:root {
  --bg: #0b1517;
  --bg-elevated: #101e21;
  --bg-card: #142529;
  --bg-card-hover: #182d32;
  --bg-card-alt: #0e1b1e;
  --ink: #eef7f5;
  --ink-muted: #9eb7b4;
  --ink-dim: #6f8a87;
  --signal: #38d6c4;
  --signal-soft: rgba(56, 214, 196, 0.13);
  --amber: #f4ae42;
  --amber-soft: rgba(244, 174, 66, 0.14);
  --ember: #f06a3b;
  --ember-soft: rgba(240, 106, 59, 0.14);
  --violet: #a78bfa;
  --border: rgba(158, 183, 180, 0.17);
  --border-strong: rgba(56, 214, 196, 0.44);
  --radius: 12px;
  --radius-sm: 8px;
  --nav-h: 64px;
  --font-display: "Barlow Condensed", "IBM Plex Sans", "Noto Sans JP", "Noto Sans KR", "Noto Sans SC", "Noto Sans Devanagari", "Noto Sans Tamil", system-ui, -apple-system, sans-serif;
  --font-sans: "IBM Plex Sans", "Noto Sans Devanagari", "Noto Sans Tamil", "Noto Sans SC", "Noto Sans JP", "Noto Sans KR", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --max-w: 1240px;
}

*, *::before, *::after {
  box-sizing: border-box;
}

figure {
  margin: 0;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 4%, rgba(56, 214, 196, 0.11), transparent 34%),
    radial-gradient(circle at 88% 10%, rgba(244, 174, 66, 0.09), transparent 32%),
    var(--bg);
  overflow-x: hidden;
}

a {
  color: var(--signal);
  text-decoration: none;
  transition: color 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}
a:hover {
  color: var(--amber);
}

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: rgba(56, 214, 196, 0.09);
  color: #bfece6;
  padding: 0.1rem 0.36rem;
  border-radius: 4px;
}

/* ── Sticky Top Navigation + Scroll Progress ── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(11, 21, 23, 0.88);
  border-bottom: 1px solid var(--border);
}
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 2.5px;
  width: 0%;
  background: linear-gradient(90deg, var(--signal), var(--amber), var(--ember));
  transition: width 0.08s linear;
}
.site-nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  min-height: var(--nav-h);
  padding: 0.55rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  flex-shrink: 0;
}
.brand:hover {
  color: var(--ink);
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--signal), #1ca394);
  color: #061315;
  font-weight: 800;
  font-size: 0.95rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.84rem;
  font-weight: 600;
}
.nav-links a {
  color: var(--ink-muted);
  padding: 0.36rem 0.65rem;
  border-radius: 999px;
  border: 1px solid transparent;
  white-space: nowrap;
}
.nav-links a:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.04);
}
.nav-links a.active {
  color: var(--signal);
  background: var(--signal-soft);
  border-color: rgba(56, 214, 196, 0.34);
}

.mobile-nav-actions {
  display: none;
  align-items: center;
  gap: 0.5rem;
}
.menu-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.42rem 0.72rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

@media (max-width: 980px) {
  .mobile-nav-actions {
    display: inline-flex;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    padding: 0.75rem 1.25rem 1rem;
    background: rgba(11, 21, 23, 0.97);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.45);
    gap: 0.3rem;
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    padding: 0.6rem 0.85rem;
    border-radius: 8px;
    font-size: 0.92rem;
  }
}

/* ── Layout Containers & Anchor Scroll Margin ── */
.container {
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: 0 1.25rem;
}
section.band, section.hero {
  scroll-margin-top: calc(var(--nav-h) + 12px);
}
section.band {
  padding: 4.25rem 0;
  border-bottom: 1px solid var(--border);
}
section.band-alt {
  background: rgba(16, 30, 33, 0.6);
}
@media (max-width: 640px) {
  section.band {
    padding: 3rem 0;
  }
}

/* Critical Grid Blowout Protection */
.two-col > *,
.papers-grid > *,
.tracks-grid > *,
.robot-media-grid > *,
.fig-grid > *,
.acts-grid > *,
.panel,
.paper-card {
  min-width: 0;
  max-width: 100%;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  color: var(--signal);
  margin: 0 0 0.55rem;
}
h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.06;
  letter-spacing: 0.015em;
  margin: 0;
}
h1 {
  font-size: clamp(2.25rem, 4.9vw, 4.1rem);
  font-weight: 800;
  text-transform: uppercase;
}
h2 {
  font-size: clamp(1.75rem, 3.3vw, 2.65rem);
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: 0.65rem;
}
h3 {
  font-size: 1.32rem;
  font-weight: 700;
  text-transform: uppercase;
}
.lead {
  font-size: 1.05rem;
  color: var(--ink-muted);
  max-width: 76ch;
  margin: 0.6rem 0 0;
}

/* ── Hero & Audience Quick-Tracks ── */
.hero {
  padding: 3.25rem 0 3.25rem;
  border-bottom: 1px solid var(--border);
}
.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 1rem;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  padding: 0.25rem 0.68rem;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--ink);
  max-width: 100%;
}
.pill-signal {
  border-color: var(--border-strong);
  background: var(--signal-soft);
  color: var(--signal);
}
.pill-amber {
  border-color: rgba(244, 174, 66, 0.45);
  background: var(--amber-soft);
  color: var(--amber);
}
.pill-ember {
  border-color: rgba(240, 106, 59, 0.45);
  background: var(--ember-soft);
  color: #ff9a76;
}

