:root {
  --navy-950: #041c31;
  --navy-900: #082b49;
  --navy-800: #0b3a60;
  --blue-600: #0877b9;
  --blue-100: #dceff8;
  --orange: #ff6b2c;
  --paper: #f7f8f9;
  --white: #fff;
  --ink: #172938;
  --muted: #5b6a77;
  --line: #d9e0e5;
  --max-width: 1180px;
  --shadow: 0 16px 44px rgba(4, 28, 49, 0.11);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

.skip-link {
  position: fixed;
  top: -80px;
  left: 1rem;
  z-index: 1000;
  padding: 0.7rem 1rem;
  color: var(--white);
  background: var(--navy-950);
}

.skip-link:focus {
  top: 1rem;
}

.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;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.22);
  transition: background 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(4, 28, 49, 0.97);
  box-shadow: 0 8px 26px rgba(2, 16, 28, 0.2);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  width: min(var(--max-width), calc(100% - 3rem));
  min-height: 74px;
  margin: auto;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 0.32em;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.65rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
  white-space: nowrap;
}

.brand span {
  font: inherit;
}

.brand span:last-child {
  color: var(--orange);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.85rem, 1.8vw, 1.55rem);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.site-nav a {
  position: relative;
  padding: 0.45rem 0;
  white-space: nowrap;
}

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

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

.menu-button {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px 8px;
  border: 0;
  background: transparent;
}

.menu-button span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--white);
}

.hero {
  position: relative;
  display: grid;
  min-height: 620px;
  align-items: end;
  overflow: hidden;
  color: var(--white);
  background: var(--navy-950);
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
}

.hero-image {
  background-image:
    url("images/chengdu-concert-hall.jpg"),
    url("images/chengdu-banner.png");
  background-position: center 58%, center;
  background-size: cover, cover;
  transform: scale(1.015);
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(3, 24, 42, 0.94) 0%, rgba(4, 30, 52, 0.69) 50%, rgba(4, 30, 52, 0.25) 100%),
    linear-gradient(0deg, rgba(4, 28, 49, 0.85) 0%, transparent 45%);
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(var(--max-width), calc(100% - 3rem));
  margin: auto;
  padding: 10rem 0 6rem;
}

.hero-edition {
  margin: 0 0 0.15rem;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  letter-spacing: 0.02em;
}

.hero h1 {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2em;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(4rem, 10vw, 8.5rem);
  font-weight: 700;
  letter-spacing: -0.065em;
  line-height: 0.92;
}

.hero h1 span {
  font: inherit;
}

.hero h1 span:last-child {
  color: var(--orange);
}

.hero-full-name {
  max-width: 900px;
  margin: 0.65rem 0 0;
  color: rgba(255, 255, 255, 0.94);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.4rem, 3vw, 2.35rem);
  line-height: 1.18;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.8rem;
  margin-top: 2rem;
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.hero-facts span + span {
  position: relative;
}

.hero-facts span + span::before {
  position: absolute;
  left: -1rem;
  color: var(--orange);
  content: "•";
}

.photo-credit {
  position: absolute;
  right: max(1.5rem, calc((100% - var(--max-width)) / 2));
  bottom: 0.8rem;
  z-index: 3;
  margin: 0;
  color: rgba(255, 255, 255, 0.65);
  font-size: 0.68rem;
}

.photo-credit a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 4rem;
  width: min(var(--max-width), calc(100% - 3rem));
  margin: 0 auto;
  padding: 4.5rem 0 6rem;
  align-items: start;
}

.main-column {
  min-width: 0;
}

.content-section {
  padding: 0 0 4.5rem;
  margin: 0 0 4.5rem;
  border-bottom: 1px solid var(--line);
}

.content-section:last-child {
  margin-bottom: 0;
  border-bottom: 0;
}

.section-label {
  margin: 0 0 0.45rem;
  color: var(--blue-600);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.content-section h2 {
  margin: 0 0 1.25rem;
  color: var(--navy-950);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 4vw, 3.3rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

.content-section h3 {
  margin: 0;
  color: var(--navy-900);
  font-size: 1rem;
}

.content-section p {
  max-width: 760px;
}

.lead {
  color: var(--navy-900);
  font-size: 1.18rem;
  font-weight: 600;
}

.host-strip {
  display: flex;
  max-width: 760px;
  align-items: center;
  gap: 1.15rem;
  padding: 1rem 1.2rem;
  margin-top: 1.8rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 4px solid var(--orange);
}

.host-strip img {
  width: 54px;
  height: 54px;
  object-fit: contain;
}

.host-strip span,
.host-strip strong {
  display: block;
}

.host-strip span {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.host-strip strong {
  color: var(--navy-900);
  line-height: 1.3;
}

