:root {
  --paper: #f8f7f3;
  --white: #fffdfa;
  --ink: #202126;
  --muted: #6f6f6b;
  --line: #d7d1c8;
  --line-strong: #bfb7ac;
  --accent: #b7331e;
  --accent-dark: #962815;
  --display: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Georgia, serif;
  --sans: "Avenir Next", Avenir, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --gutter: clamp(24px, 5vw, 92px);
  --section-y: clamp(88px, 12vw, 190px);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 18px;
  line-height: 1.6;
  text-rendering: geometricPrecision;
  -webkit-font-smoothing: antialiased;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 92px;
  padding: 0 var(--gutter);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 253, 250, 0.94);
  backdrop-filter: blur(18px);
}

.brand,
.footer-brand {
  font-family: var(--sans);
  font-size: clamp(25px, 2.2vw, 34px);
  font-weight: 700;
  letter-spacing: 0.34em;
}

.nav-link {
  color: var(--accent);
  font-size: 17px;
  font-weight: 500;
  transition: color 180ms ease;
}

.nav-link:hover,
.site-footer a:hover {
  color: var(--accent-dark);
}

.section-shell {
  padding: var(--section-y) var(--gutter);
  border-bottom: 1px solid var(--line);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.72fr);
  gap: clamp(36px, 5.5vw, 96px);
  min-height: calc(100vh - 92px);
  padding-top: clamp(72px, 8vw, 128px);
  padding-bottom: clamp(64px, 7vw, 112px);
  overflow: hidden;
  background: var(--white);
}

.hero-copy {
  align-self: start;
  max-width: 760px;
}

h1 {
  max-width: 760px;
  font-family: var(--sans);
  font-size: clamp(58px, 6.3vw, 116px);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.hero-lede {
  margin-top: clamp(24px, 3.4vw, 38px);
  font-size: clamp(26px, 2.2vw, 36px);
  font-weight: 500;
  line-height: 1.24;
  letter-spacing: -0.035em;
}

.hero-body {
  max-width: 640px;
  margin-top: 22px;
  color: var(--muted);
  font-size: clamp(18px, 1.45vw, 23px);
  line-height: 1.55;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 58px;
  margin-top: 32px;
  padding: 0 34px;
  background: var(--accent);
  color: var(--white);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  transition: background 180ms ease, transform 180ms ease;
}

.button:hover {
  background: var(--accent-dark);
  transform: translateY(-1px);
}

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

.hero-geometry {
  position: relative;
  align-self: stretch;
  min-height: 520px;
  opacity: 0.8;
}

.geo-line,
.geo-circle,
.geo-hatch,
.geo-dot {
  position: absolute;
  display: block;
}

.geo-line {
  background: var(--line-strong);
}

.geo-line-a {
  right: 16%;
  top: 8%;
  width: 1px;
  height: 86%;
}

.geo-line-b {
  right: -8%;
  top: 46%;
  width: 92%;
  height: 1px;
}

.geo-line-c {
  left: 12%;
  top: 14%;
  width: 1px;
  height: 74%;
  border-left: 1px dashed var(--line-strong);
  background: transparent;
}

.geo-circle-large {
  right: -8%;
  top: 12%;
  width: min(42vw, 580px);
  aspect-ratio: 1;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.geo-circle-small {
  right: 24%;
  top: 47%;
  width: min(17vw, 240px);
  aspect-ratio: 1;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transform: translateY(-50%);
}

.geo-hatch {
  right: 25%;
  top: 41%;
  width: 150px;
  height: 72px;
  border: 1px solid var(--line);
  background: transparent;
}

.geo-dot {
  left: 12%;
  top: 46%;
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--line-strong);
  transform: translate(-4px, -4px);
}

.chapter-grid {
  display: grid;
  grid-template-columns: 76px minmax(300px, 0.95fr) minmax(320px, 0.88fr);
  gap: clamp(28px, 5vw, 72px);
  background: var(--paper);
}

.chapter-number {
  color: var(--accent);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.chapter-number::after {
  content: "";
  display: block;
  width: 1px;
  height: 140px;
  margin: 28px auto 0 10px;
  background: var(--accent);
}

