:root {
  color-scheme: dark;
  --bg: #05080a;
  --panel: rgba(9, 15, 18, 0.82);
  --panel-strong: rgba(13, 20, 24, 0.94);
  --line: rgba(212, 180, 126, 0.22);
  --line-blue: rgba(127, 171, 185, 0.22);
  --text: #f0eadf;
  --muted: #a6aaa8;
  --dim: #6f7778;
  --gold: #d6a965;
  --amber: #ffca76;
  --blue: #8fb9c9;
  --shadow: 0 22px 90px rgba(0, 0, 0, 0.55);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 50% 0%, rgba(133, 177, 190, 0.18), transparent 32rem),
    radial-gradient(circle at 85% 20%, rgba(226, 163, 76, 0.12), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent 90%);
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

button {
  font: inherit;
}

.boot-screen {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #030506;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.boot-screen.dismissed {
  opacity: 0;
  visibility: hidden;
}

.boot-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.48;
}

.boot-shade {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(7, 12, 15, 0.35), rgba(2, 4, 5, 0.9));
}

.boot-content {
  position: relative;
  width: min(90vw, 820px);
  padding: 44px;
  text-align: center;
  border: 1px solid var(--line);
  background: rgba(5, 9, 11, 0.72);
  box-shadow: var(--shadow);
}

.boot-content h1,
.hero h2,
.section-heading h2,
.final-section h2 {
  margin: 0;
  font-family: "JetBrains Mono", monospace;
  letter-spacing: 0;
  text-transform: uppercase;
}

.boot-content h1 {
  font-size: clamp(2.4rem, 8vw, 7rem);
}

.boot-copy {
  margin: 18px auto 28px;
  color: var(--muted);
  max-width: 34rem;
}

.system-line,
.kicker {
  margin: 0 0 12px;
  color: var(--gold);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0;
  text-transform: uppercase;
}

.enter-button,
.primary-action,
.ghost-action,
.icon-button,
.media-tile,
.track-button {
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(8, 13, 15, 0.76);
}

.enter-button,
.primary-action {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 44px;
  padding: 0 22px;
  cursor: pointer;
  background: linear-gradient(135deg, rgba(214, 169, 101, 0.92), rgba(89, 61, 34, 0.9));
  color: #120e09;
  font-weight: 800;
  text-transform: uppercase;
}

.ghost-action,
.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  color: var(--gold);
  cursor: pointer;
}

.peek-link {
  position: absolute;
  right: 24px;
  bottom: 22px;
  color: var(--muted);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.82rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 72px;
  padding: 0 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(4, 7, 9, 0.82);
  backdrop-filter: blur(18px);
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
}

.brand-cluster {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.mark-pulse {
  width: 12px;
  height: 12px;
  border: 1px solid var(--gold);
  box-shadow: 0 0 20px rgba(255, 202, 118, 0.7);
}

.chapter-link {
  padding-left: 14px;
  border-left: 1px solid rgba(214, 169, 101, 0.28);
  color: var(--gold);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  line-height: 1.35;
  text-transform: uppercase;
}

.chapter-link:hover {
  color: var(--text);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  color: var(--muted);
  font-size: 0.88rem;
}

main {
  display: grid;
  gap: 82px;
  padding-bottom: 70px;
}

section {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  width: 100%;
  min-height: calc(100vh - 72px);
  display: grid;
  align-items: end;
  padding: 42px;
  position: relative;
  overflow: hidden;
}

.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.66;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(2, 5, 6, 0.96), rgba(2, 5, 6, 0.28) 62%, rgba(2, 5, 6, 0.74));
}

.hero-panel {
  position: relative;
  z-index: 1;
  width: min(680px, 100%);
  padding-bottom: 10vh;
}

.hero h2 {
  font-size: clamp(3rem, 10vw, 8rem);
  line-height: 0.92;
}

.hero p {
  color: var(--muted);
  max-width: 42rem;
  font-size: 1.08rem;
  line-height: 1.7;
}

.hero-actions,
.track-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.thesis-band {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.thesis-band p {
  margin: 0;
  padding: 22px;
  background: rgba(7, 12, 15, 0.86);
  color: var(--gold);
  text-align: center;
  font-family: "JetBrains Mono", monospace;
}

.section-heading {
  margin-bottom: 22px;
}

.section-heading h2 {
  font-size: clamp(2rem, 5vw, 4rem);
}

.intro-shell,
.about-shell,
.playlist-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
  gap: 18px;
}

.intro-copy,
.research-card,
.about-main,
.about-notes,
.about-shell blockquote,
.playlist-copy,
.notes-grid article,
.fragment-grid figure {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.intro-copy,
.research-card,
.about-main,
.about-notes,
.about-shell blockquote,
.playlist-copy {
  padding: 28px;
}

.intro-copy h3,
.about-main h3,
.playlist-copy h3,
.notes-grid h3 {
  margin: 0 0 12px;
  font-size: 1.45rem;
}

.intro-copy p,
.research-card p,
.about-main p,
.playlist-copy p,
.notes-grid p,
.fragment-grid blockquote {
  color: var(--muted);
  line-height: 1.7;
}

