:root {
  --ink: #122020;
  --forest: #102b2b;
  --forest-2: #173b38;
  --paper: #f5f2ea;
  --white: #fffdf8;
  --mist: #e6ebe5;
  --line: rgba(18, 32, 32, 0.16);
  --line-light: rgba(255, 253, 248, 0.2);
  --muted: #66706c;
  --sage: #87a69b;
  --copper: #b56a45;
  --burgundy: #8f2130;
  --font-sans: "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;
  --font-serif: "Songti SC", "STSong", "Noto Serif CJK SC", SimSun, serif;
  --shell: min(1180px, calc(100vw - 48px));
  --radius: 3px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

body::selection {
  color: var(--white);
  background: var(--burgundy);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

h1,
h2,
h3 {
  text-wrap: balance;
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  transform: translateY(-150%);
  padding: 10px 14px;
  color: var(--white);
  background: var(--forest);
}

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

:focus-visible {
  outline: 2px solid var(--copper);
  outline-offset: 4px;
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  background: rgba(255, 253, 248, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.brand {
  min-width: 0;
  display: inline-flex;
  align-items: center;
  gap: 13px;
}

.brand-mark,
.wechat-mark {
  position: relative;
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  color: var(--white);
  background: var(--burgundy);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 25px;
  font-weight: 700;
}

.brand-mark::before,
.wechat-mark::before {
  position: absolute;
  content: "";
  inset: 5px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: inherit;
}

.brand-mark::after,
.wechat-mark::after {
  position: absolute;
  content: "";
  width: 5px;
  height: 5px;
  right: -2px;
  top: 8px;
  background: var(--copper);
  border-radius: 50%;
  box-shadow: -35px 26px 0 var(--sage);
}

.brand-mark span,
.wechat-mark span {
  position: relative;
  z-index: 1;
}

.brand-copy {
  display: grid;
  line-height: 1.2;
}

.brand-copy strong {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.brand-copy small {
  margin-top: 5px;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 9px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.site-nav a {
  position: relative;
  padding: 28px 0 25px;
  color: #3f4d49;
  font-size: 14px;
}

.site-nav a::after {
  position: absolute;
  content: "";
  right: 0;
  bottom: 20px;
  left: 0;
  height: 1px;
  background: var(--burgundy);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
}

.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 0;
}

.nav-toggle > span:not(.sr-only) {
  width: 22px;
  height: 1px;
  display: block;
  margin: 5px auto;
  background: var(--ink);
  transition: transform 180ms ease, opacity 180ms ease;
}

.hero,
.page-hero,
.profile-hero {
  position: relative;
  overflow: hidden;
  color: var(--white);
  background: var(--forest);
}

.hero::before,
.page-hero::before,
.profile-hero::before {
  position: absolute;
  content: "";
  width: 520px;
  height: 520px;
  top: -320px;
  right: -80px;
  border: 1px solid rgba(255, 253, 248, 0.1);
  border-radius: 50%;
  box-shadow: 0 0 0 70px rgba(255, 253, 248, 0.025), 0 0 0 150px rgba(255, 253, 248, 0.02);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  min-height: 650px;
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(420px, 0.97fr);
  align-items: center;
  gap: 54px;
  padding-block: 76px 62px;
}

.hero-copy h1 {
  max-width: 760px;
  margin: 22px 0 30px;
  font-family: var(--font-serif);
  font-size: clamp(44px, 5.2vw, 72px);
  font-weight: 500;
  line-height: 1.13;
  letter-spacing: -0.035em;
}

.hero-copy h1 em {
  color: #b8cec4;
  font-style: normal;
}

.hero-copy > p {
  max-width: 650px;
  margin-bottom: 34px;
  color: rgba(255, 253, 248, 0.76);
  font-size: 18px;
  line-height: 1.9;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--burgundy);
  font-family: Arial, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 26px;
  height: 1px;
  content: "";
  background: currentColor;
}

.eyebrow.light {
  color: #a9c3b8;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button--light {
  color: var(--forest);
  background: var(--white);
}

.button--light:hover {
  background: #dfe8e1;
}

.button--ghost {
  color: var(--white);
  border-color: rgba(255, 253, 248, 0.35);
}

.button--ghost:hover {
  border-color: var(--white);
}

.arrow {
  display: inline-block;
  font-family: Arial, sans-serif;
  transition: transform 180ms ease;
}

a:hover .arrow,
.button:hover .arrow {
  transform: translate(2px, -2px);
}

.hero-figure {
  position: relative;
  width: min(100%, 520px);
  max-width: 520px;
  justify-self: end;
}

