:root {
  --ink: #272522;
  --muted: #77716b;
  --faint: #77716b;
  --line: #e7e2dc;
  --accent: #4054d6;
  --paper: #fff;
  color-scheme: light;
}

* { box-sizing: border-box; }

img {
  max-width: 100%;
  height: auto;
}

html { scroll-behavior: smooth; }

body {
  margin: 0;
  padding: 0;
  max-width: none;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  font-size: 18px;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { text-decoration-thickness: 2px; }

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

.site-header,
main,
.site-footer {
  width: min(610px, calc(100% - 48px));
  margin-right: auto;
  margin-left: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding-top: 48px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 13px;
}

.site-header a { color: inherit; text-decoration: none; }
.site-header a:hover { color: var(--accent); }
.site-header a[aria-current="page"] { color: var(--ink); }
.site-mark {
  display: block;
  width: 48px;
  height: 48px;
  margin-left: -5px;
  opacity: .9;
  transition: opacity 150ms ease, transform 150ms ease;
}

.site-mark img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.site-mark:hover,
.site-mark:focus-visible {
  opacity: 1;
  transform: translateY(-1px);
}

.site-mark:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.site-header nav { display: flex; gap: 21px; }

main { padding: 116px 0 108px; }

.introduction {
  max-width: 590px;
}

h1,
p { margin-top: 0; }

h1 {
  margin-bottom: 34px;
  font-size: clamp(40px, 5vw, 52px);
  font-weight: 500;
  letter-spacing: -.037em;
  line-height: 1.08;
}

.lead {
  max-width: 580px;
  margin-bottom: 0;
  color: #4e4a46;
  font-size: 20px;
  line-height: 1.56;
}

.portrait {
  float: left;
  width: 92px;
  margin: 6px 24px 10px 0;
}

.portrait img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 25%;
}

.endorsement {
  max-width: 530px;
  margin-top: 112px;
  padding-top: 31px;
  border-top: 1px solid var(--line);
}

blockquote { margin: 0; }

blockquote p {
  margin-bottom: 20px;
  color: #403c38;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 23px;
  line-height: 1.48;
}

.endorsement-source {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .02em;
  line-height: 1.45;
}

.endorsement-source img {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  object-fit: cover;
}

.endorsement-source strong {
  color: #59544f;
  font-weight: 600;
}

.current-work {
  max-width: 530px;
  margin: 76px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.current-work strong {
  color: var(--ink);
  font-weight: 600;
}

.selected-writing {
  margin-top: 104px;
}

.selected-writing h2 {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.essay-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.essay-list li { border-bottom: 1px solid var(--line); }

.essay-list a {
  display: block;
  padding: 22px 2px 23px;
  color: inherit;
  text-decoration: none;
}

.essay-title,
.essay-description { display: block; }

.essay-title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  line-height: 1.34;
  transition: color 150ms ease;
}

.essay-description {
  margin-top: 5px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
}

.essay-list a:hover .essay-title,
.essay-list a:focus-visible .essay-title { color: var(--accent); }

.essay-list a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 0 0 48px;
  color: var(--faint);
  font-size: 12px;
}

.site-footer a { color: inherit; }

/* Work-page wireframe */

.work-page { padding-top: 108px; }

.page-introduction {
  max-width: 590px;
  margin-bottom: 126px;
}

.eyebrow {
  margin-bottom: 15px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.page-introduction h1 { margin-bottom: 29px; }

.project-story {
  margin-top: 118px;
  padding-top: 35px;
  border-top: 1px solid var(--line);
}

.project-story-primary { margin-top: 0; }

.project-heading { margin-bottom: 38px; }

.project-heading h2,
.work-close h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  letter-spacing: -.016em;
}

.project-heading h2 {
  font-size: 38px;
  line-height: 1.16;
}

.project-premise {
  max-width: 540px;
  margin: 14px 0 0;
  color: #4e4a46;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 23px;
  line-height: 1.42;
}

