:root {
  color-scheme: light;
  --ink: #080807;
  --charcoal: #14110e;
  --soft-black: #1b1711;
  --gold: #d5a54a;
  --gold-deep: #a77423;
  --gold-pale: #f4dfaa;
  --ivory: #fcfaf4;
  --paper: #f6f1e7;
  --line: #d8cec0;
  --text: #2a2825;
  --muted: #686057;
  --navy: #08233f;
  --navy-2: #0e355c;
  --blue: #2a6792;
  --white-blue: #f6fbff;
  --green: #144738;
  --clay: #8d4935;
  --shadow: 0 22px 60px rgba(18, 13, 8, 0.14);
  --container: 1220px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--ivory);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Arial, sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
}

sup {
  font-size: 0.55em;
  line-height: 0;
}

.page-shell {
  width: min(var(--container), calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(9, 8, 7, 0.92);
  border-bottom: 1px solid rgba(213, 165, 74, 0.32);
  backdrop-filter: blur(18px);
}

.nav-shell {
  width: min(1320px, calc(100% - 40px));
  min-height: 76px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 230px;
  text-decoration: none;
}

.brand-mark {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(213, 165, 74, 0.9);
  border-radius: 50%;
  color: var(--gold-pale);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.3rem;
  line-height: 1;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.brand-text {
  display: grid;
  gap: 1px;
}

.brand-text strong {
  color: #fff8e7;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
  font-weight: 700;
}

.brand-text em {
  color: var(--gold);
  font-size: 0.76rem;
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
}

.site-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 13px;
  border-radius: var(--radius);
  color: rgba(255, 248, 231, 0.82);
  font-size: 0.95rem;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--gold-pale);
  background: rgba(213, 165, 74, 0.12);
}

.site-nav .nav-cta {
  margin-left: 6px;
  background: var(--gold);
  color: #1c1205;
  font-weight: 800;
}

.site-nav .nav-cta:hover {
  background: var(--gold-pale);
  color: #1c1205;
}

.nav-toggle {
  width: 46px;
  height: 46px;
  display: none;
  place-items: center;
  border: 1px solid rgba(213, 165, 74, 0.5);
  border-radius: var(--radius);
  background: transparent;
  color: var(--gold-pale);
}

.nav-toggle svg,
.button svg,
.text-link svg,
.check-list svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.hero {
  position: relative;
  isolation: isolate;
  min-height: 72svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--ink);
  color: #fffaf0;
  padding: 92px 0 76px;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.62;
  filter: saturate(0.9) contrast(1.1);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(8, 8, 7, 0.98) 0%, rgba(8, 8, 7, 0.72) 44%, rgba(8, 8, 7, 0.34) 100%),
    linear-gradient(180deg, rgba(8, 8, 7, 0.18), rgba(8, 8, 7, 0.78));
}

.hero-content {
  max-width: 860px;
}

.eyebrow,
.section-kicker,
.breadcrumb,
.label {
  margin: 0 0 14px;
  color: var(--gold-deep);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero .eyebrow,
.section-kicker.light {
  color: var(--gold-pale);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 700;
  line-height: 1.04;
  text-wrap: balance;
  hyphens: none;
}

h1 {
  max-width: 900px;
  margin-bottom: 22px;
  color: #fffdf6;
  font-size: 5.75rem;
}

h2 {
  margin-bottom: 18px;
  color: #17130d;
  font-size: 3.2rem;
}

h3 {
  margin-bottom: 10px;
  color: #14110d;
  font-size: 1.22rem;
  line-height: 1.25;
  text-wrap: balance;
  hyphens: none;
}

.hero-lede,
.subhero p,
.section-heading p,
.origin-grid p {
  max-width: 760px;
  color: var(--muted);
  font-size: 1.12rem;
}

