:root {
  --paper: #f3f0e8;
  --ink: #161616;
  --mute: #5e5a54;
  --rule: #d5d0c6;
  --accent: #0f6b66;
  --accent-soft: #d7ebe8;
  --plane: #fffdf8;
  --stage: #0e1012;
  --stage-ink: #edeae4;
  --header-h: 4.25rem;
  --display: "Syne", sans-serif;
  --serif: "Source Serif 4", Georgia, serif;
  --pad: clamp(1.25rem, 4vw, 3.5rem);
  --max: 1120px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--serif);
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  min-height: 100%;
}

img {
  max-width: 100%;
  display: block;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

h1,
h2,
h3 {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0;
}

p {
  margin: 0;
}

.skip {
  position: absolute;
  left: 0.75rem;
  top: -4rem;
  z-index: 100;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 0.85rem;
  font-family: var(--display);
  font-size: 0.85rem;
}

.skip:focus {
  top: 0.75rem;
}

/* ========== Header / nav ========== */

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  border-bottom: 1px solid var(--rule);
}

.brand {
  display: block;
  width: 3.6rem;
  height: 2.1rem;
  background: var(--ink);
  -webkit-mask: url("images/path4794.png") center / contain no-repeat;
  mask: url("images/path4794.png") center / contain no-repeat;
  flex-shrink: 0;
}

.nav-toggle {
  width: 2.7rem;
  height: 2.7rem;
  border: 1px solid var(--ink);
  position: relative;
  z-index: 60;
  background: var(--ink);
  margin-left: auto;
  flex-shrink: 0;
}

.nav-toggle span {
  position: absolute;
  left: 0.6rem;
  right: 0.6rem;
  height: 2px;
  background: var(--paper);
  transition: transform 0.25s var(--ease), top 0.25s var(--ease);
}

.nav-toggle span:first-child {
  top: 0.9rem;
}

.nav-toggle span:last-child {
  top: 1.55rem;
}

.site-header.is-open .nav-toggle span:first-child {
  top: 1.22rem;
  transform: rotate(45deg);
}

.site-header.is-open .nav-toggle span:last-child {
  top: 1.22rem;
  transform: rotate(-45deg);
}

.site-nav {
  display: flex;
  gap: 1.75rem;
  align-items: center;
}

.site-nav a {
  font-family: var(--display);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
  position: relative;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  color: var(--ink);
}

.site-nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -0.45rem;
  height: 2px;
  background: var(--accent);
}

@media (max-width: 799px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    background: var(--paper);
    flex-direction: column;
    justify-content: center;
    gap: 1.5rem;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease);
    z-index: 55;
  }

  .site-header.is-open .site-nav {
    transform: translateX(0);
  }

  .site-nav a {
    font-size: clamp(2rem, 8vw, 3rem);
    letter-spacing: -0.03em;
    text-transform: none;
    color: var(--ink);
  }

  .site-nav a[aria-current="page"]::after {
    bottom: -0.2rem;
  }
}

@media (min-width: 800px) {
  .nav-toggle {
    display: none;
  }
}

body.nav-open {
  overflow: hidden;
}

/* ========== Shared layout ========== */

main {
  padding-top: var(--header-h);
}

.wrap {
  width: min(100% - 2 * var(--pad), var(--max));
  margin-inline: auto;
}

.kicker {
  font-family: var(--display);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
  line-height: 1.45;
}

.lede {
  font-size: 1.2rem;
  color: var(--mute);
  max-width: 42rem;
}

.section {
  padding: clamp(3.5rem, 8vw, 6.5rem) 0;
  position: relative;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 2rem;
  border-top: 1px solid var(--ink);
  padding-top: 1rem;
}

.section-head h2 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.section-head a {
  font-family: var(--display);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

.page-hero {
  padding: clamp(3rem, 8vw, 5.5rem) 0 2rem;
  position: relative;
  overflow: hidden;
}

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

.page-hero h1 {
  font-size: clamp(2.8rem, 8vw, 5.5rem);
}

.page-hero .lede {
  margin-top: 1.25rem;
}

.rule {
  height: 1px;
  background: var(--rule);
  border: 0;
  margin: 0;
}

.site-footer {
  border-top: 1px solid var(--ink);
  padding: 1.5rem var(--pad);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--display);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
}

/* Geometric plane */

.plane {
  background: var(--plane);
  border: 1px solid var(--ink);
  position: relative;
}

.plane::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  width: 11px;
  height: 11px;
  border-top: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
  pointer-events: none;
}

/* Reveal (once) */

.reveal {
  opacity: 0;
  translate: 0 22px;
  transition: opacity 0.7s var(--ease), translate 0.7s var(--ease);
}

.reveal.in-view {
  opacity: 1;
  translate: 0;
}

/* ========== Home hero ========== */

.hero {
  position: relative;
  min-height: min(calc(100svh - var(--header-h)), 46rem);
  overflow: hidden;
  display: grid;
  align-items: center;
  padding: 2rem 0 4rem;
}

