/* LIG project page */
:root {
  --lig-bg: #f8fafb;
  --lig-surface: #ffffff;
  --lig-ink: #0f1a1c;
  --lig-sub: #4a5f63;
  --lig-muted: #7a9196;
  --lig-line: #e2e8f0;
  --lig-teal: #0d9488;
  --lig-teal-bright: #14b8a6;
  --lig-teal-soft: #ecfdf5;
  --lig-coral: #ea580c;
  --lig-coral-soft: #ffedd5;
  --lig-slate: #1e3a40;
  --lig-navy: #1e3a5f;
  --lig-navy-hover: #2a5080;
  --lig-navy-soft: #f0f4f9;
  --lig-radius: 12px;
  --lig-shadow: 0 8px 32px rgba(15, 26, 28, 0.06);
}

html {
  scroll-behavior: smooth;
}

body.lig-site {
  font-family: "Inter", "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--lig-ink);
  line-height: 1.65;
  font-size: 16px;
  margin: 0;
  background: var(--lig-bg);
  -webkit-font-smoothing: antialiased;
}

/* ===== Particles backdrop (hero; demo extends through description) ===== */
.lig-particles-zone {
  position: relative;
  overflow: hidden;
  background: linear-gradient(
    165deg,
    #ecfdf5 0%,
    #f0fdfa 22%,
    #f8fafb 58%,
    var(--lig-bg) 100%
  );
}

.lig-particles-zone .lig-hero-banner {
  background: transparent;
}

.lig-particles-zone .lig-section {
  position: relative;
  z-index: 1;
  background: transparent;
}

.lig-particles-zone .lig-section--soft {
  background: rgba(255, 255, 255, 0.42);
  border-color: rgba(226, 232, 240, 0.65);
}

.lig-particles-zone .lig-demo-section {
  background: transparent;
  border-top-color: rgba(226, 232, 240, 0.65);
}

.lig-particles-zone .lig-demo-section > .lig-section-inner {
  padding-bottom: 1.5rem;
}

.lig-particles-zone--demo {
  margin-bottom: 0;
}

.lig-particles-zone--demo::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 32%;
  pointer-events: none;
  z-index: 0;
  background: linear-gradient(to bottom, transparent 0%, var(--lig-bg) 90%);
}

.lig-particles-zone--demo .lig-hero-banner.lig-hero-banner--demo {
  background: transparent;
  border-bottom: none;
}

.lig-particles-zone--demo .lig-hero-particles {
  /* Fade through description — full strength in hero, gone before viz */
  -webkit-mask-image: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 1) 0%,
    rgba(0, 0, 0, 1) 28%,
    rgba(0, 0, 0, 0.85) 40%,
    rgba(0, 0, 0, 0.55) 52%,
    rgba(0, 0, 0, 0.22) 62%,
    rgba(0, 0, 0, 0) 72%
  );
  mask-image: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 1) 0%,
    rgba(0, 0, 0, 1) 28%,
    rgba(0, 0, 0, 0.85) 40%,
    rgba(0, 0, 0, 0.55) 52%,
    rgba(0, 0, 0, 0.22) 62%,
    rgba(0, 0, 0, 0) 72%
  );
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
}

.lig-particles-zone--demo .z2z-page-header {
  position: relative;
  z-index: 1;
  margin: 0 auto 0;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

body.lig-site:not(.lig-demo-embed) .lig-particles-zone--demo .z2z-page-header {
  margin-top: 0;
}

body.lig-site:not(.lig-demo-embed) .z2z-viz-section {
  background: var(--lig-bg);
  margin-top: 0;
  padding-top: 1.5rem;
  padding-bottom: 2rem;
  position: relative;
  z-index: 1;
}

/* ===== Hero ===== */
.lig-hero-banner {
  position: relative;
  overflow: hidden;
  padding: 3rem 1.25rem 3rem;
  background: linear-gradient(
    165deg,
    #ecfdf5 0%,
    #f0fdfa 28%,
    #f8fafb 62%,
    var(--lig-bg) 100%
  );
}

