:root {
  --paper: #f3efe4;
  --paper-soft: #faf7ee;
  --paper-deep: #e8dece;
  --ink: #0b2242;
  --ink-2: #173967;
  --muted: #5f6c7d;
  --dim: #8a8f95;
  --line: rgba(11, 34, 66, 0.17);
  --line-strong: rgba(11, 34, 66, 0.34);
  --blue-soft: rgba(11, 34, 66, 0.055);
  --blue-pixel: rgba(11, 34, 66, 0.11);
  --panel: rgba(250, 247, 238, 0.82);
  --max: 1160px;
  --serif: "Times New Roman", Times, Georgia, serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--paper);
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(11, 34, 66, 0.035) 1px, transparent 1px),
    linear-gradient(0deg, rgba(11, 34, 66, 0.03) 1px, transparent 1px),
    radial-gradient(circle at 82% 10%, rgba(11, 34, 66, 0.06), transparent 31rem),
    linear-gradient(180deg, var(--paper-soft), var(--paper) 28rem);
  background-size: 22px 22px, 22px 22px, auto, auto;
  font-family: var(--serif);
  line-height: 1.54;
  letter-spacing: 0;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.28;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent calc(100% - 1px), rgba(11, 34, 66, 0.06) 0) 0 0 / 8px 8px,
    linear-gradient(180deg, transparent calc(100% - 1px), rgba(11, 34, 66, 0.045) 0) 0 0 / 8px 8px;
  mask-image: linear-gradient(180deg, black, transparent 72%);
}

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

#signal-field {
  position: fixed;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  opacity: 1;
  image-rendering: pixelated;
  pointer-events: none;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0.78rem clamp(1rem, 3vw, 2.35rem);
  color: var(--ink);
  background: rgba(250, 247, 238, 0.84);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.wordmark,
.nav-links {
  display: inline-flex;
  align-items: center;
}

.wordmark {
  min-width: 0;
  gap: 0.62rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
}

.mark {
  width: 0.64rem;
  height: 0.64rem;
  background: var(--ink);
  box-shadow:
    8px 0 0 rgba(11, 34, 66, 0.22),
    0 8px 0 rgba(11, 34, 66, 0.14);
  image-rendering: pixelated;
}

.build-id {
  color: var(--muted);
  font-size: 0.64rem;
  font-weight: 600;
}

.nav-links {
  gap: 0.25rem;
}

.nav-links a {
  min-height: 1.9rem;
  padding: 0.25rem 0.65rem;
  color: var(--muted);
  border: 1px solid transparent;
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
}

.nav-links a:hover {
  color: var(--ink);
  border-color: var(--line);
  background: rgba(11, 34, 66, 0.045);
}

main {
  position: relative;
  z-index: 1;
}

.hero-section {
  position: relative;
  min-height: 86svh;
  padding: 7rem clamp(0.95rem, 3vw, 2.2rem) 4.5rem;
}

.hero-grid,
.section,
.contact-section,
.footer {
  width: min(var(--max), calc(100vw - 2rem));
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1.4rem, 4vw, 4rem);
  min-height: calc(86svh - 11.5rem);
  align-items: end;
}

.hero-copy {
  grid-column: 1 / 8;
  min-width: 0;
  max-width: 100%;
  padding-bottom: clamp(0rem, 2.5vw, 2.2rem);
}

.portrait-panel {
  grid-column: 8 / 13;
  align-self: center;
  min-width: 0;
  max-width: 100%;
}

.eyebrow,
.section-label,
.portrait-meta,
.pub-meta,
.timeline-item time {
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 1rem;
}

.serif-title {
  max-width: 760px;
  margin: 0 0 1rem;
  font-family: var(--serif);
  font-size: clamp(3.8rem, 9.8vw, 8rem);
  font-weight: 400;
  line-height: 0.86;
  letter-spacing: -0.01em;
}

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

.lead {
  max-width: 660px;
  margin-bottom: 1rem;
  color: var(--ink);
  font-size: clamp(1.12rem, 1.8vw, 1.55rem);
  line-height: 1.22;
}

.profile-summary {
  max-width: 660px;
  margin-bottom: 1.25rem;
  color: var(--muted);
  font-size: clamp(0.98rem, 1.15vw, 1.08rem);
}

