/* -------------------------------------------------------
   Apple-inspired academic portfolio
   ------------------------------------------------------- */

:root {
  --ink: #111113;
  --text: #3f3f44;
  --muted: #73737a;
  --line: #e6e6e9;
  --soft: #f5f5f7;
  --soft-2: #fbfbfc;
  --sidebar: 220px;
  --radius: 22px;
  --blue: #0071e3;
  --ease: cubic-bezier(.22,.61,.36,1);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

.sidebar {
  position: fixed;
  z-index: 40;
  inset: 0 auto 0 0;
  width: var(--sidebar);
  padding: 34px 19px 28px;
  background: rgba(255,255,255,.94);
  border-right: 1px solid #e8e8eb;
  backdrop-filter: blur(22px) saturate(160%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.mark {
  width: 46px;
  height: 46px;
  margin-left: 15px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: var(--ink);
  color: white;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -.04em;
  box-shadow: 0 10px 25px rgba(0,0,0,.12);
}

.side-nav {
  margin-top: 44px;
  display: grid;
  gap: 8px;
}

.nav-item {
  min-height: 45px;
  padding: 0 15px;
  display: flex;
  align-items: center;
  gap: 16px;
  border-radius: 12px;
  color: #56565c;
  font-size: 14px;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}

.nav-item:hover {
  color: var(--ink);
  background: #f5f5f7;
  transform: translateX(2px);
}

.nav-item.active {
  color: var(--ink);
  background: #f3f3f5;
  font-weight: 560;
}

.nav-item svg,
.sidebar-social svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-item:first-child svg path:first-child { fill: none; }

.sidebar-social {
  padding-left: 15px;
  display: flex;
  gap: 20px;
}

.sidebar-social a {
  color: #55555b;
  transition: color .2s ease, transform .2s ease;
}

.sidebar-social a:hover {
  color: var(--ink);
  transform: translateY(-2px);
}

.mobile-menu { display: none; }

.page {
  margin-left: var(--sidebar);
  overflow: hidden;
}

.hero {
  position: relative;
  min-height: 640px;
  display: grid;
  grid-template-columns: 1.04fr .96fr;
  align-items: center;
  padding: 82px clamp(56px, 7vw, 116px);
  background:
    radial-gradient(circle at 84% 17%, rgba(226,230,238,.92), transparent 31%),
    linear-gradient(180deg, #fafbfc 0%, #f4f5f7 72%, #f5f5f7 100%);
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: rgba(0,0,0,.035);
}

.eyebrow,
.section-kicker {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1;
  font-weight: 590;
  letter-spacing: .01em;
}

.hero h1 {
  max-width: 670px;
  margin: 0;
  font-size: clamp(58px, 6.2vw, 92px);
  line-height: .96;
  letter-spacing: -.055em;
  font-weight: 700;
}

.hero-text {
  max-width: 570px;
  margin: 26px 0 0;
  color: #55555b;
  font-size: clamp(18px, 1.65vw, 23px);
  line-height: 1.5;
  letter-spacing: -.015em;
}

.primary-button {
  min-height: 52px;
  width: fit-content;
  margin-top: 28px;
  padding: 0 20px 0 22px;
  display: inline-flex;
  align-items: center;
  gap: 22px;
  border-radius: 11px;
  color: white;
  background: var(--ink);
  font-size: 14px;
  font-weight: 550;
  box-shadow: 0 13px 30px rgba(0,0,0,.13);
  transition: transform .22s var(--ease), box-shadow .22s var(--ease);
}

.primary-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 17px 36px rgba(0,0,0,.17);
}

.hero-device {
  position: relative;
  height: 500px;
  min-width: 470px;
}

.device-glow {
  position: absolute;
  width: 540px;
  height: 430px;
  right: -50px;
  top: -5px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.95), rgba(220,225,234,.32) 48%, transparent 70%);
}

.laptop {
  position: absolute;
  right: -108px;
  top: 54px;
  width: 470px;
  height: 334px;
  transform: perspective(1100px) rotateY(-16deg) rotateX(4deg) rotateZ(-4deg);
}

