/* LegalAgent AI法務ラボ — owned media pages */
.lab-page {
  position: relative;
  background: linear-gradient(180deg, #EAF0F7 0%, #E3EBF4 58%, #DCE6F1 100%);
  color: var(--on-paper);
}

/* スクロール構造体(ロゴ幾何)— 背景に固定で極薄の青。トップHPの赤い構造体を青へ振った版 */
.lab-structure {
  position: fixed;
  z-index: 0;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  width: min(62vh, 46vw);
  aspect-ratio: 1 / 1;
  pointer-events: none;
}

.lab-structure svg {
  width: 100%;
  height: 100%;
  display: block;
}

.lab-structure .bar {
  fill: #2E54C8;
  fill-opacity: 0.05;
  stroke: rgba(46, 84, 200, 0.16);
  stroke-width: 0.6;
}

.lab-structure .bar.accent {
  fill-opacity: 0.11;
  stroke-opacity: 0.32;
}

/* 本文は構造体より前面に置く */
.lab-hero,
.lab-media-intro,
.lab-content,
.lab-cta {
  position: relative;
  z-index: 1;
}

/* セクションの区切り: 白の全幅パネルを霧青の地と交互に出して境界を明確化 */
.lab-section--panel {
  position: relative;
}

.lab-section--panel::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -50vw;
  width: 100vw;
  background: var(--paper);
}

.lab-nav {
  gap: clamp(12px, 1.6vw, 24px);
  justify-content: flex-start;
}

.lab-nav .nav__brand {
  flex: 0 0 auto;
}

.lab-nav .nav__items {
  flex: 1 1 auto;
  justify-content: center;
  min-width: 0;
  gap: clamp(14px, 1.4vw, 26px);
}

.lab-nav .nav__item {
  font-size: 14px;
  letter-spacing: 0.04em;
}

.lab-mega-nav {
  position: relative;
  flex: 0 0 auto;
}

.lab-mega-nav__toggle {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  gap: 12px;
  padding: 8px 13px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  background: var(--paper);
  color: var(--nav-text);
  cursor: pointer;
  list-style: none;
  transition: background 0.25s ease, border-color 0.25s ease;
}

.lab-mega-nav__toggle::-webkit-details-marker {
  display: none;
}

.lab-mega-nav__toggle span {
  display: grid;
  gap: 2px;
}

.lab-mega-nav__toggle strong {
  font-size: 14px;
  line-height: 1.2;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.lab-mega-nav__toggle small {
  color: var(--on-paper-faint);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lab-mega-nav__toggle svg {
  transition: transform 0.25s ease;
}

.lab-mega-nav[open] .lab-mega-nav__toggle,
.lab-mega-nav__toggle:hover {
  border-color: var(--paper-line-strong);
  background: var(--paper-2);
}

.lab-mega-nav[open] .lab-mega-nav__toggle svg {
  transform: rotate(180deg);
}

.lab-mega-nav__backdrop {
  display: none;
}

.lab-mega-nav[open] .lab-mega-nav__backdrop {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 110;
  display: block;
  width: 100vw;
  height: 100vh;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: default;
}

.lab-mega-nav__panel {
  position: fixed;
  top: 88px;
  left: 50%;
  z-index: 120;
  display: grid;
  width: min(1180px, calc(100vw - 32px));
  max-height: calc(100vh - 112px);
  grid-template-columns: minmax(260px, 0.95fr) repeat(3, minmax(190px, 0.72fr));
  gap: 18px;
  overflow: auto;
  padding: 18px;
  border: 1px solid var(--paper-line-strong);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 28px 80px -42px rgba(17, 19, 18, 0.42);
  transform: translateX(-50%);
}

.lab-mega-nav__intro,
.lab-mega-nav__column {
  min-width: 0;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  background: var(--paper);
}

.lab-mega-nav__intro {
  display: grid;
  align-content: start;
  gap: 14px;
  padding: 20px;
  background: var(--paper-2);
}

.lab-mega-nav__eyebrow,
.lab-mega-nav__heading,
.lab-menu-compact__label,
.lab-menu-compact__subhead {
  color: var(--chrome);
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.lab-mega-nav__intro strong {
  font-family: var(--serif-jp);
  font-size: 24px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: 0;
}

