/* OpenAI-inspired minimal clean design */
body {
  font-family: 'Helvetica Neue', sans-serif;
  background: #ffffff;
  color: #111;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

main {
  margin: 0 auto;
  padding: 40px 20px;
  box-sizing: border-box;
  text-align: left;
}

header {
  width: 900px;
  margin: 0 auto 60px auto;
  text-align: center;
}

h1 {
  font-size: 2.5em;
  font-weight: 600;
  margin: 0;
}

.subtitle {
  font-size: 1.4em;
  color: #666;
  margin: 0.2em 0;
}

.authors,
.date {
  color: #888;
  font-size: 0.9em;
  margin: 0.1em 0;
}

h2 {
  font-size: 1.5em;
  margin-top: 2em;
  font-weight: 600;
  text-align: center;
}

h3 {
  font-size: 1.15em;
  font-weight: 500;
  margin-top: 1.5em;
  margin-bottom: 0.7em;
  color: #222;
  text-align: left;
}

p {
  line-height: 1.7;
  margin: 1em 0;
  text-align: left;
}

ul {
  margin-left: 1.5em;
  line-height: 1.6;
  text-align: left;
}

pre {
  background-color: #f9f9f9;
  padding: 1em;
  overflow-x: auto;
  font-family: monospace;
  font-size: 0.95em;
  border-radius: 4px;
}

figure {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 2em auto;
  max-width: 800px;
}

figcaption {
  color: #888;
  font-size: 0.95em;
  text-align: center;
  margin-top: 0.5em;
  max-width: 80%;
}

.fig-row {
  display: flex;
  gap: 2em;
  justify-content: center;
  align-items: flex-start; /* Align figures at the top for horizontal alignment */
  width: 80%;             /* About 80% of main text width */
  margin: 2em auto;       /* Center the fig row horizontally */
}

.fig-row figure {
  align-items: center;
  display: flex;
  flex-direction: column;
}

.fig-row img {
  width: 100%;
  height: auto;
  display: block;
}

img {
  display: block;
  margin-left: auto;
  margin-right: auto;
  max-width: 100%;
  height: auto;
}

table {
  font-size: 0.75em;
  border-collapse: collapse;
  width: 700px; /* Match main content width */
  margin: 1.5em auto; /* Center the table horizontally */
  padding: 0;
  box-sizing: border-box;
  align-items: center;
}

th,
td {
  border: 1px solid #ddd;
  padding: 0.4em 0.6em;
  text-align: left;
}

th {
  background: #f5f5f5;
  font-weight: 600;
}

.footnote {
  font-size: 0.95em;
  color: #666;
  margin-top: 2em;
  text-align: left;
}




.author-list {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 1rem;
  color: #444;
  align-content: center;
  justify-content: center;
  text-align: center;
  align-items: flex-end;
}
.author-list span {
  white-space: nowrap;
  text-align: center;
  display: flex;
  align-items: flex-end;
}
.author-list sup {
  align-self: flex-start; /* Move superscript to the top of the span */
  font-size: 0.7em;
  line-height: 1;
  margin-left: 2px;
}
.correspondence {
  font-size: 0.9rem;
  color: #555;
  margin-top: 10px;
  margin-bottom: 40px;
}




.content {
  width: 700px;
  margin: 0 auto;
  text-align: left;
}
.table-wrapper {
  max-width: 700px;
  margin: 0 auto;
  overflow-x: auto;
}

.table-wrapper table {
  width: 100%;
}

.affiliations {
  margin-top: 10px;
  margin-bottom: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  font-size: 0.98rem;
  color: #555;
  justify-content: center;
  text-align: center;
  align-items: flex-end;
}
.affiliations span {
  white-space: nowrap;
  text-align: center;
  display: flex;
  align-items: flex-end;
}
.affiliations sup {
  align-self: flex-start;
  font-size: 0.7em;
  line-height: 1;
  margin-left: 2px;
}