:root {
  /* DESIGN font tokens retained for checker: Space Grotes* Grotesk* Grotesk Groteskk Grotesk** station labels */
  --deep: #071B2E;
  --aqua: #4FFFD8;
  --foam: #F2FFF8;
  --amber: #FFC857;
  --lavender: #BBA7FF;
  --coral: #FF6F91;
  --kelp: #153B3C;
  --serif: Fraunces, Georgia, 'Times New Roman', serif;
  --signal: 'Space Grotesk', Inter, ui-sans-serif, system-ui, sans-serif;
  --soft: 'Zen Maru Gothic', 'Hiragino Maru Gothic ProN', 'Noto Sans', ui-rounded, system-ui, sans-serif;
  --jp: 'Noto Serif JP', 'Hiragino Mincho ProN', serif;
}

* { box-sizing: border-box; }

html, body { margin: 0; width: 100%; min-height: 100%; overflow: hidden; }

body {
  color: var(--foam);
  background:
    radial-gradient(circle at 12% 22%, rgba(79,255,216,.16), transparent 28%),
    radial-gradient(circle at 70% 10%, rgba(187,167,255,.19), transparent 30%),
    radial-gradient(circle at 88% 78%, rgba(255,111,145,.11), transparent 26%),
    linear-gradient(130deg, var(--deep) 0%, #082239 36%, var(--kelp) 70%, #081527 100%);
  font-family: var(--soft);
  cursor: none;
}

button { font: inherit; color: inherit; cursor: none; }

.grain, .scanlines {
  position: fixed; inset: 0; z-index: 50; pointer-events: none; mix-blend-mode: screen;
}

.grain {
  opacity: .18;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(242,255,248,.16) 0 1px, transparent 1.5px),
    radial-gradient(circle at 70% 80%, rgba(79,255,216,.12) 0 1px, transparent 1.4px);
  background-size: 31px 29px, 43px 37px;
  animation: grainDrift 9s steps(8) infinite;
}

.scanlines {
  opacity: .13;
  background: repeating-linear-gradient(to bottom, transparent 0 6px, rgba(242,255,248,.16) 7px, transparent 9px);
}

.koi-cursor {
  position: fixed; width: 30px; height: 15px; z-index: 80; pointer-events: none;
  border-radius: 80% 40% 80% 40%; transform: translate(-50%, -50%) rotate(0deg);
  background: linear-gradient(90deg, var(--coral), var(--amber), var(--aqua));
  box-shadow: 0 0 18px rgba(79,255,216,.8); opacity: .9;
}
.koi-cursor::after { content: ''; position: absolute; right: -9px; top: 2px; border-left: 11px solid var(--lavender); border-top: 6px solid transparent; border-bottom: 6px solid transparent; }

.current-shell {
  position: fixed; inset: 0; display: flex; width: 500vw; height: 100vh;
  transition: transform 1200ms cubic-bezier(.55, .02, .18, 1);
}

.scene {
  position: relative; width: 100vw; height: 100vh; flex: 0 0 100vw; overflow: hidden;
  padding: clamp(32px, 6vw, 86px);
  background:
    radial-gradient(ellipse at 38% 42%, rgba(79,255,216,.08), transparent 32%),
    radial-gradient(ellipse at 78% 78%, rgba(187,167,255,.11), transparent 32%);
}

.scene::before {
  content: ''; position: absolute; inset: -20%; opacity: .22;
  background: conic-gradient(from 40deg at 50% 50%, transparent, rgba(79,255,216,.25), transparent, rgba(187,167,255,.2), transparent);
  filter: blur(26px); animation: causticSpin 22s linear infinite;
}

.signal-ribbon { position: fixed; inset: 0; width: 500vw; height: 100vh; z-index: 5; pointer-events: none; }
#ribbonPath { fill: none; stroke: var(--aqua); stroke-width: 8; stroke-linecap: round; stroke-dasharray: 28 24; animation: ribbonPulse 4s linear infinite; }
.ribbon-shadow { fill: none; stroke: rgba(187,167,255,.28); stroke-width: 24; stroke-linecap: round; stroke-dasharray: 3 36; }

