:root {
  --ink: #18201e;
  --muted: #68716d;
  --paper: #f5f1e8;
  --paper-deep: #ebe4d7;
  --card: rgba(255, 255, 255, 0.68);
  --line: rgba(24, 32, 30, 0.14);
  --forest: #214f42;
  --ember: #c66847;
  --serif: Georgia, "Times New Roman", serif;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 12%, rgba(198, 104, 71, 0.11), transparent 26rem),
    radial-gradient(circle at 90% 20%, rgba(33, 79, 66, 0.09), transparent 32rem),
    var(--paper);
  font-family: var(--sans);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

button {
  font: inherit;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  border-radius: 999px;
  color: white;
  background: var(--ink);
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 78px;
  padding: 0.8rem clamp(1rem, 4vw, 4.5rem);
  border-bottom: 1px solid var(--line);
  background: rgba(245, 241, 232, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  color: var(--ink);
  font-size: 0.86rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.wordmark-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  color: var(--paper);
  background: var(--forest);
  font-family: var(--serif);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.tab-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.28rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.54);
}

.tab-button {
  min-width: 96px;
  padding: 0.65rem 1rem;
  border: 0;
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 0.77rem;
  font-weight: 780;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  transition: color 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.tab-button:hover {
  color: var(--ink);
}

.tab-button.is-active {
  color: white;
  background: var(--ink);
  box-shadow: 0 4px 16px rgba(24, 32, 30, 0.2);
}

.tab-button:focus-visible,
.paper-link:focus-visible,
.wordmark:focus-visible,
.bio-contact:focus-visible,
.marble-tile:focus-visible,
.marble-footer a:focus-visible,
.lightbox button:focus-visible {
  outline: 3px solid #e9a36e;
  outline-offset: 3px;
}

.tab-panel {
  min-height: calc(100vh - 78px);
  animation: panel-in 360ms ease both;
}

.tab-panel[hidden] {
  display: none !important;
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--ember);
  font-size: 0.73rem;
  font-weight: 820;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.bio-panel {
  display: grid;
  place-items: center;
  padding: clamp(2rem, 6vw, 6rem) clamp(1rem, 6vw, 7rem);
}

.bio-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  width: min(1120px, 100%);
  min-height: min(680px, calc(100vh - 150px));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 36px;
  background: rgba(255, 255, 255, 0.56);
  box-shadow: 0 30px 90px rgba(52, 43, 30, 0.12);
}

.portrait-frame {
  position: relative;
  min-height: 520px;
  margin: 0;
  overflow: hidden;
  background: #d9d2c7;
}

.portrait-frame::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, transparent 60%, rgba(10, 16, 14, 0.48));
  pointer-events: none;
}

.portrait-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 50%;
  filter: saturate(0.9) contrast(1.03);
}

.portrait-frame figcaption {
  position: absolute;
  z-index: 2;
  right: 1.3rem;
  bottom: 1.2rem;
  left: 1.3rem;
  color: rgba(255, 255, 255, 0.86);
  font-size: 0.69rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.bio-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2.2rem, 4vw, 4rem);
}

.section-intro h1,
.marble-heading h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.2rem, 7vw, 6.8rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.93;
}

.bio-copy h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3rem, 5vw, 4.8rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 0.98;
  white-space: nowrap;
}

.bio-text {
  max-width: 62ch;
  margin-top: clamp(1.8rem, 3vw, 2.7rem);
  padding-top: clamp(1.5rem, 2.5vw, 2.2rem);
  border-top: 1px solid var(--line);
}

.bio-text p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(0.94rem, 1.15vw, 1.02rem);
  line-height: 1.72;
}

.bio-text p + p {
  margin-top: 1.15rem;
}

.bio-contact {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem 0.8rem;
  width: fit-content;
  max-width: 100%;
  margin-top: 1.55rem;
  padding: 0.72rem 0.95rem;
  border: 1px solid rgba(33, 79, 66, 0.22);
  border-radius: 999px;
  color: var(--forest);
  background: rgba(255, 255, 255, 0.46);
  font-size: 0.82rem;
  text-decoration: none;
  transition: background 160ms ease, border-color 160ms ease, transform 160ms ease;
}