.authors-row {
  margin-top: 1.15rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem 2.25rem;
  align-items: baseline;
}
.author-card strong {
  font-size: 1.04rem;
  color: var(--ink);
}
.author-card span {
  display: block;
  font-size: 0.85rem;
  color: var(--ink-muted);
}

/* Audience Entry Tracks in Hero */
.tracks-grid {
  margin-top: 1.65rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.95rem;
}
@media (max-width: 940px) {
  .tracks-grid {
    grid-template-columns: 1fr;
  }
}
.track-card {
  background: rgba(20, 37, 41, 0.86);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.05rem 1.15rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.85rem;
  transition: border-color 0.18s ease, transform 0.16s ease;
}
.track-card:hover {
  border-color: rgba(56, 214, 196, 0.45);
  transform: translateY(-2px);
}
.track-card.amber-track:hover {
  border-color: rgba(244, 174, 66, 0.55);
}
.track-role {
  font-family: var(--font-mono);
  font-size: 0.71rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--signal);
}
.track-card.amber-track .track-role {
  color: var(--amber);
}
.track-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-top: 0.2rem;
  color: var(--ink);
}
.track-desc {
  font-size: 0.85rem;
  color: var(--ink-muted);
  margin: 0.25rem 0 0;
}
.track-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
}

/* Cloud Sandbox Bar */
.sandbox-bar {
  margin-top: 1rem;
  padding: 0.7rem 0.95rem;
  border-radius: var(--radius-sm);
  background: rgba(14, 27, 30, 0.78);
  border: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
}
.sandbox-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.42rem;
  padding: 0.58rem 1rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.88rem;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--ink);
  cursor: pointer;
  transition: transform 0.13s ease, border-color 0.15s ease, background 0.15s ease;
  line-height: 1.2;
}
.btn:hover {
  transform: translateY(-1px);
  border-color: var(--signal);
  background: var(--bg-card-hover);
  color: var(--ink);
}
.btn-primary {
  background: var(--signal);
  border-color: var(--signal);
  color: #061618;
}
.btn-primary:hover {
  background: #55e4d4;
  border-color: #55e4d4;
  color: #061618;
}
.btn-amber {
  background: rgba(244, 174, 66, 0.16);
  border-color: rgba(244, 174, 66, 0.52);
  color: #ffd184;
}
.btn-amber:hover {
  background: rgba(244, 174, 66, 0.26);
  border-color: var(--amber);
  color: #fff3de;
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--border);
  color: var(--ink-muted);
}
.btn-ghost:hover {
  color: var(--ink);
  border-color: var(--signal);
}
.btn-sm {
  padding: 0.38rem 0.72rem;
  font-size: 0.79rem;
}
.btn.active-gate {
  border-color: var(--signal);
  background: var(--signal-soft);
  color: var(--signal);
}

/* Metrics Strip */
.metrics-grid {
  margin-top: 1.35rem;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.7rem;
}
@media (max-width: 1080px) {
  .metrics-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}
@media (max-width: 560px) {
  .metrics-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.metric-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 0.95rem;
}
.metric-val {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--signal);
  line-height: 1;
}
.metric-val.amber { color: var(--amber); }
.metric-val.ember { color: #ff8c64; }
.metric-lbl {
  margin-top: 0.32rem;
  font-size: 0.76rem;
  line-height: 1.35;
  color: var(--ink-muted);
}

/* Epistemic Honesty Callout */
.honesty-banner {
  margin-top: 1.25rem;
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius-sm);
  border-left: 3.5px solid var(--amber);
  background: rgba(244, 174, 66, 0.07);
  font-size: 0.86rem;
  color: var(--ink-muted);
}
.honesty-banner strong {
  color: var(--amber);
}

/* ── Section 01: Three-Paper Publication Suite ── */
.papers-grid {
  margin-top: 1.6rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
}
@media (max-width: 980px) {
  .papers-grid {
    grid-template-columns: 1fr;
  }
}
.paper-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.1rem;
}
.paper-card.featured {
  border-color: var(--border-strong);
  box-shadow: 0 12px 32px -18px rgba(56, 214, 196, 0.45);
}
.paper-card.robotics {
  border-color: rgba(244, 174, 66, 0.42);
}
.paper-card p {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: var(--ink-muted);
}
.paper-meta-list {
  margin: 0.7rem 0 0;
  padding-left: 1.1rem;
  font-size: 0.83rem;
  color: var(--ink-muted);
}
.paper-meta-list li {
  margin-bottom: 0.25rem;
}

.lang-bar {
  margin-top: 1.35rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.lang-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
  margin-top: 0.7rem;
}
.lang-btn {
  padding: 0.36rem 0.78rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--ink-muted);
  font-family: var(--font-sans);
  font-size: 0.81rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}
.lang-btn:hover {
  border-color: var(--signal);
  color: var(--ink);
}
.lang-btn.active {
  background: var(--signal);
  border-color: var(--signal);
  color: #061517;
}
.abstract-box {
  margin-top: 0.9rem;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-sm);
  background: rgba(11, 21, 23, 0.74);
  border: 1px solid var(--border);
  font-size: 0.92rem;
  line-height: 1.68;
  color: var(--ink);
}

