@font-face {
  font-family: "Outfit";
  src: url("assets/fonts/outfit-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Ma Shan Zheng";
  src: url("assets/fonts/mashanzheng-name.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --text-primary: #20252d;
  --text-secondary: #454d59;
  --text-tertiary: #657080;
  --bg-primary: #ffffff;
  --highlight-blue: #f0f7ff;
  --accent-blue: #2563eb;
  --accent-orange: #b76b20;
  --line: #e5eaf0;
  --link-color: #235caf;
  --font-heading: Palatino, "Palatino Linotype", "Book Antiqua", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: "Outfit", "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
}
::selection { background: #dceafa; color: #182d49; }
a { color: var(--link-color); text-decoration: none; transition: color .18s ease; }
a:hover { color: var(--accent-orange); }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 4px;
  border-radius: 2px;
}
img { display: block; max-width: 100%; }
figure, blockquote, p { margin: 0; }
button, summary { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
strong { font-weight: 600; }
.muted, .muted a { color: var(--text-secondary); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 100; padding: 8px 16px; background: white; border: 1px solid var(--accent-blue); }
.skip-link:focus { top: 12px; }
.page-shell { width: min(940px, calc(100% - 400px)); margin: 0 auto; }
.page-section { scroll-margin-top: 38px; margin-top: 46px; }
.page-section:focus { outline: none; }

/* Section navigation adapted from the reference homepage. */
.section-nav {
  --indicator-y: 0px;
  --indicator-height: 30px;
  --indicator-x: 0px;
  --indicator-width: 56px;
  position: fixed;
  top: 50%;
  left: max(20px, calc(50% - 656px));
  width: 148px;
  transform: translateY(-50%);
  z-index: 20;
}
.section-nav__label { display: inline-block; margin: 0 0 16px 17px; font-family: var(--font-heading); font-size: 17px; color: var(--text-secondary); line-height: 1; }
.section-nav__track { position: relative; }
.section-nav__track::before { position: absolute; top: 0; bottom: 0; left: 0; width: 1px; background: var(--line); content: ""; }
.section-nav__indicator { position: absolute; top: 0; left: 0; width: 2px; height: var(--indicator-height); background: var(--accent-blue); transform: translateY(var(--indicator-y)); transition: height .2s ease, transform .3s ease; opacity: 0; }
.section-nav.is-ready .section-nav__indicator { opacity: 1; }
.section-nav__list { list-style: none; margin: 0; padding: 0; }
.section-nav__item { margin: 0; padding: 0; }
.section-nav__link { display: block; padding: 9px 4px 9px 17px; font-family: var(--font-heading); font-size: 15px; color: var(--text-tertiary); line-height: 1.3; transition: color .2s ease, transform .2s ease; }
.section-nav__link:hover, .section-nav__link.is-active { color: var(--link-color); transform: translateX(3px); }
.section-nav__link.is-active { font-weight: 600; }

/* Profile */
.profile { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 48px; align-items: center; margin-top: 66px; }
.name { display: flex; align-items: baseline; flex-wrap: wrap; gap: 12px; margin: 0 0 22px; font-family: var(--font-heading); font-size: 44px; font-weight: 400; line-height: 1.2; letter-spacing: -.025em; }
.name-divider { color: #a9b1bc; font-size: 27px; }
.chinese-name { font-family: "Ma Shan Zheng", "KaiTi", serif; font-size: 39px; font-weight: 400; letter-spacing: 0; }
.profile-intro { margin-top: 12px; line-height: 1.7; }
.profile-portrait { margin: 0; }
.portrait-caption { margin-top: 12px; text-align: center; color: var(--text-secondary); font-size: 13px; line-height: 1.55; }
.avatar { width: 100%; height: auto; object-fit: contain; object-position: center; border-radius: 48px; box-shadow: 0 4px 16px rgb(30 37 46 / 5%); }
.profile-links { display: flex; gap: 12px 21px; flex-wrap: wrap; align-items: center; margin-top: 21px; }
.profile-link { display: inline-flex; align-items: center; gap: 7px; font-size: 15.5px; color: var(--link-color); }
.profile-link img, .profile-link svg { width: 22px; height: 22px; object-fit: contain; flex-shrink: 0; }
.profile-link--rednote img { width: 24px; height: 24px; }
.profile-details { margin-top: 12px; font-size: 15px; }
.profile-details summary { display: inline-flex; align-items: center; gap: 9px; cursor: pointer; list-style: none; color: var(--link-color); font-size: 14px; }
.profile-details summary::-webkit-details-marker { display: none; }
.profile-details summary::after { content: ""; width: 5px; height: 5px; border-right: 1px solid; border-bottom: 1px solid; transform: rotate(45deg) translateY(-2px); transition: transform .2s ease; }
.profile-details[open] summary::after { transform: rotate(225deg); }
.profile-details__content { margin-top: 10px; padding: 6px 0 6px 15px; border-left: 2px solid #deebf9; color: var(--text-secondary); line-height: 1.8; }

