.hero {
  position: relative;
  padding-block: clamp(64px, 10vw, 120px) clamp(48px, 6vw, 80px);
  overflow: hidden;
}

.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-7);
}

@media (min-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr 1fr;
    align-items: end;
  }
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-display);
  line-height: 0.92;
  letter-spacing: -0.04em;
  font-weight: 500;
}

.hero__title em {
  font-style: italic;
  color: var(--color-text-muted);
}

.hero__intro {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  max-width: 54ch;
}

.hero__lead {
  font-size: var(--text-lead);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.hero__disciplines {
  display: grid;
  grid-template-columns: repeat(2, auto);
  gap: var(--space-2) var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hero__discipline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
}

.hero__discipline::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: currentColor;
}

.hero__discipline--art::before { background-color: #E85D4E; }
.hero__discipline--music::before { background-color: #7C5CFF; }
.hero__discipline--cfd::before { background-color: #00A3C4; }
.hero__discipline--code::before { background-color: #F59E0B; }
.hero__discipline--notes::before { background-color: #10B981; }

.hero__thread-start {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: var(--thread-width);
  height: clamp(64px, 10vw, 120px);
  background: linear-gradient(to bottom, var(--color-line), var(--color-text));
  transform: translateX(-50%);
  opacity: 0.5;
}

@media (max-width: 1023px) {
  .hero__thread-start {
    display: none;
  }
}

/* Timeline */
.timeline {
  position: relative;
  padding-block: var(--space-7) var(--space-10);
}

.timeline__thread {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: var(--thread-width);
  background: linear-gradient(
    to bottom,
    transparent 0%,
    var(--color-line) 5%,
    var(--color-line) 95%,
    transparent 100%
  );
  transform: translateX(-50%);
  overflow: hidden;
}

.timeline__thread::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--thread-progress, 0%);
  background: linear-gradient(
    to bottom,
    var(--color-accent) 0%,
    var(--color-text) 100%
  );
  transition: height 0.1s linear;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .timeline__thread::after {
    box-shadow: 0 0 6px color-mix(in srgb, var(--color-accent) 50%, transparent);
  }
}

:root[data-theme="dark"] .timeline__thread::after {
  box-shadow: 0 0 6px color-mix(in srgb, var(--color-accent) 50%, transparent);
}

@media (max-width: 1023px) {
  .timeline__thread {
    left: 24px;
    transform: none;
  }
}

.timeline__year {
  position: relative;
  z-index: 2;
  margin-bottom: var(--space-8);
}

.timeline__year-label {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1;
  color: var(--color-text);
}

@media (max-width: 1023px) {
  .timeline__year-label {
    justify-content: flex-start;
    padding-left: 48px;
  }
}

.timeline__year-label::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: var(--color-paper);
  border: 2px solid var(--color-text);
  transform: translate(-50%, -50%);
  transition: var(--theme-transition);
}

.timeline__year-label::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-text);
  transform: translate(-50%, -50%);
  transition: var(--theme-transition);
}

@media (max-width: 1023px) {
  .timeline__year-label::before,
  .timeline__year-label::after {
    left: 24px;
    transform: translate(-50%, -50%);
  }
}

.timeline__entries {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7) var(--grid-gutter);
}

@media (max-width: 1023px) {
  .timeline__entries {
    grid-template-columns: 1fr;
    padding-left: 48px;
  }
}

.timeline__entry,
.masonry__item,
.cfd-card {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.timeline__entry.is-visible,
.masonry__item.is-visible,
.cfd-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline__entry.is-hidden,
.masonry__item.is-hidden,
.cfd-card.is-hidden {
  display: none;
}

.timeline__entry {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-width: 520px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

.timeline__entry--left {
  justify-self: end;
  text-align: right;
  align-items: flex-end;
}

.timeline__entry--right {
  justify-self: start;
  text-align: left;
  align-items: flex-start;
}

