:root{
  --bg:#0f1115; --bg2:#161a22; --card:#1c212b; --card2:#232936;
  --fg:#e8ecf2; --fg2:#9aa4b2; --fg3:#5f6a7a;
  --accent:#e8524a; --accent2:#ff6b62;
  --line:#2a3140; --ok:#3fb950;
  --sab:env(safe-area-inset-bottom,0px);
  --sat:env(safe-area-inset-top,0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;height:100%}
body{
  background:var(--bg);color:var(--fg);
  font:15px/1.6 -apple-system,BlinkMacSystemFont,"PingFang SC","Noto Sans CJK SC","Microsoft YaHei",sans-serif;
  overflow:hidden;
}
svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ---------- 顶栏 ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;height:calc(52px + var(--sat));
  padding:var(--sat) 6px 0;display:flex;align-items:center;gap:4px;
  background:rgba(15,17,21,.92);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);z-index:40;
}
.topbar h1{flex:1;margin:0;font-size:16px;font-weight:600;text-align:center;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:0 4px}
.icon-btn{
  width:38px;height:38px;border:0;background:transparent;color:var(--fg);
  display:grid;place-items:center;border-radius:10px;cursor:pointer;
}
.icon-btn:active{background:var(--card2)}
.icon-btn[hidden]{visibility:hidden;display:grid}

/* ---------- 视图 ---------- */
.view{display:none;height:100%;overflow-y:auto;-webkit-overflow-scrolling:touch}
.view.active{display:block}
#viewLibrary{padding:calc(60px + var(--sat)) 14px calc(28px + var(--sab))}

/* ---------- 上传卡 ---------- */
.upload-card{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  padding:26px 16px;border:1.5px dashed var(--line);border-radius:16px;
  background:linear-gradient(160deg,var(--card),var(--bg2));
  cursor:pointer;transition:.18s;margin-bottom:18px;
}
.upload-card:active{transform:scale(.985);border-color:var(--accent)}
.up-ico{width:30px;height:30px;color:var(--accent);stroke-width:1.7}
.up-title{font-size:15px;font-weight:600}
.up-sub{font-size:12px;color:var(--fg3)}

/* ---------- 解析状态 ---------- */
.parse-status{
  padding:12px 14px;border-radius:12px;background:var(--card);
  font-size:13px;color:var(--fg2);margin-bottom:14px;border-left:3px solid var(--accent);
}
.parse-status b{color:var(--fg)}

/* ---------- 书列表 ---------- */
.book-list{display:flex;flex-direction:column;gap:10px}
.book-item{
  display:flex;gap:12px;align-items:center;padding:12px;border-radius:14px;
  background:var(--card);cursor:pointer;transition:.15s;position:relative;
}
.book-item:active{background:var(--card2)}
.book-thumb{
  width:46px;height:60px;border-radius:7px;flex:none;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--accent),#8a2b26);color:#fff;
  font-size:17px;font-weight:700;overflow:hidden;
}
.book-thumb svg{width:22px;height:22px;stroke-width:1.6;opacity:.9}
.book-info{flex:1;min-width:0}
.book-name{font-size:15px;font-weight:600;margin-bottom:3px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.book-meta{font-size:12px;color:var(--fg3);display:flex;gap:8px;flex-wrap:wrap}
.book-prog{font-size:12px;color:var(--accent);margin-top:3px}
.book-del{
  width:34px;height:34px;border:0;background:transparent;color:var(--fg3);
  border-radius:9px;display:grid;place-items:center;cursor:pointer;flex:none;
}
.book-del:active{background:#3a1f1f;color:#ff7b72}
.book-del svg{width:18px;height:18px}
.empty-hint{text-align:center;color:var(--fg3);font-size:13px;padding:40px 0}

