/* ============================================================
   CUHK-X OBSERVATORY — sensor control-room aesthetic
   Chakra Petch (display) + IBM Plex Mono (telemetry)
   ============================================================ */

:root {
  --bg: #05080c;
  --bg2: #070d13;
  --panel: #0a1119;
  --panel2: #0d1622;
  --line: #16222f;
  --line2: #1f3040;
  --text: #d6e3ee;
  --dim: #5f7689;
  --faint: #38495a;

  --depth: #2ee6c8;
  --ir: #ff6a3c;
  --thermal: #ffc23d;
  --radar: #79f08e;
  --imu: #b88cff;
  --skel: #58a6ff;
  --rgbc: #e8eef4;

  --ok: #79f08e;
  --bad: #ff5d5d;

  --disp: "Chakra Petch", sans-serif;
  --mono: "IBM Plex Mono", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.65;
  overflow-x: hidden;
  background-image:
    radial-gradient(1100px 500px at 85% -5%, rgba(46, 230, 200, 0.05), transparent 60%),
    radial-gradient(900px 600px at -10% 30%, rgba(88, 166, 255, 0.04), transparent 55%);
}

/* film grain + scanlines over everything */
.grain {
  position: fixed; inset: 0; z-index: 60; pointer-events: none;
  background:
    repeating-linear-gradient(0deg, rgba(255,255,255,0.014) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
}
.grain::after {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, transparent 55%, rgba(0,0,0,0.5));
}

::selection { background: var(--depth); color: #03100d; }

a { color: var(--depth); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------------------------------------------------------- topbar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; gap: 1.4rem;
  padding: 0.65rem 1.6rem;
  background: rgba(5, 8, 12, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.wordmark { display: flex; align-items: baseline; gap: 0.55rem; text-decoration: none !important; }
.wordmark-box {
  font-family: var(--disp); font-weight: 700; font-size: 1.05rem; letter-spacing: 0.06em;
  color: #051014; background: var(--depth); padding: 0.05rem 0.45rem;
  box-shadow: 0 0 18px rgba(46, 230, 200, 0.35);
}
.wordmark-sub { font-family: var(--disp); font-weight: 600; letter-spacing: 0.34em; color: var(--text); font-size: 0.85rem; }
.topbar-status {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.68rem; letter-spacing: 0.18em; color: var(--dim);
  border: 1px solid var(--line2); padding: 0.25rem 0.7rem; border-radius: 999px;
}
.live-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 8px var(--ok); animation: pulse 1.6s infinite; }
@keyframes pulse { 50% { opacity: 0.35; } }
.topbar-links { margin-left: auto; display: flex; gap: 1.3rem; font-size: 0.78rem; letter-spacing: 0.08em; align-items: center; }
.topbar-links a { color: var(--dim); }
.topbar-links a:hover { color: var(--depth); text-decoration: none; }
.topbar-links a.home-link {
  color: var(--text); border: 1px solid var(--line2); padding: 0.3rem 0.75rem;
  font-family: var(--disp); font-weight: 600; font-size: 0.7rem; letter-spacing: 0.14em;
  white-space: nowrap; transition: all 0.15s ease;
}
.topbar-links a.home-link:hover { color: var(--depth); border-color: var(--depth); text-decoration: none; }

/* challenge link — amber/gold accent, distinct from the teal HUD */
.topbar-links a.topbar-challenge {
  color: #05080c;
  background: linear-gradient(180deg, #f59e0b, #d97706);
  border: 1px solid #f59e0b;
  padding: 0.3rem 0.8rem;
  font-family: var(--disp); font-weight: 700; font-size: 0.7rem; letter-spacing: 0.14em;
  white-space: nowrap; transition: all 0.15s ease;
  box-shadow: 0 0 14px rgba(245, 158, 11, 0.3);
}
.topbar-links a.topbar-challenge:hover {
  color: #05080c; text-decoration: none;
  box-shadow: 0 0 22px rgba(245, 158, 11, 0.6);
  transform: translateY(-1px);
}

