:root {
  /* Typography brief retained: narrative paragraphs, navigation marks, “last signal: platform 9 / rain delay / heart unresolved.”, loves.quest wordmark. */
  --void: #05060D;
  --violet: #151022;
  --cyan: #35F4FF;
  --magenta: #FF2E88;
  --amber: #FFB84D;
  --cream: #D8C7A8;
  --graphite: #2B3446;
  --display: "Space Grotesk", "Poppins", "Futura", "Trebuchet MS", Arial, sans-serif;
  --geo: "Montserrat", "Poppins", "Futura", "Avenir Next", Arial, sans-serif;
  --body: "IBM Plex Sans", "Inter", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--void);
  color: var(--cream);
  font-family: var(--body);
  overflow-x: hidden;
  cursor: crosshair;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 12% 20%, rgba(53, 244, 255, .15), transparent 26%),
    radial-gradient(circle at 88% 38%, rgba(255, 46, 136, .13), transparent 30%),
    radial-gradient(circle at 58% 84%, rgba(255, 184, 77, .09), transparent 35%),
    linear-gradient(160deg, #05060D 0%, #151022 48%, #05060D 100%);
  z-index: -4;
}

.grain, .rain-field {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 20;
}

.grain {
  opacity: .22;
  mix-blend-mode: screen;
  background-image:
    repeating-radial-gradient(circle at 17% 31%, rgba(216, 199, 168, .17) 0 1px, transparent 1px 3px),
    repeating-linear-gradient(93deg, rgba(255, 255, 255, .04) 0 1px, transparent 1px 5px);
}

.rain-field {
  opacity: .36;
  background-image: repeating-linear-gradient(102deg, transparent 0 22px, rgba(53, 244, 255, .11) 23px, transparent 24px);
  animation: rainSlide 9s linear infinite;
}

.cursor-ripple {
  position: fixed;
  width: 24px;
  height: 24px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(.5);
  opacity: 0;
  box-shadow: 0 0 24px rgba(53, 244, 255, .6);
  z-index: 50;
}

.cursor-ripple.active { animation: cursorWave .65s ease-out; }

.signal-nav {
  position: fixed;
  top: 24px;
  left: 24px;
  right: 24px;
  z-index: 30;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  font-family: var(--geo);
  font-size: clamp(.62rem, 1vw, .78rem);
  letter-spacing: .22em;
  text-transform: uppercase;
}

.signal-nav a {
  color: rgba(216, 199, 168, .72);
  text-decoration: none;
  text-shadow: 0 0 14px rgba(53, 244, 255, .25);
  transition: color .4s ease, text-shadow .4s ease;
}

.signal-nav a:hover { color: var(--cyan); text-shadow: 0 0 18px var(--cyan); }

.night-walk { position: relative; }

.scene {
  min-height: 100vh;
  position: relative;
  padding: clamp(86px, 10vw, 144px) clamp(22px, 6vw, 92px);
  overflow: hidden;
}

.hero-scene {
  display: flex;
  align-items: center;
  isolation: isolate;
}

.skyline {
  position: absolute;
  inset: auto -4% 0 -4%;
  height: 38vh;
  opacity: .58;
  background:
    linear-gradient(to top, #05060D 0 20%, transparent 21%),
    linear-gradient(to top, var(--graphite) 0 42%, transparent 42%) 2% 100% / 7% 80% no-repeat,
    linear-gradient(to top, #151022 0 64%, transparent 64%) 11% 100% / 9% 95% no-repeat,
    linear-gradient(to top, var(--graphite) 0 52%, transparent 52%) 23% 100% / 8% 75% no-repeat,
    linear-gradient(to top, #151022 0 72%, transparent 72%) 37% 100% / 11% 90% no-repeat,
    linear-gradient(to top, var(--graphite) 0 48%, transparent 48%) 55% 100% / 8% 82% no-repeat,
    linear-gradient(to top, #151022 0 68%, transparent 68%) 68% 100% / 12% 100% no-repeat,
    linear-gradient(to top, var(--graphite) 0 46%, transparent 46%) 84% 100% / 10% 78% no-repeat;
  filter: blur(.2px) drop-shadow(0 -18px 34px rgba(53, 244, 255, .08));
}

.signal-river {
  position: absolute;
  left: 50%;
  top: 55%;
  width: 22vw;
  height: 330vh;
  transform: translateX(-50%) rotate(9deg);
  border-left: 2px solid rgba(53, 244, 255, .42);
  border-right: 1px solid rgba(255, 46, 136, .26);
  border-radius: 52% 48% 45% 55%;
  filter: blur(.2px) drop-shadow(0 0 30px rgba(53, 244, 255, .3));
  opacity: .5;
  z-index: -1;
}