.about-notes {
  display: grid;
  gap: 10px;
}

.about-notes p {
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--gold);
  font-family: "JetBrains Mono", monospace;
}

.about-shell blockquote {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--text);
  font-size: clamp(1.3rem, 3vw, 2.2rem);
  line-height: 1.35;
}

.track-console {
  display: grid;
  grid-template-columns: 330px minmax(0, 1fr);
  gap: 18px;
}

.track-list,
.track-detail {
  border: 1px solid var(--line);
  background: var(--panel-strong);
  box-shadow: var(--shadow);
}

.track-list {
  padding: 12px;
  max-height: 760px;
  overflow: auto;
}

.track-button {
  width: 100%;
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 12px;
  align-items: center;
  padding: 13px;
  margin-bottom: 8px;
  text-align: left;
  cursor: pointer;
}

.track-button.active {
  border-color: rgba(255, 202, 118, 0.72);
  background: rgba(214, 169, 101, 0.12);
}

.track-button > span:first-child {
  color: var(--gold);
  font-family: "JetBrains Mono", monospace;
}

.track-button strong,
.track-button small {
  display: block;
}

.track-button small {
  margin-top: 4px;
  color: var(--dim);
}

.track-detail {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1.1fr);
  min-height: 720px;
}

.detail-media {
  position: relative;
  min-height: 420px;
  overflow: hidden;
}

.detail-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(4, 7, 9, 0.88), transparent 42%);
}

.track-status {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--gold);
  font-family: "JetBrains Mono", monospace;
}

.detail-copy {
  padding: 26px;
  display: grid;
  align-content: start;
  gap: 18px;
}

.detail-copy h3 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4.4rem);
  line-height: 0.95;
}

.track-meaning {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.audio-panel,
.system-log,
.signal-note,
.lyrics {
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: rgba(0, 0, 0, 0.22);
}

.audio-panel {
  padding: 16px;
}

.audio-topline {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--dim);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
}

audio {
  width: 100%;
  margin: 14px 0;
}

.system-log {
  padding: 14px;
  color: var(--blue);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.83rem;
  line-height: 1.7;
}

.signal-note {
  padding: 16px;
}

.signal-note p:last-child {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.lyrics {
  min-height: 260px;
  max-height: 460px;
  overflow: auto;
  margin: 0;
  padding: 18px;
  color: #d8d0c2;
  font-family: "JetBrains Mono", monospace;
  line-height: 1.75;
  white-space: pre-wrap;
}

.notes-grid,
.fragment-grid,
.media-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.notes-grid article {
  padding: 22px;
}

.notes-grid span {
  color: var(--gold);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
}

.playlist-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  background: #000;
}

.playlist-frame iframe,
.playlist-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.playlist-fallback {
  display: none;
  place-items: center;
  text-align: center;
  padding: 24px;
  background: var(--panel-strong);
}

.playlist-fallback.visible {
  display: grid;
}

.fragment-grid figure {
  margin: 0;
  padding: 22px;
}

.fragment-grid blockquote {
  margin: 0;
}

.fragment-grid figcaption {
  margin-top: 18px;
  color: var(--gold);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
}

.media-grid {
  grid-template-columns: repeat(5, 1fr);
}

.media-tile {
  padding: 0;
  cursor: pointer;
  overflow: hidden;
  text-align: left;
}

.media-tile img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.media-tile span {
  display: block;
  padding: 12px;
  color: var(--muted);
  font-size: 0.82rem;
}

.final-section {
  text-align: center;
  padding: 70px 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.final-section h2 {
  color: var(--gold);
  font-size: clamp(2rem, 6vw, 5rem);
}

.final-section p {
  color: var(--muted);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto 32px;
  color: var(--dim);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.8rem;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: none;
  place-items: center;
  padding: 28px;
  background: rgba(0, 0, 0, 0.86);
}

.lightbox.open {
  display: grid;
}

.lightbox img {
  max-height: 82vh;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.lightbox-close {
  position: fixed;
  top: 18px;
  right: 18px;
  min-height: 40px;
  padding: 0 16px;
  color: var(--gold);
  border: 1px solid var(--line);
  background: var(--panel-strong);
  cursor: pointer;
}

#lightboxTitle {
  color: var(--muted);
  font-family: "JetBrains Mono", monospace;
}

@media (max-width: 980px) {
  .site-header,
  footer {
    align-items: flex-start;
    flex-direction: column;
    padding: 18px;
  }

  .brand-cluster {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .chapter-link {
    padding-left: 0;
    border-left: 0;
  }

  .hero {
    min-height: 780px;
    padding: 24px;
  }

  .thesis-band,
  .intro-shell,
  .about-shell,
  .playlist-shell,
  .track-console,
  .track-detail {
    grid-template-columns: 1fr;
  }

  .notes-grid,
  .fragment-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .media-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 620px) {
  .boot-content {
    padding: 28px 18px;
  }

  .hero h2 {
    font-size: 2.8rem;
  }

  .thesis-band,
  .notes-grid,
  .fragment-grid,
  .media-grid {
    grid-template-columns: 1fr;
  }

  .detail-copy {
    padding: 18px;
  }
}