/* ---------------------------------------------------------- subset advisory */
.advisory {
  display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap;
  max-width: 1280px; margin: 1.4rem auto 0; padding: 0.75rem 1.1rem;
  border: 1px solid color-mix(in srgb, var(--thermal) 40%, transparent);
  border-left: 3px solid var(--thermal);
  background: rgba(255, 194, 61, 0.05);
  width: calc(100% - 4rem);
}
.adv-tag {
  font-family: var(--disp); font-weight: 700; font-size: 0.66rem; letter-spacing: 0.22em;
  color: var(--thermal); white-space: nowrap;
}
.advisory p { font-size: 0.72rem; letter-spacing: 0.06em; color: var(--dim); line-height: 1.7; margin: 0; flex: 1; min-width: 260px; }
.advisory strong { color: var(--text); font-weight: 500; }

/* ---------------------------------------------------------- hero */
.hero {
  display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 3rem; align-items: center;
  max-width: 1280px; margin: 0 auto; padding: 4.5rem 2rem 2.5rem;
}
.kicker { font-size: 0.72rem; letter-spacing: 0.26em; color: var(--depth); margin-bottom: 1.1rem; }
.hero h1 {
  font-family: var(--disp); font-weight: 700;
  font-size: clamp(2.6rem, 5.2vw, 4.3rem);
  line-height: 0.98; letter-spacing: 0.01em;
  text-transform: uppercase;
  margin-bottom: 1.4rem;
  text-shadow: 0 0 40px rgba(46, 230, 200, 0.18);
}
.hero h1 .hollow {
  color: transparent;
  -webkit-text-stroke: 1.5px var(--depth);
}
.hero-copy { color: var(--dim); max-width: 54ch; margin-bottom: 1.7rem; }
.hero-copy strong { color: var(--text); font-weight: 500; }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-bottom: 1.6rem; }
.cta {
  font-family: var(--disp); font-weight: 600; font-size: 0.8rem; letter-spacing: 0.12em;
  border: 1px solid var(--line2); color: var(--text);
  padding: 0.65rem 1.1rem; transition: all 0.18s ease;
  text-decoration: none !important; display: inline-block;
}
.cta:hover { border-color: var(--depth); color: var(--depth); box-shadow: 0 0 16px rgba(46,230,200,0.18); transform: translateY(-1px); }
.cta-primary { background: var(--depth); color: #051014; border-color: var(--depth); }
.cta-primary:hover { color: #051014; box-shadow: 0 0 26px rgba(46,230,200,0.45); }
.hero-foot { font-size: 0.7rem; letter-spacing: 0.1em; color: var(--faint); }

/* boot-in animation */
.boot { opacity: 0; transform: translateY(14px); animation: bootin 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) forwards; }
.boot-1 { animation-delay: 0.05s; } .boot-2 { animation-delay: 0.18s; }
.boot-3 { animation-delay: 0.34s; } .boot-4 { animation-delay: 0.5s; }
.boot-5 { animation-delay: 0.66s; }
@keyframes bootin { to { opacity: 1; transform: none; } }

/* ---------------------------------------------------------- HUD panel chrome */
.hud {
  position: relative;
  background: linear-gradient(180deg, var(--panel2), var(--panel));
  border: 1px solid var(--line);
}
.hud::before, .hud::after {
  content: ""; position: absolute; width: 14px; height: 14px; pointer-events: none; z-index: 3;
}
.hud::before { top: -1px; left: -1px; border-top: 2px solid var(--depth); border-left: 2px solid var(--depth); }
.hud::after { bottom: -1px; right: -1px; border-bottom: 2px solid var(--depth); border-right: 2px solid var(--depth); }
.hud-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.6rem 0.9rem; border-bottom: 1px solid var(--line);
}
.hud-title { font-family: var(--disp); font-weight: 600; font-size: 0.78rem; letter-spacing: 0.2em; color: var(--text); }
.hud-meta { font-size: 0.66rem; letter-spacing: 0.12em; color: var(--dim); display: flex; align-items: center; gap: 0.45rem; }
.rec-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--bad); box-shadow: 0 0 8px var(--bad); animation: pulse 1.1s infinite; display: inline-block; }

