:root {
  --bg: #0b1220;
  --bg-raised: #111a2c;
  --bg-raised-hover: #16223a;
  --border: #24304a;
  --border-soft: #1a2438;
  --text: #e7ecf3;
  --text-muted: #8d9bb3;
  --text-faint: #5b6a86;

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --display: "Space Grotesk", var(--sans);

  --fund: #9aa5bd;
  --l2: #4fd1c5;
  --l3: #f2a93b;
  --l4: #b18cf0;
  --app: #f1789c;
  --sec: #5b9df9;

  --radius: 3px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--l2);
  outline-offset: 2px;
}

.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */

.site-header {
  border-bottom: 1px solid var(--border-soft);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 20px;
  padding-bottom: 20px;
}

.site-mark {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
}

.site-mark span.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--l2);
  display: inline-block;
}

.site-mark small {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  color: var(--text-faint);
}

.search-box {
  position: relative;
  width: 240px;
}

.search-box input {
  width: 100%;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  padding: 8px 10px 8px 30px;
}

.search-box input::placeholder {
  color: var(--text-faint);
}

.search-box svg {
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  width: 13px;
  height: 13px;
  stroke: var(--text-faint);
}

/* ---------- Hero ---------- */

.hero {
  padding: 64px 0 48px;
  border-bottom: 1px solid var(--border-soft);
}

.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: center;
}

.hero h1 {
  font-family: var(--display);
  font-size: 40px;
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 16px;
}

.hero p.lede {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 46ch;
  margin: 0 0 28px;
}

.hero-cta {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 13px;
  padding: 11px 18px;
  border-radius: var(--radius);
  text-decoration: none;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--l2);
  color: #08201d;
  font-weight: 600;
}

.btn-primary:hover {
  background: #6fe0d5;
}

.btn-secondary {
  border-color: var(--border);
  color: var(--text-muted);
}

.btn-secondary:hover {
  border-color: var(--text-faint);
  color: var(--text);
}

.hero-art {
  width: 100%;
  height: auto;
}

/* ---------- Modules ---------- */

.modules {
  padding: 48px 0 80px;
}

.module {
  border-top: 1px solid var(--border-soft);
  padding: 28px 0;
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 28px;
}

.module:last-child {
  border-bottom: 1px solid var(--border-soft);
}

.module-head {
  border-left: 3px solid var(--module-color, var(--l2));
  padding-left: 16px;
}

.module-head h2 {
  font-family: var(--display);
  font-size: 22px;
  margin: 0 0 8px;
  line-height: 1.3;
}

.module-head p {
  font-size: 13.5px;
  color: var(--text-muted);
  margin: 0;
  max-width: 22ch;
}

.topic-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--border-soft);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.topic-row {
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 14px;
}

a.topic-row {
  text-decoration: none;
  color: var(--text);
}

a.topic-row:hover {
  background: var(--bg-raised-hover);
}

.topic-row .t-title {
  font-size: 14.5px;
}

.topic-row.is-planned .t-title {
  color: var(--text-faint);
}

.status-chip {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.03em;
  padding: 2px 7px;
  border-radius: var(--radius);
  white-space: nowrap;
}

.status-chip.published {
  color: #08201d;
  background: var(--l2);
}

.status-chip.planned {
  color: var(--text-faint);
  border: 1px solid var(--border);
}

.module[hidden],
.topic-row[hidden] {
  display: none;
}

.no-results {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-faint);
  padding: 40px 0;
  text-align: center;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 28px 0 60px;
}

.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  flex-wrap: wrap;
}

.site-footer a {
  color: var(--text-faint);
}

.site-footer a:hover {
  color: var(--text-muted);
}

/* ---------- Topic pages ---------- */

.topic-header {
  border-bottom: 1px solid var(--border-soft);
  padding: 36px 0;
}

.breadcrumb {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--text-faint);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
}

.breadcrumb:hover {
  color: var(--text-muted);
}

.topic-eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--module-color, var(--l2));
  border: 1px solid var(--module-color, var(--l2));
  border-radius: var(--radius);
  padding: 1px 6px;
  margin-bottom: 14px;
}

.topic-header h1 {
  font-family: var(--display);
  font-size: 32px;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  max-width: 22ch;
}

.topic-header .topic-dek {
  color: var(--text-muted);
  font-size: 16px;
  max-width: 60ch;
  margin: 0;
}

.topic-body {
  max-width: 720px;
  padding: 40px 0 20px;
}

.topic-body h2 {
  font-family: var(--display);
  font-size: 21px;
  margin: 40px 0 14px;
}

.topic-body h2:first-child {
  margin-top: 0;
}

.topic-body p {
  font-size: 15.5px;
  color: #cbd4e3;
  margin: 0 0 16px;
}

.topic-body ul,
.topic-body ol {
  padding-left: 22px;
  color: #cbd4e3;
  font-size: 15.5px;
}

.topic-body li {
  margin-bottom: 8px;
}

.topic-body code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
}

.diagram-block {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin: 24px 0 32px;
}

.diagram-block svg {
  width: 100%;
  height: auto;
  display: block;
}

.diagram-block figcaption {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 14px;
  text-align: center;
}

.callout {
  border-left: 3px solid var(--sec);
  background: var(--bg-raised);
  padding: 14px 18px;
  margin: 24px 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.callout p {
  margin: 0;
  color: var(--text);
  font-size: 14.5px;
}

.callout .callout-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--sec);
  display: block;
  margin-bottom: 6px;
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0 32px;
  font-size: 14px;
}

.compare-table th,
.compare-table td {
  border: 1px solid var(--border);
  padding: 10px 12px;
  text-align: left;
}

.compare-table th {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--text-muted);
  background: var(--bg-raised);
  font-weight: 500;
}

.topic-nav {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  border-top: 1px solid var(--border-soft);
  padding: 28px 0 60px;
  font-family: var(--mono);
  font-size: 13px;
}

.topic-nav a {
  text-decoration: none;
  color: var(--text-muted);
  max-width: 45%;
}

.topic-nav a:hover {
  color: var(--l2);
}

.topic-nav .nav-label {
  display: block;
  font-size: 11px;
  color: var(--text-faint);
  margin-bottom: 4px;
}

/* ---------- Responsive ---------- */

@media (max-width: 760px) {
  .hero .wrap {
    grid-template-columns: 1fr;
  }

  .hero-art {
    order: -1;
    max-width: 320px;
  }

  .module {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .site-header .wrap {
    flex-wrap: wrap;
  }

  .search-box {
    width: 100%;
    order: 3;
  }
}