/* 博客前台：黑白灰主调，绿色小面积点缀，适配 375px */
.bg-wrap{max-width:1120px;margin:0 auto;padding:40px 20px 80px;}
.bg-head{margin-bottom:26px;}
.bg-head h1{font-size:30px;margin:0 0 8px;}
.bg-head p{color:#6b6b6b;margin:0;font-size:14.5px;}
.bg-toolbar{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 6px;align-items:center;}
.bg-search{flex:1;min-width:200px;display:flex;gap:8px;}
.bg-search input{flex:1;padding:10px 14px;border:1px solid #e6e6e6;border-radius:10px;font:inherit;font-size:14px;}
.bg-search button{padding:10px 18px;border:1px solid #0d0d0d;background:#0d0d0d;color:#fff;border-radius:10px;font:inherit;font-size:14px;font-weight:700;cursor:pointer;}
.bg-cats{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 26px;}
.bg-cat{padding:7px 14px;border:1px solid #e6e6e6;border-radius:999px;font-size:13px;color:#444;text-decoration:none;background:#fff;}
.bg-cat.on{border-color:#0d0d0d;background:#0d0d0d;color:#fff;}
.bg-cat:hover{border-color:#0d0d0d;}
.bg-sec-title{font-size:19px;margin:34px 0 14px;display:flex;align-items:center;gap:8px;}
.bg-sec-title::before{content:"";width:8px;height:8px;border-radius:50%;background:#00a86b;}
.bg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;}
.bg-card{border:1px solid #e6e6e6;border-radius:14px;overflow:hidden;background:#fff;display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:box-shadow .2s,transform .2s;}
.bg-card:hover{box-shadow:0 14px 34px rgba(0,0,0,.08);transform:translateY(-2px);}
.bg-cover{aspect-ratio:16/9;background:#f4f4f4 center/cover no-repeat;display:block;}
.bg-cover.ph{display:flex;align-items:center;justify-content:center;color:#bbb;font-size:26px;font-weight:900;letter-spacing:2px;}
.bg-card-b{padding:16px 16px 18px;display:flex;flex-direction:column;gap:8px;flex:1;}
.bg-tag{display:inline-block;font-size:12px;color:#00795 0;color:#007a4f;background:#eefaf4;border-radius:6px;padding:3px 8px;width:max-content;}
.bg-card-b h3{font-size:16px;line-height:1.45;margin:0;color:#0d0d0d;}
.bg-card-b p{font-size:13px;color:#6b6b6b;line-height:1.6;margin:0;flex:1;}
.bg-meta{font-size:12px;color:#9a9a9a;display:flex;gap:10px;flex-wrap:wrap;}
.bg-more{font-size:13px;font-weight:700;color:#0d0d0d;}
.bg-more::after{content:" →";}
.bg-pager{display:flex;gap:8px;justify-content:center;margin-top:34px;}
.bg-pager a,.bg-pager span{padding:8px 14px;border:1px solid #e6e6e6;border-radius:10px;font-size:14px;text-decoration:none;color:#0d0d0d;}
.bg-pager .cur{background:#0d0d0d;color:#fff;border-color:#0d0d0d;}
/* 详情页 */
.bg-article{max-width:760px;margin:0 auto;}
.bg-crumb{font-size:13px;color:#9a9a9a;margin-bottom:16px;}
.bg-crumb a{color:#6b6b6b;text-decoration:none;}
.bg-article h1{font-size:28px;line-height:1.35;margin:0 0 12px;}
.bg-article .lede{color:#555;font-size:15px;line-height:1.7;margin:0 0 14px;}
.bg-abstract{border-left:3px solid #00a86b;background:#f8f8f8;padding:12px 16px;border-radius:0 10px 10px 0;font-size:14px;color:#444;margin:18px 0;}
.bg-artmeta{font-size:13px;color:#9a9a9a;display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px;}
