:root {
  --bg: #f3efe4;
  --bg-alt: #e7efe7;
  --surface: rgba(255, 251, 243, 0.84);
  --surface-strong: #fffaf1;
  --surface-dark: #15392f;
  --text: #163229;
  --muted: #52675f;
  --line: rgba(22, 50, 41, 0.12);
  --accent: #c86a2d;
  --accent-soft: rgba(200, 106, 45, 0.14);
  --green: #2f7d62;
  --green-soft: rgba(47, 125, 98, 0.12);
  --shadow: 0 28px 60px rgba(20, 40, 33, 0.1);
  --radius: 28px;
  --radius-sm: 18px;
  --container: min(1180px, calc(100vw - 2rem));
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: "IBM Plex Sans", "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(200, 106, 45, 0.15), transparent 28%),
    radial-gradient(circle at top right, rgba(47, 125, 98, 0.16), transparent 30%),
    linear-gradient(180deg, #f6f0e1 0%, #eef3e8 52%, #f8f5ee 100%);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

main,
.site-header__inner,
.site-footer__inner,
.page-section,
.hero {
  width: var(--container);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(246, 240, 225, 0.76);
  border-bottom: 1px solid rgba(22, 50, 41, 0.08);
}

.site-header__inner,
.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 0.2rem;
}

.brand__eyebrow {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
}

.brand__name {
  font-size: 1rem;
  font-weight: 800;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.55);
  padding: 0.7rem 1rem;
  font: inherit;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.site-nav a {
  padding: 0.7rem 0.95rem;
  border-radius: 999px;
  color: var(--muted);
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
  transform: translateY(-1px);
}

.hero {
  padding: 4.5rem 0 1.5rem;
  display: grid;
  grid-template-columns: 1.2fr 0.85fr;
  gap: 1.25rem;
  align-items: stretch;
}

.hero__panel,
.hero__visual,
.content-card,
.metric-card,
.lab-card,
.academy-card,
.contact-card,
.standards-card,
.field-card,
.article-card {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}

.hero__panel {
  padding: 3.2rem;
  position: relative;
  overflow: hidden;
}

.hero__panel::after {
  content: "";
  position: absolute;
  inset: auto -4rem -5rem auto;
  width: 15rem;
  height: 15rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 106, 45, 0.16), transparent 68%);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.82rem;
  font-weight: 800;
  color: var(--accent);
}

.page-title,
.hero h1,
.section-heading h2,
.content-card h2,
.content-card h3,
.article-card h3,
.lab-card h2,
.academy-card h3,
.contact-card h3,
.field-card h3,
.standards-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1.08;
}

.hero h1 {
  font-size: clamp(2.9rem, 6vw, 5.5rem);
  margin: 1rem 0 1.25rem;
}

.hero p,
.lead,
.content-card p,
.article-card p,
.academy-card p,
.contact-card p,
.field-card p,
.standards-card p,
.list-intro {
  color: var(--muted);
  line-height: 1.7;
  font-size: 1.04rem;
}

.hero__actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.95rem 1.35rem;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid transparent;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--surface-dark);
  color: #f8f3e8;
  box-shadow: 0 18px 36px rgba(21, 57, 47, 0.22);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.74);
  border-color: rgba(22, 50, 41, 0.12);
}

.hero__visual {
  padding: 1.5rem;
  display: grid;
  gap: 1rem;
  align-content: start;
}

.visual-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(243, 239, 228, 0.88));
  border-radius: 22px;
  padding: 1rem;
  border: 1px solid rgba(22, 50, 41, 0.08);
}

.visual-card__label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.8rem;
  font-size: 0.92rem;
  color: var(--muted);
}

.visual-card__label strong {
  color: var(--text);
}

.page-section {
  padding: 1.25rem 0 3rem;
}

.section-heading {
  margin-bottom: 1.25rem;
}

.section-heading h2,
.page-title {
  font-size: clamp(2rem, 3vw, 3.2rem);
  margin: 0.35rem 0 0.8rem;
}