.hero-copy {
  max-width: 760px;
  margin-left: 4vw;
  transform: translateY(3vh);
}

.coordinate, .chapter-marker, .station-code, figcaption, .final-coordinate, .scanline-message, .signal-button {
  font-family: var(--geo);
  text-transform: uppercase;
  letter-spacing: .22em;
}

.coordinate { color: var(--cyan); font-size: .78rem; text-shadow: 0 0 18px rgba(53, 244, 255, .8); }
.flicker { animation: flicker 4.8s infinite; }

h1, h2 {
  font-family: var(--display);
  margin: 0;
  letter-spacing: -.065em;
  line-height: .87;
}

h1 {
  font-size: clamp(4.6rem, 16vw, 15rem);
  color: var(--cream);
  text-shadow: 0 0 8px rgba(216,199,168,.35), 0 0 38px rgba(255,46,136,.34), -8px 5px 0 rgba(53,244,255,.06);
  animation: develop 2.4s ease-out both;
}

h2 { font-size: clamp(2.6rem, 8vw, 7.8rem); }

.opening-line, .light-pool p, .roof-copy p, .final-panel p, .letter-fragment p {
  font-size: clamp(1rem, 1.75vw, 1.35rem);
  line-height: 1.68;
  color: rgba(216, 199, 168, .82);
}

.opening-line { max-width: 600px; margin-top: 24px; }

.hero-ripple, .mirror-ripples {
  position: absolute;
  left: 50%;
  bottom: 18%;
  width: 42vw;
  aspect-ratio: 1;
  transform: translateX(-50%) perspective(700px) rotateX(68deg);
  z-index: -1;
}

.hero-ripple span, .mirror-ripples span {
  position: absolute;
  inset: 48%;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 35px rgba(53, 244, 255, .55), inset 0 0 28px rgba(255, 46, 136, .18);
  animation: ripple 5s ease-out infinite;
}
.hero-ripple span:nth-child(2), .mirror-ripples span:nth-child(2) { animation-delay: 1.25s; border-color: var(--magenta); }
.hero-ripple span:nth-child(3), .mirror-ripples span:nth-child(3) { animation-delay: 2.5s; border-color: var(--amber); }
.mirror-ripples span:nth-child(4) { animation-delay: 3.3s; }

.photo-strip {
  position: absolute;
  right: clamp(18px, 7vw, 120px);
  top: 18vh;
  width: clamp(118px, 15vw, 190px);
  padding: 11px;
  background: var(--cream);
  transform: rotate(8deg);
  box-shadow: 0 24px 70px rgba(0,0,0,.7), 0 0 35px rgba(255,46,136,.18);
}

.drifting-photo { animation: drift 8s ease-in-out infinite; }

.negative-frame {
  position: relative;
  height: 116px;
  margin-bottom: 10px;
  overflow: hidden;
  background:
    radial-gradient(circle at 42% 38%, rgba(216,199,168,.28), transparent 15%),
    linear-gradient(135deg, rgba(53,244,255,.38), transparent 34%),
    linear-gradient(20deg, #05060D, #2B3446 52%, #151022);
}

.negative-frame:last-child { margin-bottom: 0; }
.negative-frame span { position: absolute; left: 8px; bottom: 7px; color: var(--cream); font: 700 .55rem var(--geo); letter-spacing: .18em; }
.negative-frame i { position: absolute; inset: 18% 28%; border-radius: 45% 55% 40% 60%; border: 1px solid rgba(216,199,168,.35); filter: blur(.4px); }

.station-code { position: absolute; right: 5vw; bottom: 7vh; color: rgba(255,184,77,.7); font-size: .72rem; }

.chapter-marker { color: var(--cyan); font-size: .74rem; margin-bottom: 32px; text-shadow: 0 0 18px rgba(53,244,255,.5); }
.chapter-marker.amber { color: var(--amber); }
.chapter-marker.magenta { color: var(--magenta); }

.chapter-train { padding-top: 18vh; }
.curve-map {
  position: absolute;
  inset: 8% -12% auto 6%;
  height: 72vh;
  border-bottom: 3px solid rgba(53,244,255,.44);
  border-left: 1px solid rgba(255,46,136,.35);
  border-radius: 0 0 0 75%;
  transform: rotate(-8deg);
  filter: drop-shadow(0 0 18px rgba(53,244,255,.4));
}

.light-pool {
  max-width: 760px;
  padding: clamp(26px, 4vw, 54px);
  border-radius: 48% 52% 38% 62% / 62% 36% 64% 38%;
  background: radial-gradient(circle at 35% 42%, rgba(21,16,34,.96), rgba(5,6,13,.68) 68%, transparent 74%);
  box-shadow: 0 0 90px rgba(53,244,255,.12);
}

