/* 首页Banner */
.index-banner{
    width: 100%;
    height: 500px;
    background: url('https://picsum.photos/1920/1080?random=20') center/cover no-repeat;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.index-banner::before{
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,51,102,0.6);
}
.banner-content{
    position: relative;
    color: #fff;
    max-width: 800px;
    padding: 0 20px;
}
.banner-content h2{
    font-size: 42px;
    margin-bottom: 20px;
    line-height: 1.2;
}
.banner-content p{
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.95;
}
.banner-btn{
    display: inline-block;
    padding: 12px 30px;
    background: #fff;
    color: #003366;
    font-size: 16px;
    font-weight: 500;
    border-radius: 4px;
    transition: 0.3s;
    text-decoration: none;
}
.banner-btn:hover{
    background: #00509e;
    color: #fff;
}

/* 学校简介 */
.intro{
    padding: 80px 0;
    background: #f8f9fa;
}
.intro .container{
    display: flex;
    align-items: center;
    gap: 50px;
}
.intro-img{
    flex: 1;
    border-radius: 8px;
    overflow: hidden;
}
.intro-img img{
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.intro-text{
    flex: 1;
}
.intro-text h3{
    font-size: 28px;
    color: #003366;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 3px solid #003366;
    display: inline-block;
}
.intro-text p{
    font-size: 16px;
    line-height: 1.8;
    color: #333;
    margin-bottom: 15px;
}

/* 核心专业 */
.major{
    padding: 80px 0;
}
.major-list{
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}
.major-item{
    background: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 25px;
    transition: 0.3s;
    text-align: center;
}
.major-item:hover{
    box-shadow: 0 5px 15px rgba(0,51,102,0.1);
    transform: translateY(-5px);
}
.major-item h4{
    font-size: 20px;
    color: #003366;
    margin-bottom: 15px;
}
.major-item p{
    font-size: 14px;
    line-height: 1.6;
    color: #666;
}

/* 办学优势 */
.advantage{
    padding: 80px 0;
    background: #003366;
    color: #fff;
}
.advantage .section-title{
    color: #fff;
    border-color: #fff;
}
.advantage-list{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
    text-align: center;
}
.advantage-item{
    padding: 30px 20px;
}
.advantage-item h4{
    font-size: 20px;
    margin-bottom: 15px;
}
.advantage-item p{
    font-size: 14px;
    line-height: 1.6;
    opacity: 0.9;
}

/* 响应式适配 */
@media(max-width:768px){
    .index-banner{
        height: 350px;
    }
    .banner-content h2{
        font-size: 30px;
    }
    .intro .container{
        flex-direction: column;
        gap: 30px;
    }
    .major-list{
        grid-template-columns: repeat(2, 1fr);
    }
    .advantage-list{
        grid-template-columns: repeat(2, 1fr);
    }
}
@media(max-width:480px){
    .index-banner{
        height: 280px;
    }
    .banner-content h2{
        font-size: 24px;
    }
    .major-list{
        grid-template-columns: 1fr;
    }
    .advantage-list{
        grid-template-columns: 1fr;
    }
}