:root {
  color-scheme: light;
  --ink: #07182f;
  --muted: #536274;
  --soft: #edf4fb;
  --paper: #f7f9fc;
  --panel: #ffffff;
  --line: #d9e2ec;
  --teal: #002147;
  --teal-dark: #001833;
  --gold: #a86f00;
  --blue: #003e74;
  --shadow: 0 18px 50px rgba(7, 24, 47, 0.1);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
}

a {
  color: var(--teal-dark);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  color: var(--blue);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  background: var(--ink);
  color: white;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(7, 24, 47, 0.11);
  background: rgba(247, 249, 252, 0.94);
  backdrop-filter: blur(14px);
}

.nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: grid;
  gap: 0.05rem;
  color: var(--ink);
  text-decoration: none;
}

.brand strong {
  font-size: 1rem;
  letter-spacing: 0;
}

.brand span {
  color: var(--muted);
  font-size: 0.78rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.25rem;
}

.nav-links a {
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  padding: 0.45rem 0.62rem;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  background: #e8f1fa;
  color: var(--teal-dark);
}

main {
  min-height: calc(100vh - 88px);
}

.section {
  padding: 4.25rem 1.25rem;
}

.section.alt {
  background: #edf3f1;
}

.wrap {
  max-width: 1180px;
  margin: 0 auto;
}

.narrow {
  max-width: 780px;
}

.hero {
  padding: 4.75rem 1.25rem 3.5rem;
  background:
    linear-gradient(90deg, rgba(247, 249, 252, 0.98), rgba(247, 249, 252, 0.84)),
    linear-gradient(135deg, rgba(0, 33, 71, 0.16), rgba(0, 62, 116, 0.08));
}

.hero-grid {
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) 340px;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin: 0 0 1rem;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  letter-spacing: 0;
  line-height: 1.08;
  margin: 0;
}

h1 {
  font-size: clamp(2.8rem, 5vw, 5.5rem);
  max-width: 12ch;
}

h2 {
  font-size: clamp(2rem, 3vw, 3.25rem);
}

h3 {
  font-size: 1.2rem;
}

p {
  margin: 0;
}

.lead {
  color: #28384a;
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  margin-top: 1.25rem;
  max-width: 720px;
}

.hero-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.button {
  align-items: center;
  background: var(--teal);
  border: 1px solid var(--teal);
  border-radius: 7px;
  color: white;
  display: inline-flex;
  font-weight: 800;
  min-height: 2.75rem;
  padding: 0.62rem 0.9rem;
  text-decoration: none;
}

.button:hover {
  background: var(--teal-dark);
  color: white;
}

.button.secondary {
  background: transparent;
  border-color: #b7c7d8;
  color: var(--teal-dark);
}

.button.secondary:hover {
  background: #e8f1fa;
  color: var(--teal-dark);
}

.portrait-panel {
  justify-self: end;
}

.portrait {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 0.8rem;
}

.portrait img {
  aspect-ratio: 1;
  border-radius: 6px;
  display: block;
  height: auto;
  object-fit: cover;
  width: 100%;
}

.portrait figcaption {
  color: var(--muted);
  font-size: 0.86rem;
  margin-top: 0.8rem;
}

.book-cover-card {
  background: #eef4fb;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  justify-self: start;
  max-width: 380px;
  padding: 0.8rem;
}

.book-cover-card.compact {
  margin-top: 1.3rem;
  max-width: 260px;
}

.book-cover-card img {
  border: 1px solid rgba(7, 24, 47, 0.14);
  border-radius: 4px;
  display: block;
  height: auto;
  width: 100%;
}

.book-cover-card figcaption,
.wide-photo figcaption,
.image-card figcaption {
  color: var(--muted);
  font-size: 0.86rem;
  margin-top: 0.75rem;
}

.wide-photo,
.image-card {
  margin: 0;
}

.wide-photo img,
.image-card img {
  border: 1px solid var(--line);
  border-radius: 8px;
  display: block;
  height: auto;
  object-fit: cover;
  width: 100%;
}

.wide-photo img {
  aspect-ratio: 16 / 9;
}

.image-card img {
  aspect-ratio: 4 / 5;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1.4rem;
}

.pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.83rem;
  font-weight: 750;
  padding: 0.25rem 0.6rem;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(280px, 1fr);
  gap: 3rem;
  align-items: start;
}

.kicker {
  color: var(--blue);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-head {
  display: grid;
  gap: 0.7rem;
  margin-bottom: 2rem;
}

.section-head p,
.copy p {
  color: var(--muted);
  font-size: 1.02rem;
}

.blue-heading {
  color: var(--blue);
}

.copy {
  display: grid;
  gap: 1rem;
}

.grid-3 {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 30px rgba(7, 24, 47, 0.06);
  padding: 1.15rem;
}

.card h3 {
  margin-bottom: 0.5rem;
}

.card p {
  color: var(--muted);
}

.feature-list {
  display: grid;
  gap: 0.8rem;
}

.feature {
  border-top: 1px solid var(--line);
  padding-top: 0.8rem;
}

.feature strong {
  display: block;
  margin-bottom: 0.2rem;
}

.feature span {
  color: var(--muted);
}

.book-band {
  background: var(--teal-dark);
  color: white;
}

.book-band .section-head p,
.book-band .copy p {
  color: rgba(255, 255, 255, 0.74);
}

.book-title {
  color: white;
  font-size: clamp(2.3rem, 4vw, 4.2rem);
  max-width: 820px;
}

.book-band .button.secondary {
  border-color: rgba(255, 255, 255, 0.34);
  color: white;
}

