/* Signal State uses the colors and line language of its puzzle boards.
   The shared studio header and footer keep their original warm treatment. */
:root {
  --signal-bg: #070d1f;
  --signal-field: #061923;
  --signal-panel: #142b43;
  --signal-panel-raised: #1a3652;
  --signal-cyan: #16c9e4;
  --signal-cyan-pale: #8cecf5;
  --signal-amber: #f1c44e;
  --signal-coral: #ff6b68;
  --signal-text: #d8e4ea;
  --signal-muted: #8ba5b5;
  --signal-edge: #274056;
}

.signal-site main {
  overflow: hidden;
  background: var(--signal-bg);
  color: var(--signal-text);
}
.signal-site main h1,
.signal-site main h2,
.signal-site main h3 {
  color: #f1f6f8;
}
.signal-site main :focus-visible {
  outline: 3px solid var(--signal-amber);
  outline-offset: 4px;
}
.signal-wrap {
  width: min(1160px, calc(100% - 2.5rem));
  margin-inline: auto;
}
.signal-site .signal-eyebrow {
  display: flex;
  align-items: center;
  gap: .7rem;
  margin: 0 0 1.3rem;
  color: var(--signal-cyan);
  font-size: .7rem;
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.signal-eyebrow-line {
  width: 28px;
  height: 1px;
  background: currentColor;
}
.signal-live-dot,
.signal-gallery-metadata i {
  display: inline-block;
  width: 8px;
  height: 8px;
  flex: none;
  border-radius: 50%;
  background: var(--signal-cyan);
  box-shadow: 0 0 13px rgba(22,201,228,.7);
}
.signal-back {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin-bottom: 3rem;
  color: var(--signal-muted);
  font-size: .82rem;
  font-weight: 700;
  text-decoration: none;
}
.signal-back:hover { color: var(--signal-cyan); }
.signal-back span { color: var(--signal-cyan); font-size: 1.05rem; }

/* Game overview */
.signal-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background-color: var(--signal-bg);
  background-image:
    linear-gradient(rgba(53,108,132,.075) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53,108,132,.075) 1px, transparent 1px),
    radial-gradient(ellipse at 76% 42%, rgba(22,201,228,.1), transparent 36rem);
  background-size: 54px 54px, 54px 54px, auto;
}
.signal-hero::after {
  position: absolute;
  z-index: -1;
  right: -11rem;
  bottom: -15rem;
  width: 39rem;
  height: 39rem;
  border: 1px solid rgba(22,201,228,.13);
  border-radius: 50%;
  box-shadow: 0 0 0 42px rgba(22,201,228,.025), 0 0 0 84px rgba(22,201,228,.02);
  content: "";
}
.signal-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr .92fr;
  gap: clamp(2rem, 5vw, 5.5rem);
  align-items: center;
  min-height: 690px;
  padding-block: clamp(3rem, 6vw, 5.5rem) 3rem;
}
.signal-hero-copy { position: relative; z-index: 2; max-width: 620px; }
.signal-hero-copy .signal-eyebrow { margin-bottom: 1.4rem; }
.signal-hero h1 {
  margin: 0 0 1.2rem;
  font-size: clamp(4rem, 8vw, 7.2rem);
  font-weight: 600;
  letter-spacing: -.065em;
  line-height: .94;
}
.signal-hero h1 span,
.signal-gallery-hero h1 span { color: var(--signal-cyan); }
.signal-lead {
  max-width: 510px;
  margin-bottom: 1.1rem;
  color: #f1c44e;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.4vw, 2rem);
  font-weight: 500;
  line-height: 1.25;
}
.signal-summary {
  max-width: 500px;
  color: var(--signal-muted);
  font-size: 1rem;
  line-height: 1.8;
}
.signal-hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.7rem; margin-top: 2rem; }
.signal-button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  gap: 1.1rem;
  padding: .8rem 1.2rem;
  border: 1px solid var(--signal-cyan);
  border-radius: 4px;
  color: var(--signal-bg);
  background: var(--signal-cyan);
