/* ================================
   base / design system
   ================================ */
:root {
  /* ── color ── */
  --bg: #050506;
  --panel: rgba(244, 239, 226, 0.055);
  --panel-strong: rgba(244, 239, 226, 0.11);
  --text: #f2eadb;
  --muted: rgba(242, 234, 219, 0.66);
  --faint: rgba(242, 234, 219, 0.2);
  --line: rgba(242, 234, 219, 0.16);
  --acid: #d7ff49;
  --ember: #ff5b35;
  --cyan: #67d8ff;
  --green: #73f2a7;
  --paper: #f4ebd3;
  --ink: #15110b;

  /* ── background layers ── */
  --bg-grid: linear-gradient(rgba(242, 234, 219, 0.035) 1px, transparent 1px);
  --bg-grid-90: linear-gradient(90deg, rgba(242, 234, 219, 0.025) 1px, transparent 1px);
  --bg-glow-1: radial-gradient(circle at 78% 12%, rgba(215, 255, 73, 0.12), transparent 26rem);
  --bg-glow-2: radial-gradient(circle at 12% 76%, rgba(255, 91, 53, 0.12), transparent 30rem);

  /* ── typography ── */
  --font-display: "Bodoni Moda", "Noto Serif SC", serif;
  --font-serif: "Noto Serif SC", serif;
  --font-sans: "Outfit", "Noto Serif SC", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --fs-hero: clamp(7rem, 22vw, 22rem);
  --fs-display: clamp(3.5rem, 12vw, 10rem);
  --fs-title: clamp(2rem, 5vw, 4.5rem);
  --fs-heading: clamp(1.6rem, 3vw, 2.8rem);
  --fs-body: clamp(1.05rem, 2.2vw, 1.8rem);
  --fs-small: clamp(1rem, 2vw, 1.4rem);
  --fs-label: 0.75rem;
  --fs-micro: 0.72rem;

  /* ── spacing ── */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 3rem;
  --space-xl: 5rem;
  --space-2xl: clamp(6rem, 12vw, 10rem);

  /* ── animation ── */
  --dur-fast: 0.2s;
  --dur-normal: 0.35s;
  --dur-slow: 0.8s;
  --dur-enter: 0.6s;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  transition-property: transform, opacity, background, color, border-color, box-shadow;
  transition-duration: 0s;
}

*:hover,
*::before:hover,
*::after:hover {
  transition-duration: 0.2s;
}

html {
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  scroll-behavior: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background:
    linear-gradient(rgba(242, 234, 219, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(242, 234, 219, 0.025) 1px, transparent 1px),
    radial-gradient(
      circle at 78% 12%,
      rgba(215, 255, 73, 0.12),
      transparent 26rem
    ),
    radial-gradient(
      circle at 12% 76%,
      rgba(255, 91, 53, 0.12),
      transparent 30rem
    ),
    var(--bg);
  background-size:
    64px 64px,
    64px 64px,
    auto,
    auto,
    auto;
  color: var(--text);
  cursor: none;
  font-family: var(--font-sans);
  font-weight: 300;
  text-rendering: optimizeLegibility;
}

button,
a,
input {
  font: inherit;
}

button {
  color: inherit;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

button:hover {
  opacity: 0.9;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--acid);
}

button {
  background: transparent;
  border: 0;
  cursor: none;
  transition: transform 0.2s ease;
}

button:active {
  transform: scale(0.98);
}

em {
  color: var(--acid);
  font-family: var(--font-display);
  font-style: italic;
  transition: color 0.3s ease;
}

em:hover {
  color: var(--cyan);
}

::selection {
  background: var(--acid);
  color: #111;
  text-shadow: none;
}

.grain-overlay {
  position: fixed;
  inset: -50%;
  z-index: 9000;
  pointer-events: none;
  opacity: 0.1;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  animation: grainShift 0.55s steps(2) infinite;
  will-change: transform;
}

@keyframes grainShift {
  0% {
    transform: translate(0, 0);
  }
  50% {
    transform: translate(-4%, 3%);
  }
}

#threeCanvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.8;
}

.cursor,
.cursor-follower {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 10000;
  pointer-events: none;
  will-change: transform;
}

.cursor {
  width: 7px;
  height: 7px;
  background: var(--acid);
  border-radius: 50%;
  mix-blend-mode: difference;
  transition: transform 0.1s ease;
}

body.cursor-hover .cursor {
  transform: translate(-50%, -50%) scale(1.5);
}

.cursor-follower {
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition:
    width 0.35s var(--ease),
    height 0.35s var(--ease),
    border-radius 0.35s var(--ease);
}

body.cursor-hover .cursor-follower {
  width: 74px;
  height: 32px;
  border-radius: 2px;
  border-color: rgba(215, 255, 73, 0.6);
}

/* cursor region morphing */
body[data-cursor-room="00"] .cursor-follower {
  width: 60px;
  height: 60px;
  border-color: rgba(215, 255, 73, 0.2);
  mix-blend-mode: exclusion;
}
body[data-cursor-room="01"] .cursor-follower {
  width: 44px;
  height: 44px;
  border-color: rgba(242, 234, 219, 0.3);
}
body[data-cursor-room="02"] .cursor-follower {
  width: 50px;
  height: 50px;
  border-radius: 6px;
  border-color: rgba(103, 216, 255, 0.3);
}
body[data-cursor-room="03"] .cursor-follower {
  width: 24px;
  height: 24px;
  border-radius: 2px;
  border-color: rgba(244, 239, 226, 0.4);
}
body[data-cursor-room="04"] .cursor-follower {
  width: 56px;
  height: 56px;
  border-color: rgba(255, 91, 53, 0.3);
}

/* ================================
   loader / navigation
   ================================ */
.loader {
  position: fixed;
  inset: 0;
  z-index: 10001;
  display: grid;
  place-items: center;
  gap: 1.2rem;
  align-content: center;
  background: #030303;
  transition:
    opacity 0.8s var(--ease),
    visibility 0.8s var(--ease);
}

.loader.is-hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-mark {
  font-family: var(--font-display);
  font-size: clamp(4rem, 13vw, 12rem);
  line-height: 0.8;
  animation: loaderPulse 3s ease-in-out infinite;
}

@keyframes loaderPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.02); }
}

.loader-track {
  width: min(18rem, 62vw);
  height: 1px;
  overflow: hidden;
  background: var(--line);
  position: relative;
}

.loader-track::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--acid), transparent);
  animation: loaderTrackShine 2s ease-in-out infinite;
}

@keyframes loaderTrackShine {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
}