.book-band .button.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.book-mark {
  border-left: 4px solid var(--gold);
  color: rgba(255, 255, 255, 0.82);
  font-size: 1.05rem;
  margin-top: 1.5rem;
  max-width: 760px;
  padding-left: 1rem;
}

.page-hero {
  padding: 4rem 1.25rem 2.75rem;
  background: #eaf2f9;
}

.page-hero .wrap {
  display: grid;
  gap: 1rem;
}

.page-hero h1 {
  max-width: 940px;
}

.toolbar {
  align-items: end;
  display: grid;
  gap: 0.85rem;
  grid-template-columns: minmax(240px, 1fr) auto auto;
  margin-bottom: 1.2rem;
}

.field {
  display: grid;
  gap: 0.35rem;
}

.field label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

input,
select {
  background: white;
  border: 1px solid #bfcbc4;
  border-radius: 7px;
  color: var(--ink);
  font: inherit;
  min-height: 2.65rem;
  padding: 0.55rem 0.7rem;
  width: 100%;
}

input:focus,
select:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 3px rgba(0, 33, 71, 0.16);
  outline: none;
}

.count {
  color: var(--muted);
  font-size: 0.92rem;
  min-width: 8rem;
  padding: 0.55rem 0 0.35rem;
}

.paper-list {
  display: grid;
  gap: 0.85rem;
}

.selected-list,
.hbr-list {
  counter-reset: publication-item;
  display: grid;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.selected-list li,
.hbr-list li {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.95rem 1rem 0.95rem 3.2rem;
  position: relative;
}

.selected-list li::before,
.hbr-list li::before {
  color: var(--blue);
  content: counter(publication-item) ".";
  counter-increment: publication-item;
  font-weight: 850;
  left: 1rem;
  position: absolute;
  top: 0.95rem;
}

.selected-list a,
.hbr-list a {
  font-weight: 800;
}

.selected-list span,
.hbr-list span {
  color: var(--muted);
  display: block;
  font-size: 0.93rem;
  margin-top: 0.18rem;
}

.selected-list details,
.hbr-list details {
  margin-top: 0.75rem;
}

.home-summary {
  color: var(--muted);
  display: grid;
  gap: 0.55rem;
  margin-top: 1.4rem;
  max-width: 760px;
}

.profile-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1.05fr 0.95fr;
}

.profile-list {
  display: grid;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.profile-list li {
  border-top: 1px solid var(--line);
  padding-top: 0.75rem;
}

.profile-list strong {
  display: block;
}

.profile-list span {
  color: var(--muted);
}

.publication-groups {
  display: grid;
  gap: 2.2rem;
}

.publication-group {
  display: grid;
  gap: 0.9rem;
}

.publication-group-title {
  border-bottom: 2px solid var(--line);
  color: var(--teal-dark);
  font-size: 1.45rem;
  padding-bottom: 0.65rem;
}

.paper {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  gap: 0.75rem;
  padding: 1rem;
}

.paper-header {
  display: grid;
  gap: 0.35rem;
}

.paper h3 {
  font-size: 1.16rem;
  line-height: 1.25;
}

.paper-number {
  color: var(--blue);
  display: inline-block;
  font-weight: 850;
  margin-right: 0.45rem;
  min-width: 2.2rem;
}

.paper-meta {
  color: var(--muted);
  font-size: 0.94rem;
}

.tags,
.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag {
  background: #edf4fb;
  border-radius: 999px;
  color: #334963;
  font-size: 0.78rem;
  font-weight: 750;
  padding: 0.2rem 0.5rem;
}

.paper-links a {
  border: 1px solid #c4d2e1;
  border-radius: 6px;
  color: var(--teal-dark);
  font-size: 0.86rem;
  font-weight: 800;
  padding: 0.35rem 0.52rem;
  text-decoration: none;
}

.paper-links a:hover {
  background: #e8f1fa;
}

details {
  border-top: 1px solid var(--line);
  padding-top: 0.65rem;
}

summary {
  color: var(--teal-dark);
  cursor: pointer;
  font-weight: 850;
}

details p {
  color: var(--muted);
  margin-top: 0.55rem;
}

.program-figure {
  margin: 0;
}

.program-figure img {
  background: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: block;
  height: auto;
  width: 100%;
}

.program-figure figcaption {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 0.75rem;
  max-width: 920px;
}

.endorsement-list {
  display: grid;
  gap: 0.8rem;
}

.endorsement {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.95rem 1rem;
}

.endorsement summary {
  display: grid;
  gap: 0.2rem;
}

.endorsement summary span {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
}

.timeline {
  display: grid;
  gap: 0.7rem;
}

.timeline-item {
  border-left: 3px solid #b9cde2;
  padding: 0.2rem 0 0.6rem 0.9rem;
}

.timeline-item strong {
  display: block;
}

.timeline-item span {
  color: var(--muted);
}

.press-list {
  columns: 2 320px;
  column-gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.press-list li {
  break-inside: avoid;
  border-top: 1px solid var(--line);
  padding: 0.65rem 0;
}

.press-list a {
  font-weight: 700;
}

.press-title {
  color: var(--ink);
  font-weight: 700;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 2rem 1.25rem;
}

.site-footer .wrap {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  justify-content: space-between;
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .hero-grid,
  .intro-grid,
  .profile-grid,
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .portrait-panel {
    justify-self: start;
    max-width: 320px;
  }

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

@media (max-width: 520px) {
  .section,
  .hero,
  .page-hero {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  h1 {
    font-size: 2.55rem;
  }

  .nav-links a {
    padding-left: 0.42rem;
    padding-right: 0.42rem;
  }
}