@font-face { font-family: "Geist"; src: url("/fonts/geist-sans.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Geist Mono"; src: url("/fonts/geist-mono.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Playfair Display"; src: url("/fonts/playfair-normal.woff2") format("woff2"); font-weight: 400 900; font-display: swap; }

:root {
  --blue: #1438d4;
  --blue-soft: #b8c7ff;
  --blue-wash: #e7eafa;
  --paper: #f4f0e5;
  --paper-hi: #fbf9f2;
  --ink: #20232c;
  --muted: #454c5d;
  --rule: rgba(20, 56, 212, .18);
  --warn: #be5b36;
  --margin: clamp(18px, 4vw, 80px);
  --sans: "Geist", ui-sans-serif, system-ui, sans-serif;
  --mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --serif: "Playfair Display", Georgia, serif;
}

* { box-sizing: border-box; }
html { background: var(--paper); }
body {
  margin: 0; background: var(--paper); color: var(--blue);
  font: 16px/1.5 var(--sans); letter-spacing: -.01em;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.mono { font-family: var(--mono); letter-spacing: 0; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
[hidden] { display: none !important; }

/* Bar */
.bar {
  display: flex; align-items: center; gap: 14px;
  padding: 22px var(--margin);
}
.brand { font-weight: 600; font-size: 19px; letter-spacing: -.04em; text-decoration: none; }
.net {
  font: 12px/1 var(--mono); padding: 6px 9px; border: 1px solid var(--blue);
  border-radius: 99px; text-transform: uppercase; letter-spacing: .04em;
}
.bar nav { margin-left: auto; }
.bar nav a { text-decoration: none; font-size: 15px; }
.bar nav a:hover { text-decoration: underline; }

/* Hero */
.hero {
  position: relative; display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  align-items: center; gap: 24px; padding: 2vh var(--margin) 6vh; min-height: min(86vh, 980px);
}
.hero h1 {
  margin: 0 0 26px; font-weight: 500; letter-spacing: -.078em; line-height: .92;
  font-size: clamp(56px, 8vw, 148px);
}
.hero h1 em { font-style: italic; font-weight: 450; letter-spacing: -.065em; white-space: nowrap; }
.lede { max-width: 30ch; margin: 0 0 32px; font-size: clamp(17px, 1.45vw, 23px); letter-spacing: -.03em; color: var(--blue); }
.cta {
  display: inline-block; padding: 14px 24px; border-radius: 99px; background: var(--blue); color: var(--paper);
  text-decoration: none; font-weight: 500;
}
.cta:hover { background: #0f2aa3; }
.hero-art { margin: 0; justify-self: center; width: 100%; max-width: 560px; }
.hero-art img { display: block; width: 100%; height: auto; }

/* App */
.app { padding: 0 var(--margin) 8vh; max-width: 980px; margin: 0 auto; }
.steps { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--rule); }
.step { display: grid; grid-template-columns: 72px minmax(0, 1fr); gap: 16px; padding: 32px 0; border-bottom: 1px solid var(--rule); }
.step.done .num { background: var(--blue); color: var(--paper); }
.step.locked { opacity: .45; }
.num {
  width: 44px; height: 44px; border: 1px solid var(--blue); border-radius: 50%;
  display: grid; place-items: center; font: 13px var(--mono);
}
.step h2 { margin: 6px 0 10px; font: 500 28px/1.1 var(--sans); letter-spacing: -.05em; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

button {
  font: 500 15px var(--sans); letter-spacing: -.01em; cursor: pointer;
  padding: 12px 20px; border-radius: 99px; border: 1px solid var(--blue);
  background: var(--blue); color: var(--paper);
}
button:hover:not(:disabled) { background: #0f2aa3; }
button.ghost { background: transparent; color: var(--blue); }
button.ghost:hover:not(:disabled) { background: var(--blue-wash); }
button.small { padding: 4px 10px; font-size: 13px; }
button:disabled { opacity: .4; cursor: not-allowed; }
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, a:focus-visible {
  outline: 2px solid var(--blue); outline-offset: 2px;
}

