:root {
  color-scheme: dark;
  --ink: #08090b;
  --ink-raised: #101216;
  --ink-soft: #17191d;
  --paper: #ece8df;
  --paper-deep: #ddd7cb;
  --white: #f7f5ef;
  --muted: #a5a5a1;
  --line: rgba(247, 245, 239, 0.16);
  --line-dark: rgba(8, 9, 11, 0.18);
  --ember: #df7950;
  --ember-light: #f1a16d;
  --aqua: #7fc8cf;
  --shell: 1280px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  overflow-x: clip;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background: var(--ink);
  color: var(--white);
  font-family: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

img,
svg {
  display: block;
}

img {
  max-width: 100%;
}

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

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  color: inherit;
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--ember-light);
  outline-offset: 5px;
}

::selection {
  background: var(--ember);
  color: var(--ink);
}

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

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 16px;
  background: var(--paper);
  color: var(--ink);
  font-size: 0.85rem;
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.69rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  line-height: 1.4;
  text-transform: uppercase;
}

.button {
  display: inline-flex;
  min-height: 52px;
  align-items: center;
  justify-content: center;
  gap: 28px;
  padding: 0 22px;
  border: 1px solid transparent;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition:
    background-color 300ms ease,
    color 300ms ease,
    border-color 300ms ease,
    transform 300ms var(--ease);
}

.button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.4;
  transition: transform 300ms var(--ease);
}

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

.button:hover svg {
  transform: translateX(4px);
}

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

.button--light:hover {
  background: var(--ember-light);
}

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

.button--dark:hover {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}

.text-link {
  position: relative;
  padding-bottom: 4px;
  color: rgba(247, 245, 239, 0.82);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.text-link::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  background: currentColor;
  content: "";
  transform: scaleX(0.25);
  transform-origin: left;
  transition: transform 300ms var(--ease);
}

.text-link:hover::after {
  transform: scaleX(1);
}

/* Header */

.site-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition:
    background-color 300ms ease,
    border-color 300ms ease,
    backdrop-filter 300ms ease;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(8, 9, 11, 0.82);
  backdrop-filter: blur(18px);
}

.site-header__inner {
  display: flex;
  height: 84px;
  align-items: center;
  justify-content: space-between;
}

.brand {
  position: relative;
  z-index: 102;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 0.9rem;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.brand b {
  color: var(--ember-light);
  font-weight: 650;
}

.brand__mark {
  width: 31px;
  height: 31px;
  overflow: visible;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.2;
}

.brand__mark circle:first-child,
.brand__spark {
  fill: currentColor;
  stroke: none;
}

.brand__spark {
  fill: var(--ember-light);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(24px, 3vw, 48px);
}

.site-nav a {
  position: relative;
  color: rgba(247, 245, 239, 0.74);
  font-size: 0.69rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 200ms ease;
}

.site-nav a:not(.site-nav__contact)::after {
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 1px;
  background: var(--ember-light);
  content: "";
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 250ms var(--ease);
}

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

.site-nav a:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-nav .site-nav__contact {
  padding: 10px 16px;
  border: 1px solid rgba(247, 245, 239, 0.38);
  color: var(--white);
  transition:
    color 200ms ease,
    background-color 200ms ease,
    border-color 200ms ease;
}

.site-nav .site-nav__contact:hover {
  border-color: var(--white);
  background: var(--white);
  color: var(--ink);
}

.nav-toggle {
  position: relative;
  z-index: 102;
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.nav-toggle > span:not(.sr-only) {
  position: absolute;
  left: 11px;
  width: 24px;
  height: 1px;
  background: currentColor;
  transition: transform 300ms var(--ease);
}

.nav-toggle > span:nth-child(2) {
  top: 18px;
}

.nav-toggle > span:nth-child(3) {
  top: 27px;
}

/* Hero */

.hero {
  position: relative;
  min-height: max(740px, 100svh);
  overflow: hidden;
  background: #120d16;
}

.hero::before {
  position: absolute;
  inset: -2%;
  background-image: url("assets/images/hero-background.webp");
  background-position: 50% 55%;
  background-size: cover;
  content: "";
  filter: saturate(0.85) contrast(1.05);
}

