* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* 导航栏样式 */
nav {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: #333;
}

.logo span {
    color: #4dabf7;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-links li {
    margin-left: 30px;
    position: relative;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    padding-bottom: 5px;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background-color: #4dabf7;
    bottom: 0;
    left: 0;
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-links a:hover {
    color: #4dabf7;
}

.welcome-text {
    color: #888;
    font-size: 0.9rem;
    font-style: italic;
    margin-left: 40px;
}

/* Banner样式 */
.banner-container {
    width: 100%;
    position: relative;
    overflow: hidden;
    height: 500px;
    margin-top: 0;
}

.banner-slide {
    width: 100%;
    height: 100%;
    position: absolute;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    padding: 0 20px;
}

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

.banner-content {
    max-width: 1200px;
    padding: 40px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    animation: fadeInUp 1s ease-out;
}

.banner-content h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.banner-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    line-height: 1.6;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: #ff6b6b;
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: bold;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn:hover {
    background-color: transparent;
    border-color: #ff6b6b;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.banner-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
}

.dot {
    width: 12px;
    height: 12px;
    margin: 0 8px;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background-color: white;
    transform: scale(1.3);
}

.banner-nav {
    position: absolute;
    top: 50%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    transform: translateY(-50%);
}

.nav-btn {
    color: white;
    font-size: 2rem;
    cursor: pointer;
    opacity: 0.7;
    transition: all 0.3s ease;
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

.nav-btn:hover {
    opacity: 1;
    transform: scale(1.2);
}

 /* 底部样式 */
 footer {
    background-color: white;
    color: #333;
    text-align: center;
    padding: 20px 0;
    border-top: 1px solid #eaeaea;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.copyright {
    margin-bottom: 10px;
    font-size: 14px;
}

.social-links {
    margin-bottom: 15px;
}

.social-links a {
    color: #555;
    margin: 0 10px;
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}

.social-links a:hover {
    color: #000;
}

.footer-links {
    margin-top: 10px;
}

.footer-links a {
    color: #666;
    margin: 0 10px;
    text-decoration: none;
    font-size: 13px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #000;
    text-decoration: underline;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        padding: 10px;
    }
    
    .logo {
        margin-bottom: 10px;
    }
    
    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav-links li {
        margin: 5px 15px;
    }
    
    .welcome-text {
        display: none;
    }
    
    .banner-container {
        height: 400px;
    }
    
    .banner-content h2 {
        font-size: 2rem;
    }
    
    .banner-content p {
        font-size: 1rem;
    }
    
    .btn {
        padding: 10px 20px;
    }
}

@media (max-width: 480px) {
    .banner-container {
        height: 300px;
    }
    
    .banner-content {
        padding: 20px;
    }
    
    .banner-content h2 {
        font-size: 1.5rem;
    }
}