:root {
  --paper: #f2efe7;
  --paper-light: #faf8f2;
  --ink: #202622;
  --muted: #66706a;
  --line: #d2d1c9;
  --accent: #94483e;
  --accent-dark: #72372f;
  --forest: #24352f;
  --white: #fffdf8;
  --page: min(1160px, calc(100% - 48px));
  --serif: "Songti SC", "STSong", "SimSun", Georgia, serif;
  --sans: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  min-width: 320px;
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: 10px 14px;
  color: var(--white);
  background: var(--accent-dark);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.page-shell,
.site-header {
  width: var(--page);
  margin-inline: auto;
}

.site-header {
  min-height: 94px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
}

.brand-mark {
  width: 44px;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 13px;
  letter-spacing: 0.08em;
}

.brand-text {
  display: grid;
  gap: 2px;
}

.brand-text strong {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.brand-text small {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.14em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3.2vw, 42px);
}

.site-nav a {
  position: relative;
  padding: 36px 0 34px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.site-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.is-current {
  color: var(--ink);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after,
.site-nav a.is-current::after {
  transform: scaleX(1);
}

.hero {
  min-height: 640px;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.45fr);
  align-items: center;
  gap: clamp(60px, 9vw, 140px);
  padding-block: 92px;
  background: linear-gradient(90deg, transparent 0 49.94%, rgba(32, 38, 34, 0.035) 49.94% 50.06%, transparent 50.06%);
}

.eyebrow,
.card-kicker,
.note-index,
.location {
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.eyebrow {
  margin: 0 0 38px;
}

h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(76px, 11vw, 148px);
  font-weight: 500;
  letter-spacing: -0.08em;
  line-height: 0.86;
}

.hero-role {
  margin: 44px 0 0;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(19px, 2vw, 25px);
  letter-spacing: 0.04em;
  line-height: 1.7;
}

.identity-note {
  padding: 32px 0;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.identity-note .note-index {
  margin: 0 0 34px;
}

.identity-note > p:not(.note-index) {
  margin: 0 0 40px;
  color: var(--muted);
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.95;
}

.location {
  color: var(--ink);
}

.about-section,
.browse-section {
  display: grid;
  grid-template-columns: minmax(220px, 0.38fr) minmax(0, 1fr);
  gap: clamp(48px, 9vw, 140px);
  padding-block: 112px;
  border-top: 1px solid var(--line);
}

.section-heading .section-number {
  margin: 0 0 38px;
  color: var(--accent);
  font-family: Georgia, serif;
  font-size: 12px;
  letter-spacing: 0.16em;
}

.section-heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(30px, 3.8vw, 46px);
  font-weight: 500;
  letter-spacing: -0.03em;
}

.section-heading > p:last-child {
  margin: 11px 0 0;
  color: var(--muted);
  font-family: Georgia, serif;
  font-size: 12px;
  font-style: italic;
  letter-spacing: 0.08em;
}

.lead {
  max-width: 700px;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(24px, 3.2vw, 38px);
  line-height: 1.65;
}

.contact-info {
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}

.contact-label {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.contact-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.contact-list a {
  color: var(--accent);
  font-family: var(--serif);
  text-decoration: none;
  font-size: 18px;
}

.contact-list a:hover,
.contact-list a:focus-visible {
  text-decoration: underline;
}

.contact-address {
  margin-top: 24px;
}

.contact-address address {
  color: var(--muted);
  font-family: var(--serif);
  font-size: 16px;
  font-style: normal;
  line-height: 1.8;
}

.profile-facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 72px;
  border-top: 1px solid var(--line);
}

.profile-facts > div {
  display: grid;
  gap: 13px;
  padding: 24px 22px 0 0;
}

.profile-facts > div + div {
  padding-left: 22px;
  border-left: 1px solid var(--line);
}

.profile-facts span {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.profile-facts strong {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
}

.research-section {
  width: 100%;
  max-width: none;
  display: grid;
  grid-template-columns: minmax(220px, 0.38fr) minmax(0, 1fr);
  gap: clamp(48px, 9vw, 140px);
  padding: 104px max(24px, calc((100vw - 1160px) / 2));
  color: var(--white);
  background: var(--forest);
}

.section-heading-light .section-number,
.section-heading-light > p:last-child {
  color: #c9aaa2;
}

.research-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, 0.28);
}

.research-list li {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 24px;
  padding: 28px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
}