.project-body {
  max-width: 570px;
  color: #4e4a46;
}

.project-body p { margin-bottom: 24px; }

.project-feature,
.media-card {
  margin: 0;
}

.project-feature { margin-top: 47px; }

.project-feature a,
.media-card a {
  display: block;
  color: inherit;
}

.project-feature img,
.media-card img {
  display: block;
  width: 100%;
  background: #f4f1ed;
}

.artifact-frame img { border: 1px solid var(--line); }

.project-feature img {
  aspect-ratio: 1.5 / 1;
  object-fit: cover;
  object-position: top;
}

.project-feature-human img {
  aspect-ratio: 1.58 / 1;
  object-position: 50% 47%;
}

.project-feature-site img {
  aspect-ratio: 1.7 / 1;
  object-position: top;
}

.video-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #111;
}

.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.project-feature figcaption,
.media-card figcaption {
  margin-top: 11px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.project-feature figcaption { max-width: 555px; }

.media-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
  margin-top: 35px;
}

.media-card { min-width: 0; }

.media-card img {
  aspect-ratio: 1.45 / 1;
  object-fit: cover;
  object-position: top;
}

.media-pair-square .media-card img {
  aspect-ratio: 1 / 1;
  object-position: center;
}

.video-card a { position: relative; }

.video-card img { object-position: center; }

.play-mark {
  position: absolute;
  right: 14px;
  bottom: 14px;
  padding: 6px 10px 7px;
  background: rgba(255, 255, 255, .94);
  color: var(--ink);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.project-feature a:focus-visible,
.media-card a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.responsibility-note {
  margin: 45px 0;
  padding: 24px 27px 25px;
  background: #f8f6f3;
}

.responsibility-note p:last-child {
  margin-bottom: 0;
  color: #4e4a46;
  font-size: 15px;
  line-height: 1.65;
}

.evidence-group { margin-top: 52px; }

.evidence-group h3 {
  margin: 0 0 17px;
  font-size: 14px;
  font-weight: 600;
}

.evidence-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.evidence-list li { border-bottom: 1px solid var(--line); }

.evidence-list a {
  display: block;
  padding: 20px 2px 21px;
  color: inherit;
  text-decoration: none;
}

.evidence-title,
.evidence-description { display: block; }

.evidence-title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 19px;
  line-height: 1.35;
}

.evidence-description {
  margin-top: 5px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.evidence-list a:hover .evidence-title,
.evidence-list a:focus-visible .evidence-title { color: var(--accent); }

.evidence-list a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.context-note {
  margin: 31px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.context-note strong {
  color: #59544f;
  font-weight: 600;
}

.contribution-section {
  margin-top: 116px;
  padding-top: 35px;
  border-top: 1px solid var(--line);
}

.contribution-section h2 {
  margin: 0 0 20px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 32px;
  font-weight: 400;
  letter-spacing: -.016em;
  line-height: 1.2;
}

.contribution-introduction {
  max-width: 555px;
  margin-bottom: 40px;
  color: #4e4a46;
  font-size: 17px;
  line-height: 1.62;
}

.contribution-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.contribution-list > div {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 26px;
  padding: 23px 2px 24px;
  border-bottom: 1px solid var(--line);
}

.contribution-list dt {
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 18px;
  line-height: 1.4;
}

.contribution-list dd {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.62;
}

.work-close {
  margin-top: 112px;
  padding-top: 35px;
  border-top: 1px solid var(--line);
}

.work-close h2 {
  font-size: 26px;
  line-height: 1.4;
}

/* About page */

.about-page { padding-top: 108px; }

.about-introduction {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 190px;
  gap: 48px;
  align-items: start;
  margin-bottom: 112px;
}

.about-introduction h1 { margin-bottom: 28px; }

.about-introduction .lead { margin-bottom: 25px; }

.about-introduction > div > p:last-child {
  max-width: 520px;
  margin-bottom: 0;
  color: #4e4a46;
}