.hero-figure::before {
  position: absolute;
  content: "";
  inset: 14%;
  background: rgba(135, 166, 155, 0.08);
  border-radius: 50%;
  filter: blur(4px);
}

.hero-figure svg {
  position: relative;
  overflow: visible;
}

.hero-figure .orbit,
.hero-figure line,
.hero-figure .signal {
  fill: none;
  stroke: rgba(255, 253, 248, 0.16);
  stroke-width: 1;
}

.hero-figure .orbit-b {
  stroke-dasharray: 4 10;
}

.hero-figure .signal {
  stroke: rgba(181, 106, 69, 0.46);
  stroke-dasharray: 3 7;
}

.hero-figure .node {
  fill: rgba(255, 253, 248, 0.04);
  stroke: rgba(255, 253, 248, 0.36);
}

.hero-figure .node-b {
  fill: rgba(181, 106, 69, 0.12);
}

.hero-figure .node-c {
  fill: rgba(135, 166, 155, 0.12);
}

.hero-figure .node-core {
  fill: var(--burgundy);
}

.hero-figure text {
  fill: var(--white);
  font-family: var(--font-serif);
  font-size: 18px;
  text-anchor: middle;
}

.hero-figure .core-label {
  font-family: var(--font-sans);
  font-size: 10px;
}

.hero-figure .edge-label {
  fill: rgba(255, 253, 248, 0.34);
  font-family: Arial, sans-serif;
  font-size: 10px;
  letter-spacing: 0.22em;
  text-anchor: start;
}

.hero-index {
  min-height: 78px;
  display: grid;
  grid-template-columns: 1.25fr repeat(4, 1fr);
  border-top: 1px solid var(--line-light);
}

.hero-index > * {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 18px;
  color: rgba(255, 253, 248, 0.7);
  border-right: 1px solid var(--line-light);
  font-size: 12px;
}

.hero-index > *:first-child {
  padding-left: 0;
  color: #a9c3b8;
  font-family: Arial, sans-serif;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero-index > *:last-child {
  border-right: 0;
}

.hero-index b {
  color: var(--copper);
  font-family: Arial, sans-serif;
  font-size: 10px;
}

.section {
  padding-block: 104px;
}

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

.section--mist {
  background: var(--mist);
}

.section--ink {
  color: var(--white);
  background: #182423;
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 72px;
  align-items: end;
  margin-bottom: 58px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.section--ink .section-intro {
  border-color: var(--line-light);
}

.section-intro h2,
.method-grid h2,
.cta-inner h2,
.note-panel h2,
.wechat-grid h2,
.contact-primary h2,
.source-panel h2 {
  max-width: 720px;
  margin: 14px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(32px, 3.5vw, 50px);
  font-weight: 500;
  line-height: 1.24;
  letter-spacing: -0.025em;
}

.section-intro > div:last-child > p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 16px;
}

.section--ink .section-intro > div:last-child > p {
  color: rgba(255, 253, 248, 0.62);
}

.text-link,
.card-link,
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--burgundy);
  font-size: 13px;
  font-weight: 600;
}

.section--ink .text-link,
.section--ink .card-link {
  color: #b8cec4;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.research-card {
  min-height: 280px;
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 22px;
  padding: 34px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: color 200ms ease, background 200ms ease;
}

.research-card:hover {
  color: var(--white);
  background: var(--forest);
}

.research-number,
.research-detail-head > span {
  color: var(--burgundy);
  font-family: Georgia, serif;
  font-size: 13px;
}

.research-card:hover .research-number {
  color: #c98b6b;
}

.research-card-copy > p {
  margin: 0 0 24px;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.research-card:hover .research-card-copy > p,
.research-card:hover .research-card-copy > div {
  color: rgba(255, 253, 248, 0.66);
}

.research-card h3 {
  margin-bottom: 16px;
  font-family: var(--font-serif);
  font-size: 27px;
  font-weight: 500;
}

.research-card-copy > div {
  max-width: 460px;
  color: var(--muted);
  font-size: 14px;
}

.people-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.person-card {
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 16px 16px 24px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid transparent;
}

.section--ink .person-card {
  color: var(--white);
  background: rgba(255, 253, 248, 0.035);
  border-color: var(--line-light);
}

.person-portrait {
  position: relative;
  aspect-ratio: 4 / 4.35;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--forest);
  background: #d9e0d8;
}

