:root {
  color-scheme: dark;
  --bg: #050607;
  --panel: rgba(10, 13, 16, 0.72);
  --panel-2: #0d1114;
  --paper: #e8e1d1;
  --paper-dim: rgba(232, 225, 209, 0.72);
  --paper-soft: rgba(232, 225, 209, 0.52);
  --line: rgba(232, 225, 209, 0.16);
  --line-strong: rgba(232, 225, 209, 0.32);
  --amber: #d7b66d;
  --teal: #62d6c4;
  --red: #df6c5f;
  --max: 1140px;
  --serif: ui-serif, Georgia, "Times New Roman", serif;
  --sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 14% 22%, rgba(98, 214, 196, 0.08), transparent 30%),
    radial-gradient(circle at 86% 12%, rgba(215, 182, 109, 0.08), transparent 30%),
    linear-gradient(rgba(232, 225, 209, 0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 225, 209, 0.024) 1px, transparent 1px),
    #050607;
  background-size: auto, auto, 64px 64px, 64px 64px, auto;
  color: var(--paper);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(circle at 18% 24%, rgba(232, 225, 209, 0.46) 0 1px, transparent 1.6px),
    radial-gradient(circle at 64% 18%, rgba(98, 214, 196, 0.38) 0 1px, transparent 1.6px),
    radial-gradient(circle at 82% 74%, rgba(215, 182, 109, 0.36) 0 1px, transparent 1.6px);
  background-size: 360px 270px, 520px 410px, 430px 330px;
  opacity: 0.32;
}

a {
  color: inherit;
}

.research-header,
.research-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1rem max(1.25rem, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(5, 6, 7, 0.84);
  backdrop-filter: blur(18px);
}

.research-header {
  position: sticky;
  top: 0;
  z-index: 20;
}

.research-brand,
.research-header nav,
.research-footer nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.research-brand {
  gap: 0.7rem;
  color: var(--paper);
  text-decoration: none;
}

.research-brand span {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--line-strong);
  color: var(--amber);
  font: 700 0.72rem/1 var(--mono);
}

.research-brand strong {
  font: 750 0.78rem/1.2 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.research-header nav,
.research-footer nav {
  justify-content: flex-end;
  gap: 0.35rem;
}

.research-header nav a,
.research-footer nav a {
  min-height: 2.1rem;
  display: inline-flex;
  align-items: center;
  border: 1px solid transparent;
  color: var(--paper-dim);
  padding: 0 0.65rem;
  text-decoration: none;
  font: 650 0.76rem/1 var(--mono);
  text-transform: uppercase;
}

.research-header nav a:hover,
.research-header nav a:focus-visible,
.research-header nav a[aria-current="page"],
.research-footer nav a:hover,
.research-footer nav a:focus-visible {
  border-color: var(--line);
  color: var(--paper);
  outline: none;
}

.research-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.research-hero__grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(232, 225, 209, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 225, 209, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg, black, transparent 72%);
}

.research-hero__inner,
.research-wrap {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
}

.research-hero__inner {
  position: relative;
  z-index: 1;
  min-height: 680px;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 0.62fr);
  gap: 44px;
  align-items: center;
  padding: 5rem 0;
}

.eyebrow,
.latest-record__label {
  margin: 0 0 1rem;
  color: var(--amber);
  font: 800 0.76rem/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1,
h2,
h3,
h4 {
  font-family: var(--serif);
  font-weight: 520;
}

.research-hero h1 {
  max-width: 11ch;
  margin: 0;
  color: #fffaf0;
  font-size: clamp(3.4rem, 6vw, 6rem);
  line-height: 0.92;
}

.research-hero__copy p:not(.eyebrow) {
  max-width: 68ch;
  margin: 1.5rem 0 0;
  color: var(--paper-dim);
  font-size: 1.05rem;
}

.latest-record {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(98, 214, 196, 0.08), transparent 34%),
    rgba(9, 12, 15, 0.78);
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.45);
  padding: 1.5rem;
}

.latest-record h2 {
  margin: 0;
  color: #fffaf0;
  font-size: 2rem;
  line-height: 1.05;
}

.latest-record p:not(.latest-record__label) {
  margin: 1rem 0 0;
  color: var(--paper-dim);
}

.latest-record dl {
  display: grid;
  grid-template-columns: 4rem 1fr;
  column-gap: 0.8rem;
  row-gap: 0.75rem;
  margin: 1.4rem 0;
}

