:root {
  --ink: #15171a;
  --muted: #5d6670;
  --line: #d9dee3;
  --paper: #fbfaf7;
  --white: #ffffff;
  --safety: #f36c21;
  --safety-dark: #b7440d;
  --teal: #008b8b;
  --green: #2f7d59;
  --steel: #33424d;
  --shadow: 0 18px 50px rgba(21, 23, 26, 0.14);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.6;
}

body.nav-open {
  overflow: hidden;
}

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

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

.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: sticky;
  inset: 0 0 auto;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 76px;
  padding: 14px clamp(18px, 4vw, 52px);
  background: rgba(251, 250, 247, 0.96);
  color: var(--ink);
  box-shadow: 0 1px 0 rgba(21, 23, 26, 0.08);
  backdrop-filter: blur(14px);
  transition:
    background 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  background: rgba(251, 250, 247, 0.96);
  color: var(--ink);
  box-shadow: 0 1px 0 rgba(21, 23, 26, 0.08);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 2px solid currentColor;
  background: var(--white);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-text {
  display: grid;
  line-height: 1.15;
}

.brand-text span {
  font-size: 0.78rem;
  text-transform: uppercase;
  color: currentColor;
  opacity: 0.72;
}

.brand-text strong {
  font-size: clamp(0.9rem, 2vw, 1rem);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
  font-size: 0.95rem;
  font-weight: 700;
}

.site-nav a {
  position: relative;
  padding-block: 8px;
  color: currentColor;
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 2px;
  left: 0;
  height: 2px;
  background: var(--safety);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 160ms ease;
}

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

.site-nav .nav-cta {
  min-width: 94px;
  padding: 10px 16px;
  border: 1px solid currentColor;
  text-align: center;
}

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

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid currentColor;
  background: transparent;
  color: currentColor;
  cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: clamp(54px, 8vw, 92px) clamp(18px, 4vw, 28px) 36px;
  background: var(--paper);
  color: var(--ink);
}

.hero-image {
  width: min(1040px, 100%);
  aspect-ratio: 16 / 9;
  margin-top: 42px;
  border-radius: 18px;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.hero-content {
  width: min(960px, 100%);
  text-align: center;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--safety);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  margin-bottom: 18px;
  font-size: clamp(0.96rem, 1.6vw, 1.18rem);
}

.hero h1 {
  margin: 0 auto;
  max-width: 980px;
  font-size: clamp(2.45rem, 5vw, 4.7rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 820px;
  margin: 20px auto 0;
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  line-height: 1.42;
  color: var(--muted);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(16px, 3vw, 34px);
  align-items: center;
  justify-content: center;
  margin-top: 24px;
}

.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  font-weight: 900;
}

.hero-meta-item svg {
  width: 1.25em;
  height: 1.25em;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.2;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 850;
  text-align: center;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.16);
  transition:
    transform 150ms ease,
    box-shadow 150ms ease,
    background 150ms ease,
    color 150ms ease,
    border-color 150ms ease;
}

.button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.2);
}

.button.primary {
  background: var(--safety);
  color: var(--white);
}

.button.primary:hover {
  background: var(--safety-dark);
}

.button.secondary {
  border-color: var(--line);
  background: var(--white);
  color: var(--ink);
}

.button.secondary:hover {
  background: #f0f2f3;
}

.button-arrow {
  font-size: 1.08em;
  line-height: 1;
  transition: transform 150ms ease;
}

.button:hover .button-arrow {
  transform: translateX(3px);
}

.quick-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: var(--max);
  margin: 20px auto 0;
  padding-inline: clamp(18px, 4vw, 28px);
  position: relative;
  z-index: 2;
}

.quick-facts div {
  min-height: 108px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.quick-facts span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.quick-facts strong {
  display: block;
  margin-top: 8px;
  font-size: clamp(1rem, 2vw, 1.25rem);
  line-height: 1.25;
}

.section {
  max-width: var(--max);
  margin-inline: auto;
  padding: clamp(70px, 9vw, 112px) clamp(18px, 4vw, 28px);
}

.split {
  display: grid;
  grid-template-columns: 0.86fr 1.14fr;
  gap: clamp(32px, 6vw, 78px);
  align-items: start;
}

.about-section {
  padding-top: clamp(58px, 7vw, 86px);
}

.about-heading {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(0, 1.15fr);
  gap: clamp(28px, 6vw, 72px);
  align-items: start;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line);
}

