:root{
  --cream:#F6F8FA; --cream-2:#EAF0F5; --red:#C0392B; --red-dark:#9E2A1E;
  --orange:#E08A3C; --brown:#33414E; --brown-soft:#5E6B78;
  --line:#E1E8EE; --shadow:0 4px 16px rgba(51,65,85,.08);
  --blue:#0F4C81;
}
*{box-sizing:border-box;margin:0;padding:0}
[hidden]{display:none !important}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;font-size:15px;background:#fff;color:var(--brown);line-height:1.5}

/* top bar */
.topbar{display:flex;align-items:center;gap:14px;padding:7px 20px;background:linear-gradient(90deg,#ffffff,#F4F8FB);border-bottom:3px solid var(--red);position:sticky;top:0;z-index:40}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo{width:36px;height:36px;border-radius:10px;background:var(--red);display:grid;place-items:center;box-shadow:var(--shadow);flex:0 0 auto}
.logo svg{width:22px;height:22px;display:block}
.brand-text h1{font-size:16.5px;color:var(--brown);line-height:1.15}
.brand-text p{font-size:11px;color:var(--brown-soft);line-height:1.2}
.search-box{flex:1;max-width:460px;position:relative}
.search-box input{width:100%;padding:9px 16px;border:2px solid var(--red);border-radius:24px;font-size:14px;background:var(--cream);outline:none;transition:.2s}
/* 顶栏工具区：共X本 + 年份 + 排序（原第二层 sticky 结果栏合并进来，去掉遮挡） */
.tb-tools{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.tb-count{font-size:14px;font-weight:800;color:var(--brown);white-space:nowrap}
.tb-sel{padding:7px 8px;border:1px solid var(--line);border-radius:8px;background:#fff;font-size:13px;cursor:pointer;max-width:140px}
@media(max-width:1460px){.brand-text p{display:none}.search-box{max-width:320px}}
@media(max-width:1220px){.tb-sel{max-width:104px;font-size:12px;padding:6px}.tb-count{font-size:13px}}
.search-box input:focus{background:#fff}
.suggest{position:absolute;top:105%;left:0;right:0;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);max-height:320px;overflow:auto;z-index:60}
.suggest div{padding:9px 16px;font-size:13px;cursor:pointer;border-bottom:1px solid #f3efe7}
.suggest div:last-child{border-bottom:none}
.suggest div:hover{background:var(--cream-2)}
.suggest .s-meta{color:var(--brown-soft);font-size:11px}
.cart-area{display:flex;align-items:center;gap:10px;flex:0 0 auto}
/* 顶部选书单入口＝原底部固定栏搬上来：已选统计 + 查看按钮（同一个红药丸） */
.cart-btn{flex:0 0 auto;display:flex;align-items:center;gap:14px;border:none;border-radius:24px;cursor:pointer;
  background:linear-gradient(135deg,#C0392B,#A62C20);color:#fff;padding:8px 12px 8px 18px;
  box-shadow:0 4px 14px rgba(192,57,43,.28);transition:.15s}
.cart-btn:hover{background:linear-gradient(135deg,#CB4030,#B0301F);transform:translateY(-1px);box-shadow:0 7px 18px rgba(192,57,43,.38)}
.cb-stats{display:flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;white-space:nowrap;letter-spacing:.3px}
.cb-stats b{font-size:17px;font-weight:900;margin:0 2px;color:#fff;display:inline-block;transition:.15s}
.cb-price b{color:#FFE08A}
.cb-stats b.pop{animation:selpop .32s ease}
@keyframes selpop{0%{transform:scale(1)}40%{transform:scale(1.3)}100%{transform:scale(1)}}
.cb-dot{opacity:.45}
.cb-view{font-size:12.5px;font-weight:800;background:#fff;color:var(--red);padding:6px 14px;border-radius:16px;white-space:nowrap}
.cart-btn:hover .cb-view{background:#FFF3EF}

/* tabs */
.tabs{display:flex;gap:8px;padding:7px 24px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:69px;z-index:30;overflow-x:auto}
.tab{padding:8px 16px;font-size:14px;font-weight:700;color:var(--brown-soft);cursor:pointer;white-space:nowrap;border-radius:10px 10px 0 0;border-bottom:3px solid transparent;display:flex;align-items:center;gap:6px;letter-spacing:.5px;transition:.15s}
.tab:hover{color:var(--red);background:var(--cream-2)}
.tab.active{color:#fff;font-weight:800;background:var(--red);border-bottom-color:var(--red-dark);box-shadow:0 3px 10px rgba(192,57,43,.25)}
.tab .tic{font-size:15px;line-height:1}
.tab-cnt{font-size:12px;opacity:.7;font-weight:600}
.tab.active .tab-cnt{color:#fff}
.tab-cnt.building{color:#b0a596;font-size:11px}

/* layout */
.layout{display:flex;align-items:flex-start;gap:20px;padding:20px 24px;max-width:1500px;margin:0 auto}
.sidebar{flex:0 0 232px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:8px 0 14px;position:sticky;top:62px;max-height:calc(100vh - 82px);overflow:auto}
.facet{border-bottom:1px solid #f1ebdf;padding:12px 16px}
.facet:last-of-type{border-bottom:none}
.facet h3{font-size:13px;color:var(--red);margin-bottom:8px}
.facet-list{list-style:none;display:flex;flex-direction:column;gap:2px}
.facet-list li{padding:6px 10px;border-radius:8px;font-size:13px;color:var(--brown);cursor:pointer;display:flex;justify-content:space-between;gap:8px}
.facet-list li:hover{background:var(--cream-2)}
.facet-list li.active{background:var(--red);color:#fff}
.facet-list li .cnt{font-size:11px;opacity:.7}

