:root {
  --navy-950: #061b35;
  --navy-900: #0a2d57;
  --navy-800: #123f73;
  --navy-700: #1f568c;
  --blue-100: #eaf1f8;
  --blue-50: #f5f8fc;
  --gold-600: #765214;
  --gold-500: #bd8d32;
  --gold-300: #dfc17d;
  --gold-100: #f7ecd4;
  --ink: #172236;
  --muted: #5d6877;
  --line: #dfe6ee;
  --white: #fff;
  --surface: #fff;
  --surface-soft: #f7f9fc;
  --success: #226b54;
  --shadow-sm: 0 8px 24px rgba(6, 27, 53, 0.07);
  --shadow-md: 0 18px 48px rgba(6, 27, 53, 0.1);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --container: 1180px;
  --section-space: clamp(4rem, 7vw, 6rem);
  --card-pad: clamp(1.25rem, 2.4vw, 1.75rem);
  --card-gap: clamp(1rem, 2vw, 1.5rem);
  --transition: 180ms ease;
  --header-height: 78px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 94px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

body.nav-open {
  overflow: hidden;
}

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

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

a {
  color: var(--navy-800);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--gold-600);
}

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

h1,
h2,
h3 {
  color: var(--navy-950);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.14;
}

h1 {
  margin-bottom: 1.25rem;
  font-size: clamp(2.7rem, 5.4vw, 5rem);
  letter-spacing: -0.035em;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(1.8rem, 3vw, 2.65rem);
  letter-spacing: -0.025em;
}

h3 {
  margin-bottom: 0.55rem;
  font-size: clamp(1.12rem, 1.5vw, 1.35rem);
}

p:last-child,
ul:last-child,
ol:last-child {
  margin-bottom: 0;
}

:focus-visible {
  outline: 3px solid var(--gold-300);
  outline-offset: 3px;
}

.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;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 0.7rem 1rem;
  color: var(--white);
  background: var(--navy-950);
  border-radius: var(--radius-sm);
  transform: translateY(-160%);
}

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

.container {
  width: min(var(--container), calc(100% - 3rem));
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: var(--section-space);
}

.section-soft {
  background: var(--surface-soft);
}

.section-compact {
  padding-block: clamp(2.75rem, 5vw, 4rem);
}

.section-with-ornament {
  overflow: hidden;
}

.section-ornament {
  position: absolute;
  z-index: 0;
  width: min(31vw, 420px);
  opacity: 0.12;
  pointer-events: none;
}

.ornament-network {
  top: -4rem;
  right: -5rem;
}

.ornament-orchid {
  right: -3rem;
  bottom: -8rem;
}

.section-with-ornament > .container {
  position: relative;
  z-index: 1;
}

.section-heading,
.section-header {
  max-width: 760px;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.section-heading .section-title,
.section-header h2 {
  margin-bottom: 0;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.8rem;
  color: var(--gold-600);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-kicker-icon {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.section-title {
  margin: 0;
}

.section-subtitle,
.lead,
.about-copy {
  max-width: 72ch;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.25vw, 1.15rem);
}

.section-action,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.section-action {
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.72rem 1.15rem;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.83rem;
  font-weight: 800;
  letter-spacing: 0.045em;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  text-transform: uppercase;
  transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition);
}

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

.btn-primary {
  color: var(--white);
  background: var(--navy-900);
  box-shadow: 0 10px 24px rgba(6, 27, 53, 0.16);
}

.btn-primary:hover {
  color: var(--white);
  background: var(--navy-700);
}

.btn-secondary {
  color: var(--navy-950);
  background: var(--gold-300);
}

.btn-secondary:hover {
  color: var(--navy-950);
  background: #e8ce91;
}

.btn-outline {
  color: var(--navy-900);
  background: var(--white);
  border-color: #b9c9da;
}

.btn-outline:hover {
  color: var(--navy-950);
  border-color: var(--gold-500);
}

.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.62;
  transform: none;
}

.eyebrow,
.gold-pill-label {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  padding: 0.38rem 0.7rem;
  color: var(--gold-600);
  background: var(--gold-100);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  line-height: 1.2;
  text-transform: uppercase;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(10, 45, 87, 0.1);
  backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  min-height: 78px;
  gap: 1.5rem;
}

