:root {
  --navy: #0e2240;
  --deep: #0b1a30;
  --red: #d8232a;
  --red-dark: #b3161c;
  --gold: #c99a2e;
  --page: #f4f6f9;
  --white: #ffffff;
  --ink: #101a2c;
  --ink-2: #3b475c;
  --ink-3: #6a7588;
  --line: #d9dfe8;
  --green: #14653a;
  --green-tint: #e3f3ea;
  --sans: 'Archivo', 'Helvetica Neue', Arial, sans-serif;
  --mono: 'JetBrains Mono', Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { color-scheme: light; }
body { margin: 0; background: var(--page); color: var(--ink); font-family: var(--sans); font-size: 16px; line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: var(--navy); }
img { max-width: 100%; display: block; }
.wrap { max-width: 980px; margin: 0 auto; padding-inline: 20px; }

/* header */
.top { background: var(--deep); color: var(--white); }
.top .wrap { display: flex; align-items: center; gap: 14px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--white); text-decoration: none; }
.brand img { width: 40px; height: 40px; border-radius: 11px; }
.brand b { font-weight: 800; font-size: 21px; letter-spacing: -0.01em; }
.brand b i { font-style: italic; font-weight: 800; }
.nav { margin-left: auto; display: flex; gap: 18px; flex-wrap: wrap; }
.nav a { color: rgba(255,255,255,.78); text-decoration: none; font-family: var(--mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.nav a:hover, .nav a:focus-visible { color: var(--white); }

/* hero */
.hero { background: var(--navy); color: var(--white); padding-block: 56px 60px; position: relative; overflow: hidden; }
.hero::after { content: ''; position: absolute; inset: auto -10% -60% auto; width: 60%; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(closest-side, rgba(216,35,42,.28), rgba(216,35,42,0)); pointer-events: none; }
.kicker { font-family: var(--mono); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--gold); font-weight: 700; }
.hero h1 { font-size: clamp(38px, 7vw, 66px); line-height: 1; letter-spacing: -0.03em; font-weight: 800; margin: 14px 0 18px; max-width: 14ch; text-wrap: balance; }
.hero p { font-size: 19px; line-height: 1.45; color: rgba(255,255,255,.8); max-width: 54ch; margin: 0 0 26px; }
.cta { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 22px; border-radius: 13px; background: var(--red); color: var(--white); font-family: var(--mono); font-weight: 700; font-size: 13px; letter-spacing: .1em; text-transform: uppercase; text-decoration: none; border: 0; cursor: pointer; }
.cta:hover, .cta:focus-visible { background: var(--red-dark); }
.cta.ghost { background: transparent; border: 1px solid rgba(255,255,255,.35); color: var(--white); }
.cta.ghost:hover { background: rgba(255,255,255,.08); }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.status { display: inline-flex; align-items: center; gap: 8px; margin-top: 26px; font-family: var(--mono); font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.7); }
.status i { width: 8px; height: 8px; border-radius: 50%; background: #3ac36f; box-shadow: 0 0 0 4px rgba(58,195,111,.2); }

/* sections */
section { padding-block: 48px; }
h2 { font-size: 30px; line-height: 1.1; letter-spacing: -0.02em; margin: 0 0 8px; text-wrap: balance; }
.lead { color: var(--ink-2); font-size: 17px; max-width: 62ch; margin: 0 0 24px; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 14px; }
.card { background: var(--white); border: 1px solid var(--line); border-radius: 16px; padding: 18px 18px 16px; }
.card .k { font-family: var(--mono); font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--red); font-weight: 700; }
.card h3 { margin: 8px 0 6px; font-size: 18px; line-height: 1.2; }
.card p { margin: 0; color: var(--ink-2); font-size: 14.5px; }
.steps { counter-reset: s; display: grid; gap: 12px; margin: 0; padding: 0; list-style: none; max-width: 68ch; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 34px 1fr; column-gap: 12px; row-gap: 4px; align-items: start; }
.steps li::before { content: counter(s); grid-column: 1; grid-row: 1 / span 2; width: 30px; height: 30px; border-radius: 50%; background: var(--navy); color: var(--white); font-family: var(--mono); font-weight: 700; font-size: 13px; display: grid; place-items: center; margin-top: 1px; }
.steps li > b, .steps li > span { grid-column: 2; }
.steps b { display: block; }
.steps span { color: var(--ink-2); font-size: 14.5px; }
code, .code { font-family: var(--mono); font-size: 13px; background: #e9edf4; padding: 2px 6px; border-radius: 6px; word-break: break-all; }
.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.note { font-size: 13.5px; color: var(--ink-3); }

