/* style.css — COGVATION design system + site-wide component styles */

/* ============ FONT FAMILIES ============ */
:root {
  --font-display: 'Cabinet Grotesk', 'Arial Black', sans-serif;
  --font-body: 'Satoshi', 'Helvetica Neue', Arial, sans-serif;
}

/* ============ TYPE SCALE (fluid clamp) ============ */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);
  --text-hero: clamp(2.75rem, 1rem + 6vw, 6.5rem);
}

/* ============ SPACING (4px system) ============ */
:root {
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

/* ============ RADIUS / TRANSITIONS / WIDTHS ============ */
:root {
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1.25rem;
  --radius-full: 9999px;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
  --content-narrow: 640px;
  --content-default: 980px;
  --content-wide: 1240px;
  --content-full: 100%;
}

/* ============ COLOR SYSTEM — COGVATION BRAND ============
   Deep Navy #10192B, Teal #1B8C86, Orange/Amber #D98E2B
   sampled from existing COGVATION PDF materials. */
:root,
[data-theme='light'] {
  /* Surfaces */
  --color-bg: #fafaf8;
  --color-surface: #ffffff;
  --color-surface-2: #f2f1ee;
  --color-surface-offset: #eeece6;
  --color-navy: #10192b;
  --color-navy-2: #182338;
  --color-border: #e1dfda;
  --color-divider: #e1dfda;

  /* Text */
  --color-text: #10192b;
  --color-text-muted: #4b4a47;
  --color-text-faint: #8a887f;
  --color-text-inverse: #fafaf8;
  --color-text-inverse-muted: #b9c2d1;

  /* Primary accent — Teal */
  --color-primary: #1b8c86;
  --color-primary-hover: #146d68;
  --color-primary-active: #0f5450;
  --color-primary-highlight: #d7ece9;

  /* Secondary accent — Orange/Amber (sparing use) */
  --color-accent: #d98e2b;
  --color-accent-hover: #b8741d;
  --color-accent-highlight: #f5e3c4;

  /* Semantic (minimal use) */
  --color-success: #437a22;
  --color-warning: #964219;
  --color-error: #a12c7b;

  --shadow-sm: 0 1px 2px rgba(16, 25, 43, 0.06);
  --shadow-md: 0 6px 16px rgba(16, 25, 43, 0.08);
  --shadow-lg: 0 16px 40px rgba(16, 25, 43, 0.14);
}

[data-theme='dark'] {
  --color-bg: #0c1220;
  --color-surface: #10192b;
  --color-surface-2: #152036;
  --color-surface-offset: #182338;
  --color-navy: #060a13;
  --color-navy-2: #0a0f1c;
  --color-border: #2a3550;
  --color-divider: #24304a;

  --color-text: #e7e9ee;
  --color-text-muted: #a3aabb;
  --color-text-faint: #6b7389;
  --color-text-inverse: #10192b;
  --color-text-inverse-muted: #4b4a47;

  --color-primary: #3fb0a9;
  --color-primary-hover: #62c4bd;
  --color-primary-active: #82d1cb;
  --color-primary-highlight: #16332f;

  --color-accent: #e6a545;
  --color-accent-hover: #f0bd6f;
  --color-accent-highlight: #3a2c15;

  --color-success: #6daa45;
  --color-warning: #bb653b;
  --color-error: #d163a7;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.55);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #0c1220;
    --color-surface: #10192b;
    --color-surface-2: #152036;
    --color-surface-offset: #182338;
    --color-navy: #060a13;
    --color-navy-2: #0a0f1c;
    --color-border: #2a3550;
    --color-divider: #24304a;
    --color-text: #e7e9ee;
    --color-text-muted: #a3aabb;
    --color-text-faint: #6b7389;
    --color-text-inverse: #10192b;
    --color-text-inverse-muted: #4b4a47;
    --color-primary: #3fb0a9;
    --color-primary-hover: #62c4bd;
    --color-primary-active: #82d1cb;
    --color-primary-highlight: #16332f;
    --color-accent: #e6a545;
    --color-accent-hover: #f0bd6f;
    --color-accent-highlight: #3a2c15;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.35);
    --shadow-md: 0 6px 16px rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.55);
  }
}

/* ============ LAYOUT PRIMITIVES ============ */
.container {
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--wide {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--narrow {
  max-width: var(--content-narrow);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

section {
  padding-block: clamp(var(--space-16), 8vw, var(--space-24));
}
section.tight {
  padding-block: clamp(var(--space-10), 5vw, var(--space-16));
}

.prose p + p {
  margin-top: var(--space-4);
}
.prose {
  max-width: 68ch;
}
.prose--wide {
  max-width: 78ch;
}

/* ============ EYEBROW + DIVIDER (brand pattern from PDF collateral) ============ */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.rule {
  display: block;
  width: 64px;
  height: 3px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  margin-top: var(--space-3);
  margin-bottom: var(--space-6);
}
.rule--center {
  margin-inline: auto;
}