.logo-link {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  width: 116px;
  text-decoration: none;
}

.logo-img--header {
  width: 116px;
  height: auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.15rem;
  margin-left: auto;
}

.nav-link {
  position: relative;
  padding: 0.7rem 0.57rem;
  color: var(--navy-900);
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 720;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--gold-600);
  background: var(--blue-50);
}

.nav-link.is-active::after {
  content: "";
  position: absolute;
  right: 0.57rem;
  bottom: 0.28rem;
  left: 0.57rem;
  height: 2px;
  background: var(--gold-500);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  margin-left: auto;
  padding: 10px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  margin: 5px 0;
  background: var(--navy-900);
  transition: transform var(--transition), opacity var(--transition);
}

/* Homepage hero */
.home-hero {
  position: relative;
  min-height: clamp(570px, 64vw, 690px);
  overflow: hidden;
  background: #f7faff url("../assets/optimized/hero-bg.jpg") 76% bottom / cover no-repeat;
}

.home-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.93) 45%, rgba(255, 255, 255, 0.16) 80%);
  pointer-events: none;
}

.home-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  align-items: center;
  min-height: inherit;
  padding-block: clamp(3.75rem, 7vw, 6rem);
}

.home-hero__content {
  max-width: 710px;
}

.home-hero__logo {
  width: min(680px, 100%);
  height: auto;
  margin-bottom: 1.35rem;
  filter: drop-shadow(0 10px 20px rgba(6, 27, 53, 0.08));
}

.home-hero__edition {
  max-width: 660px;
  margin-bottom: 1.25rem;
  color: var(--navy-800);
  font-family: "Avenir Next", Avenir, Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: clamp(1.2rem, 2vw, 1.65rem);
  font-weight: 650;
  letter-spacing: -0.018em;
  line-height: 1.35;
  text-wrap: balance;
}

.home-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.2rem;
  margin: 1.4rem 0 0;
  padding: 0;
  color: var(--navy-900);
  font-weight: 720;
  list-style: none;
}

.home-hero__meta li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.home-hero__meta li::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--gold-500);
  border-radius: 50%;
}

.home-hero__note {
  max-width: 58ch;
  margin-top: 1.25rem;
  color: var(--muted);
}

.home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.75rem;
}

.home-intro__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  align-items: start;
  gap: clamp(2rem, 6vw, 6rem);
}

.home-intro__grid h2 {
  max-width: 18ch;
  margin-bottom: 0;
}

.home-intro__copy {
  padding-top: 0.35rem;
}

.home-intro__copy p {
  color: var(--muted);
  font-size: clamp(1.02rem, 1.3vw, 1.16rem);
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--navy-900);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.045em;
  text-decoration: none;
  text-transform: uppercase;
}

.text-link span {
  transition: transform var(--transition);
}

.text-link:hover span {
  transform: translateX(4px);
}

.section-heading--split {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(280px, 0.55fr);
  justify-content: space-between;
  align-items: end;
  gap: 2rem;
  max-width: none;
}

.section-heading--split h2,
.section-heading--split .eyebrow {
  margin-bottom: 0;
}

.section-heading--split .eyebrow {
  margin-bottom: 0.8rem;
}

.section-heading--split > p {
  margin-bottom: 0.25rem;
  color: var(--muted);
}

.home-facts {
  position: relative;
  z-index: 2;
  margin-top: -2rem;
}

.home-facts__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.home-fact {
  padding: 1.35rem 1.55rem;
}

.home-fact + .home-fact {
  border-left: 1px solid var(--line);
}

.home-fact span {
  display: block;
  margin-bottom: 0.3rem;
  color: var(--gold-600);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.home-fact strong {
  color: var(--navy-950);
  font-size: 1.05rem;
}

/* Page hero */
.page-hero {
  position: relative;
  min-height: 292px;
  overflow: hidden;
  padding-block: clamp(3.7rem, 7vw, 5.5rem);
  background: linear-gradient(115deg, #f8fafc 0%, #edf3fa 60%, #fbf4e5 100%);
  border-bottom: 1px solid var(--line);
}