.bio-contact span {
  font-size: 0.68rem;
  font-weight: 820;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.bio-contact strong {
  overflow-wrap: anywhere;
}

.bio-contact:hover {
  border-color: rgba(33, 79, 66, 0.42);
  background: rgba(255, 255, 255, 0.76);
  transform: translateY(-1px);
}

.research-panel {
  padding: clamp(3.2rem, 7vw, 7.5rem) clamp(1rem, 5vw, 5.5rem) 6rem;
}

.section-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.48fr);
  align-items: end;
  gap: 2rem;
  width: min(1320px, 100%);
  margin: 0 auto clamp(2.8rem, 6vw, 5.5rem);
}

.section-intro .eyebrow,
.section-intro h1 {
  grid-column: 1;
}

.section-intro h1 {
  font-size: clamp(4rem, 9vw, 8.6rem);
}

.section-intro > p:last-child {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: end;
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-family: var(--serif);
  font-size: clamp(1.2rem, 2vw, 1.7rem);
  line-height: 1.35;
}

.paper-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  width: min(1320px, 100%);
  margin: 0 auto;
}

.paper-card {
  display: flex;
  flex-direction: column;
  min-height: 410px;
  padding: clamp(1.6rem, 3vw, 2.6rem);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--card);
  box-shadow: 0 16px 50px rgba(49, 42, 32, 0.055);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.paper-card:hover {
  border-color: rgba(33, 79, 66, 0.35);
  box-shadow: 0 22px 60px rgba(49, 42, 32, 0.1);
  transform: translateY(-3px);
}

.paper-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 2rem;
}

.paper-meta span {
  padding: 0.42rem 0.68rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 760;
  letter-spacing: 0.09em;
  opacity: 0.85;
  text-transform: uppercase;
}

.paper-card h2 {
  margin: 0 0 1.3rem;
  font-family: var(--serif);
  font-size: clamp(1.55rem, 2.5vw, 2.15rem);
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.paper-card > p {
  margin: 0 0 2rem;
  color: var(--muted);
  font-size: 0.97rem;
  line-height: 1.75;
}

.paper-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: fit-content;
  margin-top: auto;
  padding-bottom: 0.38rem;
  border-bottom: 1px solid currentColor;
  color: var(--forest);
  font-size: 0.78rem;
  font-weight: 820;
  letter-spacing: 0.09em;
  text-decoration: none;
  text-transform: uppercase;
}

.paper-link span {
  font-size: 1rem;
  transition: transform 160ms ease;
}

.paper-link:hover span {
  transform: translate(2px, -2px);
}

.marble-panel {
  position: relative;
  overflow: hidden;
  color: #fffaf4;
  background:
    radial-gradient(circle at 20% 10%, rgba(40, 220, 209, 0.2), transparent 30%),
    radial-gradient(circle at 82% 16%, rgba(244, 96, 171, 0.2), transparent 32%),
    radial-gradient(circle at 50% 110%, rgba(255, 198, 82, 0.16), transparent 42%),
    linear-gradient(145deg, #03020a, #071b35 58%, #25051c);
}

.marble-panel::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.028) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(circle at center, black, transparent 82%);
  pointer-events: none;
}

.marble-glow {
  position: absolute;
  width: 42rem;
  height: 42rem;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.14;
  pointer-events: none;
  animation: drift 18s ease-in-out infinite alternate;
}

.marble-glow-one {
  top: 2%;
  left: -18rem;
  background: #53fff4;
}

.marble-glow-two {
  right: -16rem;
  bottom: -12rem;
  background: #f56bb8;
  animation-delay: -8s;
}

@keyframes drift {
  to {
    transform: translate(8rem, 5rem) scale(1.15);
  }
}

