/* Setup page layout */
    .source-hardware-page .setup-layout {
      display: grid;
      grid-template-columns: 220px 1fr;
      gap: 0;
      max-width: 1100px;
      margin: 0 auto;
      padding: 0 1.5rem 5rem;
      align-items: start;
    }
    @media (max-width: 860px) {
      .source-hardware-page .setup-layout {
        grid-template-columns: 1fr;
      }
      .source-hardware-page .setup-sidebar {
        display: none;
      }
    }
    .source-hardware-page .setup-sidebar {
      position: sticky;
      top: 5.5rem;
      padding: 1.5rem 1.5rem 1.5rem 0;
      border-right: 1px solid var(--color-border);
    }
    .source-hardware-page .setup-sidebar h4 {
      font-size: 0.68rem;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--color-text-dim);
      margin: 0 0 0.75rem;
    }
    .source-hardware-page .setup-sidebar ul {
      list-style: none;
      margin: 0;
      padding: 0;
    }
    .source-hardware-page .setup-sidebar li {
      margin-bottom: 0.2rem;
    }
    .source-hardware-page .setup-sidebar a {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      padding: 0.35rem 0.6rem;
      border-radius: var(--radius);
      font-size: 0.84rem;
      color: var(--color-text-muted);
      text-decoration: none;
      transition: background var(--transition), color var(--transition);
    }
    .source-hardware-page .setup-sidebar a:hover,
    .source-hardware-page .setup-sidebar a.is-active {
      background: var(--color-accent-dim);
      color: var(--color-accent);
    }
    .source-hardware-page .setup-sidebar .step-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 1.4rem;
      height: 1.4rem;
      border-radius: 50%;
      background: var(--color-bg-elevated);
      border: 1px solid var(--color-border);
      font-size: 0.7rem;
      font-weight: 700;
      color: var(--color-text-dim);
      flex-shrink: 0;
    }
    .source-hardware-page .setup-sidebar a:hover .step-num,
    .source-hardware-page .setup-sidebar a.is-active .step-num {
      background: var(--color-accent);
      border-color: var(--color-accent);
      color: #fff;
    }
    /* Content area */
    .source-hardware-page .setup-content {
      padding: 2rem 0 2rem 2.5rem;
    }
    @media (max-width: 860px) {
      .source-hardware-page .setup-content {
        padding: 2rem 0;
      }
    }
    /* Step sections */
    .source-hardware-page .setup-step {
      padding: 2.5rem 0 2rem;
      border-bottom: 1px solid var(--color-border);
    }
    .source-hardware-page .setup-step:last-child {
      border-bottom: none;
    }
    .source-hardware-page .step-header {
      display: flex;
      align-items: flex-start;
      gap: 1rem;
      margin-bottom: 1.5rem;
    }
    .source-hardware-page .step-badge {
      display: flex;
      align-items: center;
      justify-content: center;
      width: 3rem;
      height: 3rem;
      border-radius: 50%;
      background: var(--color-accent-dim);
      border: 2px solid var(--color-border-glow);
      font-family: var(--font-display);
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--color-accent);
      flex-shrink: 0;
      margin-top: 0.1rem;
    }
    .source-hardware-page .step-header-text h2 {
      font-family: var(--font-display);
      font-size: 1.5rem;
      font-weight: 700;
      color: var(--color-text);
      margin-bottom: 0.25rem;
    }
    .source-hardware-page .step-time-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
      font-size: 0.78rem;
      font-weight: 600;
      color: var(--color-text-muted);
      background: var(--color-bg-elevated);
      border: 1px solid var(--color-border);
      border-radius: 999px;
      padding: 0.2rem 0.7rem;
    }
    .source-hardware-page .setup-step h3 {
      font-family: var(--font-display);
      font-size: 1rem;
      font-weight: 600;
      color: var(--color-text);
      margin: 1.75rem 0 0.5rem;
    }
    .source-hardware-page .setup-step p {
      color: var(--color-text-muted);
      font-size: 0.95rem;
      margin-bottom: 0.75rem;
    }
    .source-hardware-page .setup-step ul,
    .source-hardware-page .setup-step ol {
      color: var(--color-text-muted);
      font-size: 0.95rem;
      padding-left: 1.4rem;
      margin-bottom: 1rem;
    }
    .source-hardware-page .setup-step li {
      margin-bottom: 0.4rem;
      line-height: 1.6;
    }
    /* Code blocks */
    .source-hardware-page .setup-step pre {
      background: var(--color-bg-deep);
      border: 1px solid var(--color-border);
      border-radius: var(--radius);
      padding: 1.25rem 1.5rem;
      overflow-x: auto;
      margin: 1rem 0;
    }
    .source-hardware-page .setup-step pre code {
      font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
      font-size: 0.85rem;
      line-height: 1.65;
      color: #93c5fd;
    }
    /* Inline code */
    .source-hardware-page .setup-step code:not(pre code) {
      font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
      font-size: 0.85em;
      background: var(--color-bg-elevated);
      border: 1px solid var(--color-border);
      border-radius: 4px;
      padding: 0.1em 0.35em;
      color: var(--color-accent);
    }
    /* Checklist */
    .source-hardware-page .checklist {
      list-style: none;
      padding: 0;
      margin: 0.75rem 0 1.25rem;
    }
    .source-hardware-page .checklist li {
      display: flex;
      align-items: flex-start;
      gap: 0.6rem;
      padding: 0.4rem 0;
      font-size: 0.93rem;
      color: var(--color-text-muted);
      border-bottom: 1px solid var(--color-border);
    }
    .source-hardware-page .checklist li:last-child {
      border-bottom: none;
    }