.grid-2,
.grid-3,
.card-grid {
  display: grid;
  gap: 1rem;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3,
.card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.content-card,
.metric-card,
.lab-card,
.academy-card,
.contact-card,
.standards-card,
.field-card,
.article-card {
  padding: 1.6rem;
}

.content-card h3,
.article-card h3,
.metric-card h3,
.lab-card h2,
.academy-card h3,
.contact-card h3,
.field-card h3,
.standards-card h3 {
  margin: 0 0 0.9rem;
  font-size: 1.55rem;
}

.protocol-library,
.article-series {
  scroll-margin-top: 6rem;
}

.protocol-library__heading,
.article-series__heading {
  max-width: 920px;
}

.protocol-stack {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.protocol-stack span {
  display: flex;
  align-items: center;
  min-height: 4.2rem;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(22, 50, 41, 0.1);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.66);
  color: var(--surface-dark);
  font-weight: 800;
  line-height: 1.35;
}

.protocol-grid,
.protocol-replacement,
.protocol-steps {
  margin-bottom: 1rem;
}

.protocol-steps {
  display: grid;
}

.routing-grid .metric-card p {
  margin-bottom: 0;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 1rem;
}

.article-card {
  grid-column: span 3;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.article-card--feature {
  grid-column: span 6;
}

.article-card h3 {
  margin: 0.2rem 0 0.25rem;
}

.article-card p {
  margin: 0;
}

.article-card__close {
  margin-top: auto;
  padding-top: 0.75rem;
  color: var(--text);
  font-weight: 800;
}

.alliance-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0.2rem 0 0.4rem;
}

.alliance-stack span {
  display: inline-flex;
  align-items: center;
  min-height: 2.35rem;
  padding: 0.5rem 0.78rem;
  border: 1px solid rgba(22, 50, 41, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--surface-dark);
  font-size: 0.88rem;
  font-weight: 800;
}

.metric-card__value {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0;
  font-size: 2.7rem;
  color: var(--surface-dark);
  margin: 0;
}

.label-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: #8b4f22;
  font-weight: 700;
  font-size: 0.83rem;
}

ul.clean-list,
ol.clean-list {
  padding-left: 1.15rem;
  margin: 0.75rem 0 0;
  color: var(--muted);
}

ul.clean-list li,
ol.clean-list li {
  margin-bottom: 0.7rem;
  line-height: 1.6;
}

.callout {
  padding: 1.15rem 1.25rem;
  border-left: 4px solid var(--accent);
  background: linear-gradient(135deg, rgba(200, 106, 45, 0.12), rgba(255, 255, 255, 0.6));
  border-radius: 0 20px 20px 0;
  color: var(--text);
  font-weight: 700;
}

.comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.comparison__card {
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(22, 50, 41, 0.08);
  border-radius: 22px;
}

.comparison__card h3 {
  margin-top: 0;
}

.comparison__meta {
  font-size: 0.92rem;
  color: var(--muted);
}

.lab-layout {
  display: grid;
  grid-template-columns: 1fr 0.95fr;
  gap: 1rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.45rem;
}

.field label {
  font-weight: 700;
  color: var(--text);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 1px solid rgba(22, 50, 41, 0.14);
  background: rgba(255, 255, 255, 0.9);
  border-radius: 16px;
  padding: 0.9rem 1rem;
  font: inherit;
  color: var(--text);
}

.field textarea {
  min-height: 130px;
  resize: vertical;
}

.results {
  display: grid;
  gap: 0.9rem;
}

.result-box {
  border-radius: 22px;
  padding: 1.1rem 1.2rem;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(22, 50, 41, 0.08);
}

.result-box strong {
  display: block;
  font-size: 0.88rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.result-box span {
  display: block;
  margin-top: 0.45rem;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0;
  font-size: 2rem;
}

.fine-print {
  font-size: 0.88rem;
  color: var(--muted);
}

.academy-card,
.contact-card,
.standards-card,
.field-card {
  position: relative;
  overflow: hidden;
}

