/* ============================================================================
   random-walk.atoma.one 文章页公共样式 —— 唯一事实源 (single source of truth)

   这是所有文章页公共样式的唯一定义处。Worker 会:
     1. 在 /article.css 路由原样提供本文件;
     2. 用本文件内容算 hash 当版本号,注入 <link ...article.css?v=hash> 到 <head> 最前。
   因为注入在 <head> 最前,文章自己后面的 <style> 能覆盖这里的公共值(如个别文章
   调正文行高)。文章 HTML / post-template 不要再内联这些规则。

   改样式的唯一动作:编辑本文件 → 在 ~/workspace/random-walk-worker 跑 npm run deploy。
   内容一变 hash 自动变、URL 自动失效,无需上传 R2 / purge / 手改版本号。

   设计基准:「随机游走 v2」设计稿,配色/字号/间距勿改。
   ============================================================================ */

/* --- 基础 --- */
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:#fbfaf7}
body{font-family:'IBM Plex Sans','Noto Sans SC',sans-serif;color:#1a1a17}
::selection{background:#2A3E68;color:#fff}

/* --- 页面骨架 --- */
.wrap{padding:48px 0 72px}
.crumb{font-family:'IBM Plex Mono',monospace;font-size:12px;color:#a3a39d;margin-bottom:24px}
.crumb a{color:#a3a39d;text-decoration:none}

/* --- 文章卡片 / 标题 / 元信息 --- */
article{border:1px solid #1614131f;background:#fdfcf9;border-radius:3px;padding:54px 64px;overflow:hidden}
.cat{text-align:center;font-family:'IBM Plex Mono',monospace;font-size:12px;color:#2A3E68;margin-bottom:16px}
h1{text-align:center;font-family:'IBM Plex Serif','Noto Serif SC',serif;font-weight:700;font-size:38px;line-height:1.38;color:#1a1a17;margin:0 0 22px}
/* Worker 会把 “· 约 N 分钟 · M 次阅读” 拼接进 .meta */
.meta{display:flex;justify-content:center;align-items:center;gap:18px;font-family:'IBM Plex Mono',monospace;font-size:12px;color:#a3a39d;margin-bottom:4px}
.meta .date{display:inline-flex;align-items:center;gap:7px}

/* --- 封面 / 图注 --- */
.cover{margin:28px -64px 12px;background:#edece7;aspect-ratio:16/9;overflow:hidden}
.cover img{width:100%;height:100%;object-fit:cover;display:block}
.caption{text-align:center;font-family:'IBM Plex Serif','Noto Serif SC',serif;font-style:italic;font-size:13.5px;line-height:1.7;color:#8a8a85;margin:10px 0 24px}

/* --- 正文排版 --- */
.body{font-family:'IBM Plex Serif','Noto Serif SC',serif;font-size:14.5px;line-height:1.7;color:#2c2c28}
.body p{margin:0 0 17px}
.body a{color:#2A3E68}
.body h2{font-family:'IBM Plex Sans','Noto Sans SC',sans-serif;font-weight:700;font-size:22px;line-height:1.4;color:#1a1a17;margin:30px 0 13px}
.body h3{font-family:'IBM Plex Sans','Noto Sans SC',sans-serif;font-weight:600;font-size:17px;line-height:1.4;color:#1a1a17;margin:26px 0 11px}
.body code{font-family:'IBM Plex Mono',monospace;font-size:12.5px;background:#f1efe9;color:#3a3a34;padding:1px 6px;border-radius:3px;overflow-wrap:anywhere}

/* --- 代码块:左行号列 + 右代码列 --- */
.code{display:flex;font-family:'IBM Plex Mono',monospace;font-size:13px;line-height:1.9;background:#f7f6f1;border:1px solid #1614131a;border-radius:4px;margin:0 0 30px;overflow:hidden}
.code .ln{flex:none;text-align:right;color:#c2bfb4;background:#efeee7;border-right:1px solid #16141312;padding:16px 12px;user-select:none}
.code .src{padding:16px 18px;overflow-x:auto;color:#33332e;white-space:pre}
.code .src .kw{color:#2A3E68}
.code .src .cm{color:#a3a39d}

/* --- 表格:细线、数字列右对齐等宽、强调列(.hl)藏青 --- */
.body table{width:100%;border-collapse:collapse;margin:6px 0 9px}
.body th{font-family:'IBM Plex Sans','Noto Sans SC',sans-serif;font-weight:600;font-size:12.5px;color:#6b6b64;padding:0 0 9px;border-bottom:1.5px solid #16141538;text-align:left}
.body td{font-family:'IBM Plex Serif','Noto Serif SC',serif;font-size:14.5px;color:#2c2c28;padding:10px 0;border-bottom:1px solid #16141514}
.body th.num,.body td.num{text-align:right;font-family:'IBM Plex Mono',monospace}
.body th.num{font-size:12px;font-weight:500}
.body td.num{font-size:13px;color:#55554f}
.body .hl{color:#2A3E68}

