:root {
  color-scheme: light;
  --blue: #1265bd;
  --blue-dark: #084c91;
  --text: #25313c;
  --muted: #566472;
  --panel: #f3f5f7;
  --line: #d5dfe8;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: #fff;
  font: 1.075rem/1.85 system-ui, -apple-system, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  overflow-wrap: anywhere;
}
a { color: var(--blue-dark); text-underline-offset: .2em; }
a:hover { color: #06376b; }
a:focus-visible { outline: 3px solid #a24800; outline-offset: 4px; border-radius: 2px; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, h4 { line-height: 1.4; text-wrap: balance; }
h1 { font-size: clamp(1.65rem, 3vw, 2.2rem); margin: 0 0 .5rem; }
h2 { font-size: 1.4rem; margin: 2.1rem 0 .85rem; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1.2rem; }
ul, ol { padding-inline-start: 1.6rem; }
li { padding-inline-start: .15rem; margin-block: .35rem; }
figure { margin: 2rem 0; }
address { font-style: normal; }
.shell { width: min(84%, 1320px); margin-inline: auto; }
.skip-link {
  position: fixed; top: -100px; left: 1rem; z-index: 10;
  color: #fff; background: var(--blue-dark); padding: .5rem 1rem;
}
.skip-link:focus { top: .5rem; }
.masthead {
  padding: 1.7rem 6%;
  background: #eff6fc url("header.png") center / cover no-repeat;
}
.lab-name {
  display: block; margin-bottom: .6rem; color: #344656; text-decoration: none;
  font: bold clamp(1.8rem, 4vw, 2.55rem)/1.3 Georgia, "Times New Roman", serif;
}
.university { display: flex; align-items: center; gap: .8rem; width: fit-content; color: #344656; text-decoration: none; font-size: .95rem; line-height: 1.5; }
.ntu-logo { width: 44px; height: 44px; object-fit: contain; }
.primary-nav { display: flex; flex-wrap: wrap; gap: .25rem; margin: 0; padding: .4rem 5%; list-style: none; background: var(--blue); }
.primary-nav li { margin: 0; padding: 0; }
.primary-nav a { display: block; padding: .5rem 1rem; color: #fff; text-decoration: none; border-radius: 3px; font-size: 1.15rem; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { background: var(--blue-dark); }
.primary-nav a:focus-visible { outline-color: #fff; outline-offset: -3px; }
.index-container { min-height: 65vh; padding: 2.6rem 6% 4rem; background: var(--panel); }
.page-heading { margin-bottom: 2rem; padding-bottom: 1.1rem; border-bottom: 1px solid var(--line); }
.home-heading p { color: var(--muted); margin: 0; }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: .55rem; padding: 0; margin: .55rem 0 0; list-style: none; font-size: .88rem; color: var(--muted); }
.breadcrumbs li { margin: 0; padding: 0; }
.breadcrumbs li + li::before { content: "/"; display: inline-block; margin-inline-end: .55rem; color: #73808b; }
.home-columns, .contact-layout { display: grid; grid-template-columns: 1.15fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); }
.home-columns h2, .contact-layout h2 { margin-top: 0; }
.prose { white-space: pre-line; }
.plan-list { margin: 0 0 1.5rem; }
.button-link { display: inline-block; padding: .4rem .95rem; border: 1px solid var(--blue); border-radius: 4px; color: var(--blue-dark); background: #fff; text-decoration: none; }
.button-link:hover { background: #e6f0fa; }
.research-cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.4rem; margin-top: 2rem; }
.research-card { display: flex; flex-direction: column; align-items: center; gap: 1rem; padding: 1.2rem .5rem; text-align: center; text-decoration: none; }
.research-card:hover { text-decoration: underline; }
.research-icon { width: min(100%, 164px); aspect-ratio: 1; display: grid; place-items: center; border-radius: 50%; background: var(--blue); }
.research-icon img { width: 72%; max-height: 75%; object-fit: contain; }
.research-list a { font-size: 1.2rem; }
.research-figure img { max-height: 680px; width: auto; margin-inline: auto; }
.research-figure a { display: block; width: fit-content; max-width: 100%; margin-inline: auto; }
