:root {
  --bg: #fff;
  --text: #111;
  --secondary: #555;
  --muted: #8a8a8a;
  --line: #e5e5e5;
  --needs: #c98787;
  --margin: clamp(20px, 4.2vw, 72px);
  --section: clamp(88px, 12vw, 164px);
  --serif: "Times New Roman", Times, serif;
  --sans: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Noto Sans SC", sans-serif;
  --display: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.65;
}

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

a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

.optimized-picture {
  display: block;
}

.optimized-picture > img {
  width: 100%;
  height: inherit;
  max-height: inherit;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: start;
  padding: 26px var(--margin) 18px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-grid;
  gap: 2px;
  line-height: 1.15;
}

.brand__en {
  font-size: clamp(18px, 2vw, 26px);
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.brand__zh {
  font-size: clamp(15px, 1.5vw, 20px);
  color: var(--secondary);
}

.nav {
  display: flex;
  gap: clamp(14px, 2vw, 28px);
  align-items: center;
  font-family: var(--display);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.2;
}

.nav a {
  color: var(--secondary);
}

.nav a[aria-current="page"] {
  color: var(--text);
}

.page {
  min-height: 100vh;
  padding: 138px var(--margin) var(--section);
}

.page--home {
  padding-top: 0;
}

.page-title {
  margin: 0 0 68px;
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 500;
  line-height: 1.15;
}

.page-title span,
.eyebrow,
.meta,
.caption {
  color: var(--muted);
}

.research-title {
  font-size: clamp(38px, 5.2vw, 74px);
  line-height: 1.02;
  font-weight: 650;
  letter-spacing: 0;
}

.research-title span {
  color: var(--muted);
  font-size: 0.76em;
  font-weight: 500;
}

.needs-content {
  color: var(--needs) !important;
}

.section-title {
  margin: 0 0 34px;
  font-size: clamp(18px, 2vw, 24px);
  font-weight: 400;
}

.section-title span {
  color: var(--muted);
}

.hero {
  min-height: 100vh;
  position: relative;
  display: grid;
  place-items: center;
  padding: 0;
  overflow: hidden;
  background: #fff;
}

.hero__image {
  width: 100%;
  height: 100vh;
  max-height: none;
  object-fit: contain;
  filter: contrast(1.03);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: clamp(14px, 2vw, 24px);
  padding: 112px var(--margin) 72px;
  color: #fff;
  text-align: center;
  font-family: var(--display);
  text-shadow: 0 1px 18px rgba(0, 0, 0, 0.32);
}

.hero__overlay span {
  font-size: clamp(12px, 1.35vw, 18px);
  font-weight: 600;
  letter-spacing: 0.28em;
}

.hero__overlay h1 {
  max-width: 1040px;
  margin: 0;
  font-size: clamp(28px, 4.6vw, 68px);
  line-height: 1.02;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.hero__overlay p {
  max-width: 780px;
  margin: 0;
  font-size: clamp(20px, 3vw, 44px);
  line-height: 1.06;
  font-weight: 700;
  letter-spacing: 0.045em;
}

.featured {
  display: grid;
  gap: 32px;
  min-height: 100vh;
  padding: 42px var(--margin) 56px;
  align-content: center;
}

.featured-slider {
  position: relative;
  min-height: min(68vh, 720px);
}

.featured-slide {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: minmax(0, 0.76fr) minmax(170px, 0.24fr);
  gap: clamp(24px, 5vw, 70px);
  align-items: end;
  opacity: 0;
  pointer-events: none;
  transition: opacity 1200ms ease;
}

.featured-slide.is-active {
  opacity: 1;
  pointer-events: auto;
}

.featured__image {
  width: 100%;
  height: min(68vh, 720px);
  object-fit: contain;
}