.hero-floor {
  position: absolute;
  left: -12%;
  right: -12%;
  top: 38%;
  height: 130%;
  background-image:
    linear-gradient(to right, var(--rule) 1px, transparent 1px),
    linear-gradient(to bottom, var(--rule) 1px, transparent 1px);
  background-size: 52px 52px;
  transform: perspective(520px) rotateX(58deg);
  transform-origin: center top;
  pointer-events: none;
  opacity: 0.5;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
  contain: paint;
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.hero-copy h1 {
  font-size: clamp(2.6rem, 8vw, 5.4rem);
  max-width: 12ch;
}

.hero-copy .line {
  width: 4.5rem;
  height: 3px;
  background: var(--accent);
  margin: 1.25rem 0 0;
}

.hero-gem-wrap {
  position: relative;
  justify-self: center;
  width: min(78vw, 420px);
}

.hero-gem {
  width: 100%;
  aspect-ratio: 1;
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  overflow: hidden;
  background: #000;
}

.hero-gem img {
  width: 165%;
  height: 165%;
  object-fit: cover;
  object-position: 0% 100%;
  margin: -12% 0 0 -8%;
}

.hero-sig {
  position: absolute;
  width: 58%;
  left: 21%;
  top: 34%;
  pointer-events: none;
  filter: drop-shadow(0 8px 18px rgba(0, 0, 0, 0.45));
}

@media (min-width: 800px) {
  .hero-inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
  }

  .hero-gem-wrap {
    width: min(100%, 480px);
    justify-self: end;
  }
}

/* ========== Portals ========== */

.portals {
  display: grid;
  gap: 1.25rem;
}

.portal {
  display: grid;
  grid-template-rows: auto auto;
  overflow: hidden;
  color: inherit;
  transform-origin: 50% 80%;
  transition: transform 0.45s var(--ease);
}

.portal-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #111;
}

.portal-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}

.portal-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 1rem 1.15rem 1.1rem;
  font-family: var(--display);
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.portal-label span {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--mute);
}

@media (min-width: 800px) {
  .portals {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    perspective: 900px;
    transform-style: preserve-3d;
  }

  .portal:first-child {
    transform: rotateY(11deg) rotateX(3deg);
  }

  .portal:last-child {
    transform: rotateY(-11deg) rotateX(3deg);
  }

  .portal:hover {
    transform: rotateY(0) rotateX(0) translateY(-6px);
  }

  .portal:hover .portal-media img {
    transform: scale(1.04);
  }
}

/* ========== About ========== */

#about {
  scroll-margin-top: calc(var(--header-h) + 0.75rem);
}

.about-grid {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.about-photo {
  overflow: hidden;
}

.about-photo img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: 50% 15%;
  filter: grayscale(0.15);
}

.about-copy p + p {
  margin-top: 1rem;
}

@media (min-width: 800px) {
  .about-grid {
    grid-template-columns: 0.42fr 0.58fr;
    gap: 3.5rem;
    align-items: center;
  }

  .about-photo {
    transform: perspective(1200px) rotateY(6deg);
  }
}

/* ========== Archive cards ========== */

.archive-grid {
  display: grid;
  gap: 1.25rem;
}

.archive-card {
  display: grid;
  color: inherit;
  overflow: hidden;
  transition: transform 0.35s var(--ease);
}

.archive-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.archive-card .copy {
  padding: 1.1rem 1.2rem 1.3rem;
}

.archive-card .copy .meta {
  font-family: var(--display);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 0.35rem;
}

.archive-card .copy h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.archive-card .copy p {
  color: var(--mute);
  font-size: 1rem;
}

@media (min-width: 800px) {
  .archive-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.75rem;
  }

  .archive-card:hover {
    transform: translateY(-4px);
  }
}

/* ========== Research ========== */

.research-lead {
  display: grid;
  gap: 2rem;
  margin-bottom: 3rem;
}

.research-lead img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: 50% 30%;
}

.papers {
  display: grid;
  gap: 1.5rem;
}

.paper {
  display: grid;
  color: inherit;
  overflow: hidden;
  transition: transform 0.35s var(--ease);
}

.paper img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: top;
  background: #fff;
}

.paper .copy {
  padding: 1.1rem 1.2rem 1.3rem;
}

.paper .copy .meta {
  font-family: var(--display);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mute);
  margin-bottom: 0.4rem;
}

.paper .copy h2 {
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  letter-spacing: -0.02em;
}

.paper .copy .go {
  display: inline-block;
  margin-top: 0.7rem;
  font-family: var(--display);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

@media (min-width: 800px) {
  .research-lead {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
  }

  .research-lead .plane {
    transform: perspective(1200px) rotateY(-5deg);
  }

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

  .paper:nth-child(odd) {
    transform: translateY(1.25rem);
  }

  .paper:hover,
  .paper:nth-child(odd):hover {
    transform: translateY(0.4rem);
  }
}

