:root {
      /* === Core CavBot palette === */
      --navy-950: #01030f;
      --navy-900: #020616;
      --navy-800: #050a1b;

      --lime: #b9c85a;         /* Electric Lime primary */
      --lime-soft: rgba(185, 200, 90, 0.14);
      --lime-soft-strong: rgba(185, 200, 90, 0.22);

      --violet: #8b5cff;       /* Hyper Violet secondary */
      --violet-soft: rgba(139, 92, 255, 0.2);
      --violet-border-soft: rgba(139, 92, 255, 0.45);

      --blue: #4ea8ff;
      --blue-soft: rgba(78, 168, 255, 0.85);

      --ink: #f7fbff;
      --ink-soft: #c5cee7;
      --ink-subtle: #8890aa;
      --border-subtle: rgba(255, 255, 255, 0.08);

      --panel-radius-xl: 26px; /*  added (used by epub modal) */
      --panel-radius-lg: 20px;
      --panel-radius-md: 16px;
      --panel-radius-sm: 12px;

      /* Unified typeface: Inter everywhere */
      --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
      --font-display: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

      --space-xxl: 80px;
      --space-xl: 56px;
      --space-lg: 40px;
      --space-md: 28px;
      --space-sm: 18px;
      --space-xs: 10px;

      /* (you referenced var(--shadow-strong) in a few places; define it so nothing collapses) */
      --shadow-strong: 0 18px 70px rgba(0,0,0,0.55);
    }

    *, *::before, *::after { box-sizing: border-box; }

    html { scroll-behavior: smooth; }

    /*  lock background scroll when modal opens */
    html.modal-lock,
    body.modal-lock{
      overflow: hidden !important;
      height: 100%;
      overscroll-behavior: none;
      touch-action: none;
    }

    body {
      overscroll-behavior: none;
      margin: 0;
      min-height: 100vh;
      font-family: var(--font-sans);
      color: var(--ink-soft);
      background: radial-gradient(circle at top, #071025 0, var(--navy-900) 32%, var(--navy-950) 100%);
      -webkit-font-smoothing: antialiased;
      text-rendering: geometricPrecision;
    }

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

    .page-shell{
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      opacity: 0;
      animation: pageFadeIn 340ms ease-out forwards;
    }

    .page-inner{
      max-width: 1160px;
      margin: 0 auto;
      padding: var(--space-xl) 20px var(--space-xxl);
      display: flex;
      flex-direction: column;
      gap: var(--space-xxl);
      width: 100%;
      min-width: 0;
    }

    @keyframes pageFadeIn{
      0%{ opacity: 0; transform: translateY(4px); }
      100%{ opacity: 1; transform: translateY(0); }
    }

    @media (prefers-reduced-motion: reduce){
      html { scroll-behavior: auto; }
      .page-shell{ animation: none; opacity: 1; }
    }

    /* ==============================
       SHARED PANEL STYLES
       ============================== */

    .section{ width: 100%; padding-top: var(--space-xxl); }

    .section-header{
      display:flex;
      flex-direction:column;
      gap: 12px;
      max-width: 58rem;
      margin:0 0 calc(var(--space-md) + 2px) 0;
      position:relative;
      z-index: 1;
      min-width: 0;
    }

    .eyebrow{
      font-size:11px;
      text-transform: uppercase;
      letter-spacing: 0.2em;
      color: var(--ink-subtle);
      line-height: 1.25;
    }

    .section-title{
      margin:0;
      font-size: 20px;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: var(--ink);
      line-height: 1.25;
      font-family: var(--font-display);
    }

    .section-body{
      margin:0;
      font-size: 14px;
      color: var(--ink-soft);
      line-height: 2.0;
      max-width: 56rem;
      text-align: left;
    }

    .code-block{
      margin: 10px 0 4px;
      padding: 10px 12px;
      border-radius: 10px;
      border: 1px solid rgba(255, 255, 255, 0.14);
      background: rgba(1, 3, 15, 0.96);
      font-family: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
      font-size: 11px;
      line-height: 1.7;
      overflow-x: auto;
      color: var(--ink);
    }

    .code-inline{
      font-family: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
      font-size: 11px;
      background: rgba(1, 3, 15, 0.9);
      border-radius: 4px;
      padding: 0 4px;
      border: 1px solid rgba(255, 255, 255, 0.12);
      white-space: normal;
      overflow-wrap: anywhere;
    }

