:root {
  --bg: #1b1f27;
  --grid: #242a35;
  --panel: #232934;
  --panel-2: #2b3240;
  --line: #3a4352;
  --text: #e6e9ef;
  --muted: #a3acbb;
  --focus: #ffd166;
  --display: "Chakra Petch", system-ui, sans-serif;
  --body: "Atkinson Hyperlegible", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--text);
  font: 17px/1.6 var(--body);
}
a { color: inherit; text-decoration-color: var(--muted); text-underline-offset: 3px; }
a:hover { text-decoration-color: var(--text); }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; border-radius: 4px; }
[hidden] { display: none !important; }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; margin: 0; }

/* Header */
.site-head {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  padding: 16px max(16px, calc((100vw - 1160px) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(27, 31, 39, 0.92);
  position: sticky; top: 0; z-index: 5; backdrop-filter: blur(6px);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 700 22px var(--display); }
.site-nav { display: flex; gap: 6px 18px; flex-wrap: wrap; font-size: 15px; }
.site-nav a { text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; padding: 2px 0; }
.site-nav a:hover { color: var(--text); border-bottom-color: var(--cat); }

main { max-width: 1160px; margin: 0 auto; padding: 0 16px 64px; }

/* Hero */
.hero { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; padding: 56px 0 32px; }
.hero h1 { font-size: clamp(34px, 5vw, 56px); font-weight: 700; letter-spacing: -0.01em; max-width: 14em; }
.lede { color: var(--muted); font-size: 19px; max-width: 38em; margin: 18px 0 0; }
.hero-graph { width: 100%; height: auto; }
.hero-graph .gt { fill: #e6e9ef; font: 600 15px var(--display); }
.hero-graph .gt-h { fill: #a3acbb; font: 600 11px var(--body); }
.hero-graph .gt-h.dark { fill: #1b1f27; }

.finder { margin-top: 28px; max-width: 34em; }
.finder label { display: block; font: 600 15px var(--display); margin-bottom: 8px; }
.finder input {
  width: 100%; padding: 14px 16px; font: 17px var(--body); color: var(--text);
  background: var(--panel); border: 1px solid var(--line); border-radius: 10px;
}
.finder input::placeholder { color: #7d8697; }
.count { color: var(--muted); font-size: 15px; margin: 12px 0 0; }

/* Filters */
.filters { display: flex; flex-wrap: wrap; gap: 8px; padding: 8px 0 24px; }
.chip {
  font: 600 15px var(--display); color: var(--text); cursor: pointer;
  background: var(--panel); border: 1px solid var(--line); border-left: 4px solid var(--cat, var(--text));
  border-radius: 8px; padding: 8px 14px;
}
.chip[aria-pressed="true"] { background: var(--panel-2); border-color: var(--cat, var(--text)); }

/* Sponsor slot */
.sponsor-slot {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px;
  border: 1px dashed var(--line); border-radius: 12px; padding: 14px 18px; margin: 0 0 32px;
  color: var(--muted); font-size: 15px;
}
.sponsor-slot p { margin: 0; flex: 1 1 22em; }
.sponsor-tag { font: 700 13px var(--display); color: var(--text); border: 1px solid var(--line); border-radius: 6px; padding: 2px 8px; }

/* Category blocks */
.cat-block { margin: 0 0 56px; }
.cat-head { border-left: 4px solid var(--cat); padding-left: 16px; margin-bottom: 20px; }
.cat-head h2 { font-size: 30px; }
.cat-head h2 a { text-decoration: none; }
.cat-head p { color: var(--muted); margin: 8px 0 0; max-width: 46em; }

