/* "How we know this.": the story's sources under a cobalt rule, numbered in italic serif, each
 * with the claims it supports behind a disclosure. */

.sources-panel {
  margin-top: var(--space-9);
  padding: var(--space-6) 0 0;
  border-top: 4px solid var(--editorial-field);
}
.sources-panel h2 {
  margin: 0 0 var(--space-2);
  font: 500 2.5rem/1.1 var(--font-display);
  letter-spacing: -0.01em;
}
.sources-panel .period { color: var(--blue); }
.sources-note {
  max-width: 48ch;
  margin: var(--space-3) 0 var(--space-5);
  font: var(--text-ui-sm);
  color: var(--ink-2);
}

.sources-list { margin: 0; padding: 0; list-style: none; counter-reset: source; }
.sources-list > li {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  counter-increment: source;
}
.sources-list > li::before {
  content: counter(source) ".";
  padding-top: 0.12rem;
  font: italic 500 1.75rem/1 var(--font-display);
  color: var(--blue-deep);
}
.sources-list > li + li {
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid var(--line);
}

.source-entry { min-width: 0; overflow-wrap: anywhere; }
.source-citation { margin: 0; font: 600 1.05rem/1.45 var(--font-sans); color: var(--ink-1); }
.source-citation a {
  color: var(--ink-1);
  text-decoration: underline;
  text-decoration-color: var(--blue);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}
.source-citation a:hover { color: var(--blue-deep); text-decoration-color: var(--blue-deep); }
.source-citation a::after {
  content: "";
  display: inline-block;
  width: 1em;
  height: 1em;
  margin-left: 0.4em;
  vertical-align: -0.13em;
  background: currentColor;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8 5H4v15h15v-4M13 4h7v7M20 4 10 14'/%3E%3C/svg%3E") center / contain no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23000' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M8 5H4v15h15v-4M13 4h7v7M20 4 10 14'/%3E%3C/svg%3E") center / contain no-repeat;
}
.source-meta { margin: var(--space-1) 0 0; font: var(--text-caption); color: var(--ink-2); }

.source-evidence > summary,
.source-excerpt > summary {
  cursor: pointer;
  padding: 0.5rem 0;
  font: var(--text-caption);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.source-evidence summary:focus-visible { outline: 2px solid currentColor; outline-offset: 4px; }
.source-claims {
  margin: var(--space-2) 0 0;
  padding: var(--space-4);
  list-style: none;
  background: var(--paper-2);
  border-left: 2px solid var(--blue);
}
.source-claims li + li { margin-top: var(--space-3); }
.source-claim { margin: 0; font: var(--text-ui-sm); color: var(--ink-1); }
.source-excerpt blockquote {
  margin: 0.5rem 0 1rem;
  padding: 0.4rem 1rem;
  border-left: 2px solid currentColor;
  white-space: pre-wrap;
  font: var(--text-caption);
  overflow-wrap: anywhere;
}

@media (max-width: 736px) {
  .sources-panel { padding: var(--space-5) 0 0; }
  .sources-list > li { grid-template-columns: 2.25rem minmax(0, 1fr); }
}