.person-card:nth-child(2) .person-portrait {
  background: #e3d8d0;
}

.person-card:nth-child(3) .person-portrait {
  background: #d5dcdd;
}

.person-card:nth-child(4) .person-portrait {
  background: #e1dfd4;
}

.person-portrait::before,
.profile-portrait::before {
  position: absolute;
  content: "";
  width: 68%;
  aspect-ratio: 1;
  border: 1px solid rgba(16, 43, 43, 0.18);
  border-radius: 50%;
  box-shadow: 0 0 0 28px rgba(16, 43, 43, 0.035), 0 0 0 58px rgba(16, 43, 43, 0.025);
}

.person-portrait::after {
  position: absolute;
  content: "";
  width: 115%;
  height: 1px;
  background: rgba(16, 43, 43, 0.18);
  transform: rotate(-30deg);
}

.person-portrait > span,
.profile-portrait > span {
  position: relative;
  z-index: 1;
  font-family: Georgia, serif;
  font-size: clamp(34px, 4.3vw, 54px);
  letter-spacing: -0.05em;
}

.person-portrait img,
.profile-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.person-portrait.has-photo::before,
.person-portrait.has-photo::after,
.profile-portrait.has-photo::before {
  display: none;
}

.person-meta {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-top: 22px;
}

.person-meta h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 25px;
  font-weight: 500;
}

.person-meta p {
  margin: 4px 0 0;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 10px;
}

.section--ink .person-meta p,
.section--ink .person-intro {
  color: rgba(255, 253, 248, 0.58);
}

.person-role {
  padding: 4px 7px;
  color: var(--burgundy);
  background: rgba(143, 33, 48, 0.07);
  border-radius: 2px;
  font-size: 10px;
  white-space: nowrap;
}

.section--ink .person-role {
  color: #d69b7c;
  background: rgba(181, 106, 69, 0.12);
}

.person-intro {
  margin: 18px 0;
  color: var(--muted);
  font-size: 13px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.tag-list > span {
  padding: 5px 9px;
  color: #4c5b56;
  background: rgba(18, 32, 32, 0.055);
  border-radius: 999px;
  font-size: 10px;
}

.section--ink .tag-list > span,
.tag-list--light > span {
  color: rgba(255, 253, 248, 0.72);
  background: rgba(255, 253, 248, 0.075);
}

.person-card .card-link {
  margin-top: auto;
  padding-top: 24px;
}

.publication-list {
  border-top: 1px solid var(--line);
}

.publication-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 34px;
  padding: 34px 0;
  border-bottom: 1px solid var(--line);
}

.publication-year {
  color: var(--burgundy);
  font-family: Georgia, serif;
  font-size: 15px;
}

.publication-type {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.publication-copy h3 {
  max-width: 990px;
  margin-bottom: 11px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 22px;
  font-weight: 400;
  line-height: 1.42;
}

.publication-copy .authors {
  margin-bottom: 5px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.publication-copy .journal {
  margin-bottom: 0;
  color: #374641;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 13px;
}

.publication-item--compact {
  grid-template-columns: 70px 1fr;
  gap: 26px;
  padding-block: 27px;
}

.publication-item--compact .publication-copy h3 {
  font-size: 19px;
}

.news-list {
  border-top: 1px solid var(--line);
}

.news-row {
  display: grid;
  grid-template-columns: 125px 1fr 110px;
  gap: 32px;
  align-items: center;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

.news-row time,
.news-source {
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 11px;
  letter-spacing: 0.05em;
}

.news-row > div > span,
.news-category {
  color: var(--burgundy);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.news-row h3 {
  margin: 3px 0 0;
  font-family: var(--font-serif);
  font-size: 21px;
  font-weight: 500;
}

.news-source {
  text-align: right;
}

.cta-band,
.method-band,
.wechat-band {
  color: var(--white);
  background: var(--forest-2);
}

.cta-inner {
  min-height: 265px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}

.cta-inner > div > span {
  color: #a9c3b8;
  font-family: Arial, sans-serif;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.cta-inner h2 {
  margin-top: 10px;
}

.page-hero-grid {
  position: relative;
  z-index: 1;
  min-height: 360px;
  display: grid;
  grid-template-columns: 1fr minmax(340px, 0.65fr);
  align-items: end;
  gap: 80px;
  padding-block: 90px 76px;
}

.page-hero h1 {
  margin: 18px 0 0;
  font-family: var(--font-serif);
  font-size: clamp(50px, 6vw, 78px);
  font-weight: 500;
  line-height: 1.08;
}