.lig-hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  min-height: 0;
  z-index: 0;
  pointer-events: none;
  /* Fade particles at bottom of zone — text stays fully opaque */
  -webkit-mask-image: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 1) 0%,
    rgba(0, 0, 0, 0.98) 38%,
    rgba(0, 0, 0, 0.88) 62%,
    rgba(0, 0, 0, 0.55) 80%,
    rgba(0, 0, 0, 0.18) 93%,
    rgba(0, 0, 0, 0) 100%
  );
  mask-image: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 1) 0%,
    rgba(0, 0, 0, 0.98) 38%,
    rgba(0, 0, 0, 0.88) 62%,
    rgba(0, 0, 0, 0.55) 80%,
    rgba(0, 0, 0, 0.18) 93%,
    rgba(0, 0, 0, 0) 100%
  );
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
}

.lig-hero-particles canvas {
  display: block;
  vertical-align: bottom;
}

.lig-hero-inner {
  position: relative;
  z-index: 1;
  max-width: 52rem;
  margin: 0 auto;
  text-align: center;
}

.lig-hero-inner--wide {
  max-width: 56rem;
}

.lig-hero-logo {
  display: block;
  width: min(420px, 82vw);
  height: auto;
  margin: 0 auto 1.5rem;
}

.pub-title {
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--lig-ink);
  margin: 0 0 0.85rem;
  font-size: clamp(1.45rem, 4vw, 2.35rem);
  line-height: 1.18;
}

.pub-subtitle {
  color: var(--lig-sub);
  font-weight: 500;
  max-width: 42rem;
  margin: 0 auto 1rem;
  font-size: 1.05rem;
  line-height: 1.58;
}

.pub-authors-block {
  margin: 1rem auto 0.5rem;
  max-width: 36rem;
}

.pub-authors-line {
  margin: 0 0 0.5rem;
  color: #1e293b;
  font-size: 0.98rem;
  line-height: 1.6;
}

.pub-author a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid rgba(13, 148, 136, 0.35);
}

.pub-author a:hover {
  color: var(--lig-teal);
  border-bottom-color: var(--lig-teal);
}

.pub-author sup {
  font-size: 0.72em;
  font-weight: 600;
  color: var(--lig-teal);
}

.pub-author-sep {
  margin: 0 0.35rem;
  color: var(--lig-muted);
}

.pub-affil-list {
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--lig-muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.pub-affil-list li {
  margin: 0.15rem 0;
}

.pub-affil-list sup {
  font-size: 0.75em;
  color: var(--lig-teal);
  margin-right: 0.15rem;
}

.pub-links {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  justify-content: center;
}

.pub-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.58rem 1.2rem;
  border-radius: 8px;
  background: var(--lig-navy);
  color: #fff !important;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: background 0.18s ease, transform 0.18s ease, border-color 0.18s ease;
  border: 1px solid transparent;
}

.pub-btn:hover {
  transform: translateY(-1px);
  background: var(--lig-navy-hover);
}

.pub-btn--ghost {
  background: var(--lig-surface);
  color: var(--lig-navy) !important;
  border-color: rgba(30, 58, 95, 0.28);
}

.pub-btn--ghost:hover {
  background: var(--lig-navy-soft);
  border-color: var(--lig-navy);
  color: var(--lig-navy) !important;
}

.pub-btn.is-disabled {
  background: var(--lig-surface);
  color: var(--lig-muted) !important;
  border: 1px dashed var(--lig-line);
  cursor: default;
  pointer-events: none;
}

.pub-soon {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 0.14rem 0.42rem;
  border-radius: 4px;
  background: var(--lig-coral-soft);
  color: var(--lig-coral);
}

