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

/* 导航样式 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    padding: 1rem 5%;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    max-width: 1200px;
    margin: 0 auto;
    margin-top: 30px;
    margin-bottom: 100px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: white;
    margin-right: 190px;

}

.nav-links {
    display: flex;
    gap: 2rem;
}

/* 主内容区 */
.hero {
    height: 50vh;
    /* background: linear-gradient(135deg, #1a73e8, #0d47a1); */
    background-image: url(../zsyx.png);
    background-repeat: no-repeat;
    background-size: cover;
    display: flex;
    align-items: center;
    flex-direction: column;
    /* padding: 0 5%;
    margin-top: 60px; */
}

.hero-content {
    max-width: 95%;
    margin: 0 auto;
    color: yellow;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-button {
    padding: 1rem 2rem;
    background: white;
    color: #1a73e8;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: transform 0.3s;
}

.cta-button:hover {
    transform: translateY(-3px);
}

/* 核心功能区块 */
.features {
    padding: 5rem 5%;
    background: #f8f9fa;
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
 
/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
}
/*补充*/
a{
    margin-right: 30px !important;
    
    text-decoration: none;
    outline: none;
    color:white;
}
a:hover{
   
    /* background-color: rgb(139, 242, 240); */
    color:yellow
}
/*bottom*/

/* 基础样式 */
.site-footer {
    background-color: black;
    color: #ecf0f1;
    padding: 40px 0 20px;
    margin-top: 10px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    padding: 0 10px;

}

.footer-section {
    flex: 1;
    min-width: 250px;
    margin: 15px;
}

.footer-section h3, .footer-section h4 {
    color: #f1c40f;
    margin-bottom: 15px;
}

.footer-links li, .contact-info li {
    list-style: none;
    margin: 8px 0;
}

.footer-links a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #f1c40f;
}

.contact-info i {
    margin-right: 10px;
    width: 20px;
}

.social-media {
    display: flex;
    gap: 15px;
}

.social-media a {
    color: #ecf0f1;
    font-size: 24px;
    transition: color 0.3s;
}

.social-media a:hover {
    color: #f1c40f;
}

.copyright {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid #34495e;
    font-size: 0.9em;
    color: #bdc3c7;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .social-media {
        justify-content: center;
    }

    .contact-info i {
        margin-right: 0;
        display: block;
        margin-bottom: 5px;
    }
}
.selected {
    border-bottom: 1px solid darkblue;
    
}