.loader-fill {
  display: block;
  width: 0;
  height: 100%;
  background: var(--acid);
  box-shadow: 0 0 10px var(--acid);
}

.loader-text,
.nav,
.section-label,
.hero-kicker,
.hero-caption,
.section-small {
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.loader-text {
  color: var(--muted);
  font-size: 0.75rem;
  animation: loaderText 2s ease-in-out infinite;
}

@keyframes loaderText {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.nav {
  position: fixed;
  inset: 1.25rem 1.5rem auto;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  mix-blend-mode: difference;
  transition: opacity 0.3s ease;
}

.nav:hover {
  opacity: 0.9;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  transition: transform 0.3s var(--ease), opacity 0.3s ease;
}

.nav-logo:hover {
  transform: scale(1.05);
  opacity: 0.8;
}

.nav-links {
  display: flex;
  gap: clamp(0.8rem, 3vw, 2rem);
  min-width: 0;
}

.nav-link {
  color: var(--muted);
  font-size: 0.74rem;
  transition: color 0.25s ease, transform 0.25s ease;
  position: relative;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s var(--ease);
}

.nav-link:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.back-hint {
  position: fixed;
  left: 50%;
  top: 5rem;
  z-index: 120;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--line);
  background: rgba(5, 5, 6, 0.7);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  opacity: 0;
  transform: translate(-50%, -10px);
  transition: 0.4s var(--ease);
  backdrop-filter: blur(8px);
}

.back-hint.visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* ================================
   home / exhibition rooms
   ================================ */
main,
.page-container {
  position: relative;
  z-index: 1;
}

.section {
  position: relative;
  min-height: 100vh;
  padding: clamp(6rem, 12vw, 10rem) clamp(1.25rem, 5vw, 5rem);
  overflow: hidden;
}

.section::before {
  content: attr(data-room);
  position: absolute;
  right: clamp(1rem, 4vw, 4rem);
  top: clamp(5rem, 9vw, 8rem);
  color: rgba(242, 234, 219, 0.045);
  font-family: var(--font-display);
  font-size: clamp(7rem, 22vw, 22rem);
  line-height: 0.8;
  pointer-events: none;
  transition: color 0.3s ease;
}

.section:hover::before {
  color: rgba(242, 234, 219, 0.06);
}

.section-label {
  display: flex;
  max-width: 76rem;
  margin: 0 auto 3rem;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: 0.74rem;
}

.section-label span {
  position: relative;
}

.section-label span::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--acid);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

.section-label:hover span::after {
  transform: scaleX(1);
}

.section-title {
  max-width: 13ch;
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 4.5rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 0.94;
  position: relative;
}

.section-title em {
  position: relative;
}

.section-title em::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--acid);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}

.section-title:hover em::after {
  transform: scaleX(1);
}

.section-small {
  margin: 0 0 1.3rem;
  color: var(--acid);
  font-size: 0.75rem;
  display: inline-block;
  position: relative;
}

.section-small::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 1px;
  background: var(--acid);
  margin-right: 0.5rem;
  vertical-align: middle;
}

.hero {
  display: grid;
  min-height: 100svh;
  align-items: center;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.hero-decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(215, 255, 73, 0.15);
}

.hero-circle--1 {
  width: 400px;
  height: 400px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: heroCircle1 8s ease-in-out infinite;
}

.hero-circle--2 {
  width: 300px;
  height: 300px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: heroCircle2 6s ease-in-out infinite;
  border-color: rgba(255, 91, 53, 0.15);
}

.hero-circle--3 {
  width: 200px;
  height: 200px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: heroCircle3 4s ease-in-out infinite;
  border-color: rgba(103, 216, 255, 0.15);
}

@keyframes heroCircle1 {
  0%, 100% { transform: translate(-50%, -50%) scale(1) rotate(0deg); opacity: 0.8; }
  50% { transform: translate(-50%, -50%) scale(1.1) rotate(180deg); opacity: 0.4; }
}

@keyframes heroCircle2 {
  0%, 100% { transform: translate(-50%, -50%) scale(1) rotate(0deg); opacity: 0.6; }
  50% { transform: translate(-50%, -50%) scale(0.9) rotate(-180deg); opacity: 0.3; }
}

@keyframes heroCircle3 {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.4; }
  50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.2; }
}

.hero-kicker {
  position: absolute;
  inset: 5rem clamp(1.25rem, 5vw, 5rem) auto;
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.72rem;
}

.hero-kicker span {
  transition: color 0.3s ease;
}

.hero-kicker span:hover {
  color: var(--acid);
}

.hero-content {
  max-width: 78rem;
  margin: 0 auto;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  margin: 0 0 1rem;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  animation: heroEyebrow 3s ease-in-out infinite;
}

@keyframes heroEyebrow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 12vw, 10rem);
  font-weight: 700;
  line-height: 0.76;
  background: linear-gradient(
    135deg,
    rgba(242, 234, 219, 0.25) 0%,
    rgba(215, 255, 73, 0.4) 30%,
    rgba(242, 234, 219, 0.25) 50%,
    rgba(255, 91, 53, 0.3) 70%,
    rgba(242, 234, 219, 0.25) 100%
  );
  background-size: 200% 200%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: heroGradientShift 8s ease-in-out infinite;
}

@keyframes heroGradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero-subtitle {
  max-width: min(42rem, calc(100vw - 2rem));
  margin: 2rem auto 0;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 2.2vw, 1.8rem);
  line-height: 1.7;
  overflow-wrap: anywhere;
  animation: heroSubtitle 4s ease-in-out infinite;
}

@keyframes heroSubtitle {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.hero-caption {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  display: grid;
  gap: 0.7rem;
  justify-items: center;
  color: var(--muted);
  font-size: 0.72rem;
  transform: translateX(-50%);
  animation: heroCaption 4s ease-in-out infinite;
}

@keyframes heroCaption {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.hero-caption i {
  display: block;
  width: 1px;
  height: 4rem;
  background: linear-gradient(var(--acid), transparent);
  animation: scrollIndicator 2s ease-in-out infinite;
}

@keyframes scrollIndicator {
  0% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.5; transform: scaleY(0.7); }
  100% { opacity: 1; transform: scaleY(1); }
}

.about-layout,
.world-heading,
.thoughts-layout,
.contact-stage {
  max-width: 76rem;
  margin: 0 auto;
}

.about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(19rem, 0.7fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: end;
}

.about-decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.about-line {
  position: absolute;
  background: linear-gradient(180deg, transparent, rgba(215, 255, 73, 0.1), transparent);
  width: 1px;
}