/* Main sections */
.section-heading { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 10px 20px; margin-bottom: 20px; }
.section-title { margin: 0; font-family: var(--font-heading); font-size: 31px; font-weight: 400; letter-spacing: 0; line-height: 1.25; }
.news-section { margin-top: 40px; }
.news-list { list-style: none; margin: 0; padding: 0; }
.news-list li { display: grid; grid-template-columns: 87px minmax(0, 1fr); gap: 15px; margin-top: 9px; font-size: 16px; }
.news-list time { color: var(--text-tertiary); font-size: 15px; font-variant-numeric: tabular-nums; }
.news-list em { font-style: normal; }
.news-archive { margin-top: 12px; }
.news-archive summary { width: fit-content; color: var(--link-color); font-size: 14px; cursor: pointer; }
.news-archive .news-list { margin-top: 12px; }

/* Publications: two highlighted works by default; all papers remain in HTML. */
.research-heading { margin-bottom: 8px; }
.research-toggle { border: 0; border-bottom: 1px solid #b9cce7; padding: 2px 0; background: transparent; color: var(--link-color); font-size: 15.5px; cursor: pointer; }
.research-toggle:hover { color: var(--accent-orange); }
.paper-meta-note { margin: 0 0 18px; color: var(--text-tertiary); font-size: 14px; }
.paper-row { display: grid; grid-template-columns: 225px minmax(0, 1fr); gap: 27px; align-items: center; padding: 23px 18px; margin: 13px -18px; }
.highlight-paper { background: var(--highlight-blue); }
.paper-figure { display: block; min-width: 0; }
.paper-figure img { width: 100%; height: auto; max-height: 215px; object-fit: contain; transition: opacity .18s ease; }
.paper-figure:hover img { opacity: .85; }
.papertitle { margin: 0 0 8px; font-family: "Outfit", "Segoe UI", sans-serif; font-size: 18px; font-weight: 650; line-height: 1.45; color: var(--link-color); }
.papertitle a { color: inherit; }
.papertitle a:hover { color: var(--accent-orange); }
.authors { color: var(--text-secondary); font-size: 15.5px; line-height: 1.55; }
.author-self { position: relative; z-index: 0; display: inline-block; padding: 0 1px; font-weight: 600; color: var(--text-primary); isolation: isolate; }
.author-self::before { position: absolute; top: 50%; right: -2px; left: -2px; z-index: -1; height: .9em; background: linear-gradient(90deg, #ffe95e12, #ffe95e60 12%, #fff17661 80%, #ffe95e12); clip-path: polygon(0 22%, 9% 10%, 36% 17%, 68% 5%, 100% 18%, 99% 84%, 82% 94%, 51% 88%, 21% 100%, 1% 84%); content: ""; transform: translateY(-50%) rotate(-.7deg) skewX(-2deg); }
.venue-full { color: var(--text-primary); font-size: 15px; font-style: italic; margin-top: 6px; line-height: 1.55; }
.paper-description { margin-top: 10px; color: var(--text-secondary); font-size: 16px; line-height: 1.6; }
.paper-links-group { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 20px; margin-top: 14px; }
.link-with-icon { display: inline-flex; align-items: center; gap: 7px; font-size: 15.5px; font-weight: 500; }
.link-with-icon img, .link-with-icon svg { width: 20px; height: 20px; flex-shrink: 0; object-fit: contain; }