.academy-card::after,
.contact-card::after,
.standards-card::after,
.field-card::after {
  content: "";
  position: absolute;
  inset: auto auto -4rem -2rem;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 125, 98, 0.09), transparent 68%);
}

.split-band {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
}

.quote-band {
  padding: 2rem;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(21, 57, 47, 0.96), rgba(47, 125, 98, 0.9));
  color: #f7f2e7;
  box-shadow: var(--shadow);
}

.quote-band p {
  color: rgba(247, 242, 231, 0.82);
}

.mini-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1rem;
}

.mini-metrics div {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 18px;
  padding: 0.9rem;
}

.mini-metrics strong {
  display: block;
  font-size: 1.4rem;
  font-family: var(--font-display);
  font-weight: 700;
}

.site-footer {
  padding: 0.5rem 0 2rem;
}

.site-footer__links {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
}

.module-nav {
  width: var(--container);
  margin: 1rem auto 0;
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
  padding: 0.65rem;
  border: 1px solid rgba(22, 50, 41, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.42);
}

.module-nav a {
  padding: 0.65rem 0.9rem;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 800;
  font-size: 0.9rem;
}

.module-nav a:hover,
.module-nav a[aria-current="page"] {
  background: var(--surface-dark);
  color: #f8f3e8;
}

.hero--ledger {
  padding-top: 2.75rem;
}

.ledger-visual {
  align-content: stretch;
}

.ledger-flow {
  display: grid;
  gap: 0.75rem;
}

.ledger-flow span {
  display: flex;
  align-items: center;
  min-height: 3rem;
  padding: 0.85rem 1rem;
  border: 1px solid rgba(22, 50, 41, 0.08);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--text);
  font-weight: 800;
}

.ledger-toolbar {
  display: grid;
  grid-template-columns: 1.25fr repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.field span {
  font-weight: 700;
}

.table-shell {
  overflow-x: auto;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.ledger-table {
  width: 100%;
  min-width: 920px;
  border-collapse: collapse;
}

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

.ledger-table th {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.5);
}

.ledger-table td strong,
.ledger-table td span {
  display: block;
}

.ledger-table td span {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.ledger-table tr.is-hidden {
  display: none;
}

.table-shell .fine-print {
  margin: 1rem;
}

.table-shell--flat {
  box-shadow: none;
  background: rgba(255, 255, 255, 0.42);
}

.data-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  max-width: 100%;
  border-radius: 999px;
  padding: 0.36rem 0.62rem;
  font-size: 0.78rem;
  font-weight: 800;
  line-height: 1.2;
}

.badge--public {
  background: rgba(47, 125, 98, 0.14);
  color: #1f6049;
}

.badge--calculated {
  background: rgba(31, 93, 160, 0.13);
  color: #214f83;
}

.badge--scenario {
  background: rgba(200, 106, 45, 0.15);
  color: #8b4f22;
}

.badge--incomplete {
  background: rgba(82, 103, 95, 0.13);
  color: #3f524b;
}

.unit-card {
  display: grid;
  gap: 0.75rem;
}

.score-ring {
  --score: 0;
  width: 10.5rem;
  aspect-ratio: 1;
  border-radius: 50%;
  display: grid;
  place-items: center;
  justify-self: start;
  padding: 1.15rem;
  background:
    radial-gradient(circle closest-side, var(--surface-strong) 74%, transparent 75%),
    conic-gradient(var(--green) calc(var(--score) * 1%), rgba(22, 50, 41, 0.12) 0);
  text-align: center;
}

.score-ring strong,
.score-ring span {
  display: block;
}

.score-ring strong {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.7rem;
  line-height: 1;
}

.score-ring span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.profile-list {
  display: grid;
  gap: 0.55rem;
  margin: 0;
}

.profile-list div {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 0.75rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--line);
}

.profile-list dt {
  color: var(--muted);
  font-weight: 800;
}

.profile-list dd {
  margin: 0;
}

.range-field {
  display: grid;
  grid-template-columns: 1fr minmax(8rem, 42%) 3rem;
  align-items: center;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
  font-weight: 800;
}