figcaption { color: var(--muted); text-align: center; font-size: .88rem; margin-top: .6rem; }
.advisor-profile { display: grid; grid-template-columns: 200px 1fr; gap: 2.5rem; align-items: center; margin: 2rem 0 2.5rem; }
.advisor-photo { width: 200px; }
.advisor-profile h2 { font-size: 1.8rem; margin-top: 0; }
.advisor-profile ul { padding-left: 1.3rem; }
.publication-container { padding-inline: 3%; }
.publication-toolbar { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: .5rem 1rem; margin-bottom: 1.1rem; }
.publication-toolbar p { margin: 0; }
.publication-actions { display: flex; flex-wrap: wrap; gap: .6rem; }
.publication-backup { margin-bottom: 1rem; }
.publication-backup summary { cursor: pointer; padding: .65rem .85rem; color: var(--blue-dark); background: #e5eef6; border: 1px solid var(--line); }
.publication-backup summary:focus-visible { outline: 3px solid #a24800; outline-offset: 3px; }
.publication-backup[open] + .publication-frame { display: none; }
.publication-frame { display: block; width: 100%; height: 80vh; min-height: 720px; border: 1px solid var(--line); background: #fff; }
.publication-help { margin-top: 1rem; font-size: .9rem; }
.publication-snapshot { padding: 1.5rem; background: #fff; }
.publication-snapshot table { width: 100%; border-collapse: collapse; }
.publication-snapshot td, .publication-snapshot th { padding: .5rem; vertical-align: top; border-bottom: 1px solid var(--line); }
.publication-snapshot #publist-nav ul { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; list-style: none; padding: 0; }
.archive-notice { padding: .8rem 1rem; background: #e5eef6; border-inline-start: 3px solid var(--blue); font-size: .95rem; }
.archive-nav { display: flex; flex-wrap: wrap; gap: .5rem 1.2rem; padding-bottom: 1rem; margin-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
.legacy-content { background: #fff; padding: 1.4rem; }
.legacy-content table { width: 100%; border-collapse: collapse; }
.legacy-content td, .legacy-content th { vertical-align: top; padding: .35rem; }
.legacy-content td p { margin-bottom: .6rem; }
.legacy-content img { max-width: min(100%, 240px); margin-block: .5rem; }
.legacy-content table table img { max-width: min(100%, 160px); }
.archive-catalog { margin-top: 2rem; }
.site-footer { padding: 1.7rem 5%; background: #46515d; color: #f3f5f7; text-align: center; font-size: .9rem; }
.site-footer p { margin-bottom: .5rem; }
.site-footer a { color: #fff; }
.site-footer a:focus-visible { outline-color: #fff; }
.copyright { color: #e3e9ef; font-size: .8rem; }
@media (max-width: 1000px) {
  .shell { width: 94%; }
  .research-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .primary-nav a { padding-inline: .8rem; }
}
@media (max-width: 620px) {
  body { font-size: 1rem; }
  .shell { width: 100%; }
  .masthead { padding: 1.2rem 1.1rem; }
  .lab-name { font-size: 1.85rem; }
  .primary-nav { padding-inline: .5rem; gap: 0; }
  .primary-nav a { padding: .55rem .65rem; font-size: 1rem; }
  .index-container { padding: 1.6rem 1.1rem 2.5rem; }
  .home-columns, .contact-layout, .advisor-profile { grid-template-columns: 1fr; gap: 2rem; }
  .advisor-photo { width: 180px; }
  .advisor-profile h2 { font-size: 1.5rem; }
  .research-cards { gap: .75rem; }
  .research-card { padding-inline: 0; }
  .research-icon { width: 128px; }
  .publication-container { padding-inline: .7rem; }
  .publication-frame { min-height: 650px; height: 80vh; }
  .publication-snapshot, .legacy-content { padding: .65rem; }
  .legacy-content td, .legacy-content th { display: block; width: 100%; padding: .2rem; }
  .legacy-content img { max-width: 160px; }
  .legacy-content tr { display: block; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media print {
  .shell { width: 100%; }
  .masthead { background: none; padding: 0 0 1rem; }
  .primary-nav, .site-footer, .skip-link { display: none; }
  .index-container { background: #fff; padding: 0; }
  a { color: #000; }
}