@media (max-width: 1023px) {
  .timeline__entry--left,
  .timeline__entry--right {
    justify-self: start;
    text-align: left;
    align-items: flex-start;
  }
}

.timeline__entry-media {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-line);
}

.timeline__entry-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.timeline__entry:hover .timeline__entry-media img {
  transform: scale(1.02);
}

.timeline__entry-marker {
  position: absolute;
  top: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-paper);
  border: 1px solid var(--color-text);
  transform: translateY(-50%);
}

.timeline__entry--left .timeline__entry-marker {
  right: -28px;
}

.timeline__entry--right .timeline__entry-marker {
  left: -28px;
}

@media (max-width: 1023px) {
  .timeline__entry-marker {
    left: -32px !important;
    right: auto !important;
  }
}

.timeline__entry-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.timeline__entry-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.timeline__entry-title {
  font-size: clamp(18px, 1.8vw, 24px);
  line-height: 1.25;
  font-weight: 500;
}

.timeline__entry-excerpt {
  font-size: var(--text-small);
  line-height: 1.55;
  color: var(--color-text-muted);
}

/* Section landing: shared */
.section-hero {
  padding-block: var(--space-9) var(--space-7);
}

.section-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 1024px) {
  .section-hero__inner {
    grid-template-columns: 1fr 1fr;
    align-items: end;
  }
}

.section-hero__head {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.section-hero__title {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  line-height: 1.0;
  letter-spacing: -0.03em;
  font-weight: 500;
}

.section-hero__count {
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Art gallery */
.art-gallery {
  padding-block: var(--space-7) var(--space-10);
}

.masonry {
  columns: 1;
  column-gap: var(--grid-gutter);
}

@media (min-width: 768px) {
  .masonry {
    columns: 2;
  }
}

@media (min-width: 1200px) {
  .masonry {
    columns: 3;
  }
}

.masonry__item {
  break-inside: avoid;
  margin-bottom: var(--grid-gutter);
}

.art-card__media {
  position: relative;
  overflow: hidden;
  background-color: var(--color-line);
}

.art-card__media img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--duration-slow) var(--ease-out);
}

.art-card:hover .art-card__media img {
  transform: scale(1.02);
}

.art-card__body {
  padding-top: var(--space-3);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
}

.art-card__title {
  font-size: var(--text-small);
  font-weight: 500;
}

.art-card__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.art-card__view {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: var(--space-4);
  background: linear-gradient(to top, rgba(0,0,0,0.35), transparent 60%);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.art-card:hover .art-card__view {
  opacity: 1;
}

.art-card__view-text {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
}

/* CFD Lab */
.cfd-index {
  padding-block: var(--space-7) var(--space-10);
}

.cfd-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .cfd-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .cfd-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.cfd-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-line);
  background-color: var(--color-surface);
  transition: border-color var(--duration-fast) var(--ease-out),
              transform var(--duration-fast) var(--ease-out);
}

.cfd-card:hover {
  border-color: var(--color-text);
  transform: translateY(-2px);
}

.cfd-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-line);
  border-bottom: 1px solid var(--color-line);
}

.cfd-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cfd-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-5);
  flex: 1;
}

.cfd-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-3);
}

.cfd-card__title {
  font-size: var(--text-h3);
  line-height: 1.25;
  font-weight: 500;
}

.cfd-card__goal {
  font-size: var(--text-small);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.cfd-card__params {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-line);
}

.cfd-card__param {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.cfd-card__param-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.cfd-card__param-value {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
}

.cfd-card__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: var(--space-4);
}

.cfd-card__date {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
}

/* About */
.about-page {
  padding-block: var(--space-9) var(--space-10);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 1024px) {
  .about-grid {
    grid-template-columns: 4fr 8fr;
  }
}

.about-bio {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.about-bio__name {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  line-height: 1.05;
  font-weight: 500;
}

.about-bio__text {
  font-size: var(--text-lead);
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: 48ch;
}