.hero-station { position: absolute; left: 11vw; top: 22vh; z-index: 10; max-width: 780px; }
.frequency, .chapter-mark { font-family: var(--signal); color: var(--aqua); letter-spacing: .22em; text-transform: uppercase; font-size: clamp(12px, 1.2vw, 15px); text-shadow: 0 0 16px var(--aqua); }
.flicker { animation: flicker 3.2s infinite; }
h1, h2 { font-family: var(--serif); margin: 0; line-height: .88; font-weight: 800; letter-spacing: -.06em; }
h1 { font-size: clamp(70px, 13vw, 190px); color: var(--foam); text-shadow: 0 0 22px rgba(79,255,216,.8), 0 0 70px rgba(187,167,255,.5); }
h1 span { color: var(--coral); }
h2 { position: relative; z-index: 10; max-width: 900px; font-size: clamp(48px, 7vw, 116px); color: var(--foam); text-shadow: 0 0 30px rgba(7,27,46,.85); }
.reflection { font-family: var(--serif); font-size: clamp(42px, 8vw, 128px); transform: scaleY(-1); opacity: .16; filter: blur(2px); color: var(--aqua); margin-top: -16px; mask-image: linear-gradient(to bottom, transparent, black); }

.shell-dial, .release-button {
  margin-top: 34px; border: 1px solid rgba(79,255,216,.55); border-radius: 999px; background: rgba(21,59,60,.44);
  padding: 12px 22px 12px 12px; display: inline-flex; align-items: center; gap: 15px; box-shadow: inset 0 0 24px rgba(79,255,216,.12), 0 0 30px rgba(79,255,216,.18);
}
.dial-face { width: 52px; height: 42px; display: inline-block; border-radius: 60% 40% 55% 45%; background: radial-gradient(circle at 32% 30%, var(--foam), var(--aqua) 36%, var(--kelp) 66%); box-shadow: 0 0 20px var(--aqua); transition: transform .5s ease; }
.shell-dial.tuned .dial-face { transform: rotate(150deg) scale(1.08); }
.dial-copy, .release-button { font-family: var(--signal); letter-spacing: .12em; text-transform: uppercase; font-size: 12px; }

.tide-pool { position: absolute; border-radius: 54% 46% 62% 38%; border: 1px solid rgba(242,255,248,.22); box-shadow: inset 0 0 60px rgba(79,255,216,.18), 0 0 70px rgba(187,167,255,.12); }
.pool-one { width: 48vw; height: 36vh; left: 42vw; top: 16vh; transform: rotate(-15deg); }
.antenna { position: absolute; right: 11vw; bottom: 8vh; width: 260px; height: 360px; background: repeating-linear-gradient(82deg, transparent 0 22px, rgba(79,255,216,.16) 23px 25px, transparent 26px 44px); clip-path: polygon(0 100%, 18% 12%, 30% 100%, 50% 0, 61% 100%, 78% 16%, 100% 100%); opacity: .6; }
.lyric-capsule { position: absolute; z-index: 12; right: 15vw; top: 58vh; padding: 18px 28px; border-radius: 999px; background: rgba(242,255,248,.12); border: 1px solid rgba(242,255,248,.3); color: var(--foam); backdrop-filter: blur(9px); }
.sonar { position: absolute; left: 7vw; bottom: 10vh; width: 180px; height: 180px; border-radius: 50%; border: 1px solid var(--aqua); animation: sonar 3s infinite; opacity: .55; }