/* ---------------------------------------------------------- spectral sweep */
.sweep-stage {
  position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: #000;
  cursor: ew-resize; user-select: none; touch-action: none;
}
.sweep-layer { position: absolute; inset: 0; }
.sweep-layer video { width: 100%; height: 100%; object-fit: cover; display: block; filter: contrast(1.06) saturate(1.05); }
.sweep-layer[data-mod="ir"] { clip-path: inset(0 0 0 33.3%); }
.sweep-layer[data-mod="thermal"] { clip-path: inset(0 0 0 66.6%); }
.sweep-layer[data-mod="depth"] video { filter: contrast(1.1) hue-rotate(-8deg); }
.sweep-handle {
  position: absolute; top: 0; bottom: 0; width: 26px; margin-left: -13px; z-index: 4; cursor: ew-resize;
}
.sweep-handle span {
  position: absolute; top: 0; bottom: 0; left: 50%; width: 2px;
  background: var(--depth); box-shadow: 0 0 12px rgba(46,230,200,0.7);
}
.sweep-handle::after {
  content: "◂▸"; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
  font-size: 0.6rem; color: #051014; background: var(--depth); padding: 0.12rem 0.3rem;
  border-radius: 999px; letter-spacing: 0.05em;
}
.sweep-handle[data-handle="0"] { left: 33.3%; }
.sweep-handle[data-handle="1"] { left: 66.6%; }
.sweep-tag {
  position: absolute; top: 0.6rem; z-index: 3; font-size: 0.6rem; letter-spacing: 0.18em;
  padding: 0.16rem 0.5rem; color: #04090c; font-weight: 600;
}
.tag-depth { left: 0.6rem; background: var(--depth); }
.tag-ir { left: 36%; background: var(--ir); }
.tag-thermal { left: 69%; background: var(--thermal); }
.sweep-tc {
  position: absolute; right: 0.6rem; bottom: 0.6rem; z-index: 3;
  font-size: 0.72rem; letter-spacing: 0.14em; color: var(--depth);
  background: rgba(4, 10, 12, 0.72); padding: 0.18rem 0.5rem; border: 1px solid rgba(46,230,200,0.35);
}
.sweep-play {
  position: absolute; left: 0.6rem; bottom: 0.6rem; z-index: 4;
  background: rgba(4, 10, 12, 0.72); color: var(--depth); border: 1px solid rgba(46,230,200,0.35);
  font-family: var(--mono); font-size: 0.8rem; padding: 0.18rem 0.6rem; cursor: pointer;
}
.sweep-play:hover { background: var(--depth); color: #04090c; }
.sweep-offline {
  position: absolute; inset: 0; display: grid; place-items: center; z-index: 5;
  color: var(--dim); letter-spacing: 0.25em; font-size: 0.75rem; background: #02050866;
}
.sweep-hint { padding: 0.55rem 0.9rem; font-size: 0.64rem; letter-spacing: 0.2em; color: var(--faint); }

/* ---------------------------------------------------------- gauges */
.gauges {
  max-width: 1280px; margin: 0 auto; padding: 0 2rem 1rem;
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 1px;
  background: transparent;
}
.gauge {
  border: 1px solid var(--line); border-right-width: 0; padding: 1rem 1.1rem;
  background: linear-gradient(180deg, rgba(13,22,34,0.6), rgba(10,17,25,0.6));
}
.gauge:last-child { border-right-width: 1px; }
.gauge-num {
  display: block; font-family: var(--disp); font-weight: 700; font-size: 1.85rem;
  color: var(--depth); text-shadow: 0 0 18px rgba(46,230,200,0.35); line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.gauge-label { font-size: 0.6rem; letter-spacing: 0.18em; color: var(--dim); }

/* ---------------------------------------------------------- ticker */
.ticker {
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  overflow: hidden; margin: 1.4rem 0 0; background: rgba(7, 13, 19, 0.7);
}
.ticker-track {
  display: inline-flex; gap: 2.6rem; padding: 0.45rem 0; white-space: nowrap;
  font-size: 0.68rem; letter-spacing: 0.22em; color: var(--faint);
  animation: tick 80s linear infinite;
}
.ticker-track b { color: var(--dim); font-weight: 400; }
@keyframes tick { to { transform: translateX(-50%); } }

/* ---------------------------------------------------------- blocks */
.block { max-width: 1280px; margin: 0 auto; padding: 4.2rem 2rem 1rem; }
.block-head { margin-bottom: 1.8rem; max-width: 72ch; }
.block-head h2 {
  font-family: var(--disp); font-weight: 700; font-size: 1.7rem; letter-spacing: 0.06em;
  display: flex; align-items: center; gap: 0.8rem; flex-wrap: wrap; margin-bottom: 0.5rem;
}
.block-head .idx { color: var(--faint); font-weight: 400; font-size: 1.1rem; }
.block-head p { color: var(--dim); }
.block-head strong { color: var(--text); font-weight: 500; }
.bench-chip {
  font-size: 0.6rem; letter-spacing: 0.2em; color: var(--thermal);
  border: 1px solid color-mix(in srgb, var(--thermal) 45%, transparent);
  padding: 0.2rem 0.55rem; font-family: var(--mono); font-weight: 400;
}

