:root {
  --paper: #f7f5ef;
  --paper-deep: #efede6;
  --ink: #202720;
  --muted: #6f786f;
  --forest: #245443;
  --forest-soft: #e5ece7;
  --warm: #f2ead8;
  --line: #d6d4cc;
  --serif: "Noto Serif SC", "Songti SC", STSong, SimSun, serif;
  --body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Consolas, monospace;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button, input { font: inherit; }
button { color: inherit; }

.site-head {
  padding: 34px max(4vw, 24px) 0;
  border-top: 4px solid var(--forest);
  background: rgba(255, 255, 255, .22);
}
.brand-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  max-width: 1440px;
  margin: 0 auto 34px;
}
.brand {
  margin: 0;
  font: 500 clamp(34px, 4.2vw, 58px)/1.08 var(--serif);
  letter-spacing: -.035em;
}
.brand em {
  padding-right: .08em;
  color: var(--forest);
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
}
.site-note {
  max-width: 36ch;
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
  text-align: right;
}
.section-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 1440px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section-nav > a {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 16px;
  min-height: 62px;
  padding: 20px 18px;
  border-right: 1px solid var(--line);
  color: inherit;
  text-decoration: none;
  transition: background-color .18s ease, color .18s ease;
}
.section-nav > a:last-child { border-right: 0; }
.section-nav > a:hover { background: rgba(29, 77, 63, .045); color: var(--forest); }
.section-nav > a:focus-visible { outline: 2px solid var(--forest); outline-offset: -2px; }
.section-nav > a.active::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: var(--forest);
  content: "";
}
.section-nav b { color: var(--forest); font: 600 11px/1 var(--mono); }
.section-nav i { font-size: 16px; font-style: normal; font-weight: 650; }

.page-shell {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 64px 0 100px;
}
.site-footer {
  padding: 28px 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--forest);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
}

.article-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 32px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}
.dossier-head {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, .75fr);
  align-items: stretch;
  gap: clamp(48px, 6vw, 86px);
  padding: 30px 0 52px;
  border-bottom: 2px solid var(--ink);
}
.dossier-copy {
  display: grid;
  align-content: start;
  gap: 24px;
  min-width: 0;
}
.dossier-index {
  display: flex;
  align-items: baseline;
  gap: 18px;
}
.dossier-number {
  color: var(--forest);
  font: 500 31px/1 Georgia, "Times New Roman", serif;
  letter-spacing: -.025em;
}
.dossier-index span {
  color: var(--muted);
  font: 600 10px/1 var(--mono);
  letter-spacing: .1em;
}
.dossier-details {
  display: grid;
  gap: 16px;
}
.dossier-details .meta-line,
.dossier-details .article-source { margin-top: 0; }
.dossier-details .article-source { justify-self: start; }
.article-title {
  max-width: min(100%, 18ch);
  margin: 0;
  font: 500 clamp(42px, 5.6vw, 72px)/1.12 var(--serif);
  letter-spacing: -.035em;
  text-wrap: balance;
}
.meta-line {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 22px;
  color: var(--muted);
  font-size: 12px;
}
.dossier-abstract {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.95;
}
.dossier-abstract-panel {
  display: grid;
  align-content: end;
  gap: 18px;
  padding: 0 0 4px clamp(30px, 3.2vw, 48px);
  border-left: 1px solid var(--line);
}
.dossier-abstract-label {
  margin: 0;
  color: var(--forest);
  font: 650 11px/1 var(--mono);
  letter-spacing: .08em;
}
.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 34px 0 68px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.metric {
  display: grid;
  gap: 7px;
  padding: 20px 18px 22px;
  border-right: 1px solid var(--line);
}
.metric:last-child { border-right: 0; }
.metric small { color: var(--muted); font-size: 11px; }
.metric strong { font: 600 19px/1.25 var(--serif); }
.metric em { color: var(--muted); font-size: 11px; font-style: normal; }
.dossier-body {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  align-items: start;
  gap: 70px;
}
.record-panel {
  position: sticky;
  top: 26px;
  padding-top: 4px;
}
.record-panel dl { margin: 0; }
.record-panel dl div {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 10px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.record-panel dt { color: var(--muted); font-size: 11px; }
.record-panel dd { margin: 0; font-size: 12px; line-height: 1.7; overflow-wrap: anywhere; }
.article-copy {
  width: 100%;
  min-width: 0;
  max-width: none;
}
.article-copy p {
  margin: 0 0 1.35em;
  font-family: var(--serif);
  font-size: 17px;
  line-height: 2;
  text-align: justify;
  text-justify: inter-ideograph;
}
.article-copy .lead { font-size: 18px; line-height: 2; }
.article-copy a { color: var(--forest); text-underline-offset: 3px; }