.about-heading h2 {
  max-width: 620px;
}

.about-lead {
  margin: 0;
  color: var(--steel);
  font-size: clamp(1.12rem, 2vw, 1.42rem);
  line-height: 1.48;
}

.about-body {
  columns: 2 360px;
  column-gap: clamp(34px, 6vw, 70px);
  padding-top: 28px;
}

.about-body p {
  break-inside: avoid;
  margin: 0 0 18px;
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.1rem);
}

.section h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.45rem);
  line-height: 1;
  letter-spacing: 0;
}

.section h3 {
  margin: 0;
  line-height: 1.2;
}

.section-copy p,
.wide-text p,
.poster-copy p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.13rem);
}

.section-copy p + p {
  margin-top: 18px;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.section-intro {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.12rem);
}

.layer-band,
.poster-band {
  max-width: none;
  background: var(--steel);
  color: var(--white);
}

.layer-band > *,
.poster-band > * {
  max-width: var(--max);
  margin-inline: auto;
}

.layer-band .eyebrow,
.poster-band .eyebrow {
  color: #ffb17f;
}

.layer-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, 0.18);
}

.layer-grid article {
  min-height: 248px;
  padding: 26px;
  background: var(--steel);
}

.layer-grid span {
  display: inline-block;
  margin-bottom: 42px;
  color: #ffb17f;
  font-weight: 900;
}

.layer-grid h3 {
  font-size: 1.25rem;
}

.layer-grid p {
  margin: 14px 0 0;
  color: rgba(255, 255, 255, 0.76);
}

.program-section {
  max-width: none;
  padding-top: 30px;
  background:
    linear-gradient(180deg, rgba(19, 31, 39, 0.98), rgba(13, 21, 27, 0.98));
  color: var(--white);
}

.program-section > .section-heading,
.program-section > .timeline {
  max-width: var(--max);
  margin-inline: auto;
}

.program-section .section-heading {
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.program-section h2,
.program-section h3 {
  color: var(--white);
}

.speakers-section {
  padding-top: 36px;
}

.speakers-section .section-heading {
  margin-bottom: 28px;
}

.speakers-section h2 {
  color: var(--ink);
}

.speaker-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.speaker-card {
  display: grid;
  grid-template-columns: 120px minmax(300px, 0.9fr) minmax(300px, 1.1fr);
  gap: 4px 22px;
  align-items: start;
  min-height: 0;
  padding: 18px 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
  box-shadow: 0 10px 28px rgba(21, 23, 26, 0.06);
}

.speaker-avatar {
  grid-row: 1 / span 4;
  width: 104px;
  height: 104px;
  margin: 0;
  border: 1px solid rgba(21, 23, 26, 0.1);
  border-radius: 50%;
  background: #eef3f4;
  object-fit: cover;
  object-position: center;
}

.speaker-avatar-zhao {
  object-position: center 28%;
}

.speaker-avatar-ning {
  object-position: center 30%;
}

.speaker-avatar-fallback {
  display: grid;
  place-items: center;
  color: var(--steel);
  font-size: 1.7rem;
  font-weight: 900;
}

.speaker-index {
  grid-column: 2;
  display: inline-flex;
  width: fit-content;
  margin-bottom: 0;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(243, 108, 33, 0.1);
  color: var(--safety-dark);
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.speaker-card h3 {
  grid-column: 2 / -1;
  margin-top: 2px;
  color: var(--ink);
  font-size: clamp(1.25rem, 2vw, 1.55rem);
}

.speaker-card h3 a {
  color: inherit;
  text-decoration: none;
}

.speaker-card h3 a:hover {
  color: var(--safety-dark);
}

.speaker-card p {
  grid-column: 2 / -1;
  margin: 2px 0 0;
  color: var(--muted);
  line-height: 1.35;
}

.speaker-card .speaker-affiliation {
  color: var(--steel);
  font-weight: 850;
}

.speaker-title-toggle {
  grid-column: 2 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  margin-top: 8px;
  padding: 12px 16px;
  border: 1px solid rgba(243, 108, 33, 0.2);
  border-radius: 12px;
  background: rgba(243, 108, 33, 0.07);
  color: var(--steel);
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition:
    border-color 180ms ease,
    background 180ms ease,
    transform 180ms ease;
}