.evidence-photo {
  position: absolute;
  margin: 0;
  padding: 13px 13px 34px;
  background: var(--cream);
  color: var(--void);
  box-shadow: 0 28px 75px rgba(0,0,0,.6), 0 0 35px rgba(53,244,255,.12);
  transform-style: preserve-3d;
  transition: transform .6s ease, filter .6s ease;
}

.evidence-photo:hover { filter: saturate(1.25); transform: rotate(var(--hover-rot, 0deg)) translateY(-10px); }
.evidence-photo::after {
  content: attr(data-note);
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: -34px;
  color: var(--magenta);
  font: 600 .64rem var(--geo);
  letter-spacing: .08em;
  opacity: 0;
  transform: translateY(-8px);
  transition: .45s ease;
}
.evidence-photo:hover::after { opacity: 1; transform: translateY(0); }

.photo-image {
  width: 100%;
  height: 100%;
  min-height: 230px;
  background-blend-mode: screen, normal;
  filter: sepia(.38) grayscale(.62) contrast(1.08);
  position: relative;
  overflow: hidden;
}
.photo-image::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(8deg, transparent 0 15px, rgba(216,199,168,.14) 16px, transparent 18px), radial-gradient(circle at 58% 36%, transparent 0 13%, rgba(255,46,136,.26) 14%, transparent 24%);
}
.subway-photo { background: radial-gradient(circle at 55% 28%, rgba(255,184,77,.32), transparent 14%), linear-gradient(95deg, rgba(53,244,255,.3), transparent 25%), repeating-linear-gradient(0deg, #05060D 0 22px, #2B3446 23px 30px); }
.window-photo { background: linear-gradient(90deg, rgba(255,46,136,.22), transparent), repeating-linear-gradient(90deg, #151022 0 34px, #2B3446 35px 38px, #05060D 39px 76px); }
.payphone-photo { background: radial-gradient(circle at 56% 45%, rgba(53,244,255,.33), transparent 20%), linear-gradient(130deg, #05060D, #2B3446 48%, #151022); }

figcaption { position: absolute; left: 13px; bottom: 12px; right: 13px; font-size: .56rem; color: var(--graphite); }
.polaroid-left { width: min(320px, 42vw); right: 9vw; top: 25vh; --hover-rot: -7deg; transform: rotate(-12deg); }

.ripple-pad {
  position: absolute;
  left: 18vw;
  bottom: 13vh;
  width: 230px;
  height: 120px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--cyan);
  font-family: var(--geo);
  font-size: .7rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  background: radial-gradient(ellipse, rgba(53,244,255,.18), rgba(21,16,34,.24) 55%, transparent 70%);
  border: 1px solid rgba(53,244,255,.25);
}
.ripple-pad::after { content: attr(data-ripple); position: absolute; top: 100%; color: rgba(216,199,168,.68); opacity: 0; transition: .4s ease; width: 260px; text-align: center; }
.ripple-pad:hover::after { opacity: 1; }

.chapter-roof { display: flex; align-items: center; }
.antenna-field { position: absolute; inset: auto 0 0 0; height: 48vh; background: linear-gradient(to top, rgba(43,52,70,.44), transparent); }
.antenna-field span { position: absolute; bottom: 0; width: 2px; background: var(--graphite); box-shadow: 0 0 20px rgba(255,184,77,.22); }
.antenna-field span:nth-child(1) { left: 13%; height: 46%; }.antenna-field span:nth-child(2) { left: 32%; height: 70%; }.antenna-field span:nth-child(3) { right: 28%; height: 52%; }.antenna-field span:nth-child(4) { right: 10%; height: 78%; }
.antenna-field span::before { content: ""; position: absolute; left: 50%; top: -10px; width: 90px; height: 1px; background: rgba(216,199,168,.42); transform: translateX(-50%) rotate(-18deg); }

.roof-copy { max-width: 800px; margin-left: 8vw; }
.roof-copy h2 { color: var(--cream); text-shadow: 0 0 35px rgba(255,184,77,.2); }
.constellation-card {
  position: absolute;
  right: 9vw;
  top: 19vh;
  width: min(420px, 38vw);
  height: 320px;
  border-radius: 56% 44% 51% 49%;
  border: 1px solid rgba(53,244,255,.4);
  background: radial-gradient(circle at 50% 45%, rgba(53,244,255,.13), transparent 42%), rgba(21,16,34,.55);
  box-shadow: inset 0 0 45px rgba(53,244,255,.1), 0 0 80px rgba(255,46,136,.13);
}
.constellation-card p { position: absolute; bottom: 28px; left: 32px; right: 32px; font: 600 .72rem var(--geo); letter-spacing: .18em; text-transform: uppercase; color: var(--amber); }
.pin { position: absolute; width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 22px var(--cyan); }
.pin::after { content: ""; position: absolute; inset: -28px; border: 1px solid currentColor; border-radius: 50%; animation: pulse 2.8s infinite; }
.pin-a { left: 24%; top: 28%; }.pin-b { left: 57%; top: 19%; color: var(--magenta); background: var(--magenta); box-shadow: 0 0 22px var(--magenta); }.pin-c { left: 71%; top: 53%; }.pin-d { left: 36%; top: 66%; color: var(--amber); background: var(--amber); box-shadow: 0 0 22px var(--amber); }