/* ---------- 抽屉 ---------- */
.drawer{
  position:fixed;top:0;bottom:0;left:0;width:min(84vw,360px);
  background:var(--bg2);border-right:1px solid var(--line);z-index:60;
  transform:translateX(-102%);transition:transform .26s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;padding-top:var(--sat);
}
.drawer.open{transform:none}
.drawer-head{
  display:flex;align-items:center;gap:8px;padding:12px 8px 12px 16px;
  border-bottom:1px solid var(--line);font-size:15px;font-weight:600;
}
.drawer-head span{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chapter-list{flex:1;overflow-y:auto;padding:8px 0 calc(20px + var(--sab))}
.chapter-item{
  padding:13px 16px;font-size:14px;color:var(--fg2);cursor:pointer;
  display:flex;gap:10px;align-items:baseline;border-left:3px solid transparent;
}
.chapter-item:active{background:var(--card)}
.chapter-item.cur{color:var(--fg);background:var(--card);border-left-color:var(--accent);font-weight:600}
.chapter-item .idx{font-size:11px;color:var(--fg3);min-width:22px;flex:none}
.chapter-item .tt{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.scrim{position:fixed;inset:0;background:rgba(0,0,0,.55);z-index:55}

/* ---------- 播放页 ---------- */
.player{
  padding:calc(62px + var(--sat)) 18px calc(18px + var(--sab));
  display:flex;flex-direction:column;
}
.now-playing{display:flex;gap:14px;align-items:center;margin-bottom:16px}
.book-cover{
  width:62px;height:80px;border-radius:10px;flex:none;display:grid;place-items:center;
  background:linear-gradient(150deg,#2c3444,#1a1f29);color:var(--fg2);
  box-shadow:0 6px 18px rgba(0,0,0,.35);
}
.book-cover svg{width:26px;height:26px;stroke-width:1.5}
.np-meta{flex:1;min-width:0}
.np-book{font-size:14px;color:var(--fg2);margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.np-chapter{font-size:17px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

.text-pane{
  flex:1;min-height:120px;max-height:34vh;overflow-y:auto;
  font-size:16px;line-height:2;color:var(--fg2);padding:14px 16px;
  background:var(--card);border-radius:14px;margin-bottom:16px;white-space:pre-wrap;
  -webkit-overflow-scrolling:touch;
}
.text-pane .sent{transition:.2s;border-radius:4px}
.text-pane .sent.on{background:rgba(232,82,74,.16);color:var(--fg);padding:1px 2px}

/* ---------- 进度 ---------- */
.progress-wrap{margin-bottom:8px}
#progress{
  -webkit-appearance:none;appearance:none;width:100%;height:22px;background:transparent;margin:0;
}
#progress::-webkit-slider-runnable-track{height:4px;border-radius:2px;background:var(--line)}
#progress::-webkit-slider-thumb{
  -webkit-appearance:none;width:15px;height:15px;border-radius:50%;
  background:var(--accent);margin-top:-5.5px;box-shadow:0 0 0 4px rgba(232,82,74,.16);
}
#progress::-moz-range-track{height:4px;border-radius:2px;background:var(--line)}
#progress::-moz-range-thumb{width:15px;height:15px;border:0;border-radius:50%;background:var(--accent)}
.progress-info{display:flex;justify-content:space-between;font-size:11.5px;color:var(--fg3);
  font-variant-numeric:tabular-nums;padding:0 2px}

/* ---------- 控制按钮 ---------- */
.controls{display:flex;align-items:center;justify-content:center;gap:12px;margin:12px 0 18px}
.ctrl{
  width:50px;height:50px;border:0;background:transparent;color:var(--fg);
  border-radius:50%;display:grid;place-items:center;cursor:pointer;transition:.15s;
}
.ctrl:active{background:var(--card2);transform:scale(.94)}
.ctrl-sec{width:46px;height:46px;color:var(--fg2)}
.ctrl-sec svg{width:24px;height:24px;position:relative}
.ctrl-main{
  width:68px;height:68px;background:var(--accent);color:#fff;
  box-shadow:0 5px 20px rgba(232,82,74,.35);
}
.ctrl-main:active{background:var(--accent2)}
.ctrl-main svg{width:30px;height:30px;stroke-width:1.6}
.ctrl-main svg path{fill:currentColor}

/* ---------- 底部面板按钮 ---------- */
.panel-row{display:flex;gap:8px}
.panel-btn{
  flex:1;border:0;background:var(--card);color:var(--fg2);border-radius:12px;
  padding:11px 6px;display:flex;flex-direction:column;align-items:center;gap:5px;
  cursor:pointer;font-size:11px;transition:.15s;
}
.panel-btn:active{background:var(--card2);transform:scale(.97)}
.panel-btn svg{width:19px;height:19px;stroke-width:1.8}
.panel-btn b{color:var(--fg);font-weight:600;font-size:12px}