.chapter-title,
.section-heading h2,
.split-copy h2,
.process-intro h2,
.final-inner h2 {
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.96;
}

.chapter-title {
  max-width: 700px;
  font-size: clamp(68px, 8vw, 138px);
}

.chapter-copy {
  align-self: center;
  padding-left: clamp(28px, 4vw, 72px);
  border-left: 1px solid var(--line-strong);
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.55;
  letter-spacing: -0.026em;
}

.chapter-copy p + p {
  margin-top: 28px;
}

.disciplines,
.results,
.process {
  background: var(--white);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.78fr);
  gap: clamp(34px, 7vw, 100px);
  align-items: end;
  margin-bottom: clamp(52px, 6vw, 80px);
}

.section-heading.wide {
  display: block;
  max-width: 920px;
}

.section-label {
  margin-bottom: 28px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.section-heading .section-label {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: -4px;
}

.section-heading .section-label::after {
  content: "";
  width: min(240px, 22vw);
  height: 1px;
  background: var(--accent);
}

.section-heading h2,
.split-copy h2,
.process-intro h2 {
  font-size: clamp(62px, 7.2vw, 128px);
}

.section-heading > p:last-child {
  align-self: center;
  max-width: 560px;
  color: var(--ink);
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.35;
  letter-spacing: -0.03em;
}

.discipline-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border: 1px solid var(--line);
}

.discipline-card {
  min-height: 470px;
  padding: clamp(28px, 3vw, 48px) clamp(24px, 2.4vw, 34px);
  border-right: 1px solid var(--line);
}

.discipline-card:last-child {
  border-right: 0;
}

.card-index,
.case-index {
  color: var(--accent);
  font-size: 20px;
  letter-spacing: 0.08em;
}

.card-index::after,
.process-number::before {
  content: "";
  display: block;
  width: 58px;
  height: 1px;
  margin: 14px 0 60px;
  background: var(--accent);
}

.discipline-card h3 {
  min-height: 112px;
  color: var(--accent);
  font-family: var(--display);
  font-size: clamp(30px, 2.45vw, 42px);
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 1.02;
}

.discipline-card h3::after {
  content: "";
  display: block;
  width: 100%;
  height: 1px;
  margin: 30px 0 28px;
  background: var(--line-strong);
}

.discipline-card p:last-child {
  color: #343538;
  font-size: clamp(16px, 1.2vw, 19px);
  line-height: 1.65;
}

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.case-study {
  padding: clamp(40px, 5vw, 68px) clamp(28px, 4vw, 56px);
}

.case-study + .case-study {
  border-left: 1px solid var(--line-strong);
}

.case-study h3 {
  margin-top: 18px;
  font-family: var(--display);
  font-size: clamp(50px, 5.4vw, 86px);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 1;
}

.case-pair {
  display: grid;
  grid-template-columns: 0.72fr 1fr;
  gap: clamp(24px, 3.6vw, 52px);
  margin-top: 44px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.case-label {
  margin-bottom: 14px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.case-pair p:not(.case-label) {
  color: #343538;
  font-size: clamp(17px, 1.35vw, 21px);
  line-height: 1.62;
}

.results-close {
  margin-top: 62px;
  padding-top: 46px;
  border-top: 1px solid var(--line);
  font-family: var(--display);
  font-size: clamp(34px, 3.5vw, 58px);
  line-height: 1.16;
  letter-spacing: -0.045em;
}

.results-close span {
  color: var(--accent);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(320px, 0.88fr) minmax(320px, 0.92fr);
  gap: clamp(44px, 8vw, 128px);
  background: var(--paper);
}

.split-copy {
  padding-right: clamp(28px, 6vw, 92px);
  border-right: 1px solid var(--line-strong);
}

.split-copy h2 {
  max-width: 720px;
}

.split-copy h2 em {
  color: var(--accent);
  font-style: italic;
}

.split-copy p:not(.section-label) {
  max-width: 620px;
  margin-top: 36px;
  color: var(--muted);
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.45;
  letter-spacing: -0.03em;
}

.industry-list {
  align-self: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.industry-list li {
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--display);
  font-size: clamp(25px, 2.2vw, 37px);
  letter-spacing: 0.16em;
  line-height: 1.1;
  text-transform: uppercase;
}