.laptop-lid {
  position: absolute;
  inset: 0 0 29px;
  overflow: hidden;
  border: 1px solid rgba(120,120,130,.23);
  border-radius: 20px 20px 13px 13px;
  background:
    linear-gradient(120deg, rgba(255,255,255,.93), rgba(226,228,233,.96) 40%, rgba(195,198,205,.98) 100%);
  box-shadow:
    inset 0 0 35px rgba(255,255,255,.46),
    0 28px 58px rgba(59,64,75,.18);
}

.lid-shine {
  position: absolute;
  width: 140%;
  height: 32%;
  left: -20%;
  top: 0;
  background: linear-gradient(180deg, rgba(255,255,255,.7), transparent);
  transform: rotate(-8deg);
}

.device-mark {
  position: absolute;
  left: 50%;
  top: 49%;
  transform: translate(-50%,-50%);
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  color: rgba(105,108,114,.54);
  background: rgba(255,255,255,.22);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.48);
  font-size: 14px;
  font-weight: 700;
}

.laptop-base {
  position: absolute;
  z-index: -1;
  left: 3%;
  right: -5%;
  bottom: 6px;
  height: 40px;
  border-radius: 5px 5px 15px 15px;
  background: linear-gradient(180deg, #d2d4da, #a9acb3 90%);
  box-shadow: 0 13px 20px rgba(0,0,0,.12);
}

.mouse {
  position: absolute;
  left: 72px;
  top: 364px;
  width: 170px;
  height: 52px;
  border: 1px solid rgba(130,133,140,.24);
  border-radius: 54% 54% 50% 50% / 76% 76% 38% 38%;
  transform: perspective(500px) rotateX(55deg) rotateZ(-4deg);
  background: linear-gradient(180deg, #fff, #dadde3);
  box-shadow: 0 11px 23px rgba(0,0,0,.09);
}

.mouse-seam {
  position: absolute;
  left: 50%;
  top: 4px;
  width: 1px;
  height: 13px;
  background: rgba(100,100,106,.17);
}

.surface-shadow {
  position: absolute;
  height: 25px;
  border-radius: 50%;
  background: rgba(91,95,105,.17);
  filter: blur(13px);
}

.laptop-shadow {
  width: 420px;
  right: -80px;
  bottom: 60px;
}

.mouse-shadow {
  width: 155px;
  left: 80px;
  bottom: 73px;
}

.about {
  min-height: 410px;
  padding: 64px clamp(55px, 7vw, 116px);
  display: grid;
  grid-template-columns: .9fr 1.35fr;
  gap: clamp(44px, 6vw, 90px);
  align-items: center;
  background: white;
}

.about-intro { max-width: 480px; }

.about h2,
.content-section h2,
.contact-card h2 {
  margin: 0;
  font-size: clamp(40px, 4.5vw, 62px);
  line-height: 1;
  letter-spacing: -.048em;
  font-weight: 690;
}

.about-intro > p:not(.section-kicker) {
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
}

.inline-link {
  display: inline-flex;
  gap: 9px;
  align-items: center;
  margin-top: 25px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 540;
}

.inline-link span {
  font-size: 21px;
  line-height: 1;
  transition: transform .2s ease;
}

.inline-link:hover span { transform: translateX(4px); }

.topic-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.topic-card {
  min-height: 263px;
  padding: 27px 18px 22px;
  border: 1px solid #e7e7ea;
  border-radius: 13px;
  background: rgba(255,255,255,.9);
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,.025);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.topic-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 45px rgba(0,0,0,.06);
}

.topic-card h3 {
  margin: 12px 0 9px;
  font-size: 15px;
  line-height: 1.25;
  font-weight: 650;
}

.topic-card p {
  margin: 0 auto;
  max-width: 190px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.topic-icon {
  height: 94px;
  display: grid;
  place-items: center;
}

.chart-icon svg {
  width: 98px;
  height: 76px;
  fill: #46464b;
  stroke: #46464b;
  stroke-width: 1.5;
}

