/* Layout: transit-map metaphor. Each site section is a "line" with its pages as stations. */
:root {
  --paper: #f5f6f2;
  --card: #ffffff;
  --ink: #1d2826;
  --muted: #5b6763;
  --rule: #d9ddd6;
  --line-t: #0d6b63;   /* Integrated Transport line */
  --line-v: #6b4e9e;   /* Incredible or True line (jacaranda) */
  --line-a: #8a6a1f;   /* About line */
  --on-line: #ffffff;
  --line: var(--line-t);
  --f-display: "Overpass", "Helvetica Neue", Arial, sans-serif;
  --f-body: "Source Serif 4", Georgia, "Times New Roman", serif;
  --f-mono: "Overpass Mono", ui-monospace, Menlo, Consolas, monospace;
  --measure: 66ch;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #141a19; --card: #1c2422; --ink: #e6ebe8; --muted: #9aa7a2; --rule: #2e3835;
    --line-t: #3fb3a6; --line-v: #ac90dc; --line-a: #d4b25c; --on-line: #101615;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #141a19; --card: #1c2422; --ink: #e6ebe8; --muted: #9aa7a2; --rule: #2e3835;
  --line-t: #3fb3a6; --line-v: #ac90dc; --line-a: #d4b25c; --on-line: #101615;
  color-scheme: dark;
}

.sec-t { --line: var(--line-t); }
.sec-v { --line: var(--line-v); }
.sec-a { --line: var(--line-a); }

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font: 17px/1.62 var(--f-body);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--line); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--line); outline-offset: 2px; border-radius: 2px; }
img { max-width: 100%; height: auto; }
.wrap {
  max-width: 1080px; margin: 0 auto;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--card); padding: 8px 12px; z-index: 20; }

/* Header */
.site-head { border-bottom: 1px solid var(--rule); background: var(--paper); }
.site-head .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 28px; padding-block: 18px; }
.brand { font: 800 1.45rem/1 var(--f-display); letter-spacing: -0.01em; color: var(--ink); text-decoration: none; display: flex; align-items: center; gap: 10px; }
.brand .dots { display: inline-flex; gap: 4px; }
.brand .dots i { width: 10px; height: 10px; border-radius: 50%; display: block; }
.brand .dots i:nth-child(1) { background: var(--line-t); }
.brand .dots i:nth-child(2) { background: var(--line-v); }
.brand .dots i:nth-child(3) { background: var(--line-a); }
.brand small { font-weight: 600; color: var(--muted); }
.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 18px; }
.main-nav a { font: 600 0.92rem/1 var(--f-display); color: var(--ink); text-decoration: none; padding: 8px 0; display: inline-block; border-bottom: 3px solid transparent; }
.main-nav a:hover { border-color: var(--rule); }
.main-nav a[aria-current="page"], .main-nav a.on { border-color: var(--line); }

/* Section band with route-line sub navigation */
.band { background: var(--card); border-bottom: 1px solid var(--rule); }
.band .wrap { padding-block: 26px 0; }
.eyebrow { font: 700 0.74rem/1 var(--f-display); letter-spacing: 0.12em; text-transform: uppercase; color: var(--line); margin: 0 0 10px; }
.band h1 { font: 800 clamp(1.8rem, 4.5vw, 2.7rem)/1.08 var(--f-display); margin: 0 0 20px; text-wrap: balance; letter-spacing: -0.015em; }
.route { overflow-x: auto; margin: 0 -4px; padding: 0 4px; }
.route ol { list-style: none; margin: 0; padding: 0 0 22px; display: flex; min-width: max-content; position: relative; }
.route ol::before { content: ""; position: absolute; left: 7px; right: 7px; top: 7px; height: 4px; background: var(--line); border-radius: 2px; }
.route li { position: relative; padding-right: 26px; }
.route li:last-child { padding-right: 0; }
.route a { display: flex; flex-direction: column; gap: 8px; text-decoration: none; color: var(--muted); font: 600 0.84rem/1.2 var(--f-display); }
.route a::before { content: ""; width: 18px; height: 18px; border-radius: 50%; background: var(--card); border: 4px solid var(--line); position: relative; z-index: 1; }
.route a:hover { color: var(--ink); }
.route a[aria-current="page"] { color: var(--ink); }
.route a[aria-current="page"]::before { background: var(--line); }