    /* Ambient layer — FAINT (removes “grey dots/noses” problem) */
    .ambient{
      position:absolute;
      inset: 0;
      pointer-events:none;
      z-index: 0;
      overflow:hidden;
      opacity: .35;
      filter: blur(.2px);
    }
    .beacon{
      position:absolute;
      width: 10px; height: 10px;
      border-radius: 999px;
      background: radial-gradient(circle at 35% 35%, rgba(247,251,255,0.55), rgba(247,251,255,0.04));
      box-shadow: 0 0 0 1px rgba(255,255,255,0.06), 0 0 16px rgba(139,92,255,0.10);
      opacity: 0.20;
      transform: translateZ(0);
    }
    .beacon::after{
      content:"";
      position:absolute;
      inset:-18px;
      border-radius: 999px;
      background: radial-gradient(circle, rgba(139,92,255,0.10), transparent 62%);
      opacity: 0.22;
      animation: beaconPulse 3.2s ease-in-out infinite;
    }
    .beacon.lime::after{ background: radial-gradient(circle, rgba(185,200,90,0.10), transparent 62%); }
    .beacon.ice::after{ background: radial-gradient(circle, rgba(155,231,255,0.10), transparent 62%); }
    @keyframes beaconPulse{
      0%, 100%{ transform: scale(0.86); opacity: 0.18; }
      50%{ transform: scale(1); opacity: 0.32; }
    }
    @media (prefers-reduced-motion: reduce){
      .beacon::after{ animation:none; opacity: 0.18; }
    }

    /* Hide the “mini-bot faces” entirely (these were reading as grey noses) */
    .mini-bot{ display:none !important; }

    /* Buttons */
    .btn{
      border-radius: 999px;
      border: 1px solid transparent;
      padding: 11px 18px;
      font-size: 11px;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      cursor: pointer;
      display: inline-flex;
      align-items:center;
      justify-content:center;
      gap: 8px;
      background: transparent;
      color: var(--ink);
      transition: transform .12s ease, border-color .18s ease, background .18s ease, box-shadow .18s ease, opacity .18s ease;
      white-space: nowrap;
      max-width: 100%;
      overflow: hidden;
      text-overflow: ellipsis;
      user-select:none;
      -webkit-tap-highlight-color: transparent;
    }
    .btn:focus-visible{
      outline: none;
      box-shadow: 0 0 0 3px rgba(139,92,255,0.25), 0 0 0 1px rgba(185,200,90,0.25);
    }
    .btn-primary{
      background:
        radial-gradient(circle at top left, var(--lime-soft-strong), transparent 55%),
        linear-gradient(135deg, #f7ffe1 0%, #dde98b 28%, var(--lime) 100%);
      color:#050509;
      border-color: rgba(0,0,0,0.82);
      box-shadow: 0 14px 30px rgba(0,0,0,0.70), 0 0 0 1px rgba(255,255,255,0.04);
    }
    .btn-primary:hover{
      transform: translateY(-1px);
      box-shadow: 0 18px 40px rgba(0,0,0,0.78), 0 0 0 1px rgba(255,255,255,0.08);
    }
    .btn-ghost{
      border-color: rgba(191,219,254,0.22);
      background:
        radial-gradient(circle at top left, rgba(78,168,255,0.10), transparent 60%),
        rgba(3,7,22,0.84);
      color: var(--ink-soft);
    }
    .btn-ghost:hover{
      border-color: rgba(139,92,255,0.55);
      background:
        radial-gradient(circle at top left, rgba(139,92,255,0.14), transparent 60%),
        rgba(3,7,22,0.92);
      transform: translateY(-1px);
    }
    .btn-soft{
      border-color: rgba(255,255,255,0.14);
      background: rgba(3,7,22,0.62);
      color: rgba(197,206,231,0.92);
    }
    .btn-soft:hover{
      border-color: rgba(139,92,255,0.45);
      background: rgba(3,7,22,0.82);
      transform: translateY(-1px);
    }
    .btn-disabled,
    .btn[disabled]{
      opacity: 0.48;
      cursor:not-allowed;
      transform:none !important;
      box-shadow:none !important;
    }

    .pill{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      padding: 6px 10px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,0.14);
      background: rgba(3,7,22,0.72);
      font-size: 9px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: rgba(197,206,231,0.84);
      white-space: nowrap;
      line-height: 1.1;
      user-select:none;
    }
    .pill.is-lime{ border-color: rgba(185,200,90,0.38); }
    .pill.is-violet{ border-color: rgba(139,92,255,0.38); }
    .pill.is-blue{ border-color: rgba(78,168,255,0.38); }
    .pill.is-ice{ border-color: rgba(155,231,255,0.36); }
    .pill.is-warn{
      border-color: rgba(255,165,64,0.40);
      background: rgba(16,10,6,0.58);
      color: rgba(255,225,198,0.86);
    }

    /* =========================
       HERO — centered CavBot SVG + tablet showcase + passport copy
       ========================= */
    .arcade-hero{
      position:relative;
      z-index: 1;
      display:grid;
      gap: 18px;
      justify-items:center;
      padding-top: 8px;
    }