/* 分类树：三大馆可折叠 + 悬浮子分类面板 */
.cat-tree{display:flex;flex-direction:column;font-size:15px;gap:2px}
.cat-hall{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:800;color:var(--brown);margin:10px 8px 4px;padding:11px 11px;border-radius:11px;cursor:pointer;background:#fff;border:1.5px solid var(--line);border-left:5px solid var(--hc,#8A6D3B);position:relative;letter-spacing:0;transition:background .15s,border-color .15s,color .15s}
.cat-hall .ic{font-size:20px;line-height:1;filter:saturate(1.15);flex:0 0 auto}
.cat-hall .t{flex:1 0 auto;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
.cat-hall::after{content:'▸';position:absolute;right:12px;font-size:13px;color:var(--brown-soft);font-weight:700}
.cat-hall:hover{background:color-mix(in srgb,var(--hc) 12%,#fff);border-color:var(--hc)}
.cat-hall:hover::after{color:var(--hc)}
.cat-hall.open::after{content:'▾'}
.cat-hall.active{background:var(--hc);color:#fff;border-color:var(--hc)}
.cat-hall.active::after{color:#fff}
.cat-hall .cnt{margin-right:14px;font-size:12px;font-weight:800;background:color-mix(in srgb,var(--hc) 14%,#fff);color:var(--hc);border-radius:11px;padding:1px 7px;min-width:22px;text-align:center;flex:0 0 auto}
.cat-hall .cnt.building{font-size:11px;font-weight:400;color:#a99e8f;background:var(--cream-2)}
.cat-hall.active .cnt{color:#fff;background:rgba(255,255,255,.22)}
.cat-building{font-size:12px;color:#a99e8f;padding:4px 16px 10px}
.cat-hall-body{display:flex;flex-direction:column;margin:0 6px 8px}
.cat-major{position:relative;display:flex;justify-content:space-between;align-items:center;padding:8px 12px 8px 15px;border-radius:8px;font-size:14.5px;font-weight:700;color:var(--brown);cursor:pointer;border-left:5px solid var(--c,#8A6D3B)}
.cat-major:hover{background:color-mix(in srgb, var(--c) 18%, #fff)}
.cat-major.active{background:var(--c,#C0392B);color:#fff;border-left-color:var(--c,#C0392B)}
.cat-major.empty{color:#8A7B68}
.cat-major .cnt{font-size:12.5px;opacity:1;font-weight:800;background:var(--cream-2);color:var(--brown);border-radius:11px;padding:0 9px;min-width:26px;text-align:center}
.cat-major.active .cnt{background:rgba(255,255,255,.22);color:#fff}
.cat-major.open::before{content:'▾';position:absolute;left:5px;top:10px;font-size:11px;color:var(--brown-soft)}
.cat-major.open{padding-left:24px}

/* 内联二级分类（点击大类即在左侧树内展开，常驻可点） */
.cat-subs{display:flex;flex-direction:column;margin:2px 0 6px 12px;padding-left:11px;border-left:3px solid var(--line)}
.cat-sub{display:flex;justify-content:space-between;align-items:center;padding:7px 11px;border-radius:7px;font-size:15.5px;font-weight:700;color:var(--brown);cursor:pointer;position:relative;gap:10px}
.cat-sub:hover{background:color-mix(in srgb, var(--c) 20%, #fff)}
.cat-sub.active{background:var(--c);color:#fff;font-weight:800}
.cat-sub .cnt{font-size:12.5px;opacity:1;font-weight:800;background:var(--cream-2);color:var(--brown);border-radius:11px;padding:0 9px;min-width:26px;text-align:center;flex:0 0 auto}
.cat-sub.active .cnt{background:rgba(255,255,255,.22);color:#fff}
.cat-sub.empty{color:#8A7B68}
.cat-sub.empty .cnt{background:#F0EAE0;color:#B0A190}

/* 内联三级分类（点击二级即在左侧树内再下钻一层，仿当当三级） */
.cat-thirds{display:flex;flex-direction:column;margin:2px 0 8px 14px;padding-left:12px;border-left:2px dashed var(--c,#8A6D3B)}
.cat-third{display:flex;justify-content:space-between;align-items:center;padding:6px 11px;border-radius:7px;font-size:13.5px;font-weight:700;color:var(--brown);cursor:pointer;position:relative;gap:10px}
.cat-third:hover{background:color-mix(in srgb, var(--c) 24%, #fff)}
.cat-third.active{background:var(--c);color:#fff;font-weight:800}
.cat-third .cnt{font-size:12px;opacity:1;font-weight:800;background:var(--cream-2);color:var(--brown);border-radius:11px;padding:0 9px;min-width:26px;text-align:center;flex:0 0 auto}
.cat-third.active .cnt{background:rgba(255,255,255,.22);color:#fff}
.cat-third.empty{color:#8A7B68}
.cat-third.empty .cnt{background:#F0EAE0;color:#B0A190}