.about-portrait { margin: 3px 0 0; }

.about-portrait img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 51% 30%;
}

.about-section {
  margin-top: 94px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.about-section h2,
.about-close h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  letter-spacing: -.016em;
}

.about-section h2 {
  margin-bottom: 34px;
  font-size: 32px;
  line-height: 1.2;
}

.about-copy {
  max-width: 590px;
  color: #4e4a46;
}

.about-copy p { margin-bottom: 23px; }

.about-copy p:last-child { margin-bottom: 0; }

.about-figure { margin: 42px 0 0; }

.about-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 1.58 / 1;
  object-fit: cover;
}

.about-figure-personal { max-width: 590px; }

.about-figure-personal img { aspect-ratio: 4 / 3; }

.about-figure-wide img { aspect-ratio: 1.98 / 1; }

.about-figure figcaption {
  max-width: 555px;
  margin-top: 11px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}

.about-figure figcaption a { color: inherit; }

/* Article */
.essay-page {
  width: min(650px, calc(100% - 48px));
  padding-top: 104px;
}

.essay-header {
  margin-bottom: 74px;
}

.essay-kicker {
  margin-bottom: 22px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.essay-header h1 {
  max-width: 620px;
  margin-bottom: 25px;
  color: var(--ink);
  font-size: clamp(48px, 7vw, 68px);
  letter-spacing: -.047em;
  line-height: .98;
}

.essay-deck {
  max-width: 610px;
  margin-bottom: 0;
  color: #4e4a46;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 24px;
  line-height: 1.46;
}

.essay-body {
  color: #3d3935;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 20px;
  line-height: 1.72;
}

.essay-body > p {
  margin-bottom: 26px;
}

.essay-body h2 {
  margin: 74px 0 25px;
  color: var(--ink);
  font-size: 32px;
  font-weight: 400;
  letter-spacing: -.018em;
  line-height: 1.22;
}

.essay-body h3 {
  margin: 45px 0 18px;
  color: var(--ink);
  font-size: 24px;
  font-weight: 500;
  line-height: 1.3;
}

.essay-body strong {
  color: var(--ink);
  font-weight: 600;
}

.essay-body em { color: #625c56; }

.essay-body a {
  color: inherit;
  text-decoration-color: #aaa39b;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

.essay-body ul {
  margin: 4px 0 30px;
  padding-left: 25px;
}

.essay-body li { margin-bottom: 10px; }

.essay-body blockquote {
  margin: 42px 0 0;
  padding: 25px 28px 27px;
  border-left: 2px solid var(--ink);
  background: #faf8f5;
  color: #4e4a46;
  font-size: 18px;
}

.essay-visual {
  width: min(730px, calc(100vw - 48px));
  margin: 46px 0 48px 50%;
  padding: 36px 38px;
  transform: translateX(-50%);
  border: 1px solid var(--line);
  background: #faf8f5;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
}

.essay-visual figcaption {
  margin-top: 25px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: .07em;
  line-height: 1.5;
  text-align: center;
  text-transform: uppercase;
}

.lens-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 26px;
}

.lens-rays {
  display: grid;
  justify-items: end;
  gap: 7px;
}

.lens-rays span {
  display: block;
  height: 1px;
  background: #8a847e;
  transform-origin: right;
}

.lens-rays span:nth-child(1),
.lens-rays span:nth-child(5) { width: 70%; }
.lens-rays span:nth-child(2),
.lens-rays span:nth-child(4) { width: 86%; }
.lens-rays span:nth-child(3) { width: 100%; }
.lens-rays span:nth-child(1) { transform: rotate(9deg); }
.lens-rays span:nth-child(2) { transform: rotate(4deg); }
.lens-rays span:nth-child(4) { transform: rotate(-4deg); }
.lens-rays span:nth-child(5) { transform: rotate(-9deg); }

.lens-shape {
  width: 24px;
  height: 92px;
  border: 2px solid var(--accent);
  border-radius: 50%;
}

