.research-site,
.research-nav {
  --bg: #f6f4ee;
  --surface: #fffdf8;
  --surface-soft: #ece8dc;
  --ink: #172126;
  --muted: #5e686d;
  --line: #d8d2c4;
  --line-strong: #aaa290;
  --accent: #174ea6;
  --accent-soft: rgba(23, 78, 166, 0.08);
  --radius: 8px;
  --max: 1180px;
  --type-home-title: clamp(2.65rem, 4vw, 3.45rem);
  --type-page-title: clamp(2rem, 2.8vw, 2.6rem);
  --type-long-title: clamp(1.72rem, 2.4vw, 2.2rem);
  --type-section-title: clamp(1.42rem, 1.8vw, 1.8rem);
  --type-subtitle: clamp(0.98rem, 1.08vw, 1.04rem);
  --type-body: 0.96rem;
  --type-meta: 0.88rem;
  --type-small: 0.82rem;
  --type-micro: 0.72rem;
  --type-button: 0.9rem;
  --type-card-title: clamp(0.98rem, 0.95vw, 1.05rem);
  --type-feature-title: clamp(1.02rem, 1.05vw, 1.12rem);
  --type-record-title: 0.98rem;
  --type-summary-number: 1.05rem;
  --leading-body: 1.58;
  --font-display: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, monospace;
}

.research-site {
  width: 100%;
  margin-left: 0;
  margin-right: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: var(--font-body);
  font-size: var(--type-body);
  line-height: var(--leading-body);
}

.research-site * {
  box-sizing: border-box;
}

.research-site a {
  color: inherit;
}

.research-site p,
.research-site li {
  font-size: var(--type-body);
  line-height: var(--leading-body);
}

.research-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  width: 100%;
  margin-left: 0;
  margin-right: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(246, 244, 238, 0.92);
  backdrop-filter: blur(16px);
  color: var(--ink);
  font-family: var(--font-body);
}

.research-nav-inner {
  width: min(var(--max), calc(100% - 32px));
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin: 0 auto;
}

.research-brand {
  display: grid;
  gap: 1px;
  text-decoration: none;
}

.research-brand strong {
  color: var(--ink);
  font-size: 0.96rem;
  line-height: 1.25;
  white-space: nowrap;
}

.research-brand span {
  color: var(--muted);
  font-size: var(--type-micro);
}

.research-nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 4px;
}

.research-nav-links a {
  min-height: 34px;
  display: inline-flex;
  align-items: center;
  padding: 0 11px;
  border-radius: 999px;
  color: var(--muted);
  font-size: var(--type-small);
  font-weight: 700;
  text-decoration: none;
}

.research-nav-links a:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.research-menu {
  display: none;
  position: relative;
}

.research-menu summary {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink);
  font-size: var(--type-small);
  font-weight: 760;
  list-style: none;
  cursor: pointer;
}

.research-menu summary::-webkit-details-marker {
  display: none;
}

.research-menu[open] summary {
  color: var(--accent);
  border-color: rgba(23, 78, 166, 0.34);
  background: var(--accent-soft);
}

.research-menu-panel {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 20;
  width: min(260px, calc(100vw - 32px));
  display: grid;
  padding: 8px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 18px 40px rgba(23, 33, 38, 0.14);
}

.research-menu-panel a {
  display: flex;
  align-items: center;
  min-height: 40px;
  padding: 0 12px;
  border-radius: calc(var(--radius) - 2px);
  color: var(--ink);
  font-size: var(--type-meta);
  font-weight: 730;
  text-decoration: none;
}

.research-menu-panel a:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.research-site img {
  display: block;
  max-width: 100%;
}

.research-shell {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.research-hero,
.research-section {
  background: var(--bg);
}

.research-hero {
  padding: clamp(38px, 4.6vw, 58px) 0 clamp(34px, 4.4vw, 52px);
  border-bottom: 1px solid var(--line);
}