/* 悬浮子分类面板（仿博库网：悬停大类右侧浮出，置于顶层不被遮挡，加亮加粗） */
.cat-flyout{position:fixed;z-index:201;background:rgba(255,255,255,.985);border:1px solid rgba(58,46,37,.12);border-left:6px solid var(--c,#C0392B);border-radius:14px;box-shadow:0 12px 40px rgba(0,0,0,.16);padding:10px;max-height:90vh;overflow:auto;min-width:580px}
.cat-flyout .ff-cols{display:flex;gap:0;align-items:stretch}
.cat-flyout .ff-col{padding:0 4px}
.cat-flyout .ff-majors{width:216px;flex:0 0 auto;border-right:1px solid var(--line)}
.cat-flyout .ff-subs{display:grid;grid-template-columns:repeat(2,minmax(172px,1fr));gap:5px 12px;align-content:start;flex:1 1 auto;width:auto;padding-left:12px;border-right:none}
.cat-flyout .ff-col:last-child{border-right:none}
/* 无二级的馆：面板按内容收窄，不留空白列 */
.cat-flyout.no-subs{min-width:0}
.cat-flyout.no-subs .ff-subs,.cat-flyout.no-subs .ff-thirds{display:none}
.cat-flyout.no-subs .ff-majors{border-right:none}
.cat-flyout .ff-majors .ff-major{display:flex;justify-content:space-between;align-items:center;padding:10px 14px;border-radius:8px;font-size:15px;font-weight:700;color:var(--brown);cursor:pointer;gap:10px;border-left:5px solid var(--c,#8A6D3B)}
.cat-flyout .ff-majors .ff-major:hover{background:color-mix(in srgb, var(--c) 20%, #fff)}
.cat-flyout .ff-majors .ff-major.active{background:var(--c);color:#fff;border-left-color:#fff}
.cat-flyout .ff-majors .ff-major .cnt{font-size:13px;font-weight:800;background:var(--cream-2);color:var(--brown);border-radius:11px;padding:1px 9px;min-width:28px;text-align:center;flex:0 0 auto}
.cat-flyout .ff-majors .ff-major.active .cnt{background:rgba(255,255,255,.22);color:#fff}
.cat-flyout .ff-building{padding:18px 16px;color:var(--brown-soft);font-size:14px}
.cat-flyout .ff-subs .ff-sub,.cat-flyout .ff-thirds .ff-sub{border-left:5px solid var(--c,#8A6D3B)}
.cat-flyout .ff-head{color:#fff;font-size:16px;font-weight:800;padding:11px 14px;border-radius:9px;margin-bottom:7px;letter-spacing:.5px;box-shadow:0 2px 6px rgba(0,0,0,.15)}
.cat-flyout .ff-sub{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;border-radius:8px;font-size:14px;font-weight:700;color:var(--brown);cursor:pointer;gap:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.cat-flyout .ff-sub:hover{background:color-mix(in srgb, var(--c) 22%, #fff)}
.cat-flyout .ff-sub.active{background:var(--c);color:#fff}
.cat-flyout .ff-sub.empty{color:#8A7B68;cursor:default}
.cat-flyout .ff-lab{padding:10px 12px 3px;font-size:12px;font-weight:800;color:#9A8B79;letter-spacing:1px}
.cat-flyout .ff-col-hd{grid-column:1/-1;display:flex;align-items:baseline;gap:6px;padding:7px 12px;margin-bottom:6px;border-radius:7px;background:color-mix(in srgb,var(--c,#8A6D3B) 13%,#fff);border-left:4px solid var(--c,#8A6D3B);color:var(--c,#8A6D3B);font-weight:800;font-size:13px;letter-spacing:.5px}
.cat-flyout .ff-col-hd small{font-weight:600;font-size:11px;opacity:.85;letter-spacing:0}
.cat-flyout.pic-hall .ff-majors{--c:#8A6D3B;display:grid;grid-template-columns:repeat(2,minmax(176px,1fr));gap:5px 12px;width:auto;flex:1 1 auto;border-right:none;align-content:start}
.cat-flyout.pic-hall .ff-subs{--c:#0F7B8A}
.cat-flyout .ff-thirds{--c:#C0392B}
/* 绘本馆：第三列是「荣誉·推荐」明细，与左二列（板块 | 阅读主题）并列 */
.cat-flyout.pic-hall .ff-thirds{width:236px;flex:0 0 auto;border-left:1px solid var(--line);padding-left:12px}
.cat-flyout.pic-hall .ff-thirds .ff-lab{grid-column:auto}
/* 荣誉·推荐选中时文字要保持白色（否则红底红字看不清） */
.cat-flyout .ff-major.ff-honor.active span:first-child{color:#fff}
.cat-flyout .ff-sub.empty:hover{background:transparent}
.cat-flyout .ff-sub .cnt{font-size:13px;font-weight:800;opacity:1;background:color-mix(in srgb,var(--c) 16%,#fff);color:var(--c);border-radius:11px;padding:1px 9px;min-width:28px;text-align:center;flex:0 0 auto}
.cat-flyout .ff-sub.empty .cnt{background:#F0EAE0;color:#B0A190}
/* 标签永不换行：长名（如“中国近现代小说”）往右铺满一行，超出才省略号 */
.cat-flyout .ff-major>span:first-child,.cat-flyout .ff-sub>span:first-child{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;flex:1 1 auto}
.cat-flyout .ff-head{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}