.hero-lede {
  color: rgba(255, 248, 231, 0.88);
  font-size: 1.3rem;
}

.formula-statement {
  width: fit-content;
  max-width: 100%;
  margin: 28px 0;
  padding: 17px 0;
  border-top: 1px solid rgba(213, 165, 74, 0.55);
  border-bottom: 1px solid rgba(213, 165, 74, 0.55);
  color: var(--gold-pale);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.55rem;
  line-height: 1.35;
}

.formula-statement.dark {
  color: var(--navy);
  border-color: rgba(8, 35, 63, 0.24);
}

.principle-line {
  width: fit-content;
  max-width: 100%;
  margin: 26px 0 0;
  padding: 13px 16px;
  border-left: 3px solid var(--gold);
  background: rgba(246, 251, 255, 0.09);
  color: var(--gold-pale) !important;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.18rem !important;
  line-height: 1.35;
}

.hero-actions,
.document-section .button,
.resource-feature .button {
  margin-top: 26px;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-weight: 850;
  text-decoration: none;
  white-space: nowrap;
}

.button.primary {
  background: var(--gold);
  color: #1b1206;
}

.button.secondary {
  background: var(--green);
  color: #fffaf0;
}

.button.ghost {
  border-color: rgba(244, 223, 170, 0.5);
  color: var(--gold-pale);
  background: rgba(255, 255, 255, 0.05);
}

.button.light {
  background: var(--white-blue);
  color: var(--navy);
}

.button:hover,
.text-link:hover {
  transform: translateY(-1px);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--green);
  font-weight: 850;
  text-decoration: none;
}

.origin-strip {
  background: var(--green);
  color: #fffaf0;
  padding: 34px 0;
}

.origin-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.75fr) minmax(0, 1.25fr);
  gap: 42px;
  align-items: center;
}

.origin-grid h2 {
  margin-bottom: 0;
  color: #fffaf0;
  font-size: 2rem;
}

.origin-grid p {
  margin-bottom: 0;
  color: rgba(255, 250, 240, 0.82);
}

.section {
  padding: 96px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 36px;
}

.section-heading.wide {
  max-width: 920px;
}

.dark-system {
  background:
    linear-gradient(90deg, rgba(213, 165, 74, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, var(--ink), var(--soft-black));
  background-size: 92px 92px, auto;
  color: #fffaf0;
}

.dark-system h2,
.dark-system h3,
.dark-system .section-kicker {
  color: var(--gold-pale);
}

.dark-system p {
  color: rgba(255, 250, 240, 0.84);
}

.system-chain {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.system-chain article,
.volume-card,
.role-grid article,
.application-grid article,
.resources-grid article,
.map-branches article,
.contact-panel,
.contact-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.64);
  box-shadow: var(--shadow);
}

.system-chain article {
  min-height: 260px;
  padding: 26px;
  background: rgba(255, 255, 255, 0.055);
  border-color: rgba(213, 165, 74, 0.25);
}

.system-chain span {
  display: inline-flex;
  margin-bottom: 42px;
  color: var(--gold);
  font-weight: 900;
}

.system-chain p {
  margin-bottom: 0;
}

.formula-layout,
.blueprint-layout,
.pathway-layout,
.document-grid,
.subhero-layout,
.sequence-layout,
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 56px;
  align-items: center;
}

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

.variable-grid article {
  min-height: 112px;
  padding: 20px;
  border-left: 4px solid var(--gold);
  background: #fffdf8;
  box-shadow: 0 12px 34px rgba(18, 13, 8, 0.08);
}

.variable-grid strong {
  display: block;
  color: #15120e;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.38rem;
}

.variable-grid span {
  color: var(--muted);
  font-weight: 750;
}

.blueprint-mode {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: linear-gradient(135deg, var(--navy), var(--navy-2));
  color: var(--white-blue);
}

.blueprint-mode::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: url("assets/blueprint-light-structure.png");
  background-position: center;
  background-size: cover;
  opacity: 0.34;
  mix-blend-mode: screen;
}

.blueprint-mode::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 78% 18%, rgba(244, 223, 170, 0.17), transparent 26%),
    linear-gradient(90deg, rgba(8, 35, 63, 0.95), rgba(8, 35, 63, 0.76) 52%, rgba(8, 35, 63, 0.88));
}

