:root {
  --ink: #0f1a24;
  --ink-soft: #3d4f5f;
  --ink-muted: #5c6d7d;
  --surface: #f6f8fa;
  --surface-raised: #ffffff;
  --line: #d8e0e8;
  --accent: #1a6b5c;
  --accent-deep: #0f4a40;
  --accent-soft: #e4f2ef;
  --equity: #8b3d62;
  --transport: #2a5f8f;
  --health: #1a6b5c;
  --housing: #7d5a3c;
  --growth: #b07a14;
  --education: #4a5899;
  --shadow: 0 12px 40px rgba(15, 26, 36, 0.08);
  --radius: 12px;
  --max: 1120px;
  --font-sans: "Source Sans 3", system-ui, -apple-system, sans-serif;
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--surface);
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--accent-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--accent);
}

.container {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(246, 248, 250, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 0.9rem 0;
}

.brand {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 0.65rem;
  color: inherit;
  text-decoration: none;
}

.brand__logo {
  width: 2.65rem;
  height: 2rem;
  flex-shrink: 0;
  display: block;
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 0.12rem;
  line-height: 1.15;
}

.brand__mark {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand__dd {
  color: var(--health);
}

.brand__p1 {
  color: var(--accent-deep);
}

.brand__p2 {
  color: var(--equity);
}

.brand__tag {
  font-size: 0.72rem;
  color: var(--ink-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--accent-deep);
}

.nav__cta {
  padding: 0.55rem 1rem;
  border-radius: 999px;
  background: var(--accent-deep);
  color: #fff !important;
}

.nav__cta:hover {
  background: var(--accent);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface-raised);
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
  font: inherit;
  cursor: pointer;
}

.hero {
  padding: 4.5rem 0 3.5rem;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: start;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 1rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  font-weight: 600;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 3.35rem);
  margin: 0 0 1.25rem;
}

.lead {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 42rem;
  margin: 0 0 1.75rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.button--primary {
  background: var(--accent-deep);
  color: #fff;
}

.button--primary:hover {
  background: var(--accent);
  color: #fff;
}

.button--secondary {
  background: var(--surface-raised);
  border-color: var(--line);
  color: var(--ink);
}

.button--secondary:hover {
  border-color: var(--accent);
  color: var(--accent-deep);
}

.hero-card {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.hero-card h2 {
  font-size: 1.2rem;
  margin: 0 0 1rem;
}

.hero-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-card li {
  padding: 0.85rem 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
}

.hero-card li:first-child {
  border-top: 0;
  padding-top: 0;
}

.hero-card strong {
  display: block;
  color: var(--ink);
  margin-bottom: 0.2rem;
}

.section {
  padding: 4rem 0;
}

.section--alt {
  background: var(--surface-raised);
  border-block: 1px solid var(--line);
}

.section__header {
  max-width: 44rem;
  margin-bottom: 2.5rem;
}

.section__header p {
  color: var(--ink-soft);
  margin: 0.75rem 0 0;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.card {
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  height: 100%;
}

.card__icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.card__icon--transport {
  background: #e8f1f8;
  color: var(--transport);
}

.card__icon--health {
  background: var(--accent-soft);
  color: var(--health);
}

.card__icon--equity {
  background: #f6e8ef;
  color: var(--equity);
}

.card h3 {
  margin: 0 0 0.6rem;
  font-size: 1.2rem;
}

.card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.step {
  padding: 1.25rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
}

.step__num {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.step h3 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
}

.step p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.audience {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.audience__panel {
  padding: 1.75rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #fff 0%, #f9fbfc 100%);
}

.audience__panel h3 {
  margin-top: 0;
}

.audience__panel ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.cta-band {
  margin: 0;
  padding: 3rem;
  border-radius: calc(var(--radius) + 6px);
  background: linear-gradient(135deg, var(--accent-deep), #174f6b);
  color: #fff;
}

.cta-band h2 {
  margin-top: 0;
}

.cta-band p {
  max-width: 38rem;
  opacity: 0.92;
}

.cta-band .button--secondary {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.45);
  color: #fff;
}

