/* planoaviation.com: one stylesheet for every page.
   Colours and type follow the book "Nothing on a Plane Is an Accident" (book/book.css):
   paper, ink, gold, night; Montserrat for display, Merriweather (renamed "Plano Serif", see assets/fonts) for text. */

@font-face { font-family: "Plano Serif"; src: url("/assets/fonts/plano-serif-400.woff") format("woff"); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: "Plano Serif"; src: url("/assets/fonts/plano-serif-700.woff") format("woff"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Plano Serif"; src: url("/assets/fonts/plano-serif-800.woff") format("woff"); font-weight: 800; font-style: normal; font-display: swap; }
@font-face { font-family: "Montserrat"; src: url("/assets/fonts/montserrat-500.woff") format("woff"); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: "Montserrat"; src: url("/assets/fonts/montserrat-600.woff") format("woff"); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: "Montserrat"; src: url("/assets/fonts/montserrat-700.woff") format("woff"); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: "Montserrat"; src: url("/assets/fonts/montserrat-800.woff") format("woff"); font-weight: 800; font-style: normal; font-display: swap; }

:root {
  --paper: #f7f5ef; --paper-2: #eeeae0; --card: #ffffff; --ink: #16181b; --soft: #565b63; --line: #d9d5ca;
  --gold: #f2b705; --gold-hover: #ffc928; --gold-soft: #fff3c4;
  --red: #c8372a; --green: #17804a; --green-mark: #1f9d5a; --green-soft: #e3f4ea;
  --night: #0b0d10; --night-2: #14171c; --night-line: #2a2f36; --night-text: #e4e7eb; --night-soft: #a3aab4;
  --serif: "Plano Serif", Georgia, "Times New Roman", serif;
  --sans: "Montserrat", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --wrap: 1120px; --gutter: 16px; --radius: 10px;
  --focus: var(--ink);
  color-scheme: light;
}
@media (min-width: 700px) { :root { --gutter: 28px; } }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.68 var(--serif); text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
p { margin: 0 0 14px; }
b, strong { font-weight: 800; }
h1, h2, h3 { text-wrap: balance; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 4px; }
.dark, .site-head, .site-foot, .hero { --focus: var(--gold); }
[hidden] { display: none !important; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -9999px; top: 0; }
.skip:focus { left: 16px; top: 12px; z-index: 50; background: var(--gold); color: var(--ink); padding: 10px 14px; border-radius: 6px; font: 800 14px/1 var(--sans); text-decoration: none; }
.sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* ---- header and footer ---------------------------------------------------------------------- */
.site-head { background: var(--night); color: #fff; border-bottom: 1px solid var(--night-line); position: sticky; top: 0; z-index: 40; }
html { scroll-padding-top: 78px; } /* in-page links land below the sticky header */
.site-head .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 66px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; font: 800 14px/1 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: #fff; white-space: nowrap; }
.brand svg { width: 30px; height: 30px; flex: none; }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a { font: 700 12.5px/1 var(--sans); letter-spacing: 0.12em; text-transform: uppercase; color: var(--night-soft); text-decoration: none; padding: 8px 0; }
.nav a:hover { color: #fff; }
.nav a.btn { color: var(--ink); padding: 8px 14px; }
@media (max-width: 860px) { .nav .nl { display: none; } }

.site-foot { background: var(--night); color: var(--night-soft); padding: 52px 0 44px; font: 400 15px/1.6 var(--serif); }
.site-foot .top-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 22px; padding-bottom: 26px; border-bottom: 1px solid var(--night-line); }
.foot-links { display: flex; flex-wrap: wrap; gap: 10px 26px; margin: 0; padding: 0; list-style: none; }
.foot-links a { font: 700 12.5px/1 var(--sans); letter-spacing: 0.12em; text-transform: uppercase; color: #fff; text-decoration: none; padding: 6px 0; display: inline-block; }
.foot-links a:hover { color: var(--gold); }
.site-foot .tagline { margin: 22px 0 6px; color: var(--night-text); }
.site-foot .legal { font: 500 13px/1.65 var(--sans); color: #8b929c; margin: 10px 0 0; max-width: 62em; }
.site-foot .legal a { color: #c9ced6; }