.lab-readout {
  display: grid;
  grid-template-columns: 0.8fr 1.05fr 1.2fr;
  max-width: 810px;
  margin: 1.35rem 0 1.1rem;
  border: 1px solid var(--line);
  background: rgba(250, 247, 238, 0.52);
  box-shadow: 6px 6px 0 rgba(11, 34, 66, 0.045);
}

.lab-readout div {
  min-height: 4.15rem;
  padding: 0.72rem 0.78rem;
  border-right: 1px solid var(--line);
}

.lab-readout div:last-child {
  border-right: 0;
}

.lab-readout span {
  display: block;
  margin-bottom: 0.28rem;
  color: var(--dim);
  font-family: var(--mono);
  font-size: 0.61rem;
  font-weight: 700;
  text-transform: uppercase;
}

.lab-readout strong {
  display: block;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  line-height: 1.32;
}

.hero-actions,
.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.1rem;
}

.primary-action,
.secondary-action,
.contact-links a,
.publication-card a {
  display: inline-flex;
  align-items: center;
  min-height: 2.18rem;
  padding: 0 0.78rem;
  border: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
}

.primary-action {
  color: var(--paper-soft);
  background: var(--ink);
}

.secondary-action,
.contact-links a,
.publication-card a {
  color: var(--ink);
  background: rgba(250, 247, 238, 0.78);
}

.secondary-action:hover,
.contact-links a:hover,
.publication-card a:hover {
  background: rgba(11, 34, 66, 0.075);
}

.portrait-frame,
.research-card,
.publication-card,
.timeline-item,
.info-grid article {
  position: relative;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  box-shadow: 7px 7px 0 rgba(11, 34, 66, 0.065);
}

.portrait-frame::before,
.research-card::before,
.publication-card::before,
.timeline-item::before,
.info-grid article::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 0.8rem;
  height: 0.8rem;
  background:
    linear-gradient(90deg, var(--ink) 50%, transparent 50%) 0 0 / 4px 4px,
    linear-gradient(180deg, var(--ink) 50%, transparent 50%) 0 0 / 4px 4px;
  image-rendering: pixelated;
}

.portrait-frame {
  padding: 0.72rem;
  background:
    linear-gradient(90deg, transparent calc(100% - 1px), var(--blue-pixel) 0) 0 0 / 12px 12px,
    linear-gradient(180deg, transparent calc(100% - 1px), var(--blue-pixel) 0) 0 0 / 12px 12px,
    rgba(250, 247, 238, 0.9);
}

.portrait-frame img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: center 32%;
  filter: saturate(0.92) contrast(0.98);
}

.portrait-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.78rem;
  color: var(--muted);
  font-size: 0.62rem;
}

.hero-rail {
  position: absolute;
  right: clamp(0.5rem, 2vw, 1.5rem);
  bottom: 2.1rem;
  writing-mode: vertical-rl;
  color: rgba(11, 34, 66, 0.24);
  font-family: var(--mono);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.section {
  position: relative;
  padding: clamp(4rem, 7vw, 6.4rem) 0;
  border-top: 1px solid var(--line);
}

.section::before {
  content: attr(id);
  position: absolute;
  top: 0.75rem;
  left: 0;
  color: var(--dim);
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
}

.section-head {
  max-width: 760px;
  margin-bottom: 1.7rem;
}

.section-label {
  margin: 0 0 0.62rem;
}

.section-head h2,
.contact-section h2 {
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: clamp(2rem, 3.8vw, 4.2rem);
  line-height: 0.98;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.section-note {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 1rem;
}

.research-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem;
}

.research-card {
  min-height: 15rem;
  padding: 1.1rem;
}

.research-card > span {
  color: var(--ink-2);
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 700;
}

.research-card h3,
.timeline-item h3,
.info-grid h3 {
  margin: 1.1rem 0 0.56rem;
  font-family: var(--serif);
  font-size: 1.34rem;
  font-weight: 400;
  line-height: 1.06;
}

.research-card p,
.timeline-item p,
.info-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.48;
}

.education-entry {
  display: grid;
  gap: 0.16rem;
}

.education-entry span {
  display: block;
}

.hero-copy,
.portrait-panel,
.section-head,
.research-card,
.publication-card,
.timeline-item,
.info-grid article,
.contact-section {
  overflow-wrap: anywhere;
}