.lab-mega-nav__intro p {
  margin: 0;
  color: var(--on-paper-mute);
  font-size: 14px;
  line-height: 1.75;
}

.lab-mega-nav__quick {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 4px;
}

.lab-mega-nav__quick a {
  display: grid;
  gap: 4px;
  min-height: 58px;
  align-content: center;
  padding: 10px 12px;
  border: 1px solid rgba(17, 19, 18, 0.1);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.72);
  color: inherit;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.lab-mega-nav__quick a:hover {
  border-color: rgba(174, 133, 62, 0.45);
  background: var(--paper);
}

.lab-mega-nav__quick span {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.25;
}

.lab-mega-nav__quick small {
  color: var(--on-paper-faint);
  font-size: 14px;
  line-height: 1.35;
}

.lab-mega-nav__column {
  display: grid;
  align-content: start;
  gap: 12px;
  padding: 16px;
}

.lab-mega-nav__links,
.lab-mega-nav__guides {
  display: grid;
  gap: 2px;
}

.lab-mega-nav__link,
.lab-mega-nav__guide {
  min-width: 0;
  border-radius: var(--radius-md);
  color: var(--on-paper);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}

.lab-mega-nav__link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  min-height: 38px;
  padding: 8px 10px;
}

.lab-mega-nav__link span,
.lab-mega-nav__guide {
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 14px;
  line-height: 1.45;
}

.lab-mega-nav__link span {
  white-space: nowrap;
}

.lab-mega-nav__link em {
  color: var(--on-paper-faint);
  font-family: var(--mono);
  font-size: 14px;
  font-style: normal;
}

.lab-mega-nav__guide {
  display: block;
  padding: 9px 10px;
}

.lab-mega-nav__link:hover,
.lab-mega-nav__link.is-active,
.lab-mega-nav__guide:hover {
  background: var(--paper-2);
  color: var(--chrome);
}

.lab-menu-compact {
  display: grid;
  gap: 12px;
}

.lab-menu-compact__quick,
.lab-menu-compact__links {
  display: grid;
  gap: 2px;
}

.lab-menu-compact__quick {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.lab-menu-compact__quick a,
.lab-menu-compact__links a {
  color: var(--nav-text);
  text-decoration: none;
  border-radius: var(--radius-sm);
  background: var(--paper-2);
}

.lab-menu-compact__quick a {
  min-height: 36px;
  padding: 9px 10px;
  font-size: 14px;
  font-weight: 600;
}

.lab-menu-compact__links a {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  min-height: 34px;
  padding: 8px 10px;
  font-size: 14px;
  line-height: 1.35;
}

.lab-menu-compact__links span {
  color: var(--on-paper-faint);
  font-family: var(--mono);
  font-size: 14px;
}

.lab-hero {
  padding: clamp(96px, 11vw, 160px) var(--gutter) clamp(56px, 7vw, 96px);
  border-bottom: 1px solid var(--paper-line);
}

.lab-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(420px, 0.9fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  padding-top: 56px;
}

.lab-hero .crumbs {
  grid-column: 1 / -1;
  margin-bottom: 0;
}

.lab-hero__copy h1 {
  margin: 16px 0 0;
  font-family: var(--serif-jp);
  font-size: clamp(42px, 5.6vw, 76px);
  line-height: 1.12;
  letter-spacing: 0;
  font-weight: 500;
  overflow-wrap: normal;
  word-break: keep-all;
}

.lab-hero__copy p {
  max-width: 760px;
  margin: 28px 0 0;
  color: var(--on-paper-mute);
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 2;
  white-space: normal;
}

.lab-hero__visual {
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--paper-line);
  border-radius: 8px;
  background: var(--paper-2);
}

.lab-hero__visual img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

/* トップ(index)のヒーローMV: 生成AI x 法務 マストヘッド(霧青帯・入場アニメ) */
.lab-hero--mv {
  background: linear-gradient(166deg, #D6E1EF 0%, #E1E8F2 45%, #E7EDF5 100%);
}

