@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-dark: #0f2aa3;
  --blue-wash: #e7eafa;
  --paper: #f4f0e5;
  --paper-hi: #fbf9f2;
  --ink: #20232c;
  --muted: #555c6d;
  --rule: rgba(20, 56, 212, .16);
  --warn: #be5b36;
  --pad: clamp(18px, 3.2vw, 56px);
  --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, body { margin: 0; background: var(--paper); }
body { color: var(--blue); font: 15px/1.45 var(--sans); letter-spacing: -.01em; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
.mono { font-family: var(--mono); letter-spacing: 0; }
[hidden] { display: none !important; }

/* One screen: info left, flow right. */
.shell { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); min-height: 100vh; min-height: 100dvh; }
@media (min-width: 901px) { .shell { height: 100vh; height: 100dvh; } .flow { overflow: hidden auto; } }

/* Left */
.info { display: flex; flex-direction: column; padding: 22px var(--pad) 26px; min-width: 0; }
.bar { display: flex; align-items: center; gap: 12px; }
.brand { font-weight: 600; font-size: 19px; letter-spacing: -.04em; text-decoration: none; }
.net { font: 11px/1 var(--mono); padding: 5px 8px; border: 1px solid var(--blue); border-radius: 99px; text-transform: uppercase; letter-spacing: .04em; }
.docs { margin-left: auto; text-decoration: none; font-size: 14px; }
.docs:hover { text-decoration: underline; }

.copy { margin: auto 0; padding: 4vh 0 3vh; }
h1 { margin: 0 0 18px; font-weight: 500; letter-spacing: -.07em; line-height: .95; font-size: clamp(38px, 4.4vw, 80px); }
h1 em { font-style: italic; font-weight: 450; letter-spacing: -.06em; }
.lede { margin: 0 0 24px; max-width: 34ch; font-size: clamp(16px, 1.3vw, 20px); letter-spacing: -.025em; line-height: 1.4; }
.how { list-style: none; counter-reset: how; margin: 0; padding: 0; display: grid; gap: 9px; max-width: 52ch; color: var(--ink); font-size: 14px; }
.how li { counter-increment: how; position: relative; padding-left: 28px; }
.how li::before { content: "0" counter(how); position: absolute; left: 0; top: 0; font: 11px/1.9 var(--mono); color: var(--blue); }
.how b { color: var(--blue); font-weight: 600; }

.info-foot { display: grid; gap: 14px; }
.fine { margin: 0; font-size: 12.5px; color: var(--muted); max-width: 58ch; }
.thanks { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 22px; padding-top: 14px; border-top: 1px solid var(--rule); }
.thanks-label { font: 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.thanks img { display: block; height: 30px; width: auto; }
.thanks .oa { font: 500 17px/1 var(--serif); color: #141414; text-decoration: none; letter-spacing: -.01em; }
.thanks a:hover { opacity: .75; }
.thanks .repo { margin-left: auto; font-size: 12px; color: var(--muted); text-decoration: none; }
.lede a { text-decoration-thickness: 1px; text-underline-offset: 3px; }

/* Right */
.flow { position: relative; display: flex; align-items: center; justify-content: center; padding: 22px var(--pad); overflow: hidden; border-left: 1px solid var(--rule); }
.art { position: absolute; right: -4%; bottom: 0; height: min(94vh, 880px); width: auto; opacity: .14; pointer-events: none; user-select: none; }
.card { position: relative; width: 100%; max-width: 560px; background: rgba(251, 249, 242, .92); backdrop-filter: blur(2px);
  border: 1px solid var(--rule); border-radius: 18px; padding: 8px 20px 14px; box-shadow: 0 18px 50px -30px rgba(20, 56, 212, .45); }

