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

  body {
    background: #080b10;
    color: #e2e8f0;
    font-family: 'Sora', sans-serif;
    min-height: 100vh;
    padding: 2rem 1rem;
  }

  .container {
    max-width: 860px;
    margin: 0 auto;
    background: #0f1117;
    border-radius: 20px;
    padding: 2.5rem 2rem;
    border: 1px solid #1e2533;
  }

  /* ── HEADER ── */
  .header-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: #3b82f6;
    letter-spacing: .12em;
    margin-bottom: 8px;
  }

  h1 {
    font-size: 32px;
    font-weight: 700;
    color: #f8fafc;
    letter-spacing: -1px;
    margin-bottom: 6px;
  }

  .main-subtitle {
    font-size: 13px;
    color: #475569;
    font-weight: 300;
    margin-bottom: 2.5rem;
    line-height: 1.6;
  }

  /* ── NAV INDEX ── */
  .nav-index {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(22, 27, 39, 0.9));
    border: 1px solid #1e2d3d;
    border-radius: 14px;
    padding: 16px 18px;
    margin-bottom: 2.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    backdrop-filter: blur(12px);
    position: sticky;
    top: 12px;
    z-index: 100;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  }

  .nav-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 9px;
    color: #475569;
    letter-spacing: .16em;
    text-transform: uppercase;
    width: 100%;
    margin-bottom: 6px;
  }

  .nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    text-decoration: none;
    border: 1px solid transparent;
    transition: all 0.25s ease;
    position: relative;
  }

  .nav-link:hover {
    background: rgba(59, 130, 246, 0.08);
    border-color: #1e3a5f;
    transform: translateY(-1px);
  }

  .nav-link.active {
    background: rgba(59, 130, 246, 0.12);
    border-color: #3b82f6;
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.15);
  }

  .nav-link.active .nav-num {
    color: #3b82f6;
  }

  .nav-link.active .nav-text {
    color: #e2e8f0;
  }

  .nav-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 600;
    color: #334155;
    transition: color 0.25s ease;
  }

  .nav-text {
    font-size: 11.5px;
    font-weight: 500;
    color: #64748b;
    transition: color 0.25s ease;
    white-space: nowrap;
  }

  .nav-link:hover .nav-num {
    color: #7db8f7;
  }

  .nav-link:hover .nav-text {
    color: #cbd5e1;
  }

  /* ── SECTIONS ── */
  .section { margin-bottom: 2.2rem; scroll-margin-top: 100px; }

  .sec-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .16em;
    text-transform: uppercase;
    color: #475569;
    margin-bottom: 1.1rem;
    padding-bottom: 6px;
    border-bottom: 1px solid #1e2533;
  }

  /* ── CARDS ── */
  .card {
    background: #161b27;
    border: 1px solid #1e2d3d;
    border-radius: 12px;
    padding: 1rem 1.25rem;
    margin-bottom: 10px;
  }

  .card-title {
    font-size: 13px;
    font-weight: 600;
    color: #cbd5e1;
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .card-desc {
    font-size: 12.5px;
    color: #64748b;
    line-height: 1.75;
  }

  .card-desc p { margin-bottom: 6px; }
  .card-desc p:last-child { margin-bottom: 0; }

  /* ── DOTS ── */
  .dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
  .db  { background: #3b82f6; }
  .dp  { background: #a78bfa; }
  .dt  { background: #2dd4bf; }
  .da  { background: #fbbf24; }
  .dc  { background: #f87171; }
  .dg  { background: #34d399; }
  .dpi { background: #f472b6; }
  .dgy { background: #94a3b8; }

  /* ── CODE BLOCKS ── */
  .cb {
    background: #0d1117;
    border: 1px solid #21262d;
    border-radius: 10px;
    padding: 1rem 1.25rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12.5px;
    line-height: 2;
    overflow-x: auto;
    margin-top: 8px;
    color: #c9d1d9;
    white-space: pre;
  }

  .kw  { color: #ff79c6; }
  .str { color: #f1fa8c; }
  .cm  { color: #44475a; font-style: italic; }
  .cl  { color: #8be9fd; }
  .fn  { color: #50fa7b; }
  .num { color: #bd93f9; }
  .op  { color: #ff79c6; }
  .ann { color: #50fa7b; font-style: italic; }

  /* ── BADGES ── */
  .badge {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: .12em;
    padding: 3px 10px;
    border-radius: 100px;
    text-transform: uppercase;
    margin-bottom: 8px;
  }

  .bb  { background: #1e3a5f; color: #7db8f7; }
  .bp  { background: #2a1f4e; color: #b39dfa; }
  .bt  { background: #0d3530; color: #4ecdc4; }
  .ba  { background: #3b2a0a; color: #fbbf24; }
  .bc  { background: #3b1812; color: #f87171; }
  .bg  { background: #0f2d1a; color: #6ee7b7; }
  .bpi { background: #3b1828; color: #f9a8d4; }
  .bgy { background: #1e2533; color: #94a3b8; }

  /* ── PILLS ── */
  .pill-grid { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 4px; margin-bottom: 14px; }