.range-field input {
  width: 100%;
  accent-color: var(--green);
}

.range-field output {
  justify-self: end;
  color: var(--surface-dark);
}

.result-box--large {
  margin-top: 1rem;
}

.result-box--large span {
  font-size: clamp(2.4rem, 7vw, 5rem);
}

.energy-results {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field--wide {
  grid-column: 1 / -1;
}

.field input[type="range"] {
  padding: 0.9rem 0;
  accent-color: var(--green);
}

.map-layout {
  display: grid;
  grid-template-columns: 0.38fr 1fr;
  gap: 1rem;
  align-items: stretch;
}

.map-sidebar {
  align-self: stretch;
}

.layer-list {
  display: grid;
  gap: 0.75rem;
}

.layer-list label {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.72rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.62);
  font-weight: 800;
}

.layer-list input {
  accent-color: var(--green);
}

.map-panel,
.report-preview {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.map-panel {
  overflow: hidden;
  min-height: 560px;
}

.water-map {
  min-height: 560px;
  height: 100%;
  z-index: 1;
}

.map-fallback {
  display: none;
  padding: 1.6rem;
}

.map-panel.is-fallback .water-map {
  display: none;
}

.map-panel.is-fallback .map-fallback {
  display: block;
}

.report-preview {
  padding: 1.6rem;
}

.report-preview h2,
.report-preview h3 {
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 0.55rem;
}

.report-preview h3 {
  margin-top: 1.2rem;
}

.report-meta {
  color: var(--muted);
  font-weight: 800;
}

.source-card {
  display: grid;
  gap: 0.65rem;
}

.source-link {
  display: inline-flex;
  justify-content: center;
  width: fit-content;
  padding: 0.72rem 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid var(--line);
  color: var(--surface-dark);
  font-weight: 800;
}

.source-link--inline {
  margin-top: 0.6rem;
  padding: 0.46rem 0.7rem;
  font-size: 0.82rem;
}

.research-table {
  margin-bottom: 1rem;
}

.research-table h3 {
  padding: 1rem 1rem 0;
  font-family: var(--font-display);
  font-weight: 700;
}

.opportunity-card {
  display: grid;
  gap: 0.85rem;
}

.score-bar {
  position: relative;
  height: 1.1rem;
  border-radius: 999px;
  background: rgba(22, 50, 41, 0.12);
  margin-top: 0.85rem;
}

.score-bar::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: calc(var(--score) * 1%);
  background: linear-gradient(90deg, var(--green), var(--accent));
  border-radius: inherit;
}

.score-bar span {
  position: absolute;
  inset: -0.2rem 0 auto auto;
  transform: translateY(-100%);
  font-weight: 800;
  color: var(--surface-dark);
}


#concepts,
#calculator,
#field,
#ledger {
  scroll-margin-top: 6rem;
}

.toolkit-jump {
  margin-top: 1.25rem;
}

.toolkit-ledger {
  margin-top: 1rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 500ms ease, transform 500ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero,
  .grid-3,
  .card-grid,
  .grid-2,
  .lab-layout,
  .split-band,
  .comparison,
  .mini-metrics,
  .ledger-toolbar,
  .map-layout,
  .energy-results,
  .protocol-stack,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .article-card,
  .article-card--feature {
    grid-column: auto;
  }

  .hero__panel {
    padding: 2rem;
  }
}

@media (max-width: 760px) {
  .site-header__inner {
    align-items: flex-start;
  }

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

  .site-nav {
    display: none;
    width: 100%;
    padding-top: 0.75rem;
  }

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

  .form-grid {
    grid-template-columns: 1fr;
  }

  .module-nav {
    border-radius: 24px;
  }

  .module-nav a {
    flex: 1 1 auto;
    text-align: center;
  }

  .range-field {
    grid-template-columns: 1fr;
  }

  .range-field output {
    justify-self: start;
  }

  .profile-list div {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .hero {
    padding-top: 2.5rem;
  }

  .hero h1 {
    font-size: 2.8rem;
  }
}