/* ---------------------------------------------------------- modality rail */
.mod-rail { display: grid; grid-template-columns: repeat(7, 1fr); gap: 0.7rem; }
.mod-card {
  border: 1px solid var(--line); padding: 1rem 0.9rem 0.9rem; position: relative;
  background: linear-gradient(180deg, rgba(13,22,34,0.5), rgba(8,13,19,0.5));
  transition: transform 0.18s ease, border-color 0.18s ease;
  overflow: hidden;
}
.mod-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--mc); opacity: 0.85; box-shadow: 0 0 14px var(--mc);
}
.mod-card:hover { transform: translateY(-4px); border-color: var(--mc); }
.mod-card h3 { font-family: var(--disp); font-size: 0.85rem; letter-spacing: 0.14em; color: var(--mc); margin-bottom: 0.4rem; }
.mod-card p { font-size: 0.68rem; color: var(--dim); line-height: 1.5; min-height: 4.1em; }
.mod-status { font-size: 0.58rem; letter-spacing: 0.16em; color: var(--faint); }
.mod-card.on .mod-status { color: var(--ok); }

/* ---------------------------------------------------------- sequence lab */
.lab { display: grid; grid-template-columns: 220px 1fr; min-height: 480px; }
.lab-rail { border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.set-card {
  text-align: left; background: none; border: 0; border-bottom: 1px solid var(--line);
  padding: 0.85rem 0.95rem; cursor: pointer; color: var(--dim); font-family: var(--mono);
  transition: background 0.15s ease;
}
.set-card:hover { background: rgba(46, 230, 200, 0.05); }
.set-card.active { background: rgba(46, 230, 200, 0.09); color: var(--text); box-shadow: inset 3px 0 0 var(--depth); }
.set-card .sc-id { font-family: var(--disp); font-size: 0.8rem; letter-spacing: 0.12em; display: block; color: inherit; }
.set-card .sc-sub { font-size: 0.62rem; letter-spacing: 0.1em; color: var(--faint); }
.lab-main { display: flex; flex-direction: column; min-width: 0; }
.lab-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.7rem 0.95rem; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.pace-tabs { display: flex; gap: 0.4rem; }
.pace-tab {
  font-family: var(--disp); font-size: 0.68rem; letter-spacing: 0.16em; font-weight: 600;
  background: none; border: 1px solid var(--line2); color: var(--dim); padding: 0.32rem 0.8rem; cursor: pointer;
  transition: all 0.15s ease;
}
.pace-tab:hover { border-color: var(--depth); color: var(--depth); }
.pace-tab.active { background: var(--depth); border-color: var(--depth); color: #051014; box-shadow: 0 0 14px rgba(46,230,200,0.35); }
.lab-meta { font-size: 0.64rem; letter-spacing: 0.14em; color: var(--faint); }
.lab-stage { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); }
.lab-pane { position: relative; background: #000; }
.lab-pane video { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; display: block; }
.lab-pane figcaption {
  position: absolute; top: 0.5rem; left: 0.5rem; font-size: 0.56rem; letter-spacing: 0.18em;
  color: #04090c; background: var(--mc); padding: 0.12rem 0.45rem; font-weight: 600;
}
.lab-pane::after { content: ""; position: absolute; inset: 0; box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--mc) 28%, transparent); pointer-events: none; }
.lab-transport { display: flex; align-items: center; gap: 0.9rem; padding: 0.7rem 0.95rem; border-top: 1px solid var(--line); }
.t-btn {
  background: none; border: 1px solid var(--line2); color: var(--depth); font-family: var(--mono);
  padding: 0.3rem 0.8rem; cursor: pointer; font-size: 0.8rem; transition: all 0.15s ease; letter-spacing: 0.1em;
}
.t-btn:hover { background: var(--depth); color: #051014; border-color: var(--depth); }
.t-rail { flex: 1; height: 6px; background: var(--line); cursor: pointer; position: relative; }
.t-fill { position: absolute; inset: 0 auto 0 0; width: 0%; background: linear-gradient(90deg, var(--depth), var(--skel)); box-shadow: 0 0 10px rgba(46,230,200,0.5); }
.t-time { font-size: 0.68rem; color: var(--dim); letter-spacing: 0.08em; font-variant-numeric: tabular-nums; }
.lab-readout { padding: 1rem 0.95rem 1.1rem; display: grid; gap: 0.9rem; }
.readout-row { display: grid; grid-template-columns: 110px 1fr; gap: 0.9rem; align-items: start; }
.ro-key { font-size: 0.6rem; letter-spacing: 0.2em; color: var(--faint); padding-top: 0.25rem; }
.ro-caption { color: var(--text); font-size: 0.82rem; line-height: 1.7; min-height: 3.4em; }
.ro-caption .cursor { display: inline-block; width: 7px; height: 1em; background: var(--depth); vertical-align: -0.15em; animation: pulse 0.9s infinite; }
.chain { display: flex; flex-wrap: wrap; gap: 0.45rem; align-items: center; }
.chain-step {
  font-size: 0.66rem; letter-spacing: 0.1em; color: var(--depth);
  border: 1px solid color-mix(in srgb, var(--depth) 40%, transparent);
  padding: 0.22rem 0.55rem; background: rgba(46,230,200,0.06);
  opacity: 0; transform: translateX(-6px); animation: bootin 0.4s ease forwards;
}
.chain-sep { color: var(--faint); font-size: 0.7rem; }
.pace-chip { font-size: 0.66rem; padding: 0.22rem 0.6rem; letter-spacing: 0.14em; border: 1px solid; }

