:root {
    --text-color: #494e52;
    --muted-color: #68727b;
    --link-color: #3978a1;
    --line-color: #edf0f2;
    --nav-height: 64px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + 24px); }
body { margin: 0; background: #fff; color: var(--text-color); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif; font-size: 15px; line-height: 1.65; }
a { color: var(--link-color); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--link-color); outline-offset: 4px; }
[hidden] { display: none !important; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 100; padding: 8px 16px; background: #fff; }
.skip-link:focus { top: 8px; }
.masthead { position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .97); border-bottom: 1px solid var(--line-color); }
.masthead-inner { max-width: 1320px; min-height: var(--nav-height); padding: 0 28px; margin: 0 auto; display: flex; align-items: center; gap: 30px; }
.site-title { flex-shrink: 0; font-weight: 700; color: var(--text-color); }
.site-nav { display: flex; align-items: center; gap: 23px; overflow-x: auto; scrollbar-width: thin; padding: 16px 2px; }
.site-nav a { flex-shrink: 0; font-size: 14px; color: var(--muted-color); position: relative; }
.site-nav a:hover, .site-nav a.active { color: var(--link-color); text-decoration: none; }
.site-nav a.active::after { content: ""; position: absolute; height: 2px; background: var(--link-color); bottom: -8px; left: 0; right: 0; }
.page-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 46px; max-width: 1320px; margin: 0 auto; padding: 36px 28px 60px; }
.profile-sidebar { position: sticky; top: calc(var(--nav-height) + 32px); align-self: start; }
.profile-img { display: block; width: 175px; height: 175px; object-fit: cover; border-radius: 50%; padding: 5px; border: 1px solid #f0f1f2; margin: 0 0 18px; }
h1 { font-size: 23px; line-height: 1.3; margin: 0 0 10px; }
.profile-role { margin: 0 0 22px; font-size: 14px; }
.profile-links { list-style: none; padding: 0; margin: 0; font-size: 13px; }
.profile-links li { display: flex; align-items: flex-start; gap: 10px; margin: 12px 0; overflow-wrap: anywhere; }
.profile-links a { color: var(--text-color); }
.profile-links a:hover { color: var(--link-color); }
.profile-links svg { flex: 0 0 16px; width: 16px; height: 16px; margin-top: 3px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.page-content { min-width: 0; }
section { margin: 0 0 34px; }
h2 { font-size: 22px; line-height: 1.4; font-weight: 600; border-bottom: 1px solid var(--line-color); padding-bottom: 10px; margin: 0 0 18px; }
.section-icon { margin-right: 9px; font-size: 20px; }
p { margin: 0 0 12px; }
.news-list { padding-left: 22px; margin: 0; }
.news-list li { padding-left: 4px; margin-bottom: 8px; }
.news-date { font-style: italic; white-space: nowrap; margin-right: 8px; }
.item { margin-bottom: 23px; }
.item:last-child { margin-bottom: 0; }
.item-header { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 4px 16px; }
.title { font-weight: 600; }
.subtitle { color: var(--muted-color); font-size: 14px; margin-top: 3px; }
.date { font-style: italic; font-size: 13px; color: var(--muted-color); white-space: nowrap; }
.details { margin-top: 7px; font-size: 14px; }
.details ul { padding-left: 20px; }
.interest-list { display: flex; flex-wrap: wrap; list-style: none; gap: 8px 24px; padding: 0; margin: 0; }
.interest-item::before { content: "•"; color: var(--link-color); margin-right: 9px; }
.publication-item { display: grid; grid-template-columns: minmax(180px, 34%) minmax(0, 1fr); gap: 26px; padding: 23px 0; margin: 0; border-bottom: 1px solid var(--line-color); }
.publication-item:last-child { border-bottom: 0; padding-bottom: 0; }
.publication-figure { position: relative; margin: 4px 0 0; align-self: start; }
.publication-badge { position: absolute; top: -10px; left: -7px; z-index: 1; color: white; background: #174b80; font-size: 11px; line-height: 1.5; padding: 3px 10px; font-weight: 600; }
.publication-figure--review .publication-badge { background: #667580; }
/* Replace the empty div in each figure with <img src="images/your-paper.jpg" alt="...">. */
.publication-image-placeholder { aspect-ratio: 16 / 10; background: #fafbfc; border: 1px solid #e8edf1; }
.publication-image-link { display: block; }
.publication-figure img { display: block; width: 100%; height: auto; }
.pub-title { font-size: 15px; line-height: 1.55; font-weight: 700; margin: 0 0 8px; }
.publication-copy .details { margin-top: 0; }
.pub-status { display: inline-block; font-size: 13px; color: var(--muted-color); margin-top: 8px; }
.links { margin-top: 9px; font-size: 13px; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.links a { display: inline-flex; align-items: center; gap: 5px; }
.paper-link svg { width: 15px; height: 15px; stroke: currentColor; fill: none; }
.project-list { padding-left: 22px; margin: 0; }
.project-list > li { margin-bottom: 22px; padding-left: 4px; }
.project-list > li:last-child { margin-bottom: 0; }
.project-list .date { font-size: inherit; }
.project-description { font-size: 14px; margin: 6px 0 0; }
.project-description::before { content: "- "; }
.gpa-list li + li { margin-top: 5px; }
.gpa-list { list-style: none; padding: 0 !important; margin: 12px 0 0; }
.section-note { color: var(--muted-color); font-size: 13px; }
#awards ul, #others ul { margin: 0; padding-left: 22px; }
#awards li, #others li { margin-bottom: 9px; }
.award-description { display: block; color: var(--muted-color); font-size: 14px; margin-top: 2px; }
.visitor-map { min-height: 150px; max-width: 100%; }
.visitor-map iframe, .visitor-map img { max-width: 100%; }
.page-footer { padding: 20px 0 0; border-top: 1px solid var(--line-color); font-size: 12px; color: var(--muted-color); }
@media (max-width: 1000px) {
    .masthead-inner { gap: 24px; padding: 0 22px; }
    .site-nav { gap: 20px; }
    .page-layout { grid-template-columns: 190px minmax(0, 1fr); gap: 30px; padding: 30px 22px 48px; }
    .profile-img { width: 155px; height: 155px; }
    .publication-item { grid-template-columns: minmax(160px, 34%) minmax(0, 1fr); gap: 20px; }
}
@media (max-width: 760px) {
    :root { --nav-height: 60px; }
    .masthead-inner { padding: 0 18px; gap: 20px; }
    .site-title { font-size: 14px; }
    .site-nav { gap: 18px; }
    .site-nav a { font-size: 13px; }
    .page-layout { display: block; padding: 26px 20px 40px; }
    .profile-sidebar { position: static; display: grid; grid-template-columns: 108px minmax(0, 1fr); gap: 14px 20px; margin-bottom: 34px; padding-bottom: 26px; border-bottom: 1px solid var(--line-color); }
    .profile-img { width: 108px; height: 108px; margin: 0; }
    .profile-summary { align-self: center; }
    h1 { font-size: 22px; }
    .profile-role { margin: 0; }
    .profile-links { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 8px 20px; }
    .profile-links li { margin: 0; }
    .profile-location { flex-basis: 100%; }
    h2 { font-size: 21px; }
}
@media (max-width: 520px) {
    .publication-item { grid-template-columns: 1fr; gap: 16px; padding: 25px 0; }
    .publication-figure { width: min(100%, 300px); }
    .publication-image-placeholder { aspect-ratio: 16 / 9; }
    .item-header { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}