* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; }

.site {
  --bg: #f4f8f3;
  --surface: rgba(255, 255, 255, .7);
  --surface-solid: rgba(255, 255, 255, .86);
  --text: #122018;
  --muted: #627067;
  --accent: #008a5b;
  --accent-deep: #00784f;
  --accent-soft: #d7f2e4;
  --line: rgba(0, 122, 81, .14);
  min-height: 100vh;
  color: var(--text);
  background: var(--bg);
  position: relative;
  overflow: hidden;
  transition: background .7s ease, color .55s ease;
}
.site.about-active {
  height: 100svh;
  min-height: 100svh;
  overflow: hidden;
  overscroll-behavior: none;
}
.site.night {
  --bg: #050713;
  --surface: rgba(13, 22, 48, .72);
  --surface-solid: rgba(10, 17, 39, .9);
  --text: #eefbff;
  --muted: #9cb4ce;
  --accent: #61e3ff;
  --accent-deep: #8deaff;
  --accent-soft: #172a55;
  --line: rgba(97, 227, 255, .2);
}

.topbar {
  height: 72px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: saturate(145%) blur(22px);
  -webkit-backdrop-filter: saturate(145%) blur(22px);
}
.topbar nav {
  width: min(1100px, calc(100% - 48px));
  height: 100%;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 32px;
}
.nav-link {
  appearance: none;
  padding: 8px 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
  font-size: 15px;
  font-weight: 560;
  letter-spacing: -.012em;
  transition: color .2s ease, transform .2s ease;
}
.nav-link:hover,
.nav-link.active { color: var(--text); }
.nav-link:hover { transform: translateY(-1px); }
.nav-link:focus-visible { outline: 2px solid color-mix(in srgb, var(--accent) 40%, transparent); outline-offset: 4px; border-radius: 4px; }

.mushroom-toggle {
  width: 46px;
  height: 46px;
  margin-left: 2px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-solid);
  display: grid;
  place-items: center;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(27, 72, 48, .1);
  transition: transform .25s ease, background .35s ease, box-shadow .35s ease;
}
.mushroom-toggle:hover { transform: translateY(-2px) rotate(-3deg); box-shadow: 0 12px 30px rgba(27, 72, 48, .16); }
.mushroom-toggle:active { transform: scale(.93); }
.mushroom-toggle:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 38%, transparent); outline-offset: 3px; }
.mushroom-toggle img { display: block; width: 34px; height: 34px; object-fit: contain; }
.night .mushroom-toggle { box-shadow: 0 0 24px rgba(57, 203, 255, .13), 0 8px 28px rgba(0, 0, 0, .34), inset 0 0 0 1px rgba(97, 227, 255, .08); }
.night .mushroom-toggle img { filter: saturate(.82) brightness(.9); }

.container {
  width: min(1100px, calc(100% - 48px));
  margin: auto;
  position: relative;
  z-index: 3;
}
.about-active .container { height: calc(100svh - 72px - 51px); }
.about { padding: 104px 0 132px; }
.about-active .about {
  height: 100%;
  padding: clamp(28px, 5vh, 58px) 0;
  display: flex;
  align-items: center;
}
.about-active .intro-grid { width: 100%; translate: 0 -10px; }
.about-active .profile-card { translate: 0 18px; }
.intro-grid {
  display: grid;
  grid-template-columns: 310px minmax(0, 1fr);
  gap: 82px;
  align-items: start;
}
.profile-card { width: 310px; margin: 0; padding: 0; }
.profile-card img {
  display: block;
  width: 310px;
  height: 390px;
  object-fit: cover;
  object-position: center 43%;
  border-radius: 30px;
  box-shadow: 0 30px 78px rgba(36, 82, 57, .16), 0 3px 12px rgba(36, 82, 57, .06);
  transition: box-shadow .55s ease, filter .55s ease, transform .35s ease;
}
.profile-card:hover img { transform: translateY(-3px); }
.night .profile-card img {
  box-shadow: 0 34px 90px rgba(0, 0, 0, .48), 0 0 36px rgba(66, 180, 255, .18), 0 0 0 1px rgba(97, 227, 255, .22);
  filter: saturate(.92) brightness(.93) contrast(1.04);
  object-position: center center;
}
.profile-card figcaption {
  padding: 20px 4px 0;
  color: var(--muted);
  text-align: center;
  line-height: 1.4;
}
.profile-card figcaption h1 {
  margin: 0 0 10px;
  font-size: 42px;
  line-height: .96;
  font-weight: 750;
  letter-spacing: -.062em;
}
.profile-card figcaption h1 span { color: var(--accent); }
.profile-card figcaption h1 a,
.profile-card figcaption h1 a:hover {
  color: inherit;
  font-weight: inherit;
  text-decoration: none;
}
.profile-card figcaption p { margin: 0; }
.identity-role { color: var(--text); font-size: 18px; font-weight: 620; letter-spacing: -.022em; }
.identity-university { margin-top: 7px !important; font-size: 16px; font-weight: 560; }
.identity-location { margin-top: 2px !important; font-size: 13px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; }

