/* 渐变段落类名 */
.grad-x1 { 
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%); 
    color: #4a4a4a; 
    border-left: 5px solid #6c5ce7; 
    padding: 20px; 
    border-radius: 12px; 
    margin: 20px 0; 
    line-height: 1.8; 
    transition: all 0.3s ease; 
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.grad-x1:hover { 
    transform: translateY(-5px); 
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.grad-x2 { 
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%); 
    color: #4a4a4a; 
    border-left: 5px solid #4a69bd; 
    padding: 20px; 
    border-radius: 12px; 
    margin: 20px 0; 
    line-height: 1.8; 
    transition: all 0.3s ease; 
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.grad-x2:hover { 
    transform: translateY(-5px); 
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.grad-x3 { 
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%); 
    color: #4a4a4a; 
    border-left: 5px solid #e17055; 
    padding: 20px; 
    border-radius: 12px; 
    margin: 20px 0; 
    line-height: 1.8; 
    transition: all 0.3s ease; 
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.grad-x3:hover { 
    transform: translateY(-5px); 
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.grad-x4 { 
    background: linear-gradient(135deg, #84fab0 0%, #8fd3f4 100%); 
    color: #4a4a4a; 
    border-left: 5px solid #00b894; 
    padding: 20px; 
    border-radius: 12px; 
    margin: 20px 0; 
    line-height: 1.8; 
    transition: all 0.3s ease; 
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.grad-x4:hover { 
    transform: translateY(-5px); 
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

/* 提示框类名 */
.tip-bx { 
    background: linear-gradient(135deg, #ffeaa7 0%, #fab1a0 100%); 
    padding: 20px; 
    border-radius: 10px; 
    margin: 30px 0; 
    border-left: 5px solid #e17055; 
    position: relative;
}

.tip-bx::before { 
    content: '提示'; 
    position: absolute; 
    top: -12px; 
    left: 20px; 
    background: #e17055; 
    color: #fff; 
    padding: 5px 15px; 
    border-radius: 20px; 
    font-size: 0.9rem; 
    font-weight: bold;
}