:root {
  --bg: #f4f6f8;
  --bg-alt: #eef2f6;
  --surface: rgba(255, 255, 255, 0.68);
  --surface-strong: rgba(255, 255, 255, 0.88);
  --text: #111317;
  --muted: #5d6571;
  --line: rgba(17, 19, 23, 0.08);
  --shadow: 0 24px 60px rgba(20, 28, 40, 0.08);
  --shadow-strong: 0 28px 80px rgba(20, 28, 40, 0.14);
  --radius: 28px;
  --radius-lg: 38px;
  --max: 1220px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(127, 160, 255, 0.09), transparent 26%),
    radial-gradient(circle at 88% 18%, rgba(200, 210, 230, 0.16), transparent 22%),
    linear-gradient(180deg, #f8fafc 0%, #edf2f7 100%);
  line-height: 1.5;
  overflow-x: hidden;
}

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

.page-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 20% 20%, rgba(150, 170, 255, 0.12), transparent 32%),
    radial-gradient(circle at 82% 10%, rgba(230, 235, 245, 0.20), transparent 24%);
  filter: blur(30px);
  z-index: -2;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  z-index: 100;
  background: linear-gradient(90deg, rgba(32,48,82,0.9), rgba(92,116,180,0.9));
}
.publication-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.container {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(20px);
  background: rgba(248, 250, 252, 0.72);
  border-bottom: 1px solid rgba(17, 19, 23, 0.05);
}

.nav {
  min-height: 74px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
}

.brand {
  font-weight: 700;
  letter-spacing: -0.03em;
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.nav-links a {
  color: var(--muted);
  transition: color 0.25s ease, transform 0.25s ease;
}

.nav-links a:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.lang-toggle {
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
  color: var(--text);
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.25s ease, background 0.25s ease;
}

.lang-toggle:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.95);
}

.section,
.contact-section {
  position: relative;
  padding: 84px 0;
}

.section-alt {
  background: rgba(255, 255, 255, 0.28);
}

.hero {
  padding-top: 56px;
  min-height: 100svh;
  display: flex;
  align-items: center;
}

.hero-grid {
  width: 100%;
  min-height: calc(100svh - 120px);
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 42px;
  align-items: center;
}

.section-kicker {
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: #6d7682;
  margin: 0 0 12px;
}

h1, h2, h3, p {
  margin-top: 0;
}

h1 {
  font-size: clamp(3.1rem, 7vw, 6rem);
  line-height: 0.93;
  letter-spacing: -0.06em;
  max-width: 10ch;
  margin-bottom: 20px;
}

h2 {
  font-size: clamp(2rem, 4.8vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
  margin-bottom: 14px;
}

h3 {
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.lead,
.section-head p,
.panel p,
.quote-panel p {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 74ch;
  position: relative;
  z-index: 1;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 600;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  background: #111317;
  color: white;
  box-shadow: var(--shadow);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--line);
}

.hero-copy {
  will-change: transform, opacity;
}

.hero-copy-anim {
  transform: translateY(0) scale(1);
}

.hero-visual {
  position: relative;
  display: grid;
  align-items: end;
  will-change: transform;
}

.portrait-shell {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-strong);
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.82);
}

.site-image {
  width: 100%;
  display: block;
  object-fit: cover;
  object-position: center 8%;
  transform: scale(1);
}

.site-image.portrait.large {
  height: auto;
  max-height: none;
  min-height: 0;
}
.portrait-shell {
  aspect-ratio: 3 / 4;
}
.info-card,
.panel,
.quote-panel,
.project-image-shell {
  backdrop-filter: blur(18px);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.74);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
}

.info-card,
.panel {
  padding: 26px;
}

.info-card.float-card {
  position: absolute;
  right: -18px;
  bottom: 22px;
  max-width: 320px;
  background: rgba(255, 255, 255, 0.76);
}