.latest-record dt,
.latest-record dd {
  border-top: 1px solid rgba(232, 225, 209, 0.12);
  padding-top: 0.75rem;
}

.latest-record dt {
  color: var(--teal);
  font: 800 0.7rem/1 var(--mono);
  text-transform: uppercase;
}

.latest-record dd {
  margin: 0;
  color: var(--paper);
  font: 650 0.86rem/1.2 var(--mono);
}

.research-btn,
.research-tags a {
  min-height: 2.2rem;
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(232, 225, 209, 0.18);
  background: rgba(232, 225, 209, 0.035);
  color: var(--paper);
  padding: 0 0.75rem;
  text-decoration: none;
  font: 750 0.74rem/1 var(--mono);
  text-transform: uppercase;
}

.research-btn--primary {
  border-color: rgba(215, 182, 109, 0.48);
  background: rgba(215, 182, 109, 0.11);
  color: var(--amber);
}

.research-btn:hover,
.research-btn:focus-visible,
.research-tags a:hover,
.research-tags a:focus-visible,
.research-tags a.is-active {
  border-color: var(--teal);
  color: var(--teal);
  outline: none;
}

.research-section {
  border-bottom: 1px solid rgba(232, 225, 209, 0.12);
  padding: 4.8rem 0;
}

.research-split,
.research-section__head,
.tag-console {
  display: grid;
  grid-template-columns: minmax(280px, 0.65fr) minmax(0, 1fr);
  gap: 44px;
  align-items: end;
}

.research-section h2 {
  max-width: 13ch;
  margin: 0;
  color: #fffaf0;
  font-size: clamp(2.1rem, 4.5vw, 4rem);
  line-height: 0.98;
}

.research-split > p,
.research-section__head > p {
  max-width: 70ch;
  margin: 0;
  color: var(--paper-dim);
}

.research-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.publication-groups {
  display: grid;
  gap: 1.1rem;
  margin-top: 2rem;
}

.publication-group {
  border: 1px solid var(--line);
  background: rgba(8, 10, 12, 0.52);
}

.publication-group h3 {
  margin: 0;
  border-bottom: 1px solid rgba(232, 225, 209, 0.12);
  color: var(--amber);
  padding: 1rem 1.1rem;
  font: 800 0.76rem/1 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.paper-card {
  position: relative;
  display: grid;
  grid-template-columns: 124px minmax(0, 1fr) minmax(220px, 0.38fr);
  gap: 1.2rem;
  align-items: center;
  border-bottom: 1px solid rgba(232, 225, 209, 0.1);
  padding: 1.1rem;
}

.paper-card::before {
  content: "";
  width: 92px;
  height: 76px;
  border: 1px solid rgba(232, 225, 209, 0.16);
  background:
    linear-gradient(rgba(232, 225, 209, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 225, 209, 0.045) 1px, transparent 1px),
    rgba(5, 6, 7, 0.72);
  background-size: 16px 16px, 16px 16px, auto;
  box-shadow: inset 0 0 28px rgba(0, 0, 0, 0.4), 0 16px 36px rgba(0, 0, 0, 0.22);
}

.paper-card[data-tags~="RH"]::before {
  background:
    radial-gradient(circle at 28% 34%, rgba(215, 182, 109, 0.86) 0 2px, transparent 3px),
    radial-gradient(circle at 62% 58%, rgba(98, 214, 196, 0.76) 0 2px, transparent 3px),
    radial-gradient(circle at 72% 28%, rgba(232, 225, 209, 0.62) 0 1px, transparent 2px),
    linear-gradient(135deg, transparent 0 46%, rgba(215, 182, 109, 0.32) 47% 50%, transparent 51%),
    linear-gradient(rgba(232, 225, 209, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 225, 209, 0.035) 1px, transparent 1px),
    rgba(5, 6, 7, 0.82);
  background-size: auto, auto, auto, auto, 14px 14px, 14px 14px, auto;
}

.paper-card[data-tags~="Navier-Stokes"]::before {
  background:
    radial-gradient(ellipse at 52% 50%, transparent 0 15%, rgba(98, 214, 196, 0.28) 16% 18%, transparent 19% 27%, rgba(98, 214, 196, 0.2) 28% 30%, transparent 31%),
    radial-gradient(ellipse at 36% 42%, rgba(215, 182, 109, 0.28), transparent 34%),
    repeating-linear-gradient(155deg, rgba(232, 225, 209, 0.08) 0 1px, transparent 1px 12px),
    rgba(5, 6, 7, 0.82);
}