/* ===== Sections ===== */
.lig-section[id] {
  scroll-margin-top: 3.75rem;
}

.lig-section {
  padding: 3rem 1.25rem;
}

.lig-section--soft {
  background: rgba(255, 255, 255, 0.72);
  border-top: 1px solid var(--lig-line);
  border-bottom: 1px solid var(--lig-line);
}

.lig-section-inner {
  max-width: 52rem;
  margin: 0 auto;
  min-width: 0;
}

.lig-eyebrow {
  color: var(--lig-teal);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 0 0 0.35rem;
}

.lig-section-title {
  font-weight: 800;
  letter-spacing: -0.02em;
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  margin: 0 0 1.15rem;
  color: var(--lig-ink);
}

.lig-section-title::after {
  content: "";
  display: block;
  height: 2px;
  width: 40px;
  margin: 0.5rem 0 0;
  border-radius: 2px;
  background: var(--lig-teal);
}

.lig-abstract {
  color: #334155;
  font-size: 1.03rem;
  line-height: 1.78;
}

.lig-abstract p {
  margin: 0 0 1rem;
}

.lig-paper-note {
  color: var(--lig-muted);
  font-size: 0.92rem;
  margin: 0.75rem 0 0 !important;
  padding: 0.75rem 1rem;
  border-left: 3px solid var(--lig-teal);
  background: rgba(255, 255, 255, 0.65);
  border-radius: 0 8px 8px 0;
}

.lig-figure-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.lig-figure-block {
  margin-top: 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.lig-figure-block .lig-figure-intro {
  align-self: stretch;
  width: 100%;
}

.lig-figure-intro {
  margin-bottom: 1rem;
  color: #334155;
  font-size: 0.98rem;
  line-height: 1.72;
}

.lig-figure-kicker {
  margin: 0 0 0.65rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--lig-ink);
}

.lig-figure-intro p {
  margin: 0 0 0.85rem;
}

.lig-route-dl {
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.lig-route-dl dt {
  margin: 0;
  font-size: 0.92rem;
  color: var(--lig-ink);
}

.lig-route-dl dd {
  margin: 0.25rem 0 0;
  padding-left: 0.85rem;
  border-left: 2px solid rgba(13, 148, 136, 0.25);
  color: var(--lig-sub);
  font-size: 0.9rem;
  line-height: 1.65;
}

.lig-route-dl-tag {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  background: #ecfdf5;
  color: #0f766e;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  vertical-align: middle;
}

.lig-figure {
  margin: 0;
  padding: 0;
  width: 100%;
  background: var(--lig-surface);
  border: 1px solid var(--lig-line);
  border-radius: var(--lig-radius);
  overflow: hidden;
  box-shadow: var(--lig-shadow);
}

.lig-figure--wide {
  max-width: min(680px, 92vw);
  margin-left: auto;
  margin-right: auto;
}

.lig-figure--tall {
  max-width: min(360px, 52vw);
  margin-left: auto;
  margin-right: auto;
}

.lig-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-height: min(52vh, 420px);
  object-fit: contain;
  margin: 0 auto;
  padding: 0.5rem;
  box-sizing: border-box;
  background: #fff;
}

.lig-figure--tall img {
  max-height: min(62vh, 520px);
  padding: 0.35rem;
}

.lig-route-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
  margin-top: 1.25rem;
}

@media (max-width: 768px) {
  .lig-route-cards {
    grid-template-columns: 1fr;
  }
}

.lig-route-card {
  padding: 1rem 1.05rem;
  border-radius: var(--lig-radius);
  border: 1px solid var(--lig-line);
  background: #fff;
  box-shadow: 0 2px 12px rgba(15, 26, 28, 0.04);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.lig-route-card:hover {
  border-color: rgba(13, 148, 136, 0.35);
  box-shadow: 0 4px 18px rgba(13, 148, 136, 0.08);
}