.home-shell { width: min(1440px, calc(100% - 64px)); padding-top: 54px; }
.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, .9fr);
  gap: 68px;
  padding-bottom: 48px;
  border-bottom: 1px solid var(--line);
}
.home-kicker { margin: 0 0 14px; color: var(--forest); font: 600 12px/1 var(--mono); letter-spacing: .1em; }
.home-hero h2 {
  max-width: 7ch;
  margin: 0;
  font: 500 clamp(58px, 8vw, 104px)/.98 var(--serif);
  letter-spacing: -.045em;
}
.home-intro { max-width: 52ch; margin: 26px 0 0; color: var(--muted); font-size: 15px; line-height: 1.95; }
.home-summary { display: grid; align-content: end; gap: 20px; }
.home-summary dl { display: grid; grid-template-columns: repeat(3, 1fr); margin: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.home-summary dl div { padding: 18px 16px; border-right: 1px solid var(--line); }
.home-summary dl div:last-child { border-right: 0; }
.home-summary dt { color: var(--muted); font-size: 11px; }
.home-summary dd { margin: 7px 0 0; font: 600 24px/1 var(--serif); }
.home-summary p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.8; }

.theme-matrix { padding: 54px 0 62px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 24px; }
.section-heading h3 { margin: 0; font: 500 clamp(32px, 3.3vw, 48px)/1.1 var(--serif); letter-spacing: -.025em; }
.section-heading p { max-width: 38ch; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; text-align: right; }
.matrix-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.theme-button {
  min-height: 132px;
  padding: 22px;
  border: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  text-align: left;
  transition: background 160ms ease, color 160ms ease;
}
.theme-button:hover { background: rgba(36, 84, 67, .045); }
.theme-button[aria-pressed="true"] { color: var(--paper); background: var(--forest); }
.theme-button:focus-visible { outline: 2px solid var(--forest); outline-offset: -3px; }
.theme-button b { display: block; margin-bottom: 24px; font: 600 12px/1 var(--mono); }
.theme-button strong { display: block; font: 600 19px/1.35 var(--serif); }
.theme-button small { display: block; margin-top: 8px; color: inherit; opacity: .72; font-size: 11px; line-height: 1.5; }