.paper-card[data-tags~="AGI"]::before {
  background:
    linear-gradient(90deg, transparent 0 34%, rgba(223, 108, 95, 0.42) 35% 37%, transparent 38% 63%, rgba(98, 214, 196, 0.46) 64% 66%, transparent 67%),
    linear-gradient(0deg, transparent 0 42%, rgba(215, 182, 109, 0.42) 43% 45%, transparent 46%),
    radial-gradient(circle at 50% 50%, rgba(232, 225, 209, 0.62) 0 2px, transparent 3px),
    linear-gradient(rgba(232, 225, 209, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 225, 209, 0.03) 1px, transparent 1px),
    rgba(5, 6, 7, 0.82);
  background-size: auto, auto, auto, 18px 18px, 18px 18px, auto;
}

.paper-card[data-tags~="Cognitive"]::before {
  background:
    radial-gradient(circle at 26% 30%, rgba(98, 214, 196, 0.84) 0 3px, transparent 4px),
    radial-gradient(circle at 70% 28%, rgba(215, 182, 109, 0.78) 0 3px, transparent 4px),
    radial-gradient(circle at 48% 68%, rgba(232, 225, 209, 0.72) 0 3px, transparent 4px),
    linear-gradient(28deg, transparent 0 47%, rgba(98, 214, 196, 0.34) 48% 50%, transparent 51%),
    linear-gradient(150deg, transparent 0 48%, rgba(215, 182, 109, 0.28) 49% 51%, transparent 52%),
    rgba(5, 6, 7, 0.82);
}

.paper-card[data-tags~="GUH"]:not([data-tags~="RH"])::before {
  background:
    radial-gradient(circle at 50% 50%, rgba(5, 6, 7, 0.9) 0 13%, rgba(215, 182, 109, 0.48) 14% 15%, transparent 16% 23%, rgba(98, 214, 196, 0.2) 24% 25%, transparent 26%),
    radial-gradient(circle at 50% 50%, rgba(232, 225, 209, 0.12), transparent 45%),
    radial-gradient(circle at 22% 28%, rgba(232, 225, 209, 0.76) 0 1px, transparent 2px),
    radial-gradient(circle at 76% 64%, rgba(98, 214, 196, 0.58) 0 1px, transparent 2px),
    rgba(5, 6, 7, 0.86);
}

.paper-card:hover::before,
.paper-card:focus-within::before {
  border-color: rgba(98, 214, 196, 0.42);
  box-shadow: inset 0 0 28px rgba(0, 0, 0, 0.36), 0 0 28px rgba(98, 214, 196, 0.12);
}

.paper-card:last-child {
  border-bottom: 0;
}

.paper-card p {
  margin-bottom: 0.45rem;
  color: var(--paper-soft);
  font: 650 0.72rem/1 var(--mono);
  text-transform: uppercase;
}

.paper-card h4 {
  margin: 0;
  color: var(--paper);
  font-size: 1.28rem;
  line-height: 1.15;
}

.paper-card span {
  display: block;
  margin-top: 0.55rem;
  color: var(--teal);
  font: 650 0.76rem/1.25 var(--mono);
}

.paper-card__companion {
  display: block;
  margin-top: 0.75rem;
  color: rgba(235, 229, 214, 0.66);
  font: 700 0.68rem/1.45 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.paper-card__companion a {
  color: var(--teal);
  text-decoration: none;
}

.paper-card__companion span {
  display: inline;
  margin: 0 0.25rem;
  color: rgba(215, 190, 126, 0.58);
  font: inherit;
}

.paper-card__companion a:hover,
.paper-card__companion a:focus-visible {
  color: var(--amber);
  outline: none;
}

.paper-card > a {
  justify-self: end;
  color: var(--amber);
  font: 750 0.82rem/1.2 var(--mono);
  text-decoration: none;
}

.paper-card > a:hover,
.paper-card > a:focus-visible {
  color: var(--teal);
  outline: none;
}

.paper-card[hidden],
.publication-group[hidden] {
  display: none;
}

.citation-map {
  position: relative;
  margin: 2rem 0 0;
  border: 1px solid var(--line);
  background: rgba(9, 12, 15, 0.7);
  padding: 1rem;
}

.citation-map figcaption {
  position: absolute;
  left: 1rem;
  top: 1rem;
  color: var(--paper-soft);
  font: 750 0.68rem/1 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.citation-map svg {
  display: block;
  width: 100%;
}