/* ---------------------------------------------------------- atlas */
.atlas-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.6rem; }
.atlas-cat {
  grid-column: 1 / -1; display: flex; align-items: baseline; gap: 0.8rem;
  margin: 1.1rem 0 0.15rem; padding-bottom: 0.3rem; border-bottom: 1px solid var(--line);
}
.atlas-cat:first-child { margin-top: 0; }
.atlas-cat h3 { font-family: var(--disp); font-weight: 600; font-size: 0.82rem; letter-spacing: 0.2em; color: var(--depth); text-transform: uppercase; }
.atlas-cat span { font-size: 0.6rem; letter-spacing: 0.14em; color: var(--faint); }
.tile {
  position: relative; border: 1px solid var(--line); background: #000; cursor: pointer;
  aspect-ratio: 4 / 3.4; overflow: hidden; padding: 0; text-align: left;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.tile:hover { border-color: var(--depth); transform: translateY(-3px); z-index: 2; }
.tile .tile-view {
  position: absolute; inset: 0 0 26% 0; background-size: auto 100%; background-repeat: no-repeat;
  background-position: 0 0; filter: brightness(1.05);
}
.tile:hover .tile-view { filter: brightness(1.25); }
.tile .tile-label {
  position: absolute; left: 0; right: 0; bottom: 0; height: 26%;
  display: flex; flex-direction: column; justify-content: center; padding: 0 0.55rem;
  background: linear-gradient(180deg, rgba(8,14,20,0.92), rgba(6,10,15,0.96));
  border-top: 1px solid var(--line);
}
.tile .tl-name { font-family: var(--disp); font-weight: 600; font-size: 0.66rem; letter-spacing: 0.1em; color: var(--text); text-transform: uppercase; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tile .tl-meta { font-size: 0.56rem; color: var(--faint); letter-spacing: 0.12em; }
.tile .tl-id {
  position: absolute; top: 0.4rem; left: 0.45rem; font-size: 0.6rem; color: var(--depth);
  background: rgba(4,10,12,0.7); border: 1px solid rgba(46,230,200,0.3); padding: 0 0.3rem; letter-spacing: 0.1em;
}
.tile .tile-scan {
  position: absolute; inset: 0 0 26% 0; pointer-events: none; opacity: 0; transition: opacity 0.15s ease;
  background: linear-gradient(90deg, transparent 0%, rgba(46,230,200,0.13) 50%, transparent 100%);
}
.tile:hover .tile-scan { opacity: 1; }

