body {
    font-family: "Microsoft YaHei", sans-serif;
}

.banner {
    height: 60vh;
    min-height: 300px;
    max-height: 600px;
    background: linear-gradient(135deg, #007bff, #6610f2);
    padding-top: 56px;
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image: 
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='11' width='18' height='11' rx='2' ry='2'%3E%3C/rect%3E%3Cpath d='M7 11V7a5 5 0 0 1 10 0v4'%3E%3C/path%3E%3C/svg%3E"),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='70' height='70' viewBox='0 0 24 24' fill='none' stroke='rgba(255,255,255,0.03)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z'%3E%3C/path%3E%3C/svg%3E");
    background-position: 0 0, 200px 200px;
    background-size: 400px 400px;
    animation: moveBackground 80s linear infinite;
}

@keyframes moveBackground {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(400px, 400px);
    }
}

.banner h1 {
    font-size: 3.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    position: relative;
    z-index: 1;
}

.banner .lead {
    font-size: 1.3rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    position: relative;
    z-index: 1;
}

.banner .btn {
    position: relative;
    z-index: 1;
    transition: all 0.3s ease;
}

.banner .btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

@media (max-width: 768px) {
    .banner {
        height: 50vh;
    }

    .banner h1 {
        font-size: 2.5rem;
    }

    .banner .lead {
        font-size: 1.1rem;
    }
}

/* 在现有样式的基础上添加以下内容 */

.card-description {
    margin-top: 1rem;
    margin-bottom: 1.5rem;
}

.card-description p {
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.feature-list {
    list-style-type: none;
    padding-left: 0;
}

.feature-list li {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.feature-list i {
    margin-right: 0.5rem;
}

.card .btn {
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* 在文件末尾添加以下样式 */

.filter-btn {
    margin-bottom: 10px;
}

.filter-btn.active {
    background-color: #0d6efd;
    color: white;
}

.product-item {
    transition: all 0.3s ease;
}