.hero::after {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(5, 6, 8, 0.88) 0%, rgba(5, 6, 8, 0.52) 46%, rgba(5, 6, 8, 0.18) 75%),
    linear-gradient(180deg, rgba(5, 6, 8, 0.64) 0%, transparent 30%, rgba(5, 6, 8, 0.72) 100%);
  content: "";
}

.hero__wash {
  position: absolute;
  z-index: 1;
  inset: 0;
  background:
    radial-gradient(circle at 78% 48%, rgba(240, 132, 76, 0.18), transparent 27%),
    linear-gradient(115deg, transparent 45%, rgba(80, 26, 64, 0.24));
  mix-blend-mode: screen;
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: flex;
  min-height: max(740px, 100svh);
  align-items: center;
  padding-block: 138px 128px;
}

.hero__copy {
  width: min(100%, 1020px);
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: clamp(26px, 4vh, 48px);
  color: rgba(247, 245, 239, 0.68);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ember-light);
  box-shadow: 0 0 0 6px rgba(241, 161, 109, 0.12);
}

.hero h1 {
  max-width: 1020px;
  margin: 0;
  font-size: clamp(4.3rem, 8.9vw, 8.9rem);
  font-weight: 450;
  letter-spacing: -0.07em;
  line-height: 0.84;
  text-wrap: balance;
}

.hero h1 span {
  display: block;
  margin-top: 0.11em;
  color: var(--ember-light);
  font-family: "Iowan Old Style", "Baskerville", "Times New Roman", serif;
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.055em;
}

.hero__lede {
  max-width: 590px;
  margin: clamp(34px, 5vh, 58px) 0 0;
  color: rgba(247, 245, 239, 0.76);
  font-size: clamp(1rem, 1.35vw, 1.16rem);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: 34px;
  margin-top: 36px;
}

.hero__index {
  position: absolute;
  right: 0;
  bottom: 132px;
  width: 220px;
  padding-top: 13px;
  border-top: 1px solid rgba(247, 245, 239, 0.34);
}

.hero__index span {
  color: rgba(247, 245, 239, 0.55);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.63rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero__index p {
  margin: 7px 0 0;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}

.hero__footer {
  position: absolute;
  z-index: 2;
  right: 0;
  bottom: 28px;
  left: 0;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  color: rgba(247, 245, 239, 0.42);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.59rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero__rule {
  height: 1px;
  background: rgba(247, 245, 239, 0.18);
}

/* Shared sections */

.section {
  padding-block: clamp(108px, 13vw, 190px);
}

.section-heading h2,
.research__copy h2,
.contact h2 {
  margin: 0;
  font-size: clamp(3rem, 6vw, 6rem);
  font-weight: 440;
  letter-spacing: -0.065em;
  line-height: 0.98;
  text-wrap: balance;
}

.section-heading > p:last-child,
.section-heading > div > p {
  max-width: 610px;
  margin: 30px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  line-height: 1.75;
}

.section-heading--split {
  display: grid;
  grid-template-columns: minmax(170px, 0.32fr) minmax(0, 1fr);
  gap: clamp(40px, 7vw, 110px);
  align-items: start;
}

/* Thesis */

.thesis {
  background: var(--ink);
}

.thesis-figure {
  position: relative;
  aspect-ratio: 16 / 8.5;
  margin: clamp(74px, 9vw, 130px) 0 0;
  overflow: hidden;
  background: var(--ink-raised);
}

.thesis-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 54%;
  transform: scale(1.015);
  transition: transform 1.4s var(--ease);
}

.thesis-figure:hover img {
  transform: scale(1.045);
}

.thesis-figure__veil {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 45%, rgba(4, 5, 7, 0.78) 100%),
    linear-gradient(90deg, rgba(4, 5, 7, 0.3), transparent 40%);
}

.thesis-figure figcaption {
  position: absolute;
  right: clamp(24px, 4vw, 58px);
  bottom: clamp(24px, 4vw, 50px);
  left: clamp(24px, 4vw, 58px);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.thesis-figure figcaption span {
  color: rgba(247, 245, 239, 0.6);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.61rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.thesis-figure figcaption strong {
  max-width: 410px;
  font-family: "Iowan Old Style", "Baskerville", "Times New Roman", serif;
  font-size: clamp(1.25rem, 2.2vw, 2rem);
  font-style: italic;
  font-weight: 400;
  line-height: 1.2;
  text-align: right;
}