  box-shadow: 0 0 24px rgba(22,201,228,.14);
  font-size: .84rem;
  font-weight: 700;
  text-decoration: none;
  transition: color .18s ease, background-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.signal-button:hover { color: var(--signal-bg); background: #71e3ef; box-shadow: 0 0 28px rgba(22,201,228,.3); transform: translateY(-2px); }
.signal-button span { font-size: 1.2rem; line-height: 1; }
.signal-text-link { color: var(--signal-cyan-pale); font-size: .84rem; font-weight: 700; text-decoration-color: rgba(140,236,245,.45); text-underline-offset: .25em; }
.signal-text-link:hover { color: white; }
.signal-hero-footnote { display: flex; align-items: center; gap: .8rem; margin: 2.3rem 0 0; color: var(--signal-muted); font-size: .72rem; letter-spacing: .04em; }
.signal-hero-footnote span { display: grid; width: 28px; height: 28px; place-items: center; border: 1px solid var(--signal-edge); border-radius: 50%; color: var(--signal-cyan); font-size: .65rem; font-weight: 700; }
.signal-hero-art { position: relative; display: grid; min-height: 575px; place-items: center; }
.signal-hero-graph { position: absolute; inset: 1% -8% 0 0; width: 110%; height: 100%; overflow: visible; fill: var(--signal-bg); stroke: rgba(49,112,139,.42); stroke-width: 2; }
.signal-hero-graph circle { stroke: rgba(22,201,228,.65); stroke-width: 2; filter: drop-shadow(0 0 5px rgba(22,201,228,.35)); }
.signal-hero-graph .signal-hero-node-hot { fill: #112a3b; stroke: var(--signal-cyan); stroke-width: 3; }
.signal-hero-graph .signal-hero-route { fill: none; stroke: var(--signal-cyan); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; filter: drop-shadow(0 0 7px rgba(22,201,228,.65)); }
.signal-device {
  position: relative;
  z-index: 1;
  width: clamp(225px, 24vw, 285px);
  margin: 0;
  padding: 9px;
  border: 1px solid rgba(172,206,218,.42);
  border-radius: 32px;
  background: #030912;
  box-shadow: 0 24px 60px rgba(0,0,0,.55), 0 0 0 4px rgba(22,201,228,.08), 0 0 50px rgba(22,201,228,.12);
  transform: rotate(-4deg);
}
.signal-device::before { position: absolute; z-index: 2; top: 8px; left: 50%; width: 28%; height: 15px; border-radius: 0 0 12px 12px; background: #030912; content: ""; transform: translateX(-50%); }
.signal-device-screen { overflow: hidden; border-radius: 23px; background: var(--signal-field); }
.signal-device-screen img { width: 100%; height: auto; }
.signal-art-label { position: absolute; z-index: 2; right: -2%; top: 15%; display: flex; align-items: center; gap: .6rem; padding: .65rem .85rem; border: 1px solid rgba(22,201,228,.38); background: rgba(7,13,31,.95); color: var(--signal-text); font-size: .72rem; font-weight: 700; transform: rotate(5deg); }
.signal-art-label-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--signal-amber); box-shadow: 0 0 10px rgba(241,196,78,.65); }
.signal-art-index { position: absolute; z-index: 2; bottom: 8%; left: 0; display: grid; width: 76px; height: 76px; align-content: center; justify-items: center; border: 1px solid var(--signal-amber); border-radius: 50%; background: var(--signal-bg); color: var(--signal-amber); font-size: .52rem; font-weight: 700; line-height: 1.2; letter-spacing: .12em; transform: rotate(-9deg); }
.signal-art-index strong { font-family: var(--font-display); font-size: 1.7rem; font-weight: 500; letter-spacing: 0; }
.signal-hero-bottom { display: flex; align-items: center; justify-content: center; gap: 1rem; padding: 1.1rem; border-top: 1px solid rgba(95,145,165,.18); color: var(--signal-muted); font-size: .58rem; font-weight: 700; letter-spacing: .2em; }