.research-section {
  padding: clamp(50px, 6vw, 76px) 0;
  border-bottom: 1px solid var(--line);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.64fr);
  gap: clamp(34px, 6vw, 76px);
  align-items: start;
}

.hero-layout > *,
.section-head > *,
.paper-grid > *,
.project-grid > *,
.contact-grid > *,
.topic-page-grid > *,
.record-list,
.timeline,
.summary-board {
  min-width: 0;
}

.hero-copy {
  padding-top: clamp(4px, 1vw, 14px);
}

.research-site h1,
.research-site h2,
.research-site h3 {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-display);
  letter-spacing: 0;
  overflow-wrap: break-word;
}

.research-site h1 {
  max-width: 900px;
  font-size: var(--type-page-title);
  font-weight: 720;
  line-height: 1.06;
}

.hero-copy h1 {
  max-width: 760px;
  font-size: var(--type-home-title);
  line-height: 1.02;
}

.research-site h2 {
  max-width: none;
  font-size: var(--type-section-title);
  font-weight: 700;
  line-height: 1.12;
}

.section-head h2 {
  white-space: nowrap;
}

.research-site h3 {
  font-size: var(--type-card-title);
  font-weight: 680;
  line-height: 1.25;
}

.lede {
  max-width: min(100%, 900px);
  margin: 16px 0 0;
  color: #3d474c;
  font-size: var(--type-subtitle);
  line-height: 1.5;
  overflow-wrap: break-word;
}

.hero-focus {
  max-width: 760px;
  display: grid;
  gap: 0;
  margin-top: 30px;
  border-top: 1px solid var(--line-strong);
}

.hero-focus-item {
  display: grid;
  grid-template-columns: 42px 180px minmax(0, 1fr);
  gap: 16px;
  align-items: baseline;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.hero-focus-item span {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--type-micro);
  font-weight: 760;
}

.hero-focus-item strong {
  color: var(--ink);
  font-size: 0.96rem;
  line-height: 1.3;
}

.hero-focus-item em {
  color: var(--muted);
  font-style: normal;
  font-size: var(--type-meta);
  line-height: 1.42;
}

.hero-focus-item:hover strong,
.hero-focus-item:hover em {
  color: var(--accent);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.button,
.pill {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 760;
  text-decoration: none;
  white-space: nowrap;
}

.button {
  padding: 0 18px;
  border: 1px solid var(--ink);
  font-size: var(--type-button);
}

.button.primary {
  background: var(--ink);
  color: var(--surface);
}

.button.secondary {
  background: transparent;
  color: var(--ink);
}

.button:active,
.pill:active,
.text-link:active {
  transform: translateY(1px);
}

.text-link {
  width: fit-content;
  color: var(--accent);
  border-bottom: 1px solid rgba(23, 78, 166, 0.42);
  font-size: var(--type-meta);
  font-weight: 760;
  text-decoration: none;
}

.identity-card,
.summary-board,
.paper-card,
.project-card,
.contact-panel,
.contact-list,
.topic-card,
.topic-brief,
.record-list,
.external-panel {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
}

.identity-card {
  overflow: hidden;
  box-shadow: 0 18px 48px rgba(23, 33, 38, 0.1);
}

.identity-portrait {
  padding: 14px;
  background: var(--surface-soft);
  border-bottom: 1px solid var(--line-strong);
}

.identity-portrait img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: calc(var(--radius) - 2px);
  border: 1px solid var(--line-strong);
}

.identity-body {
  display: grid;
  gap: 18px;
  padding: 20px;
}

.identity-body strong {
  display: block;
  font-size: 1rem;
  line-height: 1.42;
}

.identity-facts,
.contact-links {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.identity-facts li,
.contact-links a {
  padding-top: 10px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--type-meta);
  line-height: 1.45;
}