/* dual tiles: detailed infrared fills the frame, depth rides as a corner inset */
.tile.dual .tile-view.is-ir { filter: brightness(1.06) saturate(1.04); }
.tile.dual:hover .tile-view.is-ir { filter: brightness(1.2) saturate(1.08); }
.tile-view.pip {
  inset: auto auto calc(26% + 0.34rem) 0.34rem;   /* bottom-left of the view area */
  width: 38%; aspect-ratio: 4 / 3; z-index: 2;
  border: 1px solid rgba(46, 230, 200, 0.55);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(4, 9, 12, 0.6);
  filter: brightness(1.12) contrast(1.05) sepia(0.4) saturate(2.4) hue-rotate(128deg);
}
.tile.dual:hover .tile-view.pip {
  border-color: var(--depth);
  box-shadow: 0 0 12px rgba(46, 230, 200, 0.4), 0 2px 8px rgba(0, 0, 0, 0.55);
}
.tile .tile-mod {
  position: absolute; font-size: 0.5rem; letter-spacing: 0.12em; z-index: 3;
  font-weight: 600; padding: 0.05rem 0.3rem; color: #04090c; pointer-events: none;
  opacity: 0; transform: translateY(-3px); transition: all 0.16s ease;
}
.tile .m-ir { top: 0.4rem; right: 0.4rem; background: var(--ir); }
.tile:hover .tile-mod { opacity: 0.95; transform: none; }

/* ---------------------------------------------------------- inspector modal */
.inspector {
  position: fixed; inset: 0; z-index: 70; display: grid; place-items: center;
  background: rgba(2, 4, 7, 0.82); backdrop-filter: blur(6px); padding: 1.5rem;
}
.inspector[hidden], .matrix-tip[hidden], .sweep-offline[hidden] { display: none; }
.inspector-card { width: min(860px, 100%); animation: bootin 0.25s ease; }
.insp-close { background: none; border: 1px solid var(--line2); color: var(--dim); cursor: pointer; font-family: var(--mono); padding: 0.15rem 0.55rem; }
.insp-close:hover { color: var(--bad); border-color: var(--bad); }
.insp-stage { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); }
.insp-meta { padding: 0.9rem; display: flex; flex-wrap: wrap; gap: 0.5rem 1.6rem; font-size: 0.7rem; color: var(--dim); letter-spacing: 0.1em; }
.insp-meta b { color: var(--depth); font-weight: 500; }

/* ---------------------------------------------------------- quiz */
.quiz { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); }
.quiz-stage { position: relative; background: #000; min-height: 320px; }
.quiz-stage video { width: 100%; height: 100%; object-fit: cover; display: block; position: absolute; inset: 0; }
.quiz-scan {
  position: absolute; inset: 0; pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(46,230,200,0.03) 0 2px, transparent 2px 5px);
}
.quiz-panel { padding: 1.3rem 1.4rem; border-left: 1px solid var(--line); display: flex; flex-direction: column; gap: 0.9rem; }
.quiz-progress { font-size: 0.62rem; letter-spacing: 0.24em; color: var(--faint); }
.quiz-q { font-size: 0.86rem; color: var(--text); line-height: 1.8; }
.quiz-q span { color: var(--thermal); }
.quiz-options { display: grid; gap: 0.5rem; }
.quiz-opt {
  text-align: left; font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.04em;
  background: rgba(13, 22, 34, 0.6); border: 1px solid var(--line2); color: var(--text);
  padding: 0.6rem 0.85rem; cursor: pointer; transition: all 0.14s ease;
}
.quiz-opt:hover:not(:disabled) { border-color: var(--depth); color: var(--depth); transform: translateX(3px); }
.quiz-opt:disabled { cursor: default; opacity: 0.75; }
.quiz-opt.correct { border-color: var(--ok); color: var(--ok); background: rgba(121,240,142,0.08); }
.quiz-opt.wrong { border-color: var(--bad); color: var(--bad); background: rgba(255,93,93,0.07); }
.quiz-verdict { font-size: 0.74rem; min-height: 1.6em; letter-spacing: 0.06em; color: var(--dim); }
.quiz-verdict.good { color: var(--ok); } .quiz-verdict.nope { color: var(--bad); }
.quiz-foot { margin-top: auto; display: flex; align-items: center; gap: 1rem; font-size: 0.68rem; color: var(--dim); letter-spacing: 0.1em; flex-wrap: wrap; }
.quiz-ref { color: var(--faint); font-size: 0.6rem; }
#quiz-next { margin-left: auto; }