.question-grid {
  display: grid;
  grid-template-columns: minmax(150px, 0.7fr) minmax(320px, 1.8fr) minmax(220px, 0.75fr);
  gap: clamp(34px, 6vw, 92px);
  align-items: start;
  margin-top: clamp(72px, 9vw, 128px);
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.question-grid blockquote {
  margin: -8px 0 0;
  font-family: "Iowan Old Style", "Baskerville", "Times New Roman", serif;
  font-size: clamp(2rem, 3.5vw, 3.7rem);
  font-style: italic;
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.question-grid > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.75;
}

/* Approach */

.approach {
  background: var(--paper);
  color: var(--ink);
}

.approach .eyebrow,
.build .eyebrow {
  color: rgba(8, 9, 11, 0.58);
}

.approach__heading {
  max-width: 820px;
}

.approach__heading > p:last-child {
  color: rgba(8, 9, 11, 0.65);
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(70px, 8vw, 118px);
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
}

.approach-card {
  display: flex;
  min-height: 430px;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(28px, 3.5vw, 48px);
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
  transition:
    background-color 350ms ease,
    color 350ms ease;
}

.approach-card:hover {
  background: var(--ink);
  color: var(--white);
}

.approach-card__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  color: rgba(8, 9, 11, 0.48);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  transition: color 350ms ease;
}

.approach-card__top svg {
  width: 44px;
  height: 44px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1;
}

.approach-card:hover .approach-card__top {
  color: var(--ember-light);
}

.approach-card h3 {
  margin: auto 0 18px;
  padding-top: 92px;
  font-size: clamp(2rem, 3.3vw, 3.2rem);
  font-weight: 450;
  letter-spacing: -0.055em;
  line-height: 1;
}

.approach-card p {
  max-width: 310px;
  margin: 0;
  color: rgba(8, 9, 11, 0.64);
  font-size: 0.92rem;
  line-height: 1.7;
  transition: color 350ms ease;
}

.approach-card:hover p {
  color: rgba(247, 245, 239, 0.66);
}

/* Research */

.research {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 54%, rgba(54, 107, 114, 0.1), transparent 26%),
    var(--ink);
}

.research__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(340px, 0.8fr);
  gap: clamp(64px, 10vw, 150px);
  align-items: start;
}

.research__visuals {
  position: relative;
  min-height: 890px;
}

.research-image {
  margin: 0;
}

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

.research-image figcaption {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.59rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.research-image--main {
  width: 73%;
}

.research-image--main img {
  aspect-ratio: 0.64;
}

.research-image--main figcaption {
  margin-top: 12px;
  color: rgba(247, 245, 239, 0.48);
}

.research-image--inset {
  position: absolute;
  right: 0;
  bottom: 5%;
  width: 47%;
  padding: 9px 9px 11px;
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.46);
}

.research-image--inset img {
  aspect-ratio: 0.72;
}

.research-image--inset figcaption {
  margin-top: 10px;
  text-align: right;
}

.research__copy {
  position: sticky;
  top: 138px;
  padding-top: 48px;
}

.research__copy h2 {
  margin-top: 27px;
  font-size: clamp(3.25rem, 5.5vw, 5.8rem);
}

.research__intro {
  max-width: 510px;
  margin: 34px 0 0;
  color: var(--muted);
  font-size: 1.03rem;
  line-height: 1.78;
}

.research-lenses {
  margin: 58px 0 0;
}

.research-lenses > div {
  display: grid;
  grid-template-columns: minmax(120px, 0.6fr) 1fr;
  gap: 26px;
  padding: 23px 0;
  border-top: 1px solid var(--line);
}

.research-lenses > div:last-child {
  border-bottom: 1px solid var(--line);
}

.research-lenses dt {
  font-size: 0.84rem;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.research-lenses dt span {
  margin-right: 12px;
  color: var(--ember-light);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.61rem;
}

.research-lenses dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

/* Signal band */

.signal-band {
  overflow: hidden;
  background: var(--ember);
  color: var(--ink);
  transform: rotate(-1.4deg) scale(1.02);
}

.signal-band__track {
  display: flex;
  width: max-content;
  align-items: center;
  gap: 32px;
  padding-block: 18px;
  animation: signal-scroll 32s linear infinite;
  will-change: transform;
}

.signal-band__track span {
  font-size: clamp(0.72rem, 1vw, 0.9rem);
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  white-space: nowrap;
}

