@font-face {
  font-family: "Geist";
  src: url("fonts/Geist.ttf") format("truetype");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Geist Mono";
  src: url("fonts/GeistMono.ttf") format("truetype");
  font-weight: 100 900;
  font-display: swap;
}

/* Same tokens as the iOS app (UI/DesignSystem/Colors.swift) */
:root {
  --bg: oklch(0.975 0.007 80);
  --paper: oklch(0.995 0.003 85);
  --sunken: oklch(0.955 0.008 80);
  --line: oklch(0.89 0.009 70);
  --line-strong: oklch(0.80 0.012 70);
  --ink: oklch(0.18 0.008 60);
  --ink-2: oklch(0.36 0.010 60);
  --ink-3: oklch(0.53 0.010 60);
  --ink-4: oklch(0.70 0.008 60);
  --accent: oklch(0.62 0.14 50);
  --accent-ink: oklch(0.42 0.13 45);
  --accent-bg: oklch(0.94 0.045 70);
  --paid: oklch(0.58 0.12 155);
  --shadow: 0 1px 0 oklch(0.85 0.01 70), 0 18px 40px -18px oklch(0.35 0.03 60 / 0.35);

  --p1: oklch(0.88 0.07 95);
  --p2: oklch(0.88 0.07 45);
  --p3: oklch(0.87 0.06 165);
  --p4: oklch(0.87 0.06 260);
  --p-ink: oklch(0.32 0.05 60);

  --sans: "Geist", ui-sans-serif, -apple-system, "Segoe UI", sans-serif;
  --mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --wrap: 1120px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: oklch(0.16 0.008 60);
    --paper: oklch(0.215 0.008 60);
    --sunken: oklch(0.19 0.008 60);
    --line: oklch(0.30 0.010 60);
    --line-strong: oklch(0.40 0.012 60);
    --ink: oklch(0.96 0.005 80);
    --ink-2: oklch(0.80 0.010 70);
    --ink-3: oklch(0.64 0.010 60);
    --ink-4: oklch(0.47 0.010 60);
    --accent: oklch(0.74 0.13 55);
    --accent-ink: oklch(0.82 0.12 55);
    --accent-bg: oklch(0.30 0.06 50);
    --paid: oklch(0.74 0.13 155);
    --shadow: 0 1px 0 oklch(0.28 0.01 60), 0 24px 50px -20px oklch(0 0 0 / 0.6);
    --p1: oklch(0.42 0.06 95);
    --p2: oklch(0.42 0.07 45);
    --p3: oklch(0.42 0.06 165);
    --p4: oklch(0.42 0.06 260);
    --p-ink: oklch(0.95 0.02 70);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.55 var(--sans);
  font-feature-settings: "ss01";
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.mono, .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; background: var(--paper); padding: 8px 12px; z-index: 10; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* ---------- header ---------- */
.top { display: flex; align-items: center; gap: 28px; height: 76px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; letter-spacing: -0.01em; font-size: 18px; }
.brand img { width: 30px; height: 30px; border-radius: 7px; }
.top nav { display: flex; gap: 22px; margin-left: 12px; font-size: 15px; color: var(--ink-2); }
.top nav a { text-decoration: none; }
.top nav a:hover { color: var(--ink); }
.langs { margin-left: auto; display: flex; gap: 2px; font: 500 12px/1 var(--mono); letter-spacing: 0.04em; }
.langs a { text-decoration: none; padding: 7px 7px; border-radius: 6px; color: var(--ink-3); }
.langs a:hover { color: var(--ink); }
.langs a[aria-current] { color: var(--ink); background: var(--sunken); }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--ink); color: var(--bg);
  text-decoration: none; font-weight: 500; font-size: 15px;
  padding: 12px 18px; border-radius: 11px;
  transition: transform .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn svg { width: 17px; height: 17px; }
.btn.soon { background: transparent; color: var(--ink-2); box-shadow: inset 0 0 0 1px var(--line-strong); cursor: default; }
.btn.soon:hover { transform: none; }
.top .btn { padding: 9px 14px; font-size: 14px; }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: 1.2fr 1fr; gap: 56px; align-items: start; padding-block: 64px 96px; }
.kicker { font: 500 12px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 22px; }
h1 {
  font-size: clamp(40px, 5.4vw, 64px); line-height: 1; letter-spacing: -0.045em;
  font-weight: 650; margin: 0 0 26px; text-wrap: balance;
}
h1 em { font-style: normal; color: var(--accent); }
.lede { font-size: 19px; color: var(--ink-2); max-width: 30em; margin: 0 0 34px; text-wrap: pretty; }
.cta { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.cta small { color: var(--ink-3); font-size: 14px; }