.page-view { animation: page-in .45s cubic-bezier(.2,.7,.2,1) both; }
.standalone-section {
  margin-top: 88px;
  margin-bottom: 88px;
  min-height: 580px;
}

.about-copy { padding-top: 8px; }
.about-title {
  margin: 0 0 34px;
  font-size: clamp(44px, 5vw, 58px);
  line-height: 1;
  font-weight: 740;
  letter-spacing: -.058em;
}
.about-copy > p {
  max-width: 650px;
  margin: 0 0 22px;
  font-size: 17.5px;
  line-height: 1.68;
  letter-spacing: -.012em;
}
.about a,
.content-section a { color: var(--accent-deep); text-decoration: none; font-weight: 610; }
.about a:hover,
.content-section a:hover { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 4px; }
.social-links { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 36px; }
.social-links a {
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: var(--surface);
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--text);
  font-size: 14px;
  font-weight: 650;
  text-decoration: none;
  box-shadow: 0 7px 22px rgba(29, 68, 48, .055);
  transition: transform .2s ease, background .2s ease, border-color .2s ease;
}
.social-links a:hover { color: var(--text); text-decoration: none; transform: translateY(-2px); border-color: color-mix(in srgb, var(--accent) 35%, transparent); }
.social-links span { color: var(--accent); font-size: 13px; }
.night .social-links a { box-shadow: 0 0 20px rgba(70, 204, 255, .08), inset 0 0 0 1px rgba(97, 227, 255, .035); }

.content-section {
  margin: 0 0 30px;
  padding: 70px 74px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: var(--surface-solid);
  box-shadow: 0 24px 72px rgba(32, 72, 49, .065);
  position: relative;
  overflow: hidden;
}
.night .content-section { box-shadow: 0 28px 86px rgba(0, 0, 0, .3), 0 0 40px rgba(57, 191, 255, .065); }
.content-section::after {
  content: "";
  position: absolute;
  width: 240px;
  height: 240px;
  right: -100px;
  top: -130px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent-soft) 56%, transparent), transparent 70%);
  pointer-events: none;
}
.section-heading { margin: 0 0 42px; position: relative; z-index: 1; }
.section-heading > p {
  margin: 0 0 10px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.content-section h2 {
  margin: 0;
  font-size: clamp(38px, 4.5vw, 52px);
  line-height: 1.02;
  font-weight: 730;
  letter-spacing: -.052em;
}
.publication-list { list-style: none; margin: 0; padding: 0; }
.publication-list li {
  display: grid;
  grid-template-columns: 66px 1fr;
  gap: 22px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.publication-list li:last-child { padding-bottom: 0; }
.year { padding-top: 4px; color: var(--accent); font-size: 14px; font-weight: 750; letter-spacing: -.01em; }
.publication-list li > div > strong { display: block; font-size: 19px; line-height: 1.42; font-weight: 670; letter-spacing: -.022em; }
.publication-list p { margin: 8px 0 0; color: var(--muted); font-size: 15px; line-height: 1.55; }
.publication-list .authors { color: var(--text); font-size: 14px; font-weight: 500; }
.publication-list .authors .author-me { display: inline; color: var(--text); font-size: inherit; line-height: inherit; font-weight: 760; letter-spacing: inherit; }
.publication-list .paper-links { display: flex; gap: 16px; margin-top: 12px; }
.publication-list .paper-links a { font-size: 12px; font-weight: 760; text-transform: uppercase; letter-spacing: .09em; }
.teaching-row {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 28px;
  padding: 27px 0;
  border-top: 1px solid var(--line);
}
.teaching-row:last-child { padding-bottom: 0; }
.teaching-row > span { padding-top: 3px; color: var(--accent); font-size: 14px; font-weight: 750; }
.teaching-row p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.65; }
.teaching-row strong { color: var(--text); font-size: 18px; font-weight: 670; letter-spacing: -.018em; }
footer {
  margin-top: 92px;
  border-top: 1px solid var(--line);
  padding: 28px;
  color: var(--muted);
  text-align: center;
  font-size: 12px;
  letter-spacing: .03em;
  position: relative;
  z-index: 3;
}
.about-active footer {
  width: 100%;
  margin: 0;
  padding: 17px 21px;
  position: absolute;
  left: 0;
  bottom: 0;
  display: block;
}

