/* 手册库专用样式（配合主站 style.css 的深色+金色+衬线风） */
/* 覆盖：列表页卡片封面、详情页「左目录右正文」布局、正文排版 */

/* ============ 列表页 ============ */
.manuals-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:28px;margin-top:8px;
}
.manual-card{
  display:flex;flex-direction:column;overflow:hidden;
  border:1px solid var(--line);border-radius:16px;background:var(--bg-2);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  cursor:pointer;text-decoration:none;color:var(--text);
}
.manual-card:hover{
  transform:translateY(-6px);border-color:var(--accent-2);
  box-shadow:0 20px 48px rgba(0,0,0,.45);text-decoration:none;
}
/* CSS 文字封面：主题色渐变 + 书名衬线大字 */
.manual-cover{
  position:relative;aspect-ratio:4/3;overflow:hidden;
  display:flex;flex-direction:column;justify-content:center;padding:26px;
  background:var(--cover-1,#2e2a22);
  border-bottom:1px solid var(--line-2);
}
.manual-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(0,0,0,0) 55%,rgba(0,0,0,.35));
  pointer-events:none;
}
.manual-cover .cover-kicker{
  position:relative;font-size:11px;letter-spacing:.22em;text-transform:uppercase;
  color:rgba(242,234,220,.6);margin-bottom:auto;font-weight:600;
}
.manual-cover .cover-title{
  position:relative;font-family:'Noto Serif SC','Songti SC',serif;
  font-weight:800;font-size:24px;line-height:1.32;color:#f7f0e2;
  text-shadow:0 2px 16px rgba(0,0,0,.35);
}
.manual-cover .cover-sub{
  position:relative;font-size:12.5px;color:rgba(242,234,220,.72);
  margin-top:10px;line-height:1.6;display:-webkit-box;
  -webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.manual-card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:12px;flex:1}
.manual-card-body h3{font-family:'Noto Serif SC','Songti SC',serif;font-size:19px;font-weight:700}
.manual-card-body .card-desc{font-size:14px;color:var(--text-2);line-height:1.7}
.manual-card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  gap:10px;flex-wrap:wrap;
}
.manual-tags{display:flex;gap:6px;flex-wrap:wrap}
.manual-tags span{
  font-size:12px;color:var(--accent);background:var(--accent-light);
  border:1px solid var(--line);border-radius:999px;padding:3px 10px;
}
.manual-count{font-size:12px;color:var(--text-3);white-space:nowrap}

/* ============ 详情页 ============ */
.manual-page{min-height:100vh}
.manual-top{
  border-bottom:1px solid var(--line-2);background:var(--bg-2);
  padding:34px 0 30px;margin-top:60px;
}
.manual-top .back-link{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;
  color:var(--text-3);margin-bottom:18px;
}
.manual-top .back-link:hover{color:var(--accent)}
.manual-top h1{font-family:'Noto Serif SC','Songti SC',serif;font-size:34px;font-weight:800;line-height:1.3}
.manual-top .manual-sub{color:var(--text-2);font-size:15px;margin-top:10px;max-width:640px}
.manual-top .manual-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}

.manual-layout{display:flex;gap:0;align-items:flex-start}
.manual-sidebar{
  width:224px;flex-shrink:0;position:sticky;top:60px;
  max-height:calc(100vh - 60px);overflow-y:auto;
  border-right:1px solid var(--line-2);padding:28px 16px 40px 0;
}
.manual-sidebar .side-label{
  font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--text-4);margin-bottom:14px;font-weight:600;
}
.manual-group{margin-bottom:6px}
.manual-group-title{
  display:flex;align-items:center;justify-content:space-between;width:100%;
  background:none;border:none;cursor:pointer;text-align:left;
  font-family:'Noto Serif SC','Songti SC',serif;font-size:15px;font-weight:700;
  color:var(--text);padding:10px 8px 10px 0;border-radius:8px;
}
.manual-group-title:hover{background:var(--bg-3)}
.manual-group-title .arrow{font-size:11px;color:var(--text-3);transition:transform .2s ease}
.manual-group.collapsed .arrow{transform:rotate(-90deg)}
.manual-group-items{list-style:none;max-height:2000px;overflow:hidden;transition:max-height .3s ease}
.manual-group.collapsed .manual-group-items{max-height:0}
.manual-chapter{
  display:block;font-size:13.5px;color:var(--text-2);line-height:1.5;
  padding:7px 10px 7px 16px;border-left:2px solid var(--line-2);
  margin-left:10px;border-radius:0 6px 6px 0;text-decoration:none;
}
.manual-chapter:hover{color:var(--text);background:var(--bg-3);text-decoration:none}
.manual-chapter.active{
  color:var(--accent);border-left-color:var(--accent);background:var(--accent-light);
  font-weight:600;
}

.manual-content{flex:1;min-width:0;padding:40px 36px 64px}
.manual-content .chapter-head{
  border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:28px;
}
.manual-content .chapter-head .crumb{font-size:12px;color:var(--accent);letter-spacing:.12em;margin-bottom:10px}
.manual-content .chapter-head h2{font-family:'Noto Serif SC','Songti SC',serif;font-size:28px;font-weight:800;line-height:1.4}

