/* Editorial fintech system: thin display type, navy ink, one indigo action, gradient mesh hero.
   Tokens adapted from a Stripe-inspired DESIGN.md (awesome-design-md); no brand assets used. */
:root {
  color-scheme: light;
  --canvas: #ffffff;
  --canvas-soft: #f6f9fc;
  --cream: #f5e9d4;
  --cream-ink: #3b2f1c;
  --ink: #0d253d;
  --ink-2: #273951;
  --mute: #64748d;
  --hairline: #e3e8ee;
  --primary: #533afd;
  --primary-deep: #4434d4;
  --primary-soft-bg: #ecebff;
  --navy: #1c1e54;
  --on-navy: #ffffff;
  --on-navy-mute: #b9b9f9;
  --s1: #533afd;
  --s2: #ea2261;
  --s3: #e8890c;
  --grid: #e3e8ee;
  --axis: #c9d3df;
  --external: #8a97ab;
  --mesh-opacity: 1;
  --shadow-1: 0 1px 3px rgba(0, 55, 112, 0.08);
  --shadow-2: 0 8px 24px rgba(0, 55, 112, 0.08), 0 2px 6px rgba(0, 55, 112, 0.04);
  --code-bg: #0d253d;
  --code-ink: #e3e8ee;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --canvas: #0a1322;
    --canvas-soft: #0f1b2e;
    --cream: #2a2418;
    --cream-ink: #f1e6d2;
    --ink: #e8eef6;
    --ink-2: #c4d0de;
    --mute: #8a9ab0;
    --hairline: #1f2d44;
    --primary: #8174ff;
    --primary-deep: #9b91ff;
    --primary-soft-bg: #1d2150;
    --navy: #161a46;
    --s1: #8174ff;
    --s2: #f0457c;
    --s3: #d47a06;
    --grid: #1c2a40;
    --axis: #2b3b55;
    --external: #5f6e86;
    --mesh-opacity: 0.32;
    --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-2: 0 8px 24px rgba(0, 0, 0, 0.35);
    --code-bg: #060d18;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --canvas: #0a1322;
  --canvas-soft: #0f1b2e;
  --cream: #2a2418;
  --cream-ink: #f1e6d2;
  --ink: #e8eef6;
  --ink-2: #c4d0de;
  --mute: #8a9ab0;
  --hairline: #1f2d44;
  --primary: #8174ff;
  --primary-deep: #9b91ff;
  --primary-soft-bg: #1d2150;
  --navy: #161a46;
  --s1: #8174ff;
  --s2: #f0457c;
  --s3: #d47a06;
  --grid: #1c2a40;
  --axis: #2b3b55;
  --external: #5f6e86;
  --mesh-opacity: 0.32;
  --shadow-1: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-2: 0 8px 24px rgba(0, 0, 0, 0.35);
  --code-bg: #060d18;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--canvas);
  color: var(--ink);
  font-family: "Inter", "SF Pro Display", system-ui, -apple-system, sans-serif;
  font-weight: 350;
  font-size: 16px;
  line-height: 1.55;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
strong, b { font-weight: 550; }
.num, td.n, .kpi-v, .tab { font-feature-settings: "tnum", "ss01"; font-variant-numeric: tabular-nums; }
code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.9em; }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 24px; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 8px; z-index: 20; background: var(--canvas); padding: 8px 12px; border-radius: 8px; }

/* ---------- navigation ---------- */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--canvas) 82%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid color-mix(in srgb, var(--hairline) 70%, transparent);
}
.nav .wrap { display: flex; align-items: center; gap: 24px; height: 60px; }
.wordmark { font-weight: 500; color: var(--ink); letter-spacing: -0.2px; white-space: nowrap; }
.wordmark span { color: var(--mute); font-weight: 350; }
.nav ul { min-width: 0; list-style: none; margin: 0; padding: 0; display: flex; gap: 20px; overflow-x: auto; scrollbar-width: none; flex: 1; }
.nav ul::-webkit-scrollbar { display: none; }
.nav li a { color: var(--ink-2); font-size: 14px; white-space: nowrap; }
.nav li a:hover { color: var(--ink); text-decoration: none; }

.pill {
  display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
  padding: 8px 16px; border-radius: 9999px; font-size: 15px; font-weight: 450; line-height: 1;
  border: 1px solid var(--primary); color: var(--primary); background: transparent;
}
.pill:hover { text-decoration: none; background: var(--primary-soft-bg); }
.pill.solid { background: var(--primary); color: #fff; }
.pill.solid:hover { background: var(--primary-deep); }
.pill.quiet { border-color: var(--hairline); color: var(--ink-2); background: var(--canvas); }