/* Locale-specific CJK & Indic typography (avoids Han Unification glyph mismatch & matra crowding) */
#active-lang-title {
  font-family: var(--font-sans);
  text-transform: none;
  line-height: 1.38;
  letter-spacing: -0.01em;
  font-size: 1.24rem;
  font-weight: 700;
}
:lang(ja) {
  font-family: "IBM Plex Sans", "Noto Sans JP", sans-serif;
}
:lang(ko) {
  font-family: "IBM Plex Sans", "Noto Sans KR", sans-serif;
  word-break: keep-all;
}
:lang(zh-Hans) {
  font-family: "IBM Plex Sans", "Noto Sans SC", sans-serif;
}
:lang(hi) {
  font-family: "IBM Plex Sans", "Noto Sans Devanagari", sans-serif;
}
:lang(ta) {
  font-family: "IBM Plex Sans", "Noto Sans Tamil", sans-serif;
}
.abstract-box:lang(ja),
.abstract-box:lang(ko),
.abstract-box:lang(zh-Hans),
.abstract-box:lang(hi),
.abstract-box:lang(ta) {
  line-height: 1.82;
}

/* ── Two-Column Interactive Layouts ── */
.two-col {
  margin-top: 1.6rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.35rem;
  align-items: start;
}
.two-col.cite-grid {
  grid-template-columns: minmax(0, 0.94fr) minmax(0, 1.06fr);
}
@media (max-width: 940px) {
  .two-col,
  .two-col.cite-grid {
    grid-template-columns: 1fr;
  }
}
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.3rem;
}

/* Bloch Sphere */
.bloch-canvas-wrap {
  width: 100%;
  height: 360px;
  border-radius: var(--radius-sm);
  background: radial-gradient(circle at 50% 48%, #193439 0%, #091214 78%);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  touch-action: none;
  cursor: grab;
}
.bloch-canvas-wrap:active {
  cursor: grabbing;
}
.bloch-overlay-tag {
  position: absolute;
  top: 0.6rem;
  left: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.69rem;
  color: var(--ink-muted);
  background: rgba(11, 21, 23, 0.82);
  padding: 0.18rem 0.5rem;
  border-radius: 5px;
  border: 1px solid var(--border);
  pointer-events: none;
}
.gate-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.8rem;
}
.gate-cue {
  margin-top: 0.55rem;
  font-size: 0.8rem;
  color: var(--ink-muted);
  min-height: 1.3rem;
}
.slider-row {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr) 48px;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.55rem;
  font-size: 0.82rem;
}
.slider-row input[type="range"] {
  width: 100%;
  accent-color: var(--signal);
  cursor: pointer;
}
.ket-readout {
  margin-top: 0.8rem;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  background: #091214;
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.79rem;
  color: var(--amber);
  overflow-wrap: anywhere;
}
.prob-bars {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 0.7rem;
}
.prob-bar-track {
  height: 8px;
  background: #081012;
  border-radius: 999px;
  overflow: hidden;
  margin-top: 0.25rem;
}
.prob-bar-fill {
  height: 100%;
  background: var(--signal);
  transition: width 0.22s ease;
}
.prob-bar-fill.buck {
  background: var(--ember);
}

/* Laban x Krump x Quantum Cards */
.lkq-list {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.8rem;
}
.lkq-item {
  width: 100%;
  text-align: left;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(11, 21, 23, 0.6);
  color: var(--ink);
  cursor: pointer;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 0.55rem;
  transition: border-color 0.15s ease, background 0.15s ease;
}
@media (max-width: 520px) {
  .lkq-item {
    grid-template-columns: 1fr auto;
  }
  .lkq-item .lkq-op {
    grid-column: 1 / -1;
    text-align: left !important;
  }
}
.lkq-item:hover, .lkq-item.active {
  border-color: var(--signal);
  background: rgba(56, 214, 196, 0.11);
}
.lkq-move {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.79rem;
  color: var(--amber);
  padding: 0.16rem 0.5rem;
  border-radius: 5px;
  background: rgba(244, 174, 66, 0.14);
  white-space: nowrap;
}
.effort-actions-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.42rem;
  margin-top: 0.75rem;
}
@media (max-width: 520px) {
  .effort-actions-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.effort-chip {
  padding: 0.44rem 0.5rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #0b1619;
  color: var(--ink-muted);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: all 0.14s ease;
}
.effort-chip.active, .effort-chip:hover {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(244, 174, 66, 0.12);
}

/* ── DisCoPy String Diagram Stepper ── */
.discopy-svg-wrap {
  background: #091214;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 310px;
}
.discopy-layer {
  opacity: 0.2;
  transition: opacity 0.25s ease, filter 0.25s ease;
}
.discopy-layer.lit {
  opacity: 1;
}
.discopy-layer.current {
  opacity: 1;
  filter: drop-shadow(0 0 8px rgba(56, 214, 196, 0.68));
}
.step-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.7rem;
}
.step-pill {
  padding: 0.26rem 0.58rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #0b1619;
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  cursor: pointer;
}
.step-pill.active, .step-pill:hover {
  border-color: var(--signal);
  color: var(--signal);
  background: var(--signal-soft);
}