.blueprint-mode .page-shell {
  position: relative;
  z-index: 1;
}

.blueprint-mode.no-top {
  padding-top: 78px;
}

.blueprint-mode h2,
.blueprint-mode h3 {
  color: #fff;
}

.blueprint-mode p {
  color: rgba(246, 251, 255, 0.9);
}

.blueprint-layout.reverse {
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
}

.document-stack {
  margin: 0;
  padding: 18px;
  border: 1px solid rgba(246, 251, 255, 0.42);
  border-radius: var(--radius);
  background: rgba(246, 251, 255, 0.14);
}

.document-stack img,
.subhero-figure img,
.document-grid figure img {
  width: 100%;
  border-radius: var(--radius);
  border: 1px solid rgba(246, 251, 255, 0.18);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

.document-stack img,
.document-grid figure img {
  background: #020405;
  filter: brightness(1.03) contrast(1.04);
}

.document-stack figcaption {
  margin-top: 14px;
  color: rgba(246, 251, 255, 0.88);
  font-size: 0.94rem;
}

.volume-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.volume-card {
  min-height: 260px;
  padding: 28px;
}

.volume-card h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.55rem;
}

.volume-card em {
  display: block;
  margin-top: 24px;
  color: var(--gold-deep);
  font-style: normal;
  font-weight: 850;
}

.volume-card.inverse {
  background: rgba(255, 255, 255, 0.055);
  border-color: rgba(213, 165, 74, 0.22);
  box-shadow: none;
}

.volume-card.inverse .label,
.volume-card.inverse em {
  color: var(--gold-pale);
}

.pathway-section {
  background: var(--paper);
}

.pathway-layout {
  grid-template-columns: minmax(240px, 0.7fr) minmax(0, 1.3fr);
  align-items: start;
}

.pathway-list {
  display: grid;
  gap: 12px;
}

.pathway-list a {
  display: grid;
  grid-template-columns: 96px minmax(0, 0.7fr) minmax(0, 1.1fr);
  gap: 18px;
  align-items: center;
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fffdf8;
  text-decoration: none;
}

.pathway-list span {
  color: var(--gold-deep);
  font-weight: 900;
}

.pathway-list strong {
  color: #17130d;
}

.pathway-list em {
  color: var(--muted);
  font-style: normal;
}

.subhero {
  padding: 84px 0 78px;
  background:
    linear-gradient(90deg, rgba(213, 165, 74, 0.12) 1px, transparent 1px),
    linear-gradient(180deg, var(--ink), #211a12);
  background-size: 84px 84px, auto;
  color: #fffaf0;
}

.subhero h1 {
  margin-bottom: 18px;
  font-size: 4.15rem;
}

.subhero p {
  color: rgba(255, 250, 240, 0.78);
}

.breadcrumb {
  color: rgba(244, 223, 170, 0.78);
}

.breadcrumb a {
  text-decoration: none;
}

.subhero-figure {
  margin: 0;
  max-width: 420px;
  justify-self: end;
}

.formula-hero {
  background:
    linear-gradient(90deg, rgba(213, 165, 74, 0.13) 1px, transparent 1px),
    linear-gradient(135deg, #fbfaf6, #efe4ce);
  background-size: 84px 84px, auto;
  color: var(--text);
}

.formula-hero h1 {
  color: var(--ink);
}

.formula-hero p {
  color: var(--muted);
}

.blueprint-subhero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    linear-gradient(135deg, var(--navy), #0b3b62);
}

.blueprint-subhero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: url("assets/blueprint-light-structure.png");
  background-position: center;
  background-size: cover;
  opacity: 0.28;
  mix-blend-mode: screen;
}

.blueprint-subhero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 82% 8%, rgba(244, 223, 170, 0.2), transparent 27%),
    linear-gradient(90deg, rgba(8, 35, 63, 0.96), rgba(8, 35, 63, 0.72) 56%, rgba(8, 35, 63, 0.9));
}

