* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 76% 12%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 24rem),
    var(--bg);
  font-family: var(--font-sans);
}

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

button,
input {
  font: inherit;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: #111;
  background: var(--accent);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: none;
}

.lab-header,
.lab-footer,
main {
  width: min(100%, 1600px);
  margin-inline: auto;
}

.lab-header {
  display: flex;
  /* chrome-lock owns bar under journal-global-masthead */
  min-height: 43px;
  padding: 0;
  align-items: center;
  justify-content: flex-end;
  border-bottom: 1px solid var(--line);
}

.lab-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .02em;
}

.lab-brand em {
  padding-left: 9px;
  color: var(--accent);
  border-left: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 11px;
  font-style: normal;
  letter-spacing: .16em;
}

.lab-header nav,
.lab-footer nav {
  display: flex;
  gap: clamp(16px, 2.2vw, 34px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
}

.lab-header nav a:hover,
.lab-footer nav a:hover {
  color: var(--accent);
}

.lab-hero {
  display: grid;
  min-height: 670px;
  padding: clamp(72px, 9vw, 144px) var(--gutter) 52px;
  grid-template-columns: minmax(0, 1.2fr) minmax(360px, .8fr);
  grid-template-rows: 1fr auto;
  gap: 72px 8vw;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 22px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
}

.lab-hero h1 {
  max-width: 18em;
  margin: 0;
  font-size: clamp(44px, 4.8vw, 72px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.16;
  word-break: keep-all;
  overflow-wrap: break-word;
  text-wrap: pretty;
}

.lab-hero__dek {
  max-width: 680px;
  margin: 38px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 1.4vw, 22px);
  line-height: 1.78;
  word-break: keep-all;
}

.lab-stats {
  display: grid;
  margin: 0;
  align-self: end;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-strong);
  border-left: 1px solid var(--line);
}

.lab-stats div {
  min-height: 155px;
  padding: 24px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.lab-stats dt {
  font-family: var(--font-mono);
  font-size: clamp(35px, 4vw, 64px);
  font-weight: 500;
  letter-spacing: -.06em;
}

.lab-stats dd {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.lab-hero__note {
  grid-column: 1 / -1;
  max-width: 900px;
  margin: 0;
  color: var(--subtle);
  font-size: 13px;
  line-height: 1.7;
}

.lab-feature {
  display: grid;
  padding: clamp(80px, 8vw, 132px) var(--gutter);
  grid-template-columns: minmax(230px, .38fr) minmax(0, 1fr);
  gap: 7vw;
  border-bottom: 1px solid var(--line);
}

.section-heading {
  position: sticky;
  top: 28px;
  align-self: start;
}

.section-heading h2,
.sound-intro h2,
.catalog h2 {
  margin: 0;
  font-size: clamp(38px, 4.2vw, 66px);
  letter-spacing: -.055em;
  line-height: 1.2;
  word-break: keep-all;
  text-wrap: balance;
}

.section-heading > p:last-child {
  max-width: 260px;
  margin-top: 26px;
  color: var(--muted);
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  position: relative;
  min-height: 410px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--surface);
}

.feature-card:first-child {
  grid-column: 1 / -1;
  min-height: 540px;
}

.feature-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .68;
  transition: transform .6s ease, opacity .4s ease;
}

.feature-card::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(180deg, transparent 25%, rgba(4, 6, 9, .9) 100%);
}

.feature-card:hover img {
  opacity: .86;
  transform: scale(1.025);
}

.feature-card__copy {
  position: absolute;
  z-index: 1;
  right: 0;
  bottom: 0;
  left: 0;
  padding: clamp(24px, 4vw, 46px);
}

.feature-card__copy span {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
}

.feature-card__copy h3 {
  max-width: 760px;
  margin: 12px 0 0;
  font-size: clamp(24px, 3vw, 44px);
  letter-spacing: -.04em;
  line-height: 1.2;
  word-break: keep-all; text-wrap: balance;}

.loading-copy {
  grid-column: 1 / -1;
  min-height: 240px;
  margin: 0;
  padding: 40px;
  color: var(--muted);
  border: 1px solid var(--line);
}

.sound-intro {
  display: grid;
  padding: clamp(72px, 8vw, 128px) var(--gutter);
  grid-template-columns: 1.15fr .75fr auto;
  align-items: end;
  gap: 6vw;
  background:
    linear-gradient(110deg, rgba(74, 168, 255, .08), transparent 42%),
    var(--surface-soft);
  border-bottom: 1px solid var(--line);
}

.sound-intro > p {
  margin: 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
  word-break: keep-all;
}

.sound-intro button {
  min-height: 50px;
  padding: 0 18px;
  color: var(--accent);
  border: 1px solid rgba(169, 239, 45, .55);
  background: transparent;
  cursor: pointer;
  white-space: nowrap;
}

.catalog {
  padding: clamp(80px, 8vw, 128px) var(--gutter);
}

.catalog__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, .6fr);
  gap: 7vw;
  align-items: end;
}

.catalog__search label {
  display: block;
  margin-bottom: 10px;
  color: var(--subtle);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
}

.catalog__search input {
  width: 100%;
  height: 56px;
  padding: 0;
  color: var(--text);
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  outline: 0;
  background: transparent;
  font-size: 17px;
}