/* ---- buttons -------------------------------------------------------------------------------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 50px; padding: 12px 24px; border-radius: 8px; border: 2px solid transparent; font: 800 15px/1.2 var(--sans); letter-spacing: 0.04em; text-decoration: none; text-align: center; cursor: pointer; transition: transform 0.12s ease, background-color 0.12s ease, border-color 0.12s ease; }
.btn-buy { background: var(--gold); border-color: var(--gold); color: var(--ink); }
a.btn-buy:hover { background: var(--gold-hover); border-color: var(--gold-hover); transform: translateY(-1px); }
.btn-buy.is-soon { background: transparent; color: inherit; border: 2px dashed currentColor; cursor: default; }
.btn-ghost { color: #fff; border-color: #444b55; background: transparent; }
.btn-ghost:hover { border-color: #fff; }
.on-light .btn-ghost, .btn-ghost.on-light { color: var(--ink); border-color: var(--ink); }
.on-light .btn-ghost:hover, .btn-ghost.on-light:hover { background: var(--ink); color: #fff; }
.btn-sm { min-height: 38px; padding: 8px 14px; font-size: 12.5px; letter-spacing: 0.1em; text-transform: uppercase; white-space: nowrap; }
@media (max-width: 420px) {
  .site-head .brand { font-size: 12.5px; letter-spacing: 0.1em; gap: 9px; }
  .site-head .brand svg { width: 26px; height: 26px; }
  .nav .btn-sm { padding: 8px 10px; letter-spacing: 0.06em; font-size: 12px; }
}
.arrow { font-family: var(--sans); }
/* Gumroad's script restyles links with class "gumroad-button" and adds its logo inside them.
   These rules (more specific than Gumroad's) keep the book's own button; "by Gumroad" is said in words next to it. */
a.btn.btn-buy.gumroad-button { background: var(--gold); color: var(--ink); border: 2px solid var(--gold); border-radius: 8px; font: 800 15px/1.2 var(--sans); letter-spacing: 0.04em; padding: 12px 24px; min-height: 50px; box-shadow: none; transform: none; gap: 10px; }
a.btn.btn-buy.gumroad-button:hover { background: var(--gold-hover); border-color: var(--gold-hover); color: var(--ink); box-shadow: none; transform: translateY(-1px); }
a.btn.btn-buy.gumroad-button:active { transform: none; box-shadow: none; }
a.btn.btn-buy.gumroad-button .logo-full { display: none !important; }

/* ---- the book's own furniture: stamps and boxes ---------------------------------------------- */
.stamp { display: inline-block; font: 800 12px/1 var(--sans); letter-spacing: 0.16em; text-transform: uppercase; padding: 8px 11px 7px; border: 2px solid currentColor; border-radius: 3px; transform: rotate(-2deg); }
.stamp.gold { background: var(--gold); border-color: var(--gold); color: var(--ink); }
.stamp.red { background: var(--red); border-color: var(--red); color: #fff; }
.stamp.green { background: var(--green); border-color: var(--green); color: #fff; }
.box { border-radius: var(--radius); padding: 17px 20px 16px; margin: 20px 0; }
.box p { margin: 0; }
.box p + p { margin-top: 8px; }
.box .k { display: block; font: 800 12px/1 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; margin-bottom: 9px; }
.box.clue { background: var(--gold-soft); border-left: 5px solid var(--gold); }
.box.tip { background: #e8e5dc; border-left: 5px solid var(--ink); }
.box.rule { background: var(--night); color: #fff; text-align: center; padding: 30px 22px 28px; }
.box.rule .k { color: var(--gold); }
.box.rule .big { display: block; font: 800 clamp(26px, 3.8vw, 40px)/1.08 var(--sans); margin: 8px 0 12px; }
.box.rule p { color: #d7dbe0; max-width: 34em; margin: 0 auto; }

/* ---- sections ------------------------------------------------------------------------------- */
.sec { padding: 84px 0; }
.sec-alt { background: var(--paper-2); }
.dark { background: var(--night); color: #fff; }
@media (max-width: 700px) { .sec { padding: 58px 0; } }
.sec h2, .doc h1 { font: 800 clamp(30px, 4.4vw, 48px)/1.06 var(--sans); letter-spacing: -0.012em; margin: 18px 0 18px; }
.intro { font-size: 18.5px; line-height: 1.66; max-width: 38em; }
.dark .intro { color: var(--night-text); }
.lead { font-size: 19.5px; line-height: 1.66; }
.label { font: 800 13px/1.2 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; margin: 52px 0 0; }