    .arcade-mark-stage{
      width: 100%;
      max-width: 720px;
      display:grid;
      place-items:center;
      padding: 18px 16px 10px;
      text-align:center;
      min-width:0;
    }
    .cavbot-mark{
      width: min(420px, 72vw);
      height: auto;
      filter: drop-shadow(0 20px 60px rgba(0,0,0,0.65));
      opacity: 0.98;
      transform: translateZ(0);
      margin: 0 auto;
    }
    .mark-caption{
      margin-top: 10px;
      font-size: 16px;
      line-height: 1.9;
      color: rgba(197,206,231,0.92);
      text-align:center;
      max-width: 42rem;
    }
    .mark-pills{
      margin-top: 14px;
      display:flex;
      flex-wrap:wrap;
      gap: 8px;
      justify-content:center;
    }

    /* Tablet mock */
    .tablet{
      width: 100%;
      max-width: clamp(720px, 78vw, 900px);
      margin: 0 auto;
      border-radius: 28px;
      border: 1px solid rgba(191,219,254,0.18);
      background:
        radial-gradient(circle at 20% 20%, rgba(78,168,255,0.14), transparent 55%),
        radial-gradient(circle at 80% 0%, rgba(139,92,255,0.18), transparent 58%),
        rgba(3,7,22,0.92);
      box-shadow: var(--shadow-strong);
      overflow:hidden;
      position:relative;
      min-width:0;
    }
    .tablet::before{
      content:"";
      position:absolute;
      inset: 0;
      background:
        linear-gradient(180deg, rgba(255,255,255,0.06), transparent 18%),
        linear-gradient(90deg, rgba(185,200,90,0.06), transparent 18%, transparent 82%, rgba(139,92,255,0.06));
      opacity: 0.9;
      pointer-events:none;
      mix-blend-mode: screen;
    }
    .tablet-topbar{
      display:flex;
      align-items:center;
      justify-content: space-between;
      gap: 10px;
      padding: 12px 14px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      background: rgba(1,4,14,0.44);
      position:relative;
      z-index: 1;
      min-width:0;
    }
    .tablet-dots{
      display:flex;
      gap: 7px;
      align-items:center;
      opacity: .9;
    }
    .tablet-dot{
      width: 10px; height: 10px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,0.12);
      background: rgba(1,3,15,0.55);
      box-shadow: 0 0 18px rgba(155,231,255,0.08);
    }
    .tablet-title{
      font-size: 10px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: rgba(197,206,231,0.86);
      white-space: nowrap;
      overflow:hidden;
      text-overflow: ellipsis;
      min-width:0;
    }

    .tablet-screen{
      position:relative;
      padding: 12px;
      display:grid;
      gap: 10px;
      align-items:center;
      justify-items:center;
      z-index: 1;
      min-width:0;
    }

    /* Preview: FIT the whole rectangle (no bleed / no crop) */
    .hero-preview{
      width: 100%;
      border-radius: 22px;
      border: 1px solid rgba(255,255,255,0.12);
      background: transparent;           /*  remove dark square behind */
      overflow:hidden;                 /*  hard clip */
      aspect-ratio: 16 / 9;
      min-height: 180px;
      position:relative;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04), 0 18px 42px rgba(0,0,0,0.55);
      isolation:isolate;
      outline: none;
      min-width:0;
    }
.arcade-title{
  margin: 0 0 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .14em;
  line-height: 1.05;
  font-size: clamp(22px, 3vw, 44px);

  /* keeps it clean + stable inside the column */
  max-width: 22ch;
}

.arcade-title span{
  display: block; /* forces: Action / Recovery / Play on separate lines */
}

.arcade-title--play{
  color: var(--lime, #B6FF2A);
}
    /* =========================
       Thumbnail center + no-bleed fix (your requested change)
       ========================= */
    .preview-frame,
    .hero-preview{
      overflow: hidden;                /*  hard clip */
    }

    .preview-media,
    .hero-preview-media{
      position:absolute;
      left:50%;
      top:50%;
      width:100%;
      height:100%;
      transform: translate(-50%,-50%); /*  true center */
      object-fit: contain !important;
      object-position: center;
      background: transparent;          /*  remove background square */
      filter: saturate(1.06) contrast(1.02);
    }
    .hero-preview-media{
      left: 0;
      top: 0;
      transform: none !important;
      object-fit: cover !important;
    }

    /*  image-only switch: never show video, never fade image */
    .preview[data-image-only] video,
    .hero-preview[data-image-only] video{ display:none !important; }
    .preview[data-image-only] img,
    .hero-preview[data-image-only] img{ opacity: 1 !important; }

    .hero-preview video{ display:none; }
    .hero-preview.is-video-ready video{ display:block; }
    .hero-preview.is-video-ready img{ opacity: 0; }
    .hero-preview img{ transition: opacity .18s ease; }