/* ---------- 底部弹层 ---------- */
.sheet{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:70;
  display:flex;align-items:flex-end;animation:fade .18s;
}
/* 关键：hidden 必须真正隐藏，否则会拦截页面点击 */
.sheet[hidden]{display:none !important}
.drawer[hidden]{display:none !important}
.scrim[hidden]{display:none !important}
.parse-status[hidden]{display:none !important}
.empty-hint[hidden]{display:none !important}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes rise{from{transform:translateY(100%)}to{transform:none}}
.sheet-body{
  width:100%;background:var(--bg2);border-radius:20px 20px 0 0;
  padding:20px 20px calc(22px + var(--sab));animation:rise .24s cubic-bezier(.4,0,.2,1);
  max-height:86vh;overflow-y:auto;
}
.sheet-title{font-size:16px;font-weight:600;margin-bottom:16px}
.sheet-note{font-size:12px;color:var(--fg3);margin-top:14px;text-align:center}

.speed-cur{text-align:center;margin-bottom:8px}
.speed-cur b{font-size:40px;font-weight:700;color:var(--accent);font-variant-numeric:tabular-nums}
#speedRange{-webkit-appearance:none;appearance:none;width:100%;height:26px;background:transparent}
#speedRange::-webkit-slider-runnable-track{height:6px;border-radius:3px;background:var(--line)}
#speedRange::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;border-radius:50%;
  background:var(--accent);margin-top:-9px;box-shadow:0 0 0 5px rgba(232,82,74,.16)}
#speedRange::-moz-range-track{height:6px;border-radius:3px;background:var(--line)}
#speedRange::-moz-range-thumb{width:24px;height:24px;border:0;border-radius:50%;background:var(--accent)}
.speed-ticks{display:flex;justify-content:space-between;font-size:11px;color:var(--fg3);padding:0 2px}
.speed-quick{display:flex;gap:8px;margin-top:16px}
.speed-quick button{
  flex:1;padding:10px 0;border:1px solid var(--line);background:var(--card);
  color:var(--fg);border-radius:10px;font-size:13px;cursor:pointer;transition:.15s;
}
.speed-quick button:active,.speed-quick button.on{background:var(--accent);border-color:var(--accent);color:#fff}

.voice-options{display:flex;flex-direction:column;gap:8px}
.voice-opt{
  padding:13px 14px;border-radius:12px;background:var(--card);cursor:pointer;
  display:flex;align-items:center;gap:12px;border:1.5px solid transparent;transition:.15s;
}
.voice-opt:active{background:var(--card2)}
.voice-opt.on{border-color:var(--accent);background:rgba(232,82,74,.1)}
.voice-opt .vo-name{font-size:15px;font-weight:600}
.voice-opt .vo-tags{font-size:11px;color:var(--fg3);margin-top:3px}
.voice-opt .vo-play{
  width:34px;height:34px;border-radius:50%;background:var(--card2);color:var(--fg2);
  display:grid;place-items:center;flex:none;border:0;cursor:pointer;
}
.voice-opt .vo-play svg{width:16px;height:16px}
.voice-opt .vo-play:active{background:var(--accent);color:#fff}
.voice-opt .vo-check{margin-left:auto;color:var(--accent);display:none}
.voice-opt.on .vo-check{display:block}

.timer-options{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}
.timer-options button{
  padding:13px 0;border:1px solid var(--line);background:var(--card);
  color:var(--fg);border-radius:11px;font-size:14px;cursor:pointer;transition:.15s;
}
.timer-options button:active,.timer-options button.on{background:var(--accent);border-color:var(--accent);color:#fff}
.switch-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  margin-top:18px;padding:13px 14px;background:var(--card);border-radius:12px;font-size:14px;
}
.switch-row input{width:44px;height:25px;-webkit-appearance:none;appearance:none;
  background:var(--line);border-radius:13px;position:relative;transition:.2s;cursor:pointer;flex:none}
.switch-row input:checked{background:var(--accent)}
.switch-row input::after{content:"";position:absolute;top:2.5px;left:2.5px;width:20px;height:20px;
  border-radius:50%;background:#fff;transition:.2s}
.switch-row input:checked::after{transform:translateX(19px)}