.split-section {
  display: grid;
  grid-template-columns: 0.35fr 0.65fr;
  gap: clamp(1.5rem, 5vw, 4.5rem);
  align-items: start;
}

.sticky-head {
  position: sticky;
  top: 5.3rem;
  margin-bottom: 0;
}

.publication-list,
.timeline {
  display: grid;
  gap: 0.72rem;
}

.publication-card {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr) auto;
  gap: 0.9rem;
  align-items: start;
  padding: 0.96rem;
}

.publication-card.featured {
  background:
    linear-gradient(90deg, rgba(11, 34, 66, 0.06), transparent 34%),
    var(--panel);
}

.pub-meta {
  display: grid;
  gap: 0.2rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.62rem;
}

.publication-card h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.1rem, 1.5vw, 1.36rem);
  font-weight: 400;
  line-height: 1.08;
}

.publication-card p {
  grid-column: 2 / 3;
  margin: -0.36rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.36;
}

.publication-card a {
  justify-self: end;
  min-height: 1.95rem;
  color: var(--ink-2);
  font-size: 0.62rem;
}

.timeline-item {
  padding: 1rem 1rem 1rem 1.18rem;
}

.timeline-item::before {
  width: 0.7rem;
  height: 0.7rem;
}

.timeline-item h3 {
  margin-top: 0.62rem;
}

.compact-section {
  padding-top: 0;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1.28fr 0.82fr;
  gap: 0.9rem;
}

.info-grid article {
  padding: 1.08rem;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
}

.tag-cloud span {
  display: inline-flex;
  align-items: center;
  min-height: 1.86rem;
  padding: 0 0.58rem;
  color: var(--ink);
  border: 1px solid var(--line);
  background: rgba(11, 34, 66, 0.035);
  font-family: var(--mono);
  font-size: 0.66rem;
  font-weight: 600;
}

.contact-section {
  padding: clamp(4rem, 7vw, 6rem) 0;
  border-top: 1px solid var(--line);
}

.contact-section h2 {
  max-width: 980px;
}

.footer {
  padding: 2rem 0 3rem;
  color: var(--dim);
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.66rem;
}

.bottom-pets {
  position: fixed;
  right: clamp(0.75rem, 2.6vw, 2rem);
  bottom: clamp(0.75rem, 2.2vw, 1.5rem);
  z-index: 45;
  display: grid;
  justify-items: end;
  gap: 0.35rem;
  width: min(28rem, calc(100vw - 1.5rem));
  opacity: 0;
  pointer-events: none;
  transform: translateY(1rem);
  transition: opacity 420ms ease, transform 420ms ease;
}

.bottom-pets.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.pet-stage {
  display: flex;
  align-items: end;
  gap: 0.82rem;
  padding: 0.52rem 0.68rem 0.32rem;
  border: 1px solid rgba(11, 34, 66, 0.16);
  background: rgba(250, 247, 238, 0.62);
  box-shadow: 5px 5px 0 rgba(11, 34, 66, 0.045);
  backdrop-filter: blur(8px);
}

.pixel-pet {
  position: relative;
  width: 6.85rem;
  height: 6.95rem;
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  cursor: pointer;
  image-rendering: pixelated;
}

.pixel-pet::after {
  content: "";
  position: absolute;
  left: 0.44rem;
  right: 0.44rem;
  bottom: 0.05rem;
  height: 0.18rem;
  background: rgba(11, 34, 66, 0.12);
}

.sprite-grid {
  --pet-u: 4px;
  --pet-cols: 24;
  --pet-rows: 24;
  position: absolute;
  left: 50%;
  bottom: 0.28rem;
  display: grid;
  grid-template-columns: repeat(var(--pet-cols), var(--pet-u));
  grid-template-rows: repeat(var(--pet-rows), var(--pet-u));
  width: calc(var(--pet-u) * var(--pet-cols));
  height: calc(var(--pet-u) * var(--pet-rows));
  transform: translateX(-50%);
}