.page-hero-grid > p {
  margin: 0;
  color: rgba(255, 253, 248, 0.68);
  font-size: 17px;
  line-height: 1.9;
}

.page-index {
  position: absolute;
  right: 1.5vw;
  bottom: -0.35em;
  color: rgba(255, 255, 255, 0.035);
  font-family: Georgia, serif;
  font-size: 280px;
  line-height: 1;
}

.research-details {
  border-top: 1px solid var(--line);
}

.research-detail {
  display: grid;
  grid-template-columns: 180px minmax(0, 1.1fr) minmax(280px, 0.7fr);
  gap: 48px;
  padding: 60px 0;
  border-bottom: 1px solid var(--line);
}

.research-detail-head p {
  margin: 12px 0 0;
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 10px;
  line-height: 1.5;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.research-detail-main h2 {
  margin: -8px 0 18px;
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 500;
}

.research-detail-main > p {
  color: var(--muted);
}

.research-detail-main .tag-list {
  margin-top: 26px;
}

.research-questions h3 {
  margin: 0 0 18px;
  font-size: 12px;
  font-weight: 600;
}

.research-questions ul,
.clean-list,
.timeline,
.source-panel ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

.research-questions li,
.clean-list li {
  position: relative;
  padding: 10px 0 10px 18px;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.research-questions li::before,
.clean-list li::before {
  position: absolute;
  left: 0;
  content: "·";
  color: var(--burgundy);
  font-weight: 700;
}

.method-grid {
  min-height: 430px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 90px;
  align-items: center;
}

.method-steps {
  padding: 0;
  margin: 0;
  list-style: none;
  border-top: 1px solid var(--line-light);
}

.method-steps li {
  display: grid;
  grid-template-columns: 55px 1fr;
  gap: 18px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line-light);
}

.method-steps b {
  color: var(--copper);
  font-family: Georgia, serif;
  font-size: 11px;
}

.people-grid--page {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.people-grid--page .person-card {
  display: grid;
  grid-template-columns: minmax(180px, 0.74fr) 1fr;
  grid-template-rows: auto auto auto 1fr;
  column-gap: 28px;
  padding: 20px;
}

.people-grid--page .person-portrait {
  grid-row: 1 / 5;
}

.people-grid--page .person-meta {
  margin-top: 10px;
}

.people-grid--page .person-intro {
  margin-block: 14px;
}

.people-grid--page .card-link {
  align-self: end;
}

.note-panel,
.source-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.78fr);
  gap: 90px;
  align-items: center;
  padding: 42px;
  border: 1px solid var(--line);
}

.note-panel h2,
.source-panel h2 {
  font-size: 36px;
}

.note-panel > p,
.source-panel > div > p {
  margin: 0;
  color: var(--muted);
}

.profile-grid {
  position: relative;
  z-index: 1;
  min-height: 570px;
  display: grid;
  grid-template-columns: minmax(300px, 0.8fr) minmax(0, 1.2fr);
  gap: 80px;
  align-items: center;
  padding-block: 70px;
}

.profile-portrait {
  position: relative;
  aspect-ratio: 1;
  max-width: 430px;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--forest);
  background: #d9e0d8;
}

.profile-portrait > span {
  font-size: clamp(56px, 8vw, 96px);
}

.back-link {
  margin-bottom: 48px;
  color: rgba(255, 253, 248, 0.6);
}

.profile-head h1 {
  margin: 14px 0 4px;
  font-family: var(--font-serif);
  font-size: clamp(56px, 7vw, 90px);
  font-weight: 500;
  line-height: 1.08;
}

.profile-english {
  color: #a9c3b8;
  font-family: Georgia, serif;
  font-size: 18px;
}

.profile-intro {
  max-width: 690px;
  margin: 30px 0 28px;
  color: rgba(255, 253, 248, 0.7);
  font-size: 16px;
}

.profile-body {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 52px;
}

.profile-column h2 {
  margin-bottom: 26px;
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
}

.timeline li {
  position: relative;
  padding: 0 0 22px 22px;
  color: var(--muted);
  font-size: 13px;
}

.timeline li::before {
  position: absolute;
  top: 9px;
  left: 0;
  width: 7px;
  height: 7px;
  content: "";
  background: var(--paper);
  border: 2px solid var(--burgundy);
  border-radius: 50%;
}

.timeline li:not(:last-child)::after {
  position: absolute;
  top: 19px;
  bottom: 0;
  left: 4px;
  width: 1px;
  content: "";
  background: var(--line);
}