.marble-content {
  position: relative;
  z-index: 2;
  width: min(1380px, 100%);
  margin: 0 auto;
  padding: clamp(3.2rem, 7vw, 7rem) clamp(1rem, 5vw, 4rem) 2rem;
}

.marble-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 2rem;
  margin-bottom: clamp(2.5rem, 6vw, 5rem);
}

.marble-heading .eyebrow {
  max-width: 420px;
  margin-bottom: 0.4rem;
  color: rgba(255, 255, 255, 0.62);
}

.marble-heading h1 {
  font-size: clamp(4rem, 10vw, 9rem);
}

.marble-stage {
  position: relative;
  min-height: clamp(520px, 72vh, 780px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: clamp(26px, 4vw, 44px);
  background:
    radial-gradient(circle at 50% 48%, rgba(82, 255, 241, 0.08), transparent 34%),
    radial-gradient(circle at 35% 35%, rgba(245, 107, 184, 0.08), transparent 42%),
    rgba(2, 4, 16, 0.38);
  box-shadow:
    inset 0 0 120px rgba(86, 255, 241, 0.05),
    0 34px 100px rgba(0, 0, 0, 0.34);
  cursor: grab;
  isolation: isolate;
  touch-action: none;
  user-select: none;
}

.marble-stage:active {
  cursor: grabbing;
}

.galaxy-ring {
  position: absolute;
  inset: 8%;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  box-shadow:
    inset 0 0 100px rgba(82, 255, 241, 0.07),
    0 0 90px rgba(245, 107, 184, 0.08);
  pointer-events: none;
  animation: pulse-ring 6s ease-in-out infinite;
}

.galaxy-ring-two {
  inset: 19%;
  opacity: 0.55;
  transform: rotate(32deg) scaleX(1.2);
}

.galaxy-ring-three {
  inset: 30%;
  opacity: 0.35;
  transform: rotate(-26deg) scaleY(0.72);
}

@keyframes pulse-ring {
  50% {
    filter: blur(0.5px);
    opacity: 0.58;
  }
}

.sphere-hint {
  position: absolute;
  z-index: 5;
  top: 1rem;
  left: 50%;
  margin: 0;
  padding: 0.5rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.72);
  background: rgba(0, 0, 0, 0.25);
  font-size: 0.73rem;
  letter-spacing: 0.04em;
  pointer-events: none;
  transform: translateX(-50%);
  white-space: nowrap;
}

.marble-grid {
  position: absolute;
  z-index: 2;
  inset: 0;
}

.marble-tile {
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 120px;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  box-shadow:
    inset -12px -16px 28px rgba(0, 0, 0, 0.24),
    inset 8px 8px 18px rgba(255, 255, 255, 0.1),
    0 22px 60px rgba(0, 0, 0, 0.48);
  cursor: zoom-in;
  transform-origin: center;
  will-change: transform, width, height, opacity;
}

.marble-tile img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  object-fit: cover;
  transition: transform 500ms cubic-bezier(0.2, 0.75, 0.25, 1), filter 500ms ease;
}

.marble-tile::after {
  position: absolute;
  inset: 0;
  content: "";
  border-radius: inherit;
  background:
    radial-gradient(circle at 28% 20%, rgba(255, 255, 255, 0.28), transparent 22%),
    radial-gradient(circle at 66% 72%, transparent 50%, rgba(0, 0, 0, 0.28));
  pointer-events: none;
}

.marble-tile:hover img {
  filter: saturate(1.12) contrast(1.04);
  transform: scale(1.035);
}

.gallery-status {
  padding: 3rem;
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: 24px;
  color: rgba(255, 255, 255, 0.62);
  text-align: center;
}

.marble-footer {
  display: flex;
  justify-content: center;
  padding: clamp(4rem, 9vw, 8rem) 0 2.5rem;
}

.marble-footer a {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 1rem 1.35rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.075);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-size: 0.86rem;
  text-decoration: none;
  transition: color 160ms ease, background 160ms ease, transform 160ms ease;
}