.signal-band__track i {
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  border: 1px solid var(--ink);
  border-radius: 50%;
}

@keyframes signal-scroll {
  to {
    transform: translateX(-50%);
  }
}

/* Build */

.build {
  background: var(--paper);
  color: var(--ink);
}

.build__heading > div > p {
  color: rgba(8, 9, 11, 0.62);
}

.build-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  grid-template-rows: repeat(2, minmax(280px, 1fr));
  gap: 1px;
  margin-top: clamp(76px, 9vw, 128px);
  overflow: hidden;
  background: var(--line-dark);
  border: 1px solid var(--line-dark);
}

.build-card {
  display: flex;
  min-height: 300px;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(28px, 4vw, 54px);
  background: var(--paper);
  transition: background-color 300ms ease;
}

.build-card:hover:not(.build-card--featured) {
  background: #e3ddd2;
}

.build-card--featured {
  position: relative;
  grid-row: 1 / span 2;
  overflow: hidden;
  background:
    radial-gradient(circle at 70% 25%, rgba(223, 121, 80, 0.52), transparent 24%),
    radial-gradient(circle at 73% 27%, transparent 0 19%, rgba(241, 161, 109, 0.38) 19.2% 19.5%, transparent 20%),
    radial-gradient(circle at 73% 27%, transparent 0 28%, rgba(127, 200, 207, 0.2) 28.2% 28.5%, transparent 29%),
    linear-gradient(150deg, #15191d, #07080a 68%);
  color: var(--white);
}

.build-card--featured::after {
  position: absolute;
  top: 20%;
  right: -12%;
  width: 58%;
  aspect-ratio: 1;
  border: 1px solid rgba(247, 245, 239, 0.14);
  border-radius: 50%;
  content: "";
}

.build-card__code {
  position: relative;
  z-index: 1;
  color: rgba(8, 9, 11, 0.5);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.61rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.build-card--featured .build-card__code {
  color: rgba(247, 245, 239, 0.52);
}

.build-card > div {
  position: relative;
  z-index: 1;
}

.build-card__label {
  margin: 0 0 16px;
  color: var(--ember);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.65rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.build-card h3 {
  max-width: 530px;
  margin: 0;
  font-size: clamp(1.75rem, 3vw, 3rem);
  font-weight: 460;
  letter-spacing: -0.05em;
  line-height: 1.08;
}

.build-card--featured h3 {
  font-size: clamp(2.6rem, 4.3vw, 4.6rem);
}

.build-card > div > p:last-child {
  max-width: 470px;
  margin: 22px 0 0;
  color: rgba(8, 9, 11, 0.6);
  font-size: 0.9rem;
  line-height: 1.7;
}

.build-card--featured > div > p:last-child {
  color: rgba(247, 245, 239, 0.62);
}

.build__note {
  margin: 48px 0 0;
  font-family: "Iowan Old Style", "Baskerville", "Times New Roman", serif;
  font-size: clamp(1.4rem, 2.3vw, 2.1rem);
  font-style: italic;
  text-align: right;
}

/* Contact and footer */

.contact {
  position: relative;
  overflow: hidden;
  padding-block: clamp(120px, 15vw, 220px);
  background: var(--ember);
  color: var(--ink);
  color-scheme: light;
}

.contact__texture {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(223, 121, 80, 0.76), rgba(223, 121, 80, 0.76)),
    url("assets/images/hero-background.webp");
  background-position: 50% 64%;
  background-size: cover;
  filter: grayscale(1) contrast(1.25);
  mix-blend-mode: multiply;
  opacity: 0.38;
}

.contact__inner {
  position: relative;
}

.contact .eyebrow {
  color: rgba(8, 9, 11, 0.64);
}

.contact h2 {
  max-width: 1080px;
  margin-top: 34px;
  font-size: clamp(4rem, 9vw, 9.2rem);
  line-height: 0.88;
}

.contact__intro {
  display: grid;
  grid-template-columns: minmax(280px, 530px) minmax(250px, 390px);
  gap: 40px;
  align-items: start;
  justify-content: space-between;
  margin-top: clamp(58px, 8vw, 108px);
  padding-top: 34px;
  border-top: 1px solid rgba(8, 9, 11, 0.3);
}

.contact__intro p {
  margin: 0;
  color: rgba(8, 9, 11, 0.72);
  font-size: 1rem;
  line-height: 1.7;
}