.archive-cloud { position: relative; min-height: 72vh; }
.archive-cloud .small { left: 5vw; top: 8vh; width: min(290px, 38vw); transform: rotate(9deg); }
.archive-cloud .tall { right: 8vw; top: 4vh; width: min(340px, 40vw); transform: rotate(-5deg); }
.archive-cloud .tall .photo-image { min-height: 390px; }
.letter-fragment {
  position: absolute;
  left: 33vw;
  top: 26vh;
  max-width: 410px;
  padding: 34px;
  transform: rotate(-3deg);
  color: var(--void);
  background: linear-gradient(135deg, rgba(216,199,168,.94), rgba(255,184,77,.62));
  box-shadow: 0 20px 70px rgba(0,0,0,.5), 0 0 30px rgba(255,184,77,.17);
}
.letter-fragment span { font-family: var(--geo); letter-spacing: .18em; text-transform: uppercase; font-size: .68rem; }
.letter-fragment p { color: var(--void); margin-bottom: 0; }
.scanline-message { position: absolute; left: 9vw; bottom: 9vh; color: var(--magenta); font-size: .8rem; text-shadow: 0 0 20px rgba(255,46,136,.65); }

.chapter-meet { display: grid; place-items: center; text-align: center; }
.chapter-meet .chapter-marker { position: absolute; top: 14vh; left: 9vw; }
.final-panel { max-width: 880px; z-index: 2; }
.final-panel h2 { color: var(--cream); text-shadow: 0 0 45px rgba(53,244,255,.25), 0 0 24px rgba(255,46,136,.16); }
.final-coordinate { margin-top: 36px; color: var(--cyan); font-size: .78rem; }
.signal-button {
  position: absolute;
  bottom: 12vh;
  border: 1px solid rgba(53,244,255,.62);
  color: var(--cyan);
  background: rgba(21,16,34,.38);
  padding: 16px 22px;
  border-radius: 999px;
  box-shadow: 0 0 34px rgba(53,244,255,.13);
  cursor: crosshair;
}
.signal-button:hover { color: var(--void); background: var(--cyan); box-shadow: 0 0 42px rgba(53,244,255,.6); }

.page-wave {
  position: fixed;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--cyan);
  pointer-events: none;
  transform: translate(-50%, -50%);
  animation: pageWave 1.4s ease-out forwards;
  z-index: 45;
}

@keyframes rainSlide { to { background-position: 240px 520px; } }
@keyframes cursorWave { 0% { opacity: .9; transform: translate(-50%, -50%) scale(.4); } 100% { opacity: 0; transform: translate(-50%, -50%) scale(3.8); } }
@keyframes ripple { 0% { inset: 48%; opacity: .95; } 85%,100% { inset: 2%; opacity: 0; } }
@keyframes flicker { 0%, 100% { opacity: .9; } 7% { opacity: .38; } 9% { opacity: 1; } 55% { opacity: .7; } 58% { opacity: .25; } 62% { opacity: .96; } }
@keyframes develop { from { opacity: 0; filter: blur(18px); letter-spacing: .08em; } to { opacity: 1; filter: blur(0); letter-spacing: -.065em; } }
@keyframes drift { 0%,100% { transform: rotate(8deg) translateY(0); } 50% { transform: rotate(5deg) translateY(18px); } }
@keyframes pulse { from { transform: scale(.15); opacity: .9; } to { transform: scale(1.4); opacity: 0; } }
@keyframes pageWave { to { width: 560px; height: 560px; opacity: 0; } }

@media (max-width: 780px) {
  .signal-nav { flex-wrap: wrap; position: absolute; }
  .hero-copy { margin-left: 0; }
  .photo-strip { opacity: .45; right: -18px; }
  .polaroid-left, .constellation-card, .archive-cloud .small, .archive-cloud .tall, .letter-fragment { position: relative; inset: auto; width: min(88vw, 390px); margin: 34px auto; display: block; }
  .chapter-roof { display: block; }
  .roof-copy { margin-left: 0; }
  .archive-cloud { min-height: auto; }
  .ripple-pad { left: 12vw; bottom: 4vh; }
}