/* content */
.content{flex:1;min-width:0}
/* 只剩已选筛选条件标签，不再 sticky（避免下拉时遮挡卡片） */
.result-bar{display:flex;align-items:center;gap:12px;margin-bottom:10px;flex-wrap:wrap;background:transparent;padding:0}
.result-bar:empty{display:none}
#result-count{font-size:14px;font-weight:800}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{font-size:12px;background:var(--cream-2);color:var(--brown);border-radius:12px;padding:3px 10px;display:flex;align-items:center;gap:6px}
.chip b{color:var(--red)}
.chip .x{cursor:pointer;font-weight:700}
.sort{margin-left:auto;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;font-size:13px;cursor:pointer}

/* 一行一条书单：单列铺满整行，封面放大、字段横排，横向信息不挤 */
.book-list{display:grid;grid-template-columns:minmax(0,1fr);gap:12px}
.book-row{display:flex;gap:12px;align-items:stretch;background:#fff;border:1px solid var(--line);border-left:4px solid var(--c,#C0392B);border-radius:12px;padding:11px 12px;box-shadow:var(--shadow);transition:border-color .18s,box-shadow .18s}
/* 悬停不再位移（避免整片卡片上下晃动），只提亮边框与阴影 */
.book-row:hover{border-color:var(--orange);box-shadow:0 8px 22px rgba(51,65,85,.12)}
.br-cover{width:148px;flex:0 0 auto;align-self:flex-start;background:#fff;border:1px solid var(--line);border-radius:10px}
.br-cover img.br-img{width:100%;height:auto;display:block}
.br-cover div.br-img{width:100%;aspect-ratio:3/4;display:grid;place-items:center;color:#fff;font-weight:700;font-size:14px;line-height:1.3;text-align:center;padding:8px}
.br-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:7px}
.br-tags{gap:5px;margin-top:1px}
.br-title{font-size:16px;font-weight:800;color:#232D36;line-height:1.35}
.br-fields{display:flex;flex-wrap:wrap;align-items:baseline;gap:3px 22px;font-size:13px}
/* 单行显示，超长省略；鼠标悬停有 title 全称。横排紧挨着走，不再被 4 栏网格拉开距离 */
.bf{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;color:#33414E;font-weight:400;line-height:1.55;word-break:break-word;min-width:0;flex:0 0 auto;max-width:100%}
.bf i{font-style:normal;color:#7A8794;margin-right:6px;font-weight:400}
.br-link{margin-top:4px}
.br-link a{display:inline-block;font-size:12.5px;color:#C0392B;text-decoration:none;font-weight:600;padding:2px 9px;border:1px solid rgba(192,57,43,.35);border-radius:12px;transition:background .15s,color .15s}
.br-link a:hover{background:#C0392B;color:#fff;text-decoration:none}
.br-intro{font-size:12.5px;color:#5A6774;line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;cursor:pointer}
.br-buy{display:flex;align-items:center;gap:10px;margin-top:auto;padding-top:6px;flex-wrap:wrap}
.br-buy .price{font-size:19px;font-weight:800;color:var(--red);letter-spacing:.5px}
@media(max-width:640px){.book-row{flex-wrap:wrap}.br-cover{width:122px}}
.card{position:relative;background:#fff;border:1px solid var(--line);border-top:3px solid var(--c,#C0392B);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;transition:border-color .18s,box-shadow .18s;box-shadow:var(--shadow)}
.card:hover{border-color:var(--orange);box-shadow:0 12px 26px rgba(51,65,85,.16);z-index:30}
.cover{width:100%;height:auto;display:block;background:var(--cream-2)}
.cover-ph{aspect-ratio:3/4;display:grid;place-items:center;text-align:center;padding:10px;color:#fff;font-weight:700;font-size:14px;line-height:1.3}
.card-body{padding:10px 11px 12px;display:flex;flex-direction:column;gap:6px;flex:1}
.card-title{font-size:14px;font-weight:700;line-height:1.35;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:38px;color:var(--brown)}
.card-meta{font-size:12.5px;color:#3A2E25;line-height:1.5;display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden;font-weight:400}
.tags{display:flex;flex-wrap:wrap;gap:4px;margin-top:1px}
.tag{font-size:11px;padding:2px 8px;border-radius:9px;background:var(--cream-2);color:#5E6B78;font-weight:600}
.tag.cat{background:#FBEAE8;color:var(--red)}
.tag.sub{background:#EEF3F8;color:#3A6EA5;font-weight:700}
.tag.third{background:var(--c,#C0392B);color:#fff;font-weight:700}
.tag.age{background:#E4EFF0;color:var(--blue)}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:6px;padding-top:6px}
.price{font-size:15px;font-weight:700;color:var(--red)}
.add-btn{border:none;background:var(--red);color:#fff;border-radius:10px;padding:11px 10px;font-size:14px;font-weight:700;cursor:pointer;white-space:nowrap;box-shadow:0 2px 8px rgba(192,57,43,.25);transition:.15s}
.add-btn:hover{background:var(--red-dark)}
.add-btn.added{background:var(--cream-2);color:var(--brown-soft);box-shadow:none}