.signal-hero-bottom i { width: 36px; height: 1px; background: var(--signal-edge); }

/* Node-and-arrow navigation */
.signal-route-section { padding-block: clamp(5rem, 9vw, 8rem); border-block: 1px solid rgba(67,111,132,.23); background: #091224; }
.signal-route-layout { display: grid; grid-template-columns: .76fr 1.24fr; align-items: start; gap: clamp(2.5rem, 7vw, 7rem); }
.signal-section-intro { max-width: 520px; }
.signal-section-intro h2 { margin: 0 0 1rem; font-size: clamp(2.6rem, 4.5vw, 4.3rem); font-weight: 600; letter-spacing: -.045em; line-height: 1.02; }
.signal-section-intro > p:last-child { max-width: 430px; margin: 0; color: var(--signal-muted); font-size: .95rem; line-height: 1.75; }
.signal-route { position: relative; padding-block: .2rem; }
.signal-route-lines { position: absolute; z-index: 0; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.signal-route-edge-base,
.signal-route-edge-active { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.signal-route-edge-base { stroke: #2a3d50; stroke-width: 2; }
.signal-route-edge-active { stroke: var(--signal-cyan); stroke-width: 3; filter: drop-shadow(0 0 4px rgba(22,201,228,.55)); transition: stroke-dashoffset .95s cubic-bezier(.18,.72,.22,1); }
.signal-motion-ready .signal-route-edge-active { stroke-dashoffset: var(--edge-length); }
.signal-motion-ready .signal-route-edge-active.is-drawn { stroke-dashoffset: 0; }
.signal-route-list { position: relative; z-index: 1; display: grid; gap: 1.25rem; margin: 0; padding: 0; list-style: none; }
.signal-route-node { display: grid; grid-template-columns: 70px minmax(0,1fr); gap: 1rem; align-items: center; min-height: 124px; }
.signal-route-marker { position: relative; z-index: 1; display: grid; width: 62px; height: 62px; place-items: center; border: 1px solid var(--signal-cyan); border-radius: 50%; outline: 4px solid #091224; background: #0b1b2d; box-shadow: inset 0 0 0 5px #091224, inset 0 0 0 6px rgba(22,201,228,.65), 0 0 20px rgba(22,201,228,.13); color: var(--signal-cyan-pale); font-family: var(--font-display); font-size: 1.55rem; font-weight: 600; }
.signal-route-marker-amber { border-color: var(--signal-amber); color: var(--signal-amber); box-shadow: inset 0 0 0 5px #091224, inset 0 0 0 6px rgba(241,196,78,.6), 0 0 20px rgba(241,196,78,.1); }
.signal-route-marker-coral { border-color: var(--signal-coral); color: var(--signal-coral); box-shadow: inset 0 0 0 5px #091224, inset 0 0 0 6px rgba(255,107,104,.55), 0 0 20px rgba(255,107,104,.09); }
.signal-route-card { position: relative; display: grid; gap: .35rem; min-height: 106px; align-content: center; padding: 1rem 3.2rem 1rem 1.2rem; border: 1px solid #263e53; border-radius: 3px; background: linear-gradient(110deg, rgba(20,43,67,.88), rgba(13,28,48,.95)); color: var(--signal-text); text-decoration: none; transition: border-color .2s ease, background-color .2s ease, transform .2s ease; }
.signal-route-card::before { position: absolute; top: -1px; left: -1px; width: 13px; height: 13px; border-top: 2px solid var(--signal-cyan); border-left: 2px solid var(--signal-cyan); content: ""; }
.signal-route-card:hover { border-color: var(--signal-cyan); background-color: #172f49; color: white; transform: translateX(4px); }
.signal-route-kicker { color: var(--signal-cyan); font-size: .57rem; font-weight: 700; letter-spacing: .15em; }
.signal-route-node:nth-child(2) .signal-route-kicker { color: var(--signal-amber); }
