/* 文章页（/blog/）样式：和主站同一套视觉——同样的顶栏、配色、字体、文档式正文。
   独立一份轻量样式，不再加载主站那份大样式文件，打开更快。 */
:root{
  color-scheme:light;
  --bg-deep:#fff;--bg-card:#fff;--bg-card-subtle:#f9f9f9;
  --text-pure:#171717;--text-regular:#414141;--text-muted:#737373;--text-faint:#999;
  --line-light:#e8e8e8;--accent-blue:#295fb7;--accent-blue-soft:rgba(41,95,183,.08);
  --bar-bg:rgba(255,255,255,.34);--bar-line:rgba(205,215,230,.7);
  --font-text:-apple-system,BlinkMacSystemFont,'Geist','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono',Consolas,monospace;
}
html.theme-dark{
  color-scheme:dark;
  --bg-deep:#101925;--bg-card:#181818;--bg-card-subtle:#202020;
  --text-pure:#ececec;--text-regular:#ccc;--text-muted:#888;--text-faint:#666;
  --line-light:#262626;--accent-blue:#4d82db;--accent-blue-soft:rgba(77,130,219,.16);
  --bar-bg:rgba(16,25,37,.4);--bar-line:rgba(111,132,161,.28);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:auto;-webkit-text-size-adjust:100%;text-size-adjust:100%;background:var(--bg-deep)}
body{background:var(--bg-deep);color:var(--text-pure);font:16px/1.6 var(--font-text);-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}
a{color:inherit}
button{font:inherit}

/* 顶栏 */

/* 主体 */
.bl-main{flex:1 0 auto;width:100%;max-width:1060px;margin:0 auto;padding:44px 28px 72px}
.bl-crumb{font-size:14px;color:var(--text-muted);margin-bottom:18px}
.bl-crumb a{color:var(--text-muted);text-decoration:none}
.bl-crumb a:hover{color:var(--accent-blue)}
.bl-doc{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:56px;align-items:start}
.bl-article{max-width:720px;min-width:0;color:var(--text-regular)}
.bl-article h1{margin:0 0 14px;font-size:38px;line-height:1.28;color:var(--text-pure)}
html.theme-dark .bl-article h1,html.theme-dark .bl-content h2{color:#cdd6e4}
.bl-meta{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;font-size:14px;color:var(--text-muted)}
.bl-cover{display:block;width:100%;border-radius:14px;margin-bottom:28px}
.bl-content{font-size:16.5px;line-height:1.95}
.bl-content h2{position:relative;margin:44px 0 16px;font-size:26px;line-height:1.35;color:var(--text-pure);scroll-margin-top:92px}
.bl-content h3{margin:30px 0 12px;font-size:20px;line-height:1.4;color:var(--text-pure);scroll-margin-top:92px}
.bl-content p{margin:0 0 18px}
.bl-content ul,.bl-content ol{margin:0 0 22px;padding-left:26px}
.bl-content li{margin:0 0 10px}
.bl-content li::marker{color:var(--text-muted)}
.bl-content a{color:var(--accent-blue);text-decoration:underline;text-underline-offset:3px}
.bl-content a:hover{opacity:.8}
.bl-content strong{color:var(--text-pure);font-weight:650}
.bl-content img{max-width:100%;height:auto;border-radius:10px}
.bl-content hr{border:0;border-top:1px solid var(--line-light);margin:40px 0 34px}
.bl-content blockquote{margin:0 0 20px;padding:4px 0 4px 18px;border-left:3px solid var(--line-light);color:var(--text-muted)}
.bl-content code{font-family:var(--font-mono);font-size:.9em;background:var(--bg-card-subtle);padding:2px 6px;border-radius:5px}
.bl-content pre{margin:0 0 20px;padding:14px 16px;overflow:auto;background:var(--bg-card-subtle);border-radius:10px;line-height:1.7}
.bl-content pre code{background:none;padding:0}
.bl-content table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse;margin:0 0 22px;font-size:15px}
.bl-content th,.bl-content td{border:1px solid var(--line-light);padding:8px 12px;text-align:left}
.bl-anchor{position:absolute;left:-1.15em;top:0;width:1em;text-align:center;color:var(--accent-blue)!important;text-decoration:none!important;font-weight:500;opacity:0;transition:opacity .15s}
.bl-content h2:hover .bl-anchor,.bl-anchor:focus-visible{opacity:1}

/* 目录 */
.bl-toc{position:sticky;top:96px;border-left:1px solid var(--line-light);padding:2px 0 2px 22px;display:flex;flex-direction:column;gap:14px}
.bl-toc-t{font-size:16px;font-weight:650;color:var(--text-pure)}
.bl-toc a{display:block;max-width:100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:15px;color:var(--text-muted);text-decoration:none;transition:color .15s}
.bl-toc a:hover{color:var(--accent-blue)}
.bl-toc a.is-active{color:var(--text-pure)}
.bl-toc::after{content:"";position:absolute;left:-1px;top:var(--spy-y,0);height:var(--spy-h,0);width:2px;border-radius:2px;background:var(--accent-blue);opacity:0;transition:top .2s,height .2s,opacity .15s}
.bl-toc.has-active::after{opacity:1}