.lens-beam {
  height: 2px;
  background: var(--accent);
}

.lens-labels {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 26px;
  margin-top: 19px;
  color: var(--muted);
  font-size: 11px;
  text-align: center;
}

.essay-equation {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 17px;
  text-align: center;
}

.essay-equation strong {
  display: block;
  font-size: 15px;
  font-weight: 500;
}

.essay-equation small {
  display: block;
  margin-top: 5px;
  color: var(--muted);
  font-size: 11px;
}

.essay-equation-symbol {
  color: var(--accent);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 26px;
}

.ownership-spectrum {
  position: relative;
  padding-top: 35px;
}

.ownership-bar {
  height: 5px;
  background: linear-gradient(90deg, #cbc5be, var(--accent));
}

.ownership-marker {
  position: absolute;
  top: 19px;
  left: 70%;
  color: var(--accent);
  font-size: 11px;
  text-align: center;
  transform: translateX(-50%);
}

.ownership-marker::after {
  display: block;
  margin-top: 4px;
  content: "▼";
}

.ownership-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 12px;
  color: var(--muted);
  font-size: 11px;
}

.expert-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  text-align: left;
}

.expert-table th {
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.expert-table th,
.expert-table td {
  padding: 11px 10px;
  border-bottom: 1px solid var(--line);
}

.expert-table tr:last-child td { border-bottom: 0; }

.perspective-layers {
  display: grid;
  gap: 9px;
}

.perspective-layers > div {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  align-items: baseline;
  gap: 20px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  background: #fff;
}

.perspective-layers strong,
.perspective-components strong,
.perspective-comparison strong,
.perspective-loop strong,
.speed-ratios strong,
.speed-workflow strong,
.speed-layers strong {
  font-size: 13px;
  font-weight: 600;
}

.perspective-layers span,
.perspective-components span,
.perspective-comparison span,
.perspective-loop span,
.speed-workflow span,
.speed-layers span {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.perspective-layers .perspective-layer-emphasis {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  background: color-mix(in srgb, var(--accent) 5%, #fff);
}

.perspective-layer-emphasis strong { color: var(--accent); }

.perspective-components {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.perspective-components > div {
  min-height: 112px;
  padding: 18px;
  border: 1px solid var(--line);
  background: #fff;
}

.perspective-components strong,
.perspective-components span { display: block; }
.perspective-components span { margin-top: 7px; }

.perspective-comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 11px;
}

.perspective-comparison > div {
  padding: 20px;
  border: 1px solid var(--line);
  background: #fff;
}

.perspective-comparison strong {
  display: block;
  margin-bottom: 13px;
}

.perspective-comparison span {
  display: block;
  padding: 7px 0;
  border-bottom: 1px solid #ece8e3;
}

.perspective-comparison b {
  display: block;
  margin-top: 14px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.perspective-comparison .perspective-comparison-emphasis {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}

.perspective-comparison-emphasis strong,
.perspective-comparison-emphasis b { color: var(--accent); }

.perspective-loop {
  display: grid;
  justify-items: center;
  gap: 14px;
}

.perspective-loop > div {
  width: min(330px, 100%);
  padding: 16px 20px;
  border: 1px solid var(--line);
  background: #fff;
  text-align: center;
}

.perspective-loop strong,
.perspective-loop span { display: block; }
.perspective-loop span { margin-top: 4px; }

.perspective-loop b {
  color: var(--accent);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .02em;
}

.speed-ratios {
  display: grid;
  gap: 24px;
}

.speed-ratios > div {
  display: grid;
  gap: 9px;
}

.speed-ratio-bar {
  display: flex;
  height: 42px;
  overflow: hidden;
  background: #e7e2dc;
  font-size: 10px;
  font-style: normal;
  line-height: 42px;
  text-align: center;
}

.speed-ratio-bar i,
.speed-ratio-bar b {
  overflow: hidden;
  font-style: normal;
  font-weight: 500;
  white-space: nowrap;
}

