/* ===== 基础 ===== */
:root{
  --ink:#1f2933; --ink-soft:#52606d; --faint:#8a97a5;
  --line:#e4e9ef; --bg:#f6f8fa; --card:#ffffff;
  --brand:#2f6f4f; --brand-dark:#245a40; --accent:#c0392b;
  --code-bg:#0f2437; --code-ink:#dce6ee; --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.container{max-width:880px;margin:0 auto;padding:0 20px}

/* ===== 顶部导航 ===== */
header.site{background:var(--card);border-bottom:1px solid var(--line)}
.nav{max-width:880px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.brand{display:flex;flex-direction:column;gap:5px;line-height:1.25;font-weight:800;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .logo{color:var(--brand)}
.brand-name{font-size:1.18rem;white-space:nowrap}
.brand-slogan{font-size:.66rem;font-weight:400;color:#5ea885;white-space:nowrap}
.nav-links{display:flex;gap:18px;flex-wrap:wrap;margin-left:auto}
.nav-links a{color:var(--ink-soft);font-weight:500;font-size:.95rem;padding:4px 2px;border-bottom:2px solid transparent}
.nav-links a:hover{color:var(--brand);text-decoration:none;border-bottom-color:var(--brand)}
.tagline{width:100%;color:var(--faint);font-size:.82rem;margin-top:-8px}

/* ===== 卡片/列表 ===== */
main{padding:32px 0 60px}
.page-title{font-size:1.6rem;font-weight:800;margin:0 0 4px}
.page-sub{color:var(--faint);margin:0 0 26px}
/* 首页 hero: slogan + 搜索框 */
.hero{padding:10px 0 20px;margin-bottom:8px;text-align:center}
.hero .page-sub{font-size:1.02rem;margin-bottom:14px}
.search-box{display:flex;gap:8px;max-width:520px;margin:0 auto}
.search-box input[type=search]{flex:1;padding:11px 16px;border:1px solid var(--line);border-radius:24px;
  font-size:.95rem;font-family:inherit;background:var(--card);box-sizing:border-box}
.search-box input[type=search]:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,111,79,.12)}
.search-box button{background:#fff;color:var(--ink-soft);border:1px solid var(--line);border-radius:24px;padding:0 21px;
  font-size:.92rem;font-weight:700;cursor:pointer;white-space:nowrap;transition:border-color .15s,color .15s}
.search-box button:hover,.search-box button:active{border-color:var(--brand);color:var(--brand)}
.section-h{display:flex;align-items:baseline;gap:10px;margin:34px 0 14px;font-size:1.2rem;font-weight:700}
.section-h .cat-ico{font-size:1.1rem}
.section-h a.more{margin-left:auto;font-size:.85rem;font-weight:500;color:var(--faint)}

.article-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px}
.post-card{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px 20px;transition:.15s}
.post-card:hover{border-color:var(--brand);box-shadow:0 2px 12px rgba(47,111,79,.08)}
.post-card a.title{font-size:1.12rem;font-weight:700;color:var(--ink);line-height:1.4}
.post-card a.title:hover{color:var(--brand);text-decoration:none}
.post-meta{color:var(--faint);font-size:.82rem;margin:6px 0 8px;display:flex;gap:14px;flex-wrap:wrap}
.post-meta .chip{background:var(--bg);border-radius:20px;padding:1px 10px}
.post-summary{color:var(--ink-soft);font-size:.93rem;margin:0}
.book-banner{display:block;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:18px 20px;margin-bottom:14px;text-decoration:none;transition:.15s}
a.book-banner:hover{border-color:var(--brand);box-shadow:0 2px 12px rgba(47,111,79,.08);text-decoration:none}
.book-banner h2{margin:0 0 6px;font-size:1.12rem;font-weight:700;line-height:1.4;color:var(--ink)}
a.book-banner:hover h2{color:var(--brand)}
.book-banner p{margin:0;font-size:.93rem;color:var(--ink-soft)}
.book-banner .bb-go{display:inline-block;margin-top:8px;font-weight:700;font-size:.88rem;color:var(--brand)}
.chapter-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.chapter-list li{background:var(--card);border:1px solid var(--line);border-radius:8px}
.chapter-list a{display:flex;gap:12px;padding:12px 16px;color:var(--ink);align-items:center}
.chapter-list a:hover{background:#f0f7f3;text-decoration:none}
.chapter-list .num{color:var(--brand);font-weight:700;min-width:54px}
.chapter-list .done{margin-left:auto;color:var(--brand);font-size:.8rem}

/* ===== 文章正文(书式) ===== */
.article-head{margin-bottom:8px}
.article-head .crumb{font-size:.85rem;color:var(--faint);margin-bottom:10px}
.title-row{display:flex;align-items:flex-start;gap:8px;margin-bottom:12px}
.title-row h1{font-size:1.7rem;line-height:1.4;margin:0;flex:1 1 auto;min-width:0}
.title-row .cmnt-dock{flex:0 0 48px;width:48px;position:static;opacity:1;padding-top:5px}
.title-area{display:none;border-left:3px solid var(--line);padding:6px 0 6px 14px;margin:0 0 14px}
.title-area.open{display:block}
.article-meta{color:var(--faint);font-size:.85rem;display:flex;gap:16px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:8px}
.book-nav{display:flex;justify-content:space-between;gap:12px;background:var(--card);border:1px solid var(--line);border-radius:8px;padding:10px 16px;margin:18px 0;font-size:.9rem;flex-wrap:wrap}
.book-nav a{color:var(--brand);font-weight:600}

