:root {
  color-scheme: dark;
  --ink: #f3f0e8;
  --muted: #b9b5aa;
  --quiet: #8c8a84;
  --ground: #090b0d;
  --ground-2: #101419;
  --panel: rgba(20, 25, 31, .94);
  --panel-2: rgba(27, 34, 41, .9);
  --line: #333b43;
  --line-strong: #56616c;
  --signal: #e2b65b;
  --signal-2: #ffd98b;
  --safe: #82c9a7;
  --warning: #e7b976;
  --danger: #e08f8f;
  --info: #91b7d8;
  --shadow: 0 24px 60px rgba(0,0,0,.28);
  --radius: 1.15rem;
  --measure: 72ch;
  --shell: min(92rem, calc(100% - 2rem));
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body {
  margin: 0;
  background:
    radial-gradient(circle at 12% -10%, rgba(226,182,91,.14), transparent 30rem),
    radial-gradient(circle at 100% 10%, rgba(112,145,176,.11), transparent 34rem),
    linear-gradient(180deg, #090b0d 0%, #0d1115 48%, #080a0c 100%);
  color: var(--ink);
  font: 400 1rem/1.68 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  min-height: 100vh;
}
a { color: var(--signal-2); text-underline-offset: .2em; }
a:hover { text-decoration-thickness: .14em; }
a:focus-visible, button:focus-visible, select:focus-visible, summary:focus-visible, input:focus-visible {
  outline: .2rem solid var(--signal-2);
  outline-offset: .2rem;
}
img, svg { max-width: 100%; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; overflow-wrap: anywhere; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 1rem; top: .6rem; z-index: 1000; transform: translateY(-180%); background: var(--ink); color: #111; padding: .75rem 1rem; border-radius: .5rem; font-weight: 800; }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 0; z-index: 100; border-bottom: 1px solid rgba(255,255,255,.09); background: rgba(9,11,13,.91); backdrop-filter: blur(18px); }
.site-header__inner { width: var(--shell); margin: auto; min-height: 4.6rem; display: flex; align-items: center; justify-content: space-between; gap: 1.25rem; }
.brand { display: inline-flex; align-items: baseline; gap: .65rem; color: var(--ink); text-decoration: none; font-weight: 850; letter-spacing: -.025em; }
.brand__mark { color: var(--signal); font-family: Georgia, serif; font-size: 1.45rem; }
.brand__release { color: var(--muted); font: 650 .72rem/1 ui-monospace, monospace; letter-spacing: .12em; text-transform: uppercase; }
.primary-nav { display: flex; align-items: center; flex-wrap: wrap; gap: .15rem; }
.primary-nav a { color: var(--muted); text-decoration: none; padding: .7rem .68rem; border-radius: .55rem; font-size: .91rem; font-weight: 650; }
.primary-nav a:hover { color: var(--ink); background: rgba(255,255,255,.06); }
.primary-nav a[aria-current="page"] { color: #16130b; background: var(--signal-2); }
.reduced-mode { display: none; }
main { display: block; }
.hero { width: var(--shell); margin: 0 auto; padding: clamp(4.5rem, 9vw, 8rem) 0 3rem; display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(18rem, .72fr); gap: clamp(2rem, 6vw, 6rem); align-items: end; }
.eyebrow { margin: 0 0 1rem; color: var(--signal); font: 800 .75rem/1.3 ui-monospace, monospace; letter-spacing: .16em; text-transform: uppercase; }
h1, h2, h3 { margin-top: 0; text-wrap: balance; }
h1 { max-width: 13ch; margin-bottom: 1.35rem; font: 650 clamp(3rem, 7.2vw, 7.2rem)/.94 Georgia, "Times New Roman", serif; letter-spacing: -.055em; }
h2 { font: 650 clamp(2rem, 4vw, 3.6rem)/1.02 Georgia, serif; letter-spacing: -.035em; }
h3 { font-size: 1.18rem; line-height: 1.25; letter-spacing: -.012em; }
.lede { max-width: 66ch; margin: 0; color: #d6d2c8; font-size: clamp(1.08rem, 1.5vw, 1.27rem); }
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 1.8rem; }
.button { min-height: 2.85rem; display: inline-flex; align-items: center; justify-content: center; gap: .5rem; border: 1px solid var(--line-strong); border-radius: .68rem; padding: .72rem 1rem; color: var(--ink); background: var(--panel-2); text-decoration: none; font-weight: 780; cursor: pointer; }
.button:hover { border-color: var(--signal); background: #252117; }
.button--primary { color: #17130a; background: var(--signal-2); border-color: var(--signal-2); }
.button--primary:hover { background: #f3c96e; }