.speaker-title-toggle:hover,
.speaker-title-toggle[aria-expanded="true"] {
  border-color: rgba(243, 108, 33, 0.42);
  background: rgba(243, 108, 33, 0.12);
  transform: translateY(-1px);
}

.speaker-title-toggle strong {
  display: block;
  color: var(--safety-dark);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.speaker-title-toggle em {
  display: block;
  margin-top: 2px;
  color: var(--steel);
  font-style: normal;
  font-weight: 850;
}

.speaker-title-arrow {
  display: grid;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  place-items: center;
  border-radius: 50%;
  background: var(--white);
  color: var(--safety-dark);
  font-weight: 900;
  transition: transform 180ms ease;
}

.speaker-title-toggle[aria-expanded="true"] .speaker-title-arrow {
  transform: rotate(180deg);
}

.speaker-detail {
  grid-column: 2 / -1;
  margin-top: 0;
  padding: 16px 18px;
  border-left: 3px solid var(--safety);
  border-radius: 12px;
  background: #f7f8f8;
  color: var(--muted);
}

.speaker-detail h4 {
  margin: 0;
  color: var(--ink);
  font-size: 1rem;
}

.speaker-detail p {
  grid-column: auto;
  margin: 8px 0 0;
}

.diversity-note {
  margin-top: 24px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f7f8f8;
}

.diversity-note h3 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.2rem, 2vw, 1.55rem);
}

.diversity-note ul {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 28px;
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 10px;
  border-top: 0;
}

.timeline article {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 22px;
  align-items: center;
  padding: 16px 18px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.035);
}

.timeline time {
  color: #ff9a5a;
  font-weight: 900;
  text-transform: uppercase;
}

.timeline h3 {
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
}

.timeline p {
  margin: 8px 0 0;
  color: var(--muted);
}

.call-for-papers {
  max-width: none;
  padding-block: clamp(58px, 8vw, 86px);
  background:
    linear-gradient(180deg, rgba(19, 31, 39, 0.98), rgba(13, 21, 27, 0.98));
  color: var(--white);
}

.cfp-panel {
  max-width: var(--max);
  margin-inline: auto;
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.035);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.18);
}

.cfp-panel h2 {
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--safety);
  font-size: clamp(2rem, 3.6vw, 3rem);
}

.cfp-block {
  margin-top: 28px;
}

.cfp-block h3 {
  margin-bottom: 16px;
  color: var(--white);
  font-size: clamp(1.35rem, 2vw, 1.7rem);
}

.cfp-block p {
  margin: 0 0 18px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.05rem;
}

.cfp-topic-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(34px, 8vw, 96px);
  row-gap: 8px;
  margin: 0;
  padding-left: 24px;
  color: rgba(255, 255, 255, 0.96);
  font-size: clamp(1rem, 1.5vw, 1.18rem);
}

.cfp-topic-list li::marker,
.guidelines-list li::marker {
  color: rgba(255, 255, 255, 0.78);
}

.deadline-table {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.025);
}

.deadline-row {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(220px, 1fr) minmax(210px, 0.95fr);
  gap: 22px;
  align-items: center;
  min-height: 68px;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.deadline-row:last-child {
  border-bottom: 0;
}

.deadline-row strong {
  color: #ff9a5a;
  font-size: 1.05rem;
}

.deadline-row time {
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 750;
}

.countdown {
  color: #b8ced8;
  font-size: 1.02rem;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.countdown.is-due {
  color: #ffb17f;
}

.date-note {
  margin-top: 16px !important;
  color: #b8ced8 !important;
  font-style: italic;
}

.guidelines-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding-left: 24px;
  color: rgba(255, 255, 255, 0.95);
  font-size: clamp(1rem, 1.5vw, 1.12rem);
}

.guidelines-list strong {
  color: var(--white);
}

.cfp-submit {
  margin-top: 26px;
}

.poster-band {
  display: grid;
  grid-template-columns: 1fr minmax(300px, 420px);
  gap: clamp(28px, 6vw, 72px);
  align-items: center;
}

.poster-copy {
  margin: 0;
}

.poster-copy h2 {
  max-width: 720px;
}

.poster-copy p {
  max-width: 780px;
  margin-top: 22px;
  color: rgba(255, 255, 255, 0.78);
}

.submission-panel {
  padding: 28px;
  background: var(--white);
  color: var(--ink);
}