.section-head {
  display: grid;
  gap: 12px;
  margin-bottom: 30px;
}

.section-head p {
  max-width: none;
  margin: 0;
  color: var(--muted);
  font-size: var(--type-body);
  line-height: 1.56;
  overflow-wrap: break-word;
}

.section-label,
.kicker {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--type-micro);
  font-weight: 760;
}

.timeline {
  border-top: 1px solid var(--line-strong);
}

.timeline-row {
  display: grid;
  grid-template-columns: 124px minmax(0, 1fr);
  gap: 28px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.timeline-row time {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--type-small);
  font-weight: 760;
}

.timeline-row p {
  margin: 0;
  color: #354044;
}

.paper-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.paper-card {
  display: grid;
  overflow: hidden;
}

.paper-card.featured {
  grid-row: auto;
}

.paper-image {
  background: var(--surface-soft);
  border-bottom: 1px solid var(--line-strong);
}

.paper-image img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.paper-body,
.project-card,
.topic-card {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 20px;
}

.paper-body h3,
.project-card h3,
.topic-card h3,
.topic-brief h3,
.contact-card h3,
.contact-panel h3 {
  font-size: var(--type-card-title);
  line-height: 1.24;
}

.paper-card.featured .paper-body h3 {
  font-size: var(--type-card-title);
}

.paper-meta,
.record-actions,
.patent-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.paper-meta,
.record-meta,
.patent-meta {
  color: var(--muted);
  font-size: var(--type-meta);
}

.paper-card p,
.project-card p,
.topic-card p,
.topic-brief p,
.external-panel p,
.contact-panel p,
.contact-card p {
  margin: 0;
  color: var(--muted);
  overflow-wrap: break-word;
}

.pill {
  min-height: 28px;
  padding: 0 10px;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--type-micro);
}

.pill.link,
.pill.digest,
.pill.topic {
  color: var(--accent);
  border-color: rgba(23, 78, 166, 0.34);
  background: var(--accent-soft);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.project-card {
  min-height: 210px;
}

.project-card span {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--type-micro);
  font-weight: 760;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(320px, 0.48fr);
  gap: 24px;
}

.contact-list {
  overflow: hidden;
}

.contact-card {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 20px;
  padding: 22px;
  border-bottom: 1px solid var(--line);
}

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

.contact-stat {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--type-meta);
  font-weight: 760;
}

.contact-panel {
  display: grid;
  align-content: space-between;
  gap: 24px;
  padding: 26px;
}

.contact-links a {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 20px;
  color: var(--ink);
  font-size: var(--type-meta);
  font-weight: 760;
  text-decoration: none;
}

.contact-links span {
  color: var(--muted);
  font-size: var(--type-small);
  font-weight: 700;
}

.summary-board {
  overflow: hidden;
}

.summary-row {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  min-height: 74px;
  border-bottom: 1px solid var(--line);
}

.summary-row:last-child {
  border-bottom: 0;
}

.summary-row strong {
  display: grid;
  place-items: center;
  border-right: 1px solid var(--line);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--type-summary-number);
}

.summary-row span {
  display: grid;
  align-content: center;
  padding: 12px 16px;
  color: var(--muted);
  font-size: var(--type-meta);
}

.topic-overview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.topic-page-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.topic-card {
  min-height: 190px;
}

.topic-brief {
  padding: 22px;
}

.record-list {
  display: grid;
  overflow: hidden;
}

.year-block,
.patent-group {
  display: grid;
  grid-template-columns: 126px minmax(0, 1fr);
  border-bottom: 1px solid var(--line-strong);
}

.year-block:last-child,
.patent-group:last-child {
  border-bottom: 0;
}

.year-label,
.group-label {
  padding: 18px 16px;
  border-right: 1px solid var(--line-strong);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--type-meta);
  font-weight: 760;
}

.record-stack {
  display: grid;
}

.record-item,
.patent-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--line);
}

.record-item:last-child,
.patent-card:last-child {
  border-bottom: 0;
}

.record-item h3,
.patent-card h3 {
  font-size: var(--type-record-title);
  line-height: 1.28;
}