.signal-route-node:nth-child(3) .signal-route-kicker { color: var(--signal-coral); }
.signal-route-card strong { color: #f1f6f8; font-family: var(--font-display); font-size: 1.35rem; font-weight: 500; line-height: 1.15; }
.signal-route-card > span:nth-of-type(2) { color: var(--signal-muted); font-size: .76rem; line-height: 1.45; }
.signal-route-arrow { position: absolute; right: 1.1rem; top: 50%; color: var(--signal-cyan); font-size: 1.25rem; transform: translateY(-50%); }
.signal-route-caption { display: flex; align-items: flex-start; gap: .55rem; margin: 1.1rem 0 0 86px; color: #718b9e; font-size: .68rem; line-height: 1.5; }
.signal-route-caption span { color: var(--signal-cyan); font-size: .55rem; }

/* Quick facts */
.signal-facts-section { padding-block: clamp(5rem, 9vw, 8.5rem); background: var(--signal-field); }
.signal-facts-intro { max-width: 700px; margin-bottom: 3rem; }
.signal-facts-intro h2 { margin-bottom: 1rem; }
.signal-fact-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: .9rem; }
.signal-fact-card { position: relative; min-height: 280px; overflow: hidden; padding: 1.3rem; border: 1px solid #1e5868; background: linear-gradient(150deg, #123044, #0b2030 65%); }
.signal-fact-card::after { position: absolute; right: -2.4rem; bottom: -3rem; width: 9rem; height: 9rem; border: 1px solid rgba(22,201,228,.2); border-radius: 50%; box-shadow: 0 0 0 12px rgba(22,201,228,.035), 0 0 0 24px rgba(22,201,228,.025); content: ""; }
.signal-fact-card-amber { border-color: #635632; background: linear-gradient(150deg, #302e2c, #171e2c 68%); }
.signal-fact-card-amber::after { border-color: rgba(241,196,78,.25); box-shadow: 0 0 0 12px rgba(241,196,78,.035), 0 0 0 24px rgba(241,196,78,.025); }
.signal-fact-card-coral { border-color: #5b3944; background: linear-gradient(150deg, #322839, #171e2c 68%); }
.signal-fact-card-coral::after { border-color: rgba(255,107,104,.23); box-shadow: 0 0 0 12px rgba(255,107,104,.035), 0 0 0 24px rgba(255,107,104,.025); }
.signal-fact-card-muted { border-color: #2d4555; background: linear-gradient(150deg, #1c3341, #101d2e 68%); }
.signal-fact-card-muted::after { border-color: rgba(139,165,181,.22); }
.signal-fact-id { position: relative; z-index: 1; color: var(--signal-cyan); font-size: .57rem; font-weight: 700; letter-spacing: .15em; }
.signal-fact-card-amber .signal-fact-id, .signal-fact-card-amber .signal-fact-node { color: var(--signal-amber); }
.signal-fact-card-coral .signal-fact-id, .signal-fact-card-coral .signal-fact-node { color: var(--signal-coral); }
.signal-fact-card-muted .signal-fact-id, .signal-fact-card-muted .signal-fact-node { color: var(--signal-muted); }
.signal-fact-node { display: grid; width: 77px; height: 77px; margin-block: 1.45rem 1.1rem; place-items: center; border: 1px solid var(--signal-cyan); border-radius: 50%; box-shadow: inset 0 0 0 6px rgba(22,201,228,.08), 0 0 22px rgba(22,201,228,.1); color: var(--signal-cyan-pale); font-family: var(--font-display); font-size: 1.35rem; }
.signal-fact-card h3 { position: relative; z-index: 1; margin: 0 0 .5rem; font-size: 1.3rem; }
.signal-fact-card p { position: relative; z-index: 1; max-width: 240px; margin: 0; color: var(--signal-muted); font-size: .78rem; line-height: 1.6; }
.signal-music-note { display: flex; align-items: center; gap: 1rem; margin-top: 1rem; padding: 1rem 1.2rem; border: 1px solid #23394a; background: rgba(11,25,43,.55); }