.steps { list-style: none; margin: 0; padding: 0; }
.step { padding: 13px 0; border-bottom: 1px solid var(--rule); }
.step:last-child { border-bottom: 0; }
.head { display: flex; align-items: center; gap: 12px; min-height: 30px; }
.head h2 { margin: 0; font: 500 19px/1.1 var(--sans); letter-spacing: -.04em; }
.num { width: 26px; height: 26px; flex: none; border: 1px solid var(--blue); border-radius: 50%; display: grid; place-items: center; font: 11.5px var(--mono); }
.sum { margin-left: auto; font-size: 14px; color: var(--ink); text-align: right; }
.sum b { color: var(--blue); font-weight: 600; font-size: 16px; letter-spacing: -.03em; }
.sum .mono { font-size: 12px; color: var(--muted); margin-left: 6px; }
.body { padding: 10px 0 2px 38px; display: grid; gap: 8px; }
.step.done .num { background: var(--blue); color: var(--paper); }
.step.done .body { display: none; }
.step.locked { opacity: .42; }
.step.locked .body { display: none; }
.hint { margin: 0; font-size: 12.5px; color: var(--muted); }
.expiry { padding-left: 38px; margin-top: 4px; }

.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.row.end { justify-content: flex-end; }
.row > input[type="text"] { flex: 1 1 200px; min-width: 0; }

button {
  font: 500 14px var(--sans); letter-spacing: -.01em; cursor: pointer; white-space: nowrap;
  padding: 9px 16px; border-radius: 99px; border: 1px solid var(--blue); background: var(--blue); color: var(--paper);
}
button:hover:not(:disabled) { background: var(--blue-dark); }
button.ghost { background: transparent; color: var(--blue); }
button.ghost:hover:not(:disabled) { background: var(--blue-wash); }
button.small { padding: 3px 9px; font-size: 12px; }
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; }

input, textarea, select { font: 14.5px var(--sans); color: var(--ink); background: #fff; border: 1px solid var(--rule); border-radius: 9px; padding: 8px 10px; width: 100%; }
textarea { resize: vertical; }
select { width: auto; padding: 6px 8px; }
.money { display: flex; align-items: center; gap: 5px; width: 120px; }
.money b { font-weight: 500; font-size: 18px; }
.money input { font-size: 17px; }
#deposit-quote { font-size: 12px; color: var(--muted); }
.inline { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }

.tabs { margin-left: auto; display: inline-flex; border: 1px solid var(--blue); border-radius: 99px; padding: 2px; }
.tabs button { background: transparent; color: var(--blue); border: 0; padding: 4px 11px; font-size: 12.5px; }
.tabs button[aria-selected="true"] { background: var(--blue); color: var(--paper); }
.step.locked .tabs { visibility: hidden; }
.tab { display: grid; gap: 8px; }

.answer { padding: 10px 12px; border-radius: 10px; background: var(--blue-wash); display: flex; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.answer .verdict { font: 500 22px/1 var(--sans); letter-spacing: -.05em; }
.answer .meta { font: 12px var(--mono); color: var(--muted); }

.keybox { padding: 10px; border-radius: 10px; background: #fff; border: 1px solid var(--rule); display: grid; gap: 6px; }
.kv { display: grid; grid-template-columns: 62px minmax(0, 1fr) auto; gap: 8px; align-items: center; }
.kv span { font-size: 12px; color: var(--muted); }
.kv code { font: 12px var(--mono); color: var(--ink); overflow-wrap: anywhere; }
pre { margin: 0; padding: 9px; background: var(--blue); color: var(--paper); border-radius: 8px; font-size: 11px; white-space: pre-wrap; overflow-wrap: anywhere; max-height: 110px; overflow: auto; }

.status { min-height: 1.4em; margin: 10px 0 0; font-size: 12px; color: var(--muted); }
.status.error, .error { color: var(--warn); }

dialog { border: 1px solid var(--blue); border-radius: 16px; padding: 22px; 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 6px; font: 500 22px var(--sans); letter-spacing: -.04em; }
dialog input { margin: 12px 0; }

/* Narrow screens: stack, info first. */
@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .info { display: contents; }
  .bar { order: 1; padding: 18px var(--pad) 0; }
  .copy { order: 2; margin: 0; padding: 26px var(--pad) 20px; }
  .flow { order: 3; border-left: 0; padding: 0 var(--pad) 8px; overflow: visible; }
  .info-foot { order: 4; padding: 18px var(--pad) 26px; }
  .art { display: none; }
  .body, .expiry { padding-left: 0; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }