.stack-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 2rem;
            margin-top: 2rem;
        }

        .stack-card {
            background: var(--secondary);
            padding: 2rem;
            border-radius: 12px;
            border: 1px solid var(--border-color);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .stack-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
            border-color: var(--accent);
        }

        .stack-card h3 {
            color: var(--fg);
            margin-bottom: 0.5rem;
            font-size: 1.4rem;
        }

        .stack-card p {
            color: var(--fg-muted);
            flex-grow: 1;
            font-size: 0.95rem;
        }

        .stack-link {
            margin-top: 1rem;
            color: var(--accent);
            text-decoration: none;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
        }

        .stack-link:hover {
            text-decoration: underline;
        }

        .section-title {
            margin-top: 4rem;
            margin-bottom: 1rem;
            border-bottom: 2px solid var(--accent);
            display: inline-block;
            padding-bottom: 5px;
        }