.blueprint-subhero .page-shell {
  position: relative;
  z-index: 1;
}

.theory-subhero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background:
    linear-gradient(135deg, var(--ink), #102b43 58%, var(--navy));
}

.theory-subhero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: url("assets/blueprint-light-structure.png");
  background-position: center;
  background-size: cover;
  opacity: 0.18;
  mix-blend-mode: screen;
}

.theory-subhero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(circle at 80% 18%, rgba(244, 223, 170, 0.19), transparent 26%),
    linear-gradient(90deg, rgba(8, 8, 7, 0.92), rgba(8, 35, 63, 0.74) 58%, rgba(8, 35, 63, 0.9));
}

.theory-subhero .page-shell {
  position: relative;
  z-index: 1;
}

.theory-figure {
  max-width: 360px;
}

.theory-figure img {
  border: 1px solid rgba(244, 223, 170, 0.3);
}

.formula-room .section-heading {
  margin-bottom: 28px;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.role-grid article {
  min-height: 250px;
  padding: 28px;
}

.role-grid span {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  margin-bottom: 28px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.45rem;
}

.sequence-layout {
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
}

.sequence-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 12px;
}

.sequence-list li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 52px minmax(0, 0.82fr) minmax(0, 1fr);
  gap: 16px;
  align-items: center;
  padding: 16px;
  border: 1px solid rgba(213, 165, 74, 0.22);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
}

.sequence-list li::before {
  content: counter(step, decimal-leading-zero);
  color: var(--gold-pale);
  font-weight: 900;
}

.sequence-list strong {
  color: #fffaf0;
}

.sequence-list span {
  color: rgba(255, 250, 240, 0.72);
}

.formula-application {
  background: #fffdf8;
}

.diagram-gallery {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.diagram-card {
  display: grid;
  grid-template-rows: 220px 1fr;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fffdf8;
  box-shadow: var(--shadow);
}

.diagram-card.featured {
  grid-column: span 2;
}

.diagram-card img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 16px;
  background:
    linear-gradient(90deg, rgba(42, 103, 146, 0.08) 1px, transparent 1px),
    linear-gradient(180deg, rgba(42, 103, 146, 0.08) 1px, transparent 1px),
    #f8fbff;
  background-size: 24px 24px;
}

.diagram-card.featured img {
  background: #071c35;
}

.diagram-card div {
  padding: 22px;
}

.diagram-card p {
  margin-bottom: 0;
}

.theory-cycle {
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  gap: 42px;
  align-items: start;
}

.cycle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
}

.cycle-grid article {
  min-height: 250px;
  padding: 22px;
  border: 1px solid rgba(213, 165, 74, 0.22);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
}

.cycle-grid span {
  display: inline-flex;
  margin-bottom: 42px;
  color: var(--gold);
  font-weight: 900;
}

.cycle-grid p {
  margin-bottom: 0;
}

.cycle-grid h3 {
  font-size: 1.12rem;
  word-break: normal;
  overflow-wrap: normal;
  hyphens: none;
}

.theory-scale {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  gap: 48px;
  align-items: center;
}

.scale-images {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.scale-images figure {
  margin: 0;
  padding: 14px;
  border: 1px solid rgba(246, 251, 255, 0.3);
  border-radius: var(--radius);
  background: rgba(246, 251, 255, 0.1);
}

.scale-images img {
  width: 100%;
  border-radius: var(--radius);
}

.scale-images figcaption {
  margin-top: 10px;
  color: rgba(246, 251, 255, 0.76);
  font-size: 0.9rem;
}

.theory-note {
  background: var(--paper);
}

.note-panel {
  max-width: 900px;
}

.easter-section {
  padding-top: 42px;
  background:
    linear-gradient(180deg, var(--paper), var(--ivory));
}

