:root {
  color-scheme: light;
}

body {
  background: var(--white);
  color: var(--carbon);
}

.site-header {
  color: var(--carbon);
}

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

.technical-hero {
  position: relative;
  overflow: hidden;
  padding-top: 7rem;
  background:
    linear-gradient(var(--line-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-light) 1px, transparent 1px),
    var(--white);
  background-size: 3.25rem 3.25rem;
}

.technical-hero::after {
  position: absolute;
  width: min(34rem, 78vw);
  aspect-ratio: 1;
  top: 4.5rem;
  right: -12rem;
  background: url("../assets/brand/logo-symbol-flat.svg") center / contain no-repeat;
  content: "";
  opacity: 0.035;
  pointer-events: none;
}

.technical-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  align-items: center;
  gap: var(--space-7);
  min-height: calc(100svh - 6rem);
  padding-block: var(--space-8);
}

.technical-hero__copy {
  max-width: 47rem;
}

.hero-code {
  width: fit-content;
  margin-bottom: var(--space-6);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--carbon);
  background: var(--white);
  font-family: var(--font-display);
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.technical-hero h1 {
  max-width: 9ch;
  margin-bottom: var(--space-5);
  font-size: var(--text-display);
}

.technical-hero__copy > p {
  max-width: 44ch;
  margin-bottom: var(--space-6);
  color: color-mix(in oklch, var(--carbon) 78%, var(--steel));
  font-size: var(--text-lead);
}

.technical-hero .button--outline {
  background: var(--white);
}

.technical-hero__drawing {
  position: relative;
  margin: var(--space-5) 0 0;
  padding: var(--space-6) var(--space-5) var(--space-5);
  border: 1px solid var(--carbon);
  background: var(--white);
}

.drawing__image {
  aspect-ratio: 1.25;
  overflow: hidden;
  background: var(--gunmetal);
}

.drawing__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.08);
  transition: filter 350ms var(--ease-out);
}

.technical-hero__drawing:hover img {
  filter: grayscale(0.25) contrast(1.05);
}

.technical-hero__drawing figcaption {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-4);
  font-size: var(--text-small);
}

.technical-hero__drawing figcaption span {
  color: var(--orange);
  font-family: var(--font-display);
  font-weight: 600;
  text-transform: uppercase;
}

.drawing__line {
  position: absolute;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: color-mix(in oklch, var(--carbon) 52%, var(--steel));
  font-family: var(--font-display);
  font-size: 0.78rem;
}

.drawing__line::before,
.drawing__line::after {
  background: currentColor;
  content: "";
}

.drawing__line--x {
  top: var(--space-3);
  left: 22%;
  width: 56%;
}

.drawing__line--x::before,
.drawing__line--x::after {
  height: 1px;
  flex: 1;
}

.drawing__line--y {
  top: 26%;
  right: var(--space-2);
  height: 43%;
  flex-direction: column;
}

.drawing__line--y::before,
.drawing__line--y::after {
  width: 1px;
  flex: 1;
}

.technical-hero__index {
  position: relative;
  z-index: 1;
  display: grid;
  border-top: 1px solid var(--carbon);
}

.technical-hero__index span {
  min-height: 3.3rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line-light);
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.service-system {
  padding-block: var(--space-9);
  background: var(--carbon);
  color: var(--white);
}

.service-system__header {
  display: grid;
  gap: var(--space-5);
  margin-bottom: var(--space-7);
}

.service-system__header h2 {
  max-width: 14ch;
  margin-bottom: 0;
  font-size: var(--text-subhead);
}

.service-system__header p {
  max-width: 46ch;
  margin-bottom: 0;
  align-self: end;
  color: var(--steel);
}

.service-tabs {
  display: grid;
  border-top: 1px solid var(--line-dark);
}

.service-tabs__list {
  display: grid;
  align-content: start;
  border-bottom: 1px solid var(--line-dark);
}

.service-tabs__list button {
  min-height: 4.2rem;
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--line-dark);
  background: transparent;
  color: var(--steel);
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  transition:
    color 180ms var(--ease-out),
    padding 180ms var(--ease-out);
}

.service-tabs__list button span {
  color: var(--orange);
  font-size: 0.82rem;
}

.service-tabs__list button[aria-selected="true"] {
  padding-inline: var(--space-4);
  background: var(--orange);
  color: var(--carbon);
}

.service-tabs__list button[aria-selected="true"] span {
  color: var(--carbon);
}

.service-panel {
  min-height: 25rem;
  padding-block: var(--space-7);
}

.service-panel[hidden] {
  display: none;
}

.service-panel__type {
  margin-bottom: var(--space-5);
  color: var(--orange);
  font-family: var(--font-display);
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.service-panel h3 {
  max-width: 12ch;
  margin-bottom: var(--space-5);
  font-size: clamp(2.4rem, 7vw, 4.5rem);
}

.service-panel p:not(.service-panel__type) {
  max-width: 58ch;
  color: color-mix(in oklch, var(--white) 80%, var(--steel));
}

.service-panel ul {
  margin: var(--space-7) 0 0;
  padding: 0;
  list-style: none;
}

.service-panel li {
  padding-block: var(--space-3);
  border-top: 1px solid var(--line-dark);
}

.service-panel li::before {
  margin-right: var(--space-3);
  color: var(--orange);
  content: "+";
}

.work-index {
  padding-block: var(--space-9);
}

.work-index__grid {
  display: grid;
  gap: var(--space-7);
}

.work-index header > p:last-child {
  max-width: 47ch;
  color: color-mix(in oklch, var(--carbon) 76%, var(--steel));
}

.work-index__items {
  display: grid;
  gap: var(--space-6);
}

.work-index figure {
  margin: 0;
}

.work-index figure + figure {
  padding-top: var(--space-6);
  border-top: 1px solid var(--line-light);
}

.work-index figure img {
  width: 100%;
  aspect-ratio: 1.55;
  object-fit: cover;
  filter: saturate(0.72);
}

.work-index figcaption {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3) var(--space-4);
  margin-top: var(--space-3);
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
}

.work-index figcaption strong {
  color: var(--orange);
}

.work-index figcaption span {
  grid-column: 2;
  color: color-mix(in oklch, var(--carbon) 62%, var(--steel));
  font-family: var(--font-body);
  font-size: var(--text-small);
  font-weight: 400;
}

.method {
  padding-block: var(--space-9);
  border-top: 1px solid var(--carbon);
}

.method__grid {
  display: grid;
  gap: var(--space-7);
}

.method__steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.method__steps li {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: var(--space-4);
  padding-block: var(--space-5);
  border-top: 1px solid var(--line-light);
}

.method__steps > li > span {
  color: var(--orange);
  font-family: var(--font-display);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.method__steps h3 {
  margin-bottom: var(--space-2);
  font-size: 1.85rem;
}

.method__steps p {
  max-width: 58ch;
  margin-bottom: 0;
  color: color-mix(in oklch, var(--carbon) 75%, var(--steel));
}

.technical-proof {
  padding-block: var(--space-8);
  background: var(--orange);
}

.technical-proof__grid {
  display: grid;
  align-items: center;
  gap: var(--space-7);
}

.technical-proof__grid > img {
  width: 5rem;
}

.technical-proof .quote figcaption {
  color: color-mix(in oklch, var(--carbon) 68%, transparent);
}

.technical-proof__grid > p {
  margin-bottom: 0;
}

.technical-proof__grid > p strong {
  font-family: var(--font-display);
  font-size: 2rem;
}

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

.site-footer .site-footer__meta,
.site-footer__legal {
  color: var(--steel);
}

@media (min-width: 48rem) {
  .technical-hero__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(22rem, 0.72fr);
  }

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

  .technical-hero__index span {
    padding-inline: var(--space-4);
    border-right: 1px solid var(--line-light);
  }

  .service-system__header,
  .work-index__grid,
  .method__grid {
    grid-template-columns: minmax(0, 0.75fr) minmax(24rem, 1fr);
  }

  .service-tabs {
    grid-template-columns: minmax(15rem, 0.45fr) minmax(0, 1fr);
  }

  .service-tabs__list {
    padding-right: var(--space-6);
    border-right: 1px solid var(--line-dark);
    border-bottom: 0;
  }

  .service-panel {
    padding: var(--space-7);
  }

  .service-panel ul {
    columns: 2;
    column-gap: var(--space-6);
  }

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

  .work-index figure + figure {
    padding-top: 0;
    padding-left: var(--space-6);
    border-top: 0;
    border-left: 1px solid var(--line-light);
  }

  .technical-proof__grid {
    grid-template-columns: 6rem minmax(0, 1fr) minmax(13rem, 0.4fr);
  }
}

@media (min-width: 68rem) {
  .site-nav {
    color: var(--carbon);
  }

  .technical-hero__drawing {
    margin-top: 0;
  }
}