@charset "UTF-8";
:root { --blue: #1976d2; --blue-hover: #1565b8; --header: #338ee0; --ink: #293440; --muted: #627386; --line: #cce3f7; --soft: #f3f8fd; }
* { box-sizing: border-box; }
body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font: 18px/1.75 system-ui, "Microsoft JhengHei", sans-serif;
}
a { color: var(--blue); text-underline-offset: 3px; }
a:hover { color: var(--blue-hover); text-decoration-thickness: 2px; }
a:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; }
.site-header { background: var(--header); color: #fff; border-bottom: 1px solid var(--header); }
.site-header a:hover { color: #fff; }
.site-header a:focus-visible { outline-color: #fff; }
.site-bar {
  max-width: 840px;
  margin: 0 auto;
  padding: 18px 40px;
  font-size: 16px;
  line-height: 1.6;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.school-brand { color: inherit; display: flex; align-items: center; gap: 12px; text-decoration: none; }
.school-brand img { display: block; width: 48px; height: auto; object-fit: contain; }
.school-brand strong { display: block; font-size: 22px; line-height: 1.4; }
.site-name { display: block; margin-top: 2px; font-size: 14px; }
.back-link { margin-top: 32px; font-size: 14px; text-decoration: none; }
.back-link:hover { text-decoration: underline; }
.back-link, .source-details a { display: inline-flex; align-items: center; gap: 6px; }
.icon { display: block; flex-shrink: 0; }
main { max-width: 840px; margin: 0 auto; padding: 32px 40px 48px; overflow-wrap: anywhere; }
.article-heading { margin-bottom: 28px; }
h1 { margin: 0 0 12px; font-size: 30px; line-height: 1.45; font-weight: 600; }
.article-meta,
.source-details { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 20px; font-size: 16px; }
.article-meta { color: var(--muted); }
.article-meta a { color: var(--blue-hover); text-decoration: none; }
.article-meta a:hover { text-decoration: underline; }
.article-content p { margin-top: 0; margin-bottom: 1em; }
.article-content :is(h1, h2, h3, h4) { line-height: 1.5; margin-top: 1.5em; margin-bottom: 0.6em; }
.article-content :is(h1, h2) { font-size: 26px; }
.article-content h3 { font-size: 22px; }
.article-content :is(ul, ol) { padding-left: 1.6em; }
.article-content figure { margin: 28px 0; }
.article-content img { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.article-content img[role="button"] { cursor: zoom-in; }
.article-content img[role="button"]:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; }
.article-content figcaption { margin-top: 10px; text-align: center; color: var(--muted); font-size: 14px; }
.table-wrapper { margin: 28px 0; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 16px; text-align: left; }
th, td { border: 1px solid var(--line); padding: 8px 12px; }
th { background: var(--soft); color: var(--ink); }
.source-note { margin-top: 40px; padding-top: 20px; border-top: 1px solid var(--line); }
.source-note h2 { margin: 0 0 8px; font-size: 15px; font-weight: 600; }
.site-footer { padding: 22px 40px; border-top: 1px solid var(--line); text-align: center; color: var(--muted); font-size: 13px; }

@media (max-width:600px) {
  body { font-size: 17px; }
  .site-bar { padding: 14px 16px; gap: 12px; flex-wrap: wrap; }
  .school-brand { gap: 10px; }
  .school-brand img { width: 46px; }
  .school-brand strong { font-size: 20px; }
  .back-link { min-height: 44px; }
  main { padding: 24px 16px 36px; }
  h1 { font-size: 26px; }
  .article-heading { margin-bottom: 24px; }
  .article-meta, .source-details { gap: 6px 14px; font-size: 15px; }
  .article-content :is(h1, h2) { font-size: 23px; }
  .article-content h3 { font-size: 20px; }
  .article-content figure { margin: 24px 0; }
  .article-content figcaption { font-size: 13px; }
  .article-content table { display: block; max-width: 100%; overflow-x: auto; font-size: 14px; }
  .source-note { margin-top: 28px; }
  .source-details a { min-height: 44px; }
  .site-footer { padding: 20px 16px; }
}