.hero__boundary { border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgba(226,182,91,.11), rgba(26,33,40,.86)); padding: 1.35rem; box-shadow: var(--shadow); }
.hero__boundary strong { display: block; color: var(--signal-2); font: 850 .75rem/1.3 ui-monospace, monospace; text-transform: uppercase; letter-spacing: .12em; margin-bottom: .8rem; }
.hero__boundary p { margin: 0; font-family: Georgia, serif; font-size: 1.18rem; line-height: 1.5; }
.journey-wrap { width: var(--shell); margin: 0 auto 4rem; }
.journey { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); border: 1px solid var(--line); border-radius: 1rem; overflow: hidden; background: rgba(12,15,18,.74); }
.journey li { position: relative; padding: 1rem 1rem 1.05rem; border-right: 1px solid var(--line); min-height: 7.2rem; }
.journey li:last-child { border-right: 0; }
.journey li[aria-current="step"] { background: rgba(226,182,91,.12); box-shadow: inset 0 .22rem var(--signal); }
.journey__index { display: block; color: var(--quiet); font: 750 .68rem/1 ui-monospace, monospace; letter-spacing: .1em; text-transform: uppercase; }
.journey strong { display: block; margin: .55rem 0 .2rem; }
.journey small { color: var(--muted); line-height: 1.35; display: block; }
.section { width: var(--shell); margin: 0 auto; padding: clamp(3rem, 6vw, 6rem) 0; border-top: 1px solid rgba(255,255,255,.08); }
.section-heading { display: grid; grid-template-columns: minmax(0, .7fr) minmax(18rem, 1fr); gap: 2rem; margin-bottom: 2rem; align-items: start; }
.section-heading p { margin-top: .25rem; max-width: var(--measure); color: var(--muted); }
.receipt-picker { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: .9rem; }
.receipt-card { display: flex; min-height: 13rem; flex-direction: column; justify-content: space-between; padding: 1.15rem; border: 1px solid var(--line); border-radius: .9rem; background: var(--panel); color: var(--ink); text-decoration: none; transition: transform .16s ease, border-color .16s ease, background .16s ease; }
.receipt-card:hover { transform: translateY(-.15rem); border-color: var(--signal); background: #191c1d; }
.receipt-card[aria-current="true"] { border-color: var(--signal-2); box-shadow: inset 0 0 0 1px var(--signal-2); background: linear-gradient(150deg, rgba(226,182,91,.12), var(--panel)); }
.receipt-card__top { display: flex; justify-content: space-between; align-items: center; gap: .6rem; }
.receipt-card__id { color: var(--muted); font: 740 .72rem/1 ui-monospace, monospace; }
.receipt-card h3 { margin: 1.2rem 0 .65rem; }
.receipt-card p { margin: 0; color: var(--muted); font-size: .93rem; }
.status { display: inline-flex; align-items: center; min-height: 1.8rem; padding: .24rem .55rem; border: 1px solid currentColor; border-radius: 999px; font: 780 .69rem/1 ui-monospace, monospace; text-transform: uppercase; letter-spacing: .06em; }
.status--accepted, .status--accepted-with-scope-limit { color: var(--safe); }
.status--partial-federation, .status--recipient-refused { color: var(--warning); }
.status--presentation-revoked, .status--expired-without-use { color: var(--info); }
.compact-picker { margin-top: 1.25rem; display: flex; gap: .65rem; align-items: end; flex-wrap: wrap; }
.field { display: grid; gap: .35rem; min-width: min(100%, 22rem); }
.field label { color: var(--muted); font-size: .82rem; font-weight: 760; }
select, input[type="search"] { width: 100%; min-height: 2.85rem; padding: .65rem .75rem; border: 1px solid var(--line-strong); border-radius: .6rem; background: #11161b; color: var(--ink); font: inherit; }
.workspace { width: var(--shell); margin: 0 auto; padding-bottom: 7rem; display: grid; grid-template-columns: minmax(13rem, .26fr) minmax(0, 1fr); gap: clamp(1.5rem,4vw,4rem); align-items: start; }
.task-rail { position: sticky; top: 6rem; border: 1px solid var(--line); border-radius: .9rem; background: rgba(15,19,23,.86); padding: .75rem; }
.task-rail strong { display: block; padding: .55rem .65rem; color: var(--muted); font: 780 .68rem/1 ui-monospace, monospace; text-transform: uppercase; letter-spacing: .12em; }
.task-rail a { display: block; color: #d8d4ca; text-decoration: none; border-radius: .55rem; padding: .62rem .65rem; font-weight: 620; font-size: .9rem; }