    /* Passport rectangle for intro copy (small + elegant) */
    .passport{
      width: min(760px, 94%);
      border-radius: 18px;
      border: 1px solid rgba(255,255,255,0.14);
      background:
        radial-gradient(circle at top left, rgba(185,200,90,0.12), transparent 60%),
        radial-gradient(circle at 85% 10%, rgba(139,92,255,0.16), transparent 60%),
        rgba(2,6,23,0.66);
      backdrop-filter: blur(10px);
      padding: 14px 14px 12px;
      display:grid;
      gap: 10px;
      text-align:center;
      min-width:0;
    }
    .passport p{
      font-size: 13px;
      line-height: 1.95;
      color: rgba(197,206,231,0.92);
      text-align:center;
      margin:0;
    }
    .passport-row{
      display:flex;
      flex-wrap:wrap;
      gap: 10px;
      align-items:center;
      justify-content:center;
      padding-top: 6px;
      min-width:0;
    }

    /* =========================
       GALLERY
       ========================= */
    .gallery-head{
      display:flex;
      align-items:flex-end;
      justify-content: space-between;
      gap: 14px;
      flex-wrap: wrap;
      min-width:0;
    }
    .gallery-filters{
      display:flex;
      flex-wrap:wrap;
      gap: 8px;
      align-items:center;
      min-width:0;
    }
    .gallery-surface{
      border-radius: 0;
      border: 0;
      background: transparent;
      padding: 8px 6px;
      box-shadow: none;
      position:relative;
      z-index:1;
      overflow:visible;
      min-width:0;
    }

    /* Desktop: ALWAYS 3 cards per row */
    .grid{
      width:100%;
      display:grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 30px;
      position:relative;
      z-index:1;
      min-width:0;
    }

    @media (max-width: 980px){
      .grid{
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 24px;
      }
      .tablet{ width: 100%; max-width: 980px; }
    }
    @media (max-width: 720px){
      .grid{
        grid-template-columns: minmax(0, 1fr);
        gap: 18px;
      }
      .page-inner{ padding-left: 16px; padding-right: 16px; gap: var(--space-xl); }
      .gallery-surface{ padding: 4px 0; }
      .tablet-screen{ padding: 14px; }

      /* Bigger previews on small screens */
      .hero-preview{ aspect-ratio: 4 / 3; min-height: 260px; }
    }

    .game-card{
      background: transparent;
      border-radius: var(--panel-radius-sm);
      padding: 0;
      display: flex;
      flex-direction: column;
      gap: 12px;
      box-shadow: none;
      max-width: 296px;
      margin: 0 auto;
      border: none;
      position:relative;
      min-width:0;
      width: 100%;
    }
    .game-card:hover{
      transform: none;
      border-color: transparent;
      box-shadow: none;
    }
    .game-card.accent-lime,
    .game-card.accent-violet,
    .game-card.accent-ice{
      border-color: rgba(139,92,255,0.35);
    }

    .game-top{
      display: none;
    }
    .game-title{
      margin:0;
      font-size: 12px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--ink);
      line-height: 1.35;
      min-width:0;
    }
    .game-status{
      display:flex;
      gap: 8px;
      align-items:center;
      flex-wrap: wrap;
      min-width:0;
    }

    /* Preview: FIT (no crop) */
    .preview{
      margin: 0;
      position: relative;
      border: 1px solid rgba(255,255,255,0.18);
      background:
        linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.01) 24%),
        linear-gradient(145deg, rgba(10,14,32,0.96), rgba(3,7,22,0.92));
      overflow: hidden;
      aspect-ratio: auto;
      min-height: 0;
      isolation: isolate;
      outline: none;
      min-width: 0;
      border-radius: 28px;
      padding: 10px;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.04);
    }
    .preview::before{
      content: "";
      position: absolute;
      top: 5px;
      left: 50%;
      transform: translateX(-50%);
      width: 54px;
      height: 4px;
      border-radius: 999px;
      background: rgba(197,206,231,0.42);
      z-index: 2;
      pointer-events: none;
    }
    .preview:focus-visible{
      box-shadow: none;
    }
    .preview-frame{
      position: relative;
      inset: auto;
      border-radius: 20px;
      border: 1px solid rgba(255,255,255,0.12);
      background: rgba(1,3,15,0.72);
      overflow: hidden;
      aspect-ratio: 16 / 10;
      min-height: 184px;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03);
      min-width: 0;
    }
    .preview .preview-media{
      object-fit: cover !important;
      transform: translate(-50%,-50%) scale(1.03);
    }

    .preview video{ display:none; }
    .preview.is-video-ready video{ display:block; }
    .preview.is-video-ready img{ opacity: 0; }
    .preview img{ transition: opacity .18s ease; }
    