/* Content */
main { padding-block: 40px 64px; }
.prose { max-width: var(--measure); }
.prose p { margin: 0 0 1.05em; }
.prose h2, h2 { font: 800 1.35rem/1.2 var(--f-display); margin: 2em 0 0.6em; text-wrap: balance; }
.prose h2:first-child { margin-top: 0; }
h3 { font: 700 1.05rem/1.3 var(--f-display); margin: 1.6em 0 0.5em; }
.lede { font-size: 1.18rem; line-height: 1.55; }
.prose ul { padding-left: 1.2em; }
.prose li { margin: 0.3em 0; }
.prose blockquote { margin: 1.4em 0; padding: 4px 0 4px 18px; border-left: 4px solid var(--line); font-style: italic; }
.note { font: 0.95rem/1.5 var(--f-body); color: var(--muted); }
.signoff { font: 700 1rem/1.4 var(--f-display); }
.grid2 { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 300px); gap: 48px; align-items: start; }
@media (max-width: 820px) { .grid2 { grid-template-columns: minmax(0, 1fr); gap: 32px; } }
aside.side { border-top: 4px solid var(--line); padding-top: 14px; font-size: 0.95rem; }
aside.side h2 { font-size: 1rem; margin: 0 0 10px; }
aside.side ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }

/* Checklist of concerns (aims page) */
.concerns { list-style: none; padding: 0 !important; display: grid; gap: 10px; }
.concerns li { padding: 12px 14px 12px 40px; background: var(--card); border: 1px solid var(--rule); border-radius: 4px; position: relative; margin: 0 !important; }
.concerns li::before { content: "!"; position: absolute; left: 12px; top: 12px; width: 18px; height: 18px; border-radius: 50%; background: var(--line); color: var(--on-line); font: 800 0.75rem/18px var(--f-display); text-align: center; }

/* Steps (have your say) — a real sequence */
.steps { counter-reset: s; list-style: none; padding: 0 !important; display: grid; gap: 12px; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 34px minmax(0, 1fr); gap: 12px; align-items: start; margin: 0 !important; }
.steps li::before { content: counter(s); width: 34px; height: 34px; border-radius: 50%; background: var(--line); color: var(--on-line); font: 800 1rem/34px var(--f-display); text-align: center; }

/* Resource lists */
.res-group { margin: 0 0 36px; }
.res-group > h2 { margin: 0 0 4px; padding-bottom: 8px; border-bottom: 2px solid var(--ink); }
.res-group > h3 { color: var(--line); font-size: 0.8rem; letter-spacing: 0.1em; text-transform: uppercase; margin: 22px 0 6px; }
.res { list-style: none; margin: 0; padding: 0; }
.res li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 20px; padding: 12px 0; border-bottom: 1px solid var(--rule); align-items: baseline; }
.res .t { font-weight: 600; }
.res .m { display: block; font-size: 0.92rem; color: var(--muted); }
.res a.get { font: 700 0.78rem/1 var(--f-mono); text-transform: uppercase; letter-spacing: 0.04em; text-decoration: none; border: 1.5px solid var(--line); border-radius: 3px; padding: 6px 9px; white-space: nowrap; }
.res a.get:hover { background: var(--line); color: var(--on-line); }
.badge { font: 700 0.68rem/1 var(--f-display); letter-spacing: 0.08em; text-transform: uppercase; background: var(--line); color: var(--on-line); padding: 3px 6px; border-radius: 2px; margin-left: 6px; vertical-align: 2px; }
.refs p { margin: 0 0 0.8em; }

/* Home */
.hero { padding-block: 48px 12px; }
.hero h1 { font: 800 clamp(2rem, 5.6vw, 3.4rem)/1.04 var(--f-display); margin: 0 0 18px; max-width: 18ch; letter-spacing: -0.02em; text-wrap: balance; }
.hero h1 span.t { color: var(--line-t); }
.hero h1 span.v { color: var(--line-v); }
.lines { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin: 36px 0 12px; }
@media (max-width: 720px) { .lines { grid-template-columns: minmax(0, 1fr); } }
.line-card { background: var(--card); border: 1px solid var(--rule); border-top: 6px solid var(--line); border-radius: 4px; padding: 22px 22px 18px; display: flex; flex-direction: column; gap: 12px; }
.line-card h2 { margin: 0; font-size: 1.5rem; }
.line-card h2 a { color: var(--ink); text-decoration: none; }
.line-card h2 a:hover { color: var(--line); }
.line-card p { margin: 0; }
.stops { list-style: none; margin: 4px 0 0; padding: 0 0 0 4px; border-left: 4px solid var(--line); display: grid; gap: 2px; }
.stops li { position: relative; padding: 4px 0 4px 18px; }
.stops li::before { content: ""; position: absolute; left: -10px; top: 50%; width: 10px; height: 10px; margin-top: -7px; border-radius: 50%; background: var(--card); border: 3px solid var(--line); }
.stops a { font: 600 0.95rem/1.3 var(--f-display); text-decoration: none; color: var(--ink); }
.stops a:hover { color: var(--line); }
.topics { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 16px; margin-top: 14px; }
.topic { display: flex; flex-direction: column; background: var(--card); border: 1px solid var(--rule); border-radius: 4px; text-decoration: none; color: var(--ink); overflow: hidden; }
.topic:hover { border-color: var(--line); }
.topic .thumb { aspect-ratio: 3 / 2; max-width: 100%; background: color-mix(in srgb, var(--line) 14%, var(--card)); overflow: hidden; }
.topic .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.topic .body { padding: 12px 14px 14px; display: grid; gap: 4px; }
.topic .k { font: 700 0.7rem/1 var(--f-display); letter-spacing: 0.1em; text-transform: uppercase; color: var(--line); }
.topic .h { font: 700 1rem/1.3 var(--f-display); }
.topic .d { font-size: 0.88rem; color: var(--muted); }
.noimg .thumb { display: none; }