.task-rail a:hover { background: rgba(255,255,255,.06); color: var(--ink); }
.receipt-main { min-width: 0; }
.receipt-header { padding: clamp(1.25rem,3vw,2.2rem); border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(145deg, rgba(31,38,45,.96), rgba(17,21,25,.96)); box-shadow: var(--shadow); }
.receipt-header__meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .65rem; margin-bottom: 1rem; }
.receipt-header h2 { max-width: 21ch; margin-bottom: 1rem; }
.receipt-header__claim { max-width: var(--measure); color: #dedad1; font-size: 1.12rem; }
.lens-form { margin-top: 1.4rem; display: grid; grid-template-columns: minmax(12rem, 1fr) auto; gap: .7rem; align-items: end; max-width: 44rem; }
.fact-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: .75rem; margin: 1.4rem 0 0; }
.fact { min-width: 0; padding: .9rem; border: 1px solid var(--line); border-radius: .7rem; background: rgba(7,9,11,.42); }
.fact dt { margin: 0 0 .45rem; color: var(--quiet); font: 760 .68rem/1.3 ui-monospace, monospace; letter-spacing: .08em; text-transform: uppercase; }
.fact dd { margin: 0; font-weight: 690; overflow-wrap: anywhere; }
.lens-banner { margin-top: .85rem; padding: 1rem 1.1rem; border-left: .25rem solid var(--signal); background: rgba(226,182,91,.08); border-radius: .4rem; }
.lens-banner strong { display: block; margin-bottom: .3rem; }
.receipt-section { scroll-margin-top: 6rem; padding: 3.4rem 0; border-bottom: 1px solid rgba(255,255,255,.08); }
.receipt-section__head { max-width: var(--measure); margin-bottom: 1.25rem; }
.receipt-section__head p { color: var(--muted); }
.split { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .9rem; }
.panel { min-width: 0; padding: 1.1rem; border: 1px solid var(--line); border-radius: .85rem; background: var(--panel); }
.panel--signal { border-color: rgba(226,182,91,.55); }
.panel--safe { border-color: rgba(130,201,167,.48); }
.panel--warning { border-color: rgba(231,185,118,.58); }
.panel h3 { margin-bottom: .7rem; }
.panel p:last-child { margin-bottom: 0; }
.clean-list { margin: .4rem 0 0; padding-left: 1.25rem; }
.clean-list li + li { margin-top: .5rem; }
.clean-list--checks { list-style: none; padding: 0; }
.clean-list--checks li { position: relative; padding-left: 1.55rem; }
.clean-list--checks li::before { content: "✓"; position: absolute; left: 0; color: var(--safe); font-weight: 900; }
.binding-grid { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: .65rem; }
.binding { padding: .9rem; border: 1px solid var(--line); border-radius: .75rem; background: var(--panel); }
.binding strong { display: block; color: var(--signal-2); font: 800 .7rem/1.2 ui-monospace, monospace; text-transform: uppercase; letter-spacing: .08em; margin-bottom: .45rem; }
.binding span { color: #ddd8cf; overflow-wrap: anywhere; }
.lineage { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: .65rem; align-items: stretch; }
.lineage__node { position: relative; padding: 1rem; border: 1px solid var(--line); border-radius: .75rem; background: var(--panel); }
.lineage__node:not(:last-child)::after { content: "→"; position: absolute; right: -.62rem; top: 50%; z-index: 2; color: var(--signal); background: var(--ground); width: 1.2rem; text-align: center; transform: translateY(-50%); }
.lineage__node small { display: block; color: var(--quiet); font: 740 .67rem/1.2 ui-monospace, monospace; text-transform: uppercase; letter-spacing: .08em; }
.lineage__node strong { display: block; margin-top: .5rem; overflow-wrap: anywhere; }
.participants { display: grid; gap: .65rem; }
.participant { display: grid; grid-template-columns: minmax(10rem,1.1fr) minmax(8rem,.7fr) minmax(12rem,1.3fr); gap: .8rem; align-items: center; padding: .9rem 1rem; border: 1px solid var(--line); border-radius: .75rem; background: var(--panel); }
.participant__state { color: var(--warning); font: 760 .73rem/1.3 ui-monospace, monospace; text-transform: uppercase; letter-spacing: .06em; }
.participant p { margin: 0; color: var(--muted); font-size: .9rem; }
.space-top { margin-top: .8rem; }
.callout { padding: 1.1rem 1.2rem; border-radius: .8rem; border: 1px solid var(--line); background: rgba(15,19,23,.84); }
