:root {
  --background: #f2efe7;
  --surface: #ebe7dc;
  --text: #111111;
  --muted: #66635d;
  --line: #c8c3b8;
  --accent-hover: #4a4843;
  --focus: #111111;
  --font-sans: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;
  --container: 90rem;
  --gutter: clamp(1rem, 4vw, 4rem);
  --section-space: clamp(5rem, 10vw, 10rem);
  --grid-gap: clamp(1.25rem, 2.5vw, 2.5rem);
  --rule: 1px solid var(--line);
  --transition: 150ms ease;
}

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

html {
  color-scheme: light;
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: clamp(1rem, 0.5vw + 0.9rem, 1.125rem);
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
p,
figure,
ul {
  margin: 0;
}

ul {
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.25em;
  transition:
    color var(--transition),
    background-color var(--transition),
    border-color var(--transition);
}

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

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 4px;
}

main:focus {
  outline: none;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.skip-link {
  position: fixed;
  z-index: 10;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  transform: translateY(-200%);
  border: 1px solid var(--text);
  background: var(--background);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

.site-header {
  border-bottom: var(--rule);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  min-height: 5rem;
  padding-block: 1.25rem;
}

.site-header__brand {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.site-header__brand {
  text-decoration: none;
}

.hero {
  border-bottom: 2px solid var(--text);
}

.hero__inner {
  display: grid;
  max-width: none;
  padding-inline: 0;
  padding-block: 0;
}

.hero__copy {
  min-width: 0;
  padding-inline: var(--gutter);
  padding-block: clamp(5rem, 9vw, 8.5rem);
}

.section-label {
  font-family: var(--font-mono);
  font-size: clamp(0.75rem, 0.4vw + 0.65rem, 0.8125rem);
  font-weight: 600;
  letter-spacing: 0.12em;
  line-height: 1.3;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 19ch;
  font-size: clamp(2.25rem, 4.8vw, 4.75rem);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 0.96;
  text-wrap: balance;
}

.hero h1 span {
  display: block;
}

.hero__summary {
  max-width: 62ch;
  margin-top: clamp(1.75rem, 3vw, 2.5rem);
  color: var(--muted);
  font-size: clamp(1.0625rem, 1vw + 0.8rem, 1.25rem);
}

.button-link {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  margin-top: 2rem;
  gap: 1rem;
  padding: 0.8rem 1.1rem;
  border: 1px solid var(--text);
  background: var(--text);
  color: var(--background);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
}

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

.button-link span {
  transition: transform 220ms ease;
}

.button-link:hover span {
  transform: translateX(0.25rem);
}

.hero-pattern {
  position: relative;
  min-height: clamp(26rem, 95vw, 36rem);
  overflow: hidden;
  border-top: var(--rule);
  background: var(--surface);
}

.hero-pattern::before {
  position: absolute;
  inset: 0;
  background-image: url("./cipher-grid.svg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: min(94%, 44rem) auto;
  content: "";
  opacity: 0.78;
  pointer-events: none;
  transition:
    opacity 500ms ease,
    transform 700ms ease;
}

.process {
  border-bottom: var(--rule);
}

.process ol {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.process li {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.process li:nth-child(even) {
  border-left: var(--rule);
}

.process li:nth-child(-n + 2) {
  border-bottom: var(--rule);
}

.process li:nth-child(odd) {
  padding-left: 0;
}

.process li span {
  color: var(--muted);
  font-size: 0.625rem;
  font-weight: 400;
}

.process li:not(:last-child)::after {
  margin-left: auto;
  color: var(--muted);
  content: "→";
}

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

.section-label {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.capability-row {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr);
  gap: 0.75rem 1rem;
  padding-block: clamp(1.75rem, 3vw, 3rem);
  border-top: var(--rule);
  transition: border-color var(--transition);
}

.capability-row:last-child {
  border-bottom: var(--rule);
}

.capability-row__index {
  grid-row: 1 / span 2;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: clamp(2.25rem, 4vw, 4.75rem);
  font-weight: 500;
  letter-spacing: -0.08em;
  line-height: 0.8;
  opacity: 0.18;
}

.capability-row h3 {
  grid-column: 2;
  font-size: clamp(1.4rem, 2.5vw, 2.5rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.08;
  transition: transform 220ms ease;
}

.capability-row__description {
  grid-column: 2;
  max-width: 52ch;
  color: var(--muted);
}

.principles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.75rem;
  padding-top: 1.5rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  line-height: 1.8;
}

.principles span {
  white-space: nowrap;
}

.contact {
  border-top: 2px solid var(--text);
  border-bottom: var(--rule);
  background: var(--surface);
}

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

.contact__content {
  display: grid;
  gap: 2.5rem;
}

.contact h3 {
  max-width: 14ch;
  font-size: clamp(2.25rem, 4.5vw, 4rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1;
  text-wrap: balance;
}

.contact__details {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: flex-start;
}

.contact__details p {
  max-width: 48ch;
  color: var(--muted);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-block: 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  line-height: 1.5;
  text-transform: uppercase;
}

.site-footer__metadata {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  overflow-wrap: anywhere;
}

@media (max-width: 30rem) {
  .button-link {
    width: 100%;
  }
}

@media (min-width: 52.5rem) {
  .hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(24rem, 5fr);
  }

  .hero__copy {
    align-self: center;
    padding-left: max(
      var(--gutter),
      calc((100vw - var(--container)) / 2 + var(--gutter))
    );
    padding-right: clamp(2rem, 5vw, 5rem);
  }

  .hero-pattern {
    min-height: 100%;
    border-top: 0;
    border-left: var(--rule);
  }

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

  .process li:nth-child(n) {
    padding-inline: clamp(1rem, 2vw, 2rem);
    border-bottom: 0;
    border-left: var(--rule);
  }

  .process li:first-child {
    padding-left: 0;
    border-left: 0;
  }

  .process li:last-child {
    padding-right: 0;
  }

  .capability-row {
    grid-template-columns: minmax(5rem, 1.25fr) minmax(0, 4.25fr) minmax(0, 6.5fr);
    gap: var(--grid-gap);
  }

  .capability-row__index {
    grid-row: auto;
  }

  .capability-row h3,
  .capability-row__description {
    grid-column: auto;
  }

  .contact__content {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--grid-gap);
  }

  .contact__details {
    align-self: end;
  }

  .site-footer__inner {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--grid-gap);
    align-items: start;
  }

  .site-footer__metadata {
    grid-column: 1 / -1;
  }
}

@media (hover: hover) {
  .hero:hover .hero-pattern::before {
    opacity: 0.92;
    transform: scale(1.018);
  }

  .capability-row:hover {
    border-top-color: var(--text);
  }

  .capability-row:hover h3 {
    transform: translateX(0.5rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  a,
  .button-link span,
  .capability-row h3,
  .hero-pattern::before {
    transition: none;
  }
}