.about-line--1 {
  right: 20%;
  top: 10%;
  height: 80%;
  animation: aboutLine 5s ease-in-out infinite;
}

.about-line--2 {
  right: 25%;
  top: 15%;
  height: 70%;
  animation: aboutLine 5s ease-in-out 2s infinite;
  opacity: 0.5;
}

@keyframes aboutLine {
  0%, 100% { transform: scaleY(1); opacity: 1; }
  50% { transform: scaleY(0.85); opacity: 0.6; }
}

.statement-panel {
  position: relative;
  min-height: 23rem;
  padding: 2rem;
  overflow: hidden;
  border: 1px solid var(--line);
  background: rgba(244, 239, 226, 0.04);
  transition: transform 0.4s var(--ease), border-color 0.3s ease, box-shadow 0.3s ease;
}

.statement-panel:hover {
  border-color: rgba(215, 255, 73, 0.3);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.statement-panel p {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--muted);
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2vw, 1.6rem);
  line-height: 1.85;
  transition: color 0.3s ease;
}

.statement-panel:hover p {
  color: var(--text);
}

.statement-panel span {
  position: absolute;
  left: 2rem;
  bottom: 2rem;
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  transition: transform 0.3s var(--ease);
}

.statement-panel:hover span {
  transform: translateY(-4px);
}

.statement-orbit {
  position: absolute;
  inset: auto -6rem -8rem auto;
  width: 22rem;
  height: 22rem;
  border: 1px solid rgba(215, 255, 73, 0.45);
  border-radius: 50%;
  animation: orbitSpin 20s linear infinite;
  transition: border-color 0.3s ease;
}

.statement-panel:hover .statement-orbit {
  border-color: rgba(215, 255, 73, 0.6);
}

@keyframes orbitSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.archive-strip {
  display: grid;
  max-width: 76rem;
  margin: 5rem auto 0;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  position: relative;
}

.archive-strip::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.archive-item,
.world-card,
.thought-tile,
.contact-link {
  text-align: left;
  will-change: transform;
}

.archive-item {
  min-height: 12rem;
  padding: 1.4rem;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), border-color 0.35s ease;
}

.archive-item:hover {
  background: var(--panel);
  transform: translateY(-6px);
  border-color: rgba(215, 255, 73, 0.2);
}

.archive-item span,
.card-index,
.thought-tile span {
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  transition: transform 0.3s var(--ease);
}

.archive-item:hover span,
.world-card:hover .card-index,
.thought-tile:hover span {
  transform: translateY(-2px);
}

.archive-item strong {
  display: block;
  margin: 2.4rem 0 0.3rem;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  transition: color 0.3s ease;
}

.archive-item:hover strong {
  color: var(--acid);
}

.archive-item em {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  transition: color 0.3s ease;
}

.archive-item:hover em {
  color: var(--text);
}

.world-grid {
  display: grid;
  max-width: 76rem;
  margin: 4rem auto 0;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.world-decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.world-dot {
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--acid);
  border-radius: 50%;
  opacity: 0.3;
}

.world-dot--1 {
  top: 20%;
  right: 15%;
  animation: worldDot 4s ease-in-out infinite;
}

.world-dot--2 {
  top: 40%;
  right: 25%;
  animation: worldDot 4s ease-in-out 1s infinite;
}

.world-dot--3 {
  top: 60%;
  right: 10%;
  animation: worldDot 4s ease-in-out 2s infinite;
}

@keyframes worldDot {
  0%, 100% { transform: scale(1); opacity: 0.3; }
  50% { transform: scale(1.8); opacity: 0.7; }
}

.world-card {
  min-height: 28rem;
  padding: 1.5rem;
  background:
    linear-gradient(
      135deg,
      rgba(244, 239, 226, 0.07),
      rgba(244, 239, 226, 0.015)
    ),
    #060606;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), box-shadow 0.35s var(--ease);
  position: relative;
  overflow: hidden;
}

.world-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(215, 255, 73, 0.05), transparent);
  transition: left 0.6s var(--ease);
  pointer-events: none;
}

.world-card:hover {
  background:
    linear-gradient(
      135deg,
      rgba(244, 239, 226, 0.12),
      rgba(244, 239, 226, 0.04)
    ),
    #080808;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.world-card:hover::before {
  left: 100%;
}

.world-card strong {
  display: block;
  margin: 8rem 0 1.2rem;
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3vw, 2.8rem);
  line-height: 0.95;
  transition: color 0.3s ease, transform 0.3s var(--ease);
}

.world-card:hover strong {
  color: var(--acid);
  transform: translateY(-4px);
}

.world-card p {
  max-width: 17rem;
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
  transition: color 0.3s ease;
}

.world-card:hover p {
  color: var(--text);
}

.world-card i,
.contact-link i {
  display: inline-block;
  margin-top: 2rem;
  color: var(--acid);
  font-family: var(--font-mono);
  font-style: normal;
  text-transform: uppercase;
  transition: transform 0.3s var(--ease), opacity 0.3s ease;
}

.world-card:hover i,
.contact-link:hover i {
  transform: translateX(4px);
  opacity: 0.8;
}

.thoughts-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
  position: relative;
}

.thoughts-layout::before {
  content: "";
  position: absolute;
  left: -2rem;
  top: 0;
  height: 100%;
  width: 2px;
  background: linear-gradient(180deg, transparent, rgba(215, 255, 73, 0.2), transparent);
  animation: thoughtsLine 4s ease-in-out infinite;
}

@keyframes thoughtsLine {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.thoughts-wall {
  display: grid;
  gap: 1rem;
}

.thought-tile {
  padding: 1.4rem;
  border: 1px solid var(--line);
  background: rgba(5, 5, 6, 0.62);
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), border-color 0.35s ease, box-shadow 0.35s ease;
  position: relative;
  overflow: hidden;
}

.thought-tile::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(215, 255, 73, 0.03), transparent);
  transition: left 0.6s var(--ease);
  pointer-events: none;
}

.thought-tile:hover {
  background: var(--panel);
  transform: translateY(-4px);
  border-color: rgba(215, 255, 73, 0.3);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.thought-tile:hover::before {
  left: 100%;
}

.thought-tile:nth-child(2) {
  margin-left: 3rem;
}

.thought-tile p {
  margin: 1rem 0 0;
  color: var(--text);
  font-family: var(--font-serif);
  font-size: clamp(1.05rem, 1.8vw, 1.4rem);
  line-height: 1.6;
  transition: color 0.3s ease;
}