/* ── KrumpRobot Media Stage + Dark-Theme 140 BPM Audio Transport ── */
.robot-media-grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: 1.35rem;
  align-items: start;
}
@media (max-width: 940px) {
  .robot-media-grid {
    grid-template-columns: 1fr;
  }
}
.media-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.65rem;
}
.media-tab {
  padding: 0.4rem 0.75rem;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--ink-muted);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.14s ease;
}
.media-tab:hover {
  color: var(--ink);
  border-color: var(--amber);
}
.media-tab.active {
  background: rgba(244, 174, 66, 0.17);
  border-color: var(--amber);
  color: #ffd58c;
}
.video-frame-4panel {
  background: #060d0e;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.video-frame-4panel video {
  width: 100%;
  max-height: 580px;
  height: auto;
  object-fit: contain;
  border-radius: 6px;
  background: #000;
  display: block;
}

/* Custom Dark Audio Player */
.dark-audio-player {
  margin-top: 0.55rem;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  background: #091214;
  border: 1px solid rgba(244, 174, 66, 0.34);
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 0.65rem;
}
@media (max-width: 480px) {
  .dark-audio-player {
    grid-template-columns: auto 1fr auto;
  }
  .dark-audio-player .bpm-tag {
    display: none;
  }
}
.audio-play-btn {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  border: none;
  background: var(--amber);
  color: #081214;
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
  display: inline-grid;
  place-items: center;
  transition: transform 0.12s ease, background 0.14s ease;
}
.audio-play-btn:hover {
  transform: scale(1.05);
  background: #ffc164;
}
.audio-scrubber-col {
  display: grid;
  gap: 0.22rem;
  min-width: 0;
}
.audio-scrubber-col input[type="range"] {
  width: 100%;
  accent-color: var(--amber);
  cursor: pointer;
  margin: 0;
}
.audio-meta-row {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-muted);
}
.beat-led {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ink-dim);
  margin-right: 0.3rem;
}
.beat-led.playing {
  background: var(--signal);
  box-shadow: 0 0 8px var(--signal);
  animation: beatPulse 0.4285s infinite alternate ease-in-out;
}
@keyframes beatPulse {
  from { transform: scale(0.85); opacity: 0.55; }
  to { transform: scale(1.25); opacity: 1; }
}

.phrase-timeline {
  display: grid;
  gap: 0.44rem;
  margin-top: 0.8rem;
}
.phrase-btn {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) auto;
  gap: 0.6rem;
  align-items: center;
  width: 100%;
  text-align: left;
  padding: 0.58rem 0.8rem;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: rgba(11, 21, 23, 0.7);
  color: var(--ink);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.83rem;
  transition: all 0.14s ease;
}
.phrase-btn:hover, .phrase-btn.active {
  border-color: var(--amber);
  background: rgba(244, 174, 66, 0.14);
}
.phrase-time {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--amber);
}
.phrase-bars {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-dim);
}

/* ── 4-Figure Benchmark Gallery (With Lightbox Zoom) ── */
.fig-grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.15rem;
}
@media (max-width: 780px) {
  .fig-grid {
    grid-template-columns: 1fr;
  }
}
.fig-card {
  margin: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  transition: border-color 0.16s ease, transform 0.16s ease;
  cursor: zoom-in;
}
.fig-card:hover {
  border-color: var(--signal);
  transform: translateY(-2px);
}
.fig-card img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  background: #fff;
  display: block;
}
.fig-card figcaption {
  margin-top: 0.65rem;
  font-size: 0.83rem;
  color: var(--ink-muted);
}

/* ── 4-Act Theatrical Grid ── */
.acts-grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}
@media (max-width: 980px) {
  .acts-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 560px) {
  .acts-grid {
    grid-template-columns: 1fr;
  }
}
.act-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem;
}

/* ── Census Table ── */
.table-wrap {
  margin-top: 1.35rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
}
table.census {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
  min-width: 680px;
}
table.census th,
table.census td {
  padding: 0.7rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
table.census tbody tr:hover {
  background: rgba(56, 214, 196, 0.04);
}
table.census th {
  background: rgba(11, 21, 23, 0.88);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--signal);
}
.badge-pass {
  display: inline-block;
  padding: 0.16rem 0.52rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.71rem;
  font-weight: 700;
  background: rgba(56, 214, 196, 0.15);
  color: var(--signal);
  white-space: nowrap;
}

/* ── Section 08: Structured Resource Cards, Terminal Box & Zero-Overflow BibTeX ── */
.terminal-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  padding: 0.65rem 0.85rem;
  background: #081012;
  border: 1px solid rgba(56, 214, 196, 0.32);
  border-radius: var(--radius-sm);
  max-width: 100%;
}
.terminal-box code {
  min-width: 0;
  flex: 1;
  background: transparent;
  padding: 0;
  color: var(--signal);
  font-size: 0.82rem;
  white-space: nowrap;
  overflow-x: auto;
}