.about-contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-line);
}

.about-contact__label {
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.about-contact__value {
  font-family: var(--font-mono);
  font-size: var(--text-body);
}

.about-history {
  display: flex;
  flex-direction: column;
  gap: var(--space-7);
}

.about-section__title {
  font-size: var(--text-h3);
  font-weight: 500;
  margin-bottom: var(--space-5);
}

.experience-list {
  display: flex;
  flex-direction: column;
}

.experience-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding-block: var(--space-5);
  border-top: 1px solid var(--color-line);
}

@media (min-width: 768px) {
  .experience-item {
    grid-template-columns: 2fr 1fr 3fr;
    align-items: baseline;
  }
}

.experience-item__role {
  font-weight: 500;
}

.experience-item__org {
  color: var(--color-text-muted);
}

.experience-item__period {
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.skill-groups {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 768px) {
  .skill-groups {
    grid-template-columns: repeat(2, 1fr);
  }
}

.skill-group__title {
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.skill-group__items {
  font-size: var(--text-body);
  line-height: 1.7;
  color: var(--color-text-muted);
}

/* =========================================================
   Detail pages
   ========================================================= */

/* Shared detail hero */
.detail-hero {
  padding-block: var(--space-7) var(--space-6);
}

.detail-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 1024px) {
  .detail-hero__inner--art,
  .detail-hero__inner--music {
    grid-template-columns: 5fr 7fr;
  }

  .detail-hero__inner--cfd,
  .detail-hero__inner--project {
    grid-template-columns: 7fr 5fr;
  }
}

.detail-media {
  position: relative;
  width: 100%;
  background-color: var(--color-line);
  overflow: hidden;
}

.detail-media img,
.detail-media video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.detail-media--art {
  max-height: calc(100dvh - 120px);
}

.detail-media--cover {
  aspect-ratio: 1 / 1;
  max-width: 560px;
}

/* Artwork detail */
.artwork-detail__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 1024px) {
  .artwork-detail__layout {
    grid-template-columns: 8fr 4fr;
  }
}

.artwork-detail__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

@media (min-width: 1024px) {
  .artwork-detail__info {
    position: sticky;
    top: calc(var(--header-height) + var(--space-5));
    align-self: start;
  }
}

.artwork-detail__title {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  line-height: 1.05;
  font-weight: 500;
}

.artwork-detail__meta-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-line);
}

.artwork-detail__meta-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.artwork-detail__meta-label {
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

:lang(zh) .artwork-detail__meta-label {
  text-transform: none;
  letter-spacing: 0.02em;
}

.artwork-detail__meta-value {
  font-size: var(--text-body);
}

.artwork-detail__description {
  font-size: var(--text-body);
  line-height: 1.75;
  max-width: 680px;
}

:lang(zh) .artwork-detail__description {
  line-height: 1.8;
}

.artwork-detail__description p + p {
  margin-top: var(--space-4);
}

.detail-section {
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-line);
}

.detail-section__title {
  font-size: var(--text-h3);
  font-weight: 500;
  margin-bottom: var(--space-5);
}

.detail-image-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gutter);
}

@media (min-width: 768px) {
  .detail-image-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .detail-image-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.detail-image-grid__item {
  position: relative;
  overflow: hidden;
  background-color: var(--color-line);
}

.detail-image-grid__item img {
  width: 100%;
  height: auto;
  display: block;
}

.process-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  counter-reset: process;
}

.process-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
}

.process-step::before {
  counter-increment: process;
  content: counter(process, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-muted);
  width: 32px;
}

.process-step__title {
  font-weight: 500;
  margin-bottom: var(--space-1);
}

.process-step__text {
  font-size: var(--text-small);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.detail-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  padding-block: var(--space-7);
  border-top: 1px solid var(--color-line);
}

.detail-nav__link {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  transition: border-color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
}

.detail-nav__link:hover {
  border-color: var(--color-text);
  background-color: var(--color-surface);
}