.stewardship-easter {
  max-width: 820px;
  margin: 0 auto;
  padding: 30px;
  border: 1px solid rgba(213, 165, 74, 0.3);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.78);
  box-shadow: 0 18px 42px rgba(18, 13, 8, 0.08);
}

.stewardship-easter p:not(.section-kicker) {
  margin-bottom: 12px;
  color: #3a342e;
  font-size: 1.04rem;
}

.stewardship-easter p:last-child {
  margin-bottom: 0;
  color: var(--green);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.16rem;
}

.application-grid,
.resources-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.application-grid article,
.resources-grid article {
  min-height: 230px;
  padding: 28px;
}

.notice {
  margin-top: 24px;
  padding: 14px 16px;
  border-left: 4px solid var(--gold);
  background: rgba(246, 251, 255, 0.12);
  color: #fff;
  font-weight: 700;
}

.document-section {
  background: var(--paper);
}

.document-section.blueprint-light {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: #f6fbff;
}

.document-section.blueprint-light::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image: url("assets/blueprint-light-structure.png");
  background-position: center;
  background-size: cover;
  opacity: 0.09;
}

.document-section.blueprint-light::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(246, 251, 255, 0.97), rgba(246, 251, 255, 0.82));
}

.document-section.blueprint-light .page-shell {
  position: relative;
  z-index: 1;
}

.document-grid {
  grid-template-columns: minmax(260px, 0.72fr) minmax(0, 1.28fr);
}

.document-grid figure {
  margin: 0;
}

.architecture-map {
  display: grid;
  grid-template-columns: minmax(260px, 0.58fr) minmax(0, 1.42fr);
  gap: 22px;
  align-items: stretch;
}

.map-origin {
  min-height: 100%;
  padding: 32px;
  border-radius: var(--radius);
  background: var(--green);
  color: #fffaf0;
  box-shadow: var(--shadow);
}

.map-origin h2 {
  color: #fffaf0;
}

.map-origin p {
  color: rgba(255, 250, 240, 0.78);
}

.map-branches {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.map-branches article {
  min-height: 210px;
  padding: 24px;
}

.map-branches span {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--gold-deep);
  font-weight: 900;
}

.flow-section {
  display: grid;
  gap: 30px;
}

.flow-line {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.flow-line span {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fffdf8;
  color: var(--green);
  font-weight: 800;
}

.resources-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.resource-feature {
  grid-column: span 2;
  grid-row: span 2;
  background:
    linear-gradient(135deg, rgba(213, 165, 74, 0.16), rgba(255, 255, 255, 0.72)),
    #fffdf8;
}

.resource-feature h2 {
  font-size: 2.7rem;
}

.contact-hero {
  background:
    linear-gradient(90deg, rgba(213, 165, 74, 0.12) 1px, transparent 1px),
    linear-gradient(135deg, var(--green), var(--ink));
  background-size: 84px 84px, auto;
}

.contact-grid {
  grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
  align-items: start;
}

.contact-panel,
.contact-form {
  padding: 30px;
}

.check-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--text);
}

.check-list svg {
  margin-top: 4px;
  color: var(--green);
}

.contact-form {
  display: grid;
  gap: 18px;
}

.contact-form label {
  display: grid;
  gap: 8px;
  color: #231f1a;
  font-weight: 800;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid #cfc4b5;
  border-radius: var(--radius);
  background: #fffdf8;
  color: var(--ink);
  font: inherit;
  padding: 12px 13px;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form button {
  width: fit-content;
  border: 0;
  cursor: pointer;
  font: inherit;
}

.site-footer {
  padding: 54px 0;
  background: var(--ink);
  color: rgba(255, 250, 240, 0.78);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto;
  gap: 28px;
  align-items: start;
}

.footer-brand {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--gold-pale);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.35rem;
  text-decoration: none;
}

.site-footer p {
  max-width: 520px;
  margin-bottom: 0;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 14px 18px;
}

.site-footer nav a {
  color: rgba(255, 250, 240, 0.78);
  text-decoration: none;
}