.lab-hero__mv {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(30px, 3.2vw, 44px);
  text-align: center;
}

.lab-hero__mv-eyebrow {
  font-family: var(--mono);
  font-size: 16px;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--accent-deep);
  opacity: 0;
  animation: lab-mv-fade 0.9s ease 0.3s both;
}

.lab-hero__mv-lock {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(18px, 2.6vw, 40px);
}

.lab-hero__mv-ai,
.lab-hero__mv-law {
  font-family: var(--serif-jp);
  font-weight: 500;
  font-size: clamp(44px, 5.6vw, 92px);
  line-height: 1;
  color: var(--on-paper);
  white-space: nowrap;
}

.lab-hero__mv-ai {
  opacity: 0;
  animation: lab-mv-r 1.1s cubic-bezier(0.16, 1, 0.3, 1) 0.7s both;
}

.lab-hero__mv-law {
  opacity: 0;
  animation: lab-mv-l 1.1s cubic-bezier(0.16, 1, 0.3, 1) 0.85s both;
}

.lab-hero__mv-x {
  width: clamp(40px, 4.8vw, 76px);
  height: clamp(40px, 4.8vw, 76px);
  opacity: 0;
  transform: scale(0.4) rotate(-20deg);
  filter: drop-shadow(0 2px 10px rgba(178, 39, 67, 0.4));
  animation: lab-mv-x 1s cubic-bezier(0.16, 1, 0.3, 1) 1.25s both;
}

.lab-hero__mv-x svg {
  width: 100%;
  height: 100%;
  display: block;
}

.lab-hero__mv-rule {
  width: 0;
  height: 1px;
  background: var(--paper-line-strong);
  animation: lab-mv-rule 1.2s cubic-bezier(0.16, 1, 0.3, 1) 1.5s both;
}

@keyframes lab-mv-fade { to { opacity: 1; } }
@keyframes lab-mv-r { from { opacity: 0; transform: translateX(-22px); } to { opacity: 1; transform: translateX(0); } }
@keyframes lab-mv-l { from { opacity: 0; transform: translateX(22px); } to { opacity: 1; transform: translateX(0); } }
@keyframes lab-mv-x { from { opacity: 0; transform: scale(0.4) rotate(-20deg); } to { opacity: 1; transform: scale(1) rotate(0); } }
@keyframes lab-mv-rule { to { width: min(520px, 86%); } }
@keyframes lab-scroll-cue {
  0%, 100% { transform: scaleX(0.55); opacity: 0.45; }
  50% { transform: scaleX(1); opacity: 1; }
}
@keyframes lab-section-rise {
  from { opacity: 0.001; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes lab-card-rise {
  from { opacity: 0.001; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .lab-hero__mv-eyebrow,
  .lab-hero__mv-ai,
  .lab-hero__mv-law,
  .lab-hero__mv-x { opacity: 1; transform: none; animation: none; }
  .lab-hero__mv-rule { width: min(520px, 86%); animation: none; }
  .lab-feature-scroll-hint span::before { animation: none; }
}

.lab-tabs-wrap {
  position: sticky;
  top: 72px;
  z-index: 20;
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid var(--paper-line);
  backdrop-filter: blur(16px);
}

.lab-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 14px 0;
  scrollbar-width: none;
}

.lab-tabs::-webkit-scrollbar {
  display: none;
}

.lab-tabs__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-sm);
  color: var(--on-paper-mute);
  background: var(--paper);
  text-decoration: none;
  white-space: nowrap;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.lab-tabs__item span {
  color: var(--on-paper-faint);
  letter-spacing: 0.04em;
}

.lab-tabs__item:hover,
.lab-tabs__item.is-active {
  color: var(--on-paper);
  border-color: var(--chrome);
  background: var(--paper-2);
}

.lab-media-intro {
  border-bottom: 1px solid var(--paper-line);
}

.lab-media-intro__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.34fr);
  gap: clamp(28px, 5vw, 64px);
  align-items: end;
  padding-top: clamp(44px, 6vw, 72px);
  padding-bottom: clamp(44px, 6vw, 72px);
}