.thought-tile:hover p {
  color: var(--acid);
}

.contact {
  min-height: 92vh;
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: "";
  position: absolute;
  top: 50%;
  right: 10%;
  width: 200px;
  height: 200px;
  border: 1px solid rgba(255, 91, 53, 0.15);
  border-radius: 50%;
  transform: translateY(-50%);
  animation: contactCircle 6s ease-in-out infinite;
}

@keyframes contactCircle {
  0%, 100% { transform: translateY(-50%) scale(1) rotate(0deg); opacity: 0.5; }
  50% { transform: translateY(-50%) scale(1.1) rotate(180deg); opacity: 0.3; }
}

.contact-stage {
  display: grid;
  justify-items: start;
}

.contact-title {
  margin: 0 0 3rem;
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 12vw, 10rem);
  line-height: 0.75;
  position: relative;
}

.contact-title::after {
  content: "";
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--acid);
  animation: contactLine 3s ease-in-out infinite;
}

@keyframes contactLine {
  0%, 100% { width: 60px; opacity: 1; }
  50% { width: 100px; opacity: 0.7; }
}

.contact-links {
  width: min(100%, 42rem);
  border-top: 1px solid var(--line);
  position: relative;
}

.contact-links::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.contact-link {
  display: flex;
  width: 100%;
  justify-content: space-between;
  padding: 1.05rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), padding-left 0.35s var(--ease), border-color 0.35s ease;
}

.contact-link:hover {
  background: var(--panel);
  padding-left: 1rem;
  border-color: rgba(215, 255, 73, 0.3);
}

.contact-link i {
  transition: transform 0.3s var(--ease), color 0.3s var(--ease);
}

.contact-link:hover i {
  transform: translateX(4px);
  color: var(--acid);
}

.contact-link span {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  transition: color 0.3s ease;
}

.contact-link:hover span {
  color: var(--acid);
}

.contact-link i {
  margin-top: 0;
}

.contact-footer {
  margin-top: 4rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.contact-footer span {
  display: inline-block;
  animation: timePulse 2s ease-in-out infinite;
}

@keyframes timePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ================================
   subpages / gallery rooms
   ================================ */
.page-container[hidden] {
  display: none;
}

.sub-page {
  min-height: 100vh;
  padding: clamp(6rem, 10vw, 9rem) clamp(1.25rem, 5vw, 5rem);
  position: relative;
}

.page-back {
  position: fixed;
  left: 1.5rem;
  bottom: 1.5rem;
  z-index: 80;
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--line);
  background: rgba(5, 5, 6, 0.72);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease), border-color 0.3s ease, color 0.3s ease;
}

.page-back:hover {
  transform: translateX(-4px);
  background: rgba(5, 5, 6, 0.9);
  border-color: rgba(215, 255, 73, 0.3);
  color: var(--acid);
}

.sub-hero {
  max-width: 76rem;
  margin: 0 auto 4rem;
  position: relative;
}

.sub-hero::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 2px;
  background: var(--acid);
  animation: subHeroLine 4s ease-in-out infinite;
}

@keyframes subHeroLine {
  0%, 100% { width: 40px; opacity: 1; }
  50% { width: 60px; opacity: 0.7; }
}

.sub-hero span {
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  display: inline-block;
  animation: subHeroSpan 3s ease-in-out infinite;
}

@keyframes subHeroSpan {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.sub-hero h1 {
  margin: 1rem 0;
  font-family: var(--font-serif);
  font-size: clamp(3rem, 8vw, 7rem);
  line-height: 0.86;
  position: relative;
}

.sub-hero h1 em {
  position: relative;
}

.sub-hero h1 em::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--acid);
  transform: scaleX(0);
  transform-origin: left;
  animation: subHeroTitleLine 4s ease-in-out infinite;
}

@keyframes subHeroTitleLine {
  0%, 100% { transform: scaleX(0); opacity: 0; }
  50% { transform: scaleX(1); opacity: 1; }
}

.sub-hero p {
  max-width: 38rem;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.4rem);
  line-height: 1.7;
}

.sub-grid,
.photo-gallery,
.project-rail,
.sound-room,
.manuscript-wall,
.signal-board,
.about-profile {
  max-width: 76rem;
  margin: 0 auto;
}

.sub-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
}

.sub-grid article {
  min-height: 13rem;
  padding: 1.3rem;
  background: #070707;
}

.sub-grid .record-large {
  grid-column: span 2;
  grid-row: span 2;
}

.sub-grid span,
.project-exhibit span,
.signal-link span {
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: transform 0.3s var(--ease);
}

.project-exhibit:hover span,
.signal-link:hover span {
  transform: translateY(-2px);
}

.sub-grid strong {
  display: block;
  margin-top: 2rem;
  font-family: var(--font-serif);
  font-size: 1.4rem;
  line-height: 1.25;
}

.record-large p {
  margin: 2rem 0 0;
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2vw, 1.6rem);
  line-height: 1.5;
}

.photo-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 16rem;
  gap: 0.5rem;
  position: relative;
}

.photo-gallery::before {
  content: "";
  position: absolute;
  top: -1rem;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.photo-item {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: #080808;
  will-change: transform;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.photo-item:hover {
  border-color: rgba(215, 255, 73, 0.3);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.photo-item--tall {
  grid-row: span 2;
}

.photo-item--wide {
  grid-column: span 2;
}

.photo-item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease), filter 0.6s var(--ease), opacity 0.5s var(--ease);
  opacity: 0;
  filter: grayscale(0.2);
}

.photo-item img.loaded {
  opacity: 1;
  filter: grayscale(0);
}

.photo-item::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(244, 239, 226, 0.05), rgba(244, 239, 226, 0.02));
  z-index: 1;
  pointer-events: none;
  transition: opacity 0.5s var(--ease);
}

.photo-item.img-loaded::before {
  opacity: 0;
}

.photo-item span {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  padding: 0.3rem 0.6rem;
  background: rgba(5, 5, 6, 0.65);
  backdrop-filter: blur(6px);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}

.photo-item:hover img {
  transform: scale(1.08);
  filter: grayscale(0) brightness(1.05);
}

.photo-item:hover span {
  opacity: 1;
  transform: translateY(0);
  background: rgba(5, 5, 6, 0.8);
}

/* lightbox */
.photo-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  background: rgba(3, 3, 3, 0.92);
  backdrop-filter: blur(18px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s var(--ease);
}

.photo-lightbox.open {
  opacity: 1;
  pointer-events: auto;
}

.photo-lightbox img {
  max-width: min(90vw, 90vh);
  max-height: 90vh;
  object-fit: contain;
  border: 1px solid var(--line);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
  transition: transform 0.5s var(--ease);
}