.table-wrap {
  max-width: 820px;
  margin-top: 1.5rem;
  overflow-x: auto;
  border: 1px solid var(--line);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  font-size: 0.92rem;
}

th,
td {
  padding: 0.9rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

thead th {
  color: var(--white);
  background: var(--navy-900);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

tbody th {
  color: var(--navy-900);
  background: #eef4f7;
  font-weight: 700;
}

tbody tr:last-child th,
tbody tr:last-child td {
  border-bottom: 0;
}

.small-note {
  color: var(--muted);
  font-size: 0.82rem;
}

.table-link {
  color: var(--blue-600);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.topic-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.35rem 2rem;
  max-width: 820px;
  padding: 0;
  margin: 1.6rem 0 0;
  list-style: none;
}

.topic-list li {
  position: relative;
  padding: 0.45rem 0 0.45rem 1.05rem;
  border-bottom: 1px dotted var(--line);
}

.topic-list li::before {
  position: absolute;
  top: 0.48rem;
  left: 0;
  color: var(--orange);
  content: "•";
  font-weight: 900;
}

.notice {
  max-width: 800px;
  padding: 1rem 1.2rem;
  margin-bottom: 1.4rem;
  color: var(--navy-900);
  background: var(--blue-100);
  border-left: 4px solid var(--blue-600);
}

.guideline-list {
  max-width: 800px;
  padding-left: 1.25rem;
}

.guideline-list li {
  margin: 0.55rem 0;
}

.empty-state {
  max-width: 820px;
  padding: 1rem 1.2rem;
  color: var(--muted);
  background: var(--white);
  border: 1px dashed var(--line);
}

.subsection-title {
  margin-top: 2rem !important;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.35rem !important;
}

.detail-heading {
  max-width: 820px;
  margin: 1.8rem 0 0.5rem;
  color: var(--navy-900);
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.subsection-block {
  max-width: 820px;
  padding-top: 0.25rem;
  margin-top: 2.5rem;
  border-top: 1px solid var(--line);
}

.information-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  max-width: 820px;
  margin-top: 1.5rem;
}

.information-grid article {
  min-height: 150px;
  padding: 1.2rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-top: 3px solid var(--blue-600);
}

.information-grid article > span {
  display: block;
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 0.69rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.information-grid article > strong {
  color: var(--navy-900);
}

.information-grid h3 {
  margin-bottom: 0.5rem;
}

.information-grid p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.card-status-link {
  display: inline-block;
  margin-top: 0.8rem;
  font-size: 0.8rem;
}

.award-copy strong {
  color: var(--navy-900);
}

.information-grid-compact article {
  min-height: 100px;
}

.contact-grid {
  margin-top: 1rem;
}

.contact-grid article {
  min-height: 110px;
}

.contact-grid .text-link {
  overflow-wrap: anywhere;
}

.proceedings-box {
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr);
  gap: 1.5rem;
  max-width: 820px;
  padding: 1.3rem;
  margin-top: 2.2rem;
  color: var(--white);
  background: var(--navy-900);
}

.proceedings-box span {
  color: var(--orange);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.proceedings-box h3,
.proceedings-box p {
  margin: 0;
  color: inherit;
}

.proceedings-box h3 {
  margin-top: 0.2rem;
  color: var(--white);
}

.proceedings-box p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.9rem;
}

.muted-link[aria-disabled="true"] {
  color: var(--muted);
  text-decoration: none;
  pointer-events: none;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
  margin-top: 1.8rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.72rem 1.1rem;
  color: var(--white);
  background: var(--navy-900);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.button:hover,
.button:focus-visible {
  background: var(--blue-600);
}

.button-disabled {
  color: #73808a;
  background: #dfe4e7;
  pointer-events: none;
}

.text-link {
  color: var(--blue-600);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.organization-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  max-width: 800px;
}

.organization-grid article {
  padding: 1.2rem;
  background: var(--white);
  border: 1px solid var(--line);
}

.organization-grid .organization-wide {
  grid-column: 1 / -1;
}

.organization-grid p {
  margin: 0.35rem 0 0;
  color: var(--muted);
}

.person-list {
  padding: 0;
  margin: 0.8rem 0 0;
  list-style: none;
}

.person-list li + li {
  padding-top: 0.75rem;
  margin-top: 0.75rem;
  border-top: 1px solid var(--line);
}

.person-list strong,
.person-list span {
  display: block;
}

.person-list strong {
  color: var(--navy-900);
}

.person-list span {
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.committee-member-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.committee-member-list li,
.committee-member-list li + li {
  padding: 0.8rem;
  margin: 0;
  background: var(--paper);
  border: 1px solid var(--line);
}