.chart-icon .graph-line { fill: none; stroke-width: 2; }

.dots-icon {
  width: 92px;
  margin: auto;
  grid-template-columns: repeat(3, 12px);
  grid-template-rows: repeat(3, 12px);
  align-content: center;
  justify-content: center;
  gap: 9px;
}

.dots-icon span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #3e3e43;
}

.dots-icon .hollow {
  background: transparent;
  border: 1.5px solid #3e3e43;
}

.venn-icon {
  position: relative;
  width: 105px;
  margin: auto;
}

.venn-icon i {
  position: absolute;
  width: 54px;
  height: 54px;
  border: 1.5px solid #3e3e43;
  border-radius: 50%;
}

.venn-icon i:nth-child(1) { left: 25px; top: 2px; }
.venn-icon i:nth-child(2) { left: 10px; top: 35px; }
.venn-icon i:nth-child(3) { right: 10px; top: 35px; }

.content-section {
  padding: 108px clamp(55px, 7vw, 116px);
}

.soft-section { background: var(--soft); }

.section-header {
  max-width: 800px;
  margin-bottom: 56px;
}

.section-header.compact { max-width: 670px; }

.section-header > p:last-child {
  max-width: 620px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.55;
}

.research-panels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.research-panel {
  min-height: 520px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(0,0,0,.055);
  border-radius: 22px;
  background: white;
  box-shadow: 0 18px 45px rgba(0,0,0,.045);
  transition: transform .32s var(--ease), box-shadow .32s var(--ease);
}

.research-panel:hover {
  transform: translateY(-6px);
  box-shadow: 0 28px 60px rgba(0,0,0,.075);
}

.panel-number {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.panel-visual {
  position: relative;
  height: 240px;
  display: grid;
  place-items: center;
}

.panel-copy { margin-top: auto; }

.panel-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.panel-copy h3 {
  margin: 8px 0 12px;
  font-size: 30px;
  line-height: 1.05;
  letter-spacing: -.035em;
}

.panel-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.58;
}

.dual-visual .ring {
  position: absolute;
  width: 77px;
  height: 77px;
  border-radius: 50%;
  border: 1.4px solid #55555b;
}

.dual-visual .r1 { transform: translateX(-60px); }
.dual-visual .r2 { transform: translateX(60px); }
.dual-visual .bridge { font-size: 33px; color: #55555b; }

.process-visual span {
  position: absolute;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #3f3f44;
}

.process-visual span:nth-child(1) { left: 24%; top: 36%; }
.process-visual span:nth-child(2) { left: 43%; top: 24%; }
.process-visual span:nth-child(3) { left: 61%; top: 42%; }
.process-visual span:nth-child(4) { left: 38%; top: 63%; }
.process-visual span:nth-child(5) { left: 68%; top: 68%; }

.process-visual i {
  position: absolute;
  width: 90px;
  height: 1px;
  background: #b7b7bd;
  transform-origin: left center;
}

.process-visual i:nth-of-type(1) { left: 27%; top: 38%; transform: rotate(-17deg); }
.process-visual i:nth-of-type(2) { left: 45%; top: 27%; transform: rotate(35deg); }
.process-visual i:nth-of-type(3) { left: 40%; top: 62%; transform: rotate(5deg); }

.projection-plane {
  width: 170px;
  height: 94px;
  border: 1px solid rgba(0,113,227,.35);
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(223,239,255,.9), rgba(255,255,255,.7));
  transform: skewY(-12deg);
}

.projection-visual .dot {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blue);
}

.projection-visual .d1 { left: 27%; top: 37px; }
.projection-visual .d2 { right: 27%; top: 44px; }
.projection-visual .d3 { left: 49%; bottom: 35px; }

.projection-visual .ray {
  position: absolute;
  width: 95px;
  height: 1px;
  background: rgba(0,113,227,.36);
  transform-origin: left center;
}

.projection-visual .ray1 { left: 29%; top: 48px; transform: rotate(35deg); }
.projection-visual .ray2 { right: 31%; top: 51px; transform: rotate(145deg); }

