/* Banner样式 */
.banner-container {
    width: 100%;
    height: 100vh;
    position: relative;
    overflow: hidden;
    background-color: #1a365d;
}

.banner-slide {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    background-size: cover;
    background-position: center;
}

.banner-slide.active {
    opacity: 1;
}

/* 确保内容放在banner上面 */
.banner-content {
    position: relative;
    z-index: 10;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    text-align: center;
}

/* 确保banner文本可见性 */
.banner-content h1, .banner-content p {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}