/* ---- hero ----------------------------------------------------------------------------------- */
.hero { position: relative; overflow: hidden; background: var(--night); color: #fff; padding: 60px 0 84px; }
.hero::after { /* the studio floor: the same faint grid the book's renders stand on */
  content: ""; position: absolute; left: -60%; right: -60%; bottom: 0; height: 58%;
  background-image: linear-gradient(rgba(255, 255, 255, 0.085) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.085) 1px, transparent 1px);
  background-size: 72px 72px; background-position: center bottom;
  transform: perspective(380px) rotateX(64deg); transform-origin: 50% 100%;
  -webkit-mask-image: linear-gradient(to top, #000 0%, rgba(0, 0, 0, 0.6) 40%, transparent 92%);
  mask-image: linear-gradient(to top, #000 0%, rgba(0, 0, 0, 0.6) 40%, transparent 92%);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.22fr) minmax(0, 0.9fr); gap: 60px; align-items: center; }
.hero h1 { font: 800 clamp(40px, 6.3vw, 74px)/0.99 var(--sans); letter-spacing: -0.016em; margin: 20px 0 18px; }
.hero h1 em { font-style: normal; color: var(--gold); }
.hero .sub { font: 700 clamp(18px, 2.1vw, 23px)/1.4 var(--serif); color: #dfe3e8; margin: 0 0 22px; max-width: 26em; }
.hero .pitch { color: var(--night-text); font-size: 17.5px; line-height: 1.7; max-width: 35em; margin-bottom: 28px; }
.buy-row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 16px; }
.price-tag { display: inline-flex; flex-direction: column; margin-right: 6px; }
.price-tag .amt { font: 800 40px/1 var(--sans); letter-spacing: -0.01em; }
.price-tag .what { font: 700 12px/1.2 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--night-soft); margin-top: 6px; }
.hero .small { font: 600 13.5px/1.6 var(--sans); color: var(--night-soft); margin: 20px 0 0; letter-spacing: 0.02em; }
.soon-note { font: 600 14px/1.55 var(--sans); color: var(--night-soft); margin: 14px 0 0; max-width: 34em; }
.on-light .soon-note { color: var(--soft); }
.soon-note a { color: inherit; }

.book { position: relative; max-width: 410px; margin: 0 auto; transform: perspective(1700px) rotateY(-10deg) rotateX(2deg); transform-origin: 40% 50%; }
.book img { width: 100%; border-radius: 3px 8px 8px 3px; box-shadow: 0 34px 70px rgba(0, 0, 0, 0.6), 0 10px 22px rgba(0, 0, 0, 0.45); outline: 1px solid #2a2f36; }
.book::before { content: ""; position: absolute; inset: 0; z-index: 1; border-radius: 3px 8px 8px 3px; pointer-events: none;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.2) 0, rgba(255, 255, 255, 0) 1.4%, rgba(0, 0, 0, 0.4) 2.3%, rgba(0, 0, 0, 0) 5.5%); }
.book.flat { transform: none; }
@media (max-width: 900px) {
  .hero { padding: 40px 0 64px; }
  .hero .wrap { grid-template-columns: 1fr; gap: 44px; }
  .book { max-width: 290px; transform: none; }
}

/* ---- every plane is full of clues ------------------------------------------------------------ */
.split { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr); gap: 56px; align-items: start; }
@media (max-width: 880px) { .split { grid-template-columns: 1fr; gap: 6px; } }
.split .box.clue { margin-top: 64px; }
@media (max-width: 880px) { .split .box.clue { margin-top: 8px; } }
.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin: 20px 0 0; padding: 0; list-style: none; }
@media (max-width: 1020px) { .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .cards { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 20px 18px; }
.card h4 { font: 800 17px/1.25 var(--sans); margin: 0 0 9px; }
.card p { margin: 0; font-size: 15.5px; line-height: 1.6; color: var(--soft); }

