:root {
  --paper: #f4f1e8;
  --paper-2: #ece7dc;
  --ink: #151515;
  --muted: #625e56;
  --rule: rgba(21, 21, 21, 0.18);
  --accent: #8b2f2f;
  --max: 1180px;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: Arial, Helvetica, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }
a:focus-visible,
button:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: white;
  padding: .7rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

.wrap {
  width: min(calc(100% - 48px), var(--max));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  border-bottom: 1px solid var(--rule);
  backdrop-filter: blur(12px);
}

.nav-wrap {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.wordmark {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid var(--ink);
  text-decoration: none;
  font-size: .76rem;
  letter-spacing: .08em;
  font-weight: 700;
}

nav { display: flex; gap: 1.45rem; flex-wrap: wrap; }
nav a {
  text-decoration: none;
  font-size: .82rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}
nav a:hover { text-decoration: underline; text-underline-offset: 5px; }
nav a[aria-current="page"] { text-decoration: underline; text-underline-offset: 5px; }

.hero { padding: 6rem 0 5rem; border-bottom: 1px solid var(--rule); }
.network-hero h1 {
  font-family: var(--serif);
  font-size: clamp(4rem, 9vw, 8rem);
  font-weight: 400;
  line-height: .92;
  letter-spacing: -.055em;
  margin-bottom: 1.5rem;
}
.network-hero .lede { max-width: 760px; }
.network-empty {
  max-width: 760px;
  padding: 3rem 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.network-empty h2 {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 4.7vw, 4.5rem);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -.035em;
  margin-bottom: 1.2rem;
}
.network-empty p:not(.eyebrow):not(.fineprint) { font-family: var(--serif); font-size: 1.25rem; }
.network-empty .fineprint { color: var(--muted); font-size: .92rem; }
.network-empty code { background: var(--paper-2); padding: .12em .3em; }
.network-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.network-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-top: 1px solid var(--ink);
  background: var(--paper-2);
}
.network-photo {
  position: relative;
  isolation: isolate;
  width: 60%;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  margin: 0 auto;
  background: #d7d2c8;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 48%, rgba(0, 0, 0, .9) 67%, transparent 100%);
  mask-image: radial-gradient(ellipse at center, #000 48%, rgba(0, 0, 0, .9) 67%, transparent 100%);
}
.network-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: radial-gradient(ellipse at center, transparent 40%, rgba(0, 0, 0, .08) 61%, rgba(0, 0, 0, .64) 100%);
  mix-blend-mode: multiply;
}
.network-photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 28%;
  filter: grayscale(1) contrast(1.08);
}
.network-card-body { padding: 1.25rem 1.25rem 1.5rem; }
.network-card-body h2 {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.3vw, 2rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -.025em;
  margin-bottom: .5rem;
}
.network-affiliation {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: .82rem;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.network-card-body > p:not(.network-affiliation) { margin: 0 0 1.2rem; }
.network-links { display: flex; flex-wrap: wrap; gap: 1rem; }
.network-links a { font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; text-underline-offset: 4px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.08fr .92fr;
  gap: clamp(3rem, 7vw, 7rem);
  align-items: center;
}


.hero-grid { position: relative; }
.hero-copy,
.hero-figure {
  position: relative;
  z-index: 2;
}
.hero-sketch {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: min(54.6vw, 728px);
  aspect-ratio: 4 / 3;
  background-image: url('assets/phil-sketch-homepage.webp');
  background-size: cover;
  background-position: center;
  opacity: .18;
  filter: grayscale(1) contrast(1.05);
  mix-blend-mode: multiply;
  pointer-events: none;
  z-index: 1;
  border-radius: 999px;
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 48%, rgba(0,0,0,.88) 58%, rgba(0,0,0,.36) 72%, transparent 84%);
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,1) 48%, rgba(0,0,0,.88) 58%, rgba(0,0,0,.36) 72%, transparent 84%);
}

