:root {
  --abyss: #06030B;
  --violet: #4B177D;
  --cyan: #35F3FF;
  --vermilion: #FF375F;
  --magenta: #D54CFF;
  --pearl: #E9E0FF;
  --amber: #D6A340;
  --indigo: #151B46;
  --shade-font: "Bungee Shade", "Impact", "Arial Black", fantasy;
  --head-font: "Syne", "Trebuchet MS", system-ui, sans-serif;
  --serif-font: "Noto Serif JP", Georgia, "Times New Roman", serif;
  --ui-font: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", system-ui, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  overflow: hidden;
  background: var(--abyss);
  color: var(--pearl);
}

body {
  font-family: var(--serif-font);
  letter-spacing: 0.01em;
}

button { font: inherit; }

.crt-shell {
  position: fixed;
  inset: 0;
  isolation: isolate;
  background:
    radial-gradient(circle at 74% 18%, rgba(213, 76, 255, 0.34), transparent 30%),
    radial-gradient(circle at 16% 84%, rgba(53, 243, 255, 0.2), transparent 28%),
    linear-gradient(118deg, var(--abyss) 0%, #10051e 33%, var(--indigo) 58%, #0c0314 100%);
  overflow: hidden;
}

.crt-shell::before {
  content: "";
  position: absolute;
  inset: 4.5vh 6vw;
  border: 1px solid rgba(53, 243, 255, 0.28);
  box-shadow: inset 0 0 80px rgba(6, 3, 11, 0.85), 0 0 55px rgba(213, 76, 255, 0.18);
  pointer-events: none;
  z-index: 4;
}

.noise-layer,
.scanlines,
.phosphor-mask,
.degauss {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.noise-layer {
  opacity: 0.27;
  z-index: 7;
  background-image:
    repeating-radial-gradient(circle at 17% 23%, rgba(233,224,255,0.12) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(93deg, transparent 0 6px, rgba(255,55,95,0.08) 6px 7px, transparent 7px 13px);
  mix-blend-mode: screen;
  animation: noiseDrift 0.6s steps(2) infinite;
}

.scanlines {
  z-index: 8;
  background: repeating-linear-gradient(180deg, rgba(233, 224, 255, 0.08) 0 1px, transparent 1px 4px);
  mix-blend-mode: overlay;
}

.phosphor-mask {
  z-index: 6;
  background: repeating-linear-gradient(90deg, rgba(53,243,255,0.035) 0 1px, rgba(213,76,255,0.035) 1px 2px, rgba(255,55,95,0.025) 2px 3px, transparent 3px 6px);
}

.degauss {
  z-index: 9;
  opacity: 0;
  background: radial-gradient(circle, rgba(233,224,255,0.58), rgba(53,243,255,0.24) 22%, rgba(213,76,255,0.2) 44%, transparent 70%);
  transform: scale(0.25);
}

.degauss.pulse { animation: degaussPulse 900ms ease-out; }

.intro-tuner {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  background:
    linear-gradient(transparent 0 44%, rgba(53,243,255,0.16) 45%, rgba(213,76,255,0.25) 47%, transparent 51%),
    var(--abyss);
  transition: opacity 900ms ease, transform 900ms ease, visibility 900ms;
}

.intro-tuner.hidden {
  opacity: 0;
  transform: scale(1.08);
  visibility: hidden;
}

.intro-bug {
  position: absolute;
  top: 11vh;
  left: 9vw;
  opacity: 0.54;
}

.tune-knob {
  width: min(34vw, 230px);
  aspect-ratio: 1;
  border: 1px solid rgba(214, 163, 64, 0.66);
  border-radius: 50%;
  color: var(--pearl);
  background:
    radial-gradient(circle at 35% 30%, rgba(233,224,255,0.28), transparent 14%),
    conic-gradient(from 20deg, var(--violet), var(--abyss), var(--indigo), var(--magenta), var(--violet));
  box-shadow: 0 0 60px rgba(213, 76, 255, 0.42), inset 0 0 48px rgba(6, 3, 11, 0.88);
  cursor: pointer;
  animation: knobBreathe 3s ease-in-out infinite;
}

.knob-face {
  display: block;
  width: 64%;
  height: 64%;
  margin: 18% auto 0;
  border-radius: 50%;
  border: 1px solid rgba(53, 243, 255, 0.5);
  background: radial-gradient(circle, rgba(6,3,11,0.3), rgba(6,3,11,0.9));
}

.knob-face::after {
  content: "";
  display: block;
  width: 3px;
  height: 42%;
  margin: 8% auto;
  background: var(--cyan);
  box-shadow: 0 0 12px var(--cyan);
}