/* Case studies */
.cases { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; margin-top: 10px; }

/* Organisations */
.orgs { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.orgs li { background: var(--card); border: 1px solid var(--rule); border-radius: 4px; padding: 14px 16px; display: grid; gap: 2px; }
.orgs .abbr { font: 800 1.1rem/1.2 var(--f-display); }
.orgs .full { font-size: 0.92rem; color: var(--muted); }
.orgs a { font: 600 0.82rem/1.3 var(--f-mono); word-break: break-all; }

/* Contact block */
.contact { background: var(--card); border: 1px solid var(--rule); border-radius: 4px; padding: 18px 20px; display: grid; gap: 6px; max-width: var(--measure); }
.contact dt { font: 700 0.74rem/1 var(--f-display); letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-top: 8px; }
.contact dd { margin: 0; }
.mono { font-family: var(--f-mono); font-size: 0.92em; }

/* Sitemap as a network map */
.netmap { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 28px; margin-top: 8px; }
@media (max-width: 820px) { .netmap { grid-template-columns: minmax(0, 1fr); } }
.netline h2 { margin: 0 0 14px; font-size: 1.15rem; display: flex; align-items: center; gap: 10px; }
.netline h2::before { content: ""; width: 26px; height: 8px; border-radius: 4px; background: var(--line); flex: none; }
.netline h2 a { color: var(--ink); text-decoration: none; }
.netline ol { list-style: none; margin: 0 0 0 9px; padding: 0; border-left: 6px solid var(--line); }
.netline li { position: relative; padding: 7px 0 7px 22px; }
.netline li::before { content: ""; position: absolute; left: -15px; top: 50%; margin-top: -9px; width: 12px; height: 12px; border-radius: 50%; background: var(--card); border: 3px solid var(--line); }
.netline li.term::before { width: 16px; height: 16px; left: -17px; margin-top: -11px; background: var(--line); }
.netline li a { font: 600 1rem/1.3 var(--f-display); text-decoration: none; color: var(--ink); }
.netline li a:hover { color: var(--line); text-decoration: underline; }
.netline li .sub { display: block; font-size: 0.86rem; color: var(--muted); font-family: var(--f-body); }
.netline ol ol { border-left: 0; margin: 4px 0 0; }
.netline ol ol li { padding: 3px 0 3px 16px; }
.netline ol ol li::before { left: -4px; width: 8px; height: 8px; margin-top: -4px; border-width: 2px; }
.hub { margin-bottom: 26px; display: flex; align-items: center; gap: 12px; font: 700 1.05rem/1.2 var(--f-display); }
.hub::before { content: ""; width: 22px; height: 22px; border-radius: 50%; border: 5px solid var(--ink); background: var(--card); }
.hub a { color: var(--ink); }

/* Footer */
.site-foot { border-top: 1px solid var(--rule); background: var(--card); font: 0.9rem/1.5 var(--f-display); color: var(--muted); }
.site-foot .wrap { padding-block: 28px; display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px 32px; }
.site-foot h2 { font: 700 0.72rem/1 var(--f-display); letter-spacing: 0.12em; text-transform: uppercase; margin: 0 0 8px; color: var(--ink); }
.site-foot p { margin: 0 0 4px; }
.site-foot a { color: var(--ink); }
.site-foot .legal { grid-column: 1 / -1; border-top: 1px solid var(--rule); padding-top: 16px; font-size: 0.82rem; }
.totop { font: 600 0.85rem/1 var(--f-display); }