.eyebrow {
  margin: 0 0 1rem;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
}

h1, h2, h3 { margin-top: 0; }
h1 {
  font-family: var(--serif);
  font-size: clamp(3.7rem, 8vw, 7.6rem);
  font-weight: 400;
  line-height: .92;
  letter-spacing: -.055em;
  margin-bottom: 2rem;
}

.lede {
  max-width: 720px;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.6vw, 2.08rem);
  line-height: 1.35;
  letter-spacing: -.015em;
  margin-bottom: 2rem;
}

.hero-links { display: flex; gap: 1.15rem; align-items: center; flex-wrap: wrap; }
.button {
  display: inline-block;
  background: var(--ink);
  color: var(--paper);
  padding: .78rem 1rem;
  text-decoration: none;
  font-size: .82rem;
  letter-spacing: .04em;
}
.button:hover { background: var(--accent); }
.text-link {
  font-size: .85rem;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
}

.hero-figure {
  border-left: 1px solid var(--rule);
  padding-left: clamp(1.5rem, 4vw, 3rem);
}
.hero-figure svg { width: 100%; height: auto; display: block; }
.hero-figure text { font: 600 16px var(--sans); fill: var(--ink); letter-spacing: .01em; }
.hero-figure .small { font-size: 13px; font-weight: 400; fill: var(--muted); }
.hero-figure path,
.hero-figure line,
.hero-figure circle {
  fill: none;
  stroke: var(--ink);
  stroke-width: 2;
  vector-effect: non-scaling-stroke;
}
.hero-figure circle { fill: var(--paper); }
.hero-figure .dash { stroke-dasharray: 5 6; stroke-width: 1.4; }
.hero-figure .gridlines line { stroke: var(--rule); stroke-width: 1; }

.section { padding: 6rem 0; border-bottom: 1px solid var(--rule); }
.section-heading { margin-bottom: 3.2rem; max-width: 900px; }
.section-heading h2,
.principle-grid h2,
.about-grid h2,
.contact-grid h2 {
  font-family: var(--serif);
  font-size: clamp(2.2rem, 4.7vw, 4.5rem);
  font-weight: 400;
  line-height: 1.02;
  letter-spacing: -.035em;
  margin-bottom: 0;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.research-card {
  min-height: 430px;
  padding: 1.7rem 1.7rem 2rem;
  border-right: 1px solid var(--rule);
  display: flex;
  flex-direction: column;
}
.research-card:last-child { border-right: 0; }
.research-card h3 {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -.025em;
  margin: 1.6rem 0 1.25rem;
}
.card-index { font-size: .75rem; color: var(--muted); letter-spacing: .12em; }
.card-note { margin-top: auto; color: var(--muted); font-size: .92rem; }
.research-card.featured { background: var(--paper-2); }

.principle-section { background: var(--ink); color: var(--paper); }
.principle-section .eyebrow { color: #d99090; }
.principle-grid {
  display: grid;
  grid-template-columns: .82fr 1.18fr;
  gap: 5rem;
  align-items: start;
}
blockquote {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.7rem, 3.5vw, 3.3rem);
  line-height: 1.18;
  font-weight: 400;
}

.split-heading {
  max-width: none;
  display: flex;
  justify-content: space-between;
  gap: 3rem;
  align-items: end;
}
.heading-note { color: var(--muted); max-width: 320px; margin: 0; }

.pub-list { border-top: 1px solid var(--ink); }
.pub-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 2rem;
  padding: 2rem 0 2.2rem;
  border-bottom: 1px solid var(--rule);
}
.pub-year { font-size: .82rem; letter-spacing: .08em; color: var(--muted); }
.pub-item h3 {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.2vw, 2rem);
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: .7rem;
}
.pub-item p { margin: 0 0 .8rem; max-width: 850px; }
.pub-item a { font-size: .82rem; text-transform: uppercase; letter-spacing: .08em; text-underline-offset: 4px; }
.inline-links { display: flex; gap: 1rem; }

