:root {
    --black: #050505;
    --white: #f0ede6;
    --cyan: #00f5d4;
    --yellow: #f5c518;
    --red: #ff2d55;
    --mid: #1a1a1a;
    --border: #2a2a2a;
    --muted: #666;
    --body-font: 'DM Sans', sans-serif;
    --mono-font: 'Share Tech Mono', monospace;
    --display-font: 'Bebas Neue', sans-serif;
  }

  * { margin: 0; padding: 0; box-sizing: border-box; }

  body {
    background: var(--black);
    color: var(--white);
    font-family: var(--body-font);
    font-size: 17px;
    line-height: 1.75;
    font-weight: 300;
  }

  /* Scanline overlay */
  body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0,0,0,0.06) 2px,
      rgba(0,0,0,0.06) 4px
    );
    pointer-events: none;
    z-index: 1000;
  }

  /* Header */
  .masthead {
    border-bottom: 1px solid var(--cyan);
    padding: 3rem 4rem 2rem;
    position: relative;
    overflow: hidden;
  }

  .masthead::after {
    content: 'HOMO SYMBIOTICUS SERIES';
    position: absolute;
    right: 4rem;
    top: 2rem;
    font-family: var(--mono-font);
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 4px;
  }

  .doc-type {
    font-family: var(--mono-font);
    font-size: 11px;
    color: var(--cyan);
    letter-spacing: 6px;
    margin-bottom: 1rem;
  }

  h1 {
    font-family: var(--display-font);
    font-size: clamp(3rem, 8vw, 7rem);
    line-height: 0.9;
    color: var(--white);
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
  }

  h1 span {
    color: var(--cyan);
  }

  .subtitle {
    font-family: var(--mono-font);
    font-size: 14px;
    color: var(--yellow);
    letter-spacing: 2px;
    margin-top: 1rem;
    margin-bottom: 2rem;
  }

  .meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
  }

  .meta-item label {
    font-family: var(--mono-font);
    font-size: 10px;
    color: var(--muted);
    letter-spacing: 3px;
    display: block;
    margin-bottom: 4px;
  }

  .meta-item span {
    font-family: var(--mono-font);
    font-size: 13px;
    color: var(--white);
  }

  /* BPM display */
  .bpm-display {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 1.5rem 4rem;
    background: var(--mid);
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
  }

  .bpm-block {
    display: flex;
    align-items: baseline;
    gap: 6px;
    white-space: nowrap;
  }

  .bpm-num {
    font-family: var(--display-font);
    font-size: 2.5rem;
    color: var(--cyan);
    line-height: 1;
  }

  .bpm-label {
    font-family: var(--mono-font);
    font-size: 10px;
    color: var(--muted);
    letter-spacing: 3px;
  }

  .bpm-arrow {
    font-family: var(--display-font);
    font-size: 2rem;
    color: var(--border);
  }

  .key-badge {
    font-family: var(--display-font);
    font-size: 2.5rem;
    color: var(--yellow);
    line-height: 1;
  }

  .divider {
    width: 1px;
    height: 40px;
    background: var(--border);
    flex-shrink: 0;
  }

  /* Main layout */
  .content {
    max-width: 820px;
    margin: 0 auto;
    padding: 4rem;
  }

  /* Section headers */
  h2 {
    font-family: var(--display-font);
    font-size: 2.2rem;
    color: var(--white);
    letter-spacing: 3px;
    margin: 4rem 0 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
    position: relative;
  }

  h2::before {
    content: attr(data-num);
    font-family: var(--mono-font);
    font-size: 11px;
    color: var(--cyan);
    letter-spacing: 3px;
    position: absolute;
    top: -1.5rem;
    left: 0;
  }

  h3 {
    font-family: var(--mono-font);
    font-size: 13px;
    color: var(--cyan);
    letter-spacing: 4px;
    margin: 2.5rem 0 1rem;
  }

  p {
    margin-bottom: 1.25rem;
    color: #c8c4bb;
  }

  em {
    color: var(--yellow);
    font-style: normal;
  }

  strong {
    color: var(--white);
    font-weight: 500;
  }

  /* Abstract box */
  .abstract {
    background: var(--mid);
    border-left: 3px solid var(--cyan);
    padding: 2rem;
    margin: 2rem 0 3rem;
    font-size: 15px;
    line-height: 1.8;
    color: #b0aca3;
  }

  .abstract-label {
    font-family: var(--mono-font);
    font-size: 10px;
    color: var(--cyan);
    letter-spacing: 5px;
    margin-bottom: 1rem;
    display: block;
  }

  /* Lyric sections */
  .lyrics-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
  }

  @media (max-width: 700px) {
    .lyrics-container { grid-template-columns: 1fr; }
  }

  .lyrics-block {
    background: var(--mid);
    border: 1px solid var(--border);
    padding: 2rem;
    position: relative;
  }

  .lyrics-block::before {
    content: attr(data-lang);
    position: absolute;
    top: -1px;
    right: 0;
    font-family: var(--mono-font);
    font-size: 9px;
    letter-spacing: 4px;
    padding: 4px 12px;
    background: var(--cyan);
    color: var(--black);
  }