.map-frame {
  fill: rgba(5, 6, 7, 0.32);
  stroke: rgba(232, 225, 209, 0.18);
}

.map-grid {
  fill: none;
  stroke: rgba(232, 225, 209, 0.06);
}

.map-node rect {
  fill: rgba(11, 14, 17, 0.9);
  stroke: rgba(98, 214, 196, 0.42);
}

.map-node--primary rect {
  stroke: rgba(215, 182, 109, 0.62);
}

.map-node text,
.map-caption {
  fill: rgba(232, 225, 209, 0.76);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  text-anchor: middle;
}

.map-node text + text {
  fill: var(--paper-soft);
  font-size: 11px;
}

.map-link {
  fill: none;
  stroke: url(#mapLine);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-dasharray: 8 10;
  animation: mapFlow 7s linear infinite;
}

.map-caption {
  fill: var(--paper-soft);
  text-anchor: start;
}

.research-next {
  border-bottom: 0;
}

.narrative-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 2rem;
  border: 1px solid var(--line);
  background: var(--line);
}

.narrative-grid a {
  min-height: 210px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #080a0c;
  padding: 1.2rem;
  text-decoration: none;
}

.narrative-grid span {
  color: var(--teal);
  font: 800 0.72rem/1 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.narrative-grid strong {
  color: var(--paper);
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 520;
  line-height: 1.12;
}

.narrative-grid a:hover strong,
.narrative-grid a:focus-visible strong {
  color: var(--amber);
}

.research-footer {
  align-items: flex-start;
  border-top: 1px solid var(--line);
  border-bottom: 0;
  color: var(--paper-soft);
  font-size: 0.84rem;
}

.research-footer p {
  margin: 0;
}

@keyframes mapFlow {
  to {
    stroke-dashoffset: -36;
  }
}

/* === Paper-card thumbnails (added 2026-05-11, squared 1:1 2026-05-11) === */
.paper-card > img {
  width: 120px;
  height: 120px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid rgba(232, 225, 209, 0.16);
  border-radius: 4px;
  background: rgba(5, 6, 7, 0.72);
  box-shadow: inset 0 0 28px rgba(0, 0, 0, 0.4), 0 16px 36px rgba(0, 0, 0, 0.22);
  opacity: 0.88;
  transition: opacity 180ms ease, border-color 180ms ease;
}

.paper-card:hover > img,
.paper-card:focus-within > img {
  opacity: 1;
  border-color: rgba(98, 214, 196, 0.42);
}

/* Hide procedural ::before placeholder when paper-card has a real thumbnail image */
.paper-card:has(> img)::before {
  display: none;
}

.latest-record img {
  display: block;
  width: 100%;
  max-height: 180px;
  object-fit: cover;
  border: 1px solid rgba(232, 225, 209, 0.16);
  border-radius: 4px;
  opacity: 0.92;
  background: rgba(5, 6, 7, 0.72);
  transition: opacity 180ms ease, border-color 180ms ease;
}

.latest-record__media {
  display: block;
  margin-bottom: 1.2rem;
  text-decoration: none;
}

.latest-record__media:hover img,
.latest-record__media:focus-visible img {
  opacity: 1;
  border-color: rgba(98, 214, 196, 0.42);
}

.latest-record h2 a {
  color: inherit;
  text-decoration: none;
  transition: color 180ms ease;
}

.latest-record h2 a:hover,
.latest-record h2 a:focus-visible {
  color: rgba(98, 214, 196, 0.92);
  outline: none;
}

@media (max-width: 900px) {
  .paper-card > img {
    width: 100px;
    height: 100px;
  }
}

@media (max-width: 640px) {
  .paper-card > img {
    width: 90px;
    height: 90px;
  }
  .latest-record > img {
    max-height: 160px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 900px) {
  .research-header,
  .research-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .research-hero__inner,
  .research-split,
  .research-section__head,
  .tag-console,
  .narrative-grid {
    grid-template-columns: 1fr;
  }

  .research-hero__inner {
    min-height: 0;
  }

  .paper-card {
    grid-template-columns: 1fr;
  }

  .paper-card::before {
    width: min(180px, 100%);
    height: 86px;
  }

  .paper-card > a {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .research-hero__inner,
  .research-wrap {
    width: min(100% - 32px, var(--max));
  }

  .research-hero h1 {
    font-size: 3.1rem;
  }

  .research-section {
    padding: 3.4rem 0;
  }

  .latest-record,
  .citation-map,
  .paper-card,
  .narrative-grid a {
    padding: 1rem;
  }
}