.catalog__search input:focus {
  border-color: var(--accent);
}

.catalog__toolbar {
  display: flex;
  margin-top: 60px;
  padding: 16px 0;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-row button {
  min-height: 38px;
  padding: 0 14px;
  color: var(--muted);
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  font-size: 13px;
}

.filter-row button:hover {
  color: var(--text);
  border-color: var(--line);
}

.filter-row button.is-active {
  color: var(--accent-ink);
  border-color: var(--accent);
  background: var(--accent);
}

.filter-row--channels button.is-active {
  color: var(--text);
  border-color: var(--line-strong);
  background: var(--surface-strong);
}

.catalog__result {
  display: flex;
  margin: 22px 0;
  justify-content: space-between;
  gap: 20px;
  color: var(--subtle);
  font-size: 12px;
}

.catalog__result p {
  margin: 0;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 32px 16px;
}

.video-card {
  min-width: 0;
}

.video-card__image {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--surface-strong);
}

.video-card[data-format="short"] .video-card__image {
  margin-right: 32%;
  aspect-ratio: 9 / 12;
}

.video-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}

.video-card:hover img {
  transform: scale(1.035);
}

.video-card__image::after {
  position: absolute;
  right: 12px;
  bottom: 12px;
  display: grid;
  width: 38px;
  height: 38px;
  color: #111;
  border-radius: 50%;
  content: "▶";
  place-items: center;
  background: var(--accent);
  font-size: 12px;
}

.video-card__meta {
  display: flex;
  margin: 14px 0 8px;
  justify-content: space-between;
  gap: 12px;
  color: var(--subtle);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .08em;
}

.video-card__meta span:first-child {
  color: var(--accent);
}

.video-card h3 {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  font-size: 16px;
  letter-spacing: -.02em;
  line-height: 1.48;
  word-break: keep-all;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2; text-wrap: balance;}

.video-card__detail {
  display: flex;
  margin: 10px 0 0;
  gap: 10px;
  color: var(--subtle);
  font-size: 11px;
}

.load-more {
  display: block;
  min-width: 220px;
  min-height: 52px;
  margin: 58px auto 0;
  color: var(--text);
  border: 1px solid var(--line-strong);
  background: transparent;
  cursor: pointer;
}

.load-more:hover {
  color: var(--accent-ink);
  border-color: var(--accent);
  background: var(--accent);
}

.catalog__empty {
  padding: 80px 0;
  text-align: center;
  color: var(--muted);
}

.lab-footer {
  display: flex;
  padding: 48px var(--gutter) 64px;
  justify-content: space-between;
  gap: 40px;
  border-top: 1px solid var(--line);
}

.lab-footer p {
  max-width: 620px;
  margin: 18px 0 0;
  color: var(--subtle);
  font-size: 12px;
  line-height: 1.7;
}

@media (max-width: 1100px) {
  .lab-hero {
    grid-template-columns: 1fr;
  }

  .lab-stats {
    max-width: 720px;
  }

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

  .section-heading {
    position: static;
  }

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

  .sound-intro button {
    grid-column: 2;
  }

  .catalog__toolbar {
    flex-direction: column;
  }

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

@media (max-width: 760px) {
  /* under journal-global, lock keeps 43px; only solo lab-header grows */
  body:not(:has(.journal-global-masthead)) .lab-header {
    min-height: 64px;
  }
  .journal-global-masthead + .lab-header {
    min-height: 43px;
  }

  .lab-header nav a:not(:last-child) {
    display: none;
  }

  .lab-hero {
    min-height: auto;
    padding-top: 72px;
    gap: 56px;
  }

  .lab-hero h1 {
    font-size: clamp(40px, 11vw, 52px); line-height: 1.18; letter-spacing: -.015em;}

  .lab-stats div {
    min-height: 120px;
    padding: 18px;
  }

  .lab-feature {
    padding-block: 72px;
  }

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

  .feature-card,
  .feature-card:first-child {
    grid-column: auto;
    min-height: 390px;
  }

  .sound-intro,
  .catalog__head {
    grid-template-columns: 1fr;
  }

  .sound-intro button {
    grid-column: auto;
    justify-self: start;
  }

  .catalog__search {
    margin-top: 22px;
  }

  .filter-row {
    flex-wrap: nowrap;
    margin-inline: calc(var(--gutter) * -1);
    padding-inline: var(--gutter);
    overflow-x: auto;
    scrollbar-width: none;
  }

  .filter-row button {
    white-space: nowrap;
  }

  .catalog__result p:last-child {
    display: none;
  }

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

  .video-card h3 {
    font-size: 14px; word-break: keep-all; text-wrap: balance;}

  .video-card[data-format="short"] .video-card__image {
    margin-right: 0;
    aspect-ratio: 9 / 13;
  }

  .lab-footer {
    flex-direction: column;
  }

  .lab-footer nav {
    flex-direction: column;
  }
}

@media (max-width: 460px) {
  .video-grid {
    grid-template-columns: 1fr;
  }

  .video-card[data-format="short"] .video-card__image {
    margin-right: 35%;
    aspect-ratio: 9 / 12;
  }
}

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

  * {
    transition: none !important;
  }
}