/* ===== 首页卡片容器收窄 ===== */
#home-cards{max-width:1080px;margin:0 auto;padding:20px;}
#home-cards .cards{display:block}
#home-cards .card{background:#fff;border-radius:10px;box-shadow:0 2px 8px rgba(0,0,0,.05);margin-bottom:20px;padding:20px}
#home-cards .card h3{margin:0 0 8px;font-size:22px}
#home-cards .card .sub{margin:0 0 12px;color:#666}
#home-cards .card .btn{display:inline-block;padding:8px 14px;border:1px solid #ddd;border-radius:8px;text-decoration:none}

/* 响应式：窄屏铺满，留一点左右内边距 */
@media (max-width: 1024px){
  #home-cards{max-width:92vw;padding:16px}
  #home-cards .card{padding:16px}
}
/* === 首页卡片容器左右对齐导航栏 === */
#home-cards {
  max-width: 1200px;   /* 最大宽度，和导航栏一致 */
  margin: 0 auto;      /* 居中 */
  padding: 0 20px;     /* 左右留白 */
}