/* Education and dated experience */
.institution-row { display: grid; grid-template-columns: 108px minmax(0, 1fr) auto; gap: 24px; align-items: center; padding: 15px 0; }
.institution-logo { display: flex; align-items: center; justify-content: center; width: 108px; min-height: 65px; }
.institution-logo img { object-fit: contain; }
.institution-copy h3 { font-size: 18px; line-height: 1.45; font-weight: 600; margin: 0 0 4px; }
.institution-copy h3 a { color: var(--text-primary); }
.institution-copy h3 a:hover { color: var(--link-color); }
.institution-copy p { color: var(--text-secondary); font-size: 16px; line-height: 1.55; }
.institution-date { text-align: right; color: var(--text-secondary); font-size: 15px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.institution-date span { display: block; color: var(--text-tertiary); font-size: 14px; }
.institution-date .date-note { display: inline; margin-left: 5px; font-size: 12.5px; font-style: italic; }
.education-row { padding: 0; }
.experience-list .institution-row:first-child { padding-top: 0; }
.experience-list .institution-row:last-child { padding-bottom: 0; }

.awards-list { list-style: none; padding: 0; margin: 0; }
.awards-list li { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; padding: 3px 0; font-size: 17px; line-height: 1.45; letter-spacing: 0; }
.award-year { order: 2; text-align: right; font-size: 15px; color: var(--text-secondary); font-variant-numeric: tabular-nums; white-space: nowrap; }
.language-score { font-size: 17px; line-height: 1.65; }
.language-score span { color: var(--text-secondary); }
.beyond-layout p { font-size: 16.5px; line-height: 1.7; }
.beyond-layout p + p { margin-top: 12px; }
.film-note { margin-top: 15px; font-size: 16.5px; line-height: 1.7; }
.personal-quote { margin: 30px 0 0; padding: 12px 0 12px 20px; border-left: 2px solid #dbe8f6; }
.personal-quote p { font-family: var(--font-heading); font-size: 19px; line-height: 1.6; color: var(--text-secondary); font-style: italic; }
.personal-quote cite { display: block; margin-top: 10px; font-size: 14px; font-style: normal; color: var(--text-tertiary); }
.site-footer { display: flex; justify-content: flex-end; align-items: center; padding: 34px 0; }
.back-top { color: var(--text-secondary); font-size: 21px; }

/* Native figure preview. */
.figure-dialog { width: min(1120px, calc(100% - 36px)); max-height: calc(100dvh - 50px); padding: 44px 24px 20px; border: 1px solid #dbe3ef; border-radius: 6px; color: var(--text-primary); background: white; }
.figure-dialog::backdrop { background: #14283c99; }
.figure-dialog img { max-height: calc(100dvh - 180px); width: 100%; object-fit: contain; }
.figure-dialog figcaption { text-align: center; font-size: 15px; color: var(--text-secondary); margin-top: 18px; }
.dialog-close { position: absolute; top: 5px; right: 12px; width: 38px; height: 38px; border: 0; background: none; color: var(--text-secondary); font-size: 29px; cursor: pointer; }
body:has(.figure-dialog[open]) { overflow: hidden; }

@media (max-width: 1170px) {
  .page-shell { width: min(940px, calc(100% - 64px)); }
  .section-nav { position: sticky; top: 0; left: auto; width: 100%; transform: none; background: #fffffff5; border-bottom: 1px solid var(--line); }
  .section-nav__inner { display: flex; align-items: center; gap: 15px; max-width: 1004px; margin: 0 auto; padding: 0 28px; }
  .section-nav__label { margin: 0; flex-shrink: 0; font-size: 17px; }
  .section-nav__track { flex: 1; min-width: 0; overflow-x: auto; scrollbar-width: none; }
  .section-nav__track::-webkit-scrollbar { display: none; }
  .section-nav__track::before { display: none; }
  .section-nav__list { display: flex; width: max-content; }
  .section-nav__link { padding: 17px 11px; white-space: nowrap; font-size: 15px; }
  .section-nav__link:hover, .section-nav__link.is-active { transform: none; }
  .section-nav__indicator { top: auto; bottom: 0; height: 2px; width: var(--indicator-width); transform: translateX(var(--indicator-x)); transition: width .2s ease, transform .3s ease; }
  .page-section { scroll-margin-top: 85px; }
  .profile { margin-top: 40px; }
  .paper-row { margin-right: 0; margin-left: 0; }
}