/* 文末：FAQ / 标签 / 引导 / 上下篇 */
.bl-faq{margin-top:44px;padding-top:32px;border-top:1px solid var(--line-light)}
.bl-faq h2{margin:0 0 18px;font-size:24px;color:var(--text-pure)}
.bl-faq-item{margin-bottom:20px}
.bl-faq-item h3{margin:0 0 6px;font-size:17px;color:var(--text-pure)}
.bl-faq-item p{font-size:15.5px;line-height:1.8;color:var(--text-regular)}
.bl-tags{margin-top:28px}
.bl-tag{display:inline-block;margin:0 8px 8px 0;padding:3px 11px;border-radius:999px;background:var(--accent-blue-soft);color:var(--accent-blue);font-size:13px;text-decoration:none}
.bl-tag:hover{opacity:.8}
.bl-cta{margin-top:30px;padding:22px 24px;border-radius:14px;background:var(--accent-blue-soft);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.bl-cta-t{font-size:15.5px;font-weight:600;color:var(--text-pure)}
.bl-cta-b{padding:10px 18px;border-radius:10px;background:var(--accent-blue);color:#fff;font-size:14px;font-weight:600;text-decoration:none;white-space:nowrap}
.bl-cta-b:hover{opacity:.9}
.bl-pager{display:flex;justify-content:space-between;gap:16px;margin-top:44px;padding-top:36px;border-top:1px solid var(--line-light)}
.bl-pg{display:flex;flex-direction:column;gap:4px;width:min(46%,300px);padding:14px 20px;border:1px solid var(--line-light);border-radius:12px;text-decoration:none;transition:border-color .15s}
.bl-pg:hover{border-color:var(--accent-blue)}
.bl-pg span{font-size:14px;color:var(--text-muted)}
.bl-pg b{font-size:16px;font-weight:500;line-height:1.5;color:var(--accent-blue)}
.bl-pg-next{margin-left:auto;align-items:flex-end;text-align:right}

/* 列表页 */
.bl-list{max-width:760px}
.bl-list h1{margin:0 0 28px;font-size:34px;line-height:1.3;color:var(--text-pure)}
.bl-item{padding:24px 0;border-bottom:1px solid var(--line-light)}
.bl-item:first-of-type{padding-top:0}
.bl-item a.t{font-size:20px;font-weight:700;line-height:1.5;color:var(--text-pure);text-decoration:none}
.bl-item a.t:hover{color:var(--accent-blue)}
.bl-item .ex{margin:8px 0 6px;font-size:15px;line-height:1.8;color:var(--text-muted)}
.bl-item .dt{font-size:13px;color:var(--text-faint)}
.bl-item .bl-tags{margin-top:8px}
.bl-item .bl-tag{margin-bottom:0}
.bl-empty{padding:48px 0;text-align:center;color:var(--text-muted)}
.bl-pages{display:flex;justify-content:center;align-items:center;gap:16px;margin-top:34px;font-size:14px;color:var(--text-muted)}
.bl-pages a{color:var(--accent-blue);text-decoration:none}
.bl-back{color:var(--accent-blue);text-decoration:none;font-size:15px}

/* 页脚（和主站一致） */
.bl-footer{margin-top:20px;padding:30px 24px 34px;text-align:center;border-top:1px solid var(--line-light);color:var(--text-muted);font-size:12px;line-height:1.9}
.bl-footer a{color:inherit;font-weight:500;text-decoration:none}
.bl-footer a:hover{color:var(--accent-blue)}

@media (max-width:960px){
  .bl-doc{grid-template-columns:1fr}
  .bl-toc{display:none}
  .bl-anchor{display:none}
}
@media (max-width:720px){
  .bl-main{padding:28px 16px 56px}
  .bl-article h1,.bl-list h1{font-size:28px}
  .bl-content{font-size:16px}
  .bl-content h2{font-size:22px;margin-top:36px}
  .bl-pager{flex-direction:column}
  .bl-pg{width:100%}
}

/* 文章/博客页：背景和「关于本站」「常见问题」完全一致——纯白(深色模式用统一的深底)，不带渐变和网格 */
html body[data-page="blog"]{background:#fff!important;background-image:none!important}
html.theme-dark body[data-page="blog"]{background:var(--bg-deep,#101925)!important;background-image:none!important}
html:has(body[data-page="blog"]){background:#fff}
html.theme-dark:has(body[data-page="blog"]){background:var(--bg-deep,#101925)}
html body[data-page="blog"]::before,html body[data-page="blog"]::after{display:none!important;content:none!important;background:none!important}
/* 夜间模式：实心蓝色按钮用沉稳深蓝，不刺眼 */
html.theme-dark .bl-cta-b{background:#435fae;color:#eef2ff}