.filters {
  display: grid;
  gap: 12px;
  margin-bottom: 48px;
  padding: 22px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.filters > div {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.filters > div > span {
  width: 54px;
  color: var(--muted);
  font-size: 11px;
}

.filters button {
  padding: 6px 11px;
  color: #4c5b56;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 999px;
  cursor: pointer;
  font-size: 11px;
}

.filters button:hover,
.filters button.is-active {
  color: var(--white);
  background: var(--forest);
}

.publication-item[hidden] {
  display: none;
}

.empty-state {
  padding: 50px 0;
  color: var(--muted);
  text-align: center;
}

.news-cards {
  border-top: 1px solid var(--line);
}

.news-card {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr) 150px;
  gap: 42px;
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.news-date b {
  display: block;
  color: var(--burgundy);
  font-family: Georgia, serif;
  font-size: 40px;
  font-weight: 400;
  line-height: 1;
}

.news-date span {
  color: var(--muted);
  font-family: Arial, sans-serif;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.news-card h2 {
  margin: 6px 0 12px;
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  line-height: 1.42;
}

.news-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.news-card-source {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  color: var(--muted);
  font-size: 11px;
}

.news-card-source a {
  color: var(--burgundy);
}

.pending-link {
  padding: 4px 8px;
  background: rgba(18, 32, 32, 0.06);
  border-radius: 2px;
}

.wechat-grid {
  min-height: 300px;
  display: grid;
  grid-template-columns: 110px 1fr minmax(260px, 0.6fr);
  gap: 44px;
  align-items: center;
}

.wechat-mark {
  width: 92px;
  height: 92px;
  font-size: 48px;
}

.wechat-grid h2 {
  margin: 8px 0 12px;
  font-size: 36px;
}

.wechat-grid p,
.wechat-note {
  margin: 0;
  color: rgba(255, 253, 248, 0.65);
  font-size: 13px;
}

.wechat-note {
  padding-left: 32px;
  border-left: 1px solid var(--line-light);
}

code {
  color: #d69b7c;
  font-family: Consolas, monospace;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
}

.contact-primary {
  grid-row: span 2;
  min-height: 480px;
  padding: 52px;
  color: var(--white);
  background: var(--forest);
}

.contact-primary h2 {
  margin-top: 20px;
}

.contact-line {
  margin: 70px 0 24px;
  color: #b8cec4;
  font-family: var(--font-serif);
  font-size: 24px;
}

.contact-primary > p {
  max-width: 480px;
  color: rgba(255, 253, 248, 0.58);
}

.contact-panel {
  padding: 34px;
  border: 1px solid var(--line);
}

.contact-panel h3 {
  margin-bottom: 18px;
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 500;
}

.source-panel ul {
  border-top: 1px solid var(--line);
}

.source-panel li {
  border-bottom: 1px solid var(--line);
}

.source-panel a {
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
  color: var(--burgundy);
  font-size: 13px;
}

.site-footer {
  padding: 70px 0 26px;
  color: rgba(255, 253, 248, 0.72);
  background: #0d1b1b;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.7fr 1fr;
  gap: 60px;
  padding-bottom: 54px;
}

.footer-brand {
  color: var(--white);
  font-family: var(--font-serif);
  font-size: 24px;
}

.footer-grid p {
  margin: 8px 0 0;
  color: rgba(255, 253, 248, 0.46);
  font-size: 12px;
}

.footer-label {
  margin-bottom: 13px;
  color: #a9c3b8;
  font-family: Arial, sans-serif;
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-links {
  display: grid;
  gap: 5px;
  font-size: 12px;
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-top: 22px;
  color: rgba(255, 253, 248, 0.36);
  border-top: 1px solid rgba(255, 253, 248, 0.1);
  font-family: Arial, sans-serif;
  font-size: 10px;
}

@media (max-width: 1040px) {
  :root {
    --shell: min(100% - 40px, 920px);
  }

  .site-nav {
    gap: 19px;
  }

  .hero-grid {
    min-height: 590px;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 22px;
  }

