:root {
  color-scheme: dark;
  --bg: #080a0f;
  --bg-elevated: #10141d;
  --bg-soft: #15171c;
  --text: #f5f2e8;
  --text-muted: #b7b5ac;
  --text-soft: #858983;
  --line: rgba(245, 242, 232, 0.14);
  --line-strong: rgba(245, 242, 232, 0.24);
  --accent: #59e6ce;
  --accent-strong: #7cffdf;
  --accent-warm: #f5c45b;
  --accent-hot: #ff8066;
  --accent-cool: #86c7ff;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.32);
  --radius: 8px;
  --header-height: 76px;
  --max-width: 1180px;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f8f6ef;
  --bg-elevated: #ffffff;
  --bg-soft: #ece8dc;
  --text: #11130f;
  --text-muted: #4b5049;
  --text-soft: #6d736c;
  --line: rgba(17, 19, 15, 0.14);
  --line-strong: rgba(17, 19, 15, 0.24);
  --accent: #007d70;
  --accent-strong: #005d56;
  --accent-warm: #9a6500;
  --accent-hot: #b3452f;
  --accent-cool: #0d5f98;
  --shadow: 0 24px 70px rgba(34, 29, 16, 0.12);
}

:root[data-theme="precalc"] {
  color-scheme: dark;
  --bg: #08100f;
  --bg-elevated: #101816;
  --bg-soft: #18231f;
  --text: #fbfff2;
  --text-muted: #d9e6ca;
  --text-soft: #aab991;
  --line: rgba(190, 255, 80, 0.18);
  --line-strong: rgba(73, 228, 255, 0.34);
  --accent: #b8ff28;
  --accent-strong: #d7ff62;
  --accent-warm: #ffd34f;
  --accent-hot: #ff8c3a;
  --accent-cool: #49e4ff;
  --shadow: 0 24px 78px rgba(6, 18, 13, 0.45);
}

:root[data-theme="lesson"] {
  color-scheme: dark;
  --bg: #11182a;
  --bg-elevated: #1d2842;
  --bg-soft: #293752;
  --text: #f8fbff;
  --text-muted: #dde8ff;
  --text-soft: #aebbd8;
  --line: rgba(113, 146, 203, 0.42);
  --line-strong: rgba(107, 207, 255, 0.58);
  --accent: #b8ff69;
  --accent-strong: #aaff55;
  --accent-warm: #ffe56a;
  --accent-hot: #ff6fc3;
  --accent-cool: #5fe0ff;
  --shadow: 0 24px 76px rgba(7, 12, 28, 0.42);
}

:root[data-theme="contrast"] {
  color-scheme: dark;
  --bg: #000000;
  --bg-elevated: #070707;
  --bg-soft: #111111;
  --text: #ffffff;
  --text-muted: #e4e4e4;
  --text-soft: #c8c8c8;
  --line: rgba(255, 255, 255, 0.36);
  --line-strong: rgba(255, 255, 255, 0.58);
  --accent: #00ffe0;
  --accent-strong: #9ffff2;
  --accent-warm: #ffd94d;
  --accent-hot: #ff8a72;
  --accent-cool: #8bd3ff;
  --shadow: none;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top left, color-mix(in srgb, var(--accent) 18%, transparent), transparent 30rem),
    radial-gradient(circle at 80% 10%, color-mix(in srgb, var(--accent-warm) 13%, transparent), transparent 24rem),
    linear-gradient(135deg, var(--bg), color-mix(in srgb, var(--bg) 88%, var(--bg-soft)));
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), transparent 70%);
}

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

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

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

ul {
  margin: 0;
  padding-left: 1.2rem;
}

li + li {
  margin-top: 0.35rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 20;
  transform: translateY(-180%);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  background: var(--accent);
  color: #06100e;
  font-weight: 800;
  transition: transform 180ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid var(--accent-warm);
  outline-offset: 4px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: grid;
  grid-template-columns: auto auto;
  align-items: center;
  gap: 1rem;
  min-height: var(--header-height);
  width: min(100% - 2rem, var(--max-width));
  margin: 0 auto;
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
  font-weight: 800;
}

