:root {
  --ink: #202124;
  --muted: #5f6368;
  --line: #d8dadd;
  --wash: #f7f8f8;
  --accent: #2f6f73;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  font-size: 14px;
  line-height: 1.45;
}

.page {
  width: min(1040px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.25rem 0 2rem;
}

.hero {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.kicker,
.meta,
.quick-links,
.subtitle,
td:first-child,
footer {
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.kicker {
  margin: 0 0 0.25rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 850px;
  margin: 0 auto 0.45rem;
  font-size: clamp(2rem, 5.5vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.015em;
}

h2 {
  margin: 0 0 0.55rem;
  font-size: 1.22rem;
  line-height: 1.2;
}

h3 {
  margin: 0.7rem 0 0.25rem;
  font-size: 1rem;
  line-height: 1.25;
}

p {
  margin-bottom: 0.55rem;
}

ul {
  margin-top: 0;
}

/* The wordmark: the A is the Eiffel Tower, so the I beside it reads AI. */
.wordmark {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin: 0 auto 0.3rem;
  font-size: clamp(2.85rem, 8.4vw, 6.2rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.02em;
}

.wordmark .tower {
  display: block;
  width: 0.71em;
  height: 0.7em;          /* cap height of the letters that follow */
  margin-right: 0.008em;
}

.wordmark .tower img {
  display: block;
  width: 100%;
  height: 100%;
}

.wordmark .lower {
  font-style: italic;
}

.expansion {
  margin-bottom: 0.3rem;
  font-size: clamp(1.15rem, 2.4vw, 1.6rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.tagline {
  margin-bottom: 0.35rem;
  color: var(--muted);
  font-size: 1.1rem;
}

.subtitle {
  margin-bottom: 0.45rem;
  font-size: 0.84rem;
  font-weight: 700;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem;
  margin: 0.7rem 0 1rem;
  font-size: 0.78rem;
}

.meta span {
  padding: 0.18rem 0.45rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--wash);
}

.quick-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
  margin: -0.25rem 0 0.95rem;
  font-size: 0.78rem;
}

.quick-links a {
  color: var(--accent);
  text-decoration: none;
}

.quick-links a:hover {
  text-decoration: underline;
}

.abstract-block {
  padding: 0.9rem 0 0.8rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.abstract-block h2 {
  text-align: center;
}

.abstract-block p {
  margin-bottom: 0.7rem;
}

.abstract-block p:last-child {
  margin-bottom: 0;
}

.people-block {
  max-width: 900px;
  margin: 0.75rem auto 0.95rem;
}

.people-group + .people-group {
  margin-top: 0.85rem;
}

.people-group h2 {
  margin-bottom: 0.45rem;
  font-size: 0.9rem;
  text-align: center;
}

.people-strip {
  display: grid;
  gap: 0.65rem;
}

.people-strip.invited {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.people-strip.invited figure {
  width: 130px;
}

.people-strip.advisors {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 900px;
  margin: 0 auto;
}

.people-strip.advisors figure {
  width: 130px;
}

.people-strip.panelists {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 900px;
  margin: 0 auto;
}

.people-strip.panelists figure {
  width: 130px;
}

.people-strip.organizers {
  grid-template-columns: repeat(7, minmax(0, 1fr));
  max-width: 980px;
  margin: 0 auto;
}

.people-strip figure {
  margin: 0;
}

.people-strip img {
  display: block;
  width: 100%;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line);
  border-radius: 8px;
  object-fit: cover;
  background: var(--wash);
  filter: saturate(0.96);
}

.avatar-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--wash);
  color: var(--accent);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
}

.people-strip figcaption {
  margin-top: 0.34rem;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.72rem;
  line-height: 1.18;
  text-align: center;
}

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

.people-strip strong {
  color: var(--ink);
  font-weight: 650;
}

.people-strip small {
  margin-bottom: 0.12rem;
  color: var(--accent);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.tba {
  margin: 0.1rem 0 0;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.85rem;
  text-align: center;
}

.people-note {
  margin: 0 0 0.7rem;
  color: var(--muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.78rem;
  text-align: center;
}

.date-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem 1.25rem;
  margin: 0.4rem 0 0.55rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--line);
}

.date-grid > div {
  display: flex;
  flex-direction: column;
  gap: 0.14rem;
}

.date-label {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
}

.date-value {
  font-size: 1rem;
  color: var(--ink);
}

.date-sub {
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.72rem;
  color: var(--muted);
}

.cfp-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 0.9rem;
  text-align: center;
}

