:root {
  --ink: #10283f;
  --ink-soft: #456074;
  --paper: #f4f2eb;
  --line: rgba(16, 40, 63, 0.18);
  --signal: #d95f38;
  --signal-soft: #f1d4c8;
  --white: #fbfaf6;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(rgba(16, 40, 63, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 40, 63, 0.045) 1px, transparent 1px),
    var(--paper);
  background-size: 40px 40px;
  color: var(--ink);
  font-family: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

.site-header {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1280px;
  padding: 22px 40px;
}

.wordmark {
  align-items: center;
  display: inline-flex;
  gap: 13px;
}

.wordmark-mark {
  align-items: center;
  background: var(--ink);
  color: var(--paper);
  display: inline-flex;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 14px;
  font-weight: 700;
  height: 38px;
  justify-content: center;
  letter-spacing: 0.08em;
  width: 38px;
}

.wordmark-copy {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.wordmark-copy strong {
  font-family: Georgia, "Times New Roman", "Songti SC", serif;
  font-size: 17px;
  letter-spacing: 0.02em;
}

.wordmark-copy small {
  color: var(--ink-soft);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

nav {
  display: flex;
  gap: 34px;
}

nav a {
  color: var(--ink-soft);
  font-size: 13px;
  letter-spacing: 0.06em;
  position: relative;
}

nav a::after {
  background: var(--signal);
  bottom: -7px;
  content: "";
  height: 2px;
  left: 0;
  position: absolute;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
  width: 100%;
}

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

.hero {
  display: grid;
  gap: clamp(48px, 8vw, 120px);
  grid-template-columns: minmax(0, 1.4fr) minmax(300px, 0.72fr);
  margin: 0 auto;
  max-width: 1280px;
  min-height: 680px;
  padding: clamp(90px, 11vw, 150px) 40px 100px;
}

.hero-copy {
  align-self: center;
}

.kicker,
.section-number {
  color: var(--signal);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  margin: 0 0 24px;
}

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

h1 {
  font-family: Georgia, "Times New Roman", "Songti SC", STSong, serif;
  font-size: clamp(52px, 6.9vw, 94px);
  font-weight: 500;
  letter-spacing: -0.055em;
  line-height: 1.08;
  margin-bottom: 34px;
}

.hero-intro {
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.9;
  margin-bottom: 36px;
  max-width: 610px;
}

.hero-actions {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
}

.primary-link {
  align-items: center;
  background: var(--ink);
  color: var(--white);
  display: inline-flex;
  font-size: 13px;
  gap: 30px;
  justify-content: space-between;
  min-width: 190px;
  padding: 15px 18px;
  transition: background 180ms ease, transform 180ms ease;
}

.primary-link:hover,
.primary-link:focus-visible {
  background: var(--signal);
  transform: translateY(-2px);
}

.text-link {
  border-bottom: 1px solid var(--ink);
  font-size: 13px;
  padding-bottom: 6px;
}

.research-map {
  align-self: center;
  background: var(--ink);
  box-shadow: 18px 18px 0 var(--signal-soft);
  color: var(--white);
  padding: 30px;
}

.map-heading {
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  display: flex;
  font-size: 10px;
  justify-content: space-between;
  letter-spacing: 0.16em;
  padding-bottom: 16px;
  text-transform: uppercase;
}

.research-map ol {
  list-style: none;
  margin: 0;
  padding: 14px 0 8px;
}

.research-map li {
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  display: grid;
  gap: 18px;
  grid-template-columns: 36px 1fr;
  padding: 22px 0;
}

.map-index {
  color: #e89676;
  font-family: Georgia, serif;
  font-size: 14px;
}

.research-map li div {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.research-map li strong {
  font-family: "Songti SC", STSong, Georgia, serif;
  font-size: 18px;
  font-weight: 500;
}

.research-map li small {
  color: rgba(255, 255, 255, 0.55);
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.map-note {
  color: rgba(255, 255, 255, 0.66);
  font-size: 12px;
  line-height: 1.8;
  margin: 20px 0 0;
}

.section {
  margin: 0 auto;
  max-width: 1280px;
  padding: 104px 40px;
}

.notes-section {
  border-top: 1px solid var(--line);
}

.section-heading {
  align-items: end;
  display: grid;
  gap: 48px;
  grid-template-columns: 1fr 1fr;
  margin-bottom: 54px;
}

.section-heading .section-number,
.about-section .section-number {
  margin-bottom: 13px;
}

.section-heading h2,
.about-section h2 {
  font-family: Georgia, "Times New Roman", "Songti SC", serif;
  font-size: clamp(38px, 4.5vw, 62px);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 0;
}

.section-heading > p {
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.9;
  margin: 0;
  max-width: 490px;
}

.notes-grid {
  background: var(--line);
  border: 1px solid var(--line);
  display: grid;
  gap: 1px;
  grid-template-columns: repeat(3, 1fr);
}