.resource-list {
  margin-top: 0.9rem;
  display: grid;
  gap: 0.55rem;
}
.resource-card {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: rgba(11, 21, 23, 0.62);
  color: var(--ink);
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.13s ease;
}
.resource-card:hover {
  border-color: var(--signal);
  background: rgba(56, 214, 196, 0.09);
  color: var(--ink);
  transform: translateY(-1px);
}
.resource-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  font-size: 1.1rem;
}
.resource-title {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--ink);
  line-height: 1.25;
}
.resource-slug {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
  overflow-wrap: anywhere;
  margin-top: 0.12rem;
}
.resource-ext {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--signal);
}

pre.code-block {
  margin: 0.75rem 0 0;
  padding: 0.95rem 1.05rem;
  border-radius: var(--radius-sm);
  background: #081012;
  border: 1px solid var(--border);
  max-width: 100%;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.77rem;
  line-height: 1.55;
  color: #d6ebe8;
}
pre.code-block.wrap-lines {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
  overflow-x: hidden;
}

/* ── Modals (In-Page PDF Preview & Image Lightbox) + Toast + Back-to-Top ── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 120;
  background: rgba(5, 11, 13, 0.84);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}
.modal-backdrop.open {
  display: flex;
}
.modal-dialog {
  width: min(1100px, 100%);
  height: min(88vh, 920px);
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.65);
}
.modal-header {
  padding: 0.75rem 1.1rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}
.modal-body {
  flex: 1;
  background: #091113;
  position: relative;
}
.modal-body iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.lightbox-dialog {
  max-width: min(1020px, 100%);
  max-height: 90vh;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.lightbox-dialog img {
  max-width: 100%;
  max-height: 74vh;
  object-fit: contain;
  background: #fff;
  border-radius: 6px;
}

.toast {
  position: fixed;
  bottom: 1.35rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  z-index: 140;
  background: #102629;
  border: 1px solid var(--signal);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.79rem;
  padding: 0.55rem 1rem;
  border-radius: 999px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.back-to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 55;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: rgba(16, 33, 37, 0.92);
  color: var(--signal);
  font-size: 1.05rem;
  font-weight: 800;
  cursor: pointer;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease, background 0.15s ease;
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--signal);
  color: #061517;
}

footer.site-footer {
  padding: 2.75rem 0 3.5rem;
  color: var(--ink-muted);
  font-size: 0.86rem;
}

/* ── Inline & Expandable Live Paper Preview Panel ── */
.reader-panel {
  margin-top: 1.25rem;
  background: #0c181b;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 18px 46px -16px rgba(0, 0, 0, 0.65);
  scroll-margin-top: calc(var(--nav-h) + 14px);
  display: flex;
  flex-direction: column;
}
.reader-panel.fullscreen {
  position: fixed;
  inset: 0.85rem;
  margin-top: 0;
  z-index: 150;
  border-radius: var(--radius);
  box-shadow: 0 0 0 100vmax rgba(4, 10, 12, 0.86), 0 28px 80px rgba(0, 0, 0, 0.85);
}
.reader-doc-tabs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.55rem;
  padding: 0.7rem 1rem;
  background: #122327;
  border-bottom: 1px solid var(--border);
}
.reader-doc-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.reader-doc-btn {
  padding: 0.36rem 0.75rem;
  border-radius: 7px;
  border: 1px solid var(--border);
  background: rgba(11, 21, 23, 0.75);
  color: var(--ink-muted);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.14s ease;
}
.reader-doc-btn:hover {
  color: var(--ink);
  border-color: var(--signal);
}
.reader-doc-btn.active {
  background: var(--signal);
  border-color: var(--signal);
  color: #061517;
}
.reader-doc-btn.amber-doc.active {
  background: var(--amber);
  border-color: var(--amber);
  color: #081315;
}

.reader-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.55rem 0.9rem;
  padding: 0.58rem 1rem;
  background: #0e1c1f;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.76rem;
}
.reader-controls-group {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.38rem;
}
.reader-icon-btn {
  padding: 0.28rem 0.58rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.14s ease, background 0.14s ease;
}
.reader-icon-btn:hover {
  border-color: var(--signal);
  background: var(--bg-card-hover);
}
.reader-page-input {
  width: 3.1rem;
  padding: 0.24rem 0.35rem;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: #071012;
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  text-align: center;
}

.reader-bookmarks {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  padding: 0.48rem 1rem;
  background: rgba(9, 18, 20, 0.9);
  border-bottom: 1px solid var(--border);
}
.bookmark-chip {
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid rgba(158, 183, 180, 0.2);
  background: rgba(20, 37, 41, 0.7);
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.69rem;
  cursor: pointer;
  transition: all 0.14s ease;
}
.bookmark-chip:hover,
.bookmark-chip.active {
  border-color: var(--amber);
  color: var(--amber);
  background: rgba(244, 174, 66, 0.13);
}