  .lyrics-title {
    font-family: var(--display-font);
    font-size: 1.8rem;
    color: var(--white);
    letter-spacing: 3px;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border);
  }

  .verse {
    font-family: var(--mono-font);
    font-size: 12.5px;
    line-height: 2;
    color: #a0a090;
    margin-bottom: 1.5rem;
  }

  .verse-highlight {
    color: var(--yellow);
  }

  .drop-line {
    font-family: var(--mono-font);
    font-size: 13px;
    color: var(--red);
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    font-style: italic;
    line-height: 1.6;
  }

  /* Novelty list */
  .novelty-list {
    list-style: none;
    margin: 1.5rem 0;
  }

  .novelty-list li {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    color: #c8c4bb;
  }

  .novelty-list li:last-child { border-bottom: none; }

  .novelty-num {
    font-family: var(--display-font);
    font-size: 2rem;
    color: var(--cyan);
    line-height: 1;
    opacity: 0.4;
    flex-shrink: 0;
    width: 2rem;
    text-align: right;
  }

  .novelty-content strong {
    display: block;
    margin-bottom: 4px;
  }

  /* Authorship table */
  .authorship {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px;
    margin: 2rem 0;
  }

  .author-col {
    background: var(--mid);
    padding: 1.5rem;
    border: 1px solid var(--border);
  }

  .author-col h4 {
    font-family: var(--display-font);
    font-size: 1.4rem;
    color: var(--yellow);
    letter-spacing: 2px;
    margin-bottom: 1rem;
  }

  .author-col ul {
    list-style: none;
    font-family: var(--mono-font);
    font-size: 12px;
    color: #888;
    line-height: 2;
  }

  .author-col ul li::before {
    content: '→ ';
    color: var(--cyan);
  }

  /* Closing line featured */
  .closing-line {
    margin: 3rem 0;
    padding: 3rem;
    border: 1px solid var(--cyan);
    text-align: center;
    position: relative;
  }

  .closing-line::before {
    content: 'CLOSING LINE';
    position: absolute;
    top: -1px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--mono-font);
    font-size: 9px;
    letter-spacing: 4px;
    background: var(--black);
    padding: 0 1rem;
    color: var(--cyan);
  }

  .closing-line p {
    font-family: var(--display-font);
    font-size: clamp(1.4rem, 4vw, 2.2rem);
    color: var(--white);
    letter-spacing: 2px;
    line-height: 1.3;
    margin: 0;
  }

  .closing-line p span {
    color: var(--red);
  }

  /* References */
  .refs {
    list-style: none;
    margin: 1.5rem 0;
  }

  .refs li {
    font-family: var(--mono-font);
    font-size: 12px;
    color: #666;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
    line-height: 1.6;
  }

  .refs li::before {
    content: '— ';
    color: var(--border);
  }

  .refs li a {
    color: var(--cyan);
    text-decoration: none;
  }

  .refs li span.highlight {
    color: var(--yellow);
  }

  .refs li span.vaswani {
    color: var(--red);
  }

  /* Footer */
  .footer {
    margin-top: 5rem;
    padding: 2rem 4rem;
    border-top: 1px solid var(--cyan);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
  }

  .footer-left {
    font-family: var(--mono-font);
    font-size: 11px;
    color: var(--muted);
    line-height: 2;
  }

  .footer-right {
    font-family: var(--display-font);
    font-size: 1.2rem;
    color: var(--border);
    letter-spacing: 3px;
  }

  .license {
    font-family: var(--mono-font);
    font-size: 10px;
    color: var(--muted);
    background: var(--mid);
    padding: 3px 8px;
    display: inline-block;
    margin-top: 4px;
  }

  /* Archive notice */
  .archive-notice {
    background: rgba(245, 197, 24, 0.05);
    border: 1px solid rgba(245, 197, 24, 0.2);
    padding: 1.5rem 2rem;
    margin: 3rem 0;
    font-family: var(--mono-font);
    font-size: 12px;
    color: #888;
    line-height: 2;
  }

  .archive-notice::before {
    content: '// ARCHIVE STATUS';
    display: block;
    color: var(--yellow);
    margin-bottom: 0.5rem;
    font-size: 10px;
    letter-spacing: 4px;
  }

  /* Ticker animation */
  @keyframes ticker {
    0% { transform: translateX(100%); }
    100% { transform: translateX(-100%); }
  }

  .ticker-wrap {
    overflow: hidden;
    background: var(--cyan);
    padding: 6px 0;
    white-space: nowrap;
  }

  .ticker-inner {
    display: inline-block;
    animation: ticker 30s linear infinite;
    font-family: var(--mono-font);
    font-size: 11px;
    color: var(--black);
    letter-spacing: 4px;
  }

  /* Token stream decorative */
  .token-stream {
    font-family: var(--mono-font);
    font-size: 10px;
    color: var(--border);
    letter-spacing: 2px;
    line-height: 2;
    margin: 1rem 0;
    word-break: break-all;
  }

  .token-stream span { color: var(--cyan); opacity: 0.4; }