/* ---- the promise, set like a case opener page ------------------------------------------------ */
.opener { background: var(--night); color: #fff; border-radius: 16px; padding: clamp(24px, 5vw, 58px); box-shadow: 0 30px 60px rgba(22, 24, 27, 0.18); }
@media (max-width: 520px) { .opener .top span:first-child { display: none; } }
.opener .top { display: flex; justify-content: space-between; gap: 12px; font: 700 12px/1.3 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: #8b929c; border-bottom: 1px solid var(--night-line); padding-bottom: 12px; margin-bottom: 26px; }
.opener .num { display: block; font: 800 clamp(64px, 9vw, 100px)/0.86 var(--sans); color: var(--gold); letter-spacing: -0.02em; }
.opener h2 { color: #fff; margin: 12px 0 10px; }
.opener .ask { font: 700 clamp(17px, 2vw, 20px)/1.45 var(--serif); color: #c9ced6; margin: 0 0 10px; max-width: 34em; }
.opener .cols { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 20px 56px; }
@media (max-width: 820px) { .opener .cols { grid-template-columns: 1fr; } }
.opener h3 { font: 800 13px/1.2 var(--sans); letter-spacing: 0.15em; text-transform: uppercase; color: var(--gold); margin: 28px 0 12px; }
.opener p { color: var(--night-text); }
.ticks { list-style: none; margin: 0; padding: 0; }
.ticks li { position: relative; padding-left: 28px; margin-bottom: 11px; line-height: 1.55; }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 0.5em; width: 11px; height: 11px; border-radius: 2px; background: var(--green-mark); }
.opener .ticks li { color: var(--night-text); }

/* ---- the 10 rules ----------------------------------------------------------------------------- */
.rules { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 12px; margin: 30px 0 0; padding: 0; list-style: none; }
@media (max-width: 1020px) { .rules { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .rules { grid-template-columns: 1fr; } }
.rules li { background: var(--card); border: 1px solid var(--line); border-radius: 9px; padding: 15px 16px 15px; }
.rules .rn { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--ink); color: var(--gold); font: 800 13px/1 var(--sans); margin-bottom: 11px; }
.rules b { display: block; font: 800 16.5px/1.25 var(--sans); margin-bottom: 6px; }
.rules p { margin: 0; font-size: 14.5px; line-height: 1.55; color: var(--soft); }
.sec .box.rule { margin-top: 26px; }

/* ---- how a case works + page previews --------------------------------------------------------- */
.steps { counter-reset: s; list-style: none; margin: 26px 0 0; padding: 0; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 48px; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }
.steps li { counter-increment: s; position: relative; padding: 0 0 0 46px; margin-bottom: 16px; font-size: 16.5px; line-height: 1.55; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: -1px; width: 30px; height: 30px; border-radius: 50%; background: var(--ink); color: var(--gold); font: 800 13.5px/30px var(--sans); text-align: center; }
.steps b { font-family: var(--sans); font-weight: 800; }
.pages { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; margin: 24px 0 0; padding: 0; list-style: none; }
.pages figure { margin: 0; }
.pv { display: block; position: relative; border-radius: 6px; overflow: hidden; background: #fff; border: 1px solid var(--line); box-shadow: 0 16px 34px rgba(22, 24, 27, 0.16), 0 2px 6px rgba(22, 24, 27, 0.08); transition: transform 0.15s ease, box-shadow 0.15s ease; }
.pv:hover { transform: translateY(-3px); box-shadow: 0 22px 44px rgba(22, 24, 27, 0.2), 0 2px 6px rgba(22, 24, 27, 0.08); }
.pv img { width: 100%; }
.pv .zoom { position: absolute; right: 10px; bottom: 10px; font: 800 12px/1 var(--sans); letter-spacing: 0.12em; text-transform: uppercase; background: var(--night); color: #fff; padding: 8px 10px; border-radius: 5px; }
.pages figcaption { font: 500 14.5px/1.55 var(--sans); color: var(--soft); margin-top: 14px; }
.pages figcaption b { color: var(--ink); }
@media (max-width: 760px) {
  .pages { grid-template-columns: none; grid-auto-flow: column; grid-auto-columns: 76%; overflow-x: auto; overscroll-behavior-x: contain; scroll-snap-type: x mandatory; gap: 18px; padding: 4px 4px 18px; margin-left: -4px; margin-right: -4px; }
  .pages li { scroll-snap-align: start; }
}
.swipe { display: none; font: 700 12px/1 var(--sans); letter-spacing: 0.12em; text-transform: uppercase; color: var(--soft); margin: 18px 0 0; }
@media (max-width: 760px) { .swipe { display: block; } }