/* ---------- hero with gradient mesh ---------- */
.hero { position: relative; overflow: hidden; padding: 72px 0 64px; }
.mesh {
  position: absolute; inset: -120px -10% auto -10%; height: 640px; z-index: 0; pointer-events: none;
  opacity: var(--mesh-opacity);
  -webkit-mask-image: linear-gradient(to bottom, #000 45%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 45%, transparent 100%);
}
.mesh {
  background:
    radial-gradient(38% 46% at 10% 38%, #f5e9d4 0%, rgba(245, 233, 212, 0) 70%),
    radial-gradient(30% 40% at 34% 22%, rgba(255, 179, 122, 0.75) 0%, rgba(255, 179, 122, 0) 70%),
    radial-gradient(34% 44% at 57% 40%, rgba(185, 185, 249, 0.9) 0%, rgba(185, 185, 249, 0) 70%),
    radial-gradient(30% 42% at 76% 20%, rgba(83, 58, 253, 0.55) 0%, rgba(83, 58, 253, 0) 70%),
    radial-gradient(28% 40% at 94% 42%, rgba(234, 34, 97, 0.45) 0%, rgba(234, 34, 97, 0) 70%),
    radial-gradient(26% 30% at 84% 64%, rgba(249, 107, 238, 0.3) 0%, rgba(249, 107, 238, 0) 70%);
}
.hero .wrap { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); gap: 48px; align-items: center; }
.tag {
  display: inline-block; padding: 5px 10px; border-radius: 9999px; font-size: 12px; font-weight: 450; letter-spacing: 0.2px;
  background: color-mix(in srgb, var(--canvas) 70%, transparent); color: var(--primary-deep); border: 1px solid color-mix(in srgb, var(--primary) 25%, transparent);
}
h1 {
  font-weight: 300; font-size: clamp(38px, 5.6vw, 64px); line-height: 1.03; letter-spacing: -0.025em;
  margin: 18px 0 20px; color: var(--ink); text-wrap: balance;
}
.lead { font-size: 19px; line-height: 1.5; color: var(--ink-2); max-width: 600px; margin: 0 0 18px; }
.byline { color: var(--mute); font-size: 14px; margin: 0 0 28px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* navy dashboard card */
.panel {
  background: var(--navy); color: var(--on-navy); border-radius: 16px; padding: 24px;
  box-shadow: 0 30px 60px -20px rgba(28, 30, 84, 0.45), 0 8px 24px rgba(0, 55, 112, 0.12);
}
.panel-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 18px; }
.panel-head .t { font-size: 14px; font-weight: 450; }
.panel-head .s { font-size: 12px; color: var(--on-navy-mute); }
.kpis { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: rgba(255, 255, 255, 0.10); border-radius: 10px; overflow: hidden; }
.kpi { background: var(--navy); padding: 14px 14px 12px; }
.kpi-v { font-size: 28px; font-weight: 300; letter-spacing: -0.5px; line-height: 1.05; }
.kpi-l { font-size: 12.5px; color: var(--on-navy-mute); margin-top: 4px; line-height: 1.35; }
.spark { margin-top: 18px; }
.spark svg { display: block; width: 100%; height: 64px; }
.spark p { margin: 6px 0 0; font-size: 12px; color: var(--on-navy-mute); }

.note-strip { border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); background: var(--canvas-soft); }
.note-strip p { margin: 0; padding: 16px 0; font-size: 14px; color: var(--ink-2); max-width: 900px; }

/* ---------- sections ---------- */
.band { padding: 88px 0; }
.band.soft { background: var(--canvas-soft); }
.sec { display: grid; grid-template-columns: 200px minmax(0, 1fr); gap: 48px; }
.rail { position: relative; }
.rail-inner { position: sticky; top: 92px; }
.rail .no { font-weight: 300; font-size: 56px; line-height: 1; letter-spacing: -2px; color: var(--primary); font-feature-settings: "tnum"; }
.rail .phase { margin-top: 10px; font-size: 12px; letter-spacing: 0.8px; text-transform: uppercase; color: var(--mute); }
h2 { font-weight: 300; font-size: clamp(28px, 3.4vw, 40px); line-height: 1.12; letter-spacing: -0.02em; margin: 0 0 18px; text-wrap: balance; }
h3 { font-weight: 450; font-size: 18px; letter-spacing: -0.1px; margin: 40px 0 10px; }
p { max-width: 720px; margin: 0 0 14px; }
.intro { font-size: 18px; color: var(--ink-2); }
.small { font-size: 14px; color: var(--mute); }
ul.plain, ol.plain { padding-left: 20px; max-width: 720px; }
ul.plain li, ol.plain li { margin-bottom: 8px; }

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-top: 24px; }
.card {
  background: var(--canvas); border: 1px solid var(--hairline); border-radius: 12px; padding: 24px;
  box-shadow: var(--shadow-1); min-width: 0;
}
.band.soft .card { background: var(--canvas); }
.card h4 { margin: 0 0 4px; font-size: 15px; font-weight: 500; }
.card .cap { margin: 0 0 14px; font-size: 13.5px; color: var(--mute); max-width: none; }
.card.wide { margin-top: 24px; }
.chart { position: relative; height: 300px; }
.chart.tall { height: 340px; }
.chart.short { height: 220px; }

