:root {
  color-scheme: dark;
  --ink: #f2f1ed;
  --paper: #0a0a0a;
  --paper-raised: #111111;
  --muted: #aaa8a1;
  --quiet: #73716c;
  --line: #30302e;
  --line-strong: #66645f;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --page: min(100% - 2rem, 78rem);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background-image: url("/assets/sketches/grain.svg");
  background-attachment: fixed;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  text-decoration-color: var(--muted);
}

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

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

button,
select {
  cursor: pointer;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 0.85rem;
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-200%);
}

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

.site-header,
.site-footer,
.section,
.hero,
.page-hero {
  width: var(--page);
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 5.5rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-decoration: none;
  text-transform: lowercase;
}

.brand::before {
  width: 0.7rem;
  height: 0.7rem;
  border: 1px solid var(--ink);
  content: "";
  transform: rotate(-7deg);
}

.site-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2.25rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

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

.site-nav a[aria-current="page"]::before {
  content: "[";
}

.site-nav a[aria-current="page"]::after {
  content: "]";
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
  gap: clamp(2rem, 7vw, 7rem);
  align-items: center;
  min-height: calc(100vh - 5.5rem);
  min-height: calc(100svh - 5.5rem);
  padding-block: clamp(4rem, 10vw, 9rem);
}

.eyebrow,
.section-label,
.kicker {
  margin: 0 0 1.5rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.eyebrow::before,
.section-label::before,
.kicker::before {
  content: "01 / ";
  color: var(--quiet);
}

.display {
  max-width: 13ch;
  margin: 0;
  font-size: clamp(3.25rem, 8.2vw, 7.6rem);
  font-weight: 540;
  letter-spacing: -0.065em;
  line-height: 0.9;
}

.display em,
.page-title em {
  font-family: var(--serif);
  font-weight: 400;
}

.lede {
  max-width: 41rem;
  margin: 2rem 0 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  line-height: 1.45;
}

.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.72rem 1.1rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

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

.button-secondary {
  border-color: var(--line-strong);
  background: transparent;
  color: var(--ink);
}

.button-secondary:hover {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--paper);
}

.hero-sketch {
  position: relative;
  width: min(100%, 29rem);
  justify-self: end;
}

.hero-sketch::after {
  position: absolute;
  right: 3%;
  bottom: 8%;
  width: 28%;
  border-bottom: 1px solid var(--quiet);
  content: "human judgment";
  color: var(--quiet);
  font-family: var(--serif);
  font-size: 0.78rem;
  font-style: italic;
  transform: rotate(-4deg);
}

.section {
  padding-block: clamp(5rem, 10vw, 9rem);
  border-top: 1px solid var(--line);
}

.section-label::before {
  content: "02 / ";
}

.section-label[data-index="03"]::before {
  content: "03 / ";
}

.section-label[data-index="04"]::before {
  content: "04 / ";
}

.section-label[data-index="05"]::before {
  content: "05 / ";
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(12rem, 0.6fr) minmax(0, 1.4fr);
  gap: clamp(2.5rem, 8vw, 8rem);
}

.section-title {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2rem, 4vw, 4rem);
  font-weight: 520;
  letter-spacing: -0.045em;
  line-height: 1;
}

.section-title em {
  font-family: var(--serif);
  font-weight: 400;
}

.body-copy {
  max-width: 48rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.6vw, 1.18rem);
}

.body-copy p {
  margin: 0 0 1.25rem;
}

.body-copy strong {
  color: var(--ink);
  font-weight: 540;
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 4rem;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.expertise-card {
  min-height: 17rem;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.expertise-index {
  display: block;
  margin-bottom: 4rem;
  color: var(--quiet);
  font-family: var(--serif);
  font-size: 0.88rem;
  font-style: italic;
}

.expertise-card h3 {
  margin: 0 0 0.8rem;
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  font-weight: 520;
  letter-spacing: -0.025em;
}