.marble-footer a:hover {
  color: white;
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.marble-footer strong {
  color: white;
}

.lightbox {
  position: fixed;
  z-index: 500;
  inset: 0;
  display: none;
  width: 100%;
  height: 100%;
  padding: clamp(1rem, 5vw, 4rem);
  overflow: hidden;
  border: 0;
  color: white;
  background: rgba(1, 2, 7, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.lightbox.is-open {
  display: grid;
  place-items: center;
}

html.lightbox-open {
  overflow: hidden;
}

.lightbox figure {
  width: min(1040px, 100%);
  height: min(84vh, 820px);
  margin: 0;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 28px;
  background: rgba(8, 10, 18, 0.78);
  box-shadow: 0 50px 150px rgba(0, 0, 0, 0.75);
}

.lightbox img {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 18px;
  object-fit: contain;
}

.lightbox-close,
.lightbox-arrow {
  position: absolute;
  z-index: 3;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: white;
  background: rgba(10, 12, 20, 0.72);
  cursor: pointer;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.lightbox-close {
  top: 1.2rem;
  right: 1.2rem;
  width: 48px;
  height: 48px;
  font-size: 1.6rem;
}

.lightbox-arrow {
  top: 50%;
  width: 50px;
  height: 50px;
  font-size: 1.2rem;
  transform: translateY(-50%);
}

.lightbox-previous {
  left: clamp(1rem, 3vw, 2.5rem);
}

.lightbox-next {
  right: clamp(1rem, 3vw, 2.5rem);
}

.lightbox-arrow[hidden] {
  display: none;
}

@media (max-width: 900px) {
  .bio-layout {
    grid-template-columns: 1fr;
  }

  .portrait-frame {
    min-height: 46vh;
  }

  .bio-copy {
    min-height: 360px;
  }

  .bio-copy h1 {
    white-space: normal;
  }

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

  .section-intro > p:last-child {
    grid-column: 1;
    grid-row: auto;
  }

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

  .paper-card {
    min-height: 0;
  }
}

@media (max-width: 720px) {
  .site-header {
    align-items: stretch;
    flex-direction: column;
    gap: 0.65rem;
    padding: 0.75rem 1rem;
  }

  .wordmark {
    justify-content: center;
  }

  .wordmark-mark {
    width: 34px;
    height: 34px;
  }

  .tab-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    width: 100%;
  }

  .tab-button {
    min-width: 0;
    padding-inline: 0.45rem;
  }

  .tab-panel {
    min-height: calc(100vh - 126px);
  }

  .bio-panel,
  .research-panel {
    padding-inline: 0.8rem;
  }

  .bio-layout {
    border-radius: 24px;
  }

  .portrait-frame {
    min-height: 42vh;
  }

  .bio-copy {
    padding: 2rem 1.4rem 2.5rem;
  }

  .bio-copy h1 {
    font-size: clamp(2.9rem, 12vw, 4.2rem);
  }

  .bio-contact {
    align-items: flex-start;
    flex-direction: column;
    border-radius: 20px;
  }

  .paper-card {
    border-radius: 22px;
  }

  .marble-heading {
    align-items: flex-start;
    flex-direction: column-reverse;
  }

  .marble-stage {
    min-height: min(610px, 68vh);
    border-radius: 24px;
  }

  .sphere-hint {
    max-width: calc(100% - 2rem);
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .lightbox-arrow {
    top: auto;
    bottom: 1.2rem;
    transform: none;
  }

  .lightbox-previous {
    left: 1.2rem;
  }

  .lightbox-next {
    right: 1.2rem;
  }
}

@media (max-width: 460px) {
  .wordmark span:last-child {
    font-size: 0.76rem;
  }

  .marble-stage {
    min-height: 500px;
  }

  .marble-footer a {
    align-items: flex-start;
    flex-direction: column;
    border-radius: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}