* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}
:root {
    --primary: #0052cc;
    --primary-light: #1a73e8;
    --dark: #0f172a;
    --gray: #64748b;
    --light: #f8fafc;
}
/*导航栏 与首页样式统一*/
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    padding: 18px 6%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    z-index: 999;
}
.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--dark);
}
.logo span {
    color: var(--primary);
}
.nav-menu {
    display: flex;
    gap: 36px;
    list-style: none;
}
.nav-menu a {
    text-decoration: none;
    color: var(--dark);
    font-size: 16px;
    font-weight: 500;
    transition: 0.3s;
}
.nav-menu a:hover,.nav-menu a.active {
    color: var(--primary);
}
/*注塑页面专属头部banner*/
.zs-banner{
    margin-top:80px;
    padding:120px 6%;
    background:linear-gradient(135deg,#0f172a,#233554);
    color:#fff;
}
.zs-banner h1{
    font-size:42px;
    margin-bottom:12px;
}
.zs-banner .en-title{
    font-size:20px;
    font-weight:400;
    color:#cbd5e1;
    margin-bottom:20px;
    letter-spacing:1px;
}
.zs-banner p{
    font-size:17px;
    color:#cbd5e1;
    max-width:800px;
    line-height:1.8;
}
/*通用区块间距*/
.section{
    padding:80px 6%;
}
.title{
    text-align:center;
    margin-bottom:50px;
}
.title h2{
    font-size:34px;
    color:var(--dark);
    margin-bottom:8px;
}
.title .en-title{
    font-size:18px;
    color:var(--primary);
    margin-bottom:10px;
    font-weight:500;
    letter-spacing:0.5px;
}
.title p{
    color:var(--gray);
    max-width:700px;
    margin:0 auto;
}
/*注塑方案卡片布局*/
.scheme-wrap{
    display:grid;
    grid-template-columns: repeat(auto-fit,minmax(320px,1fr));
    gap:32px;
}
.scheme-card{
    border:1px solid #e7edf7;
    border-radius:16px;
    overflow:hidden;
    transition:0.3s;
    background:#fff;
}
.scheme-card:hover{
    transform:translateY(-6px);
    box-shadow:0 12px 35px rgba(0,82,204,0.1);
}
.card-top {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f3f7fd;
}
.card-top img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.card-body{
    padding:26px;
}
.card-body h3{
    font-size:20px;
    color:#0f172a;
    margin-bottom:6px;
}
.card-body .en-title{
    font-size:14px;
    color:var(--primary);
    margin-bottom:12px;
}
.card-body p{
    color:#64748b;
    line-height:1.75;
    font-size:15px;
}
/*系统介绍左右分栏*/
.intro-row{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:50px;
    align-items:center;
}
.intro-text h3{
    font-size:26px;
    color:#0f172a;
    margin-bottom:8px;
}
.intro-text .en-title{
    font-size:18px;
    color:var(--primary);
    margin-bottom:16px;
    font-weight:500;
}
.intro-text p{
    line-height:1.8;
    color:#555;
    margin-bottom:12px;
}
.intro-img {
    height: 380px;
    border-radius: 14px;
    overflow: hidden;
}
.intro-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
/*底部样式和首页统一*/
.footer {
    background: var(--dark);
    color: #cbd5e1;
    padding: 60px 6% 30px;
}
.footer-bottom {
    text-align: center;
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 14px;
    line-height:1.8;
}
.footer-bottom a{
    color:#73a9ff;
    text-decoration:none;
}

/*响应式适配*/
@media screen and (max-width:1200px){
    .intro-row{
        grid-template-columns:1fr;
        gap:35px;
    }
}
@media screen and (max-width:768px) {
    .navbar{
        flex-direction:column;
        gap:14px;
        padding:14px 4%;
    }
    .nav-menu{
        flex-wrap:wrap;
        justify-content:center;
        gap:18px;
    }
    .zs-banner{
        margin-top:115px;
        padding:70px 4%;
    }
    .zs-banner h1{
        font-size:28px;
    }
    .zs-banner .en-title{
        font-size:16px;
    }
    .section{
        padding:45px 4%;
    }
    .title h2{
        font-size:26px;
    }
    .scheme-wrap{
        grid-template-columns:1fr;
    }
    .intro-img{
        height:250px;
    }
    .card-top{
        height:140px;
    }
}