.detail-nav__link--next {
  text-align: right;
  align-items: flex-end;
}

.detail-nav__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

:lang(zh) .detail-nav__label {
  text-transform: none;
  letter-spacing: 0.02em;
}

.detail-nav__title {
  font-weight: 500;
}

/* Music detail */
.music-detail__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.music-detail__title {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  line-height: 1.0;
  font-weight: 500;
}

.music-detail__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.player {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background-color: var(--color-surface);
}

.player__play {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  padding: 0;
  background: var(--color-text);
  color: var(--color-paper);
  border: none;
  border-radius: 50%;
  cursor: pointer;
}

.player__waveform {
  flex: 1;
  height: 48px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-line) 0,
    var(--color-line) 2px,
    transparent 2px,
    transparent 6px
  );
  border-radius: var(--radius-small);
  opacity: 0.6;
}

.tracklist {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-line);
}

.tracklist__item {
  display: grid;
  grid-template-columns: 44px 1fr auto auto;
  align-items: center;
  gap: var(--space-4);
  min-height: 64px;
  padding-block: var(--space-3);
  border-bottom: 1px solid var(--color-line);
}

.tracklist__number {
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.tracklist__title {
  font-weight: 500;
}

.tracklist__duration {
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.tracklist__play {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-line);
  border-radius: 50%;
  cursor: pointer;
  color: var(--color-text);
}

.tracklist__play:disabled,
.tracklist__play.is-unavailable {
  opacity: 0.5;
  cursor: not-allowed;
  border-color: var(--color-line);
  color: var(--color-text-muted);
}

.tracklist__play svg {
  width: 12px;
  height: 12px;
}

.credits-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 768px) {
  .credits-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.credit {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.credit__role {
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

:lang(zh) .credit__role {
  text-transform: none;
  letter-spacing: 0.02em;
}

.streaming-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* Player states */
.player__progress {
  flex: 1;
  min-width: 0;
  height: 24px;
  padding: 0;
  margin: 0;
  background: transparent;
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
}

.player__progress::-webkit-slider-runnable-track {
  height: 4px;
  background: var(--color-line);
  border-radius: 2px;
}

.player__progress::-moz-range-track {
  height: 4px;
  background: var(--color-line);
  border-radius: 2px;
}

.player__progress::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  margin-top: -4px;
  background: var(--color-text);
  border: none;
  border-radius: 50%;
}

.player__progress::-moz-range-thumb {
  width: 12px;
  height: 12px;
  background: var(--color-text);
  border: none;
  border-radius: 50%;
}

.player__progress:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.player__progress:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.player__status {
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  color: var(--color-text-muted);
  white-space: nowrap;
}

.player__time {
  min-width: 3.5ch;
  text-align: right;
}

.player__icon--pause {
  display: none;
}

.player.is-playing .player__icon--play {
  display: none;
}

.player.is-playing .player__icon--pause {
  display: block;
}

.player.is-unavailable .player__play,
.player.is-error .player__play,
.player.is-loading .player__play {
  background-color: var(--color-text-muted);
  opacity: 0.55;
  cursor: not-allowed;
}

.player__play:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.player.is-loading .player__progress::-webkit-slider-runnable-track {
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-line) 0%);
  background-size: 200% 100%;
  animation: player-loading 1.2s infinite linear;
}

@keyframes player-loading {
  0% { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

.player__fallback {
  flex: 1 1 100%;
  min-width: 0;
  height: 44px;
}

/* CFD detail */
.cfd-detail__summary {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  padding: var(--space-6);
  border: 1px solid var(--color-line);
  background-color: var(--color-surface);
  border-radius: var(--radius-small);
}

.cfd-detail__summary-title {
  font-size: var(--text-h3);
  font-weight: 500;
}

.param-table {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background-color: var(--color-line);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  overflow: hidden;
}

@media (min-width: 768px) {
  .param-table {
    grid-template-columns: minmax(160px, 1fr) 2fr;
  }
}