.publication-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 18px;
}

.paper-card {
  min-height: 350px;
  position: relative;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: 22px;
  background: #f4f4f6;
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.paper-card:nth-child(3) {
  background: linear-gradient(145deg, #f0f5fb, #e3ebf5);
}

.paper-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 25px 55px rgba(0,0,0,.07);
}

.featured-paper {
  grid-row: span 2;
  min-height: 718px;
  color: white;
  background:
    radial-gradient(circle at 76% 15%, rgba(113,147,220,.45), transparent 28%),
    radial-gradient(circle at 20% 90%, rgba(122,99,205,.25), transparent 34%),
    #101116;
}

.paper-meta {
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.featured-paper .paper-meta { color: rgba(255,255,255,.52); }

.paper-question {
  margin: 0 0 10px;
  color: var(--blue);
  font-size: 15px;
  font-weight: 600;
}

.featured-paper .paper-question { color: #9bbcff; }

.paper-body h3 {
  max-width: 600px;
  margin: 0;
  font-size: clamp(29px, 3.4vw, 46px);
  line-height: 1.05;
  letter-spacing: -.04em;
}

.featured-paper .paper-body h3 {
  font-size: clamp(41px, 4.9vw, 62px);
}

.paper-body > p:last-child {
  max-width: 560px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
}

.featured-paper .paper-body > p:last-child {
  color: rgba(255,255,255,.58);
}

.paper-card > a {
  position: absolute;
  right: 24px;
  top: 24px;
  width: 37px;
  height: 37px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(255,255,255,.76);
}

.featured-paper > a {
  color: white;
  background: rgba(255,255,255,.12);
}

.publication-list {
  margin-top: 78px;
  border-top: 1px solid var(--line);
}

.pub-row {
  min-height: 118px;
  padding: 23px 0;
  display: grid;
  grid-template-columns: 75px 1fr 30px;
  gap: 22px;
  border-bottom: 1px solid var(--line);
  align-items: start;
}

.pub-row .year,
.arrow {
  color: var(--muted);
  font-size: 13px;
}

.pub-row h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.35;
  letter-spacing: -.015em;
}

.pub-row p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.talk-list { border-top: 1px solid #dadadd; }

.talk-row {
  min-height: 125px;
  padding: 25px 0;
  display: grid;
  grid-template-columns: 85px 1fr;
  gap: 24px;
  border-bottom: 1px solid #dadadd;
}

.talk-row > span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.talk-row h3 {
  margin: 0;
  font-size: 20px;
  line-height: 1.3;
}

.talk-row p {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.dark-section {
  color: white;
  background:
    radial-gradient(circle at 74% -10%, rgba(92,112,165,.30), transparent 29%),
    #0b0b0d;
}

.section-kicker.light { color: rgba(255,255,255,.45); }

.honor-list { border-top: 1px solid rgba(255,255,255,.17); }

.honor-row {
  min-height: 105px;
  padding: 25px 0;
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: 26px;
  align-items: center;
  border-bottom: 1px solid rgba(255,255,255,.17);
}

.honor-year {
  color: rgba(255,255,255,.48);
  font-size: 13px;
}

.honor-row h3 {
  margin: 0;
  max-width: 950px;
  font-size: 21px;
  line-height: 1.3;
  font-weight: 560;
  letter-spacing: -.015em;
}

.contact-section {
  padding: 88px clamp(55px, 7vw, 116px);
  background: white;
}

.contact-card {
  min-height: 420px;
  padding: clamp(42px, 6vw, 72px);
  border-radius: 26px;
  background:
    radial-gradient(circle at 85% 20%, rgba(255,255,255,.96), transparent 22%),
    linear-gradient(145deg, #f4f5f7 0%, #e7eaf0 100%);
}

.contact-card h2 {
  font-size: clamp(48px, 6.4vw, 82px);
}

.contact-card > p:not(.section-kicker) {
  max-width: 550px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.55;
}