.label {
  display: block;
  font-size: 0.84rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.info-line strong {
  font-size: 1.12rem;
  letter-spacing: -0.02em;
}

.section-head {
  margin-bottom: 34px;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.cards-two {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.image-row {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.project-image-shell {
  overflow: hidden;
  min-height: 320px;
  padding: 0;
}

.project-image {
  width: 100%;
  height: 100%;
  min-height: 320px;
}

.real-project-image {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  background: linear-gradient(180deg, rgba(248,250,252,0.96), rgba(232,237,244,0.96));
}

.project-shot {
  background: linear-gradient(180deg, rgba(250,251,253,0.92), rgba(236,240,246,0.92));
}

.neural-shot {
  background: linear-gradient(180deg, rgba(248,250,252,0.92), rgba(234,238,244,0.92));
}

.project-shot .real-project-image {
  object-position: center top;
  padding: 18px;
  border-radius: 26px;
}

.neural-shot .real-project-image {
  object-fit: contain;
  object-position: center;
  padding: 26px;
}

.project-image-shell img {
  filter: saturate(0.98) contrast(1.01);
}

.project-image-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.55);
}

.project-image-shell {
  position: relative;
}

.timeline {
  position: relative;
  display: grid;
  gap: 24px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: rgba(17, 19, 23, 0.08);
}

.timeline-item {
  position: relative;
  padding-left: 46px;
}

.dot {
  position: absolute;
  left: 7px;
  top: 24px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #111317;
  box-shadow: 0 0 0 6px rgba(17, 19, 23, 0.08);
}

.meta {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 11px;
  border-radius: 999px;
  background: rgba(17, 19, 23, 0.05);
  color: #525b67;
  font-size: 0.84rem;
  margin-bottom: 12px;
}

.research-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 24px;
}

.contributions {
  display: grid;
  gap: 18px;
}

.mini-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.mini-item {
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  background: rgba(17, 19, 23, 0.05);
  color: #4f5661;
  font-size: 0.92rem;
}

.quote-panel {
  padding: 46px;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;

  transform: scale(0.96);
  transition: transform 0.5s ease;
}
.quote-panel.in-view {
  transform: scale(1);
}

.contact-panel {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}

.contact-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.contact-links a {
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  background: rgba(17, 19, 23, 0.05);
  color: var(--text);
  transition: transform 0.25s ease, background 0.25s ease;
}

.contact-links a:hover {
  transform: translateY(-2px);
  background: rgba(17, 19, 23, 0.08);
}

.reveal {
  opacity: 0;
  transform: translateY(42px) scale(0.985);
  transition:
    opacity 0.9s cubic-bezier(.22,1,.36,1),
    transform 1s cubic-bezier(.22,1,.36,1);
  will-change: opacity, transform;
}

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

.card-lift,
.parallax-box,
.quote-zoom {
  will-change: transform;
}

.section-intro {
  transform-origin: center top;
}

@media (max-width: 1100px) {
  .hero-grid,
  .about-grid,
  .cards-two,
  .image-row,
  .research-layout,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-grid {
    min-height: auto;
  }

  .info-card.float-card {
    position: static;
    margin-top: 18px;
    max-width: none;
  }

  .site-image.portrait.large {
    height: auto;
    min-height: 0;
    max-height: none;
  }
}

@media (max-width: 820px) {
  .nav {
    grid-template-columns: 1fr;
    justify-items: start;
    padding: 14px 0;
  }

  .nav-links {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .section,
  .contact-section {
    padding: 58px 0;
    position: relative;
    z-index: 2;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(2.7rem, 12vw, 4rem);
  }

  .panel,
  .info-card,
  .quote-panel {
    padding: 22px;
  }

  .project-image-shell,
  .project-image {
    min-height: 240px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .card-lift,
  .parallax-box,
  .quote-zoom,
  .hero-copy-anim,
  .hero-visual,
  .scroll-progress {
    transition: none !important;
    transform: none !important;
  }
}