.lig-route-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.35rem 0.5rem;
  margin-bottom: 0.55rem;
  padding-bottom: 0.55rem;
  border-bottom: 1px solid var(--lig-line);
}

.lig-route-formula {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--lig-ink);
  letter-spacing: 0.02em;
}

.lig-route-tag {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  white-space: nowrap;
}

.lig-route-card--att .lig-route-tag {
  background: #ecfdf5;
  color: #0f766e;
}

.lig-route-card--mlp .lig-route-tag {
  background: #fff7ed;
  color: #c2410c;
}

.lig-route-card--layer .lig-route-tag {
  background: #eff6ff;
  color: #1d4ed8;
}

.lig-route-card--att {
  border-top: 3px solid #14b8a6;
}

.lig-route-card--mlp {
  border-top: 3px solid #fb923c;
}

.lig-route-card--layer {
  border-top: 3px solid #3b82f6;
}

.lig-route-card p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.58;
  color: var(--lig-sub);
}

.lig-highlight-box {
  margin-top: 1.25rem;
  padding: 1rem 1.15rem;
  border-radius: var(--lig-radius);
  background: var(--lig-teal-soft);
  border: 1px solid rgba(13, 148, 136, 0.15);
  font-size: 0.95rem;
  color: #134e4a;
  line-height: 1.65;
}

.lig-highlight-box a {
  color: #0f766e;
  font-weight: 600;
}

.lig-subsection {
  margin-top: 2.25rem;
  padding-top: 2rem;
  border-top: 1px solid var(--lig-line);
}

.lig-abstract a {
  color: var(--lig-teal);
  font-weight: 600;
}

.lig-demo-lead a {
  color: var(--lig-teal);
  font-weight: 600;
  text-decoration: none;
}

.lig-demo-lead a:hover {
  text-decoration: underline;
}

/* Layer / z / ATT / MLP flow diagram — responsive across 768px & 960px breakpoints */
.lig-flow-wrap {
  display: flex;
  justify-content: center;
  max-width: 100%;
  margin-top: 1.25rem;
  overflow: hidden;
}

.lig-flow {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  gap: clamp(0.35rem, 0.25rem + 0.45vw, 0.55rem) clamp(0.3rem, 0.2rem + 0.35vw, 0.5rem);
  margin: 0;
  padding: clamp(0.85rem, 0.75rem + 0.5vw, 1.1rem) clamp(0.75rem, 0.55rem + 0.8vw, 1.15rem);
  width: fit-content;
  max-width: 100%;
  box-sizing: border-box;
  background: #fff;
  border: 1px solid var(--lig-line);
  border-radius: var(--lig-radius);
  box-shadow: 0 2px 12px rgba(15, 26, 28, 0.04);
  transition: gap 0.22s ease, padding 0.22s ease;
}

.lig-flow-node {
  padding: clamp(0.42rem, 0.38rem + 0.2vw, 0.5rem) clamp(0.58rem, 0.5rem + 0.35vw, 0.75rem);
  border-radius: 6px;
  font-weight: 700;
  font-size: clamp(0.78rem, 0.72rem + 0.28vw, 0.85rem);
  line-height: 1.25;
  white-space: nowrap;
  text-align: center;
  flex-shrink: 0;
  transition: font-size 0.22s ease, padding 0.22s ease;
}

.lig-flow-node--layer {
  background: #eff6ff;
  color: #1e3a8a;
  border: 2px solid #3b82f6;
  border-radius: 8px;
  box-shadow: 0 1px 0 rgba(37, 99, 235, 0.08);
}

.lig-flow-node--layer-block {
  display: inline-flex;
  flex-direction: column;
  align-items: stretch;
  gap: clamp(0.35rem, 0.3rem + 0.2vw, 0.45rem);
  padding: clamp(0.48rem, 0.42rem + 0.25vw, 0.6rem) clamp(0.52rem, 0.45rem + 0.35vw, 0.65rem);
  min-width: 0;
  max-width: 100%;
  flex-shrink: 1;
}