.contact-actions {
  display: flex;
  align-items: center;
  gap: 28px;
}

.contact-actions .inline-link { margin-top: 28px; }

footer {
  min-height: 72px;
  padding: 0 clamp(55px, 7vw, 116px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 12px;
}

/* reveal */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .75s var(--ease), transform .75s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* tablet */
@media (max-width: 1050px) {
  :root { --sidebar: 190px; }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 100px;
  }

  .hero-device {
    min-width: 0;
    height: 410px;
    margin-top: -5px;
  }

  .laptop {
    right: 0;
    top: 30px;
    width: 430px;
    height: 304px;
  }

  .mouse {
    left: 18%;
    top: 305px;
  }

  .about {
    grid-template-columns: 1fr;
  }

  .about-intro { max-width: 680px; }

  .research-panels { grid-template-columns: 1fr; }
  .research-panel {
    min-height: 410px;
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    column-gap: 25px;
  }
  .panel-number { grid-column: 1 / -1; }
  .panel-visual { height: 260px; }
  .panel-copy { margin-top: 0; align-self: end; padding-bottom: 20px; }

  .publication-grid { grid-template-columns: 1fr; }
  .featured-paper { grid-row: auto; min-height: 600px; }
}

/* mobile */
@media (max-width: 760px) {
  :root { --sidebar: 0px; }

  html { scroll-padding-top: 70px; }

  .sidebar {
    z-index: 50;
    width: 100%;
    height: auto;
    min-height: 0;
    max-height: 0;
    padding: 0 18px;
    overflow: hidden;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    transition: max-height .32s var(--ease), padding .32s var(--ease);
  }

  .sidebar.open {
    max-height: 650px;
    padding-top: 64px;
    padding-bottom: 22px;
  }

  .mark { display: none; }
  .side-nav { margin-top: 0; }
  .nav-item { min-height: 46px; }
  .sidebar-social { margin-top: 18px; padding-left: 15px; }

  .mobile-menu {
    position: fixed;
    z-index: 60;
    right: 15px;
    top: 14px;
    width: 42px;
    height: 42px;
    border: 0;
    border-radius: 50%;
    background: rgba(255,255,255,.82);
    backdrop-filter: blur(20px);
    display: grid;
    place-content: center;
    gap: 5px;
    box-shadow: 0 5px 18px rgba(0,0,0,.07);
  }

  .mobile-menu span {
    width: 18px;
    height: 1px;
    background: var(--ink);
    transition: transform .22s ease;
  }

  .mobile-menu[aria-expanded="true"] span:first-child {
    transform: translateY(3px) rotate(45deg);
  }

  .mobile-menu[aria-expanded="true"] span:last-child {
    transform: translateY(-3px) rotate(-45deg);
  }

  .page { margin-left: 0; }

  .hero {
    padding: 90px 24px 38px;
  }

  .hero h1 {
    font-size: clamp(53px, 15.8vw, 74px);
  }

  .hero-text { font-size: 18px; }

  .hero-device {
    height: 320px;
    margin-top: 5px;
  }

  .device-glow {
    width: 420px;
    height: 320px;
    right: -120px;
  }

  .laptop {
    right: -82px;
    top: 45px;
    width: 330px;
    height: 233px;
  }

  .mouse {
    left: 12px;
    top: 242px;
    width: 128px;
    height: 42px;
  }

  .laptop-shadow {
    width: 290px;
    right: -40px;
    bottom: 30px;
  }

  .mouse-shadow {
    width: 110px;
    left: 15px;
    bottom: 34px;
  }

  .about,
  .content-section,
  .contact-section {
    padding-left: 24px;
    padding-right: 24px;
  }

  .about { padding-top: 72px; padding-bottom: 76px; }

  .topic-cards { grid-template-columns: 1fr; }
  .topic-card {
    min-height: 220px;
    display: grid;
    grid-template-columns: 110px 1fr;
    grid-template-rows: auto auto;
    column-gap: 12px;
    text-align: left;
    align-items: center;
  }