    .game-actions{
      display: flex;
      flex-direction: column;
      gap: 10px;
      align-items: center;
      width: 100%;
      min-width: 0;
    }
    @media (max-width: 980px){
      .preview{
        border-radius: 24px;
        padding: 9px;
      }
      .preview-frame{
        min-height: 176px;
      }
    }
    @media (max-width: 720px){
      .preview{
        border-radius: 22px;
        padding: 8px;
      }
      .preview-frame{
        min-height: 168px;
      }
    }
    .game-actions .btn{
      width: auto;
      min-width: 160px;
      padding: 8px 14px;
      white-space: nowrap;
      text-transform: none;
      letter-spacing: 0.04em;
    }
    
    /* =========================
       DEVICE COVERAGE
       ========================= */
    .devices,
    .faq,
    .cta{
      margin-top: 40px;
      width: 100%;
    }

    .devices h2,
    .faq h2,
    .cta h2{
      margin: 0;
      font-size: 20px;
      letter-spacing: 0.06em;
      text-transform: none;
      color: var(--ink);
      line-height: 1.3;
    }

    .section-description{
      margin: 10px 0 0;
      color: var(--ink-soft);
      max-width: 520px;
      line-height: 1.8;
      font-size: 14px;
    }

    .device-grid{
      margin-top: 20px;
      display:grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 12px;
      width: 100%;
    }

    .device-card{
      border-radius: 18px;
      border: 1px solid rgba(255,255,255,0.10);
      background: rgba(3,7,22,0.92);
      padding: 16px;
      display:grid;
      gap: 10px;
      text-align:center;
      justify-items:center;
      overflow:hidden;
    }

    .device-icon{
      width: 54px;
      height: 54px;
      border-radius: 18px;
      border: 1px solid rgba(255,255,255,0.12);
      background:
        radial-gradient(circle at 35% 30%, rgba(78,168,255,0.12), transparent 58%),
        radial-gradient(circle at 70% 15%, rgba(139,92,255,0.14), transparent 62%),
        rgba(1,4,14,0.70);
      display:grid;
      place-items:center;
      box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03);
    }

    .device-icon svg{
      width: 26px;
      height: 26px;
      stroke: rgba(247,251,255,0.92);
      fill:none;
      stroke-width: 1.8;
      stroke-linecap: round;
      stroke-linejoin: round;
    }
    .device-icon-glyph{
      width: 26px;
      height: 26px;
      display: block;
      background-color: rgba(247,251,255,0.92);
      -webkit-mask-position: center;
      -webkit-mask-size: contain;
      -webkit-mask-repeat: no-repeat;
      mask-position: center;
      mask-size: contain;
      mask-repeat: no-repeat;
    }
    .device-icon-glyph--desktop{
      -webkit-mask-image: url("/assets/icons/cavbot-arcade/desktop-svgrepo-com.svg");
      mask-image: url("/assets/icons/cavbot-arcade/desktop-svgrepo-com.svg");
    }
    .device-icon-glyph--phone{
      -webkit-mask-image: url("/assets/icons/cavbot-arcade/phone-svgrepo-com.svg");
      mask-image: url("/assets/icons/cavbot-arcade/phone-svgrepo-com.svg");
    }
    .device-icon-glyph--tablet{
      -webkit-mask-image: url("/assets/icons/cavbot-arcade/tablet-svgrepo-com.svg");
      mask-image: url("/assets/icons/cavbot-arcade/tablet-svgrepo-com.svg");
    }

    .device-card h3{
      margin: 0;
      font-size: 12px;
      letter-spacing: 0.18em;
      text-transform: none;
      color: var(--ink);
      line-height: 1.25;
    }

    .device-card p{
      margin: 0;
      font-size: 13px;
      line-height: 1.7;
      color: var(--ink-soft);
    }

    .faq-list details{
      border: 1px solid rgba(255,255,255,0.08);
      border-radius: var(--panel-radius-sm);
      padding: 12px 14px;
      margin-top: 12px;
      background: rgba(255,255,255,0.01);
      overflow: hidden;
    }

    .faq-list summary{
      list-style:none;
      cursor:pointer;
      user-select:none;
      display:flex;
      justify-content: space-between;
      align-items: center;
      gap: 10px;
      color: var(--ink);
      font-size: 14px;
      letter-spacing: 0.08em;
      text-transform: none;
      line-height: 1.4;
      -webkit-tap-highlight-color: transparent;
    }

    .faq-list summary::-webkit-details-marker{
      display:none;
    }

    .faq-list summary span:last-child{
      transition: transform .16s ease;
    }

    .faq-list details[open] summary span:last-child{
      transform: rotate(180deg);
    }

    .faq-list p{
      margin: 10px 0 0;
      color: var(--ink-soft);
      line-height: 1.7;
      white-space: pre-line;
    }

    .cta-actions{
      margin-top: 18px;
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }

    .btn-cta{
      border-radius: 12px;
      padding: 8px 20px;
      letter-spacing: 0.12em;
      font-size: 0.7rem;
      text-transform: none;
      max-width: 200px;
      width: auto;
    }

