/* Research portfolio. Native CSS; Geist + one indigo accent.
   Layers: content 0, sticky header 20, floating controls 30, skip link 40.
   Shapes: 6px panels, 999px buttons. Light/dark share semantic tokens. */
@font-face {
  font-family: Geist;
  src: url("../assets/fonts/geist.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("../assets/fonts/jetbrains-mono.woff2") format("woff2");
  font-weight: 100 800;
  font-display: swap;
}
:root {
  --font-sans: Geist, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --bg: #f6f6f8;
  --bg-alt: #eeeef3;
  --card-bg: #fcfcfd;
  --ink-strong: #20212c;
  --ink: #41434f;
  --ink-muted: #606271;
  --ink-faint: #696b7b;
  --accent: #4f46c8;
  --accent-strong: #39339e;
  --accent-ink: #4940b7;
  --accent-soft: #e9e8f7;
  --border: #dcdce5;
  --border-strong: #b8b8ca;
  --header-h: 76px;
  --maxw: 1240px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  color-scheme: light;
}
[data-theme="dark"] {
  --bg: #15151d;
  --bg-alt: #1b1b26;
  --card-bg: #20202c;
  --ink-strong: #f1f0f7;
  --ink: #d0cedd;
  --ink-muted: #aaa8bb;
  --ink-faint: #a4a1b7;
  --accent: #afa8ff;
  --accent-strong: #cac5ff;
  --accent-ink: #b9b3ff;
  --accent-soft: #302c4c;
  --border: #343340;
  --border-strong: #575368;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}
body {
  margin: 0;
  font: 16px/1.75 var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}
h1,
h2,
h3,
h4,
p,
figure {
  margin: 0;
}
h1,
h2,
h3,
h4 {
  color: var(--ink-strong);
  line-height: 1.2;
}
ul,
ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
a {
  color: var(--accent-ink);
  text-decoration: none;
}
a:hover {
  color: var(--accent-strong);
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button {
  font: inherit;
  cursor: pointer;
}
img {
  display: block;
  max-width: 100%;
}
strong {
  font-weight: 620;
  color: var(--ink-strong);
}
.container {
  width: min(var(--maxw), calc(100% - 80px));
  margin-inline: auto;
}
.icon {
  width: 1.1em;
  height: 1.1em;
  flex: none;
}
.skip-link {
  position: fixed;
  top: 10px;
  left: 16px;
  z-index: 40;
  padding: 12px 20px;
  background: var(--card-bg);
  transform: translateY(-150%);
}
.skip-link:focus {
  transform: none;
}
:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
  border-radius: 3px;
}
::selection {
  background: var(--accent);
  color: var(--bg);
}
/* Navigation stays accessible while the document moves underneath it. */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 94%, transparent);
  backdrop-filter: blur(16px);
}
.nav-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-strong);
  flex-shrink: 0;
}
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: var(--bg);
  border-radius: 6px;
  font-weight: 650;
}
.brand-name {
  font-weight: 600;
  font-size: 14px;
}
.site-nav {
  margin-left: auto;
}
.nav-list {
  display: flex;
  gap: 20px;
  align-items: center;
}
.nav-link {
  position: relative;
  font-size: 12px;
  font-weight: 550;
  display: block;
  padding: 26px 0;
  color: var(--ink-muted);
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  inset: auto 0 15px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}
.nav-link.is-active {
  color: var(--accent-ink);
}
.nav-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}
.icon-btn,
.lang-btn {
  min-width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--ink-strong);
}
.lang-btn {
  font-size: 12px;
  padding: 0 10px;
}
.icon-btn:hover,
.lang-btn:hover {
  background: var(--accent-soft);
}
.nav-cv {
  font-size: 12px;
  color: var(--ink-strong);
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  white-space: nowrap;
}
.icon-sun {
  display: block;
}
.icon-moon {
  display: none;
}
[data-theme="dark"] .icon-sun {
  display: none;
}
[data-theme="dark"] .icon-moon {
  display: block;
}
.nav-toggle {
  display: none;
}
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 30;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  pointer-events: none;
}
/* Hero: the real portrait is the visual anchor, orbital paths suggest connected systems. */
.hero {
  position: relative;
  overflow: clip;
  padding: 70px 0 86px;
  min-height: min(680px, calc(100dvh - var(--header-h)));