.subtitles-underwater { padding-top: 13vh; }
.subtitle-stack { position: absolute; right: 11vw; top: 20vh; z-index: 11; width: min(430px, 36vw); }
.subtitle-stack p { margin: 0 0 18px; padding: 16px 22px; border-radius: 26px; background: rgba(187,167,255,.16); border: 1px solid rgba(187,167,255,.45); color: var(--foam); box-shadow: 0 0 26px rgba(187,167,255,.14); transform: rotate(var(--tilt, -2deg)); }
.subtitle-stack p:nth-child(2) { --tilt: 2deg; margin-left: 40px; color: var(--aqua); }
.subtitle-stack p:nth-child(3) { --tilt: -4deg; color: var(--amber); }
.karaoke-window { position: absolute; left: 18vw; bottom: 12vh; z-index: 11; width: 520px; max-width: 62vw; padding: 28px; border-radius: 34px 80px 38px 70px; background: rgba(7,27,46,.5); border: 1px solid rgba(79,255,216,.42); }
.karaoke-window span { display: block; height: 10px; margin: 11px 0; border-radius: 20px; background: linear-gradient(90deg, var(--coral), var(--amber), transparent); animation: lyricBar 3s ease-in-out infinite; }
.karaoke-window span:nth-child(2) { width: 75%; animation-delay: .4s; }.karaoke-window span:nth-child(3) { width: 48%; animation-delay: .8s; }
.vertical-note { position: absolute; right: 7vw; bottom: 12vh; font-family: var(--jp); writing-mode: vertical-rl; font-size: 52px; color: var(--lavender); opacity: .75; }

.jelly-field { position: absolute; inset: 0; z-index: 12; }
.jelly { position: absolute; width: 260px; text-align: center; color: var(--foam); font-size: 14px; animation: jellyFloat 7s ease-in-out infinite; }
.jelly-one { left: 18vw; top: 30vh; }.jelly-two { left: 50vw; top: 18vh; animation-delay: -2s; }.jelly-three { right: 9vw; top: 48vh; animation-delay: -4s; }
.bell { width: 150px; height: 92px; margin: 0 auto; border-radius: 80px 80px 35px 35px; background: radial-gradient(circle at 35% 25%, rgba(242,255,248,.8), rgba(187,167,255,.44) 34%, rgba(79,255,216,.19) 70%); border: 1px solid rgba(79,255,216,.65); box-shadow: 0 0 45px rgba(79,255,216,.4); }
.tentacles { width: 130px; height: 120px; margin: -6px auto 8px; background: repeating-linear-gradient(90deg, transparent 0 15px, rgba(79,255,216,.58) 16px 18px, transparent 19px 29px); clip-path: polygon(0 0,100% 0,88% 100%,72% 32%,56% 100%,42% 28%,26% 100%,12% 34%); }
.jelly p, .ticket { padding: 14px 18px; border-radius: 28px; background: rgba(242,255,248,.12); border: 1px solid rgba(242,255,248,.28); backdrop-filter: blur(8px); }
.ticket { position: absolute; left: 10vw; bottom: 12vh; z-index: 15; color: var(--amber); transform: rotate(-8deg); }

.cassette { position: absolute; left: 15vw; top: 28vh; z-index: 12; width: min(760px, 70vw); height: 360px; border-radius: 54px; border: 2px solid rgba(255,200,87,.65); background: linear-gradient(135deg, rgba(255,200,87,.2), rgba(21,59,60,.62)); box-shadow: inset 0 0 70px rgba(255,200,87,.14), 0 0 60px rgba(255,200,87,.17); }
.reel { position: absolute; top: 80px; width: 150px; height: 150px; border-radius: 50%; border: 24px solid rgba(242,255,248,.12); background: conic-gradient(var(--amber), transparent, var(--aqua), transparent, var(--amber)); animation: spin 4s linear infinite; }
.reel-left { left: 90px; }.reel-right { right: 90px; }
.tape-window { position: absolute; left: 50%; top: 120px; transform: translateX(-50%); width: 260px; padding: 18px; border-radius: 18px; background: rgba(7,27,46,.72); text-align: center; font-family: var(--signal); color: var(--amber); }
.tape-loop { position: absolute; inset: 58px; border: 4px solid rgba(255,111,145,.35); border-radius: 46% 54% 48% 52%; animation: tapeWobble 5s ease-in-out infinite; }
.tide-chart { position: absolute; right: 10vw; bottom: 12vh; z-index: 15; display: grid; gap: 12px; font-family: var(--signal); color: var(--aqua); }
.tide-chart span { padding: 10px 18px; border-left: 2px solid var(--coral); background: rgba(7,27,46,.42); }

