:root {
            --bg-color: #0f172a;
            --card-bg: #1e293b;
            --text-main: #f1f5f9;
            --text-muted: #94a3b8;
            --accent: #38bdf8;
            --hover-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', system-ui, sans-serif;
        }

        body {
            background-color: var(--bg-color);
            color: var(--text-main);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        header {
            text-align: center;
            margin-bottom: 3rem;
        }

        h1 {
            font-weight: 300;
            letter-spacing: 2px;
            font-size: 2.5rem;
        }

        .subtitle {
            color: var(--text-muted);
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 4px;
            margin-top: 10px;
        }

        .grid-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 20px;
            width: 100%;
            max-width: 1100px;
            /* Aumentei um pouco mais para acomodar os novos cards */
        }

        .card {
            background-color: var(--card-bg);
            padding: 2rem;
            border-radius: 12px;
            text-decoration: none;
            color: var(--text-main);
            transition: all 0.3s ease;
            border: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .card:hover {
            transform: translateY(-5px);
            background-color: #263346;
            border-color: var(--accent);
            box-shadow: var(--hover-shadow);
        }

        .icon-box {
            font-size: 2.5rem;
            color: var(--accent);
            margin-bottom: 1rem;
        }

        .card h3 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
        }

        .card p {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        footer {
            margin-top: 4rem;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        footer a {
            color: var(--accent);
            text-decoration: none;
            transition: 0.2s;
        }

        footer a:hover {
            text-decoration: underline;
            color: #fff;
        }

        @media (max-width: 600px) {
            h1 {
                font-size: 2rem;
            }
        }