  .topic-icon { grid-row: 1 / span 2; }
  .topic-card h3 { align-self: end; margin: 0 0 6px; }
  .topic-card p { margin: 0; max-width: 100%; align-self: start; }

  .content-section { padding-top: 82px; padding-bottom: 82px; }

  .research-panel {
    min-height: 500px;
    display: flex;
  }

  .panel-visual { height: 220px; }
  .panel-copy { margin-top: auto; }

  .paper-card,
  .featured-paper { min-height: 520px; }

  .featured-paper .paper-body h3 { font-size: 39px; }

  .pub-row {
    grid-template-columns: 55px 1fr;
    gap: 14px;
  }

  .pub-row .arrow { display: none; }

  .talk-row {
    grid-template-columns: 55px 1fr;
    gap: 15px;
  }

  .honor-row {
    grid-template-columns: 58px 1fr;
    gap: 15px;
  }

  .contact-card { padding: 38px 28px; }
  .contact-card h2 { font-size: 54px; }

  .contact-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 0;
  }

  footer {
    min-height: 96px;
    padding: 25px 24px;
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}


/* --- CV + advanced mathematical hero visual --- */
.cv-chip {
  min-width: 34px;
  height: 26px;
  padding: 0 8px;
  display: inline-grid;
  place-items: center;
  border-radius: 8px;
  background: #f2f2f4;
  color: #3f3f44 !important;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .02em;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}

.hero-cv { margin-top: 28px; }

.hero-math {
  position: relative;
  min-width: 470px;
  height: 535px;
  display: grid;
  place-items: center;
}

.math-glow {
  position: absolute;
  width: 580px;
  height: 500px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 45%, rgba(255,255,255,.96), rgba(223,228,237,.54) 43%, rgba(218,223,232,.18) 63%, transparent 73%);
  filter: blur(4px);
}

.math-scene {
  position: relative;
  z-index: 2;
  width: min(100%, 690px);
  overflow: visible;
  filter: drop-shadow(0 28px 38px rgba(62,70,83,.08));
}

.contour {
  fill: none;
  stroke: url(#inkFade);
  stroke-width: 1.35;
}

.ridge {
  fill: none;
  stroke: rgba(48,52,60,.78);
  stroke-width: 3;
  stroke-linecap: round;
}

.plane {
  stroke: rgba(107,125,151,.28);
  stroke-width: 1.1;
  filter: url(#mathShadow);
}

.plane-a { fill: url(#planeFill); }
.plane-b { fill: rgba(255,255,255,.16); }

.dual-line {
  stroke: rgba(70,77,89,.34);
  stroke-width: 1.1;
  stroke-dasharray: 5 7;
}

.graph-lines line {
  stroke: rgba(74,81,92,.28);
  stroke-width: 1.2;
}

.graph-nodes .node {
  fill: url(#nodeGlow);
  stroke: rgba(255,255,255,.9);
  stroke-width: 1.2;
  transform-box: fill-box;
  transform-origin: center;
  animation: nodePulse 4.8s ease-in-out infinite;
}

.graph-nodes .n2 { animation-delay: -.7s; }
.graph-nodes .n3 { animation-delay: -1.4s; }
.graph-nodes .n4 { animation-delay: -2.1s; }
.graph-nodes .n5 { animation-delay: -2.8s; }
.graph-nodes .n6 { animation-delay: -3.5s; }
.graph-nodes .n7 { animation-delay: -4.2s; }

.projection-rays line {
  stroke: rgba(0,113,227,.28);
  stroke-width: 1.25;
}

.projection-rays circle {
  fill: #0071e3;
  opacity: .72;
}

.opt-ring {
  fill: rgba(255,255,255,.36);
  stroke: rgba(0,113,227,.38);
  stroke-width: 1.5;
  animation: optPulse 3.8s ease-in-out infinite;
}

.opt-dot {
  fill: #0071e3;
  filter: drop-shadow(0 0 8px rgba(0,113,227,.22));
}

.svg-labels rect {
  fill: rgba(255,255,255,.68);
  stroke: rgba(255,255,255,.88);
  stroke-width: 1;
  filter: drop-shadow(0 7px 18px rgba(70,75,86,.08));
}