.lab-media-intro__copy h2 {
  margin: 12px 0 0;
  font-family: var(--serif-jp);
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.3;
  font-weight: 500;
  letter-spacing: 0;
}

.lab-media-intro__copy p {
  max-width: 860px;
  margin: 22px 0 0;
  color: var(--on-paper-mute);
  font-size: 16px;
  line-height: 1.95;
}

.lab-media-intro__actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-self: end;
  width: min(100%, 300px);
}

.lab-media-intro__actions .btn {
  width: 100%;
  justify-content: center;
}

.lab-media-intro__map {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(220px, 0.28fr) minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
  margin-top: clamp(8px, 2vw, 18px);
  padding-top: clamp(26px, 4vw, 40px);
  border-top: 1px solid var(--paper-line);
}

.lab-media-intro__map-head h3 {
  margin: 0;
  font-family: var(--serif-jp);
  font-size: clamp(22px, 2.4vw, 32px);
  line-height: 1.35;
  font-weight: 500;
  letter-spacing: 0;
}

.lab-media-intro__map-head p {
  margin: 14px 0 0;
  color: var(--on-paper-mute);
  font-size: 15px;
  line-height: 1.8;
}

.lab-media-intro__map-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.lab-media-intro__list {
  display: grid;
  border-top: 1px solid var(--paper-line);
}

.lab-media-intro__list h3 {
  margin: 0;
  padding: 0 0 18px;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--chrome);
  text-transform: uppercase;
}

.lab-media-intro__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  min-height: 100%;
  padding: 16px;
  border: 1px solid var(--paper-line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.42);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.25s ease, background 0.25s ease, color 0.25s ease, transform 0.25s ease;
}

.lab-media-intro__item:hover {
  border-color: var(--chrome);
  background: var(--paper-2);
  color: var(--chrome);
  transform: translateY(-1px);
}

.lab-media-intro__index,
.lab-media-intro__arrow {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--chrome);
}

.lab-media-intro__item-copy {
  display: grid;
  gap: 8px;
}

.lab-media-intro__item-copy strong {
  color: var(--on-paper);
  font-size: 15px;
  line-height: 1.55;
  font-weight: 600;
}

.lab-media-intro__item:hover .lab-media-intro__item-copy strong {
  color: var(--chrome);
}

.lab-media-intro__item-copy span {
  color: var(--on-paper);
  font-size: 14px;
  line-height: 1.65;
}

.lab-media-intro__arrow {
  align-self: center;
}

.lab-content {
  padding: clamp(56px, 7vw, 96px) var(--gutter);
}

@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .lab-media-intro,
    .lab-feature-section,
    .lab-section,
    .lab-cta {
      animation: lab-section-rise both;
      animation-timeline: view();
      animation-range: entry 0% cover 24%;
    }

    .lab-feature-card {
      animation: lab-card-rise 0.7s cubic-bezier(0.16, 1, 0.3, 1) both;
      animation-delay: calc(var(--feature-index, 0) * 70ms);
    }
  }
}

.lab-feature-section,
.lab-section {
  padding: clamp(44px, 6vw, 80px) 0;
  border-bottom: 1px solid var(--paper-line);
}

.lab-section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(260px, 0.46fr);
  gap: clamp(24px, 5vw, 64px);
  align-items: end;
  margin-bottom: 36px;
}

.lab-section-head h2 {
  grid-column: 1;
  margin: 12px 0 0;
  font-family: var(--serif-jp);
  font-size: clamp(28px, 4vw, 52px);
  line-height: 1.28;
  font-weight: 500;
  letter-spacing: 0;
}

.lab-section-head p {
  grid-column: 2;
  grid-row: 1 / span 2;
  margin: 0;
  color: var(--on-paper-mute);
  font-size: 15px;
  line-height: 1.9;
}

.lab-feature-rail {
  position: relative;
  margin-right: calc(var(--gutter) * -1);
}

.lab-feature-rail::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 26px;
  width: min(120px, 18vw);
  pointer-events: none;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0), var(--paper));
}

.lab-feature-controls {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 0 var(--gutter) 16px 0;
}