/* Nodes: Blueprint-style cards */
.node-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 22px; }
.node {
  display: flex; flex-direction: column;
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
}
.node-head { background: var(--cat); color: #14171d; padding: 10px 16px 9px; display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.node-title { font-size: 20px; font-weight: 700; }
.node-title a { text-decoration: none; }
.node-title a:hover { text-decoration: underline; text-decoration-color: #14171d; }
.node-maker { font-size: 13px; font-weight: 700; opacity: 0.8; white-space: nowrap; }
.node-body { padding: 14px 16px 4px; flex: 1; }
.pin { display: flex; gap: 10px; align-items: flex-start; margin: 0 0 10px; font-weight: 700; }
.pin-dot { flex: none; width: 12px; height: 12px; margin-top: 7px; border-radius: 50%; border: 2px solid var(--cat); background: var(--cat); }
.pin-label { color: var(--muted); font-weight: 400; }
.verdict { margin: 0 0 14px; color: #d3d8e1; }
.facts { margin: 0 0 12px; display: grid; gap: 6px; font-size: 15px; }
.facts div { display: grid; grid-template-columns: 6.5em 1fr; gap: 8px; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }
.node-foot { border-top: 1px solid var(--line); padding: 12px 16px; display: flex; flex-wrap: wrap; gap: 6px 16px; align-items: baseline; font-size: 14px; }
.visit { font: 600 15px var(--display); text-decoration: none; border-bottom: 2px solid var(--cat); }
.checked { color: var(--muted); }

.empty { color: var(--muted); padding: 24px 0; }

/* Callout */
.callout { border: 1px solid var(--line); border-left: 4px solid #3dd6d0; background: var(--panel); border-radius: 12px; padding: 24px; margin-top: 16px; }
.callout h2 { font-size: 26px; }
.callout p { color: var(--muted); max-width: 44em; }
.callout a { font: 600 16px var(--display); }

/* Inner pages */
.page-head { padding: 48px 0 28px; border-bottom: 1px solid var(--line); margin-bottom: 28px; }
.page-head h1 { font-size: clamp(30px, 4.4vw, 46px); max-width: 20em; border-left: 6px solid var(--cat, var(--text)); padding-left: 16px; }
.crumb { color: var(--muted); font-size: 15px; margin: 0 0 14px; }
.solo { max-width: 720px; }
.related { margin-top: 40px; max-width: 720px; }
.related h2 { font-size: 24px; margin-bottom: 12px; }
.related ul { list-style: none; padding: 0; margin: 0; }
.related li { padding: 10px 0; border-bottom: 1px solid var(--line); }
.related li span { color: var(--muted); display: block; font-size: 15px; }

.prose { max-width: 42em; }
.prose h2 { font-size: 24px; margin: 32px 0 8px; }
.prose p, .prose li { color: #d3d8e1; }
.prose li { margin-bottom: 8px; }
.source-line { font-size: 15px; color: var(--muted) !important; border-top: 1px solid var(--line); padding-top: 16px; margin-top: 32px; }

/* Footer */
.site-foot { border-top: 1px solid var(--line); background: var(--bg); padding: 32px max(16px, calc((100vw - 1160px) / 2)) 40px; color: var(--muted); font-size: 15px; }
.foot-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; }
.foot-grid a { display: block; margin-bottom: 6px; }
.foot-brand { font: 700 20px var(--display); color: var(--text); margin: 0 0 6px; }
.fine { margin-top: 24px; font-size: 14px; max-width: 60em; }

@media (max-width: 820px) {
  .hero { grid-template-columns: 1fr; padding-top: 32px; gap: 24px; }
  .hero-graph { max-width: 460px; }
  .node-grid { grid-template-columns: 1fr; }
  .foot-grid { grid-template-columns: 1fr; }
  .site-nav { font-size: 14px; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }
@media (max-width: 820px) { .site-head { position: static; } }

/* Newsletter signup */
.signup {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px 40px; align-items: center;
  margin-top: 56px; padding: 28px; border-radius: 14px;
  background: var(--panel); border: 1px solid var(--line); border-top: 4px solid #5cc98b;
}
.signup h2 { font-size: 26px; }
.signup p { color: var(--muted); margin: 8px 0 0; }
.signup-form label { display: block; font: 600 15px var(--display); margin-bottom: 8px; }
.signup-row { display: flex; gap: 8px; }
.signup-row input {
  flex: 1; min-width: 0; padding: 12px 14px; font: 17px var(--body); color: var(--text);
  background: var(--bg); border: 1px solid var(--line); border-radius: 10px;
}
.signup-row button {
  font: 700 16px var(--display); padding: 12px 18px; border-radius: 10px; cursor: pointer;
  background: #5cc98b; color: #14171d; border: 0;
}
.signup-row button:disabled { opacity: 0.7; cursor: wait; }
.signup-note { font-size: 14px; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
@media (max-width: 820px) {
  .signup { grid-template-columns: 1fr; padding: 20px; }
  .signup-row { flex-direction: column; }
}