/* ---------- Toast ---------- */
.toast{
  position:fixed;left:50%;bottom:calc(90px + var(--sab));transform:translateX(-50%);
  background:rgba(40,46,58,.97);color:#fff;padding:10px 18px;border-radius:22px;
  font-size:13px;z-index:99;animation:fade .2s;max-width:84vw;text-align:center;
  box-shadow:0 6px 24px rgba(0,0,0,.4);
}
.toast[hidden]{display:none}

/* ---------- 后端连接异常提示 ---------- */
.api-warn{
  position:fixed;inset:0;background:rgba(0,0,0,.7);z-index:120;
  display:flex;align-items:center;justify-content:center;padding:24px;
  animation:fade .2s;
}
.api-warn[hidden]{display:none !important}
.api-warn-body{
  width:100%;max-width:360px;background:var(--bg2);border-radius:16px;
  padding:22px 20px;border:1px solid var(--line);
}
.api-warn-title{font-size:16px;font-weight:600;margin-bottom:8px;color:var(--accent2)}
.api-warn-text{font-size:13px;color:var(--fg2);margin-bottom:14px;line-height:1.7;word-break:break-all}
.api-input{
  width:100%;padding:11px 13px;border-radius:10px;border:1px solid var(--line);
  background:var(--card);color:var(--fg);font-size:13px;font-family:inherit;
  margin-bottom:14px;box-sizing:border-box;
}
.api-input:focus{outline:none;border-color:var(--accent)}
.api-warn-btns{display:flex;gap:9px}
.api-btn{
  flex:1;padding:11px 0;border-radius:10px;border:1px solid var(--line);
  background:var(--card);color:var(--fg);font-size:14px;cursor:pointer;
  font-family:inherit;transition:.15s;
}
.api-btn:active{transform:scale(.97)}
.api-btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}

/* ==================== 书库改造：分类 + 层级 ==================== */

/* 书库/目录 搜索框 */
.lib-search-wrap{
  position:relative;display:flex;align-items:center;gap:8px;
  background:var(--card);border:1px solid var(--line);border-radius:11px;
  padding:0 11px;height:42px;margin-bottom:12px;
}
.lib-search-wrap:focus-within{border-color:var(--accent)}
.ls-ico{width:17px;height:17px;color:var(--fg3);flex:none}
.lib-search,.toc-search{
  flex:1;min-width:0;background:none;border:0;outline:none;
  color:var(--fg);font-size:14px;font-family:inherit;
}
.lib-search::placeholder,.toc-search::placeholder{color:var(--fg3)}
.lib-search::-webkit-search-cancel-button,.toc-search::-webkit-search-cancel-button{display:none}
.ls-clear{
  width:22px;height:22px;flex:none;border:0;border-radius:50%;
  background:var(--card2);color:var(--fg3);display:grid;place-items:center;
  cursor:pointer;padding:0;
}
.ls-clear svg{width:13px;height:13px;stroke-width:2.4}
.ls-clear[hidden]{display:none}

/* 分类标签 */
.cat-tabs{
  display:flex;gap:7px;overflow-x:auto;margin-bottom:14px;
  padding-bottom:3px;scrollbar-width:none;
}
.cat-tabs::-webkit-scrollbar{display:none}
.cat-tab{
  flex:none;padding:7px 14px;border-radius:20px;border:1px solid var(--line);
  background:var(--card);color:var(--fg2);font-size:13px;font-family:inherit;
  cursor:pointer;transition:.15s;white-space:nowrap;
}
.cat-tab:active{transform:scale(.96)}
.cat-tab.on{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}
.cat-tab .cnt{opacity:.65;font-size:11px;margin-left:4px}

/* 分组标题 */
.list-sec-title{
  font-size:12px;color:var(--fg3);font-weight:600;letter-spacing:.06em;
  margin:16px 2px 9px;display:flex;align-items:center;gap:8px;
}
.list-sec-title::after{content:'';flex:1;height:1px;background:var(--line)}
.list-sec-title:first-child{margin-top:0}