    /* =========================
       ROTATE HINT (kept, subtle)
       ========================= */
    .rotate-hint{
      position: fixed;
      left: 50%;
      bottom: calc(18px + env(safe-area-inset-bottom));
      transform: translateX(-50%);
      z-index: 90;
      width: min(520px, calc(100vw - 24px));
      border-radius: 18px;
      border: 1px solid rgba(155,231,255,0.18);
      background:
        radial-gradient(circle at top left, rgba(155,231,255,0.10), transparent 60%),
        rgba(3,7,22,0.92);
      box-shadow: var(--shadow-strong);
      padding: 12px 12px;
      display:none;
      align-items:center;
      justify-content: space-between;
      gap: 12px;
      overflow:hidden;
      opacity: .98;
      min-width:0;
    }
    .rotate-hint.is-on{ display:flex; }
    .rotate-left{ display:flex; align-items:center; gap: 12px; min-width:0; }
    .rotate-ico{
      width: 44px; height: 44px;
      border-radius: 16px;
      border: 1px solid rgba(255,255,255,0.12);
      background:
        radial-gradient(circle at 35% 30%, rgba(78,168,255,0.12), transparent 58%),
        radial-gradient(circle at 70% 15%, rgba(139,92,255,0.14), transparent 62%),
        rgba(1,4,14,0.70);
      display:grid;
      place-items:center;
      flex: 0 0 auto;
    }
    .rotate-ico svg{
      width: 22px; height: 22px;
      stroke: rgba(247,251,255,0.92);
      fill:none;
      stroke-width: 1.8;
      stroke-linecap: round;
      stroke-linejoin: round;
    }
    .rotate-copy{ display:grid; gap: 4px; min-width:0; }
    .rotate-title{
      font-size: 11px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--ink);
      line-height: 1.25;
      white-space: nowrap;
      overflow:hidden;
      text-overflow: ellipsis;
    }
    .rotate-sub{
      font-size: 12px;
      line-height: 1.75;
      color: rgba(197,206,231,0.92);
    }

    /* =========================
       Tutorial Reader Modal (EPUB-style)  (FINAL)
        Now true lightbox:
       - Reader fits on screen (no "scroll up to reach it")
       - Internal scroll only
       - Buttons open straight into the lightbox
       - Smaller close circle (no bleed)
       ========================= */
    .modal{
      position: fixed;
      inset: 0;
      z-index: 100;

      /*  modal itself does NOT scroll */
      overflow: hidden;

      display: none;
      align-items: flex-start;
      justify-content: center;

      padding:
        calc(14px + env(safe-area-inset-top))
        calc(14px + env(safe-area-inset-right))
        calc(18px + env(safe-area-inset-bottom))
        calc(14px + env(safe-area-inset-left));

      background: transparent;
      min-width:0;
    }
    .modal.is-open{ display:flex; }

    .modal-backdrop{
      position: fixed;
      inset:0;
      background: rgba(0, 0, 0, 0.72);
      -webkit-backdrop-filter: none;
      backdrop-filter: none;
      opacity: 1;
    }

    .reader{
      position: relative;
      z-index: 1;
      margin: 0 auto;
      width: min(980px, 96vw);

      border-radius: var(--panel-radius-xl);
      border: 1px solid rgba(255,255,255,0.12);
      background: rgba(3,7,22,0.97);
      box-shadow: 0 22px 80px rgba(0,0,0,0.92), 0 0 0 1px rgba(255,255,255,0.05);

      /*  the reader fits inside viewport */
      max-height: calc(100vh - 40px - env(safe-area-inset-top) - env(safe-area-inset-bottom));
      overflow: hidden;

      display: grid;
      grid-template-rows: auto 1fr auto; /*  head, scroll area, footer */
      min-width:0;
      backdrop-filter: blur(12px);
    }

    /* Head wrapper */
    .reader-head{
      position: relative;
      z-index: 30;
      border-top-left-radius: var(--panel-radius-xl);
      border-top-right-radius: var(--panel-radius-xl);
      overflow: hidden;
      background: rgba(1,4,14,0.88);
      box-shadow: none;
      backdrop-filter: blur(14px);
    }

    .reader-topbar{
      padding: 12px 14px 10px;
      display:flex;
      align-items:center;
      justify-content:center;
      gap: 10px;
      min-width:0;
      position: relative;
    }

    .reader-title{
      display:flex;
      align-items:center;
      justify-content:center;
      min-width:0;
      width: 100%;
      text-align:center;
    }
    .reader-title strong{
      font-size: 12px;
      letter-spacing: 0.20em;
      text-transform: uppercase;
      color: var(--ink);
      line-height: 1.25;
      white-space: nowrap;
      overflow:hidden;
      text-overflow: ellipsis;
      max-width: 44ch;
    }