@media (max-width: 850px) {
  .profile { grid-template-columns: minmax(0, 1fr) 210px; gap: 26px; }
  .avatar { border-radius: 38px; }
  .name { font-size: 38px; gap: 9px; }
  .chinese-name { font-size: 34px; }
  .paper-row { grid-template-columns: 190px minmax(0, 1fr); gap: 22px; padding: 21px 15px; }
  .institution-row { grid-template-columns: 88px minmax(0, 1fr); gap: 5px 20px; }
  .institution-logo { width: 88px; grid-row: span 2; }
  .institution-date { grid-column: 2; text-align: left; }
  .institution-date span { display: inline; margin-left: 8px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .page-shell { width: calc(100% - 36px); }
  .section-nav__inner { padding: 0 18px; gap: 12px; }
  .section-nav__link { padding: 15px 10px; font-size: 14px; }
  .profile { display: flex; flex-direction: column; align-items: stretch; gap: 0; margin-top: 26px; }
  .profile-portrait { order: -1; align-self: center; width: 210px; margin: 0 0 26px; }
  .name { justify-content: center; gap: 10px; font-size: 36px; margin-bottom: 19px; }
  .name-divider { font-size: 22px; }
  .chinese-name { font-size: 32px; }
  .profile-links { gap: 13px 20px; }
  .profile-link { font-size: 15px; }
  .page-section { margin-top: 38px; }
  .profile { margin-top: 26px; }
  .section-title { font-size: 28px; }
  .section-heading { margin-bottom: 17px; }
  .news-list li { grid-template-columns: 74px minmax(0, 1fr); gap: 10px; font-size: 15.5px; }
  .news-list time { font-size: 14.5px; }
  .research-heading { gap: 8px 20px; margin-bottom: 10px; }
  .research-toggle { font-size: 15px; }
  .paper-meta-note { font-size: 13.5px; }
  .paper-row { grid-template-columns: 1fr; gap: 18px; padding: 20px 15px; margin-top: 15px; }
  .paper-figure img { max-height: 215px; }
  .papertitle { font-size: 18px; line-height: 1.5; }
  .authors { font-size: 15.5px; }
  .venue-full { font-size: 15px; }
  .paper-description { font-size: 16px; }
  .paper-links-group { gap: 12px 19px; }
  .link-with-icon { font-size: 15px; }
  .institution-row { grid-template-columns: 66px minmax(0, 1fr); gap: 5px 15px; padding: 14px 0; }
  .institution-logo { width: 66px; min-height: 48px; }
  .institution-logo img { max-width: 62px; max-height: 56px; }
  .institution-logo--wide img { max-width: 66px; }
  .institution-copy h3 { font-size: 17px; }
  .institution-copy p { font-size: 15.5px; }
  .institution-date { font-size: 15px; white-space: normal; }
  .awards-list li { font-size: 16px; gap: 14px; padding: 3px 0; }
  .award-year { font-size: 15px; }
  .language-score { font-size: 16px; }
  .beyond-layout p, .film-note { font-size: 16px; }
  .personal-quote { margin-top: 27px; padding-left: 15px; }
  .personal-quote p { font-size: 18px; }
  .site-footer { font-size: 12px; padding: 28px 0; }
  .figure-dialog { padding: 46px 12px 18px; }
}

@media (max-width: 360px) {
  .name { font-size: 31px; gap: 8px; }
  .chinese-name { font-size: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

@media print {
  .section-nav, .skip-link, .back-top, .figure-dialog, .research-toggle { display: none !important; }
  .page-shell { width: 100%; }
  .profile { margin-top: 0; }
  .page-section { margin-top: 24px; }
  .paper-row { break-inside: avoid; margin-left: 0; margin-right: 0; }
}

