:root {
  --color-background: #f7f3eb;
  --color-surface: #ffffff;
  --color-background-secondary: #ebe7df;
  --color-text: #242927;
  --color-text-muted: #5c6662;
  --color-dark: #17211f;
  --color-accent: #0b6963;
  --color-accent-hover: #07514d;
  --color-accent-light: #dcefeb;
  --color-border: #d7d4cc;
  --color-white: #ffffff;
  --content-max: 76rem;
  --content-narrow: 48rem;
  --radius: 1rem;
  --shadow-subtle: 0 1rem 2.5rem rgb(23 33 31 / 8%);
  --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial,
    sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --space-section: clamp(4.5rem, 9vw, 8rem);
  --transition: 180ms ease;
  --header-height: 5.5rem;
}

/* Reset and document defaults */

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

html {
  color-scheme: light;
  overflow-x: clip;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  min-width: 20rem;
  min-height: 100vh;
  margin: 0;
  padding-top: var(--header-height);
  overflow-wrap: break-word;
  overflow-x: clip;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-system);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

[id] {
  scroll-margin-top: calc(var(--header-height) + 1rem);
}

body,
h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
  margin-block-start: 0;
}

ul[role="list"],
ol[role="list"] {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

button {
  color: inherit;
}

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

img {
  height: auto;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

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

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

::selection {
  background: var(--color-accent-light);
  color: var(--color-dark);
}

/* Typography */

h1,
h2,
h3,
h4 {
  max-width: 24ch;
  margin-block-end: 0.65em;
  color: var(--color-text);
  font-weight: 650;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

h1 {
  font-size: clamp(2.75rem, 7vw, 5.75rem);
}

h2 {
  font-size: clamp(2rem, 4.5vw, 3.75rem);
}

h3 {
  font-size: clamp(1.3rem, 2.4vw, 1.75rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

h4 {
  font-size: 1.125rem;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

p {
  max-width: 68ch;
  margin-block-end: 1.25rem;
  color: var(--color-text-muted);
}

.lede {
  max-width: 58ch;
  font-size: clamp(1.15rem, 2vw, 1.4rem);
  line-height: 1.6;
}

.eyebrow {
  margin-block-end: 1rem;
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.14em;
  line-height: 1.3;
  text-transform: uppercase;
}

.section-heading {
  display: grid;
  max-width: 48rem;
  gap: 0.5rem;
  margin-block-end: clamp(2rem, 5vw, 3.5rem);
}

.section-heading > * {
  margin-block-end: 0;
}

.section-heading--center {
  margin-inline: auto;
  text-align: center;
}

.section-heading--center > * {
  margin-inline: auto;
}

/* Layout primitives */

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

.container-narrow {
  width: min(100% - 2.5rem, var(--content-narrow));
}

.section {
  padding-block: var(--space-section);
}

.section--surface {
  background: var(--color-surface);
}

.section--stone {
  background: var(--color-background-secondary);
}

.section--dark {
  background: var(--color-dark);
  color: var(--color-white);
}

.section--dark :is(h1, h2, h3, h4, p) {
  color: var(--color-white);
}

.section--dark p {
  opacity: 0.78;
}

.cluster,
.button-group,
.tag-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.stack {
  display: grid;
  gap: 1.5rem;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
}

.content-grid > * {
  grid-column: span 4;
}

.content-grid--two > * {
  grid-column: span 6;
}

.content-grid--four > * {
  grid-column: span 3;
}

/* Buttons and labels */

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.2rem;
  border: 1px solid var(--color-accent);
  border-radius: 999px;
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  transition:
    background-color var(--transition),
    border-color var(--transition),
    color var(--transition),
    transform var(--transition);
}

.button:hover {
  border-color: var(--color-accent-hover);
  background: var(--color-accent-hover);
  color: var(--color-white);
}

.button:active {
  transform: translateY(1px);
}

.button--secondary {
  border-color: var(--color-border);
  background: transparent;
  color: var(--color-text);
}

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

.button--light {
  border-color: var(--color-white);
  background: var(--color-white);
  color: var(--color-dark);
}

.button--light:hover {
  border-color: var(--color-accent-light);
  background: var(--color-accent-light);
  color: var(--color-dark);
}