.lig-flow-layer-title {
  font-size: clamp(0.78rem, 0.72rem + 0.28vw, 0.85rem);
  font-weight: 700;
  text-align: center;
  line-height: 1.2;
  color: #1e40af;
}

.lig-flow-layer-inner {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  gap: clamp(0.28rem, 0.22rem + 0.25vw, 0.35rem) clamp(0.24rem, 0.18rem + 0.2vw, 0.3rem);
}

.lig-flow-node--module {
  background: #f0fdfa;
  color: #0f766e;
  border: 1px solid rgba(13, 148, 136, 0.28);
}

.lig-flow-var {
  font-weight: 600;
  font-size: clamp(0.82rem, 0.76rem + 0.3vw, 0.9rem);
  color: var(--lig-ink);
  white-space: nowrap;
  text-align: center;
  flex-shrink: 0;
  transition: font-size 0.22s ease;
}

.lig-flow-var sup {
  font-size: 0.72em;
  font-weight: 600;
}

.lig-flow-node--mid {
  background: #fff7ed;
  color: #c2410c;
  border-color: rgba(234, 88, 12, 0.2);
}

.lig-flow-arrow {
  flex-shrink: 0;
  color: var(--lig-muted);
  font-size: 0;
  font-weight: 700;
  line-height: 1;
  user-select: none;
}

.lig-flow-arrow::before {
  content: "→";
  font-size: clamp(0.95rem, 0.88rem + 0.25vw, 1.05rem);
  line-height: 1;
  transition: transform 0.22s ease;
}

/* Tablet / medium: compact horizontal with graceful wrap */
@media (max-width: 960px) {
  .lig-flow {
    flex-wrap: wrap;
    row-gap: 0.55rem;
  }

  .lig-flow-node--layer-block {
    flex-basis: auto;
  }
}

/* Mobile / narrow: vertical stack, down arrows, centered labels */
@media (max-width: 768px) {
  #notation .lig-abstract {
    text-align: center;
  }

  #notation .lig-section-title::after {
    margin-left: auto;
    margin-right: auto;
  }

  .lig-flow {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: center;
    width: 100%;
    max-width: min(18rem, 100%);
    row-gap: 0.45rem;
    padding: 1rem 0.85rem;
  }

  .lig-flow-node,
  .lig-flow-var {
    width: auto;
    max-width: 100%;
    text-align: center;
  }

  .lig-flow-node--layer-block {
    width: 100%;
    max-width: 14.5rem;
    align-self: center;
    align-items: center;
  }

  .lig-flow-layer-inner {
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: center;
    row-gap: 0.4rem;
  }

  .lig-flow-arrow {
    display: flex;
    justify-content: center;
    width: 100%;
  }

  .lig-flow-arrow::before {
    content: "↓";
  }
}

.lig-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

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

@media (max-width: 768px) {
  .lig-grid,
  .lig-grid--two {
    grid-template-columns: 1fr;
  }

  .lig-grid > * {
    min-width: 0;
  }

  .lig-code {
    font-size: 0.78rem;
  }
}

.lig-card {
  background: var(--lig-surface);
  border: 1px solid var(--lig-line);
  border-radius: var(--lig-radius);
  padding: 1.15rem 1.25rem;
  min-width: 0;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.lig-card:hover {
  border-color: rgba(13, 148, 136, 0.28);
  box-shadow: 0 4px 16px rgba(15, 26, 28, 0.05);
}

.lig-card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.02rem;
  color: var(--lig-ink);
}

.lig-card p {
  margin: 0;
  color: var(--lig-sub);
  font-size: 0.94rem;
  line-height: 1.62;
}

.lig-baseline-list {
  margin: 0.7rem 0 0;
  padding-left: 1.1rem;
  font-size: 0.87rem;
  color: var(--lig-sub);
  line-height: 1.55;
}