.expertise-card p {
  max-width: 34rem;
  margin: 0;
  color: var(--muted);
}

.method {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 4rem;
  counter-reset: method;
}

.method article {
  position: relative;
  min-height: 18rem;
  padding: 2rem;
  border-top: 1px solid var(--line-strong);
  border-right: 1px solid var(--line);
  counter-increment: method;
}

.method article:last-child {
  border-right: 0;
}

.method article::before {
  display: block;
  margin-bottom: 5rem;
  content: "0" counter(method);
  color: var(--quiet);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.method h3 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  font-weight: 560;
}

.method p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.statement {
  padding: clamp(2rem, 6vw, 5rem);
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
}

.statement blockquote {
  max-width: 24ch;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2rem, 5vw, 4.8rem);
  line-height: 1.05;
}

.statement p {
  max-width: 42rem;
  margin: 2rem 0 0;
  color: var(--muted);
}

.page-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 0.55fr);
  gap: clamp(2rem, 8vw, 8rem);
  align-items: end;
  min-height: 64vh;
  padding-block: clamp(5rem, 11vw, 10rem);
}

.page-title {
  max-width: 10ch;
  margin: 0;
  font-size: clamp(3.5rem, 9vw, 8rem);
  font-weight: 530;
  letter-spacing: -0.065em;
  line-height: 0.9;
}

.page-intro {
  max-width: 31rem;
  margin: 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.1rem, 2vw, 1.45rem);
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 4rem;
  background: var(--line);
  border: 1px solid var(--line);
}

.principles article {
  min-height: 19rem;
  padding: 2rem;
  background: var(--paper);
}

.principles h3 {
  margin: 0 0 4rem;
  font-family: var(--serif);
  font-size: 1.3rem;
  font-style: italic;
  font-weight: 400;
}

.principles p {
  margin: 0;
  color: var(--muted);
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(13rem, 0.55fr) minmax(0, 1fr);
  gap: clamp(3rem, 9vw, 9rem);
}

.contact-note {
  max-width: 23rem;
  color: var(--muted);
}

.contact-note a {
  color: var(--ink);
}

.form {
  display: grid;
  gap: 1.5rem;
  max-width: 46rem;
}

.field {
  display: grid;
  gap: 0.55rem;
}

.field label,
.field legend {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
}

.field input,
.field select {
  min-height: 3.4rem;
}

.field textarea {
  min-height: 11rem;
  padding-block: 0.8rem;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--ink);
  outline: 0;
}

.field select option {
  background: var(--paper);
}

.form-warning {
  margin: 0;
  padding: 1rem;
  border-left: 2px solid var(--line-strong);
  color: var(--muted);
  font-size: 0.83rem;
}

.form-status {
  min-height: 1.5rem;
  margin: 0;
  font-size: 0.9rem;
}

.form-status[data-state="error"] {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-style: wavy;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: end;
  padding-block: 3rem;
  border-top: 1px solid var(--line);
  color: var(--quiet);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.site-footer p {
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    gap: 1.5rem;
    padding-block: 1.35rem;
  }

  .site-nav ul {
    align-items: flex-end;
    flex-direction: column;
    gap: 0.45rem;
  }

  .hero,
  .page-hero,
  .section-grid,
  .contact-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-sketch {
    width: min(80%, 25rem);
    justify-self: start;
  }

  .page-hero {
    min-height: auto;
  }

  .expertise-grid,
  .principles {
    grid-template-columns: 1fr;
  }

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

  .method article {
    min-height: auto;
    border-right: 0;
  }

  .method article::before {
    margin-bottom: 2.5rem;
  }

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

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

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

@media print {
  :root {
    color-scheme: light;
    --ink: #000000;
    --paper: #ffffff;
    --paper-raised: #ffffff;
    --muted: #333333;
    --quiet: #555555;
    --line: #cccccc;
    --line-strong: #777777;
  }

  body {
    background: none;
  }

  .site-nav,
  .hero-actions,
  .section-actions,
  .form {
    display: none;
  }
}