/* 书籍卡片（封面 + 信息） */
.book-item{
  display:flex;gap:12px;align-items:stretch;padding:11px;
  background:var(--card);border:1px solid var(--line);border-radius:13px;
  cursor:pointer;transition:.15s;
}
.book-item:active{background:var(--card2);transform:scale(.992)}
.bk-spine{
  width:52px;flex:none;border-radius:7px;position:relative;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
}
.bk-spine span{
  writing-mode:vertical-rl;text-orientation:upright;
  font-size:12px;font-weight:700;letter-spacing:.12em;
  color:#fff;max-height:92%;overflow:hidden;line-height:1.15;
  text-shadow:0 1px 3px rgba(0,0,0,.35);
}
.book-info{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center;gap:3px}
.book-name{font-size:14.5px;font-weight:600;line-height:1.35;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.book-meta{font-size:11.5px;color:var(--fg3);display:flex;gap:7px;flex-wrap:wrap;align-items:center}
.book-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--fg3);opacity:.6}
.book-prog{font-size:11.5px;color:var(--accent);display:flex;align-items:center;gap:5px}
.book-desc2{font-size:11.5px;color:var(--fg3);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.book-arr{display:grid;place-items:center;color:var(--fg3);flex:none;padding-left:2px}
.book-arr svg{width:16px;height:16px;stroke-width:2.2}

/* 上传折叠区 */
.upload-fold{
  margin-top:20px;border:1px dashed var(--line);border-radius:12px;
  background:var(--card);overflow:hidden;
}
.upload-fold summary{
  padding:12px 14px;cursor:pointer;font-size:13px;color:var(--fg2);
  display:flex;align-items:center;gap:8px;list-style:none;
}
.upload-fold summary::-webkit-details-marker{display:none}
.upload-fold summary svg{width:16px;height:16px;color:var(--fg3)}
.upload-fold[open] summary{border-bottom:1px dashed var(--line);color:var(--fg)}
.upload-fold .upload-card{border:0;background:none;border-radius:0}
.upload-fold .parse-status{margin:0 14px 12px}

/* ==================== 书籍详情页（第二层） ==================== */
#viewBook{padding:calc(60px + var(--sat)) 14px calc(28px + var(--sab))}
.bk-head{display:flex;gap:15px;margin-bottom:15px}
.bk-cover{
  width:76px;height:104px;flex:none;border-radius:9px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 18px rgba(0,0,0,.34);overflow:hidden;position:relative;
}
.bk-cover span{
  writing-mode:vertical-rl;text-orientation:upright;
  font-size:15px;font-weight:700;letter-spacing:.14em;color:#fff;
  max-height:88%;overflow:hidden;text-shadow:0 2px 5px rgba(0,0,0,.4);
}
.bk-cover svg{width:30px;height:30px;stroke-width:1.5;color:rgba(255,255,255,.9)}
.bk-meta{flex:1;min-width:0;display:flex;flex-direction:column;gap:6px;justify-content:center}
.bk-title{margin:0;font-size:18px;font-weight:700;line-height:1.35;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.bk-author{font-size:13px;color:var(--fg2)}
.bk-stats{display:flex;gap:7px;flex-wrap:wrap;font-size:11.5px;color:var(--fg3);align-items:center}
.bk-stats .dot{width:3px;height:3px;border-radius:50%;background:var(--fg3);opacity:.6}
.bk-tags{display:flex;gap:6px;flex-wrap:wrap}
.bk-tag{
  font-size:11px;padding:2.5px 8px;border-radius:5px;
  background:var(--card2);color:var(--fg2);border:1px solid var(--line);
}
.bk-desc{
  font-size:12.5px;color:var(--fg2);line-height:1.72;margin-bottom:16px;
  padding:11px 13px;background:var(--card);border-radius:10px;
  border-left:2.5px solid var(--accent);
}
.bk-actions{display:flex;gap:9px;margin-bottom:18px}
.bk-btn{
  padding:12px 16px;border-radius:11px;border:1px solid var(--line);
  background:var(--card);color:var(--fg);font-size:14px;font-family:inherit;
  cursor:pointer;display:flex;align-items:center;justify-content:center;gap:7px;
  transition:.15s;
}
.bk-btn:active{transform:scale(.97)}
.bk-btn svg{width:17px;height:17px}
.bk-btn-main{flex:1;background:var(--accent);border-color:var(--accent);color:#fff;
  font-weight:600;font-size:15px}
.bk-btn-main svg{width:19px;height:19px}

/* 章节目录（详情页内） */
.toc-search-wrap{
  position:relative;display:flex;align-items:center;gap:8px;
  background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:0 11px;height:40px;margin-bottom:12px;
}
.toc-search-wrap:focus-within{border-color:var(--accent)}
.drawer-search{margin:0 14px 8px;height:38px;flex:none}