.contact__intro .contact__privacy {
  justify-self: end;
  font-size: 0.8rem;
}

.contact-form {
  position: relative;
  margin-top: clamp(70px, 9vw, 120px);
}

.contact-form__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 42px clamp(32px, 6vw, 96px);
}

.contact-field {
  display: grid;
  gap: 10px;
}

.contact-field > span {
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.contact-field input,
.contact-field textarea {
  width: 100%;
  padding: 12px 0 17px;
  border: 0;
  border-bottom: 1px solid rgba(8, 9, 11, 0.38);
  border-radius: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  line-height: 1.5;
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.contact-field textarea {
  min-height: 154px;
  resize: vertical;
}

.contact-field input:focus,
.contact-field textarea:focus {
  border-color: var(--ink);
  box-shadow: 0 1px 0 var(--ink);
}

.contact-field input:user-invalid,
.contact-field textarea:user-invalid {
  border-color: #6f1e12;
}

.contact-field--message {
  grid-column: 1 / -1;
}

.contact-form__trap {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-form__actions {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 36px;
  margin-top: 34px;
}

.contact-form__verification {
  min-width: 300px;
  min-height: 88px;
}

.contact-form__verification > div {
  min-height: 65px;
}

.contact-form__verification p {
  margin: 8px 0 0;
  color: rgba(8, 9, 11, 0.62);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.57rem;
  letter-spacing: 0.06em;
}

.contact-form__submit {
  min-width: 220px;
}

.contact-form__submit:disabled {
  cursor: wait;
  opacity: 0.58;
  transform: none;
}

.contact-form__status {
  min-height: 27px;
  margin: 22px 0 0;
  color: rgba(8, 9, 11, 0.72);
  font-size: 0.82rem;
  font-weight: 650;
}

.contact-form__status[data-state="success"] {
  color: #153e27;
}

.contact-form__status[data-state="error"] {
  color: #651d12;
}

.site-footer {
  padding-block: 54px 36px;
  background: var(--ink);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  align-items: end;
  gap: 30px;
}

.brand--footer {
  justify-self: start;
}

.site-footer p {
  margin: 0;
  color: rgba(247, 245, 239, 0.42);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-align: center;
}

.site-footer__meta {
  display: flex;
  justify-content: flex-end;
  gap: 24px;
  color: rgba(247, 245, 239, 0.42);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.59rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer__meta a {
  color: rgba(247, 245, 239, 0.7);
}

/* Progressive enhancement */

.reveal.reveal-ready {
  opacity: 0;
  transform: translateY(34px);
  transition:
    opacity 850ms var(--ease),
    transform 850ms var(--ease);
}

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

.approach-card.reveal-ready:nth-child(2),
.build-card.reveal-ready:nth-child(2) {
  transition-delay: 90ms;
}

.approach-card.reveal-ready:nth-child(3),
.build-card.reveal-ready:nth-child(3) {
  transition-delay: 180ms;
}

/* Responsive */

@media (max-width: 1100px) {
  .hero__index {
    display: none;
  }

  .question-grid {
    grid-template-columns: 0.55fr 1.45fr;
  }

  .question-grid > p:last-child {
    grid-column: 2;
  }

  .research__grid {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr);
    gap: 64px;
  }

  .research__visuals {
    min-height: 780px;
  }

  .research-image--main {
    width: 80%;
  }

  .research-image--inset {
    width: 50%;
  }
}

@media (max-width: 860px) {
  .shell {
    width: min(calc(100% - 36px), var(--shell));
  }

  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    z-index: 101;
    inset: 0;
    display: flex;
    width: 100%;
    height: 100dvh;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 26px;
    padding: 110px max(24px, calc((100vw - var(--shell)) / 2));
    background:
      radial-gradient(circle at 85% 18%, rgba(223, 121, 80, 0.18), transparent 23%),
      var(--ink);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-18px);
    transition:
      opacity 260ms ease,
      transform 360ms var(--ease),
      visibility 0s linear 360ms;
  }

  .site-header.nav-open .site-nav {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0s;
  }

  .site-header.nav-open {
    border-bottom-color: transparent;
    background: transparent;
    backdrop-filter: none;
  }

  .site-nav a {
    font-size: clamp(1.8rem, 8vw, 3rem);
    font-weight: 450;
    letter-spacing: -0.035em;
    text-transform: none;
  }