.speed-ratio-bar i {
  background: #d8d2cb;
  color: #645e58;
}

.speed-ratio-bar b {
  background: var(--ink);
  color: #fff;
}

.speed-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  line-height: 1.45;
  text-align: left;
}

.speed-table th {
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.speed-table th,
.speed-table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.speed-table tr:last-child td { border-bottom: 0; }

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

.speed-workflow li {
  position: relative;
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: 18px;
  margin: 0;
  padding: 14px 16px 14px 45px;
  border-bottom: 1px solid var(--line);
  counter-increment: workflow;
}

.speed-workflow li::before {
  position: absolute;
  top: 14px;
  left: 10px;
  color: var(--accent);
  content: "0" counter(workflow);
  font-size: 10px;
  font-weight: 600;
}

.speed-workflow li:last-child { border-bottom: 0; }
.speed-workflow .speed-operational::before { color: var(--muted); }

.speed-layers {
  display: grid;
  justify-items: center;
  gap: 13px;
}

.speed-layers > div {
  width: 100%;
  padding: 20px;
  border: 1px solid var(--line);
  background: #fff;
}

.speed-layers strong,
.speed-layers span { display: block; }
.speed-layers span { margin-top: 7px; }

.speed-layers strong b {
  float: right;
  color: var(--muted);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.speed-layers .speed-creative {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
}

.speed-creative strong,
.speed-creative strong b { color: var(--accent); }

.speed-layers > p {
  margin: 0;
  color: var(--accent);
  font-size: 11px;
  letter-spacing: .03em;
}

.essay-endmatter {
  margin-top: 86px;
  padding-top: 35px;
  border-top: 1px solid var(--line);
}

.further-reading {
  margin-bottom: 60px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.further-reading strong {
  display: block;
  margin-bottom: 6px;
  color: var(--ink);
  font-size: 12px;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.essay-subscribe h2 {
  margin: 0 0 8px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 27px;
  font-weight: 400;
}

.essay-subscribe > p {
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 14px;
}

.subscribe-form {
  display: flex;
  gap: 9px;
}

.subscribe-form input,
.subscribe-form button {
  min-height: 46px;
  border: 1px solid #cbc5be;
  border-radius: 0;
  font: inherit;
}

.subscribe-form input {
  min-width: 0;
  flex: 1;
  padding: 9px 12px;
}

.subscribe-form input:focus {
  border-color: var(--accent);
  outline: 2px solid color-mix(in srgb, var(--accent) 24%, transparent);
  outline-offset: 1px;
}

.subscribe-form button {
  padding: 9px 17px;
  background: var(--ink);
  color: #fff;
  cursor: pointer;
}

.subscribe-form button:hover { background: var(--accent); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Writing archive */
.writing-page { padding-top: 104px; }

.writing-introduction {
  max-width: 580px;
  margin-bottom: 98px;
}

.writing-introduction h1 { margin-bottom: 29px; }

.writing-introduction .lead { max-width: 550px; }

.writing-year-heading {
  margin: 0 0 15px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.archive-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.archive-list li { border-bottom: 1px solid var(--line); }

.archive-list a {
  display: grid;
  grid-template-columns: 82px minmax(0, 1fr);
  gap: 22px;
  padding: 25px 2px 27px;
  color: inherit;
  text-decoration: none;
}

.archive-date {
  padding-top: 5px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: .04em;
  line-height: 1.4;
  text-transform: uppercase;
}

.archive-title,
.archive-description { display: block; }

.archive-title {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 23px;
  line-height: 1.3;
  transition: color 150ms ease;
}

.archive-description {
  max-width: 475px;
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.archive-list a:hover .archive-title { color: var(--accent); }

.writing-subscribe {
  margin-top: 88px;
  padding-top: 35px;
  border-top: 1px solid var(--line);
}

.writing-footnote {
  margin-top: 28px;
  color: var(--muted);
  font-size: 12px;
}