/* ---------- receipt ---------- */
.stage { position: relative; padding-top: 8px; }
.receipt {
  --tooth: 9px;
  position: relative;
  background: var(--paper);
  box-shadow: var(--shadow);
  padding: 28px 26px 30px;
  transform: rotate(1.2deg);
  font-family: var(--mono);
  font-size: 14px;
  max-width: 440px;
  margin-left: auto;
  -webkit-mask:
    conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(var(--tooth) * 2) var(--tooth) repeat-x,
    linear-gradient(#000 0 0) top / 100% calc(100% - var(--tooth) + 1px) no-repeat;
          mask:
    conic-gradient(from -45deg at bottom, #0000, #000 1deg 89deg, #0000 90deg) bottom / calc(var(--tooth) * 2) var(--tooth) repeat-x,
    linear-gradient(#000 0 0) top / 100% calc(100% - var(--tooth) + 1px) no-repeat;
  padding-bottom: calc(30px + var(--tooth));
}
.rc-head { text-align: center; padding-bottom: 14px; }
.rc-head b { display: block; font-size: 15px; letter-spacing: 0.22em; }
.rc-head span { color: var(--ink-3); font-size: 12px; }
.cut { border: 0; border-top: 1.5px dashed var(--line-strong); margin: 12px 0; }
.rc-item { padding: 10px 0 12px; }
.rc-item + .rc-item { border-top: 1px dotted var(--line); }
.rc-line { display: flex; gap: 8px; align-items: baseline; }
.rc-line .q { color: var(--ink-3); min-width: 2.2em; }
.rc-line .n { flex: 1; font-family: var(--sans); font-size: 15px; font-weight: 500; }
.rc-line .p { font-variant-numeric: tabular-nums; }
.who { display: flex; gap: 6px; margin: 8px 0 0 calc(2.2em + 8px); align-items: center; flex-wrap: wrap; }
.chip {
  font: 600 11px/1 var(--sans); letter-spacing: 0.02em;
  width: 30px; height: 30px; border-radius: 50%;
  border: 1.5px dashed var(--line-strong); background: transparent; color: var(--ink-3);
  cursor: pointer; padding: 0;
  transition: background .15s, color .15s, border-color .15s, transform .12s;
}
.chip:hover { border-color: var(--ink-3); }
.chip:active { transform: scale(.92); }
.chip[aria-pressed="true"] { border: 1.5px solid transparent; background: var(--c); color: var(--p-ink); }
.each { margin-left: 6px; font-size: 11.5px; color: var(--ink-3); }
.each.none { color: var(--accent-ink); }
.rc-sums { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; color: var(--ink-2); font-size: 13px; }
.rc-sums .t { color: var(--ink); font-weight: 600; font-size: 15px; }
.rc-sums .r { text-align: right; font-variant-numeric: tabular-nums; }
.people { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 4px; }
.person { background: var(--sunken); border-radius: 8px; padding: 9px 8px 8px; text-align: center; }
.person i { display: block; font: 600 10.5px/1 var(--sans); font-style: normal; color: var(--ink-3); margin-bottom: 6px; }
.person b { font-weight: 600; font-size: 14px; font-variant-numeric: tabular-nums; }
.person.zero b { color: var(--ink-4); }
.stage { padding-top: 44px; }
.note {
  position: absolute; left: -10px; top: 0; margin: 0;
  font: 15px/1.3 var(--sans); color: var(--ink-3); transform: rotate(-3deg);
  display: flex; align-items: flex-start; gap: 4px;
}
.note svg { width: 54px; height: 44px; margin-top: 8px; color: var(--ink-4); }
.rc-foot { text-align: center; color: var(--ink-4); font-size: 11px; margin-top: 14px; letter-spacing: 0.1em; }

/* ---------- sections ---------- */
section { padding: 96px 0; border-top: 1px solid var(--line); }
.label { font: 500 12px/1 var(--mono); letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 18px; }
h2 { font-size: clamp(32px, 4.2vw, 50px); line-height: 1.04; letter-spacing: -0.035em; font-weight: 640; margin: 0 0 20px; max-width: 16em; text-wrap: balance; }
.sub { color: var(--ink-2); font-size: 18px; max-width: 34em; margin: 0; text-wrap: pretty; }

.steps { list-style: none; margin: 56px 0 0; padding: 0; counter-reset: s; }
.steps li { display: grid; grid-template-columns: 90px 1fr 1.25fr; gap: 24px; padding: 26px 0; border-top: 1px dashed var(--line-strong); align-items: baseline; }
.steps li:last-child { border-bottom: 1px dashed var(--line-strong); }
.steps .k { font: 500 14px var(--mono); color: var(--accent); }
.steps h3 { margin: 0; font-size: 22px; letter-spacing: -0.02em; font-weight: 600; }
.steps p { margin: 0; color: var(--ink-2); }