.lig-card a {
  color: var(--lig-teal);
  font-weight: 600;
}

.lig-code {
  margin: 0;
  padding: 0.85rem 1rem;
  background: #0f1a1c;
  color: #ccfbf1;
  border-radius: 8px;
  font-size: 0.82rem;
  line-height: 1.55;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
  box-sizing: border-box;
  border: 1px solid rgba(20, 184, 166, 0.2);
}

.lig-code code {
  font-family: ui-monospace, "Cascadia Code", monospace;
  display: block;
  white-space: pre;
  width: max-content;
  min-width: 100%;
}

.lig-btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.lig-demo-section {
  padding: 0;
  background: #fff;
  border-top: 1px solid var(--lig-line);
}

.lig-demo-section > .lig-section-inner {
  padding: 3rem 1.25rem 0;
}

.lig-demo-lead {
  color: var(--lig-sub);
  margin: 0;
  line-height: 1.65;
  font-size: 0.95rem;
  max-width: 42rem;
}

.lig-demo-lead code {
  background: #ecfdf5;
  color: #0f766e;
  padding: 0.1em 0.32em;
  border-radius: 4px;
  font-size: 0.88em;
}

.lig-demo-section .lig-btn-row {
  margin-top: 1rem;
  margin-bottom: 1.5rem;
}

.lig-demo-frame-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  border-top: 1px solid var(--lig-line);
  overflow: hidden;
  background: #fff;
  cursor: pointer;
}

.lig-demo-frame-wrap:hover .lig-demo-frame-hit {
  background: rgba(13, 148, 136, 0.04);
}

.lig-demo-frame-hit {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 1rem;
  text-decoration: none;
  color: var(--lig-teal);
  font-size: 0.9rem;
  font-weight: 600;
  background: transparent;
  transition: background 0.15s ease;
}

.lig-demo-frame-hit::after {
  content: "Click to open interactive demo →";
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(13, 148, 136, 0.25);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
  opacity: 0.88;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.lig-demo-frame-wrap:hover .lig-demo-frame-hit::after {
  opacity: 1;
  transform: translateY(-2px);
}

.lig-demo-frame {
  display: block;
  width: 100%;
  /* Fallback before postMessage; JS sizes from embed content (max 92vh). */
  height: 720px;
  min-height: 480px;
  border: none;
  pointer-events: none;
}

.lig-cite-pending {
  margin: 0.75rem 0 0;
  padding: 0.85rem 1rem;
  color: var(--lig-sub);
  font-size: 0.95rem;
  line-height: 1.65;
  border-left: 3px solid var(--lig-teal);
  background: rgba(255, 255, 255, 0.65);
  border-radius: 0 8px 8px 0;
}

.lig-cite-pending .pub-soon {
  margin-right: 0.45rem;
  vertical-align: middle;
}

.lig-cite-box {
  margin-top: 1rem;
  padding: 1rem 1.1rem;
  background: #0f1a1c;
  border-radius: var(--lig-radius);
  color: #94a3b8;
  font-size: 0.8rem;
  line-height: 1.5;
  font-family: ui-monospace, monospace;
  border: 1px solid rgba(20, 184, 166, 0.15);
}

.lig-ref-item + .lig-ref-item {
  margin-top: 1.75rem;
}

.lig-ref-entry {
  margin: 0;
  color: var(--lig-sub);
  font-size: 0.95rem;
  line-height: 1.72;
}

.lig-ref-entry a {
  color: var(--lig-teal);
  font-weight: 600;
}

.lig-bibtex-details {
  margin-top: 1rem;
}

.lig-bibtex-details summary {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--lig-navy);
  list-style: none;
  padding: 0.45rem 0.85rem;
  border-radius: 8px;
  border: 1px solid rgba(30, 58, 95, 0.28);
  background: var(--lig-surface);
  transition: background 0.15s ease, border-color 0.15s ease;
}

