body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #333;
}

header {
    background: linear-gradient(to right, rgba(52, 152, 219, 0.8), rgba(155, 89, 182, 0.8));
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav ul {
    list-style-type: none;
    padding: 0;
    display: flex;
    justify-content: center;
}

nav ul li {
    margin: 0 1rem;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #f1c40f;
}
.contact-us {
    position: relative;
}

.contact-popup {
    display: none;
    position: absolute;
    background-color: rgba(52, 152, 219, 0.9);
    color: white;
    padding: 0.5rem;
    border-radius: 4px;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}

.contact-us:hover .contact-popup {
    display: block;
}

.waterfall {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.carousel-section {
    width: 100%;
    max-width: 1440px;
    height: 640px;
    overflow: hidden;
    position: relative;
    margin: 0 auto; /* 居中轮播图 */
}

.carousel {
    display: flex;
    transition: transform 0.5s ease-in-out;
    height: 100%;
}

.carousel img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    flex-shrink: 0;
}

@media (max-width: 1440px) {
    .carousel-section {
        height: 44.44vw; /* 保持16:9的宽高比 */
    }
}

.team-section {
    background-color: rgba(255, 255, 255, 0.8);
    padding: 2rem;
    margin: 2rem 0;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    max-width: 800px;
    width: 90%;
}

.team-section h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

footer {
    background: linear-gradient(to right, rgba(52, 152, 219, 0.8), rgba(155, 89, 182, 0.8));
    color: white;
    text-align: center;
    padding: 1rem;
    margin-top: 1rem;
}

@media (max-width: 768px) {
    .team-section {
        padding: 1rem;
    }
}