.submission-panel dl {
  display: grid;
  gap: 18px;
  margin: 0 0 24px;
}

.submission-panel div {
  display: grid;
  gap: 4px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.submission-panel dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.submission-panel dd {
  margin: 0;
  font-weight: 850;
}

.wide-text {
  max-width: 900px;
}

.organizers-section {
  max-width: none;
  padding-block: clamp(58px, 8vw, 86px);
  background: var(--paper);
  color: var(--ink);
}

.organizers-panel {
  max-width: var(--max);
  margin-inline: auto;
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.organizers-section .section-heading {
  max-width: none;
  margin-bottom: 30px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.organizers-section h2 {
  color: var(--ink);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
}

.organizer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.organizer-card {
  display: flex;
  min-height: 300px;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  padding: 24px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #f7f8f8;
  text-align: center;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease;
}

.organizer-card:hover,
.organizer-card:focus-visible {
  border-color: rgba(243, 108, 33, 0.48);
  background: var(--white);
  transform: translateY(-2px);
  outline: none;
}

.organizer-avatar {
  width: 138px;
  height: 138px;
  flex: 0 0 138px;
  margin-bottom: 26px;
  border: 1px solid rgba(21, 23, 26, 0.1);
  border-radius: 50%;
  background: #e8eef0;
  object-fit: cover;
  object-position: center;
  box-shadow: 0 10px 24px rgba(21, 23, 26, 0.12);
}

.organizer-avatar.avatar-contain {
  padding: 5px;
  background: #ffffff;
  object-fit: contain;
}

.organizer-avatar.avatar-xiangyu {
  object-position: center center;
}

.organizer-card h3 {
  margin: auto 0 12px;
  color: var(--ink);
  font-size: clamp(1.24rem, 2vw, 1.55rem);
  line-height: 1.2;
}

.organizer-card p {
  margin: 0;
  color: var(--steel);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  line-height: 1.35;
}

.organizer-card .organizer-role {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.96rem;
  font-weight: 800;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px clamp(18px, 4vw, 52px);
  background: var(--ink);
  color: var(--white);
}

.site-footer p {
  margin: 6px 0 0;
  color: rgba(255, 255, 255, 0.66);
}

.site-footer a {
  color: #ffb17f;
  font-weight: 850;
}

@media (max-width: 980px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    top: 76px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 16px 22px 28px;
    background: rgba(251, 250, 247, 0.98);
    color: var(--ink);
    box-shadow: 0 18px 32px rgba(21, 23, 26, 0.12);
  }

  .site-header.is-open .site-nav {
    display: flex;
  }

  .site-nav a {
    padding: 14px 0;
    border-bottom: 1px solid var(--line);
  }

  .site-nav .nav-cta {
    margin-top: 16px;
    border: 1px solid var(--ink);
  }

  .quick-facts,
  .split,
  .about-heading,
  .poster-band {
    grid-template-columns: 1fr;
  }

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

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

  .deadline-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}

@media (max-width: 640px) {
  .brand-text strong {
    max-width: 180px;
  }

  .hero {
    padding: 42px 18px 30px;
  }

  .hero h1 {
    max-width: 100%;
    font-size: clamp(2.1rem, 11vw, 3.2rem);
  }

  .hero-copy {
    font-size: 1.14rem;
  }

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

  .hero-image {
    margin-top: 28px;
    border-radius: 12px;
  }

  .quick-facts {
    margin-top: 0;
    padding-inline: 0;
  }

  .quick-facts div {
    box-shadow: none;
  }

  .layer-grid,
  .timeline article,
  .speaker-grid,
  .organizer-grid,
  .diversity-note ul {
    grid-template-columns: 1fr;
  }

  .speaker-card {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .speaker-avatar {
    grid-row: auto;
    width: 92px;
    height: 92px;
  }

  .speaker-index,
  .speaker-card h3,
  .speaker-card p,
  .speaker-title-toggle,
  .speaker-detail {
    grid-column: 1;
  }

  .layer-grid article {
    min-height: 196px;
  }

  .layer-grid span {
    margin-bottom: 24px;
  }

  .timeline article {
    gap: 6px;
  }

  .poster-band {
    padding-inline: 18px;
  }

  .cfp-panel {
    padding: 22px 18px;
    border-right: 0;
    border-left: 0;
  }

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

  .about-body {
    columns: 1;
  }

  .deadline-row {
    padding: 16px;
  }

  .countdown {
    white-space: normal;
  }

  .site-footer {
    display: grid;
  }
}