.photo-lightbox.open img {
  animation: lightboxZoom 0.5s var(--ease);
}

@keyframes lightboxZoom {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.photo-lightbox-caption {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.45rem 0.9rem;
  background: rgba(5, 5, 6, 0.7);
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  white-space: nowrap;
  animation: captionFade 0.5s ease-out 0.3s both;
}

@keyframes captionFade {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}

.photo-lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 2.4rem;
  height: 2.4rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: rgba(5, 5, 6, 0.7);
  color: var(--muted);
  font-size: 1.1rem;
  transition: color 0.2s, border-color 0.2s, transform 0.3s var(--ease);
}

.photo-lightbox-close:hover {
  color: var(--acid);
  border-color: rgba(215, 255, 73, 0.4);
  transform: rotate(90deg);
}

.project-rail {
  display: grid;
  gap: 1rem;
  position: relative;
}

.project-rail::before {
  content: "";
  position: absolute;
  left: -1rem;
  top: 0;
  height: 100%;
  width: 2px;
  background: linear-gradient(180deg, transparent, rgba(215, 255, 73, 0.2), transparent);
  animation: projectLine 4s ease-in-out infinite;
}

@keyframes projectLine {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.project-exhibit {
  display: grid;
  grid-template-columns: 8rem 1fr minmax(16rem, 0.75fr);
  gap: 1rem;
  align-items: baseline;
  padding: 1.4rem;
  border: 1px solid var(--line);
  background: rgba(244, 239, 226, 0.035);
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), border-color 0.35s ease, box-shadow 0.35s ease;
  position: relative;
  overflow: hidden;
}

.project-exhibit::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(215, 255, 73, 0.05), transparent);
  transition: left 0.6s var(--ease);
  pointer-events: none;
}

.project-exhibit:hover {
  transform: translateX(4px);
  background: rgba(244, 239, 226, 0.06);
  border-color: rgba(215, 255, 73, 0.2);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.project-exhibit:hover::before {
  left: 100%;
}

.project-exhibit h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 3.5vw, 3rem);
  transition: color 0.3s ease, transform 0.3s var(--ease);
}

.project-exhibit:hover h2 {
  color: var(--acid);
  transform: translateX(4px);
}

.project-exhibit p,
.project-exhibit small {
  color: var(--muted);
  line-height: 1.7;
  transition: color 0.3s ease;
}

.project-exhibit:hover p,
.project-exhibit:hover small {
  color: var(--text);
}

/* ===== sound room — night sound field ===== */
.sound-room {
  display: grid;
  grid-template-columns: minmax(18rem, 0.8fr) 1fr;
  gap: clamp(2rem, 6vw, 6rem);
  align-items: center;
  position: relative;
  z-index: 1;
}

/* vinyl装置 */
.vinyl-installation {
  position: relative;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
  overflow: hidden;
  border-radius: 4px;
}

.vinyl-glow {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle, var(--track-color, #ff5b35) 0%, transparent 70%);
  opacity: 0.12;
  transition: opacity 0.8s ease, background 0.8s ease;
  pointer-events: none;
  z-index: 0;
}

.vinyl-disc {
  position: relative;
  display: grid;
  width: 72%;
  aspect-ratio: 1;
  place-items: center;
  border-radius: 50%;
  background:
    repeating-radial-gradient(circle, #090909 0 7px, #151515 8px 9px),
    conic-gradient(from 0deg, #0a0a0a, #1a1a1a, #0a0a0a, #1a1a1a, #0a0a0a);
  animation: spinDisc 9s linear infinite;
  will-change: transform;
  z-index: 1;
}

.vinyl-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
  width: 32%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--track-color, var(--acid));
  color: #111;
  justify-content: center;
  transition: background 0.6s ease;
}

.vinyl-label-title {
  font-family: var(--font-serif);
  font-size: clamp(0.85rem, 1.8vw, 1.4rem);
  font-weight: 700;
  line-height: 1.1;
  text-align: center;
}

.vinyl-label-artist {
  font-family: var(--font-mono);
  font-size: clamp(0.5rem, 1vw, 0.7rem);
  opacity: 0.7;
}

@keyframes spinDisc {
  to { transform: rotate(360deg); }
}

.vinyl-arm {
  position: absolute;
  right: 12%;
  top: 10%;
  width: 35%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--paper));
  transform: rotate(28deg);
  transform-origin: right center;
  z-index: 2;
  transition: transform 0.6s var(--ease);
}

.vinyl-arm::after {
  content: "";
  position: absolute;
  right: -4px;
  top: -4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--paper);
}

.vinyl-ring {
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  border: 1px solid rgba(242, 234, 219, 0.06);
  pointer-events: none;
  z-index: 1;
}

/* 曲目列表 */
.track-list {
  display: grid;
  gap: 0;
}

.track-item {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.2rem;
  align-items: center;
  padding: 1.3rem 1.2rem;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  transition: all 0.4s var(--ease);
  position: relative;
}

.track-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0;
  background: var(--track-item-color, var(--acid));
  opacity: 0.06;
  transition: width 0.4s var(--ease), opacity 0.4s var(--ease);
}

.track-item:hover::before,
.track-item.active::before {
  width: 100%;
  opacity: 0.08;
}

.track-item:hover {
  padding-left: 1.8rem;
}

.track-item.active {
  padding-left: 1.8rem;
  border-bottom-color: var(--track-item-color, var(--acid));
}

.track-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  min-width: 1.5rem;
  transition: color 0.3s ease;
}

.track-item.active .track-num {
  color: var(--track-item-color, var(--acid));
}

.track-info {
  display: grid;
  gap: 0.15rem;
}

.track-name {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.2vw, 1.5rem);
  font-weight: 700;
  transition: color 0.3s ease;
}

.track-item.active .track-name {
  color: var(--track-item-color, var(--acid));
}

.track-artist {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  font-style: normal;
  letter-spacing: 0.02em;
}

.track-lyric-preview {
  margin: 0.4rem 0 0;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  color: var(--faint);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.5s var(--ease), opacity 0.4s ease, margin 0.4s ease;
}

.track-item:hover .track-lyric-preview,
.track-item.active .track-lyric-preview {
  max-height: 3rem;
  opacity: 1;
  margin-top: 0.5rem;
}

/* EQ动画柱 */
.track-eq {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 1.5rem;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.track-item.active .track-eq {
  opacity: 1;
}

.track-eq span {
  display: block;
  width: 3px;
  background: var(--track-item-color, var(--acid));
  border-radius: 1px;
  animation: eqBounce 1.2s ease-in-out infinite;
}