.cfp-lead {
  margin: 0 0 0.35rem;
}

.cfp-submit-link {
  margin: 0 0 1rem;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
}

.cfp-link-sep {
  margin: 0 0.5rem;
  color: var(--muted);
}

.cfp-formatting {
  margin-top: 1.1rem;
}

.button {
  display: inline-block;
  padding: 0.5rem 1.05rem;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
}

.button:hover {
  background: #26595c;
}

.button-secondary {
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
}

.button-secondary:hover {
  background: var(--wash);
}

.details-format-heading {
  margin-top: 1.1rem;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
}

/* Submission flow: the required step stands alone; the optional pilot
   (steps two and three) sits above the routes and shares its top edge. */
.flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  grid-template-areas:
    "one two three"
    ".   paths paths";
  gap: 0 0.9rem;
}

.step {
  min-width: 0;
  padding: 0.85rem 1rem 0.95rem;
  border: 1px solid var(--line);
}

.step-one {
  grid-area: one;
}

.step-two {
  grid-area: two;
}

.step-three {
  grid-area: three;
}

.step-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--accent);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.step strong {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 1.02rem;
  line-height: 1.3;
}

.step p {
  margin-bottom: 0;
  color: var(--muted);
}

.step-action {
  margin: 0.75rem 0 0;
}

.benefits {
  display: flex;
  flex-wrap: wrap;
  gap: 0 1.1rem;
  margin: 0.4rem 0 0;
  padding: 0;
  color: var(--muted);
  list-style: none;
}

.benefits li + li {
  position: relative;
}

.benefits li + li::before {
  position: absolute;
  left: -0.65rem;
  content: "\00b7";
}

.paths {
  display: grid;
  grid-area: paths;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: -1px;
  padding: 1rem;
  border: 1px solid var(--line);
}

.path {
  min-width: 0;
}

.path h3 {
  margin: 0 0 0.3rem;
}

.path p {
  color: var(--muted);
}

.path > :last-child {
  margin-bottom: 0;
}

.agent-prompt {
  display: flex;
  align-items: stretch;
  width: 100%;
  min-width: 0;
  max-width: 100%;
  margin-top: 0.5rem;
  border: 1px solid var(--line);
}

.agent-prompt pre {
  flex: 1;
  min-width: 0;
  margin: 0;
  padding: 0.5rem 0.55rem;
  font: 0.72rem/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre;
  overflow-x: auto;
  scrollbar-width: thin;
}

.copy-agent {
  flex: none;
  padding: 0 0.6rem;
  border: 0;
  border-left: 1px solid var(--line);
  background: none;
  color: var(--accent);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
}

.copy-agent:hover {
  text-decoration: underline;
}

.dates-note {
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 0.85rem;
}

a {
  color: var(--accent);
}

.section {
  padding: 1rem 0;
  border-top: 1px solid var(--line);
}

.organizer-section {
  padding-bottom: 0.4rem;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.spacer {
  visibility: hidden;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

td {
  padding: 0.38rem 0;
  border-top: 1px solid var(--line);
  vertical-align: top;
}

td:first-child {
  width: 4.4rem;
  padding-right: 0.75rem;
  white-space: nowrap;
}

.dates-table {
  margin-bottom: 0.55rem;
}

.dates-table td:first-child {
  width: 12.5rem;
  color: var(--ink);
  font-family: inherit;
  white-space: normal;
}

.key-list {
  margin: 0.1rem 0 0;
  padding-left: 1.1rem;
}

.key-list li {
  margin-bottom: 0.3rem;
}

.program-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.2rem 1.25rem;
  margin-top: 0.8rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
}

footer {
  width: min(1040px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1rem 0 1.6rem;
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  text-align: center;
}

footer p {
  margin: 0 0 0.3rem;
}

footer p:last-child {
  margin-bottom: 0;
}

.footer-links a + a {
  margin-left: 0.9rem;
}

@media (max-width: 780px) {
  .two-col,
  .program-grid {
    grid-template-columns: 1fr;
  }

  .flow {
    grid-template-columns: 1fr;
    grid-template-areas:
      "one"
      "two"
      "paths"
      "three";
    row-gap: 0.9rem;
  }

  .step-one {
    margin-bottom: 0.9rem;
  }

  .paths {
    grid-template-columns: 1fr;
    margin-bottom: 0.9rem;
  }

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

  .people-strip.invited,
  .people-strip.panelists,
  .people-strip.organizers,
  .people-strip.advisors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .spacer {
    display: none;
  }

  body {
    font-size: 13.5px;
  }
}