.toc-list{display:flex;flex-direction:column;gap:7px}
.toc-group{border:1px solid var(--line);border-radius:11px;overflow:hidden;background:var(--card)}
.toc-group-head{
  padding:11px 13px;font-size:13.5px;font-weight:600;cursor:pointer;
  display:flex;align-items:center;gap:9px;transition:.15s;
}
.toc-group-head:active{background:var(--card2)}
.toc-group-head .tg-t{
  flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.toc-group-head .tg-n{font-size:11px;color:var(--fg3);font-weight:400;flex:none}
.toc-group-head .tg-arr{
  width:15px;height:15px;color:var(--fg3);flex:none;
  transition:transform .2s;
}
.toc-group.open .toc-group-head .tg-arr{transform:rotate(90deg)}
.toc-group-body{display:none;border-top:1px solid var(--line)}
.toc-group.open .toc-group-body{display:block}

.toc-item{
  padding:10px 13px 10px 26px;font-size:13.5px;color:var(--fg2);
  cursor:pointer;display:flex;align-items:center;gap:9px;
  border-bottom:1px solid rgba(42,49,64,.5);position:relative;
}
.toc-item:last-child{border-bottom:0}
.toc-item:active{background:var(--card2)}
.toc-item.on{color:var(--accent);font-weight:600;background:rgba(232,82,74,.07)}
.toc-item .ti-t{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toc-item .ti-m{font-size:11px;color:var(--fg3);flex:none;font-weight:400}
.toc-item .ti-ck{width:14px;height:14px;color:var(--ok);flex:none}
.toc-item .ti-ck[hidden]{display:none}
.toc-item .ti-tip{
  position:absolute;left:13px;top:50%;transform:translateY(-50%);
  width:4px;height:4px;border-radius:50%;background:var(--fg3);opacity:.5;
}
.toc-item.on .ti-tip{background:var(--accent);opacity:1}

/* 平铺模式的章节项（无分组） */
.toc-flat .toc-item{border-radius:9px;border:1px solid var(--line);
  background:var(--card);margin-bottom:7px;padding-left:13px}
.toc-flat .toc-item .ti-tip{display:none}

/* 侧栏目录：复用层级样式，压缩一点 */
.drawer .toc-group{margin-bottom:6px}
.drawer .toc-group-head{padding:10px 12px;font-size:13px}
.drawer .toc-item{padding:9px 12px 9px 22px;font-size:13px}
.drawer .toc-flat .toc-item{padding-left:12px}
.chapter-list{padding:0 14px calc(20px + var(--sab)) !important}

/* 搜索命中高亮 */
mark.hl{background:rgba(232,82,74,.28);color:var(--fg);border-radius:3px;padding:0 1px}

/* 合成进度角标（正文已渲染时显示，不遮挡阅读） */
.synth-badge{
  position:fixed; right:14px; bottom:calc(112px + var(--sab));
  display:flex; align-items:center; gap:6px;
  padding:6px 12px; border-radius:999px;
  background:rgba(24,28,36,.9); color:#cfd6e0;
  font-size:12px; line-height:1; z-index:40;
  backdrop-filter:blur(8px); -webkit-backdrop-filter:blur(8px);
  border:1px solid rgba(255,255,255,.08);
  pointer-events:none;
}
.sb-spin{
  width:11px; height:11px; border-radius:50%;
  border:1.6px solid rgba(255,255,255,.22); border-top-color:#e8524a;
  animation:sbSpin .7s linear infinite;
}
@keyframes sbSpin{to{transform:rotate(360deg)}}

/* 书库加载失败提示 */
.empty-hint .eh-err{color:#e8524a;font-size:14px;font-weight:600;margin-bottom:6px}
.empty-hint .eh-sub{color:#7a8595;font-size:12.5px;line-height:1.6;margin-bottom:14px;max-width:280px;margin-left:auto;margin-right:auto}
.empty-hint .eh-retry{
  display:inline-block;padding:8px 22px;border-radius:999px;
  background:var(--accent,#e8524a);color:#fff;border:none;
  font-size:13.5px;font-weight:600;cursor:pointer;
}
.empty-hint .eh-retry:active{opacity:.8}