/* Liquid glass: frosted, refractive surfaces. */
:root {
  --glass-bg: rgb(255 255 255 / 42%);
  --glass-bg-strong: rgb(255 255 255 / 62%);
  --glass-tint: linear-gradient(135deg, rgb(236 245 255 / 78%), rgb(255 255 255 / 46%) 55%, rgb(244 238 255 / 58%));
  --glass-blur: blur(16px) saturate(180%);
  --glass-shadow: 0 10px 30px rgb(31 56 98 / 10%), 0 2px 6px rgb(31 56 98 / 6%);
  --glass-inner: inset 0 1px 0 rgb(255 255 255 / 90%), inset 0 -1px 1px rgb(255 255 255 / 40%), inset 0 0 18px rgb(255 255 255 / 30%);
  --glass-rim: linear-gradient(135deg, rgb(255 255 255 / 95%), rgb(255 255 255 / 12%) 38%, rgb(190 210 240 / 18%) 62%, rgb(255 255 255 / 80%));
  --spring: cubic-bezier(.34, 1.56, .64, 1);
}

.profile-link, .highlight-paper, .back-top,
.figure-dialog, .dialog-close, .section-nav__indicator, .profile-portrait {
  position: relative;
  background: var(--glass-bg);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  box-shadow: var(--glass-shadow), var(--glass-inner);
}
/* Specular rim: a gradient hairline that catches light on opposite corners. */
.profile-link::before, .highlight-paper::before,
.back-top::before, .figure-dialog::before, .section-nav__indicator::before, .profile-portrait::before {
  position: absolute; inset: 0; z-index: 0; padding: 1px; border-radius: inherit; pointer-events: none; content: "";
  background: var(--glass-rim);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}

/* liquid-glass.js (ported from liquid-glass-react): the element itself stays clear; a warp layer holds the
   frosted, refracted backdrop, two rim layers catch light from the cursor and a shine layer answers hover/press. */
.lg { isolation: isolate; background: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; }
.lg::before { display: none; }
.lg-layer { position: absolute; inset: 0; z-index: -1; border-radius: inherit; pointer-events: none; }
.lg-warp {
  overflow: hidden;
  background: var(--lg-tint, rgb(255 255 255 / 45%));
  -webkit-backdrop-filter: blur(var(--lg-blur, 6px)) saturate(var(--lg-saturation, 140%));
  backdrop-filter: blur(var(--lg-blur, 6px)) saturate(var(--lg-saturation, 140%));
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 85%), inset 0 -1px 1px rgb(255 255 255 / 35%);
}
.lg-rim {
  padding: 1.5px;
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  box-shadow: 0 0 0 .5px rgb(255 255 255 / 50%) inset, 0 1px 3px rgb(255 255 255 / 25%) inset, 0 1px 4px rgb(31 56 98 / 12%);
  transition: background .2s ease-out;
}
/* Upstream uses white rims with screen/overlay blending (tuned for dark photos). Blend modes here would turn
   the glass element into a backdrop root and cut off the warp layer's backdrop, so the rims use plain alpha;
   on a white page the second rim is a cool grey so the edge still reads. */
.lg-rim--screen {
  opacity: .7;
  background: linear-gradient(var(--lg-angle, 135deg), rgb(255 255 255 / 0) 0%, rgb(255 255 255 / var(--lg-rim-a, .32)) var(--lg-stop-a, 33%), rgb(255 255 255 / var(--lg-rim-b, .6)) var(--lg-stop-b, 66%), rgb(255 255 255 / 0) 100%);
}
.lg-rim--overlay {
  background: linear-gradient(var(--lg-angle, 135deg), rgb(120 146 190 / 18%) 0%, rgb(120 146 190 / calc(var(--lg-rim-a, .32) * .9)) var(--lg-stop-a, 33%), rgb(150 172 210 / calc(var(--lg-rim-b, .6) * .6)) var(--lg-stop-b, 66%), rgb(120 146 190 / 18%) 100%);
}
.lg-shine {
  opacity: 0;
  background: radial-gradient(circle at 50% 0%, rgb(219 234 254 / 90%) 0%, rgb(219 234 254 / 0) 70%);
  transition: opacity .2s ease-out;
}
.lg:hover > .lg-shine { opacity: .6; }
.lg.lg-active > .lg-shine { opacity: 1; background: radial-gradient(circle at 50% 0%, rgb(191 219 254 / 95%) 0%, rgb(219 234 254 / 0) 85%); }
.lg:not([data-lg-elastic="false"]) {
  translate: var(--lg-tx, 0px) var(--lg-ty, 0px);
  scale: var(--lg-sx, 1) var(--lg-sy, 1);
}
.lg.lg-active:not([data-lg-elastic="false"]) { scale: .96; }