.research-list span,
.research-list small {
  color: #b8c0bc;
  font-family: Georgia, serif;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.research-list strong {
  font-family: var(--serif);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 500;
}

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

.browse-card {
  min-height: 340px;
  display: flex;
  flex-direction: column;
  padding: clamp(28px, 4vw, 44px);
  border: 1px solid var(--line);
  background: rgba(250, 248, 242, 0.54);
  text-decoration: none;
  transition: border-color 180ms ease, transform 180ms ease, background 180ms ease;
}

.browse-card:hover,
.browse-card:focus-visible {
  border-color: var(--accent);
  background: var(--paper-light);
  transform: translateY(-4px);
}

.browse-card h3 {
  margin: 48px 0 16px;
  font-family: var(--serif);
  font-size: clamp(25px, 3vw, 34px);
  font-weight: 500;
}

.browse-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.card-link {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: auto;
  padding-top: 40px;
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 650;
}

.site-footer {
  min-height: 96px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.16em;
}

/* Secondary pages */
.subpage-main {
  min-height: calc(100vh - 190px);
}

.page-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: clamp(48px, 9vw, 140px);
  padding-block: 100px 84px;
  border-bottom: 1px solid var(--line);
}

.page-intro h1 {
  max-width: 7em;
  font-size: clamp(52px, 8vw, 100px);
  line-height: 1.03;
}

.page-intro-note {
  align-self: end;
  margin: 0;
  padding-top: 24px;
  border-top: 2px solid var(--ink);
  color: var(--muted);
  font-family: var(--serif);
  font-size: 15px;
  line-height: 1.8;
}

.records-section {
  padding-block: 76px 120px;
}

.records-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.record-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--ink);
}

.record-item {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr) 150px;
  gap: clamp(24px, 5vw, 70px);
  padding: 36px 0;
  border-bottom: 1px solid var(--line);
}

.record-year,
.record-status {
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.record-title {
  margin: 0;
  color: var(--ink);
  font-family: var(--serif);
  font-size: clamp(19px, 2.4vw, 25px);
  font-weight: 500;
  line-height: 1.55;
}

.record-meta {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.record-download {
  margin: 18px 0 0;
}

.record-download a {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--accent-dark);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-underline-offset: 4px;
}

.record-download a:hover,
.record-download a:focus-visible {
  color: var(--accent);
}

.record-download span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.record-status {
  justify-self: end;
  padding: 7px 10px;
  border: 1px solid var(--line);
  white-space: nowrap;
}

.placeholder-note {
  margin: 38px 0 0;
  padding: 20px 22px;
  color: var(--muted);
  border-left: 3px solid var(--accent);
  background: rgba(250, 248, 242, 0.65);
  font-size: 13px;
  line-height: 1.8;
}

@media (max-width: 820px) {
  :root {
    --page: min(100% - 32px, 1160px);
  }

  .site-header {
    min-height: 82px;
  }

  .brand-text small {
    display: none;
  }

  .site-nav {
    gap: 18px;
  }

  .site-nav a {
    padding-block: 31px 29px;
    font-size: 12px;
  }

  .hero,
  .page-intro {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 64px;
    padding-block: 76px;
  }

  .hero {
    background: var(--paper);
  }

  .about-section,
  .browse-section,
  .research-section {
    grid-template-columns: 1fr;
    gap: 56px;
    padding-block: 82px;
  }

  .research-section {
    padding-inline: 16px;
  }

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

  .browse-card {
    min-height: 290px;
  }

  .record-item {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .record-status {
    grid-column: 2;
    justify-self: start;
  }
}

@media (max-width: 540px) {
  .site-header {
    min-height: auto;
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding-top: 20px;
  }

  .site-nav {
    width: 100%;
    justify-content: space-between;
  }

  .site-nav a {
    padding-block: 16px 15px;
  }

  h1 {
    font-size: clamp(70px, 26vw, 104px);
  }

  .profile-facts {
    grid-template-columns: 1fr;
    margin-top: 50px;
  }

  .profile-facts > div,
  .profile-facts > div + div {
    padding: 18px 0;
    border-left: 0;
    border-bottom: 1px solid var(--line);
  }

  .research-list li {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 14px;
  }

  .research-list small {
    grid-column: 2;
  }

  .record-item {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .record-status {
    grid-column: 1;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}