.callout--warning { border-left: .28rem solid var(--warning); }
.callout--safe { border-left: .28rem solid var(--safe); }
.callout strong { display: block; margin-bottom: .35rem; }
details { border: 1px solid var(--line); border-radius: .75rem; background: var(--panel); }
details + details { margin-top: .65rem; }
summary { min-height: 3rem; display: flex; align-items: center; padding: .75rem 1rem; cursor: pointer; font-weight: 780; }
details[open] summary { border-bottom: 1px solid var(--line); }
.details-body { padding: 1rem; }
pre { max-width: 100%; margin: 0; padding: 1rem; overflow: auto; border-radius: .6rem; background: #07090b; color: #d7e1d9; font: .76rem/1.55 ui-monospace, monospace; white-space: pre-wrap; overflow-wrap: anywhere; }
.machine-actions { display: flex; flex-wrap: wrap; gap: .55rem; }
.footer { border-top: 1px solid var(--line); background: #080a0c; }
.footer__inner { width: var(--shell); margin: auto; padding: 2.5rem 0 3.5rem; display: grid; grid-template-columns: 1fr auto; gap: 1rem; color: var(--muted); }
.footer p { margin: 0; }
.footer a { color: var(--muted); }

@media (max-width: 74rem) {
  .primary-nav a { padding-inline: .45rem; font-size: .84rem; }
  .receipt-picker { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .binding-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
}
@media (max-width: 58rem) {
  .site-header { position: static; }
  .site-header__inner { align-items: flex-start; flex-direction: column; padding: .85rem 0; }
  .primary-nav { width: 100%; }
  .hero { grid-template-columns: 1fr; align-items: start; }
  .section-heading { grid-template-columns: 1fr; gap: .3rem; }
  .journey { grid-template-columns: 1fr 1fr; }
  .journey li { border-bottom: 1px solid var(--line); min-height: auto; }
  .workspace { grid-template-columns: 1fr; }
  .task-rail { position: static; display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); }
  .task-rail strong { grid-column: 1/-1; }
  .fact-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .binding-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .lineage { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .lineage__node::after { display: none; }
  .participant { grid-template-columns: 1fr; }
}
@media (max-width: 40rem) {
  :root { --shell: min(100% - 1.1rem, 92rem); }
  html { scroll-padding-top: 1rem; }
  .primary-nav { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); }
  .primary-nav a { min-height: 2.8rem; display: flex; align-items: center; }
  h1 { font-size: clamp(2.65rem, 15vw, 4.7rem); max-width: 10ch; }
  .hero { padding-top: 3.2rem; }
  .journey { grid-template-columns: 1fr; }
  .journey li { border-right: 0; }
  .receipt-picker, .split, .fact-grid, .binding-grid, .lineage { grid-template-columns: 1fr; }
  .receipt-card { min-height: 11rem; }
  .task-rail { grid-template-columns: 1fr; }
  .lens-form { grid-template-columns: 1fr; }
  .button { width: 100%; }
  .compact-picker { display: grid; }
  .footer__inner { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .receipt-card:hover { transform: none; }
}
@media (forced-colors: active) {
  * { forced-color-adjust: auto; }
  .status, .receipt-card[aria-current="true"], .panel, .space-top { margin-top: .8rem; }
.callout { border-width: 2px; }
}
@media print {
  :root { color-scheme: light; }
  body { background: #fff; color: #111; font-size: 10pt; }
  .site-header, .hero__actions, .journey-wrap, #choose, .task-rail, .lens-form, .machine-actions, .footer, .reduced-mode { display: none !important; }
  .hero, .workspace { width: 100%; display: block; padding: 0; }
  .hero__boundary { box-shadow: none; background: #fff; border-color: #777; }
  h1 { font-size: 30pt; max-width: none; }
  h2 { font-size: 20pt; }
  .receipt-header, .panel, .binding, .lineage__node, .participant, details { background: #fff; color: #111; box-shadow: none; border-color: #999; break-inside: avoid; }
  .receipt-section { padding: 1.2rem 0; border-color: #bbb; }
  details > * { display: block !important; }
  details summary { border-bottom: 1px solid #999; }
  a { color: #111; text-decoration: none; }
  pre { background: #f2f2f2; color: #111; }
}