:root {
  --paper: #F2F4F3;
  --paper-2: #E7ECEA;
  --white: #FFFFFF;
  --ink: #172026;
  --ink-2: #26343C;
  --muted: #56656B;
  --rule: #C9D1CF;
  --ok: #1D7A5F;
  --ok-soft: #D5EADF;
  --ok-text: #135441;
  --lag: #B86E0C;
  --lag-soft: #F6E7CF;
  --lag-text: #7A4808;
  --display: "Bricolage Grotesque", system-ui, sans-serif;
  --text: "Instrument Sans", system-ui, sans-serif;
  --code: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 17px/1.6 var(--text);
}
a { color: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--ok); outline-offset: 3px; border-radius: 4px;
}
img, svg { max-width: 100%; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.top { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 0; }
.brand { display: flex; align-items: center; gap: 10px; font: 700 19px/1 var(--display); text-decoration: none; white-space: nowrap; }
.brand svg { flex: none; }
.top nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 6px 22px; font-size: 15px; }
.top nav a { text-decoration: none; color: var(--muted); }
.top nav a:hover, .top nav a[aria-current="page"] { color: var(--ink); }
.top nav a[aria-current="page"] { font-weight: 600; }

/* ---------- Type ---------- */
h1 {
  font: 700 clamp(38px, 5.4vw, 64px)/1.03 var(--display);
  letter-spacing: -0.02em;
  margin: 0 0 22px;
}
h2 { font: 700 clamp(28px, 3.4vw, 36px)/1.1 var(--display); letter-spacing: -0.01em; margin: 0 0 12px; }
h3 { font: 700 22px/1.2 var(--display); margin: 0 0 8px; }
p { margin: 0 0 14px; }
.lede { font-size: 19px; color: var(--muted); max-width: 52ch; margin: 0 0 30px; }
.intro { color: var(--muted); max-width: 62ch; margin: 0 0 36px; }
.measure { max-width: 66ch; }

/* ---------- Buttons ---------- */
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 8px;
  font: 600 15px/1 var(--text); text-decoration: none;
  border: 1.5px solid var(--ink);
}
.btn.solid { background: var(--ink); color: var(--paper); }
.btn.solid:hover { background: var(--ink-2); }
.btn.line:hover { background: var(--paper-2); }
.btn svg { flex: none; }

/* ---------- Status pills ---------- */
.status { display: inline-block; font-size: 13px; font-weight: 600; padding: 3px 10px; border-radius: 999px; margin-bottom: 14px; }
.status.dev { background: var(--lag-soft); color: var(--lag-text); }
.status.live { background: var(--ok-soft); color: var(--ok-text); }

/* ---------- Hero (home) ---------- */
.hero { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; padding: 56px 0 88px; }
.hero h1 { max-width: 13ch; }

.diagram { width: 100%; height: auto; display: block; }
.diagram .node rect { fill: var(--white); stroke: var(--ink); stroke-width: 1.5; }
.diagram .node text { font: 600 14px var(--text); fill: var(--ink); }
.diagram .node .sub { font: 400 12px var(--text); fill: var(--muted); }
.diagram .edge { stroke: var(--ok); stroke-width: 2.5; fill: none; }
.diagram .edge.lagging { stroke: var(--lag); stroke-dasharray: 6 6; animation: flow 1.2s linear infinite; }
.diagram .tag { font: 500 12px var(--text); }
.diagram .tag.ok { fill: var(--ok); }
.diagram .tag.lag { fill: var(--lag); }
.diagram .watch { fill: none; stroke: var(--lag); stroke-width: 1.5; }
@keyframes flow { to { stroke-dashoffset: -12; } }
.caption { font-size: 14px; color: var(--muted); margin-top: 10px; }

/* ---------- Page header (inner pages) ---------- */
.page-head { padding: 48px 0 64px; display: grid; grid-template-columns: 1.2fr 1fr; gap: 56px; align-items: end; }
.page-head h1 { max-width: 15ch; }
.at-a-glance { margin: 0; border: 1px solid var(--rule); border-radius: 10px; background: var(--white); }
.at-a-glance div { display: grid; grid-template-columns: 120px 1fr; gap: 12px; padding: 12px 16px; border-top: 1px solid var(--rule); font-size: 15px; }
.at-a-glance div:first-child { border-top: 0; }
.at-a-glance dt { color: var(--muted); }
.at-a-glance dd { margin: 0; }

/* ---------- Sections ---------- */
section.block { border-top: 1.5px solid var(--ink); padding: 56px 0 72px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.split.wide-left { grid-template-columns: 1.2fr 1fr; }

/* project rows on home */
.project { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; padding: 36px 0; border-top: 1px solid var(--rule); }
.project:first-of-type { border-top: 0; padding-top: 0; }
.project h3 { font-size: 26px; margin-bottom: 6px; }
.project p { max-width: 52ch; }
.more { font-weight: 600; text-decoration-thickness: 1.5px; text-underline-offset: 3px; }

/* list with label + description rows */
.rows { list-style: none; padding: 0; margin: 0; border: 1px solid var(--rule); border-radius: 10px; background: var(--white); }
.rows li { display: grid; grid-template-columns: 160px 1fr; gap: 16px; padding: 12px 16px; border-top: 1px solid var(--rule); font-size: 15px; }
.rows li:first-child { border-top: 0; }
.rows b { font-weight: 600; }
.rows span { color: var(--muted); }