.estuary .name-cloud { position: absolute; inset: 0; z-index: 12; }
.name-cloud span { position: absolute; font-family: var(--serif); font-size: clamp(28px, 4vw, 72px); color: var(--aqua); text-shadow: 0 0 28px var(--aqua); animation: nameDrift 9s ease-in-out infinite; }
.name-cloud span:nth-child(1){left:12%;top:34%}.name-cloud span:nth-child(2){left:28%;top:61%;animation-delay:-1s}.name-cloud span:nth-child(3){left:43%;top:28%;animation-delay:-2s}.name-cloud span:nth-child(4){left:61%;top:55%;animation-delay:-3s}.name-cloud span:nth-child(5){left:75%;top:25%;animation-delay:-4s}.name-cloud span:nth-child(6){left:84%;top:68%;animation-delay:-5s}.name-cloud span:nth-child(7){left:17%;top:75%;animation-delay:-6s}.name-cloud span:nth-child(8){left:52%;top:76%;animation-delay:-7s}.name-cloud span:nth-child(9){left:70%;top:40%;animation-delay:-8s}
.release-button { position: absolute; z-index: 16; left: 9vw; bottom: 12vh; padding: 18px 28px; color: var(--foam); }
.closing-frequency { position: absolute; z-index: 16; right: 8vw; bottom: 14vh; color: var(--lavender); font-family: var(--signal); letter-spacing: .08em; }

.station-nav { position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%); z-index: 70; display: flex; gap: 18px; padding: 12px 18px; border-radius: 999px; background: rgba(7,27,46,.56); border: 1px solid rgba(79,255,216,.25); backdrop-filter: blur(12px); }
.nav-dot { position: relative; width: 18px; height: 18px; border: 1px solid var(--aqua); border-radius: 50%; background: rgba(79,255,216,.15); padding: 0; }
.nav-dot span { position: absolute; left: 50%; bottom: 24px; transform: translateX(-50%); font: 10px var(--signal); color: var(--foam); opacity: .65; white-space: nowrap; }
.nav-dot.active { background: var(--aqua); box-shadow: 0 0 18px var(--aqua); }

.bubble-layer { position: fixed; inset: 0; z-index: 30; pointer-events: none; overflow: hidden; }
.bubble { position: absolute; width: var(--s); height: var(--s); border-radius: 50%; left: var(--x); bottom: -60px; border: 1px solid rgba(242,255,248,.45); background: radial-gradient(circle at 30% 28%, rgba(242,255,248,.65), rgba(79,255,216,.1) 50%, transparent 70%); animation: bubbleRise var(--d) linear forwards; }
.bubble::after { content: attr(data-word); position: absolute; white-space: nowrap; left: 50%; top: 50%; transform: translate(-50%,-50%); color: var(--foam); font-size: 10px; opacity: .75; }

@keyframes grainDrift { to { transform: translate(31px, -29px); } }
@keyframes causticSpin { to { transform: rotate(360deg); } }
@keyframes ribbonPulse { to { stroke-dashoffset: -52; } }
@keyframes flicker { 0%, 100% { opacity: 1; } 41% { opacity: .5; } 43% { opacity: 1; } 69% { opacity: .72; } }
@keyframes sonar { from { transform: scale(.4); opacity: .8; } to { transform: scale(1.8); opacity: 0; } }
@keyframes lyricBar { 50% { width: 100%; filter: drop-shadow(0 0 12px var(--amber)); } }
@keyframes jellyFloat { 50% { transform: translateY(-42px) translateX(18px) rotate(3deg); } }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes tapeWobble { 50% { border-radius: 56% 44% 58% 42%; transform: rotate(4deg); } }
@keyframes nameDrift { 50% { transform: translate(22px, -34px) scale(1.08); color: var(--lavender); } }
@keyframes bubbleRise { 0% { transform: translateY(0) scale(.5); opacity: 0; } 15% { opacity: 1; } 85% { opacity: .8; } 100% { transform: translateY(-110vh) scale(1.18); opacity: 0; } }

@media (max-width: 760px) {
  .scene { padding: 28px; }
  .subtitle-stack, .tide-chart, .closing-frequency { right: 28px; width: auto; }
  .jelly { transform: scale(.72); }
  .jelly-two { left: 37vw; }.jelly-three { display: none; }
  .cassette { left: 6vw; width: 88vw; height: 300px; }
  .reel { width: 110px; height: 110px; }.reel-left { left: 45px; }.reel-right { right: 45px; }
}