.bg-cover-lg{width:100%;border-radius:14px;margin:6px 0 22px;}
.bg-toc{border:1px solid #e6e6e6;border-radius:12px;padding:14px 18px;margin:0 0 26px;background:#fafafa;}
.bg-toc b{font-size:14px;}
.bg-toc ul{margin:8px 0 0;padding-left:18px;}
.bg-toc li{font-size:13.5px;line-height:1.9;}
.bg-toc a{color:#444;text-decoration:none;}
.bg-toc a:hover{color:#00a86b;}
.bg-body{font-size:15.5px;line-height:1.85;color:#222;}
.bg-body h2{font-size:21px;margin:34px 0 12px;padding-bottom:8px;border-bottom:1px solid #eee;}
.bg-body h3{font-size:17px;margin:26px 0 10px;}
.bg-body p{margin:0 0 14px;}
.bg-body a{color:#007a4f;text-decoration:underline;text-underline-offset:3px;}
.bg-body ul,.bg-body ol{margin:0 0 14px;padding-left:24px;}
.bg-body li{margin-bottom:6px;}
.bg-body blockquote{border-left:3px solid #ddd;margin:0 0 14px;padding:6px 16px;color:#555;background:#fafafa;}
.bg-body pre{background:#0d0d0d;color:#eee;border-radius:10px;padding:14px 16px;overflow:auto;font-size:13.5px;line-height:1.6;}
.bg-body code{font-family:ui-monospace,Consolas,monospace;font-size:.92em;background:#f2f2f2;border-radius:4px;padding:1px 5px;}
.bg-body pre code{background:none;padding:0;}
.bg-tablewrap{overflow-x:auto;margin:0 0 14px;}
.bg-body table{border-collapse:collapse;width:100%;font-size:14px;}
.bg-body th,.bg-body td{border:1px solid #e6e6e6;padding:9px 12px;text-align:left;}
.bg-body th{background:#f6f6f6;}
.bg-body img{max-width:100%;border-radius:10px;}
.bg-verify{font-size:12.5px;color:#9a9a9a;margin:26px 0 0;padding-top:14px;border-top:1px dashed #e6e6e6;}
/* 实时价格组件与站内按钮 */
.bg-price-widget{display:inline-flex;align-items:baseline;gap:6px;background:#f6faf8;border:1px solid #d7ede3;border-radius:10px;padding:6px 12px;font-size:14px;}
.bg-price-widget b{font-size:18px;color:#0d0d0d;}
.bg-price-widget em{font-style:normal;font-size:12px;color:#007a4f;}
.bg-cta-btn{display:inline-block;background:#0d0d0d;color:#fff !important;text-decoration:none !important;border-radius:10px;padding:10px 20px;font-size:14px;font-weight:700;margin:4px 0;}
.bg-cta-btn:hover{background:#000;}
.bg-related{margin-top:40px;}
.bg-related h2{font-size:19px;margin:0 0 14px;}
.bg-prevnext{display:flex;gap:14px;margin-top:30px;}
.bg-prevnext a{flex:1;border:1px solid #e6e6e6;border-radius:12px;padding:14px 16px;text-decoration:none;color:#0d0d0d;font-size:14px;}
.bg-prevnext a small{display:block;color:#9a9a9a;font-size:12px;margin-bottom:4px;}
.bg-share{margin-top:26px;display:flex;gap:10px;align-items:center;font-size:13.5px;color:#6b6b6b;}
.bg-share button{padding:8px 14px;border:1px solid #e6e6e6;background:#fff;border-radius:10px;font:inherit;font-size:13px;cursor:pointer;}
.bg-back{display:inline-block;margin-top:26px;font-size:14px;color:#0d0d0d;text-decoration:none;font-weight:700;}
@media(max-width:900px){.bg-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:600px){
  .bg-grid{grid-template-columns:1fr;}
  .bg-wrap{padding:26px 16px 60px;}
  .bg-article h1{font-size:23px;}
  .bg-prevnext{flex-direction:column;}
}