/* 格正官网 频道列表卡片样式（补回 art-grid/art-card 规则） */
.art-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:22px;padding:36px 0 20px}
.art-card{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;transition:box-shadow .2s,transform .2s;display:flex;flex-direction:column}
.art-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.1);transform:translateY(-3px)}
.art-card .cover{height:150px;background:linear-gradient(135deg,#fdf6e8,#f3e7c8);display:flex;align-items:center;justify-content:center;font-size:42px;overflow:hidden}
.art-card .cover img{width:100%;height:100%;object-fit:cover}
.art-card .bd{padding:18px 20px;flex:1;display:flex;flex-direction:column}
.art-card .cat{font-size:12px;color:var(--red);font-weight:600;margin-bottom:8px}
.art-card h3{font-size:17px;line-height:1.5;margin-bottom:8px}
.art-card h3 a{color:var(--ink)}
.art-card h3 a:hover{color:var(--red)}
.art-card .sum{font-size:13.5px;color:var(--ink2);flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.art-card .mt{font-size:12px;color:var(--ink3);margin-top:12px}
@media(max-width:768px){
.art-grid{grid-template-columns:1fr;gap:14px;padding:22px 0 12px}
}