/* 列表行数量步进器 —— 参照豆包选书工具样式 */
.br-buy.added{background:none;border:none;border-radius:0;padding:0;gap:14px}
.br-buy.added .price{font-size:18px}
.row-stepper{display:inline-flex;align-items:center;gap:5px}
.row-stepper .qbtn{width:26px;height:26px;border:1.6px solid var(--red);background:#fff;border-radius:5px;cursor:pointer;font-size:16px;font-weight:800;line-height:1;color:var(--red);display:grid;place-items:center;transition:.12s}
.row-stepper .qbtn:hover{background:var(--red);color:#fff}
.row-stepper .qnum{min-width:28px;text-align:center;font-size:16px;font-weight:800;color:var(--red)}
.rm-link{border:none;background:none;color:var(--brown-soft);cursor:pointer;font-size:13px;text-decoration:underline;padding:4px 6px}
.rm-link:hover{color:var(--red)}
.br-cover{position:relative}
.br-check{position:absolute;top:7px;left:7px;width:26px;height:26px;border-radius:50%;background:#16B364;color:#fff;display:grid;place-items:center;font-size:15px;font-weight:800;box-shadow:0 0 0 2.5px #fff,0 3px 8px rgba(0,0,0,.32);z-index:2}

/* 重点推荐角标 */
.recommend-badge{position:absolute;top:8px;left:8px;background:var(--red);color:#fff;font-size:11px;font-weight:700;padding:3px 9px;border-radius:11px;box-shadow:0 2px 6px rgba(0,0,0,.25);z-index:2}

.empty{text-align:center;color:var(--brown-soft);padding:40px}
.sentinel{height:1px}
.load-more{display:block;margin:18px auto 0;padding:11px 28px;border:1px solid var(--red);background:#fff;color:var(--red);border-radius:22px;cursor:pointer;font-size:14px}
.load-more:hover{background:var(--red);color:#fff}

/* cart */
.overlay{position:fixed;inset:0;background:rgba(58,46,37,.4);z-index:50}
.cart{position:fixed;top:0;right:0;height:100%;width:390px;max-width:92vw;background:var(--cream);z-index:51;display:flex;flex-direction:column;box-shadow:-6px 0 24px rgba(0,0,0,.15)}
.cart-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:2px solid var(--red)}
.cart-head h2{font-size:17px}
.icon-btn{border:none;background:none;font-size:18px;cursor:pointer;color:var(--brown-soft)}
.cart-list{flex:1;overflow:auto;padding:12px 16px;display:flex;flex-direction:column;gap:10px}
.cart-item{display:flex;gap:10px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px}
.cart-item .ci-cover{width:44px;height:60px;object-fit:cover;border-radius:6px;flex:0 0 auto;background:var(--cream-2)}
.cart-item .ci-ph{width:44px;height:60px;border-radius:6px;flex:0 0 auto;display:grid;place-items:center;font-size:9px;color:#fff;padding:2px;text-align:center}
.cart-item .ci-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}
.cart-item .ci-title{font-size:12.5px;font-weight:700;line-height:1.25}
.cart-item .ci-meta{font-size:11px;color:var(--brown-soft)}
.qty{display:flex;align-items:center;gap:6px;margin-top:2px}
.qty button{width:22px;height:22px;border:1px solid var(--line);background:#fff;border-radius:6px;cursor:pointer;font-size:14px;line-height:1}
.qty span{font-size:13px;min-width:18px;text-align:center}
.ci-price{font-size:13px;font-weight:700;color:var(--red)}
.ci-remove{border:none;background:none;color:#bbb;font-size:12px;cursor:pointer;align-self:flex-start}
.cart-foot{border-top:2px solid var(--red);padding:10px 18px;background:#fff}
.cart-summary{display:flex;gap:6px;margin-bottom:8px}
.cs-item{flex:1;background:var(--cream);border:1px solid var(--line);border-radius:10px;padding:6px 4px;text-align:center}
.cs-item.price{flex:1.5;background:#EAF2FB;border-color:#CFE0F0}
.cs-num{display:block;font-size:16px;font-weight:800;color:var(--red);line-height:1.1}
.cs-item.price .cs-num{color:var(--red-dark)}
.cs-lbl{display:block;font-size:10.5px;color:var(--brown-soft);margin-top:2px}
.ci-vol{display:inline-block;font-size:10px;font-weight:400;background:#FBE7D8;color:var(--red);border-radius:8px;padding:0 6px;margin-left:4px;vertical-align:middle}
.cart-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.primary{border:none;background:var(--red);color:#fff;padding:9px 14px;border-radius:8px;cursor:pointer;font-size:13px}
.primary:hover{background:var(--red-dark)}
.ghost{border:1px solid var(--red);background:#fff;color:var(--red);padding:9px 14px;border-radius:8px;cursor:pointer;font-size:13px}
.link{border:none;background:none;color:var(--brown-soft);cursor:pointer;font-size:12px;text-decoration:underline}