/* ---- the 30 cases ------------------------------------------------------------------------------ */
.parts { columns: 2; column-gap: 64px; margin-top: 38px; }
@media (max-width: 880px) { .parts { columns: 1; } }
.part { break-inside: avoid; -webkit-column-break-inside: avoid; page-break-inside: avoid; margin: 0 0 44px; display: inline-block; width: 100%; }
.part .pnum { font: 800 12px/1 var(--sans); letter-spacing: 0.3em; text-transform: uppercase; color: var(--gold); margin: 0; }
.part h3 { font: 800 clamp(22px, 2.6vw, 27px)/1.15 var(--sans); margin: 10px 0 6px; color: #fff; }
.part .pline { color: var(--night-soft); margin: 0 0 16px; font-size: 16px; line-height: 1.55; }
.plist { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--night-line); }
.plist li { display: flex; gap: 14px; align-items: baseline; padding: 12px 0; border-bottom: 1px solid var(--night-line); }
.plist .n { font: 800 15px/1 var(--sans); color: var(--gold); width: 26px; flex: none; }
.plist .t { font: 700 16.5px/1.3 var(--sans); color: #fff; }
.plist small { display: block; font: 400 14.5px/1.5 var(--serif); color: var(--night-soft); margin-top: 4px; }

/* ---- what's inside ----------------------------------------------------------------------------- */
.facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 28px 0 0; padding: 0; list-style: none; }
@media (max-width: 640px) { .facts { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.facts li { background: var(--card); border: 1px solid var(--line); border-radius: 9px; padding: 17px 17px 15px; }
.facts .n { display: block; font: 800 34px/1 var(--sans); margin-bottom: 9px; letter-spacing: -0.01em; }
.facts .l { display: block; font: 600 13.5px/1.45 var(--sans); color: var(--soft); }
.inside-more { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 0 48px; margin-top: 34px; }
@media (max-width: 820px) { .inside-more { grid-template-columns: 1fr; } }
.inside-more h3 { font: 800 19px/1.25 var(--sans); margin: 0 0 10px; }
.inside-more > div { margin-bottom: 22px; }

.pic { position: relative; border-radius: var(--radius); overflow: hidden; background: var(--night); margin: 0; }
.pic img { width: 100%; aspect-ratio: 2 / 1; object-fit: cover; }
.pic figcaption { position: absolute; left: 14px; right: 14px; bottom: 11px; font: 600 12.5px/1.4 var(--sans); color: #c9cdd3; letter-spacing: 0.03em; }
.extras { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr); gap: 52px; align-items: center; }
@media (max-width: 880px) { .extras { grid-template-columns: 1fr; gap: 26px; } }
.extras h2 { margin-top: 16px; }

/* ---- the offer ------------------------------------------------------------------------------- */
.offer { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 48px; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: clamp(22px, 4.5vw, 52px); box-shadow: 0 24px 56px rgba(22, 24, 27, 0.09); }
.offer .book { max-width: 230px; }
.offer h2 { font-size: clamp(26px, 3.3vw, 36px); margin: 14px 0 6px; }
.offer .fmt { font: 700 13px/1.3 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--soft); margin: 0 0 18px; }
.offer .amt { font: 800 56px/1 var(--sans); letter-spacing: -0.015em; display: block; margin: 4px 0 18px; }
.offer .ticks { margin: 0 0 26px; }
.offer .ticks li::before { background: var(--green-mark); }
.offer .fine { font: 500 14px/1.6 var(--sans); color: var(--soft); margin: 16px 0 0; }
.offer .fine a { color: var(--ink); }
@media (max-width: 720px) {
  .offer { grid-template-columns: 1fr; gap: 26px; }
  .offer .book { max-width: 170px; margin: 0; }
}

/* ---- FAQ ------------------------------------------------------------------------------------- */
.faq { max-width: 820px; margin-top: 22px; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; font: 800 17.5px/1.4 var(--sans); padding: 19px 46px 19px 0; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 8px; top: 15px; font: 800 26px/1 var(--sans); color: var(--ink); }
.faq details[open] summary::after { content: "\2212"; }
.faq summary:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 0.2em; }
.faq .a { padding: 0 0 20px; max-width: 44em; }
.faq .a p:last-child { margin-bottom: 0; }