.writing-footnote a { color: inherit; }

/* Contact */
.contact-page { padding-top: 104px; }

.contact-introduction {
  max-width: 590px;
  margin-bottom: 72px;
}

.contact-introduction h1 { margin-bottom: 29px; }

.contact-introduction .lead { max-width: 570px; }

.contact-context {
  max-width: 540px;
  margin: 23px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.contact-form {
  position: relative;
  max-width: 560px;
  padding-top: 38px;
  border-top: 1px solid var(--line);
}

.contact-honeypot {
  position: absolute;
  left: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.contact-field { margin-bottom: 25px; }

.contact-field label {
  display: block;
  margin-bottom: 8px;
  color: #4e4a46;
  font-size: 13px;
  font-weight: 600;
}

.contact-optional {
  color: var(--muted);
  font-weight: 400;
}

.contact-field input,
.contact-field select,
.contact-field textarea {
  display: block;
  width: 100%;
  border: 1px solid #cbc5be;
  border-radius: 0;
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 16px;
}

.contact-field input,
.contact-field select { min-height: 49px; padding: 10px 12px; }

.contact-field textarea {
  min-height: 180px;
  padding: 12px;
  line-height: 1.55;
  resize: vertical;
}

.contact-field input::placeholder,
.contact-field textarea::placeholder { color: #9a938c; }

.contact-field input:focus,
.contact-field select:focus,
.contact-field textarea:focus {
  border-color: var(--accent);
  outline: 2px solid color-mix(in srgb, var(--accent) 24%, transparent);
  outline-offset: 1px;
}

.contact-submit {
  min-height: 49px;
  padding: 10px 20px;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: var(--ink);
  color: #fff;
  cursor: pointer;
  font: inherit;
  font-size: 15px;
}

.contact-submit:hover { background: var(--accent); border-color: var(--accent); }

.contact-submit:disabled {
  cursor: wait;
  opacity: .65;
}

.contact-form-status {
  min-height: 1.6em;
  margin: 15px 0 0;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.6;
}

.contact-form-note {
  max-width: 520px;
  margin: 9px 0 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.contact-form-note a { color: inherit; }

.about-close {
  margin-top: 104px;
  padding-top: 37px;
  border-top: 1px solid var(--line);
}

.about-close h2 {
  max-width: 650px;
  font-size: 27px;
  line-height: 1.45;
}

@media (max-width: 560px) {
  body { font-size: 17px; }
  .site-header, main, .site-footer { width: min(100% - 36px, 610px); }
  .site-header { padding-top: 28px; }
  .site-mark { width: 43px; height: 43px; }
  .site-header nav {
    gap: clamp(8px, 3.2vw, 13px);
    white-space: nowrap;
  }
  .site-header nav a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
  }
  main { padding-top: 76px; padding-bottom: 76px; }
  h1 { margin-bottom: 29px; font-size: 40px; }
  .lead { font-size: 18px; }
  .portrait { width: 78px; margin: 5px 19px 8px 0; }
  .endorsement { margin-top: 88px; }
  blockquote p { font-size: 21px; }
  .current-work { margin-top: 58px; }
  .selected-writing { margin-top: 80px; }
  .essay-list a { padding: 19px 1px 20px; }
  .work-page { padding-top: 72px; }
  .about-page { padding-top: 72px; }
  .about-introduction {
    grid-template-columns: minmax(0, 1fr) 150px;
    gap: 30px;
    margin-bottom: 90px;
  }
  .page-introduction { margin-bottom: 94px; }
  .project-story { margin-top: 92px; }
  .project-story-primary { margin-top: 0; }
  .project-heading h2 { font-size: 34px; }
  .project-premise { font-size: 21px; }
  .project-feature { margin-top: 39px; }
  .media-pair { gap: 16px; }
  .responsibility-note { margin: 37px 0; padding: 21px 22px 22px; }
  .contribution-section { margin-top: 92px; }
  .work-close { margin-top: 88px; }
  .about-section { margin-top: 78px; }
  .about-close { margin-top: 88px; }
  .essay-page {
    width: min(100% - 36px, 650px);
    padding-top: 72px;
  }
  .essay-header { margin-bottom: 60px; }
  .essay-header h1 {
    margin-bottom: 22px;
    font-size: 48px;
  }
  .essay-deck { font-size: 21px; }
  .essay-body {
    font-size: 19px;
    line-height: 1.68;
  }
  .essay-body > p { margin-bottom: 24px; }
  .essay-body h2 {
    margin-top: 62px;
    font-size: 29px;
  }
  .essay-visual {
    width: 100%;
    margin: 39px 0 41px;
    padding: 28px 24px;
    transform: none;
  }
  .lens-diagram,
  .lens-labels { gap: 15px; }
  .perspective-comparison { grid-template-columns: 1fr; }
  .speed-workflow li { grid-template-columns: 145px minmax(0, 1fr); }
  .essay-endmatter { margin-top: 72px; }
  .writing-page { padding-top: 72px; }
  .writing-introduction { margin-bottom: 78px; }
  .archive-list a {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 17px;
    padding-top: 22px;
    padding-bottom: 24px;
  }
  .archive-title { font-size: 21px; }
  .writing-subscribe { margin-top: 74px; }
  .contact-page { padding-top: 72px; }
  .contact-introduction { margin-bottom: 60px; }
}