.industry-list li:first-child {
  border-top: 1px solid var(--line);
}

.process-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.9fr);
  gap: clamp(44px, 8vw, 120px);
  align-items: start;
  margin-bottom: 72px;
}

.process-intro .section-label {
  grid-column: 1 / -1;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.process-card {
  min-height: 360px;
  padding: clamp(30px, 3vw, 46px) clamp(22px, 2.5vw, 34px);
  border-right: 1px solid var(--line-strong);
}

.process-card:last-child {
  border-right: 0;
}

.process-number {
  font-family: var(--display);
  font-size: clamp(54px, 5vw, 84px);
  line-height: 0.9;
}

.process-card h3 {
  margin-top: 34px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.process-card p:not(.process-number):not(.section-label) {
  margin-top: 18px;
  color: #3e3f42;
  font-size: clamp(16px, 1.22vw, 19px);
  line-height: 1.65;
}

.process-card.principle {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.process-card.principle p:last-child {
  color: var(--ink);
  font-family: var(--display);
  font-size: clamp(28px, 2.5vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.final-cta {
  background: var(--paper);
  text-align: center;
}

.final-inner {
  max-width: 860px;
  margin: 0 auto;
}

.final-inner h2 {
  font-size: clamp(64px, 8.4vw, 136px);
}

.final-inner h2::after {
  content: "";
  display: block;
  width: 92px;
  height: 2px;
  margin: 36px auto 34px;
  background: var(--accent);
}

.final-inner p {
  max-width: 620px;
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(22px, 2vw, 30px);
  line-height: 1.45;
  letter-spacing: -0.03em;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 28px;
  align-items: center;
  padding: 48px var(--gutter) 60px;
  background: var(--paper);
  color: var(--muted);
  font-size: 16px;
}

.site-footer .footer-brand {
  color: var(--ink);
}

.site-footer a {
  color: var(--muted);
}

.site-footer p:last-child {
  justify-self: end;
}

.reveal {
  transform: translateY(18px);
  opacity: 0;
  transition: opacity 700ms ease, transform 700ms ease;
}

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

@media (max-width: 1180px) {
  .hero,
  .chapter-grid,
  .section-heading,
  .split-section,
  .process-intro {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-geometry {
    min-height: 360px;
  }

  .chapter-number::after {
    height: 64px;
  }

  .chapter-copy,
  .split-copy {
    padding-left: 0;
    padding-right: 0;
    border-left: 0;
    border-right: 0;
  }

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

  .discipline-card,
  .process-card {
    border-bottom: 1px solid var(--line);
  }

  .discipline-card:nth-child(2n),
  .process-card:nth-child(2n) {
    border-right: 0;
  }

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

  .case-study + .case-study {
    border-left: 0;
    border-top: 1px solid var(--line-strong);
  }
}

@media (max-width: 720px) {
  :root {
    --gutter: 22px;
    --section-y: 76px;
  }

  body {
    font-size: 16px;
  }

  .site-header {
    min-height: 76px;
  }

  .brand,
  .footer-brand {
    font-size: 22px;
    letter-spacing: 0.24em;
  }

  .nav-link {
    font-size: 15px;
  }

  h1 {
    font-size: clamp(48px, 16vw, 76px);
  }

  .hero {
    gap: 28px;
  }

  .hero-geometry {
    min-height: 280px;
  }

  .button {
    width: 100%;
  }

  .chapter-title,
  .section-heading h2,
  .split-copy h2,
  .process-intro h2,
  .final-inner h2 {
    font-size: clamp(54px, 16vw, 78px);
  }

  .chapter-copy,
  .section-heading > p:last-child,
  .split-copy p:not(.section-label),
  .final-inner p {
    font-size: 20px;
  }

  .discipline-grid,
  .process-grid,
  .case-pair {
    grid-template-columns: 1fr;
  }

  .discipline-card,
  .process-card {
    min-height: auto;
    border-right: 0;
  }

  .discipline-card h3 {
    min-height: auto;
  }

  .industry-list li {
    font-size: 21px;
    letter-spacing: 0.11em;
  }

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

  .site-footer p:last-child {
    justify-self: start;
  }
}

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

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

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