.reader-viewport {
  height: 760px;
  overflow-y: auto;
  overflow-x: auto;
  background: #070e10;
  padding: 1.25rem 0.85rem;
  position: relative;
  transition: height 0.2s ease;
}
.reader-panel.tall .reader-viewport {
  height: 1120px;
}
.reader-panel.fullscreen .reader-viewport {
  flex: 1;
  height: auto;
}
.reader-panel.collapsed .reader-toolbar,
.reader-panel.collapsed .reader-bookmarks,
.reader-panel.collapsed .reader-viewport {
  display: none;
}
@media (max-width: 680px) {
  .reader-viewport {
    height: 540px;
    padding: 0.75rem 0.4rem;
  }
}

.reader-canvas-stream {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.15rem;
  min-height: 100%;
}
.pdf-page-slot {
  background: #ffffff;
  border-radius: 4px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.55);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.pdf-page-slot canvas {
  display: block;
  border-radius: 4px;
}
.pdf-page-badge {
  position: absolute;
  bottom: 0.45rem;
  right: 0.55rem;
  background: rgba(11, 21, 23, 0.76);
  color: #eef7f5;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  padding: 0.12rem 0.42rem;
  border-radius: 4px;
  pointer-events: none;
}
.pdf-loading-msg {
  color: var(--ink-muted);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 3rem 1rem;
  text-align: center;
}

/* ── Sleek Dark-Native Interactive Benchmark Charts (Apache ECharts) ── */
.echart-box {
  width: 100%;
  height: 315px;
  background: radial-gradient(circle at 50% 0%, rgba(45, 212, 191, 0.06), rgba(9, 18, 20, 0.95) 72%);
  border-bottom: 1px solid var(--border);
  padding: 0.35rem 0.25rem 0.15rem;
}
.fig-card.interactive-mode {
  cursor: default;
}
.fig-card.interactive-mode:hover {
  transform: none;
}
.fig-card.interactive-mode img {
  display: none;
}
.fig-card:not(.interactive-mode) .echart-box {
  display: none;
}

/* ── Section 08: Interactive Universal Knowledge Graph Explorer (Apache ECharts) ── */
.kg-header-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}
.kg-toolbar-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
}
.kg-controls-bar {
  margin-top: 1.25rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
}
.kg-search-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
}
.kg-search-input {
  flex: 1 1 320px;
  padding: 0.52rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #081113;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.86rem;
  outline: none;
  transition: border-color 0.15s ease;
}
.kg-search-input:focus {
  border-color: var(--signal);
}
.kg-count-badge {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--amber);
  background: rgba(244, 174, 66, 0.1);
  border: 1px solid rgba(244, 174, 66, 0.3);
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  white-space: nowrap;
}
.kg-domain-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.36rem;
  vertical-align: middle;
}
.kg-layout {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: minmax(0, 1.48fr) minmax(310px, 0.92fr);
  gap: 1.2rem;
  align-items: start;
}
@media (max-width: 980px) {
  .kg-layout {
    grid-template-columns: 1fr;
  }
}
.kg-canvas-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.kg-canvas-box {
  width: 100%;
  height: 580px;
  background: radial-gradient(circle at 50% 45%, rgba(45, 212, 191, 0.07) 0%, #071012 78%);
}
@media (max-width: 680px) {
  .kg-canvas-box {
    height: 440px;
  }
}
.kg-canvas-hint {
  padding: 0.55rem 0.9rem;
  border-top: 1px solid var(--border);
  background: rgba(9, 18, 20, 0.88);
  font-family: var(--font-mono);
  font-size: 0.71rem;
  color: var(--ink-muted);
  text-align: center;
}
.kg-inspector {
  max-height: 625px;
  overflow-y: auto;
}
.kg-inspector-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.45rem;
}
.kg-cat-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-muted);
  padding: 0.16rem 0.5rem;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: rgba(9, 18, 20, 0.65);
}
.kg-node-id {
  margin-top: 0.15rem;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--ink-muted);
}
.kg-formula-label {
  margin-top: 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
}
.kg-formula-box {
  margin: 0.35rem 0 0;
  white-space: pre-wrap;
  line-height: 1.45;
}
.kg-node-desc {
  margin: 0.75rem 0 0;
  font-size: 0.87rem;
  line-height: 1.58;
  color: var(--ink);
}
.kg-rel-section {
  margin-top: 0.75rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border);
}
.kg-rel-list {
  margin-top: 0.42rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}
.kg-rel-btn {
  width: 100%;
  text-align: left;
  padding: 0.45rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: rgba(8, 17, 19, 0.72);
  color: var(--ink);
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.35rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  transition: border-color 0.14s ease, background 0.14s ease;
}
.kg-rel-btn:hover {
  border-color: var(--signal);
  background: rgba(45, 212, 191, 0.1);
}
.kg-rel-verb {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--signal);
}
.kg-rel-empty {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
  padding: 0.2rem 0;
}




/* ── Core UX Overrides: Sticky Header Fix, Loaded Font Stack & Clean Heading Code ── */
:root {
  --font-sans: "Barlow", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
html, body {
  overflow-x: clip !important;
}
h1 code, h2 code, h3 code {
  font-family: inherit;
  font-size: 0.96em;
  letter-spacing: 0.02em;
  color: var(--signal);
  background: rgba(56, 214, 196, 0.11);
  border: 1px solid rgba(56, 214, 196, 0.28);
  padding: 0.02rem 0.34rem;
  border-radius: 6px;
}