.brand span,
.footer-brand span {
  display: grid;
  min-width: 0;
}

.brand strong {
  font-size: 1rem;
  line-height: 1.1;
}

.brand small {
  color: var(--text-soft);
  font-size: 0.75rem;
  line-height: 1.2;
}

.nav-toggle {
  justify-self: end;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--text);
}

.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block;
  width: 1.1rem;
  height: 2px;
  margin: 0 auto;
  border-radius: 999px;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle-bars {
  position: relative;
}

.nav-toggle-bars::before,
.nav-toggle-bars::after {
  position: absolute;
  left: 0;
  content: "";
}

.nav-toggle-bars::before {
  top: -0.38rem;
}

.nav-toggle-bars::after {
  top: 0.38rem;
}

body.nav-open .nav-toggle-bars {
  transform: rotate(45deg);
}

body.nav-open .nav-toggle-bars::before {
  transform: translateY(0.38rem) rotate(90deg);
}

body.nav-open .nav-toggle-bars::after {
  opacity: 0;
}

.site-nav,
.theme-picker {
  display: none;
}

body.nav-open .site-nav,
body.nav-open .theme-picker {
  display: flex;
}

.site-nav {
  grid-column: 1 / -1;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0 0 1rem;
}

.site-nav a {
  border-radius: var(--radius);
  padding: 0.7rem 0.8rem;
  color: var(--text-muted);
  font-weight: 700;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
  background: var(--bg-soft);
}

.theme-picker {
  grid-column: 1 / -1;
  gap: 0.35rem;
  padding-bottom: 1rem;
}

.theme-button {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--text-muted);
  padding: 0.35rem 0.55rem;
  font-size: 0.78rem;
  font-weight: 800;
}

.theme-button[aria-pressed="true"] {
  border-color: color-mix(in srgb, var(--accent) 62%, var(--line));
  color: var(--text);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 34%, transparent);
}

.theme-swatch {
  width: 0.78rem;
  height: 0.78rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
}

.theme-swatch-dark {
  background: linear-gradient(135deg, #080a0f 0 50%, #59e6ce 50% 100%);
}

.theme-swatch-precalc {
  background: conic-gradient(from 90deg, #b8ff28, #ffd34f, #49e4ff, #ff8c3a, #b8ff28);
}

.theme-swatch-lesson {
  background: linear-gradient(135deg, #293752 0 44%, #b8ff69 44% 68%, #ffe56a 68% 100%);
}

.theme-swatch-light {
  background: linear-gradient(135deg, #f8f6ef 0 50%, #007d70 50% 100%);
}

.theme-swatch-contrast {
  background: linear-gradient(135deg, #000000 0 50%, #ffd94d 50% 100%);
}

.section-band {
  position: relative;
  overflow: hidden;
}

.section-inner,
.hero-inner,
.footer-inner {
  width: min(100% - 2rem, var(--max-width));
  margin: 0 auto;
}

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

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

.hero-inner {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

:root[data-theme="precalc"] h1 {
  color: var(--accent-strong);
  text-shadow: 0 0 34px rgba(184, 255, 40, 0.22);
}

:root[data-theme="precalc"] h2,
:root[data-theme="precalc"] h3 {
  color: var(--text);
}

:root[data-theme="precalc"] .eyebrow,
:root[data-theme="precalc"] .card-kicker {
  color: var(--accent-warm);
}

:root[data-theme="precalc"] .button-secondary,
:root[data-theme="precalc"] .card-link,
:root[data-theme="precalc"] .future-item {
  border-color: color-mix(in srgb, var(--accent-cool) 54%, var(--line));
}

:root[data-theme="lesson"] h1 {
  color: var(--accent-strong);
  text-shadow: 0 0 28px rgba(184, 255, 105, 0.2);
}