.param-table__label,
.param-table__value {
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-paper);
}

.param-table__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

:lang(zh) .param-table__label {
  text-transform: none;
  letter-spacing: 0.02em;
}

.param-table__value {
  font-family: var(--font-mono);
  font-size: var(--text-small);
}

.cfd-detail__body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.cfd-detail__body > * {
  min-width: 0;
}

@media (min-width: 1024px) {
  .cfd-detail__body {
    grid-template-columns: 3fr 9fr;
  }
}

.cfd-toc {
  display: none;
}

@media (min-width: 1024px) {
  .cfd-toc {
    display: block;
    position: sticky;
    top: calc(var(--header-height) + var(--space-5));
    align-self: start;
  }
}

.cfd-toc__title {
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-4);
}

:lang(zh) .cfd-toc__title {
  text-transform: none;
  letter-spacing: 0.02em;
}

.cfd-toc__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  border-left: 1px solid var(--color-line);
}

.cfd-toc__link {
  display: block;
  padding-left: var(--space-4);
  font-size: var(--text-small);
  color: var(--color-text-muted);
  border-left: 2px solid transparent;
  margin-left: -1px;
  transition: color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.cfd-toc__link:hover,
.cfd-toc__link[aria-current="true"] {
  color: var(--color-text);
  border-left-color: var(--color-accent);
}

.cfd-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  min-width: 0;
}

.cfd-section {
  scroll-margin-top: calc(var(--header-height) + var(--space-5));
  min-width: 0;
}

.cfd-section__title {
  font-size: var(--text-h2);
  font-weight: 500;
  margin-bottom: var(--space-4);
}

.cfd-section__text {
  font-size: var(--text-body);
  line-height: 1.75;
  max-width: var(--container-technical);
}

:lang(zh) .cfd-section__text {
  line-height: 1.8;
}

.cfd-section__text p + p {
  margin-top: var(--space-4);
}

.figure {
  margin-block: var(--space-6);
}

.figure__media {
  position: relative;
  background-color: var(--color-line);
  overflow: hidden;
}

.figure__media img {
  width: 100%;
  height: auto;
  display: block;
}

.figure__caption {
  padding-top: var(--space-3);
  font-size: var(--text-small);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.figure__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
}

.validation-table__wrapper {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  margin-block: var(--space-5);
}

.table-scroll-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.validation-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: var(--text-small);
}

.validation-table th,
.validation-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-line);
}

.validation-table th {
  position: sticky;
  top: 0;
  background-color: var(--color-paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

:lang(zh) .validation-table th {
  text-transform: none;
  letter-spacing: 0.02em;
}

.validation-table td {
  font-family: var(--font-mono);
}

.validation-table .pass {
  color: var(--color-success);
}

.validation-table .review {
  color: var(--color-warning);
}

.validation-table .fail {
  color: var(--color-error);
}

.data-downloads {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .data-downloads {
    grid-template-columns: repeat(2, 1fr);
  }
}

.data-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background-color: var(--color-surface);
}

.data-card__name {
  font-weight: 500;
}

.data-card__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
}

.discography {
  padding-block: var(--space-7) var(--space-10);
}

.discography__year {
  margin-bottom: var(--space-8);
}

.discography__year-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1;
  margin-bottom: var(--space-5);
}

.discography__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gutter);
}

@media (min-width: 560px) {
  .discography__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .discography__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1200px) {
  .discography__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.release-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

@media (max-width: 559px) {
  .release-card {
    flex-direction: row;
    align-items: flex-start;
  }
}

.release-card__cover {
  position: relative;
  flex-shrink: 0;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background-color: var(--color-line);
}

@media (max-width: 559px) {
  .release-card__cover {
    width: 128px;
  }
}

.release-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.release-card:hover .release-card__cover img {
  transform: scale(1.02);
}

.release-card__status {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
}

.release-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.release-card__title {
  font-size: var(--text-body);
  font-weight: 500;
  line-height: 1.3;
}