/* ---------------------------------------------------------- instruments */
.instr-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; }
.instr { padding-bottom: 0.9rem; }
.instr.span2 { grid-column: span 2; }
.instr canvas { display: block; width: 100%; padding: 0.7rem 0.9rem 0; }
.matrix-tip {
  position: fixed; z-index: 80; pointer-events: none; background: var(--panel2); border: 1px solid var(--depth);
  font-size: 0.66rem; letter-spacing: 0.08em; padding: 0.3rem 0.55rem; color: var(--text);
}
.dur-charts { display: grid; gap: 1rem; padding: 0.9rem 0.9rem 0; }
.bar-row { display: grid; grid-template-columns: 84px 1fr 44px; gap: 0.6rem; align-items: center; margin-bottom: 0.34rem; }
.bar-row .br-label { font-size: 0.62rem; color: var(--dim); letter-spacing: 0.08em; text-align: right; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar-row .br-track { height: 10px; background: rgba(22, 34, 47, 0.7); position: relative; overflow: hidden; }
.bar-row .br-fill { position: absolute; inset: 0 auto 0 0; width: 0; background: var(--bc, var(--depth)); box-shadow: 0 0 9px color-mix(in srgb, var(--bc, var(--depth)) 60%, transparent); transition: width 0.9s cubic-bezier(0.2, 0.7, 0.2, 1); }
.bar-row .br-val { font-size: 0.62rem; color: var(--text); font-variant-numeric: tabular-nums; }
.chart-title { font-size: 0.6rem; letter-spacing: 0.2em; color: var(--faint); margin-bottom: 0.45rem; }
.pace-bars, .chainlen-bars, .top-chain, .inventory, .bench-bars { padding: 0.9rem 0.9rem 0; }
.bench-table { width: calc(100% - 1.8rem); margin: 0.9rem; border-collapse: collapse; font-size: 0.72rem; }
.bench-table th { text-align: left; font-weight: 500; color: var(--faint); font-size: 0.6rem; letter-spacing: 0.14em; padding: 0.4rem 0.5rem; border-bottom: 1px solid var(--line2); }
.bench-table td { padding: 0.45rem 0.5rem; border-bottom: 1px solid var(--line); color: var(--dim); font-variant-numeric: tabular-nums; }
.bench-table td:first-child { color: var(--text); }
.bench-table td.hi { color: var(--depth); }
.bench-note { padding: 0 0.9rem; font-size: 0.66rem; color: var(--faint); }
.bench-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.9rem; }

/* ---------------------------------------------------------- access */
.access-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 0.9rem; }
.tree { padding: 0.9rem; font-size: 0.74rem; line-height: 1.8; color: var(--text); overflow-x: auto; }
.tree .tc { color: var(--faint); }
.access-grid .cta { margin: 0 0.9rem 0.9rem; }
.access-note { padding: 0 0.9rem 0.9rem; font-size: 0.68rem; color: var(--dim); }
.bibtex { padding: 0.9rem; font-size: 0.7rem; line-height: 1.7; color: var(--dim); overflow-x: auto; }
.copy-btn { background: none; border: 1px solid var(--line2); color: var(--depth); font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.14em; padding: 0.18rem 0.6rem; cursor: pointer; }
.copy-btn:hover { background: var(--depth); color: #051014; }
.mono { font-family: var(--mono); color: var(--text); }

/* ---------------------------------------------------------- page tabs */
.topbar-tabs {
  display: flex; gap: 0.25rem; margin-left: 0.6rem;
  overflow-x: auto; scrollbar-width: none;
}
.topbar-tabs::-webkit-scrollbar { display: none; }
.topbar-tabs a {
  font-family: var(--disp); font-weight: 600; font-size: 0.68rem; letter-spacing: 0.16em;
  color: var(--dim); padding: 0.34rem 0.75rem; border: 1px solid transparent;
  white-space: nowrap; text-decoration: none !important; transition: all 0.15s ease;
}
.topbar-tabs a:hover { color: var(--depth); }
.topbar-tabs a.active {
  color: var(--depth); background: rgba(46, 230, 200, 0.07);
  border-color: rgba(46, 230, 200, 0.4);
}