.status-badge,
.tag {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--color-accent-light);
  color: var(--color-accent-hover);
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.035em;
  line-height: 1.25;
}

.tag {
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  font-weight: 650;
}

/* Cards and featured content */

.card {
  display: flex;
  min-width: 0;
  height: 100%;
  flex-direction: column;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
}

.card > :last-child {
  margin-block-end: 0;
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-block-end: 1.5rem;
}

.card__link {
  margin-block-start: auto;
  padding-block-start: 1rem;
  font-weight: 700;
}

.card--accent {
  border-color: transparent;
  background: var(--color-accent-light);
}

.card--dark {
  border-color: rgb(255 255 255 / 16%);
  background: var(--color-dark);
  color: var(--color-white);
}

.card--dark :is(h2, h3, h4, p) {
  color: var(--color-white);
}

.card--dark p {
  opacity: 0.78;
}

.featured {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  box-shadow: var(--shadow-subtle);
}

.featured__content {
  align-self: center;
  padding: clamp(2rem, 5vw, 4.5rem);
}

.featured__media {
  min-height: 24rem;
  background: var(--color-background-secondary);
}

.featured__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Header and navigation */

.skip-link {
  position: fixed;
  z-index: 3000;
  inset: 0 auto auto 1rem;
  padding: 0.75rem 1rem;
  border-radius: 0 0 0.5rem 0.5rem;
  background: var(--color-dark);
  color: var(--color-white);
  font-weight: 700;
  transform: translateY(-120%);
}

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

.site-header {
  position: fixed;
  z-index: 2000;
  top: 0;
  right: 0;
  left: 0;
  width: 100%;
  border-bottom: 1px solid var(--color-border);
  background: rgb(247 243 235 / 82%);
  -webkit-backdrop-filter: blur(16px) saturate(130%);
  backdrop-filter: blur(16px) saturate(130%);
  transition:
    background-color var(--transition),
    box-shadow var(--transition);
}

.site-header.is-scrolled {
  background: rgb(247 243 235 / 92%);
  box-shadow: 0 0.45rem 1.5rem rgb(23 33 31 / 8%);
}

.site-header__inner {
  display: flex;
  min-height: var(--header-height);
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.featured--open-question {
  position: relative;
}

.open-question__watermark {
  position: relative;
  overflow: hidden;
  background: var(--color-accent-light);
}

.open-question__watermark::before,
.open-question__watermark::after {
  position: absolute;
  border: 1px solid rgb(11 105 99 / 18%);
  border-radius: 50%;
  content: "";
}

.open-question__watermark::before {
  width: 72%;
  aspect-ratio: 1;
  top: -18%;
  right: -12%;
}

.open-question__watermark::after {
  width: 54%;
  aspect-ratio: 0.72;
  bottom: -22%;
  left: 4%;
  transform: rotate(28deg);
}

.open-question__watermark img {
  position: absolute;
  z-index: 1;
  width: min(135%, 36rem);
  max-width: none;
  height: auto;
  top: 50%;
  left: 54%;
  opacity: 0.08;
  transform: translate(-50%, -50%) rotate(-8deg);
}

.brand-lockup {
  display: inline-flex;
  flex: 0 1 auto;
  align-items: center;
  gap: 0.8rem;
  color: var(--color-text);
  font-weight: 750;
  line-height: 1.1;
  text-decoration: none;
}

.brand-lockup:hover {
  color: var(--color-accent);
}

.brand-lockup__mark {
  width: 2.6rem;
  height: 2.6rem;
  flex: 0 0 auto;
  object-fit: contain;
}

.brand-lockup__text {
  max-width: 12rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
}

.site-nav__link {
  position: relative;
  padding-block: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-weight: 650;
  text-decoration: none;
}

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

.site-nav__link[aria-current="page"]::after {
  position: absolute;
  right: 0;
  bottom: 0.15rem;
  left: 0;
  height: 2px;
  background: var(--color-accent);
  content: "";
}

.nav-toggle {
  position: relative;
  display: none;
  min-width: 2.75rem;
  min-height: 2.75rem;
  place-items: center;
  padding: 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  background: rgb(255 255 255 / 45%);
  cursor: pointer;
}

