.nav-brand {
  color: var(--ink);
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 500;
  white-space: nowrap;
}

.nav-link,
.nav-menu summary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 6px 10px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.nav-link:hover,
.nav-menu summary:hover {
  border-color: var(--line);
  background: var(--white);
  color: var(--blue);
  text-decoration: none;
}

.nav-menu {
  position: relative;
}

.nav-menu summary {
  cursor: pointer;
  list-style: none;
}

.nav-menu summary::-webkit-details-marker {
  display: none;
}

.nav-menu summary::after {
  content: "⌄";
  margin-left: 6px;
  font-size: 12px;
}

.nav-menu[open] summary {
  border-color: var(--line-strong);
  background: var(--white);
  color: var(--blue);
}

.nav-menu[open] summary::after {
  transform: rotate(180deg);
}

.nav-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  display: grid;
  grid-template-columns: repeat(2, minmax(160px, 1fr));
  gap: 4px;
  width: min(420px, calc(100vw - 40px));
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper-soft);
  box-shadow: var(--shadow);
}

.nav-panel a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 36px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
}

.nav-panel a:hover {
  background: var(--blue-soft);
  text-decoration: none;
}

.nav-panel span {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 11px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.tagline {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.45;
  overflow-wrap: anywhere;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--paper-soft);
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
}

.button.primary {
  border-color: var(--blue);
  background: var(--blue);
  color: var(--white);
}

.button:hover {
  text-decoration: none;
}

@media (hover: hover) {
  .button:hover,
  .links a:hover,
  .filter:hover {
    transform: translateY(-1px);
  }
}
.button,
.links a,
.filter {
  transition-property: transform, background-color, border-color, color;
  transition-duration: 150ms;
  transition-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-panel {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--paper-soft);
  box-shadow: var(--shadow);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.stat {
  min-height: 92px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--white);
}

.stat strong {
  display: block;
  margin-bottom: 4px;
  color: var(--blue);
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 500;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.flow {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.flow-row {
  display: grid;
  grid-template-columns: 104px 1fr;
  align-items: center;
  gap: 10px;
}

.flow-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.flow-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.flow-dot {
  min-height: 34px;
  border: 1px solid #c9d7e6;
  border-radius: var(--radius-sm);
  background: var(--blue-soft);
}

.flow-dot.blue { background: var(--blue-soft); border-color: #c9d7e6; }
.flow-dot.teal { background: var(--teal-soft); border-color: #bddbd5; }
.flow-dot.green { background: var(--green-soft); border-color: #cadfc2; }
.flow-dot.rust { background: var(--rust-soft); border-color: #dec5b6; }
.flow-dot.plum { background: var(--plum-soft); border-color: #d8c6d4; }
.flow-dot.amber { background: var(--amber-soft); border-color: #dec99e; }

.section-num {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.section-title {
  margin: 0;
  font-size: 34px;
  line-height: 1.18;
  text-wrap: balance;
}

.section-lede {
  max-width: 780px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
  text-wrap: pretty;
}

.search {
  width: 100%;
  min-height: 42px;
  padding: 10px 12px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--white);
  color: var(--ink);
}

.filter {
  min-height: 34px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--paper-soft);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.filter[aria-pressed="true"] {
  border-color: var(--blue);
  background: var(--blue);
  color: var(--white);
}

.filter span {
  font-family: var(--mono);
}

.category h3 {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 8px;
  font-size: 25px;
  line-height: 1.2;
}

.category h3 span {
  color: var(--muted);
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 700;
}

.category-desc {
  max-width: 760px;
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 13px;
}

.card {
  display: flex;
  flex-direction: column;
  min-height: 360px;
  padding: 18px;
  border: 1px solid var(--line);
  border-top: 4px solid var(--blue);
  border-radius: var(--radius-md);
  background: var(--paper-soft);
}

.card[data-family="decision-strategy"] { border-top-color: var(--blue); }
.card[data-family="business-research"] { border-top-color: var(--teal); }
.card[data-family="learning-content"] { border-top-color: var(--rust); }
.card[data-family="engineering-governance"] { border-top-color: var(--plum); }

.card-head {
  margin-bottom: 12px;
}

.card-kicker {
  margin: 0 0 6px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.card h4 {
  margin: 0;
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.slug {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 3px 7px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
}

.badge.strong {
  background: var(--green-soft);
  color: var(--green);
}

.badge.muted {
  background: #ece8dc;
  color: var(--muted);
}

.desc {
  margin: 0 0 12px;
  color: var(--ink);
  font-size: 14px;
  text-wrap: pretty;
}

.meta-list {
  display: grid;
  gap: 8px;
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 13px;
}

.meta-list b {
  color: var(--ink);
  font-weight: 700;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.links a,
.link-disabled {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--white);
  font-size: 12px;
  font-weight: 700;
}

.link-disabled {
  color: var(--muted);
}

@media (max-width: 640px) {
  .tagline {
    font-size: 18px;
  }

  .button {
    width: 100%;
    padding-right: 10px;
    padding-left: 10px;
  }
}