@media (max-width: 420px) {
  .site-header {
    align-items: center;
    gap: 16px;
  }
  .site-header nav {
    display: flex;
    gap: clamp(8px, 2.8vw, 12px);
  }
  .site-footer { display: block; }
  .site-footer span { display: block; }
  .site-footer span + span { margin-top: 5px; }
  .media-pair { grid-template-columns: 1fr; gap: 31px; }
  .media-pair-square { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .media-pair-square .media-card figcaption { font-size: 11px; }
  .about-introduction {
    display: block;
    margin-bottom: 82px;
  }
  .about-portrait {
    width: 150px;
    margin-top: 34px;
  }
  .about-section {
    margin-top: 72px;
    padding-top: 29px;
  }
  .about-section h2 {
    margin-bottom: 28px;
    font-size: 29px;
  }
  .about-figure { margin-top: 34px; }
  .about-close h2 { font-size: 24px; }
  .contribution-section {
    margin-top: 78px;
    padding-top: 29px;
  }
  .contribution-section h2 { font-size: 29px; }
  .contribution-list > div {
    display: block;
    padding-top: 21px;
    padding-bottom: 22px;
  }
  .contribution-list dd { margin-top: 6px; }
  .essay-header h1 { font-size: 44px; }
  .essay-equation { gap: 7px; }
  .essay-equation strong { font-size: 12px; }
  .essay-equation small { font-size: 9px; }
  .essay-equation-symbol { font-size: 20px; }
  .perspective-layers > div { grid-template-columns: 1fr; gap: 5px; }
  .perspective-components { grid-template-columns: 1fr; }
  .perspective-components > div { min-height: 0; }
  .speed-ratio-bar { font-size: 9px; }
  .speed-table { font-size: 10px; }
  .speed-table th,
  .speed-table td { padding: 9px 6px; }
  .speed-workflow li {
    display: block;
    padding-left: 42px;
  }
  .speed-workflow span {
    display: block;
    margin-top: 4px;
  }
  .speed-layers strong b {
    display: block;
    float: none;
    margin-top: 4px;
  }
  .expert-table th:nth-child(3),
  .expert-table th:nth-child(4),
  .expert-table td:nth-child(3),
  .expert-table td:nth-child(4) { display: none; }
  .subscribe-form { display: block; }
  .subscribe-form input,
  .subscribe-form button { width: 100%; }
  .subscribe-form button { margin-top: 9px; }
  .archive-list a { display: block; }
  .archive-date {
    margin-bottom: 7px;
    padding-top: 0;
  }
  .contact-field textarea { min-height: 165px; }
  .contact-submit { width: 100%; }
}

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