/* ========== Art gallery ========== */

.art-intro {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  align-items: end;
  margin-bottom: 2rem;
}

.gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.65rem;
}

.gallery-item {
  display: block;
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--ink);
  background: #000;
  cursor: zoom-in;
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.gallery-item img[src*="landing"] {
  object-position: 0% 100%;
}

.gallery-item:hover img,
.gallery-item:focus-visible img {
  transform: scale(1.04);
}

@media (min-width: 800px) {
  .gallery {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.85rem;
  }

  .gallery-item:nth-child(3n+1) {
    transform: translateY(10px) rotate(-0.4deg);
  }

  .gallery-item:nth-child(3n+2) {
    transform: translateY(-6px);
  }

  .gallery-item:nth-child(3n) {
    transform: translateY(14px) rotate(0.4deg);
  }
}

/* ========== Stage / slider ========== */

.stage {
  position: fixed;
  inset: 0;
  z-index: 80;
  background: var(--stage);
  color: var(--stage-ink);
  display: none;
  grid-template-rows: auto 1fr auto;
  padding: 0.75rem 0 0;
}

.stage.is-open {
  display: grid;
}

.stage-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.4rem var(--pad);
  font-family: var(--display);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.stage-close,
.stage-nav {
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid color-mix(in srgb, var(--stage-ink) 40%, transparent);
  color: var(--stage-ink);
  font-size: 1.2rem;
  line-height: 1;
}

.stage-close:hover,
.stage-nav:hover {
  border-color: var(--stage-ink);
}

.stage-viewport {
  position: relative;
  perspective: 1400px;
  display: grid;
  place-items: center;
  min-height: 0;
  overflow: visible;
}

.stage-frame {
  position: relative;
  width: min(92vw, 920px);
  height: min(68vh, 680px);
  transform-style: preserve-3d;
}

.stage-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.45s var(--ease), opacity 0.45s var(--ease);
  user-select: none;
  -webkit-user-drag: none;
}

.stage-img.is-current {
  transform: translateX(0) rotateY(0) translateZ(0);
  opacity: 1;
  z-index: 2;
}

.stage-img.is-prev,
.stage-img.is-next {
  opacity: 0.4;
  z-index: 1;
  pointer-events: none;
}

.stage-img.is-prev {
  transform: translateX(-58%) rotateY(26deg) translateZ(-140px);
}

.stage-img.is-next {
  transform: translateX(58%) rotateY(-26deg) translateZ(-140px);
}

.stage-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
}

.stage-nav.prev {
  left: var(--pad);
}

.stage-nav.next {
  right: var(--pad);
}

.stage-caption {
  text-align: center;
  font-family: var(--display);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.35rem var(--pad) 0.5rem;
}

.stage-strip {
  display: flex;
  gap: 0.4rem;
  overflow-x: auto;
  padding: 0.5rem var(--pad) 1rem;
  scrollbar-width: thin;
}

.stage-strip button {
  flex: 0 0 auto;
  width: 3.4rem;
  height: 3.4rem;
  border: 1px solid transparent;
  opacity: 0.45;
}

.stage-strip button.is-active {
  opacity: 1;
  border-color: var(--stage-ink);
}

.stage-strip img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 799px) {
  .stage-img.is-prev,
  .stage-img.is-next {
    display: none;
  }

  .stage-nav {
    width: 2.2rem;
    height: 2.2rem;
  }
}

/* ========== Project detail ========== */

.prose {
  max-width: 42rem;
  margin: 0 auto 2.5rem;
}

.prose p + p {
  margin-top: 1rem;
}

.shot {
  margin: 2rem auto;
  max-width: 52rem;
}

.shot img {
  width: 100%;
  border: 1px solid var(--ink);
}

.shot p {
  margin-top: 0.7rem;
  color: var(--mute);
  font-size: 1rem;
}

.ext-link {
  display: inline-block;
  margin-top: 1rem;
  font-family: var(--display);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  border-bottom: 1px solid var(--accent);
}

/* ========== Reduced motion ========== */

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

  .reveal {
    opacity: 1;
    translate: 0;
    transition: none;
  }

  .hero-floor {
    transform: none;
    opacity: 0.25;
  }

  .portal,
  .portal:first-child,
  .portal:last-child,
  .about-photo,
  .research-lead .plane,
  .gallery-item:nth-child(3n+1),
  .gallery-item:nth-child(3n+2),
  .gallery-item:nth-child(3n),
  .paper:nth-child(odd) {
    transform: none;
  }

  .portal:hover,
  .archive-card:hover,
  .paper:hover,
  .paper:nth-child(odd):hover {
    transform: none;
  }

  .stage-img {
    transition: opacity 0.2s linear;
  }

  .stage-img.is-prev,
  .stage-img.is-next {
    display: none;
  }
}