.page-hero::after {
  content: "";
  position: absolute;
  right: -4rem;
  bottom: -6rem;
  width: min(39vw, 520px);
  aspect-ratio: 1;
  background: url("../assets/optimized/molecular-network.jpg") center / contain no-repeat;
  opacity: 0.12;
}

.page-hero .container {
  position: relative;
  z-index: 1;
}

.page-hero h1 {
  max-width: 900px;
  margin-bottom: 1rem;
}

.page-hero p {
  max-width: 68ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.6vw, 1.24rem);
}

.page-hero-wordmark,
.page-hero-logo-mark {
  display: none;
}

.jump-nav {
  position: sticky;
  top: var(--header-height);
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.jump-nav__inner {
  display: flex;
  gap: 0.55rem;
  padding-block: 0.72rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.jump-nav a {
  flex: 0 0 auto;
  padding: 0.48rem 0.72rem;
  color: var(--navy-800);
  background: var(--blue-50);
  border: 1px solid rgba(19, 62, 108, 0.1);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 750;
  text-decoration: none;
}

.jump-nav a:hover {
  color: var(--navy-950);
  background: var(--gold-100);
  border-color: rgba(197, 143, 25, 0.28);
}

.jump-nav ~ section[id] {
  scroll-margin-top: 146px;
}

/* Shared cards and grids */
.grid {
  display: grid;
  gap: var(--card-gap);
}

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

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card,
.info-card,
.feature-card,
.date-card,
.route-card,
.sponsor-tier,
.notice,
.sponsor-contact-panel,
.venue-panel,
.travel-card,
.home-visitor-panel {
  padding: var(--card-pad);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.card p,
.info-card p,
.feature-card p,
.date-card p,
.route-card p,
.sponsor-tier p,
.venue-panel p,
.travel-card p,
.home-visitor-panel p {
  color: var(--muted);
}

.info-card,
.feature-card,
.date-card {
  min-height: 100%;
}

.feature-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--card-gap);
}

.feature-icon,
.date-card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1rem;
  object-fit: contain;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: start;
  gap: clamp(2rem, 5vw, 4rem);
}

.dates-timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--card-gap);
}

.date-card-label {
  margin-bottom: 0.45rem;
  color: var(--gold-600);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.date-card-date {
  color: var(--navy-950);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.35rem;
  font-weight: 700;
}

.date-card-desc {
  margin-top: 0.45rem;
  color: var(--muted);
}

.date-card.is-confirmed {
  background: var(--navy-900);
  border-color: var(--navy-900);
}

.date-card.is-confirmed .date-card-label,
.date-card.is-confirmed .date-card-date,
.date-card.is-confirmed .date-card-desc {
  color: var(--white);
}

.topic-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.topic-list li {
  position: relative;
  padding: 1rem 1rem 1rem 2.4rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.topic-list li::before {
  content: "";
  position: absolute;
  top: 1.5rem;
  left: 1rem;
  width: 7px;
  height: 7px;
  background: var(--gold-500);
  border-radius: 50%;
}

.notice {
  max-width: 900px;
  margin-inline: auto;
  background: linear-gradient(135deg, var(--white), var(--blue-50));
  border-left: 5px solid var(--gold-500);
}

.contact-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--card-gap);
}

/* Speakers */
.featured-speaker-grid,
.plenary-grid,
.keynote-grid {
  display: grid;
  gap: clamp(1.15rem, 2.3vw, 1.8rem);
}

.featured-speaker-grid,
.plenary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.keynote-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.speaker-directory .speaker-card {
  min-width: 0;
  padding: clamp(1.15rem, 2vw, 1.6rem);
  text-align: center;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(19, 62, 108, 0.13);
  border-radius: 22px;
  box-shadow: 0 12px 34px rgba(6, 27, 53, 0.055);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.speaker-directory .speaker-card:hover {
  border-color: rgba(197, 143, 25, 0.34);
  box-shadow: 0 18px 42px rgba(6, 27, 53, 0.1);
  transform: translateY(-3px);
}