.math { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.ledger { background: var(--paper); border-radius: 4px; box-shadow: var(--shadow); padding: 26px 28px; font: 14px/1.5 var(--mono); }
.ledger .row { display: flex; gap: 10px; align-items: baseline; padding: 5px 0; }
.ledger .row span:first-child { color: var(--ink-2); }
.ledger .dots { flex: 1; border-bottom: 1.5px dotted var(--line-strong); transform: translateY(-4px); }
.ledger .row.tot { border-top: 1.5px dashed var(--line-strong); margin-top: 10px; padding-top: 14px; font-weight: 600; }
.ledger .row.tot span:first-child { color: var(--ink); }
.ledger .why { color: var(--ink-3); font-size: 12px; margin: -2px 0 6px; }
.ledger h4 { margin: 0 0 14px; font: 600 15px var(--sans); }

.small-things { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 52px; border-top: 1px solid var(--line); }
.small-things div { padding: 26px 26px 26px 0; border-bottom: 1px solid var(--line); }
.small-things div:not(:nth-child(3n)) { border-right: 1px solid var(--line); }
.small-things div:not(:nth-child(3n+1)) { padding-left: 26px; }
.small-things h3 { margin: 0 0 6px; font-size: 17px; font-weight: 600; letter-spacing: -0.01em; }
.small-things p { margin: 0; color: var(--ink-2); font-size: 15.5px; }

.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 52px; }
.plan { border: 1px solid var(--line); border-radius: 14px; padding: 28px; background: var(--paper); }
.plan.pro { border-color: var(--ink); }
.plan h3 { margin: 0; font-size: 22px; font-weight: 600; letter-spacing: -0.02em; display: flex; justify-content: space-between; align-items: baseline; }
.plan h3 small { font: 500 12px var(--mono); color: var(--ink-3); letter-spacing: 0.06em; text-transform: uppercase; }
.plan ul { list-style: none; padding: 0; margin: 20px 0 0; }
.plan li { padding: 10px 0; border-top: 1px dotted var(--line-strong); display: flex; justify-content: space-between; gap: 16px; font-size: 15.5px; }
.plan li span:last-child { font-family: var(--mono); font-size: 14px; color: var(--ink-2); text-align: right; }
.plan .fine { margin: 18px 0 0; color: var(--ink-3); font-size: 14px; }

.faq { margin-top: 44px; max-width: 760px; }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 20px 36px 20px 0; font-weight: 550; font-size: 18px; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 16px; font: 400 24px var(--mono); color: var(--ink-3); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: -4px 0 22px; color: var(--ink-2); max-width: 40em; }

.end { padding-block: 110px 90px; }
.end h2 { max-width: 13em; }
.end .cta { margin-top: 30px; }

footer { border-top: 1px solid var(--line); padding: 30px 0 48px; color: var(--ink-3); font-size: 14px; }
footer .wrap { display: flex; gap: 24px; flex-wrap: wrap; align-items: center; }
footer nav { display: flex; gap: 20px; margin-left: auto; flex-wrap: wrap; }
footer a { text-decoration: none; }
footer a:hover { color: var(--ink); }

/* ---------- plain document pages ---------- */
.doc { max-width: 720px; padding: 40px 24px 100px; margin: 0 auto; }
.doc h1 { font-size: clamp(36px, 5vw, 52px); margin-bottom: 10px; }
.doc .meta { color: var(--ink-3); font: 13px var(--mono); margin: 0 0 40px; }
.doc h2 { font-size: 22px; letter-spacing: -0.02em; margin: 44px 0 10px; max-width: none; }
.doc p, .doc li { color: var(--ink-2); }
.doc ul { padding-left: 20px; }
.doc li { margin: 6px 0; }
.doc table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 14px 0; }
.doc th, .doc td { text-align: left; padding: 10px 12px 10px 0; border-top: 1px solid var(--line); vertical-align: top; }
.doc th { font: 500 12px var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-3); }
.doc .callout { background: var(--sunken); border-radius: 10px; padding: 16px 18px; color: var(--ink-2); }

/* ---------- responsive ---------- */
@media (max-width: 920px) {
  .hero { grid-template-columns: 1fr; gap: 40px; padding-block-start: 32px; }
  .receipt { margin: 0 auto; transform: rotate(0.6deg); }
  .note { display: none; }
  .math { grid-template-columns: 1fr; gap: 40px; }
  .small-things { grid-template-columns: 1fr 1fr; }
  .small-things div { padding: 22px 18px 22px 0 !important; border-right: 0 !important; }
  .small-things div:nth-child(odd) { border-right: 1px solid var(--line) !important; }
  .small-things div:nth-child(even) { padding-left: 18px !important; }
  .steps li { grid-template-columns: 56px 1fr; }
  .steps li p { grid-column: 2; }
}
@media (max-width: 720px) {
  .top nav { display: none; }
  .top .btn { display: none; }
  section { padding: 72px 0; }
  .plans { grid-template-columns: 1fr; }
  .small-things { grid-template-columns: 1fr; }
  .small-things div { border-right: 0 !important; padding-left: 0 !important; }
}
@media (max-width: 420px) {
  .wrap { padding: 0 16px; }
  .receipt { padding-left: 18px; padding-right: 18px; }
  .people { grid-template-columns: repeat(2, 1fr); }
  .who { margin-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}