.field { display: grid; gap: 6px; margin: 0 0 14px; max-width: 560px; }
.field > span { font-size: 13px; color: var(--muted); }
input, textarea, select {
  font: 16px var(--sans); color: var(--ink); background: var(--paper-hi);
  border: 1px solid var(--rule); border-radius: 10px; padding: 11px 12px; width: 100%;
}
textarea { resize: vertical; }
.money { display: flex; align-items: center; gap: 6px; max-width: 220px; }
.money b { font-weight: 500; font-size: 22px; }
.money input { font-size: 22px; }
.note { font-size: 14px; color: var(--muted); max-width: 60ch; margin: 0 0 16px; }

.balance { margin: 0; font: 500 44px/1 var(--sans); letter-spacing: -.06em; display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.balance small { font-size: 14px; color: var(--muted); letter-spacing: 0; }

.tabs { display: inline-flex; border: 1px solid var(--blue); border-radius: 99px; padding: 3px; margin: 0 0 18px; }
.tabs button { background: transparent; color: var(--blue); border: 0; padding: 7px 16px; }
.tabs button[aria-selected="true"] { background: var(--blue); color: var(--paper); }

.answer {
  margin-top: 18px; padding: 16px 18px; border-radius: 12px; background: var(--paper-hi); border: 1px solid var(--rule);
  display: flex; gap: 16px; align-items: baseline; flex-wrap: wrap;
}
.answer .verdict { font: 500 30px/1 var(--sans); letter-spacing: -.05em; }
.answer .meta { font: 13px var(--mono); color: var(--muted); }

.keybox { margin-top: 18px; padding: 16px; border-radius: 12px; background: var(--paper-hi); border: 1px solid var(--rule); display: grid; gap: 10px; }
.kv { display: grid; grid-template-columns: 90px minmax(0, 1fr) auto; gap: 10px; align-items: center; }
.kv span { font-size: 13px; color: var(--muted); }
.kv code { font: 13px var(--mono); color: var(--ink); overflow-wrap: anywhere; }
pre { margin: 0; padding: 12px; background: var(--blue); color: var(--paper); border-radius: 10px; font-size: 12px; overflow-x: auto; white-space: pre-wrap; overflow-wrap: anywhere; }

.status { min-height: 1.5em; margin: 18px 0 0; font-size: 13px; color: var(--muted); }
.status.error, .error { color: var(--warn); }

/* How */
.how { padding: 6vh var(--margin) 8vh; max-width: 980px; margin: 0 auto; border-top: 1px solid var(--rule); }
.how h2 { font: 500 clamp(30px, 3vw, 44px)/1 var(--serif); letter-spacing: -.02em; margin: 0 0 22px; }
.how ol { margin: 0 0 26px; padding-left: 1.2em; display: grid; gap: 12px; max-width: 64ch; color: var(--ink); }
.how b { color: var(--blue); font-weight: 600; }

.foot { display: flex; justify-content: space-between; padding: 26px var(--margin); font-size: 14px; border-top: 1px solid var(--rule); }

dialog { border: 1px solid var(--blue); border-radius: 16px; padding: 24px; max-width: min(420px, calc(100vw - 32px)); background: var(--paper); color: var(--blue); }
dialog::backdrop { background: rgba(20, 56, 212, .18); backdrop-filter: blur(2px); }
dialog h2 { margin: 0 0 8px; font: 500 24px var(--sans); letter-spacing: -.04em; }
dialog input { margin: 10px 0 14px; }
dialog .row { justify-content: flex-end; }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; min-height: 0; padding-top: 0; }
  .hero-art { order: -1; max-width: 300px; }
  .step { grid-template-columns: 1fr; gap: 6px; padding: 26px 0; }
  .num { width: 36px; height: 36px; font-size: 12px; }
  .balance { font-size: 36px; }
  .kv { grid-template-columns: 1fr auto; }
  .kv span { grid-column: 1 / -1; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }