@font-face {
  font-family: "Inter";
  src: url("../fonts/inter-variable.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

@font-face {
  font-family: "Newsreader";
  src: url("../fonts/newsreader-variable.woff2") format("woff2");
  font-style: normal;
  font-weight: 200 800;
  font-display: swap;
}

/* Variables */
:root {
  color-scheme: light dark;
  --color-bg: #F5F6F5;
  --color-bg-secondary: #ECEEED;
  --color-text: #121212;
  --color-text-muted: #626866;
  --color-border: #D1D5D3;
  --color-accent: #3A8B8C;
  --color-accent-text: #2F7071;
  --color-accent-hover: #265C5D;
  --color-inverse-bg: #121212;
  --color-inverse-text: #F1F1ED;
  --color-inverse-muted: #A8AEAB;
  --color-inverse-border: #3A403E;
  --color-contact-bg: #3A8B8C;
  --color-contact-text: #121212;
  --color-contact-muted: #121212;
  --color-contact-border: #203839;
  --gutter: clamp(1.25rem, 4vw, 4.5rem);
  --section-space: clamp(5rem, 9vw, 8rem);
}

/* Base */
* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

/* Typography */
h1,
.lead,
.approach h2,
.background-copy,
.contact h2 {
  font-family: "Newsreader", serif;
  font-weight: 400;
}

h1 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(4.25rem, 12vw, 11.5rem);
  letter-spacing: -.055em;
  line-height: .84;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: .75rem;
  margin: 0 0 1.6rem;
  color: var(--color-accent-text);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 1.75rem;
  height: 2px;
  background: currentColor;
  content: "";
}

.role {
  margin: 0;
  font-size: clamp(1rem, 1.6vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1.25;
}

.lead {
  max-width: 34ch;
  margin: 0;
  font-size: clamp(2rem, 4.2vw, 4.15rem);
  letter-spacing: -.035em;
  line-height: 1.08;
}

.body-copy {
  max-width: 46rem;
  margin: 2rem 0 0;
  color: var(--color-text-muted);
  font-size: clamp(1rem, 1.4vw, 1.2rem);
}

/* Layout */
.shell {
  width: min(100%, 1600px);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--section-space);
  border-top: 1px solid var(--color-border);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(12rem, 1fr) minmax(0, 2.2fr);
  gap: clamp(2rem, 7vw, 8rem);
}

.section-label {
  margin: 0;
  color: var(--color-text-muted);
  font: 700 .72rem/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.section-label span {
  display: inline-block;
  min-width: 2.5rem;
  color: var(--color-accent-text);
}

/* Header and navigation */
.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5rem;
  border-bottom: 1px solid var(--color-border);
}

.mark {
  font-weight: 700;
  letter-spacing: -.04em;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: clamp(1rem, 3vw, 2.5rem);
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.nav a,
.text-link,
.hero-links a {
  text-decoration-color: var(--color-border);
  text-decoration-thickness: 1px;
  text-underline-offset: .35em;
}

.nav a:hover,
.text-link:hover,
.hero-links a:hover {
  color: var(--color-accent-hover);
  text-decoration-color: currentColor;
}

/* Hero */
.hero {
  display: flex;
  align-items: flex-end;
  min-height: 100svh;
  padding-top: 8rem;
  padding-bottom: clamp(2rem, 5vw, 4.5rem);
}

.hero-inner { width: 100%; }

.hero-bottom {
  display: grid;
  grid-template-columns: minmax(12rem, .75fr) minmax(20rem, 1.4fr) auto;
  gap: clamp(2rem, 5vw, 6rem);
  align-items: end;
  margin-top: clamp(3.5rem, 9vh, 7rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.intro { max-width: 42rem; }

.intro p { margin: 0; }

.intro > p:first-child {
  font-size: clamp(1.25rem, 2.2vw, 2rem);
  letter-spacing: -.025em;
  line-height: 1.25;
}

.intro-support {
  margin-top: .65rem !important;
  color: var(--color-text-muted);
  font-size: clamp(.9rem, 1.15vw, 1.05rem);
}

.availability {
  display: flex;
  align-items: center;
  gap: .55rem;
  margin-top: 1.15rem !important;
  color: var(--color-accent-text);
  font-size: .8rem;
  font-weight: 700;
}

.availability::before {
  width: .45rem;
  height: .45rem;
  border-radius: 50%;
  background: currentColor;
  content: "";
}

.hero-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .55rem;
  font-size: .8rem;
  font-weight: 700;
}

/* Services and technology */
.services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.service {
  min-height: 15rem;
  padding: 1.4rem clamp(1.25rem, 3vw, 2.5rem) 2rem 0;
  border-top: 1px solid var(--color-border);
}

.service:nth-child(even) {
  padding-right: 0;
  padding-left: clamp(1.25rem, 3vw, 2.5rem);
  border-left: 1px solid var(--color-border);
}

.service-number {
  display: block;
  margin-bottom: 3.5rem;
  color: var(--color-accent-text);
  font: 700 .7rem/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.service h3 {
  margin: 0 0 .75rem;
  font-size: clamp(1.15rem, 1.8vw, 1.5rem);
  letter-spacing: -.015em;
}

.service p {
  max-width: 29rem;
  margin: 0;
  color: var(--color-text-muted);
}

.technology-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
  list-style: none;
}

.technology-list li {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
  font-size: clamp(1.35rem, 2.3vw, 2rem);
  letter-spacing: -.015em;
}

.technology-list li:nth-child(even) {
  padding-left: clamp(1.25rem, 3vw, 2.5rem);
  border-left: 1px solid var(--color-border);
}

/* Approach */
.approach {
  padding-block: clamp(5rem, 12vw, 11rem);
  background: var(--color-inverse-bg);
  color: var(--color-inverse-text);
}

.approach .eyebrow { color: var(--color-accent); }

.approach h2 {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(3.3rem, 8.8vw, 8.5rem);
  letter-spacing: -.05em;
  line-height: .9;
}

.approach-detail {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(3rem, 8vw, 9rem);
  margin-top: clamp(4rem, 9vw, 8rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-inverse-border);
}

.approach-detail > p {
  max-width: 31rem;
  margin: 0;
  color: var(--color-inverse-muted);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
}

.principles {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: principles;
}

.principles li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--color-inverse-border);
  counter-increment: principles;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  letter-spacing: -.01em;
}

.principles li::before {
  color: var(--color-accent);
  content: "0" counter(principles);
  font: 700 .7rem/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .08em;
}

/* Background and contact */
.background-copy {
  max-width: 38ch;
  margin: 0;
  font-size: clamp(1.65rem, 3.2vw, 3rem);
  letter-spacing: -.025em;
  line-height: 1.2;
}

.background .text-link {
  display: inline-block;
  margin-top: 2.5rem;
  font-size: .85rem;
  font-weight: 700;
}

.contact {
  padding-block: clamp(5rem, 10vw, 8rem) 2rem;
  background: var(--color-contact-bg);
  color: var(--color-contact-text);
}

.contact .eyebrow { color: var(--color-contact-muted); }

.contact h2 {
  max-width: 11ch;
  margin: 0;
  font-size: clamp(4rem, 11vw, 10.5rem);
  letter-spacing: -.055em;
  line-height: .85;
}

.contact-copy {
  max-width: 42rem;
  margin: clamp(2rem, 4vw, 3.5rem) 0 0;
  color: var(--color-contact-muted);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
}

.contact-links {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  margin-top: clamp(4rem, 10vw, 9rem);
  border-top: 1px solid var(--color-contact-border);
}

.contact-links a {
  min-width: 0;
  padding: 1.3rem 1rem 1.3rem 0;
  overflow-wrap: anywhere;
  border-bottom: 1px solid var(--color-contact-border);
  font-weight: 700;
  text-decoration: none;
}

.contact-links a + a {
  padding-left: 1rem;
  border-left: 1px solid var(--color-contact-border);
}

.contact-links a::after {
  float: right;
  content: "↗";
  font-weight: 400;
}

.contact-links a:first-child::after { content: "→"; }

.footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 5rem;
  color: var(--color-contact-muted);
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* Responsive */
@media (max-width: 820px) {
  .hero {
    min-height: auto;
    padding-top: 10rem;
  }

  .hero-bottom,
  .section-grid,
  .approach-detail {
    grid-template-columns: 1fr;
  }

  .hero-bottom { gap: 2rem; }

  .hero-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1rem 1.5rem;
  }

  .section-grid { gap: 3rem; }
  .services { grid-template-columns: 1fr; }

  .service {
    min-height: auto;
    padding: 1.4rem 0 2rem;
  }

  .service:nth-child(even) {
    padding-left: 0;
    border-left: 0;
  }

  .service-number { margin-bottom: 2rem; }
  .contact-links { grid-template-columns: 1fr; }

  .contact-links a + a {
    padding-left: 0;
    border-left: 0;
  }
}

@media (max-width: 520px) {
  .nav-links li:not(:last-child) { display: none; }

  h1 { font-size: clamp(4rem, 22vw, 7rem); }
  .technology-list { grid-template-columns: 1fr; }

  .technology-list li:nth-child(even) {
    padding-left: 0;
    border-left: 0;
  }

  .footer {
    flex-direction: column;
    gap: .5rem;
  }
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #121212;
    --color-bg-secondary: #1B1D1D;
    --color-text: #F1F1ED;
    --color-text-muted: #A8AEAB;
    --color-border: #3A403E;
    --color-accent: #3A8B8C;
    --color-accent-text: #78B6B7;
    --color-accent-hover: #82BFC0;
    --color-inverse-bg: #121212;
    --color-inverse-text: #F1F1ED;
    --color-inverse-muted: #A8AEAB;
    --color-inverse-border: #3A403E;
    --color-contact-bg: #3A8B8C;
    --color-contact-text: #121212;
    --color-contact-muted: #121212;
    --color-contact-border: #203839;
  }
}

/* Accessibility */
.skip {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 20;
  padding: .65rem .9rem;
  background: var(--color-text);
  color: var(--color-bg);
  transform: translateY(-200%);
}

.skip:focus { transform: none; }

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 5px;
}

.contact a:focus-visible,
.approach a:focus-visible {
  outline-color: var(--color-contact-text);
}

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