/* Forest world */
.forest-scene,
.night-scene {
  position: absolute;
  inset: 72px 0 auto;
  height: 920px;
  overflow: hidden;
  z-index: 1;
  pointer-events: none;
  transition: opacity .8s ease;
}
.night .forest-scene,
.forest .night-scene { opacity: 0; }
.forest .forest-scene,
.night .night-scene { opacity: 1; }
.forest-scene {
  background:
    linear-gradient(118deg, rgba(255,255,255,.52), transparent 35%),
    radial-gradient(circle at 10% 8%, rgba(179, 228, 180, .36), transparent 34%),
    radial-gradient(circle at 92% 58%, rgba(224, 236, 163, .28), transparent 35%);
}
.forest-canopy {
  position: absolute;
  display: block;
  border-radius: 46% 54% 55% 45% / 58% 46% 54% 42%;
  filter: blur(62px);
  opacity: .68;
}
.canopy-one {
  width: 640px;
  height: 470px;
  left: -290px;
  top: -210px;
  background: radial-gradient(ellipse at 62% 58%, #b8e2bb 0, #d9ecc0 43%, transparent 72%);
  animation: canopy-left 18s ease-in-out infinite alternate;
}
.canopy-two {
  width: 720px;
  height: 530px;
  right: -340px;
  top: 330px;
  background: radial-gradient(ellipse at 40% 45%, #d8e8a9 0, #b9ded0 44%, transparent 72%);
  animation: canopy-right 22s ease-in-out infinite alternate;
}
.forest-light {
  position: absolute;
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 238, .95);
  box-shadow: 0 0 24px 5px rgba(255, 232, 155, .34);
  animation: forest-drift 11s ease-in-out infinite;
}
.light-one { left: 9%; top: 170px; }
.light-two { right: 15%; top: 210px; animation-delay: -4s; }
.light-three { right: 35%; top: 670px; animation-delay: -7s; }
/* Night world */
.night-scene {
  background:
    radial-gradient(circle at 12% 8%, rgba(0, 210, 255, .18), transparent 32%),
    radial-gradient(circle at 88% 58%, rgba(133, 74, 255, .16), transparent 36%),
    radial-gradient(circle at 54% 76%, rgba(255, 64, 181, .075), transparent 32%);
}
.star { position: absolute; width: 2px; height: 2px; border-radius: 50%; background: #edfdff; box-shadow: 0 0 10px #5de6ff, 0 0 18px rgba(128, 93, 255, .65); animation: star-pulse 4s ease-in-out infinite; }
.star-one { left: 12%; top: 120px; }
.star-two { left: 64%; top: 85px; animation-delay: -1.5s; }
.star-three { right: 8%; top: 430px; animation-delay: -3s; }
.shooting-star {
  position: absolute;
  width: 190px;
  height: 1px;
  opacity: 0;
  background: linear-gradient(90deg, transparent, rgba(96, 225, 255, .24), #ecfdff);
  filter: drop-shadow(0 0 6px #54dfff) drop-shadow(0 0 12px rgba(137, 91, 255, .42));
  rotate: -24deg;
  transform-origin: right center;
  animation: shoot 11s ease-in infinite;
}
.shooting-one { right: 13%; top: 110px; }
.shooting-two { left: 28%; top: 330px; animation-delay: -6s; animation-duration: 15s; }
.shooting-three { right: 29%; top: 590px; animation-delay: -10s; animation-duration: 18s; }
@keyframes canopy-left { to { translate: 76px 48px; scale: 1.08; rotate: 4deg; } }
@keyframes canopy-right { to { translate: -70px -34px; scale: 1.06; rotate: -4deg; } }
@keyframes forest-drift { 0%,100% { translate: 0 0; scale: .7; opacity: .18; } 50% { translate: 18px -26px; scale: 1.3; opacity: .82; } }
@keyframes star-pulse { 0%,100% { opacity: .18; scale: .7; } 50% { opacity: 1; scale: 1.5; } }
@keyframes shoot { 0%,72% { translate: 0 0; opacity: 0; } 74% { opacity: 1; } 80%,100% { translate: -340px 150px; opacity: 0; } }
@keyframes page-in { from { opacity: 0; translate: 0 14px; } to { opacity: 1; translate: 0 0; } }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .forest-canopy,
  .forest-light,
  .star,
  .shooting-star { animation: none; }
  .shooting-star { display: none; }
  .page-view { animation: none; }
}