.signal-music-wave { display: grid; width: 36px; height: 36px; flex: none; place-items: center; border: 1px solid var(--signal-amber); border-radius: 50%; color: var(--signal-amber); font-size: 1.2rem; }
.signal-music-note p { margin: 0; color: var(--signal-text); font-size: .83rem; }
.signal-music-note strong { color: var(--signal-amber); }
.signal-music-note p span { color: var(--signal-muted); }

/* Fictional intern switch */
.signal-intern-section { padding-block: clamp(4rem, 8vw, 7rem); border-block: 1px solid rgba(67,111,132,.23); background: #091224; }
.signal-intern-wrap { display: grid; grid-template-columns: .85fr 1.15fr; gap: clamp(2rem, 7vw, 7rem); align-items: center; }
.signal-intern-wrap h2 { margin: 0 0 1rem; font-size: clamp(2.5rem, 4.3vw, 4.1rem); font-weight: 600; letter-spacing: -.045em; line-height: 1.02; }
.signal-intern-wrap > div:first-child > p:last-child { max-width: 420px; margin: 0; color: var(--signal-muted); font-size: .9rem; line-height: 1.75; }
.signal-intern-panel { position: relative; isolation: isolate; overflow: hidden; padding: clamp(1.35rem, 3.5vw, 2.6rem); border: 1px solid #445469; background: linear-gradient(140deg, #192b43, #0e1b30); box-shadow: 0 18px 45px rgba(0,0,0,.23); }
.signal-intern-panel::before { position: absolute; z-index: -1; inset: 0; background: radial-gradient(circle at 74% 46%, rgba(241,196,78,.22), transparent 46%); opacity: 0; pointer-events: none; content: ""; }
.signal-intern-panel.is-zapping::before { animation: signal-zap-flash .7s ease-out both; }
.signal-intern-stamp { display: inline-flex; align-items: center; gap: .55rem; color: var(--signal-amber); font-size: .59rem; font-weight: 700; letter-spacing: .14em; }
.signal-intern-stamp .signal-live-dot { width: 6px; height: 6px; background: var(--signal-amber); box-shadow: 0 0 10px rgba(241,196,78,.65); }
.signal-intern-note { margin: 1.5rem 0 1.2rem; color: var(--signal-muted); font-size: .78rem; }
.signal-zap-button { position: relative; z-index: 1; display: flex; width: 100%; align-items: center; gap: 1rem; padding: 1rem 1.1rem; border: 1px solid var(--signal-amber); border-radius: 3px; background: rgba(7,13,31,.65); color: #fff3cb; text-align: left; font-size: .88rem; font-weight: 700; line-height: 1.5; cursor: pointer; transition: background-color .2s ease, border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
.signal-zap-button:hover { border-color: #ffe68e; background: #342e28; box-shadow: 0 0 22px rgba(241,196,78,.14); transform: translateY(-2px); }
.signal-zap-button:active { transform: translateY(1px); }
.signal-zap-bolt { flex: none; color: var(--signal-amber); font-size: 1.6rem; line-height: 1; }
.signal-zap-status { min-height: 1.4em; margin: 1rem 0 0; color: var(--signal-muted); font-size: .72rem; line-height: 1.5; }
.signal-zap-status.is-updated { color: var(--signal-amber); }
.signal-zap-effect { position: absolute; z-index: 2; top: 46%; right: 8%; color: #ffe68e; font-size: 4rem; line-height: 1; opacity: 0; pointer-events: none; text-shadow: 0 0 8px #ffc842, 0 0 24px rgba(255,200,66,.8); transform: scale(.3) rotate(-20deg); }
.signal-intern-panel.is-zapping .signal-zap-effect { animation: signal-zap-bolt .78s cubic-bezier(.2,.72,.22,1) both; }
@keyframes signal-zap-bolt {
  0% { opacity: 0; transform: scale(.3) rotate(-20deg) translateY(16px); }
  20% { opacity: 1; transform: scale(1.3) rotate(8deg) translateY(-4px); }
  38% { opacity: .9; transform: scale(.86) rotate(-5deg) translateY(2px); }
  60% { opacity: 1; transform: scale(1.08) rotate(4deg) translateY(-3px); }