/* ---- legal pages and the 404 ----------------------------------------------------------------- */
.doc { max-width: 760px; margin: 0 auto; padding: 60px var(--gutter) 88px; }
.doc .updated { font: 600 13px/1.4 var(--sans); letter-spacing: 0.08em; text-transform: uppercase; color: var(--soft); margin: 0 0 30px; }
.doc h2 { font: 800 21px/1.3 var(--sans); margin: 38px 0 10px; }
.doc ul { padding-left: 22px; margin: 0 0 14px; }
.doc li { margin-bottom: 8px; }
.doc .box { margin: 26px 0; }
.doc .credit-list { list-style: none; padding: 0; }
.doc .credit-list li { background: var(--card); border: 1px solid var(--line); border-radius: 9px; padding: 14px 16px; margin-bottom: 10px; font-size: 16px; line-height: 1.6; }
.doc .credit-list .w { font-family: var(--sans); font-weight: 800; }
.doc .credit-list .m { display: block; color: var(--soft); font-size: 15px; margin-top: 4px; }
.doc a { word-break: break-word; }
.owner-choice { font: 700 12px/1 var(--sans); letter-spacing: 0.12em; text-transform: uppercase; }

.lost { background: var(--night); color: #fff; min-height: calc(100vh - 66px); display: flex; align-items: center; position: relative; overflow: hidden; }
.lost .wrap { position: relative; z-index: 1; padding-top: 64px; padding-bottom: 96px; max-width: 820px; }
.lost .num { display: block; font: 800 clamp(80px, 14vw, 140px)/0.86 var(--sans); color: var(--gold); letter-spacing: -0.03em; }
.lost h1 { font: 800 clamp(32px, 5vw, 52px)/1.05 var(--sans); margin: 16px 0 12px; }
.lost .ask { font: 700 19px/1.5 var(--serif); color: #c9ced6; margin: 0 0 26px; max-width: 32em; }
.lost .box.clue { color: var(--ink); max-width: 36em; }
.lost .buy-row { margin-top: 28px; }

/* ---- page-preview lightbox ------------------------------------------------------------------- */
dialog.lightbox { padding: 0; border: 0; background: transparent; color: #fff; width: fit-content; max-width: 92vw; max-height: 96vh; overflow: visible; }
dialog.lightbox::backdrop { background: rgba(5, 6, 8, 0.88); }
.lightbox img { display: block; width: auto; height: auto; max-width: 92vw; max-height: calc(96vh - 74px); margin: 0 auto; border-radius: 6px; background: #fff; }
.lightbox .bar { display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 12px 2px 0; font: 600 14px/1.45 var(--sans); }
.lightbox .bar p { margin: 0; color: #d7dbe0; }
.lightbox button { flex: none; font: 800 12.5px/1 var(--sans); letter-spacing: 0.12em; text-transform: uppercase; background: var(--gold); color: var(--ink); border: 0; border-radius: 6px; padding: 11px 14px; cursor: pointer; }

/* Buy strips at the decision points and the phone buy bar (owner, 9 Oct 2026: the buy button showed only once) */
.cta-strip { margin-top: 52px; padding: 28px 30px; border-radius: 12px; border: 2px solid var(--gold); background: var(--card); display: flex; align-items: center; justify-content: space-between; gap: 18px 28px; flex-wrap: wrap; }
.cta-strip.on-dark { background: var(--night-2); border-color: var(--gold); color: #fff; }
.cta-line { margin: 0; font: 800 24px/1.25 var(--sans); letter-spacing: -0.01em; }
.cta-act { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.cta-strip .price-tag { margin: 0; }
@media (max-width: 700px) { .cta-strip { padding: 22px 20px; } .cta-line { font-size: 20px; } }
.buy-bar { position: fixed; left: 0; right: 0; bottom: 0; z-index: 45; background: var(--night); color: #fff; border-top: 1px solid var(--night-line); padding: 10px 0 calc(10px + env(safe-area-inset-bottom, 0px)); box-shadow: 0 -8px 24px rgba(0, 0, 0, 0.25); }
.buy-bar .wrap { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.bb-t { font: 700 13px/1.3 var(--sans); min-width: 0; }
.bb-p { color: var(--gold); margin-left: 6px; white-space: nowrap; }
@media (min-width: 701px) { .buy-bar { display: none !important; } }
@media (max-width: 700px) { body.has-buy-bar { padding-bottom: 64px; } }