.cta-band .button--secondary:hover {
  border-color: #fff;
}

.site-footer {
  padding: 2.5rem 0 3rem;
  color: var(--ink-muted);
  font-size: 0.92rem;
}

.site-footer__grid {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.site-footer a {
  color: var(--ink-soft);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

.page-hero {
  padding: 3rem 0 2rem;
}

.page-hero h1 {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
}

.prose {
  max-width: 42rem;
}

.prose p,
.prose li {
  color: var(--ink-soft);
}

.prose h2 {
  margin-top: 2rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.contact-card {
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-raised);
}

.contact-card dt {
  font-weight: 600;
  margin-top: 1rem;
}

.contact-card dt:first-child {
  margin-top: 0;
}

.contact-card dd {
  margin: 0.2rem 0 0;
  color: var(--ink-soft);
}

.form-field {
  display: grid;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.form-field label {
  font-weight: 600;
  font-size: 0.95rem;
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  background: #fff;
}

.form-field textarea {
  min-height: 8rem;
  resize: vertical;
}

.form-note {
  font-size: 0.88rem;
  color: var(--ink-muted);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.framework-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.hub-figure {
  margin: 0;
  padding: 1.5rem;
  background: var(--surface-raised);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow);
}

.hub-figure img,
.hub-figure object {
  display: block;
  width: 100%;
  height: auto;
}

.hub-figure figcaption {
  margin-top: 1rem;
  font-size: 0.92rem;
  color: var(--ink-soft);
  text-align: center;
}

.hub-links {
  display: grid;
  gap: 0.75rem;
}

.hub-links h3 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
}

.hub-links p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.layer-label {
  display: inline-block;
  margin-bottom: 0.75rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.card__icon--housing {
  background: #f3ebe3;
  color: var(--housing);
}

.card__icon--growth {
  background: #faf3e3;
  color: var(--growth);
}

.card__icon--education {
  background: #eceaf6;
  color: var(--education);
}

.proof-panel {
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--surface-raised);
}

.proof-panel--health {
  border-color: #b8d9d2;
  background: linear-gradient(180deg, #fff 0%, var(--accent-soft) 100%);
}

.proof-panel--equity {
  border-color: #e0c0d0;
  background: linear-gradient(180deg, #fff 0%, #fbf4f7 100%);
}

.proof-panel h3 {
  margin-top: 0;
}

.proof-questions {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.proof-questions li {
  margin-bottom: 0.35rem;
}

.domain-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 2rem 0;
}

.domain-meta article {
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.domain-meta h3 {
  margin: 0 0 0.4rem;
  font-size: 0.95rem;
}

.domain-meta p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.matrix-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-raised);
}

.proof-matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.proof-matrix th,
.proof-matrix td {
  padding: 0.85rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
}

.proof-matrix th {
  background: var(--surface);
  font-family: var(--font-display);
  font-weight: 600;
}

.proof-matrix tbody th {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  white-space: nowrap;
}

.proof-matrix td {
  color: var(--ink-soft);
}

.proof-matrix tr:last-child th,
.proof-matrix tr:last-child td {
  border-bottom: 0;
}

.proof-matrix .col-health {
  background: rgba(228, 242, 239, 0.45);
}

.proof-matrix .col-equity {
  background: rgba(246, 232, 239, 0.45);
}

.breadcrumb {
  font-size: 0.88rem;
  color: var(--ink-muted);
  margin-bottom: 0.75rem;
}

.breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

@media (max-width: 900px) {
  .hero__grid,
  .grid-2,
  .grid-3,
  .grid-4,
  .framework-split,
  .steps,
  .audience,
  .contact-grid,
  .domain-meta {
    grid-template-columns: 1fr;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    right: 1.25rem;
    left: 1.25rem;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: var(--surface-raised);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
  }

  .nav.is-open {
    display: flex;
  }

  .nav-toggle {
    display: inline-block;
  }

  .site-header__inner {
    position: relative;
  }
}