/* ---------------------------------------------------------- station directory */
.stations { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0.9rem; }
.station-card {
  position: relative; display: flex; flex-direction: column; justify-content: flex-end;
  min-height: 250px; padding: 1.15rem 1.2rem; overflow: hidden;
  border: 1px solid var(--line); background: #000; text-decoration: none !important;
  transition: transform 0.18s ease, border-color 0.18s ease;
}
.station-thumb {
  position: absolute; inset: 0; background-size: cover; background-position: center;
  opacity: 0.4; transition: opacity 0.3s ease, transform 0.5s ease;
}
.station-card::before {
  content: ""; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, rgba(4, 7, 11, 0.15) 20%, rgba(4, 7, 11, 0.92) 78%);
}
.station-card > :not(.station-thumb) { position: relative; z-index: 2; }
.station-card:hover { transform: translateY(-5px); border-color: var(--sc, var(--depth)); }
.station-card:hover .station-thumb { opacity: 0.68; transform: scale(1.05); }
.st-idx { font-size: 0.62rem; letter-spacing: 0.26em; color: var(--sc, var(--depth)); margin-bottom: 0.35rem; }
.st-name {
  font-family: var(--disp); font-weight: 700; font-size: 1.45rem; letter-spacing: 0.05em;
  color: var(--text); line-height: 1.05; margin-bottom: 0.45rem; text-transform: uppercase;
}
.st-desc { font-size: 0.72rem; color: var(--dim); line-height: 1.55; margin-bottom: 0.65rem; }
.st-stat {
  font-size: 0.6rem; letter-spacing: 0.14em; color: var(--sc, var(--depth));
  border-top: 1px solid var(--line); padding-top: 0.55rem;
  display: flex; justify-content: space-between; gap: 0.8rem; align-items: baseline;
}
.st-enter { color: var(--text); opacity: 0; transform: translateX(-4px); transition: all 0.2s ease; white-space: nowrap; }
.station-card:hover .st-enter { opacity: 1; transform: none; }

/* ---------------------------------------------------------- prev / next */
.pn-row {
  max-width: 1280px; margin: 3.4rem auto 0; padding: 0 2rem;
  display: flex; justify-content: space-between; gap: 1rem;
}
.pn-row a {
  font-family: var(--disp); font-weight: 600; font-size: 0.74rem; letter-spacing: 0.16em;
  color: var(--dim); border: 1px solid var(--line2); padding: 0.6rem 1.1rem;
  text-decoration: none !important; transition: all 0.15s ease;
}
.pn-row a:hover { color: var(--depth); border-color: var(--depth); box-shadow: 0 0 14px rgba(46, 230, 200, 0.15); }

/* ---------------------------------------------------------- footer */
.footer {
  margin-top: 4rem; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap;
  padding: 1.2rem 2rem 2.2rem; max-width: 1280px; margin-left: auto; margin-right: auto;
  font-size: 0.62rem; letter-spacing: 0.16em; color: var(--faint);
}
.footer a { color: var(--dim); }

/* ---------------------------------------------------------- reveal on scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1); }
.reveal.in { opacity: 1; transform: none; }

/* ---------------------------------------------------------- responsive */
@media (max-width: 1080px) {
  .mod-rail { grid-template-columns: repeat(4, 1fr); }
  .mod-card p { min-height: 0; }
  .gauges { grid-template-columns: repeat(3, 1fr); }
  .gauge { border-right-width: 1px; }
  .instr-grid, .bench-grid, .access-grid { grid-template-columns: 1fr; }
  .instr.span2 { grid-column: span 1; }
}
@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; padding-top: 3rem; }
  .lab { grid-template-columns: 1fr; }
  .lab-rail { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .set-card { border-bottom: 0; border-right: 1px solid var(--line); min-width: 150px; }
  .quiz { grid-template-columns: 1fr; }
  .quiz-panel { border-left: 0; border-top: 1px solid var(--line); }
  .topbar { flex-wrap: wrap; gap: 0.6rem; }
  .topbar-links { margin-left: 0; flex-wrap: wrap; gap: 0.9rem; }
  .topbar-tabs { order: 3; width: 100%; margin-left: 0; }
  .stations { grid-template-columns: 1fr; }
  .station-card { min-height: 190px; }
  .lab-stage { grid-template-columns: 1fr; }
  .lab-pane video { aspect-ratio: 16 / 10; }
  .insp-stage { grid-template-columns: 1fr; }
  .readout-row { grid-template-columns: 1fr; gap: 0.3rem; }
  .mod-rail { grid-template-columns: repeat(2, 1fr); }
  .gauges { grid-template-columns: repeat(2, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .ticker-track { animation: none; }
}