  100% { opacity: 0; transform: scale(.7) rotate(13deg) translateY(-20px); }
}
@keyframes signal-zap-flash {
  0% { opacity: 0; }
  18% { opacity: .8; }
  100% { opacity: 0; }
}

/* Quiet exits */
.signal-outbound-section { padding-block: 1.2rem; background: #070d1f; }
.signal-outbound-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .75rem; }
.signal-outbound-grid a { display: grid; gap: .35rem; min-height: 110px; align-content: center; padding: 1rem; border: 1px solid #1f354a; background: #0b1729; color: var(--signal-text); text-decoration: none; transition: border-color .2s ease, background-color .2s ease; }
.signal-outbound-grid a:hover { border-color: var(--signal-cyan); background: #11253a; }
.signal-outbound-code { color: var(--signal-cyan); font-size: .52rem; font-weight: 700; letter-spacing: .13em; }
.signal-outbound-grid a strong { color: #f1f6f8; font-family: var(--font-display); font-size: 1rem; font-weight: 500; }
.signal-outbound-grid a > span:last-child { display: flex; justify-content: space-between; color: var(--signal-muted); font-size: .68rem; }
.signal-outbound-grid i { color: var(--signal-cyan); font-size: 1rem; font-style: normal; }

/* Separate screenshot index */
.signal-gallery-hero {
  padding-block: clamp(3rem, 6vw, 5.6rem) 2.5rem;
  background-color: var(--signal-bg);
  background-image:
    linear-gradient(rgba(53,108,132,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53,108,132,.07) 1px, transparent 1px),
    radial-gradient(ellipse at 80% 15%, rgba(22,201,228,.12), transparent 34rem);
  background-size: 54px 54px, 54px 54px, auto;
}
.signal-gallery-hero .signal-back { margin-bottom: 2.4rem; }
.signal-gallery-hero h1 { margin: 0 0 1.2rem; font-size: clamp(3.6rem, 7vw, 6rem); font-weight: 600; letter-spacing: -.06em; line-height: .98; }
.signal-gallery-lead { max-width: 670px; margin: 0; color: var(--signal-muted); font-size: 1rem; line-height: 1.75; }
.signal-gallery-metadata { display: flex; flex-wrap: wrap; gap: .75rem 1.6rem; margin-top: 2.2rem; padding-top: 1.1rem; border-top: 1px solid #233b4f; color: var(--signal-muted); font-size: .59rem; font-weight: 700; letter-spacing: .13em; }
.signal-gallery-metadata span { display: inline-flex; align-items: center; gap: .5rem; }
.signal-gallery-metadata i { width: 6px; height: 6px; }
.signal-gallery-section { padding-block: 3rem clamp(5rem, 8vw, 7rem); background: var(--signal-field); }
.signal-gallery-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 1rem; }
.signal-shot { min-width: 0; padding: .65rem; overflow: hidden; border: 1px solid #2a4053; border-radius: 3px; background: #101f32; color: var(--signal-text); text-align: left; cursor: pointer; transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
.signal-shot:hover { border-color: var(--signal-cyan); box-shadow: 0 12px 28px rgba(0,0,0,.25), 0 0 22px rgba(22,201,228,.09); transform: translateY(-4px); }
.signal-shot-image { position: relative; display: block; overflow: hidden; background: #08111f; }
.signal-shot-image img { width: 100%; aspect-ratio: 512 / 890; object-fit: cover; object-position: top; transition: transform .35s ease; }
.signal-shot:hover .signal-shot-image img { transform: scale(1.025); }
.signal-shot-open { position: absolute; top: .6rem; right: .6rem; display: grid; width: 30px; height: 30px; place-items: center; border: 1px solid rgba(22,201,228,.72); background: rgba(7,13,31,.9); color: var(--signal-cyan); opacity: 0; transform: translateY(3px); transition: opacity .2s ease, transform .2s ease; }