.research-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  align-items: start;
  gap: 74px;
  padding-top: 52px;
  border-top: 1px solid var(--line);
}
.research-yearbook { position: sticky; top: 26px; }
.yearbook-label { margin: 0 0 22px; color: var(--muted); font: 600 11px/1 var(--mono); letter-spacing: .12em; }
.yearbook-year { margin: 0; color: var(--forest); font: 400 150px/.82 Georgia, "Times New Roman", serif; letter-spacing: -.07em; }
.yearbook-copy { margin: 28px 0 26px; padding-bottom: 24px; border-bottom: 1px solid var(--ink); }
.yearbook-copy strong { display: block; font: 600 20px/1.3 var(--serif); }
.yearbook-copy span { display: block; margin-top: 7px; color: var(--muted); font-size: 12px; }
.yearbook-nav { display: grid; }
.yearbook-nav button {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  padding: 16px 0;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  cursor: pointer;
  text-align: left;
}
.yearbook-nav button[aria-pressed="true"] { color: var(--forest); font-weight: 700; }
.yearbook-nav b { font-size: 12px; }
.yearbook-note { margin: 24px 0 0; color: var(--muted); font-size: 11px; line-height: 1.8; }
.research-groups { min-width: 0; }
.research-group { margin-bottom: 68px; }
.research-group[hidden] { display: none; }
.group-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 360px);
  gap: 34px;
  align-items: end;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--ink);
}
.group-head h3 { margin: 0; font: 500 clamp(34px, 4vw, 54px)/1.08 var(--serif); letter-spacing: -.025em; }
.group-head p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; text-align: right; }
.article-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) 44px;
  gap: 28px;
  align-items: start;
  padding: 28px 0 30px;
  border-bottom: 1px solid var(--line);
}
.article-row[hidden] { display: none; }
.article-date { color: var(--forest); font: 600 11px/1.6 var(--mono); }
.article-category { display: block; margin-top: 8px; color: var(--muted); font-family: var(--body); }
.article-main h4 { margin: 0; font: 600 clamp(24px, 2.5vw, 34px)/1.35 var(--serif); letter-spacing: -.02em; }
.article-main h4 a { text-decoration: none; }
.article-main h4 a:hover { color: var(--forest); }
.article-main p { max-width: 68ch; margin: 12px 0 0; color: var(--muted); font-size: 13px; line-height: 1.85; }
.article-tags { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 16px; }
.article-tags span { padding: 4px 9px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: 10px; }
.open-link {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--forest);
  text-decoration: none;
  transition: border-color 160ms ease, transform 160ms ease;
}
.open-link:hover { border-color: var(--forest); transform: translateX(2px); }
.empty-state { padding: 46px 0; color: var(--muted); font: 16px/1.8 var(--serif); }

@media (max-width: 1000px) {
  .dossier-head { grid-template-columns: minmax(0, 1.35fr) minmax(260px, .65fr); gap: 42px; }
  .dossier-body { grid-template-columns: 150px minmax(0, 1fr); gap: 42px; }
  .home-hero { grid-template-columns: 1fr; }
  .home-hero h2 { max-width: none; }
  .matrix-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .research-layout { grid-template-columns: 220px minmax(0, 1fr); gap: 46px; }
  .yearbook-year { font-size: 110px; }
}

@media (max-width: 760px) {
  .site-head { padding-right: 20px; padding-left: 20px; }
  .brand-row { align-items: flex-start; flex-direction: column; }
  .site-note { text-align: left; }
  .section-nav { overflow-x: auto; grid-template-columns: repeat(4, minmax(145px, 1fr)); }
  .page-shell, .home-shell { width: min(100% - 32px, 680px); padding-top: 42px; }
  .dossier-head { grid-template-columns: 1fr; gap: 24px; }
  .dossier-copy { gap: 20px; }
  .dossier-number { font-size: 27px; }
  .dossier-abstract-panel { padding: 22px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .article-title { font-size: 42px; }
  .metric-strip { grid-template-columns: 1fr 1fr; }
  .metric:nth-child(2) { border-right: 0; }
  .metric:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .dossier-body { grid-template-columns: 1fr; }
  .record-panel { position: static; }
  .article-copy p { font-size: 16px; line-height: 1.92; text-align: left; }
  .home-summary dl { grid-template-columns: 1fr; }
  .home-summary dl div { border-right: 0; border-bottom: 1px solid var(--line); }
  .home-summary dl div:last-child { border-bottom: 0; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .section-heading p { text-align: left; }
  .research-layout { grid-template-columns: 1fr; }
  .research-yearbook { position: static; display: grid; grid-template-columns: minmax(130px, .4fr) minmax(0, .6fr); gap: 22px; }
  .yearbook-label, .yearbook-note { grid-column: 1 / -1; }
  .yearbook-year { font-size: 88px; }
  .yearbook-copy { margin-top: 0; }
  .group-head { grid-template-columns: 1fr; gap: 10px; }
  .group-head p { text-align: left; }
  .article-row { grid-template-columns: 86px minmax(0, 1fr) 40px; gap: 16px; }
}

@media (max-width: 520px) {
  .matrix-grid { grid-template-columns: 1fr; }
  .theme-button { min-height: 112px; }
  .research-yearbook { grid-template-columns: 1fr; }
  .yearbook-copy { margin-top: -4px; }
  .article-row { grid-template-columns: minmax(0, 1fr) 38px; }
  .article-date { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}