.svg-labels text {
  fill: #6d7179;
  font-size: 12px;
  font-weight: 600;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}

@keyframes nodePulse {
  0%,100% { transform: scale(1); opacity: .82; }
  50% { transform: scale(1.18); opacity: 1; }
}

@keyframes optPulse {
  0%,100% { transform: scale(1); transform-origin: 353px 350px; opacity: .75; }
  50% { transform: scale(1.16); transform-origin: 353px 350px; opacity: 1; }
}

.split-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(54px, 7vw, 100px);
}

.split-block h2 {
  margin: 0;
  font-size: clamp(40px, 4.5vw, 62px);
  line-height: 1;
  letter-spacing: -.048em;
}

.split-lede {
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.65;
}

.clean-list {
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
  border-top: 1px solid var(--line);
}

.clean-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.clean-list li span {
  display: inline-block;
  min-width: 82px;
  color: var(--ink);
  font-weight: 650;
}

footer {
  flex-wrap: wrap;
}

@media (max-width: 1050px) {
  .hero-math {
    min-width: 0;
    height: 470px;
    margin-top: 8px;
  }

  .math-scene { width: min(100%, 650px); }

  .split-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 0;
  }

  .hero-cv { margin-top: 18px; }

  .hero-math {
    height: 370px;
    margin-top: 12px;
  }

  .math-glow {
    width: 430px;
    height: 360px;
  }

  .svg-labels text { font-size: 10px; }
}

/* Hide legacy device mockup rules if present */
.hero-device, .laptop, .mouse, .device-glow, .surface-shadow { display: none !important; }


/* --- compact About strip --- */
.mini-about {
  padding: 72px clamp(55px, 7vw, 116px) 78px;
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.mini-about-inner {
  max-width: 1180px;
}

.mini-about-grid {
  display: grid;
  grid-template-columns: .95fr 1.05fr;
  gap: clamp(52px, 7vw, 96px);
  align-items: start;
}

.mini-about h2 {
  margin: 0;
  font-size: clamp(38px, 4.2vw, 58px);
  line-height: 1.02;
  letter-spacing: -.045em;
  font-weight: 680;
}

.mini-about-copy {
  max-width: 650px;
  padding-top: 4px;
}

.mini-about-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.68;
  letter-spacing: -.01em;
}

.mini-about-copy .inline-link {
  margin-top: 20px;
}

@media (max-width: 760px) {
  .mini-about {
    padding: 62px 24px 66px;
  }

  .mini-about-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .mini-about h2 {
    font-size: 42px;
  }

  .mini-about-copy p {
    font-size: 16px;
  }
}


/* --- publication hyperlinks + slightly larger academic text --- */
.paper-title-link {
  color: inherit;
  text-decoration: none;
  transition: color .18s ease;
}

.paper-title-link:hover,
.paper-title-link:focus-visible {
  color: #0071e3;
}

.paper-link-arrow {
  display: inline-block;
  margin-left: .32em;
  font-size: .72em;
  font-weight: 500;
  line-height: 1;
  transform: translateY(-.06em);
  opacity: .58;
  transition: transform .18s ease, opacity .18s ease;
}

.paper-title-link:hover .paper-link-arrow,
.paper-title-link:focus-visible .paper-link-arrow {
  transform: translate(.12em, -.16em);
  opacity: 1;
}

.scholar-chip {
  height: 26px;
  padding: 0 9px;
  display: inline-grid;
  place-items: center;
  border-radius: 8px;
  background: #f2f2f4;
  color: #3f3f44 !important;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .01em;
  text-decoration: none;
}

/* Requested readability bump */
.mini-about-copy p {
  font-size: 19px;
  line-height: 1.62;
}

.pub-row h3 {
  font-size: 20px;
  line-height: 1.35;
}

.pub-row p {
  font-size: 15px;
  line-height: 1.5;
}

.paper-body > p:last-child {
  font-size: 16px;
}

@media (max-width: 760px) {
  .mini-about-copy p { font-size: 17px; }
  .pub-row h3 { font-size: 19px; }
  .pub-row p { font-size: 14px; }
}