.release-card__meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
}

/* Project index */
.project-index {
  padding-block: var(--space-7) var(--space-10);
}

.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--grid-gutter);
}

@media (min-width: 768px) {
  .project-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.project-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  overflow: hidden;
  background-color: var(--color-paper);
  transition: transform var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.project-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-text-muted);
}

.project-card__media {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: var(--color-line);
  overflow: hidden;
}

.project-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.project-card:hover .project-card__media img {
  transform: scale(1.02);
}

.project-card__body {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  gap: var(--space-3);
  padding: var(--space-5);
}

.project-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.project-card__title {
  font-size: var(--text-h3);
  line-height: 1.25;
  font-weight: 500;
  margin-bottom: var(--space-1);
}

.project-card__title a {
  color: inherit;
}

.project-card__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-4);
  min-height: 44px;
}

.project-card__action {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-small);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  text-decoration: none;
  transition: background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

.project-card__action--primary {
  background-color: var(--color-text);
  color: var(--color-paper);
  border: 1px solid var(--color-text);
}

.project-card__action--primary:hover {
  background-color: var(--color-text-muted);
  border-color: var(--color-text-muted);
}

.project-card__action--secondary {
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-line);
}

.project-card__action--secondary:hover {
  background-color: var(--color-surface);
  border-color: var(--color-text-muted);
}

.project-card__github .status-tag {
  margin-left: var(--space-2);
}

.project-card__excerpt {
  font-size: var(--text-small);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.project-card__stack {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

.project-card__tech {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 10px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  color: var(--color-text-muted);
}

.project-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-line);
}

.project-card__link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.project-card:hover .project-card__link {
  color: var(--color-accent);
}

/* GitHub-centric project cards */
.project-card__github {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}

.project-card__github-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.project-card__stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.project-card__stat {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.project-card__topics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.project-card__topic {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 3px 8px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  color: var(--color-text-muted);
}

.project-card__snapshot {
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--color-text-muted);
}

/* Project detail GitHub metadata */
.repo-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-5);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.repo-meta__stat {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.repo-meta__topics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  width: 100%;
  margin-top: var(--space-2);
}

.repo-meta__topic {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 3px 10px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  color: var(--color-text-muted);
}

.project-detail__readme {
  font-size: var(--text-body);
  line-height: 1.75;
  color: var(--color-text-muted);
  max-width: var(--container-article);
}

.project-detail__readme p + p {
  margin-top: var(--space-4);
}

.project-release {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  padding: var(--space-4);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
}

@media (min-width: 768px) {
  .project-release {
    grid-template-columns: auto 1fr auto;
    align-items: center;
  }
}

.project-release__tag {
  font-family: var(--font-mono);
  font-weight: 500;
}

.project-release__date {
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.project-release__notes {
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

/* Note index */
.note-index {
  padding-block: var(--space-7) var(--space-10);
}

.note-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.note-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background-color: var(--color-paper);
  transition: background-color var(--duration-fast) var(--ease-out),
              border-color var(--duration-fast) var(--ease-out);
}

@media (min-width: 768px) {
  .note-card {
    grid-template-columns: 160px 1fr;
    align-items: baseline;
  }
}

.note-card:hover {
  background-color: var(--color-surface);
  border-color: var(--color-text-muted);
}

.note-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
}

.note-card__title {
  font-size: var(--text-h3);
  line-height: 1.3;
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.note-card__title a {
  color: inherit;
}

.note-card__excerpt {
  font-size: var(--text-small);
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: 60ch;
}

.note-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.note-card__tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Project/Note list placeholders remain as section-hero intro */
.project-detail__description {
  font-size: var(--text-lead);
  line-height: 1.55;
  color: var(--color-text-muted);
  max-width: 54ch;
}

.project-detail__visual {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: var(--color-line);
  overflow: hidden;
  border: 1px solid var(--color-line);
}

.project-detail__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .feature-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature {
  padding: var(--space-4);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
}