.section-nav__label { margin-left: 14px; }
.section-nav__track::before { display: none; }
.section-nav__list { position: relative; z-index: 1; }
/* The droplet sits above the labels, like iOS tab bars, so its rim refracts the active label underneath. */
.section-nav__link { padding-left: 14px; border-radius: 14px; }
.section-nav__indicator {
  position: absolute; right: 0; z-index: 2; background: transparent; width: auto; border-radius: 14px; pointer-events: none;
  --lg-tint: rgb(219 234 254 / 32%); --lg-blur: 0px; --lg-saturation: 160%;
  box-shadow: 0 4px 14px rgb(37 99 235 / 14%), 0 0 0 1px rgb(37 99 235 / 6%);
  transition: height .25s ease, transform .5s var(--spring);
}

.profile-portrait { padding: 10px; border-radius: 58px; }
.profile-portrait .avatar { position: relative; z-index: 1; box-shadow: none; }
.profile-links { gap: 12px; }
.profile-link { padding: 8px 16px 8px 12px; border-radius: 999px; transition: translate .2s ease-out, scale .2s ease-out, box-shadow .2s ease; }
.profile-link:hover { color: var(--link-color); }
.profile-link:not(.lg):active { scale: .96; }

/* Plain text toggle with a sliding underline; the paper list animates in interactions.js. */
.research-toggle {
  position: relative; border: 0; padding: 2px 0;
  background: linear-gradient(currentColor, currentColor) left bottom / 0 1px no-repeat, linear-gradient(#b9cce7, #b9cce7) left bottom / 100% 1px no-repeat;
  transition: color .2s ease, background-size .35s ease, transform .3s var(--spring);
}
.research-toggle:hover { background-size: 100% 1px, 100% 1px; }
.research-toggle:active { transform: scale(.95); }
.research-toggle.is-switching, #research-heading.is-switching { animation: label-swap .36s ease; }
@keyframes label-swap {
  0% { opacity: 1; transform: translateY(0); filter: blur(0); }
  45% { opacity: 0; transform: translateY(-6px); filter: blur(2px); }
  55% { opacity: 0; transform: translateY(6px); filter: blur(2px); }
  100% { opacity: 1; transform: translateY(0); filter: blur(0); }
}