/* form */
form { display: grid; gap: 12px; background: var(--white); border: 1px solid var(--line); border-radius: 18px; padding: 20px; }
.row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; }
label { display: grid; gap: 6px; font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); font-weight: 700; }
input, select, textarea { font: inherit; font-size: 15px; color: var(--ink); background: var(--page); border: 1px solid var(--line); border-radius: 11px; padding: 12px 13px; width: 100%; min-height: 48px; }
textarea { min-height: 120px; resize: vertical; }
input:focus-visible, select:focus-visible, textarea:focus-visible, .cta:focus-visible, a:focus-visible { outline: 3px solid rgba(216,35,42,.35); outline-offset: 1px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.msg { font-size: 14px; color: var(--ink-2); }
.msg.ok { color: var(--green); font-weight: 700; }
.msg.bad { color: var(--red-dark); font-weight: 700; }

/* prose pages */
.prose { max-width: 70ch; }
.prose h2 { font-size: 22px; margin-top: 34px; }
.prose h3 { font-size: 17px; margin: 22px 0 6px; }
.prose p, .prose li { color: var(--ink-2); }
.prose .meta { font-family: var(--mono); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.prose ul { padding-left: 20px; }

footer { border-top: 1px solid var(--line); padding-block: 26px 40px; color: var(--ink-3); font-size: 13.5px; }
footer .wrap { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
footer a { color: var(--ink-2); }
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }

/* screenshots */
.shots { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 22px; margin-top: 8px; }
.shots figure { margin: 0; }
.phone { border-radius: 26px; overflow: hidden; background: var(--deep); padding: 8px; box-shadow: 0 18px 40px rgba(11,26,48,.22); max-width: 320px; margin: 0 auto; }
.phone img { border-radius: 19px; width: 100%; height: auto; }
.shots figcaption { text-align: center; margin-top: 12px; color: var(--ink-2); font-size: 14px; }

/* counter */
.counter { display: grid; gap: 14px; background: var(--navy); color: var(--white); border-radius: 18px; padding: 22px 22px 18px; margin: 0 0 18px; }
.counter .big { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.counter .big span { font-family: var(--mono); font-weight: 800; font-size: clamp(44px, 9vw, 72px); line-height: 1; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
.counter .big small { font-family: var(--mono); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: rgba(255,255,255,.7); }
.counter .split { display: flex; gap: 18px 26px; flex-wrap: wrap; border-top: 1px solid rgba(255,255,255,.14); padding-top: 14px; }
.counter .split div { display: grid; gap: 3px; }
.counter .split b { font-family: var(--mono); font-size: 20px; font-variant-numeric: tabular-nums; }
.counter .split span { font-family: var(--mono); font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.6); }

/* checkbox row */
label.check { display: flex; align-items: center; gap: 12px; text-transform: none; letter-spacing: 0; font-family: var(--sans); font-size: 15px; font-weight: 600; color: var(--ink); min-height: 48px; padding: 0 2px; cursor: pointer; }
label.check input { width: 22px; height: 22px; min-height: 0; padding: 0; margin: 0; accent-color: var(--red); flex: 0 0 auto; }
label.check small { display: block; font-weight: 400; font-size: 12.5px; color: var(--ink-3); margin-top: 2px; }