.nav-toggle__line {
  position: absolute;
  width: 1.25rem;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transform-origin: center;
  transition:
    opacity var(--transition),
    transform var(--transition);
}

.nav-toggle__line:nth-child(1) {
  transform: translateY(-0.38rem);
}

.nav-toggle__line:nth-child(3) {
  transform: translateY(0.38rem);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  transform: rotate(-45deg);
}

/* Hero and page introductions */

.hero {
  padding-block: clamp(5rem, 11vw, 9.5rem);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 7rem);
}

.hero__content > :last-child {
  margin-block-end: 0;
}

.hero__art {
  position: relative;
  display: grid;
  min-height: clamp(20rem, 40vw, 34rem);
  place-items: center;
  isolation: isolate;
}

.hero__art::before {
  position: absolute;
  z-index: -2;
  width: min(80%, 28rem);
  aspect-ratio: 1;
  border-radius: 47% 53% 58% 42% / 52% 42% 58% 48%;
  background: var(--color-accent-light);
  content: "";
  transform: translate(3%, -1%) rotate(-7deg);
}

.hero__art::after {
  position: absolute;
  z-index: -3;
  width: min(92%, 32rem);
  aspect-ratio: 1;
  border: 1px solid rgb(11 105 99 / 24%);
  border-radius: 50%;
  content: "";
  transform: translate(-5%, 3%);
}

.hero__art img {
  position: relative;
  z-index: 2;
  width: min(55%, 18rem);
}

.hero__orbit {
  position: absolute;
  border: 1px solid rgb(11 105 99 / 40%);
  border-radius: 50%;
}

.hero__orbit--outer {
  width: min(76%, 26rem);
  aspect-ratio: 1.3;
  transform: rotate(24deg);
}

.hero__orbit--inner {
  width: min(58%, 20rem);
  aspect-ratio: 0.78;
  transform: rotate(-31deg);
}

.hero__node {
  position: absolute;
  z-index: 3;
  width: 0.65rem;
  aspect-ratio: 1;
  border: 3px solid var(--color-background);
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 1px rgb(11 105 99 / 20%);
}

.hero__node--one {
  top: 22%;
  right: 18%;
}

.hero__node--two {
  right: 25%;
  bottom: 19%;
}

.hero__node--three {
  bottom: 26%;
  left: 14%;
}

.page-hero {
  padding-block: clamp(4rem, 9vw, 7.5rem);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  max-width: 16ch;
}

/* Founder and calls to action */

.founder {
  display: grid;
  grid-template-columns: minmax(16rem, 0.75fr) minmax(0, 1.25fr);
  align-items: center;
  gap: clamp(2.5rem, 7vw, 7rem);
}

.founder__image {
  width: 100%;
  aspect-ratio: 1;
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: var(--shadow-subtle);
}

.cta-section {
  padding-block: clamp(3.5rem, 7vw, 6rem);
}

.cta-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(2rem, 5vw, 4.5rem);
  border-radius: var(--radius);
  background: var(--color-dark);
  color: var(--color-white);
}

.cta-panel :is(h2, h3, p) {
  color: var(--color-white);
}

.cta-panel p {
  margin-block-end: 0;
  opacity: 0.78;
}

/* Footer */

.site-footer {
  padding-block: clamp(3.5rem, 7vw, 5.5rem) 2rem;
  background: var(--color-dark);
  color: var(--color-white);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(15rem, 2fr) repeat(2, minmax(9rem, 1fr));
  gap: 3rem;
}

.site-footer :is(h2, h3, h4, p) {
  color: var(--color-white);
}

.site-footer p {
  opacity: 0.72;
}

.site-footer__heading {
  margin-block-end: 1.25rem;
  font-size: 1rem;
  letter-spacing: 0;
  line-height: 1.3;
  white-space: nowrap;
}

.site-footer a {
  color: var(--color-white);
}

.site-footer a:hover {
  color: var(--color-accent-light);
}

.site-footer__links {
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-block-start: 3.5rem;
  padding-block-start: 1.5rem;
  border-top: 1px solid rgb(255 255 255 / 16%);
  font-size: 0.875rem;
}