@media (max-height: 760px) and (min-width: 721px) {
  .about-active .about { padding: 22px 0; }
  .about-active .profile-card img { width: 272px; height: 326px; margin-inline: auto; }
  .about-active .profile-card { translate: 0 9px; }
  .about-active .profile-card figcaption { padding-top: 14px; }
  .about-active .profile-card figcaption h1 { margin-bottom: 7px; font-size: 36px; }
  .about-active .identity-role { font-size: 16px; }
  .about-active .identity-university { margin-top: 4px !important; font-size: 15px; }
  .about-active .identity-location { font-size: 12px; }
  .about-active .about-title { margin-bottom: 22px; font-size: 44px; }
  .about-active .about-copy > p { margin-bottom: 14px; font-size: 15px; line-height: 1.53; }
  .about-active .social-links { margin-top: 20px; }
  .about-active .social-links a { min-height: 36px; padding-inline: 13px; font-size: 12px; }
}

@media (max-width: 920px) {
  .intro-grid { grid-template-columns: 280px minmax(0,1fr); gap: 54px; }
  .profile-card,
  .profile-card img { width: 280px; }
  .profile-card img { height: 370px; }
  .profile-card figcaption h1 { font-size: 38px; }
  .about-copy > p { font-size: 16.5px; }
  .content-section { padding: 60px 52px; }
}

@media (max-width: 720px) {
  .site.about-active { height: auto; min-height: 100svh; overflow: visible; overscroll-behavior: auto; }
  .about-active .container { height: auto; }
  .about-active .about { height: auto; min-height: calc(100svh - 66px); padding: 54px 0 104px; display: block; }
  .about-active .intro-grid { translate: 0 0; }
  .about-active .profile-card { translate: 0 0; }
  .topbar { height: 66px; }
  .topbar nav { width: calc(100% - 28px); gap: 17px; }
  .nav-link { font-size: 13px; }
  .mushroom-toggle { width: 42px; height: 42px; padding: 6px; border-radius: 13px; }
  .mushroom-toggle img { width: 31px; height: 31px; }
  .container { width: calc(100% - 30px); }
  .about { padding: 54px 0 84px; }
  .intro-grid { grid-template-columns: 1fr; gap: 46px; }
  .profile-card { width: min(100%, 390px); }
  .profile-card img { width: 100%; height: auto; aspect-ratio: 4 / 5; border-radius: 26px; }
  .about-copy { padding-top: 0; }
  .profile-card figcaption h1 { font-size: 42px; }
  .about-title { margin-bottom: 28px; }
  .about-copy > p { font-size: 16.5px; line-height: 1.66; }
  .social-links a { font-size: 13px; padding: 0 13px; }
  .content-section { margin-bottom: 18px; padding: 46px 24px; border-radius: 27px; }
  .standalone-section { margin-top: 54px; margin-bottom: 54px; min-height: 0; }
  .section-heading { margin-bottom: 32px; }
  .publication-list li { grid-template-columns: 1fr; gap: 8px; padding: 24px 0; }
  .year { padding-top: 0; font-size: 13px; }
  .publication-list strong { font-size: 17px; }
  .publication-list p { font-size: 14px; }
  .teaching-row { grid-template-columns: 1fr; gap: 8px; padding: 24px 0; }
  .teaching-row > span { padding-top: 0; font-size: 13px; }
  .teaching-row p { font-size: 15px; }
  .teaching-row strong { font-size: 16px; }
  .forest-scene,
  .night-scene { inset: 66px 0 auto; }
  footer { margin-top: 62px; }
}

@media (max-width: 430px) {
  .topbar nav { gap: 13px; }
  .nav-link { font-size: 12px; }
}