.note-card {
  background: var(--white);
  display: flex;
  flex-direction: column;
  min-height: 340px;
  padding: 28px;
  transition: background 180ms ease, transform 180ms ease;
}

.note-card:hover {
  background: #fff;
  transform: translateY(-4px);
}

.note-meta {
  color: var(--signal);
  display: flex;
  font-size: 10px;
  justify-content: space-between;
  letter-spacing: 0.12em;
  margin-bottom: 52px;
  text-transform: uppercase;
}

.note-card h3 {
  font-family: "Songti SC", STSong, Georgia, serif;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.45;
  margin-bottom: 18px;
}

.note-card > p {
  color: var(--ink-soft);
  font-size: 13px;
  line-height: 1.9;
  margin-bottom: 28px;
}

.note-card ul {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  list-style: none;
  margin: auto 0 0;
  padding: 0;
}

.note-card li {
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 10px;
  padding: 6px 9px;
}

.reports-section {
  background: var(--ink);
  color: var(--white);
  max-width: none;
  padding-left: max(40px, calc((100vw - 1200px) / 2));
  padding-right: max(40px, calc((100vw - 1200px) / 2));
}

.reports-section .section-number {
  color: #e89676;
}

.reports-section .section-heading > p {
  color: rgba(255, 255, 255, 0.58);
}

.report-list {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.report-row {
  align-items: start;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  display: grid;
  gap: 24px;
  grid-template-columns: 44px 1fr 30px;
  padding: 32px 6px;
  transition: background 180ms ease, padding 180ms ease;
}

.report-row:hover,
.report-row:focus-visible {
  background: rgba(255, 255, 255, 0.055);
  padding-left: 18px;
  padding-right: 18px;
}

.report-count {
  color: #e89676;
  font-family: Georgia, serif;
  font-size: 13px;
  padding-top: 4px;
}

.report-venue {
  color: rgba(255, 255, 255, 0.5);
  font-size: 10px;
  letter-spacing: 0.1em;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.report-content h3 {
  font-family: Georgia, "Times New Roman", "Songti SC", serif;
  font-size: clamp(18px, 2.1vw, 26px);
  font-weight: 500;
  line-height: 1.35;
  margin-bottom: 11px;
}

.report-description {
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
  line-height: 1.75;
  margin-bottom: 0;
}

.report-arrow {
  color: #e89676;
  font-size: 20px;
  padding-top: 2px;
}

.about-section {
  display: grid;
  gap: 80px;
  grid-template-columns: 0.8fr 1.2fr;
  margin: 0 auto;
  max-width: 1280px;
  padding: 108px 40px;
}

.about-copy {
  border-left: 3px solid var(--signal);
  padding-left: 34px;
}

.about-copy p {
  color: var(--ink-soft);
  font-family: "Songti SC", STSong, Georgia, serif;
  font-size: 18px;
  line-height: 1.95;
  margin-bottom: 18px;
}

footer {
  align-items: end;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  margin: 0 auto;
  max-width: 1280px;
  padding: 34px 40px 44px;
}

footer div {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

footer strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16px;
}

footer span,
footer p {
  color: var(--ink-soft);
  font-size: 10px;
  letter-spacing: 0.08em;
  margin: 0;
}

footer p {
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .site-header,
  .hero,
  .section,
  .about-section,
  footer {
    padding-left: 24px;
    padding-right: 24px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-bottom: 90px;
    padding-top: 90px;
  }

  .research-map {
    max-width: 560px;
  }

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

  .note-card {
    min-height: 300px;
  }

  .reports-section {
    padding-left: 24px;
    padding-right: 24px;
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
  }

  .wordmark-copy small {
    display: none;
  }

  nav {
    gap: 15px;
    padding-top: 11px;
  }

  nav a {
    font-size: 11px;
  }

  .hero {
    min-height: auto;
    padding-bottom: 76px;
    padding-top: 76px;
  }

  h1 {
    font-size: clamp(46px, 14vw, 64px);
  }

  .hero-intro {
    font-size: 15px;
  }

  .research-map {
    box-shadow: 9px 9px 0 var(--signal-soft);
    padding: 24px;
  }

  .section {
    padding-bottom: 78px;
    padding-top: 78px;
  }

  .section-heading {
    align-items: start;
    gap: 24px;
    grid-template-columns: 1fr;
  }

  .report-row {
    gap: 13px;
    grid-template-columns: 28px 1fr 18px;
  }

  .report-description {
    display: none;
  }

  .about-section {
    gap: 38px;
    grid-template-columns: 1fr;
    padding-bottom: 78px;
    padding-top: 78px;
  }

  .about-copy {
    padding-left: 24px;
  }

  footer {
    align-items: start;
    flex-direction: column;
    gap: 20px;
  }
}

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

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