    .reader-actions{
      position:absolute;
      right: 10px;
      top: 50%;
      transform: translateY(-50%);
      display:flex;
      gap: 8px;
      align-items:center;
      min-width:0;
    }

    .icon-btn{
      border:none;
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.12);
      color: rgba(197,206,231,0.92);
      cursor:pointer;
      font-size: 12px;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      padding: 8px 12px;
      border-radius: 8px;
      transition: transform .12s ease, background .18s ease, border-color .18s ease, opacity .18s ease;
      user-select:none;
      -webkit-tap-highlight-color: transparent;
      white-space: nowrap;
      max-width: 100%;
      overflow:hidden;
      text-overflow: ellipsis;
    }
    .icon-btn:hover{
      transform: translateY(-1px);
      background: rgba(255,255,255,0.07);
      border-color: rgba(255,255,255,0.22);
      color: var(--ink);
    }
    .icon-btn:focus-visible{
      outline: 2px solid rgba(78,168,255,0.55);
      outline-offset: 2px;
    }

    /*  smaller perfect circle close (no bleed) */
    .icon-close{
      width: 30px;
      height: 30px;
      padding: 0;
      border-radius: 999px;
      display:grid;
      place-items:center;
      letter-spacing: 0;
      text-transform:none;
      background: transparent;
      border: 1px solid transparent;
    }
    .icon-close:hover{
      transform: translateY(1px);
      background: rgba(255,255,255,0.08);
      border-color: rgba(255,255,255,0.22);
      color: var(--ink);
    }
    .icon-close svg{
      width: 14px;
      height: 14px;
      stroke: rgba(247,251,255,0.92);
      stroke-width: 2.2;
      stroke-linecap: round;
      fill: none;
      opacity: 0.95;
    }

    /* Progress strip */
    .reader-progress{
      height: 7px;
      background: rgba(255,255,255,0.06);
      position: relative;
    }
    .reader-progress > span{
      position:absolute;
      left:0;
      top:0;
      bottom:0;
      width: 0%;
      background: linear-gradient(90deg, rgba(139,92,255,0.92), rgba(78,168,255,0.92), rgba(185,200,90,0.92));
      box-shadow: 0 0 18px rgba(78,168,255,0.18);
      transition: width .08s linear;
    }

    /*  middle area (chapters + body) is the only scroll region */
    .reader-shell{
      display:grid;
      grid-template-columns: 260px minmax(0, 1fr);
      min-width:0;
      overflow: hidden;
    }

    .chapters{
      background: rgba(1,4,14,0.22);
      padding: 14px 12px 16px;
      overflow: auto;
      height: 100%;
      z-index: 2;
      border-radius: 18px;
      margin: 16px 0 16px 16px;
      border: 1px solid rgba(255,255,255,0.08);
      box-shadow: none;
    }
    .chapters h3{
      margin: 0 0 10px 0;
      font-size: 10px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: rgba(197,206,231,0.84);
      line-height: 1.25;
      text-align:left;
      display: none;
    }
    .chapter-list{
      display:grid;
      gap: 8px;
      margin:0;
      padding:0;
      list-style:none;
      min-width:0;
    }
    .chapter-btn{
      width: 100%;
      text-align:left;
      padding: 10px 12px;
      border-radius: 8px;
      border: 1px solid rgba(255,255,255,0.10);
      background: rgba(2,6,23,0.62);
      color: rgba(247,251,255,0.90);
      font-size: 11px;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      cursor:pointer;
      transition: transform .12s ease, border-color .18s ease, background .18s ease;
      min-width:0;
      white-space: nowrap;
      overflow:hidden;
      text-overflow: ellipsis;
    }
    .chapter-btn:hover{
      transform: translateY(-1px);
      border-color: rgba(255,255,255,0.22);
      background: rgba(2,6,23,0.74);
    }
    .chapter-btn.is-active{
      border-color: rgba(255,255,255,0.26);
      background: rgba(2,6,23,0.74);
    }
    .chapter-btn:focus-visible{
      outline: 2px solid rgba(78,168,255,0.55);
      outline-offset: 2px;
    }

    /*  internal scroll container */
    .reader-body{
      overflow-y: auto;
      -webkit-overflow-scrolling: touch;
      padding: 20px 20px 18px;
      min-width:0;
      height: 100%;
    }

    .reader-content{
      max-width: 68ch;
      display:grid;
      gap: 14px;
      min-width:0;
    }

    .reader-content h2{
      margin: 22px 0 0;
      font-size: 14px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: var(--ink);
      line-height: 1.35;
    }
    .reader-content h2:first-child{ margin-top: 0; }