/* 底部固定已选栏已移除（并入顶部选书单入口），页面不再预留底部空间 */
body{padding-bottom:0}

/* 补封面：hover 按钮 / 拖放高亮 / 提示条 */
.br-coverbtn{position:absolute;left:0;right:0;bottom:0;border:none;background:rgba(0,0,0,.66);color:#fff;font-size:11px;font-weight:700;padding:4px 0;cursor:pointer;opacity:0;transition:.15s;letter-spacing:.5px;display:none}
body.edit-mode .br-coverbtn{display:block}
body.edit-mode .br-cover:hover .br-coverbtn{opacity:1}
.br-coverbtn:hover{background:var(--red)}
.br-cover.dropping{outline:3px dashed var(--red);outline-offset:-3px}
.toast{position:fixed;left:50%;bottom:92px;transform:translateX(-50%) translateY(8px);background:rgba(51,65,78,.96);color:#fff;padding:11px 22px;border-radius:24px;font-size:13.5px;z-index:60;opacity:0;transition:.2s;pointer-events:none;max-width:82vw;text-align:center;box-shadow:0 6px 20px rgba(0,0,0,.25)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 悬停封面：统一走 JS 浮层大图（.hover-zoom，520px、向右侧弹出） ---------- */
.book-row{position:relative;z-index:1}
.book-row:hover{z-index:20}
.br-cover{overflow:visible}
.br-cover:hover{z-index:60}
.card{overflow:visible}
.card:hover{overflow:visible;z-index:60}

/* ---------- 封面大图预览（灯箱，点击打开） ---------- */
.br-cover{cursor:zoom-in}
.lightbox{position:fixed;inset:0;z-index:300;background:rgba(24,17,12,.95);display:grid;place-items:center;padding:24px;animation:lbin .16s ease}
.lightbox[hidden]{display:none}
@keyframes lbin{from{opacity:0}to{opacity:1}}
/* 左右分栏：左大图 + 右完整信息（卖点介绍不用滚到底部就能看全） */
.lb-box{display:flex;flex-direction:row;align-items:flex-start;gap:26px;max-height:92vh;max-width:min(94vw,1120px)}
.lb-img{max-width:44vw;max-height:88vh;width:auto;height:auto;object-fit:contain;border-radius:10px;background:#fff;box-shadow:0 26px 70px rgba(0,0,0,.6);flex:0 0 auto}
.lb-ph{width:min(38vw,340px);aspect-ratio:3/4;border-radius:10px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:22px;text-align:center;padding:20px;box-shadow:0 26px 70px rgba(0,0,0,.6);flex:0 0 auto}
.lb-side{flex:1;min-width:0;max-height:88vh;overflow:auto;padding:16px 18px;background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.1);border-radius:14px}
.lb-cap{color:#fff;text-align:left;font-size:16px;font-weight:800;line-height:1.45}
.lb-cap small{display:block;margin-top:7px;font-weight:500;font-size:12.5px;opacity:.82;line-height:1.75;letter-spacing:.2px}
.lb-title{font-size:21px;font-weight:800;line-height:1.4}
.lb-meta{display:flex;flex-direction:column;gap:7px;margin-top:14px;font-size:13.5px;font-weight:500;opacity:.94}
.lb-meta span{display:flex;gap:2px;border-bottom:1px dashed rgba(255,255,255,.16);padding-bottom:6px}
.lb-meta i{font-style:normal;opacity:.6;margin-right:8px;font-weight:700;flex:0 0 62px}
.lb-intro{margin-top:14px;padding:12px 16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);border-radius:12px;text-align:left}
.lb-intro b{display:block;color:#FFD9A0;font-size:12.5px;letter-spacing:.5px;margin-bottom:6px}
.lb-intro p{font-size:13.5px;font-weight:400;line-height:1.85;opacity:.95;white-space:pre-wrap}
.lb-btns{display:flex;gap:10px}
.lb-btn{border:none;border-radius:22px;padding:10px 24px;font-size:13.5px;font-weight:700;cursor:pointer;background:var(--red);color:#fff;box-shadow:0 6px 18px rgba(0,0,0,.3)}
.lb-btn:hover{background:#CB4030}
.lb-close{position:absolute;top:16px;right:20px;width:42px;height:42px;border-radius:50%;border:none;background:rgba(255,255,255,.14);color:#fff;font-size:19px;cursor:pointer;line-height:1}
.lb-close:hover{background:rgba(255,255,255,.28)}