.knob-label, .tracking-readout, .timestamp, .channel-meta, .entry-tab, .citation-strip, .rail-mark, .footnote {
  font-family: var(--ui-font);
}

.knob-label {
  position: relative;
  top: -42%;
  display: block;
  font-size: 0.8rem;
  letter-spacing: 0.28em;
}

.tracking-readout {
  position: absolute;
  bottom: 16vh;
  left: 10vw;
  color: var(--cyan);
  font-size: clamp(0.72rem, 1.4vw, 1rem);
  letter-spacing: 0.2em;
  text-shadow: 2px 0 var(--magenta), -2px 0 rgba(53,243,255,0.55);
}

.horizontal-noise {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg, transparent 0 26px, rgba(233,224,255,0.18) 27px 29px, transparent 30px 68px);
  animation: tracking 1.2s linear infinite;
}

.transmission-ui {
  position: absolute;
  inset: 7vh 8vw auto 8vw;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--pearl);
  pointer-events: none;
}

.station-bug {
  font-family: var(--shade-font);
  font-size: clamp(1rem, 1.8vw, 1.55rem);
  color: var(--pearl);
  text-shadow: 3px 0 var(--magenta), -3px 0 var(--cyan), 0 0 18px rgba(213,76,255,0.9);
}

.timestamp {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: rgba(233, 224, 255, 0.7);
}

.index-rail {
  position: absolute;
  z-index: 12;
  top: 18vh;
  bottom: 14vh;
  left: 3.2vw;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.index-rail::before {
  content: "";
  position: absolute;
  top: -2vh;
  bottom: -2vh;
  left: 50%;
  width: 1px;
  background: linear-gradient(transparent, var(--cyan), var(--vermilion), transparent);
}

.rail-mark {
  position: relative;
  width: 46px;
  min-height: 70px;
  border: 1px solid rgba(53, 243, 255, 0.28);
  color: rgba(233, 224, 255, 0.58);
  background: rgba(6, 3, 11, 0.68);
  cursor: pointer;
  writing-mode: vertical-rl;
  transition: transform 300ms ease, color 300ms ease, border-color 300ms ease;
}

.rail-mark em {
  font-style: normal;
  font-size: 0.62rem;
  color: var(--amber);
}

.rail-mark.active {
  color: var(--cyan);
  border-color: var(--vermilion);
  transform: translateX(12px) rotate(-2deg);
  box-shadow: 0 0 20px rgba(255, 55, 95, 0.35);
}

.channels, .channel {
  position: absolute;
  inset: 0;
}

.channel {
  opacity: 0;
  visibility: hidden;
  transform: scale(1.04) translateY(2vh);
  transition: opacity 720ms ease, transform 900ms cubic-bezier(.16,.9,.22,1), visibility 720ms;
  background:
    radial-gradient(circle at var(--glow-x, 70%) var(--glow-y, 30%), rgba(213,76,255,0.23), transparent 28%),
    linear-gradient(128deg, rgba(75,23,125,0.22), rgba(6,3,11,0.92) 46%, rgba(21,27,70,0.58));
}

.channel.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1) translateY(0);
}

.channel.tuning .channel-title,
.channel.tuning .lacquer-pane { animation: misregister 480ms steps(2); }

.safe-zone {
  position: absolute;
  inset: 14vh 10vw 13vh 11vw;
}

.channel-meta {
  color: var(--cyan);
  font-size: clamp(0.7rem, 1vw, 0.88rem);
  letter-spacing: 0.24em;
  margin-bottom: 1.5vh;
  text-shadow: 2px 0 rgba(213,76,255,0.8);
}

.channel-title {
  position: relative;
  z-index: 2;
  margin: 0;
  max-width: 82vw;
  font-family: var(--shade-font);
  font-size: clamp(3.2rem, 10vw, 10.8rem);
  line-height: 0.84;
  color: var(--pearl);
  text-shadow: 5px 0 var(--magenta), -5px 0 var(--cyan), 0 0 38px rgba(213, 76, 255, 0.72);
  letter-spacing: -0.04em;
}

.channel-title.cropped {
  margin-left: -4vw;
  max-width: 92vw;
}

.lacquer-pane {
  position: relative;
  z-index: 3;
  width: min(640px, 54vw);
  margin-top: 4vh;
  padding: 34px 38px 30px;
  background: linear-gradient(135deg, rgba(21, 27, 70, 0.78), rgba(6, 3, 11, 0.82));
  border: 1px solid rgba(53, 243, 255, 0.44);
  border-left-color: var(--vermilion);
  box-shadow: 0 24px 90px rgba(0,0,0,0.58), inset 0 0 38px rgba(75, 23, 125, 0.5);
  clip-path: polygon(0 0, calc(100% - 34px) 0, 100% 28px, 100% 100%, 24px 100%, 0 calc(100% - 18px));
}

