-x: auto; margin: 8px 0 24px; }
.prose table { width: 100%; border-collapse: collapse; background: var(--page); border-radius: 12px; overflow: hidden; font-size: .9375rem; min-width: 560px; }
.prose th, .prose td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose th { font-family: var(--font-display); font-weight: 700; letter-spacing: .04em; }
.prose tr:last-child td { border-bottom: 0; }
.cta-box { background: var(--board); color: var(--board-ink); border-radius: 16px; padding: 28px; margin: 40px 0 0; }
.cta-box h2 { margin: 0 0 8px; font-size: 1.5rem; }
.cta-box p { color: var(--board-muted); margin: 0 0 20px; }
.updated { color: var(--slate); font-size: .875rem; }

/* Shared site header and footer, the same as the homepage in the app (apps/web/src/screens/Homepage.tsx). */
.site-top { border-bottom: 1px solid var(--board-2); }
.site-top-row { display: flex; align-items: center; gap: 28px; height: 68px; max-width: 1200px; }
.site-logo img { display: block; height: 26px; width: auto; }
.site-nav { flex: 1; display: flex; gap: 4px; }
.site-nav a, .site-menu nav a { display: flex; align-items: center; height: 40px; padding: 0 12px; color: #c9cfd6; text-decoration: none; font-size: .9375rem; }
.site-nav a:hover { color: var(--board-ink); }
.site-end { display: flex; align-items: center; gap: 16px; margin-left: auto; }
.site-signin { color: var(--board-ink); text-decoration: none; font-size: .9375rem; font-weight: 600; }
.site-create { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 16px; border: 1.5px solid #4a525c; border-radius: 10px; color: var(--board-ink) !important; text-decoration: none; font-family: var(--font-display); font-weight: 700; font-size: .875rem; letter-spacing: .06em; }
.site-menu { display: none; position: relative; }
.site-menu summary { list-style: none; display: flex; align-items: center; justify-content: center; width: 44px; height: 44px; margin-right: -10px; cursor: pointer; }
.site-menu summary::-webkit-details-marker { display: none; }
.site-menu summary span, .site-menu summary span::before, .site-menu summary span::after { display: block; width: 20px; height: 2px; border-radius: 1px; background: var(--board-ink); }
.site-menu summary span { position: relative; }
.site-menu summary span::before, .site-menu summary span::after { content: ""; position: absolute; left: 0; }
.site-menu summary span::before { top: -6px; }
.site-menu summary span::after { top: 6px; }
.site-menu nav { position: absolute; right: -10px; top: 52px; z-index: 10; display: flex; flex-direction: column; min-width: 220px; padding: 8px 12px 14px; border-radius: 14px; background: var(--board); box-shadow: 0 18px 40px rgba(0, 0, 0, .45); }
.site-menu nav .site-create { margin-top: 8px; }
.site-footer { margin-top: 0; padding: 0; background: #0e1014; color: #c9cfd6; border-top: 1px solid var(--board-2); font-size: .875rem; }
.site-footer-row { display: flex; flex-wrap: wrap; gap: 32px; max-width: 1200px; padding-top: 40px; padding-bottom: 28px; }
.site-footer-about { flex: 1 1 300px; display: flex; flex-direction: column; gap: 12px; }
.site-footer-about img { height: 22px; width: auto; align-self: flex-start; }
.site-footer-about p { margin: 0; max-width: 320px; line-height: 1.55; }
.site-footer-cols { flex: 1 1 360px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.site-footer-cols > div { display: flex; flex-direction: column; gap: 8px; }
.site-footer-cols span { font-family: var(--font-display); font-weight: 700; font-size: .75rem; letter-spacing: .12em; color: #a7afb9; }
.site-footer-cols a { display: flex; align-items: center; min-height: 32px; color: #c9cfd6; text-decoration: none; }
.site-footer-cols a:hover { color: var(--board-ink); }
.site-copy { max-width: 1200px; padding-bottom: 28px; font-size: .75rem; color: #8a929c; }
@media (max-width: 899px) {
  .site-nav, .site-end > .site-create { display: none; }
  .site-menu { display: block; }
  .site-end { gap: 8px; }
}
.site-menu, .site-menu summary { margin: 0; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.site-menu summary::after { content: none; display: none; }
.site-menu summary { width: 44px; height: 44px; margin-right: -10px; }