  display: grid;
  align-items: center;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-text {
  position: relative;
  z-index: 1;
}
.eyebrow {
  font: 11px/1.8 var(--font-mono);
  letter-spacing: 0.09em;
  color: var(--ink-faint);
  margin-bottom: 28px;
  max-width: 400px;
}
.hero-name {
  font-size: clamp(56px, 7.2vw, 100px);
  font-weight: 520;
  letter-spacing: -0.065em;
  line-height: 1.03;
  max-width: 650px;
}
.name-line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.06em;
}
.name-word {
  display: block;
}
.name-line:last-child {
  color: var(--accent-ink);
}
.hero-title {
  font-size: clamp(17px, 1.6vw, 22px);
  line-height: 1.55;
  max-width: 340px;
  margin-top: 26px;
  color: var(--ink-muted);
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  border-radius: 999px;
  padding: 14px 22px;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
  transition:
    transform 0.35s var(--ease),
    background 0.25s,
    color 0.25s;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
}
.btn-primary:hover {
  background: var(--accent-strong);
  color: var(--bg);
  transform: translateY(-4px);
}
.btn-ghost {
  border: 1px solid var(--border-strong);
  color: var(--ink-strong);
}
.btn-ghost:hover {
  background: var(--accent-soft);
  transform: translateY(-4px);
}
.btn .icon {
  transition: transform 0.35s var(--ease);
}
.btn:hover .icon {
  transform: translateY(3px);
}
.btn:active {
  transform: scale(0.96);
}
.hero-photo {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 460px;
  perspective: 1000px;
}
.portrait {
  position: relative;
  width: 282px;
  transform: rotate(3deg);
}
.portrait::before {
  content: "";
  position: absolute;
  inset: 18px -18px -18px 18px;
  background: var(--accent-soft);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
}
.portrait img {
  position: relative;
  width: 282px;
  height: 382px;
  object-fit: cover;
  object-position: center 34%;
  border-radius: 6px;
  filter: saturate(0.7);
  box-shadow: 0 24px 50px -30px #24204460;
}
.orbital-frame {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: grid;
  place-items: center;
}
.orbit {
  position: absolute;
  width: 440px;
  height: 440px;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  opacity: 0.6;
}
.orbit-one {
  transform: rotate(-30deg) scaleX(0.74);
}
.orbit-two {
  transform: rotate(38deg) scaleX(0.72);
}
.orbit-three {
  width: 490px;
  height: 490px;
  border-style: dashed;
  opacity: 0.3;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 40px;
  right: 40px;
  height: 1px;
  background: var(--border);
}
/* Profile and section rhythm. Existing section anchors remain stable. */
.section {
  padding: 100px 0;
}
.section-alt {
  background: var(--bg-alt);
}
.section-head {
  margin-bottom: 44px;
}
.section-head .eyebrow {
  display: none;
}
.section-title {
  font-size: clamp(28px, 3.4vw, 44px);
  font-weight: 510;
  letter-spacing: -0.045em;
  line-height: 1.15;
}
.section-title::after {
  content: "";
  display: block;
  width: 48px;
  height: 3px;
  background: var(--accent);
  margin-top: 22px;
  transform-origin: left;
}
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 80px;
}
.about-summary p + p {
  margin-top: 24px;
}
.lead {
  font-size: 20px;
  line-height: 1.75;
}
.hero-quote {
  font-size: 15px;
  margin-bottom: 24px;
  color: var(--ink-muted);
}
.hero-quote em {
  font-style: normal;
  color: var(--accent-ink);
}
.about-interests {
  padding-left: 32px;
  border-left: 1px solid var(--border);
}
.about-interests h3 {
  font: 12px var(--font-mono);
  color: var(--ink-faint);
  margin-bottom: 24px;
}
.interest-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.interest-list li {
  padding: 9px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  background: var(--card-bg);
}
.contact-list {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  padding-bottom: 28px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
}
.contact-list li,
.contact-list a {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--ink-muted);
  font-size: 13px;
}
.contact-list a:hover {
  color: var(--accent-ink);
}
/* Academic path: generous timeline rather than repeated panels. */
.timeline {