:root[data-theme="lesson"] h2,
:root[data-theme="lesson"] .eyebrow,
:root[data-theme="lesson"] .card-kicker,
:root[data-theme="lesson"] .future-status {
  color: var(--accent-warm);
}

:root[data-theme="lesson"] .button-secondary,
:root[data-theme="lesson"] .card-link,
:root[data-theme="lesson"] .future-item,
:root[data-theme="lesson"] .roadmap-list,
:root[data-theme="lesson"] .principle-card,
:root[data-theme="lesson"] .audience-panel {
  border-color: color-mix(in srgb, var(--accent-cool) 52%, var(--line));
}

:root[data-theme="lesson"] .math-stage,
:root[data-theme="lesson"] .project-card,
:root[data-theme="lesson"] .closing-panel {
  background:
    radial-gradient(circle at 92% 12%, rgba(255, 229, 106, 0.16), transparent 8rem),
    linear-gradient(145deg, color-mix(in srgb, var(--bg-elevated) 92%, transparent), color-mix(in srgb, var(--bg-soft) 82%, transparent));
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.04;
  letter-spacing: 0;
}

h1 {
  max-width: 10ch;
  font-size: 3rem;
  font-weight: 900;
}

h2 {
  max-width: 14ch;
  font-size: 2.15rem;
  font-weight: 880;
}

h3 {
  font-size: 1.25rem;
  font-weight: 840;
}

p {
  margin: 0;
}

.hero-lede {
  max-width: 43rem;
  margin-top: 1.35rem;
  color: var(--text-muted);
  font-size: 1.15rem;
}

.hero-actions,
.closing-panel .button {
  margin-top: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  font-weight: 850;
  line-height: 1.2;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-warm));
  color: #06100e;
  box-shadow: 0 14px 36px color-mix(in srgb, var(--accent) 22%, transparent);
}

.button-secondary {
  border-color: var(--line-strong);
  background: color-mix(in srgb, var(--bg-elevated) 82%, transparent);
  color: var(--text);
}

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

.signal-list {
  display: grid;
  gap: 0.75rem;
  max-width: 44rem;
  margin: 2.2rem 0 0;
}

.signal-list div {
  border-left: 2px solid var(--accent);
  padding-left: 0.85rem;
}

.signal-list dt {
  color: var(--text-soft);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.signal-list dd {
  margin: 0.1rem 0 0;
  color: var(--text);
  font-weight: 750;
}

.hero-visual {
  display: none;
  min-height: 21rem;
}

.math-stage {
  position: relative;
  isolation: isolate;
  width: min(100%, 34rem);
  aspect-ratio: 1;
  margin: 0 auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 50% 50%, color-mix(in srgb, var(--accent) 15%, transparent), transparent 12rem),
    radial-gradient(circle at 30% 20%, color-mix(in srgb, var(--accent-warm) 16%, transparent), transparent 11rem),
    linear-gradient(145deg, color-mix(in srgb, var(--bg-elevated) 94%, transparent), color-mix(in srgb, var(--bg-soft) 86%, transparent));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.mesh {
  position: absolute;
  inset: 10%;
  border: 1px solid var(--line);
  transform: rotate(45deg);
}

.mesh-b {
  inset: 22%;
  border-color: color-mix(in srgb, var(--accent-warm) 42%, var(--line));
  transform: rotate(-18deg);
}

.axis {
  position: absolute;
  top: 50%;
  left: 10%;
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

.axis-y {
  transform: rotate(90deg);
}

.orbit {
  position: absolute;
  inset: 16%;
  border: 1px solid color-mix(in srgb, var(--accent-cool) 45%, var(--line));
  border-radius: 50%;
  animation: rotate-slow 22s linear infinite;
}

.orbit-two {
  inset: 24%;
  border-color: color-mix(in srgb, var(--accent) 48%, var(--line));
  transform: rotate(62deg);
  animation-duration: 30s;
}

.orbit-three {
  inset: 34%;
  border-color: color-mix(in srgb, var(--accent-hot) 52%, var(--line));
  transform: rotate(-38deg);
  animation-duration: 36s;
}