.about-grid,
.contact-grid {
  display: grid;
  grid-template-columns: .78fr 1.22fr;
  gap: 5rem;
  align-items: start;
}
.about-copy { font-family: var(--serif); font-size: 1.25rem; }
.about-copy p:first-child { margin-top: 0; }
.affiliations {
  margin: 2.5rem 0 0;
  padding-top: 1.6rem;
  border-top: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: .95rem;
}
.affiliations div { margin-bottom: 1rem; }
.affiliations dt { font-weight: 700; }
.affiliations dd { margin: .15rem 0 0; color: var(--muted); }

.contact-section { background: var(--paper-2); }
.contact-links {
  display: grid;
  gap: .85rem;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 3vw, 2.2rem);
}
.contact-links a { width: fit-content; text-decoration-thickness: 1px; text-underline-offset: 6px; }

.site-footer { padding: 2rem 0 2.5rem; }
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1rem;
  font-size: .75rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
}
.footer-grid p { margin: 0; }
.footer-meta { text-align: right; }



.feature-section {
  background: linear-gradient(to bottom, color-mix(in srgb, var(--paper-2) 58%, var(--paper) 42%), var(--paper));
}
.feature-grid {
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: center;
}
.feature-copy h2 {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 5.5vw, 5.2rem);
  font-weight: 400;
  line-height: .98;
  letter-spacing: -.04em;
  margin-bottom: 1.3rem;
}
.feature-lede {
  font-family: var(--serif);
  font-size: clamp(1.18rem, 2.1vw, 1.7rem);
  line-height: 1.42;
  margin-bottom: 1.2rem;
}
.feature-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin: 1.8rem 0 1.4rem;
}
.feature-points {
  margin: 1.2rem 0 0;
  padding-left: 1.2rem;
}
.feature-points li { margin-bottom: .8rem; }
.feature-figure-stack {
  display: grid;
  gap: 1.1rem;
  align-content: start;
  width: min(100%, 610px);
  justify-self: center;
}
.feature-sketch-card {
  margin: 0;
  padding: .7rem .85rem .75rem;
  border: 1px solid var(--rule);
  background: color-mix(in srgb, var(--paper) 78%, white 22%);
}
.feature-sketch-card img {
  display: block;
  width: 88%;
  margin: 0 auto;
  height: auto;
}
.feature-sketch-card figcaption {
  margin-top: .8rem;
  font-size: .92rem;
  color: var(--muted);
}

@media (max-width: 920px) {
  .feature-grid { grid-template-columns: 1fr; }
  .feature-figure-stack { width: 100%; }
  .feature-sketch-card img { width: 94%; }
}

@media (max-width: 920px) {
  .hero-sketch {
    width: min(82vw, 520px);
    right: -4rem;
    top: 38%;
    opacity: .12;
  }
}

@media (max-width: 920px) {
  .hero-grid,
  .principle-grid,
  .about-grid,
  .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .hero-figure { border-left: 0; border-top: 1px solid var(--rule); padding: 2rem 0 0; }
  .research-grid { grid-template-columns: 1fr; }
  .network-grid { grid-template-columns: repeat(2, 1fr); }
  .research-card { min-height: auto; border-right: 0; border-bottom: 1px solid var(--rule); }
  .research-card:last-child { border-bottom: 0; }
  .split-heading { display: block; }
  .heading-note { margin-top: 1rem; }
}

@media (max-width: 640px) {
  .hero { overflow: hidden; }
  .hero-sketch {
    display: block;
    width: min(48vw, 190px);
    right: .9rem;
    top: 5.35rem;
    transform: translateY(-50%);
    opacity: .34;
    background-position: 72% 34%;
  }
  .wrap { width: min(calc(100% - 30px), var(--max)); }
  .site-header { position: static; }
  .nav-wrap { align-items: flex-start; padding: 1rem 0; }
  nav { justify-content: flex-end; gap: .65rem 1rem; }
  nav a { font-size: .68rem; }
  .hero { padding: 4rem 0 3.5rem; }
  .section { padding: 4rem 0; }
  .pub-item { grid-template-columns: 1fr; gap: .7rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-meta { text-align: left; }
  .network-grid { grid-template-columns: 1fr; }
}

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