/* ============ TYPOGRAPHY ROLES ============ */
h1,
.h1 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.01em;
}
h2,
.h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  letter-spacing: -0.01em;
  color: var(--color-text);
}
h3,
.h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-lg);
  color: var(--color-text);
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 1.4rem + 3.2vw, 3.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.08;
}
.page-title {
  font-size: var(--text-2xl);
  line-height: 1.06;
}
.lede {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  font-weight: 400;
  max-width: 62ch;
}
.text-muted {
  color: var(--color-text-muted);
}
.text-faint {
  color: var(--color-text-faint);
}
.mono-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}

/* ============ HEADER ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
  isolation: isolate;
}
.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: color-mix(in oklab, var(--color-bg) 88%, transparent);
  backdrop-filter: blur(14px);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-4);
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.brand__mark {
  width: 34px;
  height: 34px;
  flex: none;
}
.brand__word {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.main-nav__list {
  display: flex;
  gap: var(--space-5);
  white-space: nowrap;
}
.main-nav__list a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-2) 0;
  position: relative;
  white-space: nowrap;
}
.main-nav__list a:hover,
.main-nav__list a:focus-visible {
  color: var(--color-text);
}
.main-nav__list a[aria-current='page'] {
  color: var(--color-primary);
}
nav.main-nav > .main-nav__cta {
  display: none;
}
.main-nav__list a[aria-current='page']::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.theme-toggle {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
  min-height: 44px;
}
.btn--primary {
  background: var(--color-primary);
  color: #ffffff;
}
.btn--primary:hover {
  background: var(--color-primary-hover);
}
.btn--ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn--on-dark {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}
.btn--on-dark:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

/* ============ HERO (dark navy, per brand: dark bg on hero/footer/cover sections) ============ */
.hero {
  position: relative;
  background: var(--color-navy);
  color: #fff;
  overflow: hidden;
  padding-block: clamp(var(--space-20), 12vw, var(--space-32));
}
[data-theme='dark'] .hero {
  background: var(--color-navy);
}
.hero__grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-16);
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero__eyebrow {
  color: #8fd6cf;
}
.hero p.lede {
  color: rgba(255, 255, 255, 0.78);
}
.hero__cta-row {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-8);
  flex-wrap: wrap;
}
.hero__art {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.hero__stats {
  display: flex;
  gap: var(--space-10);
  margin-top: var(--space-12);
  flex-wrap: wrap;
}
.hero__stat-value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: #fff;
}
.hero__stat-label {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.62);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ============ SECTION VARIANTS ============ */
.section--surface {
  background: var(--color-surface-2);
}
.section--navy {
  background: var(--color-navy);
  color: #fff;
}
.section--navy .eyebrow {
  color: #8fd6cf;
}
.section--navy h2,
.section--navy .prose {
  color: #fff;
}
.section--navy .text-muted {
  color: rgba(255, 255, 255, 0.7);
}
.section--navy .lede {
  color: rgba(255, 255, 255, 0.78);
}

/* ============ PILLARS (asymmetric, not 3-col icon grid) ============ */
.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: var(--space-10);
}
.pillar {
  padding: var(--space-8) var(--space-6);
  border-right: 1px solid var(--color-border);
  background: var(--color-surface);
}
.pillar:last-child {
  border-right: none;
}
.pillar__num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.05em;
}
.pillar__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-3);
  margin-bottom: var(--space-3);
}
.pillar__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.pillar--fourth {
  background: var(--color-primary-highlight);
}
[data-theme='dark'] .pillar--fourth {
  background: var(--color-primary-highlight);
}

/* ============ SEGMENTS (Who We Serve) ============ */
.segments {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: var(--space-10);
}
.segment {
  padding: var(--space-8) var(--space-6);
  border-right: 1px solid var(--color-border);
  background: var(--color-surface);
}
.segment:last-child {
  border-right: none;
}
.segment__label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--color-primary);
  letter-spacing: 0.05em;
}
.segment__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-3);
  margin-bottom: var(--space-3);
}
.segment__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ============ PROCESS STEPS (Build / Train / Govern) ============ */
.process {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-12);
}
.process__step {
  position: relative;
  padding-top: var(--space-8);
  border-top: 3px solid var(--color-border);
}
.process__step--active {
  border-top-color: var(--color-primary);
}
.process__index {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-border);
  line-height: 1;
}
[data-theme='dark'] .process__index {
  color: var(--color-divider);
}
.process__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  margin-top: var(--space-4);
  margin-bottom: var(--space-3);
}

/* ============ CARDS ============ */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
}
.card--flush {
  padding: 0;
  overflow: hidden;
}

/* ============ EVIDENCE LIST ============ */
.evidence-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-8);
}
.evidence-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--space-6);
  padding-block: var(--space-6);
  border-top: 1px solid var(--color-border);
}
.evidence-item:first-child {
  border-top: none;
}
.evidence-source {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
  color: var(--color-primary);
}
.evidence-item a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: color-mix(in oklab, var(--color-primary) 40%, transparent);
}

/* ============ PULL QUOTE ============ */
.pull-quote {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: 1.28;
  border-left: none;
  position: relative;
  padding-top: var(--space-8);
}
.pull-quote::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 3px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}
.pull-quote cite {
  display: block;
  margin-top: var(--space-6);
  font-family: var(--font-body);
  font-style: normal;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}