/* hero split-flap board */
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .9fr); gap: 36px; align-items: center; position: relative; z-index: 1; }
@media (max-width: 760px) { .hero-grid { grid-template-columns: 1fr; } }
.board { display: block; background: rgba(8,18,34,.92); border: 1px solid rgba(255,255,255,.14); border-radius: 18px; padding: 18px 18px 16px; text-decoration: none; color: var(--white); box-shadow: 0 24px 50px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.06); backdrop-filter: blur(6px); }
.board-head, .board-foot { display: flex; align-items: center; justify-content: space-between; font-family: var(--mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: rgba(255,255,255,.72); }
.board-head .dot { width: 8px; height: 8px; border-radius: 50%; background: #3ac36f; box-shadow: 0 0 0 4px rgba(58,195,111,.2); }
.board-foot { margin-top: 14px; color: rgba(255,255,255,.55); gap: 6px 14px; flex-wrap: wrap; }
.board-foot .go { white-space: nowrap; }
.board-foot .go { color: var(--gold); }
.flaps { --fh: clamp(76px, 11vw, 108px); display: flex; gap: 8px; margin-top: 14px; justify-content: center; }
.flap { position: relative; display: block; width: calc(var(--fh) * .72); height: var(--fh); perspective: 600px; font-family: var(--mono); font-weight: 800; font-size: calc(var(--fh) * .82); color: #f3f5f8; }
.flap .half { position: absolute; left: 0; right: 0; height: 50%; overflow: hidden; display: block; background: #1a2942; }
.flap .half > span { display: block; height: var(--fh); line-height: var(--fh); text-align: center; }
.flap .top, .flap .leaf-top { top: 0; border-radius: 8px 8px 0 0; border-bottom: 1px solid #050b17; }
.flap .bottom, .flap .leaf-bottom { bottom: 0; border-radius: 0 0 8px 8px; background: #152238; }
.flap .bottom > span, .flap .leaf-bottom > span { margin-top: calc(var(--fh) * -0.5); }
.flap .leaf { position: absolute; inset: 0; display: block; transform-style: preserve-3d; -webkit-transform-style: preserve-3d; transform-origin: 50% 50%; pointer-events: none; visibility: hidden; }
.flap .leaf.go { visibility: visible; }
.flap .leaf-top { backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.flap .leaf-bottom { transform: rotateX(180deg); backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.flap .leaf.go { animation: flap .115s ease-in forwards; }
@keyframes flap { from { transform: rotateX(0deg); } to { transform: rotateX(-180deg); } }
@media (prefers-reduced-motion: reduce) { .flap .leaf.go { animation-duration: .01s; } }

/* the hero carries the app's own picture: crew running for the aircraft at night */
.hero { background: #0e2240 url('/hero.jpg') center 30% / cover no-repeat; }
.hero::before { content: ''; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(14,34,64,.94) 0%, rgba(14,34,64,.82) 45%, rgba(14,34,64,.55) 100%), linear-gradient(180deg, rgba(11,26,48,.35), rgba(11,26,48,.7)); }
.hero::after { display: none; }

/* how it works */
.steps.how { max-width: 72ch; gap: 16px; }
.steps.how b { font-size: 18px; margin-bottom: 4px; }
.steps.how span { font-size: 15.5px; }

/* everything in a hero sits above its picture scrim */
.hero > .wrap { position: relative; z-index: 1; }

/* phone header: logo on one line, links in one row beneath it */
.brand b { white-space: nowrap; }
@media (max-width: 640px) {
  .top .wrap { flex-wrap: wrap; row-gap: 4px; padding-block: 10px 6px; min-height: 0; }
  .nav { margin-left: 0; width: 100%; flex-wrap: nowrap; overflow-x: auto; gap: 18px; padding-block: 6px 4px; scrollbar-width: none; }
  .nav::-webkit-scrollbar { display: none; }
  .nav a { white-space: nowrap; font-size: 11.5px; }
  .status { flex-wrap: wrap; row-gap: 4px; }
  /* on a phone the in-page links go; the buttons in the hero already lead there */
  .nav .wide-only { display: none; }
}