/* outcomes: what an organisation gets */
.outcomes { display: grid; grid-template-columns: 1fr 1fr; gap: 0 48px; margin: 0; padding: 0; list-style: none; }
.outcomes li { border-top: 1px solid var(--rule); padding: 20px 0 22px; }
.outcomes h3 { font-size: 20px; margin-bottom: 6px; }
.outcomes p { color: var(--muted); margin: 0; max-width: 48ch; }

/* steps: a real sequence */
.steps { list-style: none; counter-reset: step; margin: 0; padding: 0; display: grid; gap: 0; }
.steps > li { counter-increment: step; display: grid; grid-template-columns: 56px 1fr; gap: 20px; padding: 24px 0; border-top: 1px solid var(--rule); }
.steps > li::before {
  content: counter(step);
  width: 40px; height: 40px; border-radius: 50%;
  border: 1.5px solid var(--ink); display: grid; place-items: center;
  font: 700 17px/1 var(--display);
}
.steps h3 { font-size: 20px; margin-bottom: 6px; }
.steps p { color: var(--muted); max-width: 60ch; }
.steps pre { margin-top: 14px; }

/* code */
pre { margin: 0; background: var(--ink); color: #DDE5E2; border-radius: 10px; padding: 18px 22px; overflow-x: auto; font: 400 14px/1.7 var(--code); }
pre .c { color: #8FA39C; }
pre .k { color: #8FD3B6; }
pre .s { color: #E8C48A; }
.code-note { font-size: 14px; color: var(--muted); margin: 8px 0 0; }
code { font: 400 0.92em var(--code); background: var(--paper-2); padding: 1px 6px; border-radius: 4px; }

/* topics */
.topics { display: flex; flex-wrap: wrap; gap: 8px; align-content: flex-start; }
.topics span { border: 1px solid var(--ink); border-radius: 999px; padding: 6px 14px; font-size: 15px; background: var(--white); }

/* use-case table */
.table-wrap { overflow-x: auto; border: 1px solid var(--rule); border-radius: 10px; background: var(--white); }
table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 620px; }
th, td { text-align: left; padding: 12px 16px; border-top: 1px solid var(--rule); vertical-align: top; }
thead th { border-top: 0; font-weight: 600; background: var(--paper-2); }
td:first-child { font-weight: 600; width: 24%; }
td { color: var(--ink); }

/* free & open pledge */
.pledge { background: var(--ink); color: var(--paper); border-radius: 14px; padding: 40px; display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; }
.pledge h2 { color: var(--paper); }
.pledge ul { margin: 0; padding: 0; list-style: none; }
.pledge li { padding: 12px 0; border-top: 1px solid #34444C; }
.pledge li:first-child { border-top: 0; padding-top: 0; }
.pledge li b { color: #8FD3B6; font-weight: 600; }

/* FAQ */
.faq { border-top: 1px solid var(--rule); }
.faq details { border-bottom: 1px solid var(--rule); }
.faq summary { cursor: pointer; list-style: none; padding: 18px 36px 18px 0; position: relative; font-weight: 600; font-size: 17px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 14px; font: 400 24px/1 var(--display); color: var(--muted); }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { color: var(--muted); max-width: 70ch; margin: 0 0 18px; }

/* facts on home about */
.facts { margin: 0; display: grid; gap: 14px; }
.facts div { display: grid; grid-template-columns: 130px 1fr; gap: 12px; border-top: 1px solid var(--rule); padding-top: 12px; }
.facts dt { color: var(--muted); font-size: 15px; }
.facts dd { margin: 0; }

/* contact band */
.contact { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; border: 1.5px solid var(--ink); border-radius: 14px; padding: 32px 36px; background: var(--white); }
.contact h2 { font-size: 28px; margin-bottom: 6px; }
.contact p { color: var(--muted); margin: 0; max-width: 54ch; }

/* footer */
footer { border-top: 1.5px solid var(--ink); padding: 28px 0 40px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 16px; font-size: 15px; color: var(--muted); margin-top: 72px; }
footer nav { display: flex; flex-wrap: wrap; gap: 20px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero, .project, .split, .split.wide-left, .page-head, .pledge { grid-template-columns: 1fr; gap: 28px; }
  .outcomes { grid-template-columns: 1fr; }
  .hero { padding: 32px 0 64px; }
  .page-head { padding: 32px 0 48px; }
  .pledge { padding: 28px; }
}
@media (max-width: 600px) {
  .wrap { padding: 0 16px; }
  .top { flex-direction: column; align-items: flex-start; }
  .top nav { justify-content: flex-start; }
  .rows li, .facts div, .at-a-glance div { grid-template-columns: 1fr; gap: 2px; }
  .steps > li { grid-template-columns: 1fr; gap: 10px; }
  .contact { padding: 24px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .diagram .edge.lagging { animation: none; }
}

/* let grid children shrink so code blocks and tables scroll inside instead of widening the page */
.hero > *, .page-head > *, .split > *, .project > *, .steps > li > *, .pledge > * { min-width: 0; }

/* architecture: wide diagram on desktop, stacked on phones */
.arch-tall { display: none; max-width: 420px; }
@media (max-width: 700px) {
  .arch-wide { display: none; }
  .arch-tall { display: block; }
}