.featured-slide__meta {
  padding-bottom: clamp(10px, 4vh, 48px);
}

.work-meta {
  display: grid;
  gap: 4px;
  font-size: 13px;
}

.work-meta__title {
  color: var(--text);
}

.work-meta__detail {
  color: var(--muted);
}

.series-index,
.research-index {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px 30px;
  margin-bottom: 96px;
  padding-bottom: 34px;
  border-bottom: 1px solid var(--line);
}

.series-section {
  margin-bottom: var(--section);
  scroll-margin-top: 160px;
}

.series-heading {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 38px;
  font-weight: 400;
}

.work-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(48px, 7vw, 98px) clamp(36px, 7vw, 92px);
}

.work-card img {
  width: 100%;
  max-height: 62vh;
  object-fit: contain;
  background: #fafafa;
}

.work-card .work-meta {
  margin-top: 14px;
}

.image-placeholder {
  display: grid;
  place-items: center;
  min-height: 260px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: #fafafa;
}

.video-section {
  display: grid;
  gap: 52px;
}

.video-featured-grid,
.video-secondary-grid,
.video-minimal-list {
  display: grid;
  gap: clamp(34px, 5vw, 72px);
}

.video-featured-card {
  display: grid;
  grid-template-columns: minmax(0, 0.68fr) minmax(260px, 0.32fr);
  gap: clamp(34px, 6vw, 82px);
  align-items: end;
}

.video-featured-card__image,
.video-card__image {
  width: 100%;
  background: #fafafa;
  object-fit: cover;
}

.video-featured-card__image {
  aspect-ratio: 16 / 9;
}

.video-featured-card__meta {
  display: grid;
  gap: 18px;
}

.video-featured-card__meta p {
  margin: 0;
  color: var(--secondary);
}

.video-secondary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.video-card {
  display: grid;
  gap: 14px;
}

.video-card__image {
  aspect-ratio: 16 / 9;
}

.video-minimal-list {
  border-top: 1px solid var(--line);
}

.video-minimal-row {
  display: grid;
  grid-template-columns: minmax(170px, 0.28fr) minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.video-minimal-row__media {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #f6f6f6;
}

.video-minimal-row div {
  display: grid;
  gap: 4px;
}

.video-minimal-row strong {
  font-weight: 400;
}

.video-minimal-row span {
  color: var(--muted);
}

.detail-layout {
  display: grid;
  gap: 44px;
}

.detail-layout--without-image {
  padding-top: clamp(20px, 5vw, 72px);
}

.detail-image {
  justify-self: center;
  max-height: 74vh;
  object-fit: contain;
}

.detail-info {
  max-width: 720px;
  display: grid;
  gap: 18px;
}

.definition-list {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 5px 24px;
  margin: 0;
  font-size: 14px;
}

.definition-list dt {
  color: var(--muted);
}

.definition-list dd {
  margin: 0;
}

.prev-next {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 54px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--secondary);
}

.work-extra {
  display: grid;
  gap: 24px;
  margin-top: 54px;
}

.detail-gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
}

.detail-gallery img,
.detail-gallery picture,
.installation-gallery img,
.installation-gallery picture {
  width: 100%;
  object-fit: contain;
  background: #fafafa;
}

.installation-gallery {
  display: grid;
  gap: 28px;
}

.video-detail {
  display: grid;
  gap: clamp(48px, 7vw, 92px);
}

.video-hero {
  display: grid;
  grid-template-columns: minmax(260px, 0.42fr) minmax(0, 0.58fr);
  gap: clamp(38px, 7vw, 92px);
  align-items: end;
}

.video-poster {
  width: 100%;
  max-height: 82vh;
  object-fit: contain;
}

.video-hero__text {
  display: grid;
  gap: 26px;
}

.video-wide-poster,
.video-detail-cover {
  width: 100%;
  max-height: 78vh;
  object-fit: contain;
  background: #fafafa;
}

.video-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.62fr) minmax(260px, 0.38fr);
  gap: clamp(34px, 6vw, 82px);
  align-items: end;
}

.video-stills {
  display: grid;
  gap: 24px;
}

.video-stills-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.video-stills-grid img,
.video-stills-grid picture {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 16 / 9;
  background: #fafafa;
}