.node {
  position: absolute;
  width: 0.72rem;
  height: 0.72rem;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 24px var(--accent);
}

.node-a {
  top: 18%;
  left: 28%;
}

.node-b {
  top: 37%;
  right: 17%;
  background: var(--accent-warm);
  box-shadow: 0 0 24px var(--accent-warm);
}

.node-c {
  right: 31%;
  bottom: 18%;
  background: var(--accent-hot);
  box-shadow: 0 0 24px var(--accent-hot);
}

.node-d {
  bottom: 33%;
  left: 17%;
  background: var(--accent-cool);
  box-shadow: 0 0 24px var(--accent-cool);
}

.stage-mark {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 7rem;
  height: 7rem;
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 18px 34px rgba(0, 0, 0, 0.32));
}

.formula {
  position: absolute;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elevated) 78%, transparent);
  color: var(--text-muted);
  padding: 0.35rem 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 750;
}

.formula-a {
  top: 12%;
  right: 12%;
}

.formula-b {
  top: 24%;
  left: 12%;
}

.formula-c {
  right: 9%;
  bottom: 28%;
}

.formula-d {
  bottom: 12%;
  left: 18%;
}

.formula-e {
  top: 56%;
  left: 7%;
}

.projects-band,
.audience-band,
.closing-band {
  padding: 5rem 0;
}

.mission-band,
.roadmap-band {
  padding: 5rem 0;
  background:
    linear-gradient(180deg, transparent, color-mix(in srgb, var(--bg-soft) 52%, transparent)),
    color-mix(in srgb, var(--bg) 92%, transparent);
}

.section-heading {
  display: grid;
  gap: 1rem;
  max-width: 49rem;
  margin-bottom: 2.2rem;
}

.section-heading p:not(.eyebrow),
.mission-copy p,
.closing-panel p {
  color: var(--text-muted);
  font-size: 1.04rem;
}

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

.project-card,
.principle-card,
.audience-panel {
  position: relative;
  display: grid;
  align-content: start;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, color-mix(in srgb, var(--bg-elevated) 94%, transparent), color-mix(in srgb, var(--bg-soft) 80%, transparent));
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.12);
}

.project-card {
  min-height: 18rem;
  padding: 1.2rem;
  overflow: hidden;
}

.project-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  content: "";
  background: linear-gradient(90deg, var(--accent), var(--accent-warm), var(--accent-hot));
}

.project-card-featured {
  min-height: 20rem;
}

.card-kicker {
  width: fit-content;
  margin-bottom: 1.1rem;
  border: 1px solid color-mix(in srgb, var(--accent) 50%, var(--line));
  border-radius: var(--radius);
  color: var(--accent);
  padding: 0.2rem 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 850;
  text-transform: uppercase;
}

.project-card h3 {
  max-width: 13ch;
}

.project-card p,
.principle-card p,
.audience-panel p {
  margin-top: 0.9rem;
  color: var(--text-muted);
}

.card-link {
  align-self: end;
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.65rem;
  margin-top: 1.35rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg) 45%, transparent);
  color: var(--text);
  padding: 0.55rem 0.75rem;
  font-weight: 850;
  text-align: left;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

button.card-link {
  appearance: none;
}

.card-link:hover,
.card-link:focus-visible {
  border-color: color-mix(in srgb, var(--accent) 72%, var(--line));
  background: color-mix(in srgb, var(--accent) 10%, var(--bg-elevated));
}

.mission-layout {
  display: grid;
  gap: 2rem;
}

.mission-copy {
  max-width: 41rem;
}

.mission-copy p {
  margin-top: 1.2rem;
}

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

.principle-card,
.audience-panel {
  padding: 1.25rem;
}

.principle-card h3,
.audience-panel h3 {
  max-width: 16ch;
}

.audience-panel {
  min-height: 20rem;
}

.panel-index {
  display: inline-block;
  margin-bottom: 1.4rem;
  color: var(--accent-warm);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 850;
}