.book-content{margin-top:10px}
/* 正文块: 评论气泡绝对定位在右侧, 与该块第一行对齐(不受内容高度/换行影响) */
.block{position:relative;padding:0;margin:0 0 4px}
.block-body{padding-right:56px}
.block-body>:first-child{margin-top:0}
.block.btype-h2{margin-top:1.5em}
.block.btype-h3{margin-top:1.2em}
.block.btype-code,.block.btype-quote{margin-top:.7em}
.block.btype-hr{margin:1.6em 0}
.block h2{font-size:1.35rem;margin:0 0 .6em;font-weight:800}
.block hr{border:none;border-top:1px dashed var(--line);margin:0}
.block h3{font-size:1.12rem;margin:0 0 .5em;font-weight:700;color:var(--brand-dark)}
.block p{margin:0 0 .7em}
.block blockquote{margin:0 0 .8em;padding:8px 16px;border-left:4px solid var(--brand);background:#f0f7f3;color:var(--ink-soft);border-radius:0 8px 8px 0}
.block ul,.block ol{margin:0 0 .6em;padding-left:1.6em}
.block li{margin:.3em 0}
.block pre{background:var(--code-bg);color:var(--code-ink);border-radius:10px;padding:16px 18px;overflow-x:auto;font-family:var(--mono);font-size:.88rem;line-height:1.6;margin:0 0 .9em}
.block code{font-family:var(--mono);font-size:.9em}
.block p code,.block li code,.block h2 code,.block h3 code{background:#eef2f5;color:var(--accent);padding:1px 6px;border-radius:5px;font-size:.88em}
.block figure.blk-img{margin:0 0 1em;text-align:center}
.block figure.blk-img img{max-width:100%;border-radius:10px;border:1px solid var(--line);box-shadow:0 2px 10px rgba(0,0,0,.06)}
.block figure.blk-img figcaption{color:var(--faint);font-size:.85rem;margin-top:6px}
.block a{word-break:break-all}

/* 逐行评论: 每段右上角的评论按钮(绝对对齐第一行) */
.cmnt-dock{position:absolute;top:0;right:0;width:48px;display:flex;justify-content:flex-start;opacity:1}
.block.btype-h2 .cmnt-dock{top:2px}
.block.btype-h3 .cmnt-dock{top:1px}
.block.btype-code .cmnt-dock{top:12px}
.block.btype-quote .cmnt-dock{top:6px}
.cmnt-btn{display:inline-flex;align-items:center;gap:4px;background:none;border:1px solid transparent;border-radius:20px;
  padding:2px 10px;font-size:.78rem;color:var(--faint);cursor:pointer;line-height:1.5;background:var(--card)}
.cmnt-btn:hover{border-color:var(--brand);color:var(--brand)}
.cmnt-btn.active{border-color:var(--brand);color:var(--brand)}
.cmnt-btn.has{color:var(--brand);font-weight:700}
.cmnt-area{margin:8px 0 14px;border-left:3px solid var(--line);padding:6px 0 6px 14px;display:none}
.cmnt-area.open{display:block}
.cmnt-list{display:flex;flex-direction:column;gap:10px;margin-bottom:10px}
/* 超过5条评论: 固定高度区域内滚动 */
.cmnt-list.scrollable{overflow-y:auto;padding-right:8px;margin-right:-8px;border-bottom:1px dashed var(--line);padding-bottom:8px}
.cmnt-list.scrollable::-webkit-scrollbar{width:6px}
.cmnt-list.scrollable::-webkit-scrollbar-thumb{background:#c4d0c9;border-radius:3px}
.cmnt-list.scrollable::-webkit-scrollbar-track{background:transparent}
.cmnt{background:#fbfcfe;border:1px solid var(--line);border-radius:8px;padding:9px 12px}
.cmnt .who{font-weight:700;font-size:.86rem;color:var(--brand-dark)}
.cmnt .when{color:var(--faint);font-size:.76rem;margin-left:8px;font-weight:400}
.cmnt .txt{margin:3px 0 0;font-size:.92rem;white-space:pre-wrap;word-break:break-word}
.cmnt .reply{margin-top:4px}
.cmnt .reply a{font-size:.78rem;color:var(--faint)}
.cmnt .reply a.cmnt-del{margin-left:12px;color:var(--accent)}
.cmnt .reply a.cmnt-del:hover{text-decoration:underline}
.cmnt .replies{margin-top:8px;padding-left:12px;border-left:2px solid var(--line);display:flex;flex-direction:column;gap:8px}
.cmnt-form{display:flex;flex-direction:column;gap:8px}
.cmnt-form .row{display:flex;gap:8px;flex-wrap:wrap}
.cmnt-form input[type=text],.cmnt-form input[type=email]{flex:1;min-width:140px;padding:7px 11px;border:1px solid var(--line);border-radius:7px;font-size:.86rem;font-family:inherit}
.cmnt-form textarea{width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:8px;font-size:.9rem;font-family:inherit;resize:vertical;min-height:64px}
.cmnt-form input:focus,.cmnt-form textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(47,111,79,.12)}
.cmnt-form button{align-self:flex-start;background:var(--brand);color:#fff;border:none;border-radius:7px;padding:7px 18px;font-size:.88rem;cursor:pointer;font-weight:600}
.cmnt-form button:hover{background:var(--brand-dark)}
.cmnt-form .tip{font-size:.76rem;color:var(--faint)}
.cmnt-form button:disabled{opacity:.6;cursor:wait}

/* ===== 页脚 ===== */
footer.site{border-top:1px solid var(--line);background:var(--card);color:var(--faint);font-size:.85rem;padding:24px 0;margin-top:20px}
footer.site .container{display:flex;gap:10px;flex-wrap:wrap;justify-content:space-between}

@media(max-width:600px){
  .block-body{padding-right:44px}
  .cmnt-dock{width:40px}
  .block.btype-code .cmnt-dock{top:10px}
}