.record-meta,
.patent-meta {
  margin-top: 7px;
  overflow-wrap: break-word;
}

.meta-lines {
  display: grid;
  gap: 2px;
}

.external-panel {
  margin-top: 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 18px 20px;
}

.digest-kicker {
  margin-bottom: 14px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--type-small);
  font-weight: 760;
}

.research-site.digest-page h1 {
  max-width: 960px;
  font-size: var(--type-long-title);
  line-height: 1.12;
}

.digest-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.34fr);
  gap: 24px;
  align-items: start;
}

.digest-main {
  display: grid;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.digest-block {
  padding: 24px;
  border-bottom: 1px solid var(--line);
}

.digest-block:last-child {
  border-bottom: 0;
}

.digest-block h2 {
  margin-bottom: 12px;
  font-size: clamp(1.08rem, 1.2vw, 1.22rem);
}

.digest-block p {
  max-width: min(100%, 920px);
  margin: 0;
  color: var(--muted);
  overflow-wrap: break-word;
}

.digest-record {
  display: grid;
  gap: 12px;
  margin: 0;
}

.digest-record div {
  display: grid;
  grid-template-columns: 112px minmax(0, 1fr);
  gap: 18px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.digest-record div:first-child {
  padding-top: 0;
  border-top: 0;
}

.digest-record dt {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--type-small);
  font-weight: 760;
}

.digest-record dd {
  margin: 0;
  color: var(--muted);
  overflow-wrap: break-word;
}

.digest-side {
  display: grid;
  gap: 18px;
}

.digest-side .summary-row {
  grid-template-columns: 1fr;
}

.digest-side .summary-row strong {
  place-items: start;
  padding: 13px 16px;
  border-right: 0;
  border-bottom: 1px solid var(--line);
}

@media (max-width: 980px) {
  .hero-layout,
  .paper-grid,
  .project-grid,
  .contact-grid,
  .topic-overview,
  .topic-page-grid,
  .digest-layout {
    grid-template-columns: 1fr;
  }

  .paper-card.featured {
    grid-row: auto;
  }

  .identity-card {
    max-width: 620px;
  }
}

@media (max-width: 700px) {
  .research-site,
  .research-nav {
    width: auto;
    margin-left: 0;
    margin-right: 0;
  }

  .research-nav-inner {
    min-height: 62px;
    align-items: center;
    flex-direction: row;
    padding: 10px 0;
  }

  .research-nav-links-desktop {
    display: none;
  }

  .research-menu {
    display: block;
  }

  .research-shell {
    width: min(100% - 26px, var(--max));
  }

  .research-hero {
    padding-top: 38px;
  }

  .research-site h2 {
    font-size: clamp(1.34rem, 6vw, 1.7rem);
  }

  .research-site h1,
  .hero-copy h1,
  .research-site.digest-page h1 {
    font-size: clamp(1.95rem, 8.8vw, 2.55rem);
    line-height: 1.06;
  }

  .research-site.digest-page h1 {
    font-size: clamp(1.52rem, 7vw, 2.05rem);
    line-height: 1.12;
  }

  .digest-block h2 {
    font-size: clamp(1.06rem, 5vw, 1.28rem);
  }

  .section-head h2 {
    white-space: normal;
  }

  .hero-focus-item {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px 14px;
  }

  .hero-focus-item em {
    grid-column: 2;
  }

  .timeline-row,
  .year-block,
  .patent-group,
  .record-item,
  .patent-card,
  .digest-record div,
  .summary-row,
  .contact-card,
  .external-panel {
    grid-template-columns: 1fr;
  }

  .year-label,
  .group-label,
  .summary-row strong {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    place-items: start;
  }

  .summary-row strong {
    padding: 13px 16px;
  }

  .record-actions,
  .patent-tags {
    justify-content: flex-start;
  }
}