.signal-shot:hover .signal-shot-open, .signal-shot:focus-visible .signal-shot-open { opacity: 1; transform: translateY(0); }
.signal-shot-label { display: grid; gap: .36rem; padding: .8rem .25rem .25rem; }
.signal-shot-label > span { color: var(--signal-cyan); font-size: .55rem; font-weight: 700; letter-spacing: .12em; }
.signal-shot:nth-child(2) .signal-shot-label > span, .signal-shot:nth-child(6) .signal-shot-label > span { color: var(--signal-amber); }
.signal-shot:nth-child(4) .signal-shot-label > span, .signal-shot:nth-child(5) .signal-shot-label > span { color: var(--signal-coral); }
.signal-shot-label strong { color: #e2edf1; font-family: var(--font-display); font-size: .98rem; font-weight: 500; line-height: 1.2; }
.signal-gallery-footnote { display: flex; align-items: flex-start; gap: .65rem; max-width: 640px; margin: 2rem 0 0; color: var(--signal-muted); font-size: .76rem; line-height: 1.6; }
.signal-gallery-footnote-node { color: var(--signal-cyan); font-size: .7rem; }
.signal-gallery-return { display: flex; align-items: center; flex-wrap: wrap; gap: 1.6rem; margin-top: 2rem; }
.signal-button-outline { border-color: #476074; background: transparent; color: var(--signal-text); box-shadow: none; }
.signal-button-outline:hover { border-color: var(--signal-cyan); background: #11253a; color: white; box-shadow: none; }

/* Native modal image viewer */
.signal-lightbox { width: min(96vw, 1000px); max-width: none; max-height: min(94svh, 1000px); padding: 0; overflow: hidden; border: 1px solid #36566e; border-radius: 4px; background: #091525; color: var(--signal-text); box-shadow: 0 25px 90px rgba(0,0,0,.72), 0 0 35px rgba(22,201,228,.1); }
.signal-lightbox::backdrop { background: rgba(2,7,16,.88); backdrop-filter: blur(5px); }
.signal-lightbox-bar { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .9rem 1rem; border-bottom: 1px solid #263e53; background: #101f32; }
.signal-lightbox-bar h2 { margin: 0; color: #dce8ed; font-family: var(--font-body); font-size: .73rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.signal-lightbox-bar h2 span { margin-left: .5rem; color: var(--signal-cyan); }
.signal-lightbox-close { display: inline-flex; align-items: center; gap: .5rem; min-height: 38px; padding: .45rem .7rem; border: 1px solid #476074; background: #0a1727; color: var(--signal-text); font-size: .75rem; font-weight: 700; cursor: pointer; }
.signal-lightbox-close:hover { border-color: var(--signal-cyan); color: var(--signal-cyan); }
.signal-lightbox-close span { font-size: 1.15rem; line-height: .8; }
.signal-lightbox-content { display: grid; grid-template-columns: 54px minmax(0,1fr) 54px; align-items: center; gap: .5rem; padding: 1rem; }
.signal-lightbox-content figure { display: grid; justify-items: center; gap: .7rem; min-width: 0; margin: 0; }
.signal-lightbox-content img { display: block; width: auto; max-width: 100%; max-height: calc(94svh - 9rem); object-fit: contain; background: #050b13; }
.signal-lightbox-content figcaption { color: var(--signal-muted); font-size: .75rem; text-align: center; }
.signal-lightbox-arrow { display: grid; width: 44px; height: 44px; place-items: center; border: 1px solid #35536a; background: #11263b; color: var(--signal-cyan); font-size: 1.25rem; cursor: pointer; }
.signal-lightbox-arrow:hover { border-color: var(--signal-cyan); background: #16334b; }
.signal-lightbox-hint { margin: 0; padding: 0 1rem 1rem; color: #72899a; font-size: .63rem; text-align: center; }

@media (max-width: 940px) {
