/* Modern flat diagnostic strip — no card background or border;
           the stats sit directly on the page separated by hairlines.
           Width-constrained so it doesn't sprawl across the full container. */
        #proxy-checker-widget {
            max-width: 1180px;
            margin-left: auto;
            margin-right: auto;
        }
        .pxm2-checker-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: start;
        }
        .pxm2-checker-row .pxm2-checker-card + .pxm2-checker-card {
            border-left: 1px solid var(--border);
            padding-left: 2.5rem;
        }
        @media (max-width: 900px) {
            .pxm2-checker-row {
                grid-template-columns: 1fr;
                gap: 3rem;
            }
            .pxm2-checker-row .pxm2-checker-card + .pxm2-checker-card {
                border-left: none;
                padding-left: 0;
            }
        }
        .pxm2-checker-card {
            background: transparent;
            border: none;
            padding: 0;
        }
        .pxm2-checker-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            margin-bottom: 1.25rem;
            flex-wrap: wrap;
        }
        .pxm2-checker-head > div:first-child {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .pxm2-checker-title {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--text-primary);
            margin: 0;
        }
        .pxm2-checker-status {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--text-secondary);
            padding: 0.3rem 0.85rem;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: var(--bg-secondary);
        }
        .pxm2-checker-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--text-secondary);
            display: inline-block;
            flex-shrink: 0;
        }
        .pxm2-checker-dot--pending {
            background: var(--warning);
            animation: pxm2-checker-pulse 1s ease-in-out infinite;
        }
        .pxm2-checker-dot--ok {
            background: var(--success);
            box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
        }
        @keyframes pxm2-checker-pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.35; }
        }
        .pxm2-checker-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
            gap: 1.25rem 2.5rem;
            margin-bottom: 1.5rem;
        }
        .pxm2-checker-stat {
            display: flex;
            flex-direction: column;
            gap: 0.3rem;
            padding-left: 0.9rem;
            border-left: 2px solid var(--border);
            transition: border-color 0.3s ease;
        }
        .pxm2-checker-stat:has(.pxm2-checker-value[style*="--success"]) {
            border-left-color: var(--success);
        }
        .pxm2-checker-label {
            font-size: 0.68rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--text-secondary);
            font-weight: 600;
        }
        .pxm2-checker-value {
            font-size: 0.95rem;
            font-weight: 700;
            font-family: var(--font-mono);
            color: var(--text-primary);
            transition: color 0.2s ease;
            word-break: break-word;
        }
        .pxm2-checker-value--flash {
            animation: pxm2-checker-value-flash 0.5s ease-out;
        }
        @keyframes pxm2-checker-value-flash {
            0% { opacity: 0.25; transform: translateY(3px); }
            100% { opacity: 1; transform: translateY(0); }
        }
        .pxm2-checker-btn {
            width: auto;
            padding: 0.5rem 1.25rem;
            border-radius: 999px;
            font-weight: 700;
            font-size: 0.82rem;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
        }
        .pxm2-checker-btn:hover:not(:disabled) {
            transform: translateY(-2px);
        }
        @media (max-width: 640px) {
            .pxm2-checker-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem 1.25rem;
            }
        }