.lacquer-pane::after {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(214, 163, 64, 0.18);
  pointer-events: none;
}

.entry-tab {
  position: absolute;
  top: -15px;
  left: 28px;
  padding: 6px 14px;
  background: var(--abyss);
  border: 1px solid var(--cyan);
  color: var(--cyan);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  transform: rotate(-1deg);
}

.entry-tab.vermilion { color: var(--vermilion); border-color: var(--vermilion); }
.entry-tab.amber { color: var(--amber); border-color: var(--amber); }
.entry-tab.pearl { color: var(--pearl); border-color: var(--pearl); }

.lacquer-pane h2 {
  margin: 0 0 18px;
  font-family: var(--head-font);
  color: var(--pearl);
  font-size: clamp(1.5rem, 2.6vw, 2.6rem);
  line-height: 1;
}

.lacquer-pane p {
  margin: 0 0 14px;
  color: rgba(233, 224, 255, 0.86);
  font-size: clamp(1rem, 1.25vw, 1.18rem);
  line-height: 1.74;
}

.ruby-line {
  font-family: var(--ui-font);
  color: var(--cyan) !important;
  text-shadow: 2px 0 var(--magenta);
}

.ruby-line span { color: var(--vermilion); }

.plaque {
  position: absolute;
  z-index: 4;
  max-width: 280px;
  padding: 12px 16px;
  background: rgba(6, 3, 11, 0.74);
  border: 1px solid rgba(255, 55, 95, 0.55);
  color: var(--amber);
  font-size: 0.78rem;
  line-height: 1.45;
  letter-spacing: 0.08em;
  box-shadow: 0 0 26px rgba(255, 55, 95, 0.18);
  animation: footnoteFlicker 4s infinite;
}

.one { right: 5vw; top: 20vh; transform: rotate(3deg); }
.two { right: 18vw; bottom: 15vh; transform: rotate(-4deg); }
.three { left: 48vw; top: 54vh; transform: rotate(2deg); }
.four { right: 7vw; bottom: 22vh; transform: rotate(-3deg); }
.five { right: 9vw; top: 18vh; transform: rotate(4deg); }
.six { left: 14vw; bottom: 18vh; transform: rotate(-2deg); }

.citation-strip {
  position: absolute;
  z-index: 11;
  left: 0;
  right: 0;
  bottom: 8vh;
  padding: 11px 0;
  background: rgba(6, 3, 11, 0.72);
  border-top: 1px solid rgba(53, 243, 255, 0.28);
  border-bottom: 1px solid rgba(213, 76, 255, 0.28);
  color: var(--pearl);
  font-size: clamp(0.72rem, 1.1vw, 0.92rem);
  letter-spacing: 0.18em;
  white-space: nowrap;
  text-indent: 100vw;
  animation: subtitleDrift 17s linear infinite;
}

.laserdisc-ring {
  position: absolute;
  right: -10vw;
  top: 8vh;
  width: min(58vw, 760px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: repeating-radial-gradient(circle, transparent 0 22px, rgba(53,243,255,0.16) 23px 24px, transparent 25px 48px), conic-gradient(from 90deg, rgba(213,76,255,0.28), rgba(53,243,255,0.16), rgba(214,163,64,0.1), rgba(213,76,255,0.28));
  opacity: 0.56;
  filter: blur(0.2px);
  animation: ringTurn 16s linear infinite;
}

.offset-entry { margin-left: 20vw; margin-top: 2vh; border-color: rgba(255,55,95,0.55); }
.dream-entry { margin-left: 6vw; width: min(700px, 58vw); }
.tape-entry { margin-left: 28vw; margin-top: 3vh; }
.dawn-entry { width: min(720px, 58vw); background: linear-gradient(135deg, rgba(233,224,255,0.2), rgba(21,27,70,0.78), rgba(6,3,11,0.64)); }

.thread-map {
  position: absolute;
  inset: 36vh 8vw 16vh 8vw;
  z-index: 2;
  background:
    linear-gradient(24deg, transparent 49.7%, rgba(255,55,95,0.82) 50%, transparent 50.4%),
    linear-gradient(142deg, transparent 49.7%, rgba(255,55,95,0.65) 50%, transparent 50.4%),
    linear-gradient(92deg, transparent 49.7%, rgba(53,243,255,0.42) 50%, transparent 50.4%);
  filter: drop-shadow(0 0 8px rgba(255,55,95,0.75));
}