/* --- 引用:居中 + 顶部引号装饰 + 可选署名 --- */
.body blockquote{position:relative;text-align:center;font-family:'IBM Plex Serif','Noto Serif SC',serif;font-style:italic;font-weight:500;font-size:20px;line-height:1.7;color:#1a1a17;max-width:540px;margin:36px auto;padding:34px 8px 8px;border-top:1px solid #16141522}
.body blockquote::before{content:'\201C';position:absolute;top:-30px;left:50%;transform:translateX(-50%);background:#fdfcf9;padding:0 16px;font-style:normal;font-size:52px;line-height:1;color:#2A3E68}
.body blockquote cite{display:block;margin-top:18px;font-style:normal;font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:0.12em;color:#a3a39d}

/* --- 有序列表:蓝色编号 --- */
.body ol{list-style:none;counter-reset:item;padding:0;margin:6px 0 22px;font-size:14.5px;line-height:1.7;color:#2c2c28}
.body ol li{position:relative;padding-left:24px;margin-bottom:5px;counter-increment:item}
.body ol li::before{content:counter(item) '.';position:absolute;left:0;top:0;color:#2A3E68}

/* --- 无序列表:蓝色小圆点 --- */
.body ul{list-style:none;padding:0;margin:0 0 22px;font-size:14.5px;line-height:1.7;color:#2c2c28}
.body ul li{position:relative;padding-left:19px;margin-bottom:7px}
.body ul li::before{content:'';position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:#2A3E68}

/* --- 图片排版 --- */
/* 出血横图:出血到卡片边缘(卡片 padding 64px → 负 margin) */
.bleed{margin:6px -64px 8px;background:#edece7;overflow:hidden}
.bleed img{width:100%;display:block}
/* 全宽横图(不出血) */
.full{margin:6px 0 8px}
.full img{width:100%;border-radius:2px;display:block}
/* 竖图居中限宽 */
.portrait{margin:22px auto;max-width:560px}
.portrait img{width:100%;border-radius:2px;display:block}
/* 两张竖图并排(移动端堆叠) */
.duo{display:flex;gap:12px;margin:22px 0}
.duo figure{flex:1;margin:0}
.duo img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:2px;display:block}

/* --- 花饰分隔符 ❦ --- */
.body hr{border:none;text-align:center;margin:8px 0 26px}
.body hr::after{content:'\2766';color:#c2c2ba;font-size:20px;font-family:'IBM Plex Serif','Noto Serif SC',serif}

/* --- 文末分类 / 标签 --- */
.endmeta{margin-top:44px;padding-top:28px;border-top:1px solid #1614130f;display:flex;flex-direction:column;gap:22px}
.endmeta .label{font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:0.1em;color:#a3a39d;margin-bottom:12px}
.endmeta .cat-link{font-family:'IBM Plex Mono',monospace;font-size:12px;color:#2A3E68;text-decoration:none}
.endmeta .tags{display:flex;gap:10px;flex-wrap:wrap}
.endmeta .tag{font-family:'IBM Plex Mono',monospace;font-size:11px;color:#6b6b64;border:1px solid #1614131a;padding:4px 10px;border-radius:2px}

/* --- Worker 注入元素:阅读时间 + 阅读进度条 --- */
/* Worker 把 <span class="injected-reading">约 N 分钟 · M 次阅读</span> 拼进 .meta */
.injected-reading{display:inline;color:#a3a39d;font-size:13px;font-family:'IBM Plex Mono',monospace}
.injected-reading::before{content:" · "}
/* 顶部阅读进度条,Worker 注入 <div id="rp"> + 滚动脚本 */
#rp{position:fixed;top:0;left:0;width:0;height:2px;background:#2A3E68;z-index:9999;transition:width .1s}

/* --- 移动端 --- */
@media(max-width:640px){
  /* Worker 注入的顶部导航栏 */
  header > div{height:52px!important;padding:0 16px!important}
  header > div > a > span:first-child{font-size:18px!important}
  header > div > a > span + span{display:none!important}
  header nav{gap:14px!important;font-size:12px!important}
  main{padding:0 14px!important}
  /* 文章排版 */
  article{padding:30px 20px}
  h1{font-size:27px;line-height:1.3}
  .body h2{font-size:23px}
  .wrap{padding:24px 0 48px}
  .cover,.bleed{margin-left:-20px;margin-right:-20px}
  .duo{flex-direction:column}
}
