/* Design 4: Dark Theme Card */
.partner-card-4 {
    background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    padding: 35px;
    border-radius: 16px;
    max-width: 520px;
    margin: 30px auto;
    position: relative;
    overflow: hidden;
}

    .partner-card-4::before {
        content: '';
        position: absolute;
        width: 200px;
        height: 200px;
        background: radial-gradient(circle, rgba(76, 175, 80, 0.1) 0%, transparent 70%);
        top: -50px;
        right: -50px;
        border-radius: 50%;
    }

.dark-card h3 {
    color: white;
    font-size: 1.9rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.highlight {
    background: linear-gradient(90deg, #4caf50, #8bc34a);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dark-card p {
    color: #b0b0b0;
    margin-bottom: 30px;
    line-height: 1.6;
    font-size: 1.05rem;
}

.btn-container {
    display: flex;
    gap: 20px;
    justify-content: center;
}

.dark-btn {
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    min-width: 160px;
    text-align: center;
}

    .dark-btn.green {
        background: linear-gradient(135deg, #4caf50, #2e7d32);
        color: white;
    }

    .dark-btn.orange {
        background: linear-gradient(135deg, #ff9800, #f57c00);
        color: white;
    }

    .dark-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 20px rgba(0,0,0,0.3);
        letter-spacing: 0.5px;
    }

/* Mobile */
@media (max-width: 550px) {
    .partner-card-4 {
        padding: 25px 20px;
        margin: 20px 15px;
    }

    .btn-container {
        flex-direction: column;
    }

    .dark-btn {
        min-width: 100%;
    }
}