/* ---- the fare: boarding pass and "the math" (owner, 9 Oct 2026: show the real worth and the price you pay now) ---- */
.price-tag .amt .was, .fare s { text-decoration-thickness: 3px; text-decoration-color: var(--red); }
.price-tag .amt .was { font-size: 0.55em; font-weight: 700; color: var(--night-soft); margin-right: 4px; vertical-align: middle; }
.fare-math { margin-bottom: 64px; }
.fare-math h2 { margin: 14px 0 26px; }
.math-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.math-tile { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 24px 22px 20px; }
.math-tile .big { display: block; font: 800 44px/1 var(--sans); letter-spacing: -0.015em; }
.math-tile .lbl { display: block; font: 700 12px/1.2 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--soft); margin: 8px 0 12px; }
.math-tile p { margin: 0; font-size: 16px; line-height: 1.6; }
.math-tile a { color: var(--ink); }
.fare-math .src { font: 500 13px/1.5 var(--sans); color: var(--soft); margin: 14px 0 0; }
@media (max-width: 880px) { .math-grid { grid-template-columns: 1fr; } }
.pass-offer { align-items: start; }
.pass { display: grid; grid-template-columns: minmax(0, 1fr) 118px; border: 2px solid var(--ink); border-radius: 14px; overflow: hidden; background: var(--card); }
.pass-main { padding: 22px 26px 24px; min-width: 0; }
.pass-head { display: flex; justify-content: space-between; gap: 10px; font: 800 12px/1 var(--sans); letter-spacing: 0.18em; text-transform: uppercase; background: var(--gold); color: var(--ink); margin: -22px -26px 18px; padding: 12px 26px; }
.pass h2 { font-size: clamp(24px, 2.8vw, 32px); margin: 0 0 14px; }
.pass-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 20px; margin: 0 0 18px; }
.pass-fields dt { font: 700 12px/1.2 var(--sans); letter-spacing: 0.16em; text-transform: uppercase; color: var(--soft); }
.pass-fields dd { margin: 3px 0 0; font: 700 15px/1.35 var(--sans); }
.fare { width: 100%; border-collapse: collapse; margin: 0 0 12px; font-family: var(--sans); }
.fare th { text-align: left; font: 500 15px/1.45 var(--sans); padding: 8px 12px 8px 0; }
.fare td { text-align: right; font: 700 13px/1.3 var(--sans); letter-spacing: 0.08em; text-transform: uppercase; color: var(--green); white-space: nowrap; padding: 8px 0; }
.fare tbody tr + tr th, .fare tbody tr + tr td { border-top: 1px dashed var(--line); }
.fare tfoot th, .fare tfoot td { border-top: 2px solid var(--ink); padding-top: 12px; }
.fare tfoot tr + tr th, .fare tfoot tr + tr td { border-top: 0; padding-top: 2px; }
.fare tfoot .std td { font: 700 22px/1 var(--sans); color: var(--soft); letter-spacing: 0; text-transform: none; }
.fare tfoot .now th { font-weight: 800; }
.fare tfoot .now td { font: 800 46px/1 var(--sans); color: var(--ink); letter-spacing: -0.015em; text-transform: none; }
.fare tfoot .save td { font: 800 16px/1 var(--sans); color: var(--green); letter-spacing: 0.04em; }
.pass-until { font: 600 14px/1.5 var(--sans); color: var(--soft); margin: 0 0 16px; }
.pass-until b { color: var(--ink); }
.pass-stub { position: relative; border-left: 2px dashed var(--ink); background: var(--paper-2); display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 22px 10px; text-align: center; }
.pass-stub::before, .pass-stub::after { content: ""; position: absolute; left: -12px; width: 22px; height: 22px; border-radius: 50%; background: var(--paper); border: 2px solid var(--ink); }
.pass-stub::before { top: -13px; } .pass-stub::after { bottom: -13px; }
.stub-f { font: 800 20px/1 var(--sans); letter-spacing: 0.06em; }
.stub-l { font: 700 12px/1.2 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--soft); }
.barcode { flex: 1; width: 64px; min-height: 120px; margin-top: 6px; background: repeating-linear-gradient(0deg, var(--ink) 0 2px, transparent 2px 4px, var(--ink) 4px 7px, transparent 7px 9px, var(--ink) 9px 10px, transparent 10px 13px); }
@media (max-width: 720px) {
  .pass { grid-template-columns: 1fr; }
  .pass-main { padding: 20px 18px 22px; }
  .pass-head { margin: -20px -18px 16px; padding: 11px 18px; }
  .pass-stub { border-left: 0; border-top: 2px dashed var(--ink); flex-direction: row; justify-content: space-between; padding: 14px 18px; }
  .pass-stub::before, .pass-stub::after { top: -13px; left: auto; }
  .pass-stub::before { left: -13px; } .pass-stub::after { right: -13px; bottom: auto; }
  .barcode { flex: 0 0 auto; width: 70px; min-height: 0; height: 34px; margin: 0; background: repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 4px, var(--ink) 4px 7px, transparent 7px 9px, var(--ink) 9px 10px, transparent 10px 13px); }
  .fare tfoot .now td { font-size: 38px; }
}
/* the departures board: real prices of other ways to learn about planes (checked 9 Oct 2026), ending on the book */
.math-wrap { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: 18px; align-items: stretch; }
.math-tiles { display: grid; gap: 18px; }
.board { margin: 0; background: var(--night); color: var(--night-text); border-radius: 12px; padding: 18px 20px 14px; border: 1px solid var(--night-line); }
.board figcaption { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font: 800 13px/1.2 var(--sans); letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold); padding-bottom: 12px; border-bottom: 1px solid var(--night-line); }
.board figcaption span + span { color: var(--night-soft); letter-spacing: 0.1em; }
.board table { width: 100%; border-collapse: collapse; }
.board thead th { font: 700 12px/1.2 var(--sans); letter-spacing: 0.14em; text-transform: uppercase; color: var(--night-soft); text-align: left; padding: 12px 0 6px; }
.board thead th + th { text-align: right; }
.board tbody th { text-align: left; font: 500 15px/1.4 var(--sans); padding: 11px 14px 11px 0; border-top: 1px dashed var(--night-line); }
.board tbody td { text-align: right; font: 800 18px/1.2 var(--sans); white-space: nowrap; padding: 11px 0; border-top: 1px dashed var(--night-line); font-variant-numeric: tabular-nums; }
.board tbody tr.ours th, .board tbody tr.ours td { color: var(--ink); background: var(--gold); border-top: 0; }
.board tbody tr.ours th { font-weight: 800; padding-left: 12px; border-radius: 6px 0 0 6px; }
.board tbody tr.ours td { font-size: 24px; padding-right: 12px; border-radius: 0 6px 6px 0; }
@media (max-width: 880px) { .math-wrap { grid-template-columns: 1fr; } }
@media (max-width: 420px) { .board tbody th { font-size: 14px; } .board tbody td { font-size: 16px; } .board tbody tr.ours td { font-size: 20px; } }
@media (max-width: 420px) {
  .pass-offer { padding: 12px; }
  .pass-main { padding: 18px 14px 20px; }
  .pass-head { margin: -18px -14px 14px; padding: 10px 14px; letter-spacing: 0.1em; }
  .pass-fields { gap: 8px 12px; }
  .fare th { font-size: 14px; padding-right: 8px; }
  .fare td { letter-spacing: 0.03em; }
  .pass-stub { padding: 12px 14px; }
}