/* ---------- 特色书单（跨馆策展清单） ---------- */
/* 专题索引页：卡片按最小 300px 自动铺多列（不跟书目视图的"一行一条"走） */
.book-list.topic-index{grid-template-columns:minmax(0,1fr)}
.topic-card{background:#fff;border:1px solid var(--line);border-left:5px solid var(--c,#0F7B8A);border-radius:14px;padding:16px 18px;cursor:pointer;box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s,border-color .15s}
.topic-card:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(15,123,138,.16);border-color:var(--c,#0F7B8A)}
.tc-name{font-size:18px;font-weight:800;color:var(--brown);line-height:1.3}
.tc-desc{font-size:13px;color:#5A6774;line-height:1.6;margin-top:6px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.tc-meta{font-size:12px;font-weight:700;color:var(--c,#0F7B8A);margin-top:10px}
.topic-banner{background:linear-gradient(120deg,color-mix(in srgb,var(--c,#0F7B8A) 88%,#000),var(--c,#0F7B8A));color:#fff;border-radius:14px;padding:18px 22px;margin-bottom:12px;box-shadow:0 8px 22px rgba(15,123,138,.22)}
.topic-banner .tb-name{font-size:21px;font-weight:800;line-height:1.3}
.topic-banner .tb-desc{font-size:13px;opacity:.92;line-height:1.6;margin-top:6px;max-width:900px}
.topic-banner .tb-meta{font-size:12.5px;font-weight:700;opacity:.95;margin-top:10px}
.topic-chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
/* 届次 / 年份徽章：暖底+红描边，比普通 chip 更醒目（馆配老师靠这个认年份） */
.topic-chips .ftab{background:linear-gradient(180deg,#FFF8EA,#FDEACB);border:1px solid #E5C182;border-radius:20px;padding:8px 16px;font-size:14px;font-weight:800;color:#8A4B12;letter-spacing:.3px;display:inline-flex;align-items:center;gap:7px;cursor:pointer;transition:.15s;box-shadow:inset 0 1px 0 #fff,0 2px 6px rgba(180,120,40,.10)}
.topic-chips .ftab i{font-style:normal;font-size:12px;font-weight:800;background:#C0392B;color:#fff;border-radius:10px;padding:1px 8px}
.topic-chips .ftab:hover{border-color:#C0392B;color:#C0392B;transform:translateY(-1px)}
.topic-chips .ftab.on{background:linear-gradient(180deg,#C0392B,#A53023);color:#fff;border-color:#A53023;box-shadow:0 4px 12px rgba(192,57,43,.28)}
.topic-chips .ftab.on i{background:#fff;color:#C0392B}
/* 一键到顶 */
#back-top{position:fixed;right:24px;bottom:28px;z-index:120;display:none;align-items:center;gap:4px;padding:11px 16px;border-radius:24px;border:1px solid #E5C182;background:linear-gradient(180deg,#FFF8EA,#FDEACB);color:#8A4B12;font-size:13px;font-weight:800;cursor:pointer;box-shadow:0 6px 18px rgba(120,80,30,.18)}
#back-top:hover{border-color:#C0392B;color:#C0392B;transform:translateY(-1px)}
#back-top.show{display:inline-flex}
.cat-hall.topic-hall{--hc:#0F7B8A}
.cat-flyout .ff-list{display:flex;flex-direction:column;gap:2px;padding:2px}
.cat-flyout .ff-topic{display:flex;flex-direction:column;gap:1px;padding:9px 12px;border-radius:8px;cursor:pointer;transition:background .12s}
.cat-flyout .ff-topic:hover{background:color-mix(in srgb,var(--c,#0F7B8A) 12%,#fff)}
.cat-flyout .ff-topic .ft{font-size:14px;font-weight:700;color:var(--brown)}
.cat-flyout .ff-topic .fc{font-size:11.5px;color:var(--brown-soft);font-weight:600}

/* ---------- 当当式悬停大图浮层 ---------- */
.hover-zoom{position:fixed;z-index:280;width:min(520px,46vw);border-radius:12px;overflow:hidden;background:#fff;box-shadow:0 26px 70px rgba(24,17,12,.46);border:1px solid rgba(255,255,255,.7);opacity:0;transform:translateY(6px) scale(.97);transition:opacity .13s ease,transform .13s ease;pointer-events:none}
.hover-zoom.show{opacity:1;transform:none}
/* 放大预览：整图平铺不裁切，仅受视口高度约束（高图等比缩小，侧边留白，绝不裁掉内容） */
.hover-zoom img{width:auto;height:auto;max-width:100%;max-height:80vh;display:block;margin:0 auto}
.hover-zoom .hz-ph{aspect-ratio:3/4;display:grid;place-items:center;text-align:center;padding:26px;color:#fff;font-weight:800;font-size:24px;line-height:1.5}

@media (max-width:900px){
  /* 手机端：分类树不再隐藏 —— 触屏没有 hover，改成页面顶部可点开的导航 */
  .layout{flex-direction:column;gap:12px;padding:12px 12px 22px}
  .sidebar{flex:0 0 auto;width:100%;position:static;max-height:none;overflow:visible;border-radius:12px;padding:6px 0 10px}
  .cat-tree.mobile{display:flex;flex-direction:column;gap:5px;padding:0 8px}
  .cat-tree.mobile .cat-hall{margin:4px 0 0;padding:10px 12px;font-size:15px}
  .cat-tree.mobile .m-caret{margin-left:2px;font-size:12px;color:#9A8B79;flex:0 0 auto}
  .m-chips{display:flex;flex-wrap:wrap;gap:6px;padding:7px 4px 10px 8px;border-bottom:1px dashed var(--line)}
  .m-chip{display:inline-flex;align-items:center;gap:5px;border:1px solid var(--line);background:#fff;color:#4A3B2C;border-radius:999px;padding:7px 12px;font-size:13px;line-height:1;cursor:pointer;font-family:inherit}
  .m-chip i{font-style:normal;font-size:11px;color:#9A8B79}
  .m-chip.on{background:#C0392B;border-color:#C0392B;color:#fff}
  .m-chip.on i{color:rgba(255,255,255,.85)}
  .m-sep{flex:0 0 100%;font-size:12px;font-weight:800;color:#9A8B79;letter-spacing:1px;padding:7px 0 1px}
  .brand-text p{display:none}
  .cb-stats{display:none}
  .cart-btn{padding:8px 10px 8px 14px;gap:0}
  .lb-box{flex-direction:column;align-items:center;max-width:94vw;overflow:auto}
  .lb-img{max-width:86vw;max-height:56vh}
  .lb-side{max-height:none;overflow:visible;width:100%}
  .lb-cap{font-size:14px}
  .tb-tools{display:none}
}
@media print{
  .topbar,.tabs,.sidebar,.cart-foot .link,.suggest,.lightbox,.toast{display:none!important}
  body{padding-bottom:0!important}
  body{background:#fff}
  .card{box-shadow:none;border:1px solid #ccc}
}