.lab-feature-control {
  display: inline-flex;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--paper-line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  color: var(--on-paper);
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.lab-feature-control:hover,
.lab-feature-control:focus-visible {
  border-color: rgba(174, 133, 62, 0.58);
  background: var(--paper);
  box-shadow: 0 14px 28px rgba(16, 24, 40, 0.1);
  transform: translateY(-1px);
}

.lab-feature-control:focus-visible {
  outline: 2px solid rgba(174, 133, 62, 0.38);
  outline-offset: 3px;
}

.lab-feature-track {
  display: flex;
  gap: 18px;
  overflow-x: auto;
  padding: 0 var(--gutter) 26px 0;
  scroll-behavior: smooth;
  scroll-padding-left: 2px;
  scroll-snap-type: x mandatory;
  scrollbar-color: var(--paper-line-strong) transparent;
  scrollbar-width: thin;
}

.lab-feature-card {
  display: flex;
  flex-direction: column;
  flex: 0 0 clamp(340px, 48vw, 640px);
  gap: 28px;
  min-height: 520px;
  padding: clamp(32px, 5vw, 56px);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  background: var(--paper-2);
  color: inherit;
  text-decoration: none;
  scroll-snap-align: start;
  transition: background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.lab-feature-card:hover {
  border-color: rgba(174, 133, 62, 0.45);
  box-shadow: 0 22px 46px rgba(16, 24, 40, 0.08);
  transform: translateY(-4px);
}

.lab-feature-card[data-active] {
  border-color: rgba(174, 133, 62, 0.46);
  background: #fff;
}

.lab-feature-card h3 {
  margin: 0;
  font-family: var(--serif-jp);
  font-size: clamp(24px, 2.6vw, 36px);
  line-height: 1.38;
  font-weight: 500;
  letter-spacing: 0;
}

.lab-feature-card p {
  max-width: 740px;
  margin: 0;
  color: var(--on-paper-mute);
  font-size: 16px;
  line-height: 2;
}

.lab-feature-card__visual,
.lab-card__visual,
.lab-topic__visual,
.lab-topic-section__visual,
.lab-prompt-group__visual {
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--paper-line);
  border-radius: 8px;
  background: var(--paper-2);
}

.lab-feature-card__visual {
  aspect-ratio: 16 / 8;
}

.lab-feature-card__visual img,
.lab-card__visual img,
.lab-topic__visual img,
.lab-topic-section__visual img,
.lab-prompt-group__visual img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.lab-feature-card:hover .lab-feature-card__visual img,
.lab-card:hover .lab-card__visual img,
.lab-topic:hover .lab-topic__visual img,
.lab-topic-section__card:hover .lab-topic-section__visual img,
.lab-prompt-group:hover .lab-prompt-group__visual img {
  transform: scale(1.035);
}

.lab-feature-card > span:not(.lab-feature-card__visual) {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  color: var(--chrome);
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.08em;
}

.lab-feature-card svg,
.lab-card__action svg {
  transition: transform 0.3s ease;
}

.lab-feature-card:hover svg,
.lab-card:hover .lab-card__action svg {
  transform: translateX(4px);
}

.lab-feature-scroll-hint {
  display: flex;
  justify-content: flex-end;
  padding-right: var(--gutter);
  color: var(--on-paper-faint);
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.18em;
}

.lab-feature-scroll-hint span {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.lab-feature-scroll-hint span::before {
  content: "";
  display: block;
  width: 54px;
  height: 1px;
  background: currentColor;
  transform-origin: right center;
  animation: lab-scroll-cue 1.8s ease-in-out infinite;
}

.lab-side-list {
  display: grid;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper);
}

.lab-side-item {
  display: grid;
  gap: 10px;
  padding: 24px;
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--paper-line);
  transition: background 0.25s ease;
}

.lab-side-item:last-child {
  border-bottom: 0;
}

.lab-side-item:hover {
  background: var(--paper-2);
}

.lab-side-item__meta,
.lab-card__meta,
.lab-card__action,
.lab-news-item span,
.lab-topic__count {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--on-paper-mute);
}

.lab-side-item strong {
  font-size: 15px;
  line-height: 1.65;
  font-weight: 500;
}

