*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --bg: #0a0a0a; --bg2: #111111; --bg3: #181818;
      --border: rgba(255,255,255,0.07); --border-bright: rgba(255,255,255,0.14);
      --lime: #bfff5e; --lime-dim: rgba(191,255,94,0.10); --lime-glow: rgba(191,255,94,0.28);
      --white: #f0f0ec; --muted: rgba(240,240,236,0.45); --faint: rgba(240,240,236,0.18);
      --mono: 'DM Mono', monospace;
      --sans: 'Bodoni Moda', Georgia, serif;
      --body: 'Instrument Sans', system-ui, sans-serif;
    }
    html { scroll-behavior: smooth; }
    body { background: var(--bg); color: var(--white); font-family: var(--body); line-height: 1.7; overflow-x: hidden; }
    body::before {
      content: ''; position: fixed; inset: 0;
      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='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.035'/%3E%3C/svg%3E");
      pointer-events: none; z-index: 1000; opacity: 0.6;
    }
    .page-hero {
      padding: 160px 48px 80px;
      border-bottom: 1px solid var(--border);
      position: relative; overflow: hidden;
    }
    .hero-grid-bg {
      position: absolute; inset: 0;
      background-image: linear-gradient(var(--border) 1px, transparent 1px), linear-gradient(90deg, var(--border) 1px, transparent 1px);
      background-size: 60px 60px;
      mask-image: radial-gradient(ellipse 100% 100% at 0% 50%, black 20%, transparent 80%);
    }
    .page-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--lime); margin-bottom: 24px; position: relative; }
    .page-title { font-family: var(--sans); font-size: clamp(44px, 6vw, 80px); font-weight: 900; font-variation-settings: 'opsz' 96; line-height: 1.0; letter-spacing: -0.02em; margin-bottom: 28px; position: relative; max-width: 700px; }
    .page-title em { font-style: italic; color: var(--lime); }
    .page-intro { font-size: 18px; color: var(--muted); max-width: 520px; line-height: 1.75; position: relative; }
    .page-intro a { color: var(--lime); text-decoration: none; }
    .page-intro a:hover { text-decoration: underline; }

    .faq-wrap { max-width: 800px; margin: 0 auto; padding: 80px 48px 120px; }

    .faq-category {
      font-family: var(--mono); font-size: 11px; letter-spacing: 0.2em;
      text-transform: uppercase; color: var(--lime);
      padding: 48px 0 20px;
      margin-top: 48px;
    }
    .faq-category:first-child { padding-top: 0; margin-top: 0; }

    .faq-item { border-bottom: 1px solid var(--border); }
    .faq-item:first-child { border-top: 1px solid var(--border); }

    .faq-q {
      width: 100%; background: none; border: none; cursor: pointer;
      text-align: left; padding: 28px 0;
      display: flex; justify-content: space-between; align-items: flex-start; gap: 24px;
    }

    .faq-q-text {
      font-family: var(--body); font-size: 17px; font-weight: 600;
      color: var(--white); line-height: 1.4;
    }

    .faq-icon {
      flex-shrink: 0; width: 28px; height: 28px;
      border: 1px solid var(--lime); border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      margin-top: 2px; transition: border-color 0.2s, background 0.2s;
      color: var(--lime);
    }
    .faq-icon svg { transition: transform 0.3s ease; }

    .faq-item.open .faq-icon { background: var(--lime); color: var(--bg); border-color: var(--lime); }
    .faq-item.open .faq-icon svg { transform: rotate(180deg); }
    .faq-item.open .faq-q-text { color: var(--lime); }

    .faq-a {
      max-height: 0; overflow: hidden;
      transition: max-height 0.5s ease, padding 0.3s ease;
    }
    .faq-item.open .faq-a { max-height: 900px; transition: max-height 0.5s ease, padding 0.3s ease; }

    .faq-a-inner {
      padding-bottom: 32px;
      font-size: 15px; color: var(--muted); line-height: 1.8;
    }

    .faq-a-inner p { margin-bottom: 14px; }
    .faq-a-inner p:last-child { margin-bottom: 0; }
    .faq-a-inner strong { color: var(--white); font-weight: 400; }
    .faq-a-inner code { font-family: var(--mono); font-size: 12px; color: var(--lime); background: var(--lime-dim); padding: 2px 6px; border-radius: 3px; }
    .faq-a-inner a { color: var(--lime); text-decoration: none; }
    .faq-a-inner a:hover { text-decoration: underline; }
    .faq-a-inner ul { padding-left: 20px; margin-top: 8px; }
    .faq-a-inner ul li { margin-bottom: 6px; }

    .cta-strip {
      background: var(--bg2); border: 1px solid var(--border-bright);
      border-radius: 8px; padding: 48px; margin-top: 80px;
      text-align: center;
    }
    .cta-strip-title { font-family: var(--body); font-size: 26px; font-weight: 700; letter-spacing: -0.02em; margin-bottom: 12px; }
    .cta-strip-sub { font-size: 15px; color: var(--muted); margin-bottom: 28px; }
    .cta-strip a { color: var(--lime); text-decoration: none; font-size: 17px; }
    .cta-strip a:hover { text-decoration: underline; }
    .btn-primary { display: inline-flex; align-items: center; gap: 10px; font-family: var(--mono); font-size: 14px; font-weight: 500; letter-spacing: 0.05em; color: var(--bg); background: var(--lime); padding: 16px 32px; border-radius: 4px; text-decoration: none; transition: transform 0.15s, box-shadow 0.15s; }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px var(--lime-glow); }

    footer { padding: 48px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 20px; }
    .footer-logo { font-family: var(--mono); font-size: 14px; color: var(--lime); }
    .footer-links { display: flex; gap: 32px; }
    .footer-links a { font-family: var(--mono); font-size: 12px; color: var(--muted); text-decoration: none; }
    .footer-links a:hover { color: var(--white); }
    .footer-copy { font-family: var(--mono); font-size: 11px; color: var(--faint); }

    @media (max-width: 767px) {
      .page-hero { padding: 120px 24px 60px; }
      .faq-wrap { padding: 60px 24px; }
      footer { padding: 40px 24px; flex-direction: column; align-items: flex-start; }
      .cta-strip { padding: 32px 20px; }
      .footer-links { flex-direction: column; gap: 12px; }
    }

  /* ── COMPATIBILITY CALLOUT ───────────────────── */
  .compat-callout {
    background: rgba(191,255,94,0.07);
    border: 1px solid rgba(191,255,94,0.2);
    border-radius: 6px;
    padding: 20px 24px;
    margin-bottom: 24px;
    font-size: 14px;
    color: rgba(240,240,236,0.6);
    line-height: 1.7;
    font-family: 'Instrument Sans', sans-serif;
  }
  .compat-callout-label {
    color: #bfff5e;
    font-family: 'DM Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
  }
  .compat-callout-highlight {
    color: #f0f0ec;
  }