.sprite-grid span {
  width: var(--pet-u);
  height: var(--pet-u);
}

.sprite-grid .p-dark {
  background: var(--ink);
}

.sprite-grid .p-mid {
  background: var(--muted);
}

.sprite-grid .p-light {
  background: var(--paper-soft);
}

.sprite-grid .p-soft {
  background: rgba(11, 34, 66, 0.18);
}

.sprite-grid .p-blush {
  background: rgba(190, 118, 118, 0.44);
}

.rabbit-pet .sprite-grid {
  --pet-u: 4.7px;
}

.cat-pet .sprite-grid {
  --pet-u: 3.35px;
}

.pet-bubble {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 0.35rem);
  z-index: 2;
  display: block;
  padding: 0.28rem 0.42rem;
  color: var(--ink);
  border: 1px solid rgba(11, 34, 66, 0.28);
  background: rgba(250, 247, 238, 0.94);
  box-shadow: 3px 3px 0 rgba(11, 34, 66, 0.06);
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  opacity: 0;
  transform: translate(-50%, 0.25rem);
  transition: opacity 180ms ease, transform 180ms ease;
}

.pet-bubble::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -5px;
  width: 6px;
  height: 6px;
  border-right: 1px solid rgba(11, 34, 66, 0.28);
  border-bottom: 1px solid rgba(11, 34, 66, 0.28);
  background: rgba(250, 247, 238, 0.94);
  transform: translateX(-50%) rotate(45deg);
}

.pixel-pet:hover .pet-bubble,
.pixel-pet:focus-visible .pet-bubble {
  opacity: 1;
  transform: translate(-50%, 0);
}

.pixel-pet:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 0.18rem;
}

.pet-message {
  max-width: 24.5rem;
  margin: 0;
  padding: 0.48rem 0.62rem;
  color: rgba(95, 108, 125, 0.72);
  border: 1px solid rgba(11, 34, 66, 0.1);
  background: rgba(250, 247, 238, 0.58);
  font-family: var(--serif);
  font-size: 0.82rem;
  line-height: 1.35;
  opacity: 0;
  transform: translateY(0.35rem);
  transition: opacity 280ms ease, transform 280ms ease;
}

.bottom-pets.is-thanked .pet-message {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .nav-links {
    display: none;
  }

  .build-id {
    display: none;
  }

  .hero-grid,
  .split-section,
  .info-grid,
  .research-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    min-height: 0;
    align-items: start;
  }

  .hero-copy,
  .portrait-panel {
    grid-column: 1;
  }

  .portrait-panel {
    max-width: 28rem;
  }

  .sticky-head {
    position: static;
  }

  .publication-card {
    grid-template-columns: 1fr;
  }

  .publication-card p,
  .publication-card a {
    grid-column: auto;
    justify-self: start;
  }

  .hero-rail {
    display: none;
  }
}

@media (max-width: 640px) {
  html,
  body {
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }

  .hero-section {
    min-height: 0;
    padding: 5.6rem 0 3rem;
  }

  .hero-grid,
  .section,
  .contact-section,
  .footer {
    width: calc(100% - 1.5rem);
  }

  .hero-copy,
  .portrait-panel,
  .serif-title,
  .lead,
  .profile-summary,
  .lab-readout,
  .hero-actions {
    width: 100%;
    max-width: 100%;
    min-width: 0;
  }

  .lead,
  .profile-summary {
    overflow-wrap: anywhere;
  }

  .serif-title {
    font-size: clamp(3.15rem, 16vw, 4.8rem);
  }

  .lead {
    font-size: 1.16rem;
  }

  .profile-summary,
  .section-note {
    font-size: 0.95rem;
  }

  .lab-readout {
    grid-template-columns: 1fr;
  }

  .lab-readout div {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .lab-readout div:last-child {
    border-bottom: 0;
  }

  .portrait-meta {
    display: grid;
  }

  .research-card,
  .publication-card,
  .timeline-item,
  .info-grid article,
  .portrait-frame,
  .lab-readout {
    box-shadow: 5px 5px 0 rgba(11, 34, 66, 0.055);
  }

  .section {
    padding: 3.5rem 0;
  }

  .bottom-pets {
    right: 0.65rem;
    bottom: 0.65rem;
    width: calc(100vw - 1.3rem);
  }

  .pet-message {
    max-width: 100%;
    font-size: 0.78rem;
  }
}

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

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}