.lab-topic-grid,
.lab-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.lab-topic,
.lab-card {
  min-height: 100%;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  color: inherit;
  text-decoration: none;
  background: var(--paper);
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.lab-topic:hover,
.lab-card:hover {
  background: var(--paper-2);
  border-color: rgba(174, 133, 62, 0.45);
  transform: translateY(-2px);
}

.lab-topic {
  display: grid;
  gap: 14px;
  padding: 30px 28px;
}

.lab-topic__visual {
  margin-bottom: 2px;
}

.lab-topic__icon {
  width: 42px;
  height: 42px;
  color: var(--chrome);
}

.lab-topic__icon svg {
  width: 100%;
  height: 100%;
}

.lab-topic h3,
.lab-card h3 {
  margin: 0;
  font-family: var(--serif-jp);
  font-size: 21px;
  line-height: 1.5;
  font-weight: 500;
  letter-spacing: 0;
}

.lab-topic p,
.lab-card p {
  margin: 0;
  color: var(--on-paper-mute);
  font-size: 15px;
  line-height: 1.85;
}

.lab-guide-list {
  display: grid;
  border-top: 1px solid var(--paper-line);
}

.lab-guide-row {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  gap: 24px;
  align-items: start;
  padding: 28px 0;
  border-bottom: 1px solid var(--paper-line);
  color: inherit;
  text-decoration: none;
  transition: background 0.25s ease;
}

.lab-guide-row:hover {
  background: var(--paper-2);
}

.lab-guide-row__index {
  font-family: var(--mono);
  font-size: 18px;
  letter-spacing: 0.1em;
  color: var(--chrome);
  text-transform: uppercase;
}

.lab-guide-row__body {
  display: grid;
  gap: 10px;
}

.lab-guide-row__label,
.lab-guide-row__sections,
.lab-guide-row__action {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--on-paper-mute);
}

.lab-guide-row__label {
  color: var(--chrome);
  text-transform: uppercase;
}

.lab-guide-row__title {
  margin: 0;
  font-family: var(--serif-jp);
  font-size: 22px;
  line-height: 1.48;
  font-weight: 500;
  letter-spacing: 0;
}

.lab-guide-row__desc {
  color: var(--on-paper-mute);
  font-size: 15px;
  line-height: 1.85;
}

.lab-guide-row__sections {
  line-height: 1.7;
}

.lab-guide-row__action {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  color: var(--chrome);
  white-space: nowrap;
}

.lab-guide-outline {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--paper-line);
  border-left: 1px solid var(--paper-line);
}

.lab-guide-outline article {
  display: grid;
  gap: 12px;
  padding: 30px 28px;
  border-right: 1px solid var(--paper-line);
  border-bottom: 1px solid var(--paper-line);
  background: var(--paper);
}

.lab-guide-outline article:hover {
  background: var(--paper-2);
}

.lab-guide-outline span {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--chrome);
}

.lab-guide-outline h3 {
  margin: 0;
  font-family: var(--serif-jp);
  font-size: 21px;
  line-height: 1.45;
  font-weight: 500;
  letter-spacing: 0;
}

.lab-guide-outline p {
  margin: 0;
  color: var(--on-paper-mute);
  font-size: 15px;
  line-height: 1.85;
}

.lab-topic-sections {
  display: grid;
  gap: clamp(34px, 6vw, 72px);
}

.lab-topic-section {
  scroll-margin-top: 110px;
}

.lab-topic-section + .lab-topic-section {
  padding-top: clamp(34px, 5vw, 64px);
  border-top: 1px solid var(--paper-line);
}

.lab-topic-section__body {
  display: grid;
  grid-template-columns: minmax(240px, 0.34fr) minmax(0, 1fr);
  gap: clamp(20px, 4vw, 36px);
  align-items: start;
}

.lab-topic-section__summary,
.lab-topic-section__list {
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  background: var(--paper);
}

.lab-topic-section__summary {
  display: grid;
  gap: 16px;
  padding: 20px;
  background: var(--paper-2);
}

.lab-topic-section__visual {
  aspect-ratio: 16 / 10;
}

.lab-topic-section__count {
  color: var(--chrome);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.5;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lab-topic-section__actions {
  display: grid;
  gap: 8px;
}

