:root {
            --gold: #f5c518;
            --black: #0e0e0e;
            --card-bg: #1a1a1a;
            --text: #ccc;
        }

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

        body {
            background: #0e0e0e;
            color: #fff;
            font-family: 'Syne', sans-serif;
            padding: 2.5rem 2.5rem 2.5rem 3rem;
        }

        main {
            flex: 1;
            padding: 4rem 2.5rem;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }

        .arc-panel-num {
            font-size: 5rem;
            font-weight: 800;
            color: rgba(245, 197, 24, 0.08);
            line-height: 1;
            margin-bottom: -1.5rem;
        }

        .arc-panel-label {
            font-size: 0.7rem;
            letter-spacing: 0.2em;
            color: var(--gold);
            text-transform: uppercase;
            margin-bottom: 0.75rem;
        }

        .arc-panel-title {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 0.5rem;
        }

        .arc-panel-tagline {
            font-style: italic;
            color: var(--gold);
            margin-bottom: 1rem;
            font-size: 0.95rem;
        }

        .arc-panel-desc {
            color: var(--text);
            line-height: 1.7;
            margin-bottom: 1.5rem;
            font-size: 0.95rem;
        }

        .arc-panel-features {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 1.5rem;
        }

        .arc-panel-features li {
            background: rgba(245, 197, 24, 0.08);
            border: 1px solid rgba(245, 197, 24, 0.2);
            color: var(--gold);
            padding: 0.3rem 0.8rem;
            border-radius: 999px;
            font-size: 0.8rem;
        }

        .arc-panel-sub-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.75rem;
            margin-bottom: 1.5rem;
        }

        .arc-sub-card {
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: 10px;
            padding: 1rem;
        }

        .arc-sub-card i {
            color: var(--gold);
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
            display: block;
        }

        .arc-sub-card h5 {
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 0.25rem;
        }

        .arc-sub-card p {
            font-size: 0.75rem;
            color: var(--text);
        }

        .btn {
            display: inline-block;
            padding: 0.75rem 1.75rem;
            background: var(--gold);
            color: #000;
            font-weight: 700;
            text-decoration: none;
            border-radius: 4px;
            font-size: 0.85rem;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .btn:hover {
            background: #fff;
        }

        @media (max-width: 480px) {
            body {
                padding: 1.5rem;
            }

            .arc-panel-num {
                font-size: 3rem;
                margin-bottom: -0.8rem;
            }

            .arc-panel-title {
                font-size: 1.7rem;
            }

            .arc-panel-sub-cards {
                grid-template-columns: 1fr;
            }
        }
    

/* ── v8 service enhancements ── */
:root { --gold: #E8C84A; }