/* Mobile Navbar Fit (Zero Horizontal Clipping at 360px–430px) */
@media (max-width: 640px) {
  .site-nav-inner {
    padding: 0.45rem 0.8rem;
    gap: 0.4rem;
  }
  .brand {
    font-size: 1.0rem;
    letter-spacing: 0.025em;
    gap: 0.42rem;
    min-width: 0;
  }
  .brand > span:last-child {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 175px;
  }
  .brand-mark {
    width: 1.75rem;
    height: 1.75rem;
    font-size: 0.84rem;
    flex-shrink: 0;
  }
  .mobile-nav-actions {
    gap: 0.35rem;
    flex-shrink: 0;
  }
  .mobile-nav-actions .btn-sm,
  .menu-toggle {
    padding: 0.36rem 0.56rem;
    font-size: 0.75rem;
    white-space: nowrap;
  }
}

/* ── Benchmark Section Header & Segmented Mode Switcher ── */
.section-head-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 1rem 1.5rem;
  margin-bottom: 0.45rem;
}
.mode-segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  padding: 0.28rem;
  border-radius: 10px;
  background: #0a1416;
  border: 1px solid var(--border-strong);
}
.mode-seg-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.44rem 0.85rem;
  border-radius: 7px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--ink-muted);
  font-family: var(--font-sans);
  font-size: 0.81rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
}
.mode-seg-btn:hover {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.04);
}
.mode-seg-btn.active {
  background: var(--signal);
  color: #061618;
  box-shadow: 0 4px 14px rgba(56, 214, 196, 0.28);
}

.echart-box {
  width: 100%;
  height: 325px;
  background: radial-gradient(circle at 50% 0%, rgba(56, 214, 196, 0.08), rgba(8, 16, 18, 0.96) 74%);
  border: 1px solid rgba(158, 183, 180, 0.14);
  border-radius: 8px;
  padding: 0.4rem 0.3rem 0.2rem;
}
.echart-box.echart-wide {
  height: 340px;
}
.fig-card-wide {
  margin-top: 1.15rem;
}
.figcap-footer {
  margin-top: 0.65rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem 0.75rem;
  padding-top: 0.55rem;
  border-top: 1px solid rgba(158, 183, 180, 0.12);
}
.figcap-footer > span {
  min-width: 0;
  overflow-wrap: anywhere;
}
.fig-zoom-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.32rem;
  padding: 0.24rem 0.6rem;
  border-radius: 6px;
  border: 1px solid rgba(56, 214, 196, 0.32);
  background: rgba(56, 214, 196, 0.08);
  color: var(--signal);
  font-family: var(--font-mono);
  font-size: 0.71rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.14s ease;
}
.fig-zoom-btn:hover {
  background: var(--signal);
  color: #061618;
}

/* ── Quantum Social Prescribing Custom Simulator & Governance Extensions ── */
.qsp-sim-grid {
  margin-top: 1.5rem;
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
  gap: 1.35rem;
  align-items: start;
}
@media (max-width: 960px) {
  .qsp-sim-grid {
    grid-template-columns: 1fr;
  }
}
.preset-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.65rem 0 0.9rem;
}
.preset-chip {
  padding: 0.34rem 0.68rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #0b1619;
  color: var(--ink-muted);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.14s ease;
}
.preset-chip:hover, .preset-chip.active {
  border-color: var(--signal);
  color: var(--signal);
  background: var(--signal-soft);
}
.feature-sliders {
  display: grid;
  gap: 0.5rem;
}
.f-slider-row {
  display: grid;
  grid-template-columns: 185px minmax(0, 1fr) 48px;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.8rem;
}
@media (max-width: 560px) {
  .f-slider-row {
    grid-template-columns: 1fr 44px;
  }
  .f-slider-row input[type="range"] {
    grid-column: 1 / -1;
  }
}
.f-slider-row label {
  color: var(--ink-muted);
  font-weight: 600;
}
.f-slider-row input[type="range"] {
  width: 100%;
  accent-color: var(--signal);
  cursor: pointer;
}
.f-slider-val {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--amber);
  text-align: right;
}
.hilbert-bars {
  display: grid;
  grid-template-columns: repeat(16, minmax(0, 1fr));
  gap: 4px;
  height: 92px;
  align-items: end;
  padding: 0.6rem 0.5rem 0.35rem;
  background: #081012;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-top: 0.65rem;
}
.h-bar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  height: 100%;
  gap: 3px;
}
.h-bar-fill {
  width: 100%;
  background: linear-gradient(180deg, var(--signal), #17796e);
  border-radius: 3px 3px 0 0;
  min-height: 2px;
  transition: height 0.2s ease;
}
.h-bar-lbl {
  font-family: var(--font-mono);
  font-size: 0.56rem;
  color: var(--ink-dim);
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}
.pathway-bars {
  display: grid;
  gap: 0.45rem;
  margin-top: 0.7rem;
}
.pw-row {
  display: grid;
  gap: 0.18rem;
}
.pw-head {
  display: flex;
  justify-content: space-between;
  font-size: 0.79rem;
}
.pw-track {
  height: 8px;
  background: #081012;
  border-radius: 999px;
  overflow: hidden;
}
.pw-fill {
  height: 100%;
  background: var(--signal);
  transition: width 0.22s ease;
}
.pw-fill.top {
  background: linear-gradient(90deg, var(--signal), var(--amber));
}
.safety-gate-box {
  margin-top: 0.85rem;
  padding: 0.75rem 0.95rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(56, 214, 196, 0.38);
  background: rgba(56, 214, 196, 0.08);
  font-size: 0.82rem;
}
.safety-gate-box.escalate {
  border-color: rgba(240, 106, 59, 0.65);
  background: rgba(240, 106, 59, 0.14);
  color: #ffd7c9;
}
.search-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.15rem;
}
.search-input {
  flex: 1;
  min-width: 220px;
  padding: 0.52rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #081012;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.86rem;
}
.search-input:focus {
  outline: none;
  border-color: var(--signal);
}
.hazard-grid {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.95rem;
}
@media (max-width: 820px) {
  .hazard-grid {
    grid-template-columns: 1fr;
  }
}
.hazard-card {
  background: var(--bg-card);
  border: 1px solid rgba(244, 174, 66, 0.36);
  border-left: 4px solid var(--amber);
  border-radius: var(--radius-sm);
  padding: 1rem 1.1rem;
}
.pdf-page-slot img.pdf-fallback-img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 4px;
}