.track-eq span:nth-child(1) { height: 40%; animation-delay: 0s; }
.track-eq span:nth-child(2) { height: 70%; animation-delay: 0.15s; }
.track-eq span:nth-child(3) { height: 50%; animation-delay: 0.3s; }
.track-eq span:nth-child(4) { height: 80%; animation-delay: 0.1s; }
.track-eq span:nth-child(5) { height: 35%; animation-delay: 0.25s; }

@keyframes eqBounce {
  0%, 100% { transform: scaleY(0.4); }
  50% { transform: scaleY(1); }
}

/* 浮动歌词粒子 */
.lyric-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.lyric-particle {
  position: absolute;
  font-family: var(--font-serif);
  font-size: clamp(0.7rem, 1.2vw, 1rem);
  color: var(--track-color, var(--acid));
  opacity: 0;
  white-space: nowrap;
  animation: lyricFloat 12s linear infinite;
}

@keyframes lyricFloat {
  0% {
    opacity: 0;
    transform: translateY(20px) translateX(0);
  }
  10% { opacity: 0.15; }
  90% { opacity: 0.15; }
  100% {
    opacity: 0;
    transform: translateY(-60px) translateX(30px);
  }
}

/* 歌词沉浸幕 */
.lyric-curtain {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(5, 5, 6, 0.96);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
  backdrop-filter: blur(20px);
}

.lyric-curtain.open {
  opacity: 1;
  pointer-events: auto;
}

.lyric-curtain-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  font-size: 2rem;
  color: var(--muted);
  background: none;
  border: none;
  cursor: pointer;
  width: 3rem;
  height: 3rem;
  display: grid;
  place-items: center;
  transition: color 0.2s ease;
}

.lyric-curtain-close:hover {
  color: var(--text);
}

.lyric-curtain-content {
  text-align: center;
  max-width: 40rem;
  padding: 2rem;
}

.lyric-curtain-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--track-color, var(--acid));
}

.lyric-curtain-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 6rem);
  font-weight: 700;
  margin: 1rem 0 2rem;
  line-height: 1;
  color: var(--track-color, var(--acid));
}

.lyric-curtain-text {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 3vw, 2rem);
  line-height: 2;
  color: var(--text);
  white-space: pre-line;
}

.lyric-curtain-meta {
  display: block;
  margin-top: 3rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.05em;
}

.manuscript-wall {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 76rem;
  margin: 0 auto;
  position: relative;
}

.manuscript-wall::before {
  content: "";
  position: absolute;
  top: -1rem;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.manuscript-card {
  position: relative;
  min-height: 18rem;
  padding: 1.5rem 1.2rem 1.2rem;
  border: 1px solid rgba(21, 17, 11, 0.15);
  background: var(--paper);
  color: var(--ink);
  transform: rotate(var(--tilt, -1deg)) translateY(0);
  transition: transform 0.5s var(--ease), box-shadow 0.5s var(--ease), border-color 0.3s ease;
  opacity: 0;
  animation: manuscriptFadeIn 0.7s calc(var(--delay) * 0.12s) forwards;
}

@keyframes manuscriptFadeIn {
  from {
    opacity: 0;
    transform: rotate(var(--tilt, -1deg)) translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: rotate(var(--tilt, -1deg)) translateY(0) scale(1);
  }
}

.manuscript-card:nth-child(odd) {
  --tilt: -1.5deg;
}

.manuscript-card:nth-child(even) {
  --tilt: 1deg;
}

.manuscript-card:nth-child(3n) {
  --tilt: -0.5deg;
}

.manuscript-card--wide {
  grid-column: span 2;
}

.manuscript-card--tall {
  grid-row: span 2;
  min-height: 32rem;
}

.manuscript-card--accent {
  background: linear-gradient(135deg, var(--paper) 0%, #e8dfc8 100%);
  border-color: rgba(215, 255, 73, 0.3);
}

.manuscript-card:hover {
  transform: rotate(0deg) translateY(-10px) scale(1.02);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2), 0 8px 20px rgba(0, 0, 0, 0.15);
  z-index: 2;
  border-color: rgba(215, 255, 73, 0.3);
}

.manuscript-pin {
  position: absolute;
  top: -6px;
  left: 50%;
  width: 12px;
  height: 12px;
  background: var(--acid);
  border-radius: 50%;
  transform: translateX(-50%);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s var(--ease), box-shadow 0.3s ease;
}

.manuscript-card:hover .manuscript-pin {
  transform: translateX(-50%) scale(1.2);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.manuscript-card:nth-child(even) .manuscript-pin {
  background: var(--ember);
}

.manuscript-card:nth-child(3n) .manuscript-pin {
  background: var(--cyan);
}

.manuscript-wall time {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: rgba(21, 17, 11, 0.5);
  letter-spacing: 0.05em;
  transition: color 0.3s ease;
}

.manuscript-card:hover time {
  color: var(--ink);
}

.manuscript-wall p {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 1.5vw, 1.35rem);
  line-height: 1.6;
  color: var(--ink);
  transition: color 0.3s ease;
}

.manuscript-card:hover p {
  color: #2a2418;
}

.manuscript-tag {
  display: inline-block;
  margin-top: 1.2rem;
  padding: 0.2rem 0.6rem;
  background: rgba(21, 17, 11, 0.08);
  color: rgba(21, 17, 11, 0.6);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: background 0.3s, color 0.3s, transform 0.3s var(--ease);
}

.manuscript-card:hover .manuscript-tag {
  background: rgba(215, 255, 73, 0.2);
  color: var(--ink);
  transform: translateY(-2px);
}

.manuscript-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 76rem;
  margin: 3rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(21, 17, 11, 0.1);
  color: rgba(21, 17, 11, 0.4);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  animation: manuscriptFooter 2s ease-in-out infinite;
}

@keyframes manuscriptFooter {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.manuscript-hint {
  opacity: 0.6;
  transition: opacity 0.3s ease;
}

.manuscript-footer:hover .manuscript-hint {
  opacity: 1;
}

.signal-board {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  position: relative;
}

.signal-board::before {
  content: "";
  position: absolute;
  top: -1rem;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

/* about page */
.about-profile {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 3rem;
  align-items: start;
}

.about-avatar {
  position: relative;
  width: 200px;
  height: 200px;
}

.about-avatar-ring {
  position: absolute;
  inset: 0;
  border: 2px solid var(--line);
  border-radius: 50%;
  animation: avatarPulse 4s ease-in-out infinite;
  transition: border-color 0.3s ease;
}

.about-avatar:hover .about-avatar-ring {
  border-color: rgba(215, 255, 73, 0.5);
}