.speaker-directory .speaker-card__content {
  display: flex;
  align-items: center;
  flex-direction: column;
  padding-top: 1.05rem;
}

.speaker-directory .speaker-card h3 {
  margin-bottom: 0;
  font-size: clamp(1.1rem, 1.45vw, 1.32rem);
  line-height: 1.22;
}

.speaker-card__divider {
  width: 34px;
  height: 2px;
  margin: 0.78rem 0 0.72rem;
  background: var(--gold-500);
  border-radius: 999px;
}

.speaker-directory .speaker-card__affiliation {
  display: grid;
  min-height: 2.9em;
  margin: 0 0 0.74rem;
  place-items: center;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.speaker-directory .speaker-card__talk {
  min-height: 2.8em;
  margin: 0;
  color: #667487;
  font-size: 0.82rem;
  line-height: 1.4;
}

.speaker-directory .speaker-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1;
  background: var(--blue-50);
  border: 4px solid rgba(197, 143, 25, 0.2);
  border-radius: 50%;
  box-shadow: 0 9px 25px rgba(6, 27, 53, 0.09);
}

.speaker-card__portrait {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: translate(var(--portrait-shift-x, 0), var(--portrait-shift-y, 0)) scale(var(--portrait-scale, 1));
  transform-origin: var(--portrait-origin, 50% 50%);
  transition: transform 420ms ease;
}

.speaker-directory .speaker-card:hover .speaker-card__portrait {
  transform: translate(var(--portrait-shift-x, 0), var(--portrait-shift-y, 0)) scale(calc(var(--portrait-scale, 1) + 0.025));
}

.speaker-directory .plenary-grid .speaker-media {
  width: min(238px, 86%);
  margin-inline: auto;
}

.speaker-directory .plenary-grid .speaker-card__portrait {
  object-fit: cover;
  object-position: center;
}

.speaker-directory .keynote-grid {
  gap: clamp(1rem, 2vw, 1.55rem);
  --portrait-scale: 1.04;
}

.speaker-directory [data-speaker="jun-li"],
.speaker-directory [data-speaker="tatsuya-tsukuda"],
.speaker-directory [data-speaker="amitava-patra"],
.speaker-directory [data-speaker="biswarup-pathak"],
.speaker-directory [data-speaker="quan-ming-wang"],
.speaker-directory [data-speaker="yan-zhu"],
.speaker-directory [data-speaker="yong-pei"],
.speaker-directory [data-speaker="xavier-le-guevel"],
.speaker-directory [data-speaker="xiaodong-zhang"],
.speaker-directory [data-speaker="sarah-s-park"],
.speaker-directory [data-speaker="seiji-yamazoe"],
.speaker-directory [data-speaker="shuang-quan-zang"],
.speaker-directory [data-speaker="stacy-copp"] {
  --portrait-origin: 50% 50%;
  --portrait-scale: 1;
  --portrait-shift-x: 0;
  --portrait-shift-y: 0;
}

.speaker-directory [data-speaker="jun-li"] .speaker-card__portrait,
.speaker-directory [data-speaker="tatsuya-tsukuda"] .speaker-card__portrait,
.speaker-directory [data-speaker="amitava-patra"] .speaker-card__portrait,
.speaker-directory [data-speaker="biswarup-pathak"] .speaker-card__portrait,
.speaker-directory [data-speaker="quan-ming-wang"] .speaker-card__portrait,
.speaker-directory [data-speaker="yan-zhu"] .speaker-card__portrait,
.speaker-directory [data-speaker="yong-pei"] .speaker-card__portrait,
.speaker-directory [data-speaker="xavier-le-guevel"] .speaker-card__portrait,
.speaker-directory [data-speaker="xiaodong-zhang"] .speaker-card__portrait,
.speaker-directory [data-speaker="sarah-s-park"] .speaker-card__portrait,
.speaker-directory [data-speaker="seiji-yamazoe"] .speaker-card__portrait,
.speaker-directory [data-speaker="shuang-quan-zang"] .speaker-card__portrait,
.speaker-directory [data-speaker="stacy-copp"] .speaker-card__portrait {
  object-position: center;
}