  .site-nav a:not(.site-nav__contact)::after {
    bottom: 0;
  }

  .site-nav .site-nav__contact {
    margin-top: 18px;
    padding: 13px 19px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .site-header.nav-open .nav-toggle > span:nth-child(2) {
    top: 22px;
    transform: rotate(45deg);
  }

  .site-header.nav-open .nav-toggle > span:nth-child(3) {
    top: 22px;
    transform: rotate(-45deg);
  }

  .hero h1 {
    font-size: clamp(4rem, 12.4vw, 7rem);
  }

  .section-heading--split {
    grid-template-columns: 1fr;
    gap: 30px;
  }

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

  .approach-card {
    min-height: 320px;
  }

  .approach-card h3 {
    padding-top: 56px;
  }

  .research__grid {
    grid-template-columns: 1fr;
    gap: 76px;
  }

  .research__visuals {
    min-height: 880px;
  }

  .research-image--main {
    width: 72%;
  }

  .research-image--inset {
    width: 42%;
  }

  .research__copy {
    position: static;
    padding-top: 0;
  }

  .build-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }

  .build-card--featured {
    grid-row: auto;
    min-height: 600px;
  }

  .site-footer__inner {
    grid-template-columns: 1fr 1fr;
  }

  .site-footer p {
    display: none;
  }
}

@media (max-width: 620px) {
  .shell {
    width: calc(100% - 32px);
  }

  .site-header__inner {
    height: 72px;
  }

  .hero,
  .hero__inner {
    min-height: max(680px, 100svh);
  }

  .hero::before {
    background-position: 43% 54%;
  }

  .hero::after {
    background:
      linear-gradient(90deg, rgba(5, 6, 8, 0.74), rgba(5, 6, 8, 0.3)),
      linear-gradient(180deg, rgba(5, 6, 8, 0.7), rgba(5, 6, 8, 0.18) 45%, rgba(5, 6, 8, 0.8));
  }

  .hero__inner {
    align-items: flex-start;
    padding-block: 132px 120px;
  }

  .hero h1 {
    font-size: clamp(3.55rem, 17vw, 5.3rem);
    line-height: 0.88;
  }

  .hero__lede {
    max-width: 420px;
    margin-top: 30px;
    font-size: 0.95rem;
  }

  .hero__actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 24px;
    margin-top: 30px;
  }

  .hero__footer {
    grid-template-columns: auto 1fr;
  }

  .hero__footer > span:last-child {
    display: none;
  }

  .section {
    padding-block: 96px;
  }

  .section-heading h2,
  .research__copy h2 {
    font-size: clamp(3rem, 14vw, 4.5rem);
  }

  .thesis-figure {
    aspect-ratio: 0.82;
    margin-top: 62px;
  }

  .thesis-figure img {
    object-position: 50% 50%;
  }

  .thesis-figure figcaption {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
  }

  .thesis-figure figcaption strong {
    max-width: 290px;
    text-align: left;
  }

  .question-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    margin-top: 70px;
  }

  .question-grid > p:last-child {
    grid-column: 1;
  }

  .question-grid blockquote {
    font-size: clamp(2.2rem, 10vw, 3.1rem);
  }

  .approach-card {
    min-height: 340px;
  }

  .research__visuals {
    min-height: 650px;
  }

  .research-image--main {
    width: 80%;
  }

  .research-image--main img {
    aspect-ratio: 0.68;
  }

  .research-image--inset {
    bottom: 2%;
    width: 48%;
    padding: 6px 6px 8px;
  }

  .research-lenses > div {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .build-card {
    min-height: 330px;
  }

  .build-card--featured {
    min-height: 520px;
  }

  .build__note {
    text-align: left;
  }

  .contact h2 {
    font-size: clamp(4rem, 18vw, 6.4rem);
  }

  .contact__intro {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .contact__intro .contact__privacy {
    justify-self: start;
  }

  .contact-form__grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .contact-field--message {
    grid-column: 1;
  }

  .contact-form__actions {
    align-items: stretch;
    flex-direction: column;
  }

  .contact-form__verification {
    min-width: 0;
    width: 100%;
  }

  .contact-form__submit {
    width: 100%;
    justify-content: space-between;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .site-footer__meta {
    justify-content: space-between;
    padding-top: 24px;
    border-top: 1px solid var(--line);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

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