  position: relative;
}
.tl-item {
  display: grid;
  grid-template-columns: 210px 30px 1fr;
  gap: 24px;
  position: relative;
  padding-bottom: 48px;
}
.tl-item:last-child {
  padding-bottom: 0;
}
.tl-dates {
  text-align: right;
}
.tl-year {
  font: 13px/1.8 var(--font-mono);
  color: var(--ink-muted);
  display: block;
}
.tl-tag {
  display: inline-block;
  font-size: 11px;
  color: var(--accent-ink);
  margin-top: 8px;
}
.tl-track {
  position: relative;
  display: flex;
  justify-content: center;
}
.tl-node {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 7px;
}
.tl-track::after {
  content: "";
  position: absolute;
  top: 24px;
  bottom: -28px;
  width: 1px;
  background: var(--border-strong);
  transform-origin: top;
}
.tl-item:last-child .tl-track::after {
  display: none;
}
.tl-degree {
  font-size: 22px;
  letter-spacing: -0.025em;
  font-weight: 550;
}
.tl-school {
  font-size: 14px;
  color: var(--ink-muted);
  margin-top: 8px;
}
.tl-points {
  margin-top: 18px;
}
.tl-points li {
  padding-left: 18px;
  position: relative;
  margin-top: 8px;
  font-size: 14px;
}
.tl-points li::before {
  content: "+";
  position: absolute;
  left: 0;
  color: var(--accent);
}
/* Research gets a sticky section title and a sequential, numbered reading path. */
#research > .container {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 72px;
  align-items: start;
}
#research .section-head {
  position: sticky;
  top: 130px;
}
#research .cards {
  display: flex;
  flex-direction: column;
  gap: 26px;
  counter-reset: research;
}
.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}
.card {
  position: relative;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card-bg);
  transition:
    border-color 0.3s,
    box-shadow 0.3s;
}
.card:hover {
  border-color: var(--accent);
  box-shadow: 0 16px 32px -26px var(--accent);
}
#research .card {
  padding: 38px 36px 36px;
}
#research .card::before {
  counter-increment: research;
  content: counter(research, decimal-leading-zero);
  display: block;
  font: 48px/1 var(--font-mono);
  letter-spacing: -0.08em;
  color: var(--accent);
  margin-bottom: 32px;
}
.card-head {
  display: flex;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.card-title {
  flex-basis: 100%;
  font-size: 23px;
  font-weight: 550;
  letter-spacing: -0.035em;
  line-height: 1.3;
  margin-bottom: 8px;
}
.card-role {
  font-size: 13px;
  color: var(--ink-muted);
}
.card-role em {
  font-style: normal;
}
.card-meta {
  font: 12px var(--font-mono);
  color: var(--ink-faint);
  margin: 16px 0;
}
.card-points {
  margin-top: 16px;
}
.card-points li {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 12px;
}
.card-link {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
}
.project-subsection {
  margin-top: 70px;
}
.project-subsection-head {
  margin-bottom: 28px;
  max-width: 700px;
}
.project-subsection-intro {
  margin-top: 16px;
  color: var(--ink-muted);
}
.project-subsection .eyebrow {
  display: none;
}
.project-subsection .section-title {
  font-size: 30px;
}
/* Publications use a two-column bibliography, with numerals as finding aids. */
.sub-head {
  font-size: 20px;
  font-weight: 550;
  letter-spacing: -0.02em;
  margin: 40px 0 24px;
}
.pub-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}
#publications {
  counter-reset: pub;
}
.pub-item {
  position: relative;
  padding: 30px 0 20px 46px;
  border-top: 1px solid var(--border-strong);
}
.pub-item::before {
  counter-increment: pub;
  content: counter(pub, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 30px;
  font: 16px var(--font-mono);
  color: var(--accent-ink);
}
.pub-text {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.9;
}
.pub-text em {
  color: var(--ink-strong);
}
.pub-text .fa {
  color: var(--accent-ink);
}
.pub-doi {
  display: inline-block;
  margin-top: 18px;
  font: 11px/1.7 var(--font-mono);
  color: var(--ink-muted);
  overflow-wrap: anywhere;
}
.pub-doi:hover {
  color: var(--accent-ink);
  text-decoration: underline;
}
.badge {
  display: inline-block;
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font: 10px/1.5 var(--font-mono);
  color: var(--ink-muted);
  background: var(--bg);