/* =========================================================
   Publications — restrained single-column academic layout
   ========================================================= */

.publications-section {
  background: #fff;
}

.publication-stack {
  max-width: 980px;
  margin-top: 26px;
  border-top: 1px solid var(--line);
}

.publication-entry {
  padding: 34px 0 35px;
  border-bottom: 1px solid var(--line);
}

.publication-main {
  max-width: 900px;
}

.publication-entry h3 {
  margin: 0;
  font-size: clamp(21px, 2.1vw, 27px);
  line-height: 1.24;
  letter-spacing: -.025em;
  font-weight: 650;
}

.publication-summary {
  max-width: 830px;
  margin: 13px 0 0;
  color: #56565d;
  font-size: 17px;
  line-height: 1.58;
  letter-spacing: -.008em;
}

.publication-meta {
  margin: 12px 0 0;
  color: #8a8a91;
  font-size: 14px;
  line-height: 1.48;
}

.publication-entry .paper-title-link {
  color: var(--ink);
  text-decoration: none;
  transition: color .18s ease;
}

.publication-entry .paper-title-link:hover,
.publication-entry .paper-title-link:focus-visible {
  color: #0071e3;
}

.publication-entry .paper-link-arrow {
  margin-left: .22em;
  font-size: .62em;
  opacity: .42;
  vertical-align: .12em;
}

.publication-entry .paper-title-link:hover .paper-link-arrow,
.publication-entry .paper-title-link:focus-visible .paper-link-arrow {
  opacity: .9;
}

/* Suppress legacy publication-card layout from earlier versions */
.publication-grid,
.publication-list {
  display: none !important;
}

@media (max-width: 760px) {
  .publication-entry {
    padding: 27px 0 28px;
  }

  .publication-entry h3 {
    font-size: 21px;
  }

  .publication-summary {
    font-size: 16px;
    line-height: 1.56;
  }

  .publication-meta {
    font-size: 13px;
  }
}


/* --- Short, quiet blue publication summaries --- */
.publication-summary {
  margin: 10px 0 0;
  color: #2878c8;
  font-size: 15.5px;
  line-height: 1.45;
  font-weight: 500;
  letter-spacing: -.005em;
}

@media (max-width: 760px) {
  .publication-summary {
    font-size: 15px;
  }
}


/* --- Venue / conference emphasis --- */
.venue-highlight {
  color: #1f6fb8;
  font-weight: 650;
}


/* --- Honor annotations --- */
.honor-copy {
  min-width: 0;
}

.honor-copy h3 {
  margin: 0;
}

.honor-note {
  margin: 7px 0 0;
  color: rgba(255,255,255,.52);
  font-size: 13px;
  line-height: 1.45;
  font-weight: 400;
  letter-spacing: 0;
}

@media (max-width: 760px) {
  .honor-note {
    font-size: 12.5px;
  }
}


/* --- Highlight every occurrence of "optimization" --- */
.optimization-red {
  color: #d70015;
}




/* --- Hero Scholar link --- */
.hero-scholar {
  margin-top: 28px;
}

@media (max-width: 760px) {
  .hero-scholar {
    margin-top: 12px;
  }
}


/* --- Smaller, fully black hero title --- */
.hero h1 {
  font-size: clamp(52px, 6.2vw, 86px);
  line-height: .98;
  letter-spacing: -.055em;
  color: var(--ink);
}

.hero h1 .optimization-red {
  color: inherit;
}

@media (max-width: 760px) {
  .hero h1 {
    font-size: clamp(44px, 12vw, 62px);
  }
}


/* --- Hero title: two sizes smaller --- */
.hero h1 {
  font-size: clamp(46px, 5.4vw, 76px);
}

@media (max-width: 760px) {
  .hero h1 {
    font-size: clamp(40px, 10.5vw, 56px);
  }
}

.section-header > p.llm-era-note {
  color: #d70015;
}