/* ============ TABLE / RESOURCE LIST ============ */
.resource-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: var(--space-10);
  border-top: 1px solid var(--color-border);
}
.resource-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-6);
  padding-block: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}
.resource-item__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-lg);
}
.resource-item__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
}
.resource-item__meta {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: var(--space-2);
}

/* ============ FOOTER ============ */
.site-footer {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.82);
  padding-block: var(--space-16) var(--space-8);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: var(--space-12);
}
.footer__brand .brand__word {
  color: #fff;
}
.footer__mission {
  margin-top: var(--space-4);
  color: rgba(255, 255, 255, 0.62);
  max-width: 34ch;
  font-size: var(--text-sm);
}
.footer__heading {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-4);
}
.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer__list a {
  color: rgba(255, 255, 255, 0.78);
  text-decoration: none;
  font-size: var(--text-sm);
}
.footer__list a:hover {
  color: #8fd6cf;
}
.footer__bottom {
  margin-top: var(--space-16);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.5);
}

/* ============ FORM ============ */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  margin-top: var(--space-10);
}
.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.form-field--full {
  grid-column: 1 / -1;
}
.form-field label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}
.form-field input,
.form-field select,
.form-field textarea {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  min-height: 44px;
}
.form-field textarea {
  min-height: 140px;
  resize: vertical;
}
.form-field input:focus-visible,
.form-field select:focus-visible,
.form-field textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}

/* ============ MISC ============ */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  z-index: 200;
  border-radius: var(--radius-md);
}
.skip-link:focus {
  left: var(--space-4);
  top: var(--space-4);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}
.two-col--rev {
  direction: rtl;
}
.two-col--rev > * {
  direction: ltr;
}
.stat-row {
  display: flex;
  gap: var(--space-12);
  flex-wrap: wrap;
  margin-top: var(--space-8);
}
.stat {
  min-width: 140px;
}
.stat__value {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-primary);
}
.stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: var(--space-1);
}

.not-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-8);
}
.not-list li {
  display: flex;
  gap: var(--space-4);
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-base);
  color: var(--color-text-muted);
}
.not-list li:last-child {
  border-bottom: none;
}
.not-list strong {
  color: var(--color-text);
  flex: none;
  min-width: 1.4em;
}

figure.art-figure {
  margin: 0;
}
figure.art-figure img {
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}
figure.art-figure figcaption {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
}

.bio-card {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-12);
  align-items: start;
}
.bio-portrait {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.bio-facts {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-top: var(--space-8);
}
.bio-fact {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: var(--space-4);
  font-size: var(--text-sm);
  padding-block: var(--space-3);
  border-top: 1px solid var(--color-border);
}
.bio-fact:first-child {
  border-top: none;
}
.bio-fact dt {
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: var(--text-xs);
  padding-top: 2px;
}
.bio-fact dd {
  color: var(--color-text);
}

.who-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}
.who-chip {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.form-note {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  margin-top: var(--space-3);
}

/* ============ MOBILE ============ */
@media (max-width: 900px) {
  .hero__grid,
  .two-col,
  .two-col--rev,
  .bio-card {
    grid-template-columns: 1fr;
    direction: ltr;
  }
  .two-col--rev {
    direction: ltr;
  }
  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
  .pillars {
    grid-template-columns: 1fr;
  }
  .pillar {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  .pillar:last-child {
    border-bottom: none;
  }
  .segments {
    grid-template-columns: 1fr;
  }
  .segment {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  .segment:last-child {
    border-bottom: none;
  }
  .process {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .evidence-item {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
  .bio-facts {
    margin-top: var(--space-6);
  }
}

@media (max-width: 720px) {
  html,
  body {
    overflow-x: hidden;
  }
  .main-nav {
    position: fixed;
    inset: 64px 0 0 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--space-8) var(--space-6);
    transform: translateX(100%);
    transition: transform var(--transition-interactive);
    z-index: 90;
    overflow-y: auto;
    visibility: hidden;
  }
  .main-nav.is-open {
    visibility: visible;
  }
  .main-nav.is-open {
    transform: translateX(0);
  }
  .main-nav__list {
    flex-direction: column;
    gap: var(--space-2);
    width: 100%;
  }
  .main-nav__list a {
    display: block;
    font-size: var(--text-lg);
    padding: var(--space-4) 0;
    border-bottom: 1px solid var(--color-border);
  }
  nav.main-nav > .main-nav__cta {
    display: inline-flex;
    margin-top: var(--space-8);
    width: 100%;
    justify-content: center;
  }
  .nav-toggle {
    display: flex;
  }
  .header-actions {
    order: 3;
    flex: none;
  }
  .site-header__inner {
    flex-wrap: nowrap;
  }
  .header-actions .btn {
    display: none;
  }
  .resource-item {
    grid-template-columns: 1fr;
  }
  .resource-item .btn {
    margin-top: var(--space-2);
    justify-self: start;
  }
}