  white-space: nowrap;
}
.badge-rose,
.badge-indigo {
  color: var(--accent-ink);
  background: var(--accent-soft);
  border-color: transparent;
}
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 40px 60px;
}
.skill-group {
  padding: 28px 0;
  border-top: 1px solid var(--border);
}
.skill-label {
  font: 12px var(--font-mono);
  color: var(--ink-muted);
  margin-bottom: 22px;
}
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip {
  padding: 8px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  font-size: 13px;
  transition:
    transform 0.3s var(--ease),
    background 0.3s;
}
.chip:hover {
  transform: translateY(-4px);
  background: var(--accent-soft);
}
.honor-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.honor-item {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 24px;
  padding: 26px;
  background: var(--card-bg);
  border-radius: 6px;
}
.honor-title {
  font-size: 18px;
  font-weight: 550;
  letter-spacing: -0.025em;
}
.honor-org {
  font-size: 13px;
  color: var(--ink-muted);
  margin-top: 10px;
}
.honor-year {
  font: 12px var(--font-mono);
  color: var(--accent-ink);
  white-space: nowrap;
}
.site-footer {
  padding: 64px 0 94px;
  border-top: 1px solid var(--border);
  background: var(--bg);
}
.footer-inner {
  text-align: left;
}
.footer-name {
  font-size: clamp(32px, 5vw, 64px);
  font-weight: 500;
  letter-spacing: -0.05em;
  color: var(--ink-strong);
}
.footer-links {
  margin-top: 24px;
}
.footer-sep {
  margin: 0 15px;
  color: var(--ink-faint);
}
.footer-copy {
  margin-top: 28px;
  font: 11px var(--font-mono);
  color: var(--ink-muted);
}
.back-to-top,
.motion-toggle {
  position: fixed;
  bottom: 20px;
  z-index: 30;
  background: var(--card-bg);
  border: 1px solid var(--border-strong);
  color: var(--ink-strong);
  border-radius: 999px;
  height: 42px;
}
.back-to-top {
  right: 24px;
  width: 42px;
  display: grid;
  place-items: center;
  visibility: hidden;
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 0.3s,
    transform 0.3s,
    visibility 0.3s;
}
.back-to-top.is-visible {
  visibility: visible;
  opacity: 1;
  transform: none;
}
.motion-toggle {
  left: 24px;
  font: 11px var(--font-mono);
  padding: 0 15px;
}
.motion-toggle:hover,
.back-to-top:hover {
  background: var(--accent-soft);
}
html[data-lang="zh-CN"] .hero-name {
  letter-spacing: -0.03em;
  font-weight: 550;
}
html[data-lang="zh-CN"] .hero-title {
  max-width: 380px;
}
html[data-lang="zh-CN"] .section-title {
  letter-spacing: 0;
}
html[data-lang="zh-CN"] .card-title {
  line-height: 1.5;
}
@media (min-width: 1400px) {
  .hero {
    min-height: 680px;
  }
}
@media (max-width: 1190px) {
  .brand-name {
    display: none;
  }
  .nav-inner {
    gap: 16px;
  }
  .nav-list {
    gap: 15px;
  }
  .hero-grid {
    gap: 32px;
  }
  .hero-photo {
    transform: scale(0.92);
  }
  .hero-name {
    font-size: 80px;
  }
  #research > .container {
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 40px;
  }
}
@media (max-width: 1023px) {
  :root {
    --header-h: 68px;
  }
  .container {
    width: calc(100% - 48px);
  }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 999px;
  }
  .nav-toggle-bar {
    display: block;
    width: 17px;
    height: 1px;
    background: var(--ink-strong);
    transition:
      transform 0.3s,
      opacity 0.3s;
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }
  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }
  .brand-name {
    display: block;
  }
  .nav-controls {
    margin-left: auto;
  }
  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    margin: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-12px);
    transition:
      opacity 0.25s,
      transform 0.3s var(--ease),
      visibility 0.25s;
  }
  .site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: none;
  }
  .nav-list {
    padding: 20px 24px 28px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px 24px;
  }
  .nav-link {
    font-size: 16px;
    padding: 10px 0;
  }
  .nav-link::after {
    bottom: 4px;
    right: 80%;
  }
  .hero {
    padding: 60px 0 72px;
  }
  .hero-name {
    font-size: 70px;
  }
  .hero-grid {
    gap: 24px;
    grid-template-columns: 1.1fr 1fr;
  }