@keyframes avatarPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.08); opacity: 0.7; }
}

.about-avatar-inner {
  position: absolute;
  inset: 8px;
  display: grid;
  place-items: center;
  background: var(--panel);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--acid);
  transition: transform 0.3s var(--ease), background 0.3s ease;
}

.about-avatar:hover .about-avatar-inner {
  transform: scale(1.05);
  background: var(--panel-strong);
}

.about-bio {
  display: grid;
  gap: 1.5rem;
}

.about-card {
  position: relative;
  padding: 1.5rem;
  border: 1px solid var(--line);
  background: var(--panel);
  opacity: 0;
  animation: aboutCardIn 0.6s calc(var(--delay) * 0.15s) forwards;
  overflow: hidden;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}

@keyframes aboutCardIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.about-card:hover {
  transform: translateY(-4px);
  background: var(--panel-strong);
}

.about-card--main {
  min-height: 12rem;
}

.about-card--main p {
  margin: 0.5rem 0 0;
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 1.5vw, 1.35rem);
  line-height: 1.7;
  color: var(--muted);
  transition: color 0.3s ease;
}

.about-card--main:hover p {
  color: var(--text);
}

.about-card-decoration {
  position: absolute;
  right: -2rem;
  bottom: -2rem;
  width: 8rem;
  height: 8rem;
  border: 1px solid rgba(215, 255, 73, 0.2);
  border-radius: 50%;
  pointer-events: none;
  transition: transform 0.6s var(--ease), border-color 0.3s ease;
}

.about-card--main:hover .about-card-decoration {
  transform: rotate(180deg) scale(1.1);
  border-color: rgba(215, 255, 73, 0.4);
}

.about-card-label {
  display: block;
  color: var(--acid);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  transition: transform 0.3s var(--ease);
}

.about-card:hover .about-card-label {
  transform: translateX(4px);
}

.about-card strong {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2vw, 1.8rem);
  line-height: 1.3;
  transition: color 0.3s ease;
}

.about-card:hover strong {
  color: var(--acid);
}

.about-card-icon {
  position: absolute;
  right: 1.5rem;
  top: 1.5rem;
  color: rgba(242, 234, 219, 0.1);
  font-family: var(--font-mono);
  font-size: 2rem;
  pointer-events: none;
  transition: color 0.3s ease, transform 0.3s var(--ease);
}

.about-card:hover .about-card-icon {
  color: rgba(215, 255, 73, 0.3);
  transform: rotate(10deg);
}

.about-card--highlight {
  border-color: rgba(215, 255, 73, 0.3);
  background: linear-gradient(135deg, var(--panel) 0%, rgba(215, 255, 73, 0.05) 100%);
  transition: transform 0.35s var(--ease), box-shadow 0.35s ease, border-color 0.35s ease;
}

.about-card--highlight:hover {
  box-shadow: 0 8px 24px rgba(215, 255, 73, 0.1);
  border-color: rgba(215, 255, 73, 0.5);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.about-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 76rem;
  margin: 3rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.about-status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.about-status-dot {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(115, 242, 167, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 4px rgba(115, 242, 167, 0); }
}

@media (max-width: 900px) {
  .about-profile {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }
}

.signal-link {
  min-height: 14rem;
  padding: 1.3rem;
  background: #070707;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), box-shadow 0.35s ease;
  position: relative;
  overflow: hidden;
}

.signal-link::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(215, 255, 73, 0.08), transparent);
  transition: left 0.6s var(--ease);
  pointer-events: none;
}

.signal-link:hover {
  transform: translateY(-6px);
  background: #0a0a0a;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.signal-link:hover::before {
  left: 100%;
}

.signal-link strong {
  display: block;
  margin-top: 4rem;
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.5vw, 2rem);
  transition: color 0.3s ease, transform 0.3s var(--ease);
}

.signal-link:hover strong {
  color: var(--acid);
  transform: translateX(4px);
}

/* ================================
   chat / archive printer
   ================================ */
.receipt-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}

.receipt-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.receipt-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(14px);
  transition: background 0.4s ease;
}

.receipt-overlay.open .receipt-backdrop {
  background: rgba(0, 0, 0, 0.85);
}

.receipt-unit {
  position: relative;
  width: min(28rem, calc(100vw - 2rem));
  animation: receiptFloat 8s ease-in-out infinite;
}

@keyframes receiptFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25% { transform: translateY(-6px) rotate(0.3deg); }
  50% { transform: translateY(0) rotate(0deg); }
  75% { transform: translateY(6px) rotate(-0.3deg); }
}

.printer-body {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.7rem;
  padding: 1rem;
  border: 1px solid #2a2924;
  background: #16150f;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.printer-body:hover {
  border-color: #3a3934;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.printer-slot {
  height: 0.8rem;
  background: #050505;
  position: relative;
  overflow: hidden;
}

.printer-slot::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
  animation: printerSlotShine 4s ease-in-out infinite;
}

@keyframes printerSlotShine {
  0%, 100% { left: -100%; }
  50% { left: 100%; }
}

.printer-led {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 16px var(--green);
  animation: ledPulse 2s ease-in-out infinite;
}

@keyframes ledPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 16px var(--green); }
  50% { opacity: 0.6; box-shadow: 0 0 8px var(--green); }
}

.printer-led.printing {
  background: var(--ember);
  box-shadow: 0 0 16px var(--ember);
  animation: ledPrinting 0.3s ease-in-out infinite;
}

@keyframes ledPrinting {
  0%, 100% { opacity: 1; box-shadow: 0 0 16px var(--ember); }
  50% { opacity: 0.4; box-shadow: 0 0 8px var(--ember); }
}

.printer-label {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  animation: printerLabel 3s ease-in-out infinite;
}

@keyframes printerLabel {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.receipt-paper {
  max-height: min(70vh, 42rem);
  overflow: auto;
  padding: 1.3rem;
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.45);
  position: relative;
}

.receipt-paper::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--ink) 0 10px,
    transparent 10px 14px
  );
  opacity: 0.6;
}

.receipt-paper::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--ink) 0 10px,
    transparent 10px 14px
  );
  opacity: 0.6;
}

.receipt-close {
  float: right;
  color: var(--ink);
  font-size: 1.4rem;
  transition: transform 0.3s var(--ease), color 0.2s;
}

.receipt-close:hover {
  transform: rotate(90deg);
  color: var(--ember);
}

.receipt-header {
  display: grid;
  gap: 0.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px dashed rgba(21, 17, 11, 0.4);
  font-family: var(--font-mono);
  text-align: center;
}