.speaker-directory [data-speaker="jun-li"] {
  --portrait-scale: 1.45;
}

.speaker-directory [data-speaker="tatsuya-tsukuda"] {
  --portrait-scale: 1.32;
}

.speaker-directory [data-speaker="quan-ming-wang"],
.speaker-directory [data-speaker="xiaodong-zhang"],
.speaker-directory [data-speaker="sarah-s-park"] {
  --portrait-scale: 1.12;
}

.speaker-directory [data-speaker="yan-zhu"] {
  --portrait-scale: 1.14;
}

.speaker-directory [data-speaker="yong-pei"] {
  --portrait-scale: 1.18;
}

.speaker-directory [data-speaker="shuang-quan-zang"] {
  --portrait-scale: 1.08;
}

.speaker-directory [data-speaker="stacy-copp"] {
  --portrait-scale: 1.06;
}

.speaker-directory [data-speaker="chen-wei-liu"] {
  --portrait-scale: 1;
}

.speaker-directory [data-speaker="chen-wei-liu"] .speaker-card__portrait {
  object-position: 50% 34%;
}

.speaker-directory [data-speaker="chih-ching-huang"] {
  --portrait-origin: 50% 34%;
  --portrait-scale: 1.3;
  --portrait-shift-y: 10%;
}

.speaker-directory [data-speaker="dongil-lee"] {
  --portrait-scale: 1;
}

.speaker-directory [data-speaker="dongil-lee"] .speaker-card__portrait {
  object-position: 50% 44%;
}

.speaker-directory [data-speaker="jie-zheng"] {
  --portrait-scale: 1;
}

.speaker-directory [data-speaker="jie-zheng"] .speaker-card__portrait {
  object-position: center;
}

.speaker-directory [data-speaker="masaaki-mitsui"] {
  --portrait-scale: 1;
}

.speaker-directory [data-speaker="masaaki-mitsui"] .speaker-card__portrait {
  object-position: 50% 15%;
}

.speaker-directory [data-speaker="sukhendu-mandal"] {
  --portrait-origin: 50% 25%;
  --portrait-scale: 3.4;
  --portrait-shift-y: 12%;
}

.speaker-directory [data-speaker="xue-bai"] {
  --portrait-origin: 55% 30%;
  --portrait-scale: 1.68;
  --portrait-shift-y: 12%;
}

.speaker-directory [data-speaker="yu-han"] {
  --portrait-origin: 50% 32%;
  --portrait-scale: 1.32;
  --portrait-shift-y: 7%;
}

.speaker-directory [data-speaker="saptarshi-mukherjee"] {
  --portrait-origin: 50% 32%;
  --portrait-scale: 1.22;
  --portrait-shift-y: 4%;
}

.speaker-directory .keynote-grid .speaker-media {
  width: min(160px, 82%);
  margin-inline: auto;
}

.speaker-directory .keynote-grid .speaker-card__content {
  padding-top: 0.85rem;
}

.speaker-directory .keynote-grid .speaker-card h3 {
  font-size: 1.08rem;
}

.speaker-directory .keynote-grid .speaker-card__affiliation {
  min-height: 3.9em;
  font-size: 0.8rem;
}

.speaker-directory .keynote-grid .speaker-card__talk {
  min-height: 3.9em;
  font-size: 0.76rem;
}

.tag {
  display: inline-flex;
  margin: 0 0 0.72rem;
  padding: 0.32rem 0.58rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.tag--plenary {
  color: var(--navy-950);
  background: var(--gold-100);
}

.tag--keynote {
  color: var(--navy-800);
  background: var(--blue-100);
}

.speaker-divider {
  height: 1px;
  margin-block: clamp(3.25rem, 7vw, 5.25rem);
  background: var(--line);
}

.speaker-group + .speaker-group {
  margin-top: clamp(4rem, 8vw, 7rem);
  padding-top: clamp(3.5rem, 7vw, 5.5rem);
  border-top: 1px solid var(--line);
}

.speaker-group {
  scroll-margin-top: 110px;
}

.speaker-group__heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
}

.speaker-group__heading h2,
.speaker-group__heading h3,
.speaker-group__heading p {
  margin-bottom: 0;
}