  .pill {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 6px;
    border: 1px solid;
    cursor: default;
  }

  .plb  { background: #0d1f36; border-color: #1e3a5f; color: #7db8f7; }
  .plp  { background: #1a1030; border-color: #2a1f4e; color: #c4b5fd; }
  .plt  { background: #061f1e; border-color: #0d3530; color: #5eead4; }
  .pla  { background: #1f1500; border-color: #3b2a0a; color: #fcd34d; }
  .plc  { background: #1f0c08; border-color: #3b1812; color: #fca5a5; }
  .plg  { background: #061810; border-color: #0f2d1a; color: #6ee7b7; }
  .plpi { background: #1f0814; border-color: #3b1828; color: #f9a8d4; }
  .plgy { background: #131720; border-color: #2a3040; color: #94a3b8; }

  /* ── GRID LAYOUTS ── */
  .twocol { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .threecol { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }

  /* ── SCOPE / ACCENT CARDS ── */
  .scope-card {
    border-left: 3px solid;
    padding: 10px 14px;
    border-radius: 0 10px 10px 0;
    margin-bottom: 8px;
    background: #0d1117;
  }

  .scope-title { font-size: 13px; font-weight: 600; margin-bottom: 3px; }
  .scope-desc  { font-size: 12px; color: #64748b; line-height: 1.6; }

  /* ── TABLE ── */
  .data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12.5px;
    margin-top: 8px;
  }

  .data-table th {
    text-align: left;
    padding: 8px 12px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: #475569;
    border-bottom: 1px solid #1e2533;
  }

  .data-table td {
    padding: 9px 12px;
    border-bottom: 1px solid #131820;
    color: #94a3b8;
    vertical-align: top;
    line-height: 1.5;
  }

  .data-table tr:last-child td { border-bottom: none; }
  .data-table tr:hover td { background: #161b27; }

  .data-table .kw-cell {
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: #8be9fd;
    white-space: nowrap;
  }

  /* ── ARRAY VIZ ── */
  .array-viz { display: flex; gap: 3px; margin: 14px 0 6px; }

  .array-cell {
    flex: 1;
    background: #0d1117;
    border: 1px solid #1e2533;
    border-radius: 8px;
    text-align: center;
    padding: 10px 4px 6px;
  }

  .array-cell.hl { border-color: #3b82f6; background: #0d1f36; }
  .array-cell.hl2 { border-color: #a78bfa; background: #1a1030; }

  .array-idx { font-family: 'JetBrains Mono', monospace; font-size: 9px; color: #475569; margin-bottom: 5px; }
  .array-val { font-family: 'JetBrains Mono', monospace; font-size: 13px; font-weight: 600; color: #7db8f7; }
  .array-cell.hl .array-val  { color: #93c5fd; }
  .array-cell.hl2 .array-val { color: #c4b5fd; }

  /* ── RULE ROWS ── */
  .rr { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 8px; font-size: 12.5px; color: #94a3b8; line-height: 1.6; }
  .ri { color: #2dd4bf; font-size: 15px; flex-shrink: 0; margin-top: 1px; }
  .ri-warn { color: #f87171; font-size: 15px; flex-shrink: 0; margin-top: 1px; }

  /* ── EXCEPTION BOXES ── */
  .exc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 10px; }

  .exc-box {
    border: 1px solid #1e2d3d;
    border-radius: 10px;
    padding: 12px 14px;
  }

  .exc-title { font-size: 12px; font-weight: 600; color: #f9a8d4; margin-bottom: 4px; font-family: 'JetBrains Mono', monospace; }
  .exc-desc  { font-size: 12px; color: #64748b; line-height: 1.5; }

  /* ── INFOBOX ── */
  .infobox {
    background: #0d1f36;
    border: 1px solid #1e3a5f;
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 12.5px;
    color: #7db8f7;
    line-height: 1.7;
    margin-top: 10px;
  }

  .infobox strong { color: #93c5fd; font-weight: 600; }

  /* ── DIVIDER ── */
  .div { height: 1px; background: #1e2533; margin: 2rem 0; }

  /* ── INLINE CODE ── */
  code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11.5px;
    background: #161b27;
    padding: 1px 6px;
    border-radius: 4px;
    border: 1px solid #1e2d3d;
  }

  /* ── FOOTER ── */
  .footer {
    text-align: center;
    padding-top: 1.5rem;
    font-size: 10px;
    color: #334155;
    letter-spacing: .12em;
    text-transform: uppercase;
    border-top: 1px solid #1e2533;
    margin-top: 2rem;
  }

  /* ── RESPONSIVE ── */
  @media (max-width: 620px) {
    .twocol, .threecol, .exc-grid { grid-template-columns: 1fr; }
    h1 { font-size: 24px; }
    .container { padding: 1.5rem 1rem; }
    .cb { font-size: 11px; }
    .nav-index {
      padding: 12px 14px;
      gap: 4px;
      top: 0;
      border-radius: 0 0 14px 14px;
      flex-wrap: nowrap;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }
    .nav-link { padding: 5px 8px; }
    .nav-text { font-size: 10px; }
    .section { scroll-margin-top: 80px; }
  }