.feature__title {
  font-weight: 500;
  margin-bottom: var(--space-2);
}

.feature__text {
  font-size: var(--text-small);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.code-block {
  position: relative;
  margin-block: var(--space-5);
  background-color: var(--color-void);
  color: var(--color-void-text);
  border-radius: var(--radius-small);
  overflow: hidden;
}

.code-block__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-block__lang {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

:lang(zh) .code-block__lang {
  text-transform: none;
  letter-spacing: 0.02em;
}

.code-block__copy {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
}

.code-block pre {
  margin: 0;
  padding: var(--space-4);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
}

.benchmark-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-small);
  margin-block: var(--space-5);
}

.benchmark-table th,
.benchmark-table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--color-line);
}

.benchmark-table th {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

:lang(zh) .benchmark-table th {
  text-transform: none;
  letter-spacing: 0.02em;
}

/* Note detail */
.note-detail__header {
  padding-block: var(--space-8) var(--space-5);
  border-bottom: 1px solid var(--color-line);
}

.note-detail__title {
  font-family: var(--font-display);
  font-size: var(--text-h1);
  line-height: 1.0;
  font-weight: 500;
  margin-bottom: var(--space-4);
}

.note-detail__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.note-detail__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  padding-block: var(--space-6);
}

.note-detail__layout > * {
  min-width: 0;
}

@media (min-width: 1024px) {
  .note-detail__layout {
    grid-template-columns: 240px 1fr;
  }
}

.note-toc {
  display: block;
  padding: var(--space-4);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background-color: var(--color-surface);
}

@media (min-width: 1024px) {
  .note-toc {
    position: sticky;
    top: calc(var(--header-height) + var(--space-5));
    align-self: start;
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
  }
}

.note-toc__title {
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

:lang(zh) .note-toc__title {
  text-transform: none;
  letter-spacing: 0.02em;
}

.note-toc__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.note-toc__link {
  font-size: var(--text-small);
  color: var(--color-text-muted);
  transition: color var(--duration-fast) var(--ease-out);
}

.note-toc__link:hover,
.note-toc__link[aria-current="true"] {
  color: var(--color-text);
}

.note-article {
  font-size: var(--text-body);
  line-height: 1.75;
  max-width: var(--container-article);
  min-width: 0;
}

:lang(zh) .note-article {
  line-height: 1.8;
}

.note-article > * + * {
  margin-top: var(--space-5);
}

.note-article h2 {
  font-size: var(--text-h2);
  font-weight: 500;
  line-height: 1.15;
  margin-top: var(--space-9);
  margin-bottom: var(--space-4);
  scroll-margin-top: calc(var(--header-height) + var(--space-5));
}

.note-article h3 {
  font-size: var(--text-h3);
  font-weight: 500;
  line-height: 1.25;
  margin-top: var(--space-7);
  margin-bottom: var(--space-3);
  scroll-margin-top: calc(var(--header-height) + var(--space-5));
}

.note-article p {
  color: var(--color-text-muted);
}

.note-article strong {
  color: var(--color-text);
  font-weight: 500;
}

.note-article ul,
.note-article ol {
  margin-left: var(--space-5);
  color: var(--color-text-muted);
}

.note-article ul {
  list-style: disc;
}

.note-article ol {
  list-style: decimal;
}

.note-article li + li {
  margin-top: var(--space-2);
}

.note-article code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.1em 0.3em;
  background-color: var(--color-line);
  border-radius: var(--radius-small);
  color: var(--color-text);
}

.note-article .figure {
  margin-block: var(--space-7);
}

.note-article .figure__caption {
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.references {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-line);
}

.reference {
  font-size: var(--text-small);
  line-height: 1.55;
  color: var(--color-text-muted);
}

.reference__id {
  font-family: var(--font-mono);
  color: var(--color-text);
  margin-right: var(--space-2);
}

/* =========================================================
   Notes — Research template
   ========================================================= */