.speaker-group__heading h3 {
  font-size: clamp(1.55rem, 2.5vw, 2.2rem);
}

.speaker-group__heading .eyebrow {
  margin-bottom: 0.7rem;
}

.speaker-group__heading > span {
  flex: 0 0 auto;
  padding-bottom: 0.25rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.speaker-directory [aria-busy="true"] {
  min-height: 220px;
}

.speaker-load-note,
.render-note {
  grid-column: 1 / -1;
  padding: 1rem;
  color: var(--muted);
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.participation-strip {
  background: var(--white);
}

.participation-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: clamp(2rem, 6vw, 5rem);
}

.participation-strip__inner > div:first-child {
  max-width: 700px;
}

.participation-strip__inner h2 {
  margin-bottom: 0.7rem;
}

.participation-strip__inner p:last-child {
  color: var(--muted);
}

.participation-strip__actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* Venue and homepage modules */
.venue-spotlight,
.hotel-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.venue-spotlight__content,
.hotel-feature__content {
  padding: clamp(1.75rem, 4vw, 3.25rem);
}

.venue-spotlight__visual,
.hotel-feature__visual {
  min-height: 360px;
  overflow: hidden;
  background: var(--blue-50);
}

.venue-spotlight__visual {
  display: grid;
  place-items: center;
  padding: 3rem;
  background: linear-gradient(135deg, var(--navy-900), var(--navy-700));
}

.venue-spotlight__visual--photo {
  position: relative;
  display: block;
  margin: 0;
  padding: 0;
  background: var(--blue-50);
}

.venue-spotlight__visual--photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.venue-spotlight__visual--photo figcaption {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  left: 1rem;
  padding: 0.68rem 0.8rem;
  color: var(--white);
  background: rgba(6, 27, 53, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 10px;
  backdrop-filter: blur(8px);
  font-size: 0.76rem;
  font-weight: 650;
}

.venue-monogram {
  color: var(--white);
  text-align: center;
}

.venue-monogram strong {
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(4rem, 10vw, 7.5rem);
  letter-spacing: -0.05em;
  line-height: 0.9;
}

.venue-monogram span {
  display: block;
  max-width: 26ch;
  margin: 1.2rem auto 0;
  color: #dbe7f4;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hotel-feature__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.fact-list {
  display: grid;
  gap: 0;
  margin: 1.5rem 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.fact-list li,
.venue-fact {
  display: grid;
  grid-template-columns: minmax(110px, 0.35fr) minmax(0, 0.65fr);
  gap: 1rem;
  padding-block: 0.8rem;
  border-bottom: 1px solid var(--line);
}

.fact-list span,
.venue-fact-label {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 700;
}

.fact-list strong,
.venue-fact-value {
  color: var(--navy-950);
}

.home-visitor-duo {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--card-gap);
}

.home-visitor-panel {
  display: flex;
  flex-direction: column;
}

.home-visitor-panel .eyebrow {
  margin-bottom: 0.9rem;
}

.link-list {
  display: grid;
  gap: 0.65rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.link-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--line);
  font-weight: 700;
  text-decoration: none;
}

.link-list a::after {
  content: "→";
  color: var(--gold-600);
}

.sponsor-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: clamp(1.75rem, 4vw, 3rem);
  background: var(--navy-900);
  border-radius: var(--radius-lg);
}

.sponsor-callout h2,
.sponsor-callout p {
  color: var(--white);
}

.sponsor-callout p {
  max-width: 68ch;
  margin-bottom: 0;
  color: #d7e2ef;
}

/* Timeline */
.meeting-timeline {
  display: grid;
  grid-template-columns: repeat(9, minmax(95px, 1fr));
  overflow-x: auto;
  padding: 0.4rem 0 1rem;
}

.meeting-item {
  position: relative;
  min-width: 95px;
  padding: 1.5rem 0.8rem 0;
  text-align: center;
  border-top: 2px solid var(--line);
}

.meeting-item::before {
  content: "";
  position: absolute;
  top: -6px;
  left: calc(50% - 5px);
  width: 10px;
  height: 10px;
  background: var(--gold-500);
  border-radius: 50%;
}