.video-player-block {
  display: grid;
  gap: 24px;
}

.video-player-block video {
  width: 100%;
  max-height: 82vh;
  background: #000;
}

.bilingual-text {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(34px, 6vw, 82px);
  max-width: 1120px;
}

.bilingual-text p {
  margin: 0;
  color: var(--secondary);
}

.archive-link {
  margin: 0;
  color: var(--secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(240px, 0.38fr) minmax(0, 0.62fr);
  gap: clamp(42px, 7vw, 96px);
  align-items: start;
}

.portrait {
  width: 100%;
  max-height: 680px;
  object-fit: cover;
}

.text-stack {
  display: grid;
  gap: 70px;
  max-width: 760px;
}

.text-block {
  display: grid;
  gap: 18px;
}

.text-block p {
  margin: 0;
  color: var(--secondary);
}

.research-index {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.research-card {
  display: grid;
  grid-template-columns: minmax(0, 0.62fr) minmax(260px, 0.38fr);
  gap: clamp(34px, 6vw, 86px);
  align-items: end;
  padding: clamp(46px, 7vw, 94px) 0;
  border-top: 1px solid var(--line);
}

.research-card:last-child {
  border-bottom: 1px solid var(--line);
}

.research-card__image {
  width: 100%;
  max-height: 72vh;
  object-fit: cover;
  background: #fafafa;
}

.research-card__text {
  display: grid;
  gap: 14px;
}

.research-card__text span {
  color: var(--muted);
}

.research-card__text strong {
  font-family: var(--display);
  font-size: clamp(18px, 2vw, 26px) !important;
  font-weight: 600;
  line-height: 1.25;
}

.research-card__title-zh {
  font-family: var(--display);
  font-size: clamp(18px, 2vw, 26px) !important;
  font-weight: 500;
  line-height: 1.25;
  color: var(--muted);
}

.research-card__text p {
  margin: 0;
  color: var(--secondary);
}

.research-project {
  display: grid;
  gap: clamp(62px, 9vw, 132px);
}

.research-hero {
  display: grid;
  gap: 34px;
}

.research-hero > img,
.research-hero > picture {
  width: 100%;
  max-height: 82vh;
  object-fit: cover;
}

.research-hero__text {
  max-width: 900px;
}

.research-hero__text p {
  margin: 0;
  color: var(--secondary);
}

.research-artwork {
  width: min(100%, 1280px);
  justify-self: center;
  max-height: 86vh;
  object-fit: contain;
}

.research-two-column {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(38px, 7vw, 96px);
}

.research-two-column div,
.research-commentary {
  display: grid;
  gap: 18px;
}

.research-two-column p,
.research-commentary p {
  margin: 0;
  color: var(--secondary);
}

.research-commentary {
  max-width: 920px;
  padding-left: clamp(0px, 12vw, 180px);
}

.research-references {
  display: grid;
  gap: 30px;
}

.research-reference-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(22px, 4vw, 54px);
  align-items: start;
}

.research-reference {
  margin: 0;
}

.research-reference img,
.research-reference picture {
  width: 100%;
  object-fit: contain;
  background: #fafafa;
}

.research-reference--portrait img,
.research-reference--portrait picture {
  max-height: 180px;
}

.research-reference--large {
  grid-column: 1 / -1;
}

.research-reference--with-note {
  display: grid;
  grid-template-columns: minmax(110px, 180px) minmax(0, 1fr);
  gap: clamp(18px, 3vw, 34px);
  align-items: start;
}

.research-reference--with-note img,
.research-reference--with-note picture {
  width: 100%;
  max-height: 180px;
  justify-self: start;
}

.research-reference figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 12px;
}

.research-reference--with-note figcaption {
  margin-top: 0;
  display: grid;
  gap: 16px;
}