/* ── Multi-Tier Knowledge Graph Explorer (#kg) ── */
.kg-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.15rem;
  padding: 0.85rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.kg-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
  margin-top: 0.7rem;
}
.kg-cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.32rem 0.68rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #0b1619;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.77rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s ease, border-color 0.15s ease;
}
.kg-cat-chip.muted {
  opacity: 0.36;
}
.kg-cat-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex-shrink: 0;
}
.kg-path-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.7rem;
  padding: 0.7rem 0.95rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.kg-select {
  padding: 0.42rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #081012;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  max-width: 100%;
  min-width: 180px;
}
.kg-path-ribbon {
  margin-top: 0.65rem;
  padding: 0.7rem 0.95rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(244, 174, 66, 0.45);
  background: rgba(244, 174, 66, 0.09);
  font-size: 0.82rem;
  line-height: 1.55;
  display: none;
}
.kg-path-ribbon.visible {
  display: block;
}
.kg-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.95fr);
  gap: 1.15rem;
  align-items: start;
}
@media (max-width: 980px) {
  .kg-grid {
    grid-template-columns: 1fr;
  }
}
.echart-kg-box {
  width: 100%;
  height: 580px;
  background: radial-gradient(circle at 50% 45%, rgba(56, 214, 196, 0.08), rgba(8, 16, 18, 0.98) 76%);
  border: 1px solid rgba(158, 183, 180, 0.16);
  border-radius: 8px;
}
@media (max-width: 640px) {
  .echart-kg-box {
    height: 430px;
  }
}
.kg-edge-list {
  display: grid;
  gap: 0.42rem;
  max-height: 240px;
  overflow-y: auto;
  padding-right: 0.2rem;
  margin-top: 0.45rem;
}
.kg-edge-btn {
  width: 100%;
  text-align: left;
  padding: 0.5rem 0.65rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: #081012;
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.14s ease;
}
.kg-edge-btn:hover {
  border-color: var(--signal);
}
.reader-doc-btn {
  cursor: pointer;
}
.emp-fig-grid {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.15rem;
}
@media (max-width: 900px) {
  .emp-fig-grid {
    grid-template-columns: 1fr;
  }
}
.emp-fig-card {
  margin: 0;
  padding: 0.85rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.emp-fig-card img {
  width: 100%;
  height: auto;
  border-radius: 6px;
  background: #ffffff;
  cursor: zoom-in;
}
.emp-fig-card figcaption {
  font-size: 0.82rem;
  color: var(--ink-muted);
  line-height: 1.5;
}


/* ── Quantum-LTC Four-Era Logical-Qubit Simulator Strip ── */
.era-sim-panel {
  margin-top: 1.35rem;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 1.3rem 1.35rem;
}
.era-sim-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.65rem;
}
.era-slider-wrap {
  margin: 0.9rem 0 1.1rem;
}
.era-slider-wrap input[type="range"] {
  width: 100%;
  accent-color: var(--signal);
  cursor: pointer;
}
.era-sim-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
}
@media (max-width: 920px) {
  .era-sim-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 520px) {
  .era-sim-grid {
    grid-template-columns: 1fr;
  }
}
.era-kpi-box {
  background: #081012;
  border: 1px solid var(--border);
  border-left: 3px solid var(--signal);
  border-radius: var(--radius-sm);
  padding: 0.8rem 0.9rem;
}
.era-kpi-box .era-k-lbl {
  font-family: var(--font-mono);
  font-size: 0.69rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-muted);
}
.era-kpi-box .era-k-val {
  margin-top: 0.26rem;
  font-family: var(--font-display);
  font-size: 1.32rem;
  font-weight: 700;
  color: var(--ink);
}
.era-kpi-box .era-k-sub {
  margin-top: 0.16rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-dim);
}