.lab-topic-section__actions a {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 10px 12px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--on-paper);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.45;
  text-align: center;
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.lab-topic-section__actions a:hover {
  border-color: rgba(174, 133, 62, 0.5);
  background: rgba(174, 133, 62, 0.08);
  color: var(--chrome);
}

.lab-topic-section__lists {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.lab-topic-section__list {
  overflow: hidden;
}

.lab-topic-section__list h3 {
  margin: 0;
  padding: 16px 18px;
  border-bottom: 1px solid var(--paper-line);
  color: var(--chrome);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.45;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lab-topic-section__items {
  display: grid;
}

.lab-topic-section__item {
  display: grid;
  gap: 8px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--paper-line);
  color: inherit;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}

.lab-topic-section__item:last-child {
  border-bottom: 0;
}

.lab-topic-section__item:hover {
  background: var(--paper-2);
  color: var(--chrome);
}

.lab-topic-section__item-meta {
  color: var(--on-paper-mute);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.45;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.lab-topic-section__item strong {
  font-size: 15px;
  line-height: 1.65;
  font-weight: 600;
}

.lab-topic-section__empty {
  margin: 0;
  padding: 18px;
  color: var(--on-paper-mute);
  font-size: 14px;
  line-height: 1.75;
}

.lab-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 30px 28px;
}

.lab-card--compact {
  padding: 26px 24px;
}

.lab-card--compact .lab-card__visual {
  aspect-ratio: 16 / 8;
}

.lab-card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  text-transform: uppercase;
}

.lab-card__cat {
  color: var(--chrome);
}

.lab-card__cat[data-cat="Prompt"] {
  color: var(--accent-deep, #A8364A);
}

.lab-card__topics,
.lab-feature-card__topics,
.lab-side-item__topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.lab-card__topics {
  margin-top: -4px;
}

.lab-feature-card__topics {
  margin-top: -12px;
}

.lab-side-item__topics {
  gap: 6px;
}

.lab-card__topics span,
.lab-feature-card__topics span,
.lab-side-item__topics span {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 5px 9px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-xs);
  color: var(--on-paper-mute);
  background: rgba(255, 255, 255, 0.32);
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.06em;
}

.lab-side-item__topics span {
  min-height: 24px;
  padding: 4px 7px;
  letter-spacing: 0.04em;
}

.lab-card__action {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
  color: var(--chrome);
}

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

.lab-prompt-group {
  display: grid;
  gap: 22px;
  align-content: start;
  padding: 26px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-lg);
  background: var(--paper);
}

.lab-prompt-group__head {
  display: grid;
  gap: 12px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--paper-line);
}

.lab-prompt-group__visual {
  aspect-ratio: 16 / 7;
}

.lab-prompt-group__count {
  display: inline-flex;
  width: fit-content;
  align-items: center;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  line-height: 1;
  padding: 6px 8px;
  border: 1px solid rgba(174, 133, 62, 0.28);
  border-radius: var(--radius-xs);
  background: rgba(174, 133, 62, 0.07);
  color: var(--chrome);
  text-transform: uppercase;
}

.lab-prompt-group h3 {
  margin: 0;
  font-family: var(--serif-jp);
  font-size: 24px;
  line-height: 1.4;
  font-weight: 600;
  letter-spacing: 0;
}

.lab-prompt-group p {
  margin: 0;
  color: var(--on-paper-mute);
  font-size: 15px;
  line-height: 1.85;
}

.lab-prompt-group__links {
  display: grid;
  gap: 0;
}

.lab-prompt-link {
  position: relative;
  display: grid;
  gap: 9px;
  padding: 16px 0 16px 18px;
  border-top: 1px solid rgba(25, 25, 25, 0.12);
  color: inherit;
  text-decoration: none;
  transition: background 0.2s ease;
}

.lab-prompt-link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 3px;
  background: rgba(174, 133, 62, 0.35);
  transition: background 0.2s ease;
}