.research-reference figcaption span {
  display: block;
}

.research-reference figcaption em {
  display: block;
  color: var(--primary);
  font-style: normal;
  font-size: clamp(18px, 2.1vw, 26px);
  line-height: 1.65;
}

.research-reference figcaption small {
  display: block;
  color: var(--secondary);
  font-size: 13px;
  line-height: 1.7;
  max-width: 34em;
}

.research-details {
  max-width: 760px;
}

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

.archive-row {
  display: grid;
  grid-template-columns: 1fr 140px 130px;
  gap: 28px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  color: var(--secondary);
}

.archive-row strong {
  color: var(--text);
  font-weight: 400;
}

.research-body {
  max-width: 760px;
  display: grid;
  gap: 28px;
}

.research-body p {
  margin: 0;
  color: var(--secondary);
}

.reference-list {
  margin: 34px 0 0;
  padding: 0;
  list-style: decimal-leading-zero inside;
  color: var(--secondary);
}

.cv {
  max-width: 960px;
}

.cv-section {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 30px;
  padding: 34px 0;
  border-top: 1px solid var(--line);
}

.cv-section h2 {
  margin: 0;
  font-size: 16px;
  font-weight: 400;
}

.cv-entries {
  display: grid;
  gap: 12px;
}

.cv-entry {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 28px;
  color: var(--secondary);
}

.contact-list {
  max-width: 720px;
  border-top: 1px solid var(--line);
}

.contact-row {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 28px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.footer {
  padding: 40px var(--margin);
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .home-page .site-header {
    position: static;
  }

  .home-page .page--home {
    padding-top: 0;
  }

  .nav {
    flex-wrap: wrap;
  }

  .page {
    padding-top: 168px;
  }

  .hero {
    min-height: auto;
    place-items: start;
  }

  .hero__image {
    height: 75vw;
  }

  .hero__overlay {
    padding: 0 var(--margin);
  }

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

  .featured {
    min-height: auto;
    padding-top: 34px;
    padding-bottom: 48px;
  }

  .featured-slider {
    min-height: 62vh;
  }

  .featured-slide {
    grid-template-columns: 1fr;
    align-content: end;
  }

  .featured__image {
    height: 52vh;
  }

  .featured-slide__meta {
    padding-bottom: 0;
  }

  .series-index,
  .research-index,
  .work-grid,
  .video-secondary-grid,
  .video-featured-card,
  .video-hero,
  .video-detail-grid,
  .bilingual-text,
  .detail-gallery,
  .research-card,
  .research-two-column,
  .research-reference-grid {
    grid-template-columns: 1fr;
  }

  .research-reference--with-note {
    grid-template-columns: 1fr;
  }

  .archive-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .video-minimal-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  body {
    font-size: 14px;
  }

  .page-title {
    margin-bottom: 44px;
    font-size: 28px;
    line-height: 1.18;
  }

  .research-hero__text .page-title {
    font-size: 26px;
    line-height: 1.16;
  }

  .research-hero__text .page-title span {
    display: block;
    margin-top: 6px;
    font-size: 18px;
  }

  .research-hero__text .research-title {
    font-size: 34px;
    line-height: 1.04;
  }

  .research-hero__text .research-title span {
    display: block;
    margin-top: 8px;
    font-size: 21px;
    line-height: 1.18;
  }

  .site-header {
    padding-top: 20px;
  }

  .hero__image {
    width: 100%;
    height: 75vw;
  }

  .hero__overlay span {
    font-size: 11px;
    letter-spacing: 0.22em;
  }

  .hero__overlay h1 {
    font-size: 26px;
    line-height: 1.08;
    letter-spacing: 0.035em;
  }

  .hero__overlay p {
    font-size: 22px;
    line-height: 1.08;
    letter-spacing: 0.025em;
  }

  .featured {
    gap: 24px;
    padding-top: 28px;
  }

  .featured-slider {
    min-height: 58vh;
  }

  .featured__image {
    height: 48vh;
  }

  .definition-list,
  .cv-entry,
  .contact-row {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}