.site-footer nav a:hover {
  color: var(--gold-pale);
}

.footer-bottom {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding-top: 26px;
  border-top: 1px solid rgba(213, 165, 74, 0.22);
  color: rgba(255, 250, 240, 0.58);
  font-size: 0.92rem;
}

@media (max-width: 1080px) {
  h1 {
    font-size: 4.35rem;
  }

  h2 {
    font-size: 2.65rem;
  }

  .nav-shell {
    width: min(100% - 28px, 1320px);
  }

  .site-nav {
    gap: 4px;
  }

  .site-nav a {
    padding: 0 9px;
    font-size: 0.9rem;
  }

  .system-chain,
  .role-grid,
  .diagram-gallery,
  .application-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

@media (max-width: 840px) {
  .page-shell {
    width: min(100% - 32px, var(--container));
  }

  .nav-toggle {
    display: grid;
  }

  .site-nav {
    position: absolute;
    left: 14px;
    right: 14px;
    top: calc(100% + 8px);
    display: none;
    padding: 10px;
    border: 1px solid rgba(213, 165, 74, 0.35);
    border-radius: var(--radius);
    background: rgba(8, 8, 7, 0.98);
    box-shadow: 0 18px 54px rgba(0, 0, 0, 0.3);
  }

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

  .site-nav a {
    justify-content: flex-start;
    width: 100%;
    padding: 0 14px;
  }

  .site-nav .nav-cta {
    margin-left: 0;
    justify-content: center;
  }

  .brand {
    min-width: 0;
  }

  .hero {
    min-height: 68svh;
    padding: 74px 0 58px;
  }

  .hero::before {
    background: linear-gradient(180deg, rgba(8, 8, 7, 0.92), rgba(8, 8, 7, 0.72));
  }

  h1,
  .subhero h1 {
    font-size: 3.2rem;
  }

  h2 {
    font-size: 2.2rem;
  }

  .hero-lede,
  .subhero p,
  .section-heading p,
  .origin-grid p {
    font-size: 1rem;
  }

  .formula-statement {
    font-size: 1.24rem;
  }

  .hero-actions {
    display: grid;
    max-width: 420px;
  }

  .button {
    width: 100%;
    white-space: normal;
    text-align: center;
  }

  .origin-grid,
  .formula-layout,
  .blueprint-layout,
  .blueprint-layout.reverse,
  .pathway-layout,
  .document-grid,
  .subhero-layout,
  .sequence-layout,
  .contact-grid,
  .architecture-map,
  .theory-cycle,
  .theory-scale {
    grid-template-columns: 1fr;
  }

  .subhero-figure {
    justify-self: start;
    max-width: 360px;
  }

  .section {
    padding: 72px 0;
  }

  .volume-grid,
  .map-branches {
    grid-template-columns: 1fr;
  }

  .pathway-list a,
  .sequence-list li {
    grid-template-columns: 1fr;
    gap: 8px;
  }

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

  .site-footer nav {
    justify-content: flex-start;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

@media (max-width: 560px) {
  .nav-shell {
    min-height: 68px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
  }

  .brand-text strong {
    font-size: 0.98rem;
  }

  .brand-text em {
    font-size: 0.68rem;
  }

  h1,
  .subhero h1 {
    font-size: 2.55rem;
  }

  h2 {
    font-size: 1.9rem;
  }

  .hero {
    min-height: 66svh;
    padding-top: 60px;
  }

  .subhero {
    padding: 58px 0 56px;
  }

  .variable-grid,
  .system-chain,
  .role-grid,
  .diagram-gallery,
  .cycle-grid,
  .scale-images,
  .application-grid,
  .resources-grid {
    grid-template-columns: 1fr;
  }

  .diagram-card.featured {
    grid-column: auto;
  }

  .resource-feature {
    grid-column: auto;
    grid-row: auto;
  }

  .variable-grid article,
  .role-grid article,
  .application-grid article,
  .resources-grid article,
  .contact-panel,
  .contact-form {
    padding: 22px;
  }
}