/* The site wears the app icon's colors: deep navy, sky blue for money in, orange for money out and the f key. */
:root {
  --bg: #13213f;
  --bg-deep: #0c1630;
  --panel: rgba(255, 255, 255, 0.06);
  --rim: rgba(255, 255, 255, 0.12);
  --text: #f2f5fb;
  --muted: rgba(226, 233, 246, 0.74);
  --sky: #5ac8fa;
  --orange: #ff9f0a;
  --blue: #3a8bff;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background-color: var(--bg);
  background-image: radial-gradient(1200px 700px at 20% 0%, #24365c 0%, transparent 70%),
    linear-gradient(180deg, var(--bg-deep) 0%, var(--bg) 40%, #1d3a66 100%);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a { color: var(--sky); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 20px; }

header.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0;
}

.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 650; font-size: 19px; }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.brand:hover { text-decoration: none; }

.links { display: flex; gap: 18px; font-size: 15px; }
.links a { color: var(--muted); }
.links a:hover { color: var(--text); }

/* Hero: the pitch beside two phones, one light and one dark with f pending. */
.hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 40px;
  align-items: center;
  padding: 40px 0 72px;
}

.hero .icon { width: 88px; height: 88px; border-radius: 20px; box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35); }

h1 { font-size: clamp(36px, 6vw, 56px); line-height: 1.05; letter-spacing: -0.02em; margin: 22px 0 16px; }
h1 .accent { color: var(--orange); }

.lead { font-size: 19px; color: var(--muted); margin: 0 0 26px; max-width: 34em; }

.store {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 22px;
  border-radius: 14px;
  background: var(--text);
  color: #0c1630;
  font-weight: 650;
}
.store:hover { text-decoration: none; background: #fff; }
.store svg { width: 22px; height: 22px; fill: currentColor; }

.fine { font-size: 14px; color: var(--muted); margin-top: 14px; }

.phones { position: relative; display: flex; justify-content: center; gap: 18px; }
.phones img {
  width: min(46%, 230px);
  border-radius: 34px;
  border: 1px solid var(--rim);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}
.phones img:last-child { transform: translateY(36px); }

section { padding: 56px 0; }
h2 { font-size: clamp(26px, 4vw, 36px); letter-spacing: -0.01em; line-height: 1.15; margin: 0 0 12px; }
.sub { color: var(--muted); max-width: 40em; margin: 0 0 30px; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.card {
  background: var(--panel);
  border: 1px solid var(--rim);
  border-radius: 20px;
  padding: 22px;
}
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .key {
  display: inline-grid;
  place-items: center;
  min-width: 44px;
  height: 44px;
  padding: 0 12px;
  margin-bottom: 14px;
  border-radius: 22px;
  font-weight: 600;
  font-size: 15px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--rim);
}
.card .key.f { background: var(--orange); color: #000; border-color: transparent; }
.card .key.g { background: var(--blue); color: #fff; border-color: transparent; }

.wide img {
  display: block;
  width: 100%;
  border-radius: 24px;
  border: 1px solid var(--rim);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
}

/* A worked example, keystroke by keystroke. */
.keys { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0 0 14px; }
.keys kbd {
  font: 600 15px/1 -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--rim);
}
.keys kbd.g { background: var(--blue); border-color: transparent; }
.keys .result { font-size: 22px; font-weight: 300; margin-left: 6px; font-variant-numeric: tabular-nums; }

.promise {
  background: var(--panel);
  border: 1px solid var(--rim);
  border-radius: 24px;
  padding: 32px;
}
.promise p { color: var(--muted); margin: 0; }

/* Privacy and support pages. */
article.doc { max-width: 760px; padding: 20px 0 60px; }
article.doc h1 { font-size: clamp(30px, 5vw, 42px); }
article.doc h2 { font-size: 22px; margin-top: 34px; }
article.doc p, article.doc li { color: var(--muted); }
article.doc strong { color: var(--text); }
.updated { font-size: 15px; }

.contact {
  background: var(--panel);
  border: 1px solid var(--rim);
  border-radius: 18px;
  padding: 20px 22px;
  margin: 24px 0;
  color: var(--muted);
}
.contact strong { color: var(--text); }

details {
  background: var(--panel);
  border: 1px solid var(--rim);
  border-radius: 16px;
  padding: 0 20px;
  margin: 10px 0;
}
details summary { cursor: pointer; padding: 16px 0; font-weight: 600; color: var(--text); }
details p { margin: 0 0 16px; }
details code, article.doc code {
  font: 14px ui-monospace, SFMono-Regular, Menlo, monospace;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 6px;
  color: var(--text);
}

footer { border-top: 1px solid var(--rim); padding: 26px 0 40px; font-size: 14px; color: var(--muted); }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
footer nav { display: flex; gap: 18px; }
footer a { color: var(--muted); }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 16px; }
  .grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .links { gap: 14px; }
  .links .hide-small { display: none; }
  .grid { grid-template-columns: 1fr; }
  .phones img { border-radius: 24px; }
  .phones img:last-child { transform: translateY(24px); }
  .promise { padding: 24px; }
}