    .source-hardware-page .checklist li::before {
      content: '☐';
      color: var(--color-accent);
      font-size: 1rem;
      line-height: 1.4;
      flex-shrink: 0;
    }
    /* Warning box */
    .source-hardware-page .warning-box {
      display: flex;
      gap: 0.75rem;
      background: rgba(251, 191, 36, 0.07);
      border: 1px solid rgba(251, 191, 36, 0.22);
      border-radius: var(--radius);
      padding: 1rem 1.25rem;
      margin: 1rem 0;
    }
    .source-hardware-page .warning-box-icon {
      font-size: 1.2rem;
      flex-shrink: 0;
      line-height: 1.5;
    }
    .source-hardware-page .warning-box-body {
      font-size: 0.9rem;
      color: var(--color-text-muted);
    }
    .source-hardware-page .warning-box-body strong {
      color: var(--color-accent-amber);
      display: block;
      margin-bottom: 0.35rem;
      font-size: 0.85rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }
    .source-hardware-page .warning-box-body ul {
      padding-left: 1.2rem;
      margin: 0.25rem 0 0;
      color: var(--color-text-muted);
    }
    .source-hardware-page .warning-box-body li { margin-bottom: 0.2rem; }
    /* Info box */
    .source-hardware-page .info-box {
      background: var(--color-accent-dim);
      border: 1px solid var(--color-border-glow);
      border-radius: var(--radius);
      padding: 1rem 1.25rem;
      margin: 1rem 0;
      font-size: 0.9rem;
      color: var(--color-text-muted);
    }
    .source-hardware-page .info-box strong { color: var(--color-text); }
    /* Deep dive links */
    .source-hardware-page .deep-dives {
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
      margin: 1rem 0;
    }
    .source-hardware-page .deep-dive-link {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.87rem;
      color: var(--color-accent);
      text-decoration: none;
    }
    .source-hardware-page .deep-dive-link:hover { text-decoration: underline; }
    .source-hardware-page .deep-dive-link::before {
      content: '→';
      font-weight: 700;
    }
    /* Step nav buttons */
    .source-hardware-page .step-nav {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 2rem;
      gap: 1rem;
    }
    /* Progress indicator */
    .source-hardware-page .progress-bar-wrap {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      margin-top: 0.75rem;
    }
    .source-hardware-page .progress-bar-track {
      flex: 1;
      height: 4px;
      background: var(--color-border);
      border-radius: 999px;
      overflow: hidden;
    }
    .source-hardware-page .progress-bar-fill {
      height: 100%;
      border-radius: 999px;
      background: var(--color-accent);
    }
    .source-hardware-page .progress-label {
      font-size: 0.78rem;
      color: var(--color-text-dim);
      white-space: nowrap;
    }
    /* In-the-box list */
    .source-hardware-page .in-the-box {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
      gap: 0.5rem;
      margin: 0.75rem 0 1.25rem;
    }
    .source-hardware-page .in-the-box-item {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.6rem 0.75rem;
      background: var(--color-bg-elevated);
      border: 1px solid var(--color-border);
      border-radius: var(--radius);
      font-size: 0.86rem;
      color: var(--color-text-muted);
    }
    .source-hardware-page .in-the-box-item::before {
      content: '✓';
      color: var(--color-accent);
      font-weight: 700;
      flex-shrink: 0;
    }
    /* Operator choice cards */
    .source-hardware-page .operator-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 0.75rem;
      margin: 1rem 0;
    }
    @media (max-width: 540px) {
      .source-hardware-page .operator-cards { grid-template-columns: 1fr; }
    }
    .source-hardware-page .operator-card {
      background: var(--color-bg-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius);
      padding: 1rem;
    }
    .source-hardware-page .operator-card h4 {
      font-size: 0.9rem;
      font-weight: 700;
      color: var(--color-text);
      margin-bottom: 0.3rem;
    }
    .source-hardware-page .operator-card p {
      font-size: 0.8rem;
      color: var(--color-text-dim);
      margin: 0;
    }
    .source-hardware-page .operator-card.is-recommended {
      border-color: var(--color-border-glow);
      background: var(--color-accent-dim);
    }
    .source-hardware-page .operator-card .recommend-tag {
      display: inline-block;
      font-size: 0.65rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.06em;
      color: var(--color-accent);
      margin-bottom: 0.35rem;
    }
    /* Breadcrumb */
    .source-hardware-page .breadcrumb {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.83rem;
      color: var(--color-text-dim);
      flex-wrap: wrap;
      margin-bottom: 1.5rem;
    }
    .source-hardware-page .breadcrumb a { color: var(--color-text-muted); text-decoration: none; }
    .source-hardware-page .breadcrumb a:hover { color: var(--color-accent); }
    .source-hardware-page .breadcrumb span { color: var(--color-text-dim); }
    /* Celebration box */
    .source-hardware-page .celebration-box {
      background: linear-gradient(135deg, rgba(56,189,248,0.08) 0%, rgba(56,189,248,0.03) 100%);
      border: 1px solid var(--color-border-glow);
      border-radius: var(--radius-lg);
      padding: 2rem;
      text-align: center;
      margin-top: 1.5rem;
    }
    .source-hardware-page .celebration-box h3 {
      font-family: var(--font-display);
      font-size: 1.3rem;
      color: var(--color-text);
      margin-bottom: 0.5rem;
    }
    .source-hardware-page .celebration-box p {
      color: var(--color-text-muted);
      font-size: 0.95rem;
      margin-bottom: 1.25rem;
    }