.note-detail--research .note-detail__header {
  border-bottom: none;
}

.note-detail__rail {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-5);
  padding-block: var(--space-4);
  margin-top: var(--space-5);
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: var(--text-meta);
  color: var(--color-text-muted);
}

.note-detail__rail a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: inherit;
}

.note-detail__rail a:hover {
  color: var(--color-accent);
}

.note-detail__rail-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
}

@media (max-width: 767px) {
  .note-detail__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
}

/* Numbered table of contents (Research) */
.note-toc__link {
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  padding-block: var(--space-1);
  min-height: 44px;
}

.note-toc__number {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  min-width: 32px;
  text-align: right;
}

.note-toc__link[aria-current="true"] {
  color: var(--color-accent);
  font-weight: 500;
}

.note-toc__link[aria-current="true"] .note-toc__number {
  color: var(--color-accent);
}

.note-toc__link:hover {
  color: var(--color-text);
}

/* Mobile TOC uses <details> */
.note-toc-details {
  display: block;
  margin-block: var(--space-5);
}

@media (min-width: 1024px) {
  .note-toc-details {
    display: none;
  }
}

.note-toc-details__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  background-color: var(--color-surface);
  font-family: var(--font-mono);
  font-size: var(--text-small);
  cursor: pointer;
}

.note-toc-details[open] .note-toc-details__summary {
  border-bottom-left-radius: 0;
  border-bottom-right-radius: 0;
}

.note-toc-details__content {
  padding: var(--space-4);
  border: 1px solid var(--color-line);
  border-top: none;
  border-bottom-left-radius: var(--radius-small);
  border-bottom-right-radius: var(--radius-small);
  background-color: var(--color-surface);
}

/* Research article body */
.note-article--research {
  max-width: var(--container-technical);
  counter-reset: section;
}

.note-article--research h2 {
  counter-increment: section;
  font-size: clamp(22px, 2.6vw, 36px);
  line-height: 1.25;
}

.note-article--research h2::before {
  content: counter(section, decimal-leading-zero) ".";
  font-family: var(--font-mono);
  font-size: 0.72em;
  color: var(--color-text-muted);
  margin-right: var(--space-3);
}

.note-article--research h3 {
  font-size: clamp(18px, 1.8vw, 25px);
}

/* Inline citation */
.citation {
  font-family: var(--font-mono);
  font-size: 0.82em;
  vertical-align: super;
  line-height: 0;
}

/* References with hanging indent and back-link */
.reference {
  padding-left: var(--space-7);
  text-indent: calc(-1 * var(--space-7));
}

.reference__id {
  display: inline-block;
  min-width: var(--space-7);
  text-align: right;
  margin-right: var(--space-2);
}

.reference__back {
  display: inline-block;
  margin-left: var(--space-3);
  font-size: 11px;
  white-space: nowrap;
}

/* Figure actions (download data/source) */
.figure__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.figure__action {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
}

.figure__action--unavailable {
  cursor: default;
  opacity: 0.6;
}

/* Data table with sticky header and CSV download */
.data-table__wrapper {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  margin-block: var(--space-5);
}

.data-table {
  width: 100%;
  min-width: 640px;
  border-collapse: collapse;
  font-size: var(--text-small);
}

.data-table caption {
  text-align: left;
  font-size: var(--text-small);
  margin-bottom: var(--space-3);
  color: var(--color-text);
}

.data-table th,
.data-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--color-line);
}

.data-table th {
  position: sticky;
  top: 0;
  background-color: var(--color-paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

:lang(zh) .data-table th {
  text-transform: none;
  letter-spacing: 0.02em;
}

.data-table td {
  font-family: var(--font-mono);
}

.data-table__footnote {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
}

/* Note type badge */
.note-badge {
  display: inline-flex;
  align-items: center;
  height: 22px;
  padding: 0 10px;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-small);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

:lang(zh) .note-badge {
  text-transform: none;
  letter-spacing: 0.02em;
}