.phd-page .site-header {
  border-bottom: 1px solid var(--ink);
  padding: 24px 0;
}
.phd-page .header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.phd-page nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 14px;
}
.phd-page .eyebrow {
  font:
    12px/1.5 "DM Sans",
    "Segoe UI",
    sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--quiet);
}
.phd-page .project-hero {
  padding: 64px 0 44px;
  border-bottom: 1px solid var(--ink);
}
.phd-page h1 {
  font-size: clamp(38px, 5vw, 70px);
  letter-spacing: -0.055em;
  line-height: 1.06;
  font-weight: 400;
  max-width: 24ch;
  margin: 24px 0;
}
.phd-page .hero-text {
  font-size: 19px;
  max-width: 64ch;
  line-height: 1.6;
  color: var(--quiet);
}
.phd-page .thesis-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 30px;
}
.phd-page .button {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid var(--ink);
}
.phd-page .button--solid {
  background: var(--ink);
  color: var(--paper);
}
.phd-page .thesis-body {
  padding: 44px 0;
}
.phd-page .thesis-body h2 {
  font-size: 32px;
  margin: 0 0 24px;
}
.phd-page .thesis-body h3 {
  font-size: 23px;
  font-weight: 400;
  letter-spacing: -0.025em;
  margin: 32px 0 16px;
}
.phd-page .thesis-body p,
.phd-page .thesis-body li {
  font-size: 17px;
  line-height: 1.7;
  max-width: 70ch;
  color: var(--quiet);
}
.phd-page .thesis-body li {
  margin-bottom: 10px;
}
.phd-page .thesis-body p {
  margin: 0 0 16px;
}
.phd-page .thesis-toc {
  border-block: 1px solid var(--rule);
  padding: 24px 0;
  margin: 30px 0;
}
.phd-page .thesis-toc h3 {
  margin-top: 0;
}
.phd-page .site-footer {
  border-top: 1px solid var(--ink);
  padding: 24px 0;
  font-size: 14px;
}
.phd-page .footer-copy {
  margin: 0;
}
.phd-page .back-link {
  font-size: 14px;
}
@media (max-width: 700px) {
  .phd-page .header-inner {
    align-items: start;
    flex-direction: column;
  }
  .phd-page .project-hero {
    padding-top: 40px;
  }
  .phd-page .hero-text {
    font-size: 17px;
  }
}