/* 首页横幅 */
.banner {
    position: relative;
    margin-bottom: 60px;
    border-radius: 8px;
    overflow: hidden;
}

.banner img {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.banner-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    width: 80%;
}

.banner-text h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: #fff;
}

.banner-text p {
    font-size: 24px;
}

/* 特色板块 */
.features {
    padding: 40px 0;
}

.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 40px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-item img {
    width: 120px;
    height: 120px;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.feature-item p {
    color: #666;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .banner img {
        height: 300px;
    }

    .banner-text h1 {
        font-size: 32px;
    }

    .banner-text p {
        font-size: 18px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }
}