.lig-bibtex-details summary::-webkit-details-marker {
  display: none;
}

.lig-bibtex-details summary::before {
  content: "▸";
  font-size: 0.75rem;
  color: var(--lig-teal);
  transition: transform 0.15s ease;
}

.lig-bibtex-details[open] summary::before {
  transform: rotate(90deg);
}

.lig-bibtex-details summary:hover {
  background: var(--lig-navy-soft);
  border-color: var(--lig-navy);
}

.lig-bibtex-details .lig-code {
  margin-top: 0.65rem;
}

.lig-footer {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--lig-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--lig-line);
  background: rgba(255, 255, 255, 0.85);
}

.lig-footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem 1.1rem;
  margin-bottom: 0.65rem;
  font-size: 0.9rem;
  font-weight: 600;
}

.lig-footer-nav a {
  color: var(--lig-teal);
  text-decoration: none;
}

.lig-footer-nav a:hover {
  text-decoration: underline;
}

.lig-footer small {
  display: block;
  font-size: 0.8rem;
  color: var(--lig-muted);
}

.lig-footer a {
  color: var(--lig-teal);
  font-weight: 600;
}

/* Demo standalone page header */
.lig-hero-banner.lig-hero-banner--demo {
  padding: 1.25rem 1rem 1rem;
  margin-bottom: 0;
  background: linear-gradient(
    165deg,
    #ecfdf5 0%,
    #f0fdfa 28%,
    #f8fafb 62%,
    var(--lig-bg) 100%
  );
  border-bottom: 1px solid var(--lig-line);
}

body.lig-site:not(.lig-demo-embed) {
  min-height: 100vh;
  background: var(--lig-bg);
}

body.lig-site:not(.lig-demo-embed) .z2z-page-header {
  margin-top: 1.25rem;
}

.lig-hero-banner--demo::after {
  display: none;
}

.lig-hero-banner--demo .lig-hero-inner {
  text-align: left;
  max-width: min(96vw, 52rem);
}

.lig-hero-banner--demo .lig-hero-logo {
  width: min(280px, 70vw);
  margin: 0 0 0.75rem;
}

.lig-hero-banner--demo .pub-title {
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-weight: 700;
  margin: 0 0 0.5rem;
  color: var(--lig-ink);
}

.lig-hero-banner--demo .pub-subtitle {
  font-size: 0.9rem;
  margin: 0 0 0.65rem;
  text-align: left;
}

.lig-hero-banner--demo .pub-authors-block {
  margin: 0 0 0.65rem;
  text-align: left;
}

.lig-hero-banner--demo .pub-authors-line {
  font-size: 0.9rem;
}

.lig-hero-banner--demo .pub-affil-list {
  font-size: 0.82rem;
}

.lig-hero-banner--demo .pub-contact {
  margin: 0 0 0.75rem;
  font-size: 0.84rem;
  color: var(--lig-sub);
}

.lig-hero-banner--demo .pub-contact a {
  color: var(--lig-teal);
  font-weight: 600;
  text-decoration: none;
}

.lig-hero-banner--demo .pub-contact a:hover {
  text-decoration: underline;
}

.lig-hero-banner--demo .pub-links {
  margin-top: 0.5rem;
  justify-content: flex-start;
}

.lig-hero-banner--demo .pub-btn {
  padding: 0.45rem 0.9rem;
  font-size: 0.82rem;
}

body.lig-demo-embed,
html.lig-iframe-embed body {
  background: #fff;
  padding: 8px 12px 16px !important;
}

html.lig-iframe-embed .lig-hero-banner {
  display: none !important;
}

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

  .pub-btn,
  .lig-route-card,
  .lig-card,
  .curve-preset-btn,
  .control-reset-btn {
    transition: none !important;
  }

  .pub-btn:hover {
    transform: none;
  }
}