  .signal-hero-grid { grid-template-columns: 1fr .8fr; gap: 1rem; min-height: 620px; }
  .signal-hero-art { min-height: 510px; }
  .signal-art-label { right: -4%; }
  .signal-route-layout { grid-template-columns: .75fr 1.25fr; gap: 2.5rem; }
  .signal-fact-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .signal-fact-card { min-height: 250px; }
  .signal-gallery-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
}
@media (max-width: 700px) {
  .signal-wrap { width: min(100% - 2rem, 560px); }
  .signal-hero-grid { grid-template-columns: 1fr; gap: .5rem; padding-top: 2.5rem; }
  .signal-hero-copy { max-width: none; }
  .signal-hero-copy .signal-back { margin-bottom: 2rem; }
  .signal-hero-art { width: min(100%, 490px); min-height: 510px; margin-inline: auto; }
  .signal-hero-graph { inset: 0; width: 100%; }
  .signal-device { width: 245px; }
  .signal-art-label { right: 0; top: 12%; }
  .signal-art-index { left: 3%; bottom: 5%; }
  .signal-route-layout { grid-template-columns: 1fr; gap: 2.3rem; }
  .signal-section-intro h2 { font-size: clamp(2.7rem, 11vw, 3.8rem); }
  .signal-route-node { grid-template-columns: 56px minmax(0,1fr); gap: .7rem; min-height: 116px; }
  .signal-route-marker { width: 50px; height: 50px; font-size: 1.3rem; }
  .signal-route-card { min-height: 100px; padding: .8rem 2.7rem .8rem .9rem; }
  .signal-route-card strong { font-size: 1.2rem; }
  .signal-route-caption { margin-left: 64px; }
  .signal-intern-wrap { grid-template-columns: 1fr; gap: 2rem; }
  .signal-outbound-grid { grid-template-columns: repeat(2,1fr); }
  .signal-gallery-grid { grid-template-columns: repeat(2, minmax(0,1fr)); gap: .7rem; }
  .signal-shot { padding: .45rem; }
  .signal-shot-label { padding-top: .65rem; }
  .signal-gallery-hero h1 { font-size: clamp(3.35rem, 12vw, 5rem); }
  .signal-gallery-section { padding-top: 2rem; }
}
@media (max-width: 440px) {
  .signal-hero h1 { font-size: clamp(3.8rem, 19vw, 5rem); }
  .signal-lead { font-size: 1.35rem; }
  .signal-hero-actions { align-items: flex-start; flex-direction: column; gap: 1.15rem; }
  .signal-hero-art { min-height: 445px; }
  .signal-device { width: 216px; }
  .signal-art-label { max-width: 145px; padding: .5rem .6rem; font-size: .63rem; }
  .signal-fact-grid { gap: .6rem; }
  .signal-fact-card { min-height: 245px; padding: .9rem; }
  .signal-fact-card h3 { font-size: 1.1rem; }
  .signal-fact-card p { font-size: .72rem; }
  .signal-fact-id { font-size: .49rem; }
  .signal-fact-node { width: 65px; height: 65px; margin-block: 1.2rem .9rem; }
  .signal-music-note { align-items: flex-start; }
  .signal-gallery-metadata { gap: .65rem 1rem; font-size: .51rem; }
  .signal-shot-label strong { font-size: .85rem; }
  .signal-shot-label > span { font-size: .48rem; }
  .signal-gallery-return { align-items: flex-start; flex-direction: column; gap: 1rem; }
  .signal-lightbox { width: 100vw; max-width: 100vw; max-height: 100svh; border: 0; border-radius: 0; }
  .signal-lightbox-bar { padding: .7rem; }
  .signal-lightbox-bar h2 { font-size: .61rem; }
  .signal-lightbox-content { grid-template-columns: 40px minmax(0,1fr) 40px; gap: .3rem; padding: .5rem; }
  .signal-lightbox-arrow { width: 38px; height: 42px; }
  .signal-lightbox-content img { max-height: calc(100svh - 9rem); }
}
@media (prefers-reduced-motion: reduce) {
  .signal-site main *,
  .signal-site main *::before,
  .signal-site main *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .signal-route-edge-active { stroke-dashoffset: 0 !important; }
}