.site-footer__meta p {
  margin: 0;
}

/* Articles, tools, legal pages, and placeholders */

.article-layout,
.legal-layout {
  padding-block: var(--space-section);
}

.article-header {
  margin-block-end: clamp(3rem, 7vw, 5.5rem);
}

.article-header h1 {
  max-width: 18ch;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.prose {
  font-size: 1.05rem;
}

.prose > * {
  max-width: 68ch;
}

.prose > :is(h2, h3, h4) {
  margin-block-start: 2.5em;
}

.prose :is(ul, ol) {
  max-width: 68ch;
  padding-inline-start: 1.5rem;
  color: var(--color-text-muted);
}

.prose li + li {
  margin-block-start: 0.5rem;
}

.prose blockquote {
  margin-block: 2rem;
  padding-inline-start: 1.5rem;
  border-left: 3px solid var(--color-accent);
  color: var(--color-text);
  font-size: 1.2rem;
}

.tool-tags,
.category-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-block: 1.5rem;
}

.placeholder-page {
  display: grid;
  min-height: calc(100vh - 10rem);
  align-items: center;
  padding-block: var(--space-section);
}

.placeholder-content {
  max-width: 46rem;
  padding: clamp(2rem, 5vw, 4rem);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  box-shadow: var(--shadow-subtle);
}

.placeholder-content > :last-child {
  margin-block-end: 0;
}

/* Tablet */

@media (max-width: 60rem) {
  .content-grid > *,
  .content-grid--four > * {
    grid-column: span 6;
  }

  .hero__grid,
  .featured,
  .founder {
    grid-template-columns: 1fr;
  }

  .hero__content {
    max-width: 48rem;
  }

  .hero__art {
    min-height: 25rem;
  }

  .featured__media {
    min-height: 20rem;
    order: -1;
  }
}

/* Mobile navigation and layouts */

@media (max-width: 55.999rem) {
  :root {
    --header-height: 4.75rem;
  }

  .container,
  .container-narrow {
    width: min(100% - 2rem, var(--content-max));
  }

  .site-header__inner {
    min-height: var(--header-height);
    flex-wrap: wrap;
    gap: 0;
  }

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

  .site-nav {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 1rem;
    left: 1rem;
    width: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.65rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: rgb(247 243 235 / 96%);
    box-shadow: var(--shadow-subtle);
    -webkit-backdrop-filter: blur(18px) saturate(130%);
    backdrop-filter: blur(18px) saturate(130%);
  }

  .site-nav[data-nav-menu][hidden] {
    display: none;
  }

  .site-nav__link {
    display: block;
    min-height: 3rem;
    padding: 0.75rem 0.85rem;
    border-bottom: 1px solid var(--color-border);
  }

  .site-nav__link[aria-current="page"]::after {
    width: 2rem;
    left: 0.85rem;
  }

  .site-nav .button {
    width: 100%;
    margin-block-start: 0.65rem;
  }

  .content-grid > *,
  .content-grid--two > *,
  .content-grid--four > * {
    grid-column: 1 / -1;
  }

  .hero {
    padding-block: 4.5rem;
  }

  .hero__art {
    min-height: min(74vw, 22rem);
  }

  .hero__art::before {
    width: min(72vw, 20rem);
  }

  .hero__art::after {
    width: min(82vw, 23rem);
  }

  .hero__art img {
    width: min(48vw, 13rem);
  }

  .featured--open-question {
    grid-template-columns: 1fr;
  }

  .featured--open-question .open-question__watermark {
    display: none;
    min-height: 0;
  }

  .button-group {
    align-items: stretch;
  }

  .button-group .button {
    flex: 1 1 12rem;
  }

  .cta-panel {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .site-footer__meta {
    flex-direction: column;
  }
}

@media (min-width: 56rem) {
  .site-nav[data-nav-menu][hidden] {
    display: flex;
  }
}

@media (max-width: 24rem) {
  .brand-lockup__text {
    max-width: 9rem;
    font-size: 0.9rem;
  }
}

/* Motion preferences */

@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;
  }

  .nav-toggle__line {
    transition: none;
  }
}