/* the launch countdown (owner, 9 Oct 2026): to the real end of the launch fare, never reset */
.countdown { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; margin: 16px 0 0; font: 700 13px/1.3 var(--sans); }
.countdown[hidden] { display: none !important; }
.cd-lbl { letter-spacing: 0.14em; text-transform: uppercase; color: var(--soft); }
.countdown.on-dark .cd-lbl { color: var(--night-soft); }
.cd-t b { display: inline-block; min-width: 1.6em; padding: 4px 6px; margin-right: 2px; border-radius: 5px; background: var(--ink); color: var(--gold); font: 800 18px/1 var(--sans); text-align: center; font-variant-numeric: tabular-nums; }
.countdown.on-dark .cd-t b { background: var(--night-2); border: 1px solid var(--night-line); }
.cd-t i { font-style: normal; font-weight: 700; margin-right: 6px; color: inherit; }
.pass .countdown { margin: 0 0 16px; }
/* "What $42 really buys" moved up, after the opening story (owner, 9 Oct 2026: "move upwards for better conversion") */
#math .fare-math { margin-bottom: 0; }
#rules { border-top: 1px solid var(--line); }
.math-cta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; margin-top: 22px; }
.math-cta-note { font: 600 14px/1.5 var(--sans); color: var(--soft); }