.receipt-header strong {
  animation: receiptTitle 2s ease-in-out infinite;
}

@keyframes receiptTitle {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

.receipt-header time {
  display: block;
  font-size: 0.7rem;
  color: var(--muted);
}

.receipt-header strong {
  font-family: var(--font-serif);
  font-size: 1.4rem;
}

.receipt-messages {
  display: grid;
  gap: 1rem;
  padding: 1rem 0;
}

.receipt-messages::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  height: 100%;
  width: 1px;
  background: repeating-linear-gradient(
    180deg,
    rgba(21, 17, 11, 0.1) 0 4px,
    transparent 4px 8px
  );
  transform: translateX(-50%);
  pointer-events: none;
}

.receipt-msg-label {
  margin-bottom: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--muted);
}

.receipt-msg--user .receipt-msg-label {
  color: var(--acid);
}

.receipt-msg-text {
  line-height: 1.7;
  white-space: pre-wrap;
  animation: receiptMsgIn 0.3s ease-out;
}

@keyframes receiptMsgIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.receipt-msg--user {
  text-align: right;
}

.receipt-msg--user .receipt-msg-text {
  display: inline-block;
  background: rgba(215, 255, 73, 0.1);
  padding: 0.5rem;
  border-radius: 2px;
}

.receipt-msg {
  position: relative;
}

.receipt-msg::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 2px;
  height: 100%;
  background: var(--ink);
  opacity: 0.2;
}

.receipt-msg--user::before {
  left: auto;
  right: 0;
}

.receipt-input-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px dashed rgba(21, 17, 11, 0.4);
  position: relative;
}

.receipt-input-row::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    rgba(21, 17, 11, 0.2) 0 4px,
    transparent 4px 8px
  );
}

.receipt-input,
.receipt-send {
  border: 1px solid rgba(21, 17, 11, 0.25);
  background: transparent;
  color: var(--ink);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.receipt-input:focus,
.receipt-send:focus {
  border-color: rgba(21, 17, 11, 0.5);
  outline: none;
  box-shadow: 0 0 0 2px rgba(21, 17, 11, 0.1);
}

.receipt-input {
  min-width: 0;
  padding: 0.75rem;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.receipt-input:focus {
  border-color: rgba(21, 17, 11, 0.5);
  box-shadow: 0 0 0 3px rgba(21, 17, 11, 0.08);
  background: rgba(255, 255, 255, 0.05);
}

.receipt-send {
  padding: 0.75rem 0.9rem;
  text-transform: uppercase;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}

.receipt-send:hover {
  background: rgba(21, 17, 11, 0.05);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* ================================
   transitions
   ================================ */
.page-transition-overlay {
  position: fixed;
  inset: 0;
  z-index: 950;
  display: none;
  overflow: hidden;
  background: #050505;
  backdrop-filter: blur(4px);
}

.pt-panel {
  position: absolute;
  inset-block: 0;
  width: 20%;
  background: var(--paper);
  transform: scaleY(0);
  transform-origin: bottom;
  will-change: transform;
}

.pt-panel:nth-child(1) { left: 0; }
.pt-panel:nth-child(2) { left: 20%; }
.pt-panel:nth-child(3) { left: 40%; }
.pt-panel:nth-child(4) { left: 60%; }
.pt-panel:nth-child(5) { left: 80%; }

.pt-label {
  position: absolute;
  left: 50%;
  top: 50%;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 6rem);
  opacity: 0;
  transform: translate(-50%, -50%);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* ================================
   responsive
   ================================ */
@media (max-width: 900px) {
  body {
    cursor: default;
  }

  button,
  a {
    cursor: pointer;
  }

  .cursor,
  .cursor-follower {
    display: none;
  }

  .nav {
    inset: 1rem 1rem auto;
  }

  .nav-links {
    flex: 1;
    max-width: calc(100vw - 5rem);
    flex-wrap: wrap;
    gap: 0.8rem;
    justify-content: flex-end;
  }

  .hero-kicker {
    display: none;
  }

  .about-layout,
  .thoughts-layout,
  .sound-room {
    grid-template-columns: 1fr;
  }

  .archive-strip,
  .world-grid,
  .signal-board {
    grid-template-columns: 1fr;
  }

  .world-card {
    min-height: 18rem;
  }

  .world-card strong {
    margin-top: 4rem;
  }

  .sub-grid,
  .photo-gallery,
  .manuscript-wall {
    grid-template-columns: 1fr;
  }

  .sub-grid .record-large,
  .photo-item--wide {
    grid-column: auto;
  }

  .photo-item--tall {
    grid-row: auto;
  }

  .photo-gallery {
    grid-auto-rows: 14rem;
  }

  .project-exhibit {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .section,
  .sub-page {
    padding-inline: 1rem;
  }

  .nav-link {
    font-size: 0.62rem;
  }

  .nav {
    align-items: start;
    mix-blend-mode: normal;
  }

  .nav-links {
    flex: initial;
    display: grid;
    grid-template-columns: repeat(2, max-content);
    gap: 0.35rem 0.75rem;
    position: absolute;
    left: 4.2rem;
    top: 0.1rem;
  }

  .section-title {
    font-size: clamp(1.8rem, 10vw, 3rem);
  }

  .hero-title {
    font-size: clamp(3rem, 16vw, 5rem);
  }

  .hero-subtitle {
    max-width: 20rem;
    font-size: 1rem;
  }

  .sub-hero h1,
  .contact-title {
    font-size: clamp(2.5rem, 14vw, 5rem);
  }

  .thought-tile:nth-child(2) {
    margin-left: 0;
  }
}

/* ================================
   large screen enhancements
   ================================ */
@media (min-width: 1200px) {
  .world-grid {
    gap: 2px;
  }

  .world-card {
    min-height: 32rem;
  }

  .about-layout {
    gap: 6rem;
  }

  .photo-gallery {
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 18rem;
  }
}

@media (min-width: 1440px) {
  .hero-title {
    font-size: clamp(5rem, 14vw, 14rem);
  }

  .section {
    padding: clamp(8rem, 14vw, 14rem) clamp(3rem, 6vw, 8rem);
  }

  .hero-circle--1 {
    width: 600px;
    height: 600px;
  }

  .hero-circle--2 {
    width: 450px;
    height: 450px;
  }

  .hero-circle--3 {
    width: 300px;
    height: 300px;
  }

  .photo-gallery {
    grid-template-columns: repeat(5, 1fr);
    grid-auto-rows: 20rem;
  }

  .manuscript-wall {
    grid-template-columns: repeat(4, 1fr);
  }
}