.node {
  position: absolute;
  padding: 8px 12px;
  color: var(--cyan);
  border: 1px solid rgba(53,243,255,0.52);
  background: rgba(6,3,11,0.76);
  font-family: var(--ui-font);
  font-size: 0.75rem;
}
.n1 { left: 2%; top: 12%; } .n2 { right: 16%; top: 20%; } .n3 { left: 38%; bottom: 8%; } .n4 { right: 4%; bottom: 28%; }

.moth-orbit {
  position: absolute;
  right: 12vw;
  top: 24vh;
  width: 240px;
  aspect-ratio: 1;
  border: 1px dashed rgba(214,163,64,0.4);
  border-radius: 50%;
  animation: ringTurn 12s linear infinite reverse;
}

.moth-orbit i {
  position: absolute;
  width: 14px;
  height: 8px;
  background: var(--pearl);
  border-radius: 80% 20% 80% 20%;
  box-shadow: 0 0 14px var(--cyan);
}
.moth-orbit i:nth-child(1) { left: 50%; top: -4px; }
.moth-orbit i:nth-child(2) { right: 5%; top: 25%; }
.moth-orbit i:nth-child(3) { right: 19%; bottom: 8%; }
.moth-orbit i:nth-child(4) { left: 8%; bottom: 18%; }
.moth-orbit i:nth-child(5) { left: -3%; top: 34%; }

.cassette-shelf {
  position: absolute;
  left: 7vw;
  bottom: 12vh;
  display: flex;
  gap: 8px;
  transform: perspective(700px) rotateX(8deg) rotateZ(-2deg);
}

.cassette-shelf span {
  display: grid;
  place-items: center;
  width: 54px;
  height: 220px;
  padding: 10px 5px;
  writing-mode: vertical-rl;
  color: var(--pearl);
  font-family: var(--ui-font);
  font-size: 0.72rem;
  background: linear-gradient(180deg, rgba(75,23,125,0.94), rgba(6,3,11,0.94));
  border: 1px solid rgba(214,163,64,0.55);
  box-shadow: inset 0 0 22px rgba(213,76,255,0.22);
}

.dawn {
  background:
    radial-gradient(circle at 68% 24%, rgba(233,224,255,0.34), transparent 30%),
    linear-gradient(128deg, rgba(214,163,64,0.12), rgba(21,27,70,0.78) 45%, rgba(6,3,11,0.88));
}

.dawn.active .crt-shell, .dawn.active { filter: saturate(0.9) brightness(1.08); }

@keyframes noiseDrift { 0% { transform: translate(0,0); } 50% { transform: translate(-1.4%, 1%); } 100% { transform: translate(1%, -1%); } }
@keyframes tracking { from { transform: translateY(-9vh); } to { transform: translateY(9vh); } }
@keyframes knobBreathe { 0%, 100% { transform: rotate(-8deg) scale(1); } 50% { transform: rotate(8deg) scale(1.04); } }
@keyframes degaussPulse { 0% { opacity: 0; transform: scale(0.16); } 35% { opacity: 0.82; } 100% { opacity: 0; transform: scale(1.9); } }
@keyframes misregister { 0%,100% { text-shadow: 5px 0 var(--magenta), -5px 0 var(--cyan); } 35% { transform: translateX(-7px); text-shadow: -9px 0 var(--magenta), 8px 0 var(--cyan); } 65% { transform: translateX(7px); } }
@keyframes footnoteFlicker { 0%, 94%, 100% { opacity: 0.92; } 95% { opacity: 0.22; } 96% { opacity: 1; } 97% { opacity: 0.46; } }
@keyframes subtitleDrift { from { text-indent: 100vw; } to { text-indent: -130vw; } }
@keyframes ringTurn { to { transform: rotate(360deg); } }

@media (max-width: 760px) {
  .safe-zone { inset: 14vh 7vw 13vh 18vw; }
  .channel-title { font-size: clamp(3rem, 16vw, 6rem); }
  .lacquer-pane, .offset-entry, .dream-entry, .tape-entry, .dawn-entry { width: 76vw; margin-left: 0; padding: 28px 24px; }
  .plaque { display: none; }
  .timestamp { display: none; }
  .cassette-shelf { left: 20vw; opacity: 0.5; }
  .thread-map, .moth-orbit { opacity: 0.42; }
}