.paper-row { border-radius: 24px; }
.highlight-paper:not(.lg) { background: var(--glass-tint); }
.highlight-paper {
  transition: transform .45s var(--spring), box-shadow .3s ease, translate .2s ease-out, scale .2s ease-out;
}
.highlight-paper:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgb(31 56 98 / 13%), var(--glass-inner); }
.highlight-paper:not(.lg) > * { position: relative; z-index: 1; }
/* Cards as liquid glass: a gentle lean toward the cursor, rims that brighten, and a soft caustic
   highlight that follows the pointer across the surface. */
.highlight-paper.lg { --lg-tint: var(--glass-tint); --lg-blur: 16px; --lg-saturation: 180%; }
.highlight-paper.lg > .lg-warp { transition: background .3s ease, box-shadow .3s ease; }
.highlight-paper.lg > .lg-rim { opacity: .55; transition: opacity .3s ease, background .2s ease-out; }
.highlight-paper.lg > .lg-shine {
  background:
    radial-gradient(300px circle at var(--lg-px, 50%) var(--lg-py, 0%), rgb(147 197 253 / 30%) 0%, rgb(196 181 253 / 14%) 45%, rgb(196 181 253 / 0) 75%),
    radial-gradient(520px circle at var(--lg-px, 50%) var(--lg-py, 0%), rgb(255 255 255 / 70%) 0%, rgb(255 255 255 / 0) 60%);
  transition: opacity .35s ease;
}
.highlight-paper.lg:hover > .lg-rim { opacity: 1; }
.highlight-paper.lg:hover > .lg-rim--overlay {
  background: linear-gradient(var(--lg-angle, 135deg), rgb(120 146 190 / 25%) 0%, rgb(96 130 200 / 70%) var(--lg-stop-a, 33%), rgb(167 139 250 / 55%) var(--lg-stop-b, 66%), rgb(120 146 190 / 25%) 100%);
}
.highlight-paper.lg:hover > .lg-shine { opacity: 1; }
.highlight-paper.lg:hover > .lg-warp {
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 95%), inset 0 -1px 1px rgb(255 255 255 / 50%), inset 0 0 28px rgb(255 255 255 / 55%);
}
.highlight-paper.lg.lg-active { scale: .985; }
.highlight-paper.lg.lg-active > .lg-shine { background: radial-gradient(360px circle at var(--lg-px, 50%) var(--lg-py, 0%), rgb(191 219 254 / 70%) 0%, rgb(219 234 254 / 0) 65%); }
.paper-figure img { border-radius: 12px; }

.education-list { display: grid; gap: 18px; }

.back-top {
  position: fixed; right: 26px; bottom: 26px; z-index: 30;
  display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%;
  color: var(--text-primary); font-size: 20px; line-height: 1;
  opacity: 0; pointer-events: none; transform: scale(.7);
  transition: opacity .25s ease, transform .45s var(--spring), translate .2s ease-out, scale .2s ease-out;
}
.back-top.is-visible { opacity: 1; pointer-events: auto; transform: scale(1); }
.back-top:not(.lg):active { scale: .96; }

.figure-dialog { position: fixed; border: 0; border-radius: 28px; background: var(--glass-bg-strong); -webkit-backdrop-filter: blur(28px) saturate(180%); backdrop-filter: blur(28px) saturate(180%); }
.figure-dialog > * { position: relative; z-index: 1; }
.figure-dialog > form { position: static; }
.figure-dialog::backdrop { background: rgb(20 40 60 / 35%); -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px); }
.dialog-close { position: absolute; top: 10px; right: 12px; z-index: 2; display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; font-size: 22px; line-height: 1; }

@media (max-width: 1170px) {
  /* Compact bar stays frosted (no outline) so text scrolling underneath remains legible. */
  .section-nav { background: rgb(255 255 255 / 72%); -webkit-backdrop-filter: blur(16px) saturate(180%); backdrop-filter: blur(16px) saturate(180%); border-bottom: 1px solid rgb(229 234 240 / 70%); }
  .section-nav__label { margin: 0; }
  .section-nav__link { padding: 13px 14px; border-radius: 999px; }
  .section-nav__indicator { top: 6px; bottom: 6px; right: auto; width: var(--indicator-width); height: auto; border-radius: 999px; transition: width .25s ease, transform .5s var(--spring); }
  .page-section { scroll-margin-top: 90px; }
}
@media (max-width: 640px) {
  .section-nav__link { padding: 12px 11px; }
  .profile-portrait { border-radius: 48px; }
  .back-top { right: 16px; bottom: 16px; }
}

@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  :root { --glass-bg: rgb(255 255 255 / 88%); --glass-bg-strong: rgb(255 255 255 / 96%); }
}
@media (prefers-reduced-transparency: reduce) {
  :root { --glass-bg: #ffffff; --glass-bg-strong: #ffffff; --glass-tint: var(--highlight-blue); }
  .lg-warp { background: #ffffff; }
  .highlight-paper .lg-warp { background: var(--highlight-blue); }
}
@media print {
  .back-top { display: none !important; }
  .highlight-paper { box-shadow: none; background: var(--highlight-blue); }
}