  .hero-photo {
    min-height: 390px;
  }
  .portrait,
  .portrait img {
    width: 230px;
  }
  .portrait img {
    height: 320px;
  }
  .orbit {
    width: 330px;
    height: 330px;
  }
  .orbit-three {
    width: 380px;
    height: 380px;
  }
  .hero-cta {
    gap: 10px;
  }
  .btn {
    padding: 12px 16px;
    font-size: 12px;
  }
  .about-grid {
    gap: 40px;
  }
  .tl-item {
    grid-template-columns: 170px 20px 1fr;
    gap: 18px;
  }
  .section {
    padding: 80px 0;
  }
  #research > .container {
    display: block;
  }
  #research .section-head {
    position: static;
  }
  #research .cards {
    gap: 24px;
  }
  .card-title {
    font-size: 21px;
  }
  .cards {
    gap: 18px;
  }
  .card {
    padding: 24px;
  }
  .pub-list {
    gap: 26px;
  }
}
@media (max-width: 767px) {
  .container {
    width: calc(100% - 40px);
  }
  .nav-cv {
    display: none;
  }
  .hero {
    padding: 42px 0 48px;
    min-height: 0;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-name {
    font-size: clamp(58px, 16vw, 82px);
  }
  .hero-title {
    font-size: 17px;
    margin-top: 22px;
    max-width: 300px;
  }
  .hero .eyebrow {
    font-size: 10px;
    max-width: 300px;
    margin-bottom: 24px;
  }
  .hero-cta {
    margin-top: 24px;
  }
  .hero-photo {
    transform: none;
    min-height: 380px;
    max-width: 100%;
    overflow: clip;
  }
  .portrait,
  .portrait img {
    width: 232px;
  }
  .portrait img {
    height: 310px;
  }
  .orbit {
    width: 320px;
    height: 320px;
  }
  .orbit-three {
    width: 360px;
    height: 360px;
  }
  .hero::after {
    left: 20px;
    right: 20px;
  }
  .section {
    padding: 62px 0;
  }
  .section-head {
    margin-bottom: 30px;
  }
  .section-title {
    font-size: 31px;
  }
  .about-grid,
  .cards,
  .pub-list,
  .skills-grid,
  .honor-list {
    grid-template-columns: 1fr;
  }
  .about-grid {
    gap: 32px;
  }
  .about-interests {
    padding-left: 0;
    border-left: 0;
  }
  .lead {
    font-size: 18px;
  }
  .contact-list {
    gap: 14px;
    font-size: 12px;
    display: grid;
  }
  .tl-item {
    grid-template-columns: 18px minmax(0, 1fr);
    gap: 10px;
    padding-bottom: 38px;
  }
  .tl-dates {
    grid-column: 2;
    text-align: left;
  }
  .tl-track {
    grid-column: 1;
    grid-row: 1/3;
  }
  .tl-body {
    grid-column: 2;
  }
  .tl-degree {
    font-size: 21px;
  }
  #research .card {
    padding: 28px;
  }
  #research .card::before {
    font-size: 36px;
    margin-bottom: 22px;
  }
  .pub-item {
    padding-top: 24px;
  }
  .pub-item::before {
    top: 24px;
  }
  .pub-list {
    gap: 20px;
  }
  .honor-item {
    padding: 22px;
  }
  .project-subsection {
    margin-top: 48px;
  }
  .project-subsection .section-title {
    font-size: 26px;
  }
  .skills-grid {
    gap: 16px;
  }
  .motion-toggle {
    left: 14px;
    bottom: 14px;
    height: 38px;
  }
  .back-to-top {
    right: 14px;
    bottom: 14px;
    height: 38px;
    width: 38px;
  }
  .brand-name {
    font-size: 13px;
  }
  .nav-inner {
    gap: 10px;
  }
  .site-footer {
    padding-bottom: 90px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}
html[data-motion="off"] {
  scroll-behavior: auto;
}
html[data-motion="off"] *,
html[data-motion="off"] *::before,
html[data-motion="off"] *::after {
  animation: none !important;
  transition: none !important;
}
@media (prefers-reduced-transparency: reduce) {
  .site-header {
    background: var(--bg);
    backdrop-filter: none;
  }
}
@media print {
  .site-header,
  .motion-toggle,
  .back-to-top,
  .hero-cta,
  .reading-progress,
  .orbital-frame {
    display: none;
  }
  .hero,
  .section {
    padding: 20px 0;
    min-height: 0;
  }
  .container {
    width: 100%;
  }
  body {
    font-size: 11px;
    color: #20212c;
    background: #fafafa;
  }
  * {
    opacity: 1 !important;
    transform: none !important;
    visibility: visible !important;
  }
  .hero-grid {
    grid-template-columns: 1fr 1fr;
  }
  .hero-name {
    font-size: 42px;
  }
  .hero-photo {
    min-height: 0;
  }
  .portrait img {
    width: 140px;
    height: 190px;
  }
  .section-head {
    position: static !important;
  }
  .card,
  .pub-item {
    break-inside: avoid;
  }
}