.audience-panel ul {
  margin-top: 1.1rem;
  color: var(--text);
  font-weight: 700;
}

.roadmap-layout {
  display: grid;
  gap: 2rem;
}

.future-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.future-item {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elevated) 72%, transparent);
  padding: 1rem;
}

.future-status {
  display: inline-block;
  margin-bottom: 0.75rem;
  color: var(--accent-warm);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 850;
  text-transform: uppercase;
}

.future-item h3 {
  max-width: 15ch;
}

.future-item p {
  margin-top: 0.75rem;
  color: var(--text-muted);
}

.roadmap-list {
  display: grid;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--bg-elevated) 76%, transparent);
  overflow: hidden;
}

.roadmap-list div {
  display: grid;
  gap: 0.35rem;
  padding: 1rem;
}

.roadmap-list div + div {
  border-top: 1px solid var(--line);
}

.roadmap-list strong {
  color: var(--accent);
}

.roadmap-list span {
  color: var(--text-muted);
}

.closing-panel {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent) 15%, transparent), transparent 36%),
    linear-gradient(145deg, color-mix(in srgb, var(--bg-elevated) 92%, transparent), color-mix(in srgb, var(--bg-soft) 82%, transparent));
  padding: 1.4rem;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.closing-panel h2 {
  max-width: 15ch;
}

.closing-panel p {
  max-width: 44rem;
  margin-top: 1rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  padding: 2rem 0;
}

.footer-inner {
  display: grid;
  gap: 1rem;
  color: var(--text-muted);
}

.footer-brand {
  color: var(--text);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--accent);
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 520ms ease, transform 520ms ease;
}

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

@keyframes rotate-slow {
  to {
    rotate: 360deg;
  }
}

@media (min-width: 44rem) {
  h1 {
    font-size: 4.4rem;
  }

  h2 {
    font-size: 2.8rem;
  }

  .signal-list {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .project-card {
    padding: 1.45rem;
  }

  .closing-panel {
    padding: 2rem;
  }
}

@media (min-width: 62rem) {
  .header-inner {
    grid-template-columns: auto 1fr auto;
  }

  .nav-toggle {
    display: none;
  }

  .site-nav,
  .theme-picker {
    display: flex;
    grid-column: auto;
    padding: 0;
  }

  .site-nav {
    justify-self: center;
    flex-direction: row;
  }

  .theme-picker {
    justify-self: end;
  }

  .theme-button {
    padding-inline: 0.45rem;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(25rem, 0.98fr);
  }

  .hero-visual {
    display: block;
  }

  h1 {
    font-size: 5.7rem;
  }

  h2 {
    font-size: 3.15rem;
  }

  .hero-lede {
    font-size: 1.22rem;
  }

  .project-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .project-card {
    grid-column: span 2;
  }

  .project-card-featured {
    grid-column: span 3;
  }

  .mission-layout,
  .roadmap-layout {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: start;
  }

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

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

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

  .footer-inner {
    grid-template-columns: auto 1fr auto;
    align-items: center;
  }

  .site-footer nav {
    justify-content: center;
  }
}

@media (max-width: 30rem) {
  .header-inner,
  .section-inner,
  .hero-inner,
  .footer-inner {
    width: min(100% - 1.25rem, var(--max-width));
  }

  h1 {
    font-size: 2.45rem;
  }

  h2 {
    font-size: 1.85rem;
  }

  .hero {
    padding-top: 2.2rem;
    padding-bottom: 2rem;
  }

  .projects-band {
    padding-top: 2rem;
  }

  .hero-lede {
    margin-top: 1rem;
  }

  .hero-actions {
    margin-top: 1.25rem;
  }

  .signal-list {
    gap: 0.5rem;
    margin-top: 1.45rem;
  }

  .hero-actions,
  .theme-picker {
    align-items: stretch;
  }

  .theme-picker {
    flex-direction: column;
  }

  .button,
  .theme-button {
    width: 100%;
  }

  .formula {
    font-size: 0.68rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}