.meeting-item strong,
.meeting-item span {
  display: block;
}

.meeting-item span {
  color: var(--muted);
  font-size: 0.86rem;
}

/* Travel */
.travel-overview {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: var(--card-gap);
  align-items: stretch;
}

.quick-route {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.55rem;
  margin: 1.4rem 0 0;
}

.quick-route span {
  padding: 0.45rem 0.7rem;
  color: var(--navy-900);
  background: var(--blue-100);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 750;
}

.quick-route span + span::before {
  content: "→";
  margin-right: 0.55rem;
  color: var(--gold-600);
}

.map-panel {
  min-height: 360px;
  overflow: hidden;
  background: var(--blue-50);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
}

.map-panel iframe {
  width: 100%;
  height: 100%;
  min-height: 360px;
  border: 0;
}

.route-grid,
.hotel-grid,
.experience-grid,
.source-grid {
  display: grid;
  gap: var(--card-gap);
}

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

.hotel-grid,
.experience-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.source-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.route-card ul,
.travel-card ul {
  margin-bottom: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.route-card li + li,
.travel-card li + li {
  margin-top: 0.45rem;
}

.travel-card {
  overflow: hidden;
  padding: 0;
}

.travel-card__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--blue-50);
}

.travel-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.travel-card__body {
  padding: var(--card-pad);
}

.hotel-feature {
  margin-bottom: var(--card-gap);
  border: 2px solid var(--gold-300);
}

.source-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 90px;
  padding: 1.1rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-weight: 720;
  text-decoration: none;
}

.source-card::after {
  content: "↗";
  color: var(--gold-600);
}

/* Sponsors */
.sponsor-page-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--card-gap);
}

.sponsor-tier > span {
  display: inline-flex;
  margin-bottom: 1rem;
  color: var(--gold-600);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.sponsor-contact-panel {
  max-width: 900px;
  margin-inline: auto;
  text-align: center;
}

/* Media */
.media {
  overflow: hidden;
  background: var(--blue-50);
  border-radius: var(--radius-md);
}

.media img {
  width: 100%;
  height: 100%;
}

.media-cover img {
  object-fit: cover;
}

.media-1x1 {
  aspect-ratio: 1;
}

.media-4x3 {
  aspect-ratio: 4 / 3;
}

.media-round {
  border-radius: 14px;
}

/* Footer */
.site-footer {
  position: relative;
  overflow: hidden;
  padding-top: 4rem;
  color: #cbd7e4;
  background: var(--navy-950);
}

.site-footer::after {
  content: "";
  position: absolute;
  right: -6rem;
  bottom: -8rem;
  width: 430px;
  aspect-ratio: 1;
  background: url("../assets/ornaments/orchid-line-art.png") center / contain no-repeat;
  opacity: 0.07;
  pointer-events: none;
}

.footer-main {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(210px, 1.2fr) 0.7fr 0.8fr 1.2fr;
  gap: clamp(1.5rem, 4vw, 3.25rem);
  padding-bottom: 3rem;
}

.footer-logo-panel {
  display: inline-flex;
  width: min(260px, 100%);
}

.footer-logo-image {
  width: 100%;
  height: auto;
}

.footer-brand-text {
  display: none;
}

.site-footer h3 {
  margin-bottom: 0.8rem;
  color: var(--white);
  font-family: Inter, ui-sans-serif, sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer p {
  margin-bottom: 0.55rem;
  color: #b9c7d7;
  font-size: 0.9rem;
  line-height: 1.55;
}

.footer-organizer strong {
  color: var(--white);
  font-size: 0.96rem;
}

.footer-role {
  color: var(--gold-300);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer .footer-contact {
  margin-top: 0.9rem;
}

.site-footer ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer li + li {
  margin-top: 0.38rem;
}

.site-footer a {
  color: #e1eaf4;
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--gold-300);
}

.footer-bottom {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.13);
  color: #9fb0c4;
  font-size: 0.8rem;
}

