* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: #333;
    line-height: 1.7;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.page-header {
    background: #2c3e50;
    color: #fff;
    padding: 60px 0;
    text-align: center;
}
.page-header h1 {
    font-size: 42px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: 1px;
}
.page-header p {
    font-size: 18px;
    opacity: 0.85;
    max-width: 700px;
    margin: 0 auto;
}

/* 案例列表 */
.case-list-section {
    padding: 60px 0;
}
.case-grid {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    gap:30px;
}
.case-card {
    background:#fff;
    border-radius:10px;
    box-shadow:0 3px 12px rgba(0,0,0,0.07);
    overflow:hidden;
    transition:0.3s;
}
.case-card:hover{
    transform: translateY(-6px);
    box-shadow:0 8px 20px rgba(0,0,0,0.1);
}
.case-card img{
    width:100%;
    height:240px;
    object-fit:cover;
}
.no-img{
    height:240px;
    background:#eee;
    display:flex;
    align-items:center;
    justify-content:center;
    color:#777;
}
.case-card-body{
    padding:20px;
}
.case-card-body h3 a{
    text-decoration:none;
    color:#222;
    font-size:18px;
}
.client {
    color:#666;
    font-size:14px;
    margin:8px 0;
}
.short-desc{
    color:#555;
    margin:12px 0;
    font-size:15px;
}
.btn-more{
    color:#2c3e50;
    font-weight:600;
    text-decoration:none;
}
.empty-tip{
    text-align:center;
    padding:60px 0;
    font-size:18px;
}

/* 案例详情 */
.case-detail-section{
    padding:60px 0;
}
.detail-row{
    display:grid;
    grid-template-columns: 1fr 1fr;
    gap:40px;
    align-items:start;
}
.detail-gallery .main-img{
    width:100%;
    border-radius:10px;
}
.detail-info h2{
    font-size:30px;
    color:#222;
    margin-bottom:20px;
}
.detail-meta p{
    margin:8px 0;
    font-size:17px;
}
.detail-info .short-desc{
    margin:20px 0 30px;
    font-size:17px;
}
.btn-primary{
    display:inline-block;
    padding:14px 32px;
    background:#2c3e50;
    color:#fff;
    text-decoration:none;
    border-radius:6px;
    font-weight:600;
    transition:background 0.3s;
}
.btn-primary:hover{
    background:#1a2530;
}
.full-desc-block{
    margin-top:50px;
}
.full-desc-block h3{
    font-size:24px;
    color:#2c3e50;
    margin-bottom:16px;
}

/* 响应式适配 */
@media (max-width:992px){
    .case-grid{
        grid-template-columns: repeat(2,1fr);
    }
    .detail-row{
        grid-template-columns:1fr;
    }
}
@media (max-width:576px){
    .page-header h1{
        font-size:30px;
    }
    .case-grid{
        grid-template-columns:1fr;
    }
}