/* 前台样式 · 仿虎嗅信息流 + 阅读页排版 */
:root{
  --accent:#e0442e;
  --text:#222;
  --muted:#8a8a8a;
  --line:#ececec;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:15px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--text);background:#fff}
a{color:inherit;text-decoration:none}
img{border:0;display:block}
/* 内容容器：限宽 1280 居中；header/footer/页面底色均为通栏 100%，不受此宽度约束 */
.wrap{max-width:1280px;margin:0 auto;padding:0 24px}

/* header */
.site-hd{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 1px 2px rgba(0,0,0,.04)}
.site-hd-in{display:flex;align-items:center;gap:28px;height:56px;flex-wrap:nowrap}
.logo{display:flex;align-items:center;gap:6px;white-space:nowrap}
.logo img{height:40px;width:auto;display:block}
.cats{display:flex;gap:2px;overflow-x:auto;flex:1;min-width:0;scrollbar-width:none}
.cats::-webkit-scrollbar{display:none}
.cat{font-size:14px;color:#444;padding:6px 11px;border-radius:5px;white-space:nowrap}
.cat:hover{color:var(--accent)}
.cat.on{color:#fff;background:var(--accent)}
.search{flex:none}
.search input{width:190px;border:1px solid #ddd;border-radius:16px;padding:6px 14px;font-size:13px;outline:none}
.search input:focus{border-color:var(--accent)}

.crumb{color:var(--muted);font-size:13px;margin:16px 0 0}

/* feed grid */
.feed{margin-top:16px;display:grid;grid-template-columns:repeat(4,1fr);gap:22px 20px}
.post{display:block;padding:0;border-bottom:none}
.post:hover .post-title{color:var(--accent)}
.post-img{width:100%;height:0;padding-bottom:62.5%;position:relative;overflow:hidden;border-radius:6px;background:#f2f2f2}
.post-img img{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;transition:transform .25s}
.post:hover .post-img img{transform:scale(1.04)}
.post-bd{padding:12px 0 6px}
.post-title{font-size:16px;line-height:1.45;margin:0 0 8px;font-weight:600;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-digest{display:none}
.post-meta{margin-top:0;font-size:12px;color:var(--muted);display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.post-meta .tag{color:var(--accent);border:1px solid #f3c7bf;border-radius:3px;padding:0 6px;line-height:18px}
.post-meta .date{color:#aaa}

/* pager */
.pager{display:flex;justify-content:center;gap:6px;padding:26px 0 34px}
.pager a,.pager .cur{min-width:32px;height:32px;line-height:30px;text-align:center;border:1px solid var(--line);border-radius:4px;font-size:14px;padding:0 4px}
.pager a:hover{border-color:var(--accent);color:var(--accent)}
.pager .cur{background:var(--accent);border-color:var(--accent);color:#fff}

/* empty */
.empty{text-align:center;color:var(--muted);padding:90px 0}
.empty p{font-size:16px;margin:4px 0}
.empty .sub{font-size:13px;color:#aaa}

/* article detail */
.article{max-width:900px;margin:26px auto 0;padding:0 4px}
.art-tag{display:inline-block;color:var(--accent);font-size:13px;border:1px solid #f3c7bf;border-radius:3px;padding:1px 8px}
.art-title{font-size:30px;line-height:1.35;margin:14px 0 12px;font-weight:700}
.art-meta{color:var(--muted);font-size:13px;display:flex;gap:14px;border-bottom:1px solid var(--line);padding-bottom:16px}
.art-meta .src{color:#444}
.art-cover{margin:20px auto 8px;max-width:740px}
.art-cover img{width:100%;border-radius:6px}

.rich_media_content{font-size:17px;line-height:1.85;color:#2b2b2b;overflow-wrap:break-word;word-break:break-word}
.rich_media_content p{margin:1.1em 0}
.rich_media_content img{max-width:100%!important;height:auto!important;margin:16px auto;border-radius:4px}
.rich_media_content section,.rich_media_content span{max-width:100%}
.rich_media_content section{overflow-wrap:break-word}
.rich_media_content a{color:var(--accent)}
.rich_media_content blockquote{margin:1.2em 0;padding:4px 16px;border-left:3px solid var(--accent);color:#555;background:#fafafa}
.rich_media_content pre,.rich_media_content code{font-family:Menlo,Consolas,monospace;font-size:14px;background:#f5f5f5;border-radius:4px}
.rich_media_content pre{padding:12px 14px;overflow-x:auto;line-height:1.5}
.rich_media_content h1,.rich_media_content h2,.rich_media_content h3{margin:1.4em 0 .6em;line-height:1.4}

.art-pending{background:#faf6f0;border:1px dashed #e5d5b8;border-radius:8px;padding:28px;text-align:center;color:#7a6a4d;margin:24px 0}
.art-pending p{margin:6px 0}
.art-pending .sub{font-size:13px;color:#a8967a}
.art-origin{margin:10px 0 0}
.art-origin a{color:var(--accent);font-size:14px}

.related{max-width:900px;margin:34px auto 0;border-top:1px solid var(--line);padding-top:20px}
.related h3{font-size:16px;margin:0 0 10px}
.related ul{list-style:none;margin:0;padding:0}
.related li{display:flex;justify-content:space-between;gap:14px;padding:8px 0;border-bottom:1px dashed #f2f2f2;font-size:15px}
.related li a:hover{color:var(--accent)}
.related .date{color:#aaa;font-size:12px;white-space:nowrap}

/* footer */
.site-ft{border-top:1px solid var(--line);margin-top:44px;padding:26px 0;color:#aaa;font-size:13px;text-align:center}

/* tablet */
@media (max-width:900px){
  .feed{grid-template-columns:repeat(2,1fr)}
}

/* mobile */
@media (max-width:680px){
  .wrap{padding:0 16px}
  .site-hd-in{flex-wrap:wrap;height:auto;padding:10px 0;gap:10px}
  .cats{order:3;flex-basis:100%}
  .search{flex:1}
  .search input{width:100%}
  .feed{grid-template-columns:1fr;gap:18px}
  .post-title{font-size:16px}
  .art-title{font-size:23px}
  .article{padding:0 2px}
}

/* 视觉隐藏（仅供搜索引擎与读屏，避免破坏版式） */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}