@media (max-width: 1100px) {
  .header-inner {
    min-height: 70px;
  }

  .menu-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: 70px;
    right: 0;
    left: 0;
    display: grid;
    align-content: start;
    justify-content: stretch;
    gap: 0;
    max-height: calc(100vh - 70px);
    margin-left: 0;
    padding: 1rem 1.5rem 1.5rem;
    overflow-y: auto;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity var(--transition), transform var(--transition);
  }

  .nav.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .nav-link {
    width: 100%;
    padding: 0.9rem 0.75rem;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    font-size: 0.95rem;
  }

  .nav-link.is-active::after {
    display: none;
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

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

  .menu-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .keynote-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (max-width: 820px) {
  .container {
    width: min(var(--container), calc(100% - 2rem));
  }

  .home-hero {
    min-height: 650px;
    background-position: 74% bottom;
  }

  .home-hero::after {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.9) 56%, rgba(255, 255, 255, 0.32) 100%);
  }

  .home-hero__inner {
    align-items: start;
  }

  .home-hero__content {
    max-width: 620px;
  }

  .home-intro__grid,
  .section-heading--split {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .participation-strip__inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .home-facts__grid,
  .about-grid,
  .feature-row,
  .dates-timeline,
  .featured-speaker-grid,
  .plenary-grid,
  .venue-spotlight,
  .hotel-feature,
  .home-visitor-duo,
  .travel-overview,
  .hotel-grid,
  .experience-grid,
  .sponsor-page-grid,
  .footer-main {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-facts__grid {
    overflow: visible;
  }

  .home-fact:nth-child(3) {
    grid-column: 1 / -1;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .about-grid,
  .venue-spotlight,
  .hotel-feature,
  .travel-overview {
    grid-template-columns: 1fr;
  }

  .keynote-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .venue-spotlight__visual,
  .hotel-feature__visual {
    min-height: 300px;
  }

  .sponsor-callout {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  :root {
    --section-space: 3.75rem;
    --card-pad: 1.2rem;
  }

  body {
    font-size: 0.98rem;
  }

  .container {
    width: min(var(--container), calc(100% - 1.5rem));
  }

  .logo-link,
  .logo-img--header {
    width: 98px;
  }

  .home-hero {
    min-height: 620px;
  }

  .home-hero__inner {
    padding-top: 3.5rem;
  }

  .home-hero__logo {
    width: 100%;
    margin-bottom: 1.15rem;
  }

  .home-hero__meta {
    display: grid;
    gap: 0.45rem;
  }

  .home-hero__actions .btn {
    width: 100%;
  }

  .home-facts {
    margin-top: -1rem;
  }

  .home-facts__grid,
  .feature-row,
  .dates-timeline,
  .featured-speaker-grid,
  .plenary-grid,
  .grid-2,
  .grid-3,
  .grid-4,
  .home-visitor-duo,
  .route-grid,
  .hotel-grid,
  .experience-grid,
  .source-grid,
  .sponsor-page-grid,
  .contact-layout,
  .footer-main {
    grid-template-columns: 1fr;
  }

  .speaker-directory .keynote-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.8rem;
  }

  .speaker-directory .speaker-card {
    padding: 1rem 0.72rem;
    border-radius: 17px;
  }

  .speaker-directory .keynote-grid .speaker-media {
    width: min(132px, 92%);
  }

  .speaker-directory .keynote-grid .speaker-card__affiliation,
  .speaker-directory .keynote-grid .speaker-card__talk {
    min-height: 5.2em;
    font-size: 0.75rem;
  }

  .speaker-group__heading {
    align-items: flex-start;
  }

  .participation-strip__actions,
  .participation-strip__actions .btn {
    width: 100%;
  }

  .home-fact:nth-child(3) {
    grid-column: auto;
  }

  .home-fact + .home-fact,
  .home-fact:nth-child(3) {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

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

  .section-heading {
    align-items: flex-start;
  }

  .section-kicker-icon {
    width: 30px;
    height: 30px;
  }

  .fact-list li,
  .venue-fact {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .quick-route {
    align-items: flex-start;
    flex-direction: column;
  }

  .quick-route span + span::before {
    content: "↓";
  }

  .venue-spotlight__visual,
  .hotel-feature__visual,
  .map-panel,
  .map-panel iframe {
    min-height: 260px;
  }

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

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

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

}