.cream { background: var(--cream); color: var(--cream-ink); border-radius: 12px; padding: 32px; margin-top: 28px; }
.cream h3 { margin-top: 0; }
.cream p, .cream li { color: var(--cream-ink); }

.feature {
  background: var(--navy); color: var(--on-navy); border-radius: 12px; padding: 28px 32px; margin: 24px 0 8px;
}
.feature .k { font-size: 12px; letter-spacing: 0.8px; text-transform: uppercase; color: var(--on-navy-mute); }
.feature .h { font-weight: 300; font-size: 26px; letter-spacing: -0.3px; margin: 6px 0 8px; }
.feature p { color: #dcdcfb; margin: 0; }

/* tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--hairline); border-radius: 12px; background: var(--canvas); margin: 16px 0 8px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--hairline); vertical-align: top; }
th { font-size: 12px; font-weight: 500; letter-spacing: 0.3px; color: var(--mute); text-transform: uppercase; background: var(--canvas-soft); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.n, th.n { text-align: right; white-space: nowrap; }
.ok { color: #0e8a4a; font-weight: 500; }
.sig { color: var(--s2); font-weight: 500; }
details.data { margin-top: 12px; font-size: 14px; }
details.data summary { cursor: pointer; color: var(--mute); }

pre {
  background: var(--code-bg); color: var(--code-ink); border-radius: 12px; padding: 20px; overflow-x: auto;
  font-size: 13px; line-height: 1.6; box-shadow: var(--shadow-2); margin: 16px 0;
}

/* process timeline */
.flow { position: relative; margin: 28px 0 16px; border-top: 1px solid var(--hairline); }
.flow::before { content: ""; position: absolute; left: 7px; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg, var(--primary), var(--s2)); opacity: 0.45; }
.node {
  position: relative; display: grid; grid-template-columns: 34px minmax(0, 1.5fr) minmax(0, 1fr) minmax(0, 1fr);
  align-items: baseline; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--hairline);
}
.node .dot { width: 16px; height: 16px; border-radius: 50%; background: var(--canvas-soft); border: 2px solid var(--primary); position: relative; top: 3px; z-index: 1; }
.node.ext .dot { border-style: dashed; border-color: var(--external); }
.node .t { font-weight: 500; font-size: 15.5px; line-height: 1.3; }
.node .i { font-size: 13px; color: var(--mute); }
.node .m { font-size: 14px; color: var(--ink-2); }
.node .m .lbl { display: block; font-size: 11px; letter-spacing: 0.6px; text-transform: uppercase; color: var(--mute); }
.node .m b { font-weight: 500; color: var(--ink); }
.node .m.span2 { grid-column: span 2; }
.node.ext .t { color: var(--ink-2); }

/* value-stream ribbon */
.ribbon { margin: 8px 0 4px; }
.ribbon svg { display: block; width: 100%; overflow: visible; }
.legend { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 13px; color: var(--ink-2); margin-top: 14px; }
.legend i { display: inline-block; width: 12px; height: 12px; border-radius: 3px; vertical-align: -1px; margin-right: 6px; }

/* queue boards */
.board td.alert { color: var(--s2); font-weight: 500; }
.board tr.hl td { font-weight: 550; color: var(--ink); background: var(--primary-soft-bg); }
.board th, .board td { padding: 9px 12px; }

footer { border-top: 1px solid var(--hairline); padding: 40px 0 56px; color: var(--mute); font-size: 13.5px; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }

@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .sec { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .rail-inner { position: static; display: flex; align-items: baseline; gap: 14px; }
  .rail .no { font-size: 40px; }
  .rail .phase { margin-top: 0; }
  .grid-2 { grid-template-columns: minmax(0, 1fr); }
  .node { grid-template-columns: 28px minmax(0, 1fr) minmax(0, 1fr); row-gap: 6px; }
  .node .dot { grid-row: 1; grid-column: 1; }
  .node > div:nth-child(2) { grid-row: 1; grid-column: 2 / span 2; }
  .node .m { grid-row: 2; grid-column: 2; }
  .node .m:last-child { grid-column: 3; }
  .node .m.span2 { grid-column: 2 / span 2; }
  .band { padding: 64px 0; }
  .nav .pill { display: none; }
}
@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .hero { padding: 48px 0 40px; }
  .lead { font-size: 17px; }
  .card { padding: 18px; }
  .cream, .feature { padding: 22px; }
  .chart { height: 260px; }
  .kpi-v { font-size: 24px; }
}
@media print {
  .nav, .mesh, .actions { display: none; }
  .band { padding: 32px 0; }
}