  .hero-copy h1 {
    font-size: 52px;
  }

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

  .research-detail {
    grid-template-columns: 120px 1fr;
  }

  .research-questions {
    grid-column: 2;
  }

  .people-grid--page .person-card {
    grid-template-columns: 145px 1fr;
  }
}

@media (max-width: 780px) {
  :root {
    --shell: min(100% - 32px, 680px);
  }

  .header-inner {
    min-height: 70px;
  }

  .brand-mark {
    width: 41px;
    height: 41px;
  }

  .brand-copy strong {
    font-size: 16px;
  }

  .brand-copy small {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .nav-toggle[aria-expanded="true"] > span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] > span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] > span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .site-nav {
    position: absolute;
    top: 70px;
    right: 0;
    left: 0;
    display: grid;
    gap: 0;
    padding: 8px 16px 18px;
    visibility: hidden;
    opacity: 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    transition: opacity 160ms ease, transform 160ms ease, visibility 160ms ease;
  }

  .site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: none;
  }

  .site-nav a {
    padding: 13px 4px;
    border-bottom: 1px solid var(--line);
  }

  .site-nav a::after {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 0;
    padding-block: 70px 30px;
  }

  .hero-copy h1 {
    font-size: clamp(39px, 11vw, 58px);
  }

  .hero-copy > p {
    font-size: 16px;
  }

  .hero-figure {
    width: min(100%, 460px);
    margin: 8px auto 0;
    justify-self: center;
  }

  .hero-index {
    grid-template-columns: repeat(2, 1fr);
    padding-bottom: 18px;
  }

  .hero-index > * {
    min-height: 52px;
    padding: 12px 0;
    border-right: 0;
    border-bottom: 1px solid var(--line-light);
  }

  .hero-index > *:first-child {
    grid-column: 1 / -1;
  }

  .section {
    padding-block: 76px;
  }

  .section-intro,
  .page-hero-grid,
  .method-grid,
  .note-panel,
  .source-panel,
  .profile-grid,
  .profile-body,
  .wechat-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .section-intro {
    gap: 24px;
    margin-bottom: 40px;
  }

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

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

  .page-hero-grid {
    min-height: 330px;
    gap: 34px;
    padding-block: 70px 60px;
  }

  .page-index {
    font-size: 180px;
  }

  .research-detail {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 44px 0;
  }

  .research-questions {
    grid-column: 1;
  }

  .method-grid {
    gap: 50px;
    padding-block: 70px;
  }

  .people-grid--page .person-card {
    grid-template-columns: minmax(125px, 0.7fr) 1fr;
  }

  .note-panel,
  .source-panel {
    gap: 30px;
    padding: 30px;
  }

  .profile-grid {
    gap: 42px;
    padding-block: 50px 70px;
  }

  .profile-portrait {
    width: min(100%, 360px);
  }

  .profile-body {
    gap: 42px;
  }

  .news-card {
    grid-template-columns: 80px 1fr;
    gap: 24px;
  }

  .news-card-source {
    grid-column: 2;
    flex-direction: row;
    align-items: center;
  }

  .wechat-grid {
    gap: 25px;
    padding-block: 60px;
  }

  .wechat-note {
    padding: 24px 0 0;
    border-top: 1px solid var(--line-light);
    border-left: 0;
  }

  .contact-primary {
    grid-row: auto;
  }

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

@media (max-width: 540px) {
  :root {
    --shell: calc(100% - 26px);
  }

  .brand-copy strong {
    max-width: 205px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .hero-grid {
    min-height: auto;
    padding-top: 56px;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-figure {
    margin-top: 20px;
  }

  .section-intro h2,
  .method-grid h2,
  .cta-inner h2,
  .note-panel h2,
  .source-panel h2 {
    font-size: 32px;
  }

  .research-card {
    grid-template-columns: 42px 1fr;
    gap: 15px;
    padding: 27px 20px;
  }

  .people-grid,
  .people-grid--page {
    grid-template-columns: 1fr;
  }

  .people-grid--page .person-card {
    display: flex;
  }

  .person-portrait {
    aspect-ratio: 4 / 3;
  }

  .publication-item,
  .publication-item--compact {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .publication-copy h3,
  .publication-item--compact .publication-copy h3 {
    font-size: 18px;
  }

  .news-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .news-source {
    text-align: left;
  }

  .cta-inner {
    align-items: flex-start;
    flex-direction: column;
    justify-content: center;
    padding-block: 60px;
  }

  .page-hero h1 {
    font-size: 50px;
  }

  .profile-head h1 {
    font-size: 58px;
  }

  .news-card {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .news-date {
    display: flex;
    align-items: baseline;
    gap: 9px;
  }

  .news-card-source {
    grid-column: 1;
  }

  .contact-primary {
    min-height: 410px;
    padding: 32px 26px;
  }

  .contact-line {
    margin-top: 52px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}