/* 正文排版（pandoc 生成的语义 HTML） */
.manual-body{font-size:16px;line-height:1.85;color:var(--text);word-wrap:break-word}
.manual-body h2{
  font-family:'Noto Serif SC','Songti SC',serif;font-size:24px;font-weight:800;
  margin:44px 0 18px;padding-bottom:10px;border-bottom:1px solid var(--line-2);
}
.manual-body h3{font-family:'Noto Serif SC','Songti SC',serif;font-size:19px;font-weight:700;margin:34px 0 14px}
.manual-body h4{font-size:16px;font-weight:700;margin:26px 0 10px}
.manual-body p{margin:14px 0}
.manual-body strong{color:var(--accent);font-weight:600}
.manual-body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}
.manual-body ul,.manual-body ol{margin:14px 0;padding-left:24px}
.manual-body li{margin:7px 0}
.manual-body blockquote{
  margin:18px 0;padding:14px 18px;border-left:3px solid var(--accent);
  background:var(--accent-light);border-radius:0 10px 10px 0;color:var(--text-2);
}
.manual-body code{
  font-family:'SF Mono',ui-monospace,Consolas,monospace;font-size:.9em;
  background:var(--bg-3);border:1px solid var(--line-2);border-radius:6px;padding:2px 6px;color:var(--accent);
}
.manual-body pre{
  margin:20px 0;padding:18px;background:var(--bg-3);border:1px solid var(--line);
  border-radius:12px;overflow-x:auto;font-size:13.5px;line-height:1.6;
}
.manual-body pre code{background:none;border:none;padding:0;color:var(--text-2);font-size:inherit}
.manual-body pre.mermaid{background:transparent;border:none;padding:8px 0;overflow:visible}
.manual-body img{max-width:100%;height:auto;border-radius:12px;margin:10px 0;border:1px solid var(--line)}
.manual-body table{
  width:100%;border-collapse:collapse;margin:20px 0;font-size:14px;
}
.manual-body th,.manual-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.manual-body th{background:var(--bg-3);font-weight:600;color:var(--accent)}
.manual-body tr:nth-child(even) td{background:var(--bg-3)}
.manual-body hr{border:none;border-top:1px solid var(--line);margin:32px 0}

/* 代码块：右上角复制按钮 */
.code-block{position:relative;margin:20px 0}
.code-block-head{
  display:flex;align-items:center;justify-content:space-between;
  padding:7px 14px;background:var(--bg-2);border:1px solid var(--line);
  border-bottom:none;border-radius:12px 12px 0 0;
}
.code-block-lang{
  font-size:11.5px;color:var(--text-3);letter-spacing:.08em;
  text-transform:uppercase;font-family:'SF Mono',ui-monospace,Consolas,monospace;
}
.code-copy-btn{
  background:none;border:1px solid var(--line-2);color:var(--text-2);
  font-size:12px;padding:3px 12px;border-radius:6px;cursor:pointer;
  transition:color .15s ease,border-color .15s ease;
}
.code-copy-btn:hover{color:var(--accent);border-color:var(--accent)}
.code-block pre{margin:0;border-radius:0 0 12px 12px;border-top:none}

/* 上下章翻页 */
.manual-pager{display:flex;gap:14px;justify-content:space-between;margin-top:56px;padding-top:24px;border-top:1px solid var(--line)}
.manual-pager a{
  flex:1;display:flex;flex-direction:column;gap:6px;padding:16px 18px;
  border:1px solid var(--line);border-radius:12px;background:var(--bg-2);
  color:var(--text);text-decoration:none;transition:border-color .2s ease;
}
.manual-pager a:hover{border-color:var(--accent-2);text-decoration:none}
.manual-pager .pg-label{font-size:12px;color:var(--text-3)}
.manual-pager .pg-title{font-size:14px;font-weight:600;color:var(--text)}
.manual-pager .pg-next{text-align:right}
.manual-pager .pg-spacer{flex:1}

/* 移动端：目录变抽屉 */
.manual-menu-btn{
  display:none;position:fixed;left:14px;bottom:20px;z-index:60;
  width:48px;height:48px;border-radius:50%;border:1px solid var(--line);
  background:var(--bg-2);color:var(--text);font-size:20px;cursor:pointer;
  box-shadow:0 8px 24px rgba(0,0,0,.4);
}
.manual-backdrop{
  display:none;position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:55;
}
@media (max-width:900px){
  .manual-sidebar{
    position:fixed;left:0;top:60px;bottom:0;z-index:70;width:280px;
    background:var(--bg-2);transform:translateX(-100%);transition:transform .28s ease;
    border-right:1px solid var(--line);max-height:none;padding:28px 20px 40px;
  }
  .manual-sidebar.open{transform:translateX(0)}
  .manual-menu-btn{display:block}
  .manual-backdrop.show{display:block}
  .manual-content{padding:28px 22px 80px}
  .manual-top h1{font-size:27px}
}