.lab-prompt-link:hover {
  background: rgba(174, 133, 62, 0.05);
}

.lab-prompt-link:hover::before {
  background: var(--chrome);
}

.lab-prompt-link:hover .lab-prompt-link__title {
  color: var(--chrome);
}

.lab-prompt-link__label {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  align-items: center;
  padding: 4px 8px;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius-xs);
  background: rgba(255, 255, 255, 0.54);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.45;
  letter-spacing: 0.03em;
  color: var(--on-paper-mute);
}

.lab-prompt-link__title {
  color: var(--on-paper);
  font-size: 16px;
  line-height: 1.65;
  font-weight: 600;
  transition: color 0.2s ease;
}

.lab-grid--compact .lab-card p {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.lab-news-list {
  display: grid;
  border-top: 1px solid var(--paper-line);
}

.lab-news-item {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 28px;
  padding: 22px 0;
  border-bottom: 1px solid var(--paper-line);
  color: inherit;
  text-decoration: none;
}

.lab-news-item strong {
  font-size: 16px;
  line-height: 1.7;
  font-weight: 500;
}

.lab-empty {
  padding: 32px;
  margin: 0;
  color: var(--on-paper-mute);
  font-size: 15px;
  line-height: 1.8;
}

.lab-cta {
  padding: clamp(64px, 8vw, 112px) var(--gutter);
}

.lab-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 32px;
  align-items: end;
}

.lab-cta h2 {
  margin: 14px 0 0;
  font-family: var(--serif-jp);
  font-size: clamp(30px, 4.8vw, 58px);
  line-height: 1.25;
  font-weight: 500;
}

.lab-cta p {
  max-width: 760px;
  margin: 22px 0 0;
  color: var(--on-paper-mute);
  font-size: 16px;
  line-height: 1.9;
}

@media (max-width: 1420px) {
  .lab-nav .nav__items {
    display: none;
  }

  .lab-nav .nav__menu {
    display: block;
    margin-left: 0;
  }

  .lab-nav > .lp-nav__lang {
    margin-left: auto;
  }
}

@media (max-width: 980px) {
  .lab-mega-nav__panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .lab-hero__inner,
  .lab-media-intro__inner,
  .lab-section-head,
  .lab-topic-section__body,
  .lab-cta__inner {
    grid-template-columns: 1fr;
  }

  .lab-section-head p {
    grid-column: auto;
    grid-row: auto;
  }

  .lab-media-intro__actions {
    justify-self: start;
    width: min(100%, 360px);
  }

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

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

  .lab-side-list {
    border: 1px solid var(--paper-line);
  }

  .lab-feature-card {
    flex-basis: min(76vw, 560px);
    min-height: 500px;
  }

  .lab-topic-grid,
  .lab-topic-section__lists,
  .lab-prompt-groups,
  .lab-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .lab-mega-nav {
    display: none;
  }

  .lab-hero {
    padding-top: 76px;
  }

  .lab-hero__inner {
    padding-top: 40px;
  }

  .lab-hero__copy p {
    white-space: normal;
  }

  .lab-hero__visual,
  .lab-feature-card__visual,
  .lab-prompt-group__visual {
    aspect-ratio: 16 / 9;
  }

  .lab-feature-rail {
    margin-right: calc(var(--gutter) * -1);
  }

  .lab-feature-controls {
    justify-content: flex-start;
    padding-right: var(--gutter);
  }

  .lab-feature-track {
    gap: 14px;
  }

  .lab-feature-card {
    flex-basis: min(86vw, 420px);
    min-height: 460px;
    padding: 24px;
  }

  .lab-feature-scroll-hint {
    justify-content: flex-start;
  }

  .lab-media-intro__actions .btn,
  .lab-cta .btn {
    width: 100%;
    justify-content: center;
  }

  .lab-tabs-wrap {
    position: static;
  }

  .lab-topic-grid,
  .lab-media-intro__map-grid,
  .lab-topic-section__lists,
  .lab-guide-outline,
  .lab-prompt-groups,
  .lab-grid {
    grid-template-columns: 1fr;
  }

  .lab-guide-row {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 24px 0;
  }

  .lab-guide-row__action {
    justify-self: start;
  }

  .lab-news-item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}