.venue-details {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 800px;
  margin: 1.8rem 0 0;
  border: 1px solid var(--line);
}

.venue-details div {
  padding: 1rem;
  background: var(--white);
  border-right: 1px solid var(--line);
}

.venue-details div:last-child {
  border-right: 0;
}

.venue-details dt,
.venue-details dd {
  margin: 0;
}

.venue-details dt {
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.venue-details dd {
  color: var(--navy-900);
  font-weight: 700;
}

.venue-link {
  color: var(--blue-600);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.side-column {
  position: sticky;
  top: 104px;
}

.side-card {
  padding: 1.25rem;
  margin-bottom: 1rem;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: 0 7px 26px rgba(4, 28, 49, 0.06);
}

.side-card h2 {
  padding-bottom: 0.7rem;
  margin: 0 0 0.9rem;
  color: var(--navy-900);
  font-size: 1rem;
  border-bottom: 2px solid var(--orange);
}

.side-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.side-card .reviewed-on {
  padding-top: 0.9rem;
  margin-top: 0.9rem;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
}

.side-card-accent {
  border-top: 4px solid var(--blue-600);
}

.side-card-accent .text-link {
  display: inline-block;
  margin-top: 0.8rem;
  font-size: 0.85rem;
}

.side-card [aria-disabled="true"] {
  color: var(--muted);
  text-decoration: none;
  pointer-events: none;
}

.summary-list {
  margin: 0;
}

.summary-list div {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0;
  border-bottom: 1px solid var(--line);
}

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

.summary-list dt,
.summary-list dd {
  margin: 0;
  font-size: 0.84rem;
}

.summary-list dt {
  color: var(--muted);
}

.summary-list dd {
  color: var(--navy-900);
  font-weight: 700;
  text-align: right;
}

.link-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

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

.link-list a {
  display: block;
  padding: 0.6rem 0;
  color: var(--blue-600);
  font-size: 0.86rem;
  font-weight: 700;
}

.site-footer {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2.3rem max(1.5rem, calc((100% - var(--max-width)) / 2));
  color: rgba(255, 255, 255, 0.72);
  background: var(--navy-950);
  font-size: 0.8rem;
}

.site-footer strong,
.site-footer span {
  display: block;
}

.site-footer strong {
  color: var(--white);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.3rem;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

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

@media (max-width: 960px) {
  .header-inner {
    width: min(100% - 2rem, var(--max-width));
  }

  .menu-button {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 74px;
    right: 0;
    left: 0;
    display: none;
    padding: 0.7rem 1rem 1.1rem;
    background: rgba(4, 28, 49, 0.98);
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

  .site-nav.is-open {
    display: grid;
  }

  .site-nav a {
    padding: 0.55rem 0;
  }

  .page-shell {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .side-column {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
  }

  .side-card {
    margin: 0;
  }

  .side-card-accent {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  html {
    scroll-padding-top: 72px;
  }

  .header-inner {
    min-height: 66px;
  }

  .brand {
    font-size: 1.4rem;
  }

  .site-nav {
    top: 66px;
  }

  .hero {
    min-height: 560px;
  }

  .hero-image {
    background-position: 44% center, center;
  }

  .hero-content {
    width: calc(100% - 2rem);
    padding: 8.5rem 0 5.2rem;
  }

  .hero h1 {
    gap: 0.12em;
    font-size: clamp(3.2rem, 19vw, 5.4rem);
    line-height: 0.88;
  }

  .hero-full-name {
    max-width: 22rem;
    font-size: 1.35rem;
  }

  .hero-facts {
    display: grid;
    gap: 0.35rem;
  }

  .hero-facts span + span::before {
    content: none;
  }

  .photo-credit {
    right: 1rem;
    left: 1rem;
    text-align: right;
  }

  .page-shell {
    width: calc(100% - 2rem);
    padding: 3.2rem 0 4rem;
  }

  .content-section {
    padding-bottom: 3.2rem;
    margin-bottom: 3.2rem;
  }

  .topic-list,
  .organization-grid,
  .information-grid,
  .side-column {
    grid-template-columns: 1fr;
  }

  .organization-grid .organization-wide {
    grid-column: auto;
  }

  .committee-member-list {
    grid-template-columns: 1fr;
  }

  .proceedings-box {
    grid-template-columns: 1fr;
  }

  .side-card-accent {
    grid-column: auto;
  }

  .venue-details {
    grid-template-columns: 1fr;
  }

  .venue-details div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .venue-details div:last-child {
    border-bottom: 0;
  }

  th,
  td {
    min-width: 150px;
    padding: 0.75rem;
  }

  .site-footer {
    display: grid;
    gap: 1.4rem;
  }

  .footer-links {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.45rem;
  }
}

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

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