    .reader-content h3{
      margin: 18px 0 0;
      font-size: 12px;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: rgba(247,251,255,0.92);
      line-height: 1.35;
    }
    .reader-content p{
      font-size: 14px;
      line-height: 1.98;
      color: rgba(197,206,231,0.92);
      margin: 0;
    }
    .reader-content ul{
      margin: 0;
      padding-left: 18px;
      display:grid;
      gap: 10px;
      color: rgba(197,206,231,0.92);
      font-size: 13px;
      line-height: 1.9;
    }

    /* Digitized passport system */
    .passport-card{
      padding: 14px 14px 12px;
      border-radius: 18px;
      border: 1px solid rgba(255,255,255,0.12);
      background: rgba(2,6,23,0.62);
      display:grid;
      gap: 12px;
    }
    .passport-head{
      display:flex;
      align-items:center;
      justify-content: space-between;
      gap: 10px;
      flex-wrap:wrap;
      min-width:0;
      display: none;
    }
    .passport-head strong{
      font-size: 10px;
      letter-spacing: 0.20em;
      text-transform: uppercase;
      color: rgba(247,251,255,0.94);
      line-height: 1.25;
    }
    .secure-badge{
      display:inline-flex;
      align-items:center;
      gap: 8px;
      padding: 0;
      border-radius: 0;
      border: 0;
      background: transparent;
      color: rgba(247,251,255,0.92);
      font-size: 10px;
      letter-spacing: 0.14em;
      text-transform: uppercase;
      white-space: nowrap;
    }
    .secure-badge svg{
      width: 14px;
      height: 14px;
      stroke: rgba(247,251,255,0.92);
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
      fill: none;
      opacity: 0.95;
    }

    .passport-grid{
      display:grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
      min-width:0;
    }
    .passport-item{
      display:flex;
      align-items:center;
      justify-content: space-between;
      gap: 10px;
      padding: 10px 10px;
      border-radius: 8px;
      border: 1px solid rgba(255,255,255,0.10);
      background: rgba(1,3,15,0.48);
      min-width:0;
    }
    .meta-chip{
      font-size: 9px;
      letter-spacing: 0.20em;
      text-transform: uppercase;
      color: rgba(197,206,231,0.82);
      white-space: nowrap;
    }
    .meta-value{
      font-family: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
      font-size: 11px;
      color: rgba(247,251,255,0.92);
      white-space: nowrap;
      overflow:hidden;
      text-overflow: ellipsis;
      max-width: 22ch;
      text-align:right;
    }

    .callout{
      border-radius: 8px;
      border: 1px solid rgba(255,255,255,0.12);
      background: rgba(2,6,23,0.52);
      padding: 12px 12px;
      display:grid;
      gap: 8px;
      min-width:0;
    }
    .callout strong{
      font-size: 10px;
      letter-spacing: 0.18em;
      text-transform: uppercase;
      color: rgba(247,251,255,0.92);
      line-height: 1.25;
    }

    .kbd{
      font-family: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
      font-size: 11px;
      background: transparent;
      border-radius: 0;
      padding: 0;
      border: 0;
      color: rgba(247,251,255,0.92);
      white-space: nowrap;
    }

    /* Footer simplified (no prev/next) */
    .reader-footer{
      padding: 14px 16px 16px;
      display:flex;
      align-items:center;
      justify-content: space-between;
      gap: 12px;
      flex-wrap:wrap;
      min-width:0;
      border-bottom-left-radius: var(--panel-radius-xl);
      border-bottom-right-radius: var(--panel-radius-xl);
      background: rgba(1,4,14,0.22);
      margin-top: 0;
    }
    .reader-foot-left{
      display:flex;
      flex-wrap:wrap;
      gap: 10px;
      align-items:center;
      color: rgba(197,206,231,0.84);
      font-size: 11px;
      line-height: 1.6;
      min-width:0;
    }
    .reader-status-tag{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height: 24px;
      padding: 0 10px;
      border-radius: 6px;
      border: 1px solid rgba(78,168,255,0.48);
      background: rgba(2,10,29,0.62);
      color: rgba(230,241,255,0.95);
      box-shadow: inset 0 0 0 1px rgba(78,168,255,0.14);
      font-size: 10px;
      letter-spacing: 0.12em;
      text-transform: uppercase;
      line-height: 1;
      white-space: nowrap;
    }
    .reader-content h2#passport{
      display: none;
    }

    .backtop{
      display: none !important;
    }

    @media (max-width: 980px){
      .reader-shell{ grid-template-columns: minmax(0,1fr); }
      /*  remove the “chapters pill row” clutter on mobile */
      .chapters{ display:none; }
      .reader-body{ padding: 18px 16px 16px; }
    }
    @media (max-width: 720px){
      .reader{ width: min(980px, 98vw); }
      .passport-grid{ grid-template-columns: minmax(0,1fr); }
      .meta-value{ max-width: 26ch; }
    }

    /* Prevent any sideways overflow */
    .modal, .reader, .reader-shell, .reader-body{ min-width:0; }