/* ===== 绘本馆 主题/奖项筛选条（双轨之二） ===== */
/* 不粘顶：左侧 .sidebar 也是 sticky 常驻（🏅 荣誉·推荐入口一直在），顶部条无需占着屏幕 */
.filter-bar{display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;padding:8px 14px;background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}
.ftb-row{display:flex;align-items:center;gap:10px}
.ftb-lab{font-size:12.5px;font-weight:800;color:var(--brown);flex:0 0 auto;letter-spacing:.5px;white-space:nowrap}
.ftb-chips{display:flex;flex-wrap:wrap;gap:7px}
.ftab{display:inline-flex;align-items:center;gap:5px;border:1.5px solid var(--line);background:#fff;border-radius:20px;padding:5px 12px;font-size:12.5px;color:var(--brown);cursor:pointer;transition:.15s;line-height:1;font-family:inherit;white-space:nowrap;flex:0 0 auto}
.ftab i{font-style:normal;font-size:11px;opacity:.6;background:#f0f3f6;border-radius:10px;padding:1px 6px}
.ftab:hover{border-color:var(--red);color:var(--red)}
.ftab.t.on{background:var(--bc,#C0392B);border-color:var(--bc,#C0392B);color:#fff}
.ftab.t.on i{background:rgba(255,255,255,.28);opacity:.95;color:#fff}
.ftab.a.on{background:#B8860B;border-color:#B8860B;color:#fff}
.ftab.a.on i{background:rgba(255,255,255,.28);opacity:.95;color:#fff}
/* 顶部筛选条的「展开/收起」开关按钮 */
.ftab-tg{display:inline-flex;align-items:center;gap:6px;border:1.5px solid #E3D9CC;background:#FFF8F0;border-radius:20px;padding:5px 13px;font-size:12.5px;font-weight:800;color:#8A6D3B;cursor:pointer;line-height:1;font-family:inherit;white-space:nowrap;flex:0 0 auto;transition:.15s}
.ftab-tg i{font-style:normal;font-size:11px;opacity:.8;background:rgba(138,109,59,.13);border-radius:10px;padding:1px 6px}
.ftab-tg b{font-weight:900;font-size:10px;opacity:.55;margin-left:1px}
.ftab-tg:hover{border-color:var(--red);color:var(--red)}
.ftab-tg.on{background:#8A6D3B;border-color:#8A6D3B;color:#fff}
.ftab-tg.on i{background:rgba(255,255,255,.25);opacity:.95;color:#fff}
/* 编辑模式：开启后卡片右侧出现「✕ 移除」，可从平台删除书目 */
.tb-edit{display:inline-flex;align-items:center;border:1.5px solid var(--line);background:#fff;border-radius:16px;padding:5px 12px;font-size:12.5px;font-weight:700;color:var(--brown);cursor:pointer;line-height:1;font-family:inherit;white-space:nowrap;transition:.15s}
.tb-edit:hover{border-color:var(--red);color:var(--red)}
.tb-edit.on{background:var(--red);border-color:var(--red);color:#fff}
.br-del,.br-cat,.br-meta{display:none}
body.edit-mode .br-del{display:inline-flex;align-items:center;margin-left:8px;padding:4px 11px;border:1.5px solid #E8C4C0;background:#FFF5F4;color:#C0392B;border-radius:14px;font-size:12px;font-weight:700;cursor:pointer;font-family:inherit;line-height:1;white-space:nowrap;vertical-align:middle}
body.edit-mode .br-del:hover{background:#C0392B;border-color:#C0392B;color:#fff}
body.edit-mode .br-cat{display:inline-flex;align-items:center;margin-left:8px;padding:4px 11px;border:1.5px solid #C9D8DE;background:#F2F8FA;color:#0F7B8A;border-radius:14px;font-size:12px;font-weight:700;cursor:pointer;font-family:inherit;line-height:1;white-space:nowrap;vertical-align:middle}
body.edit-mode .br-cat:hover{background:#0F7B8A;border-color:#0F7B8A;color:#fff}
body.edit-mode .br-meta{display:inline-flex;align-items:center;margin-left:8px;padding:4px 11px;border:1.5px solid #DCC9A6;background:#FFFCF3;color:#8A6D3B;border-radius:14px;font-size:12px;font-weight:700;cursor:pointer;font-family:inherit;line-height:1;white-space:nowrap;vertical-align:middle}
body.edit-mode .br-meta:hover{background:#8A6D3B;border-color:#8A6D3B;color:#fff}
.br-catedit{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:8px;padding:9px 12px;background:#FFFDF7;border:1.5px dashed #E0CFA8;border-radius:10px}
.br-catedit .ce-lab{font-size:12px;font-weight:800;color:#8A6D3B}
.br-catedit select{font:inherit;font-size:12.5px;padding:4px 8px;border:1.5px solid var(--line);border-radius:8px;background:#fff;color:var(--brown);max-width:190px}
.br-catedit select:disabled{opacity:.45}
.br-catedit .ce-save{padding:5px 14px;border:none;background:#0F7B8A;color:#fff;border-radius:8px;font-size:12.5px;font-weight:800;cursor:pointer;font-family:inherit}
.br-catedit .ce-cancel{padding:5px 12px;border:1.5px solid var(--line);background:#fff;color:var(--brown);border-radius:8px;font-size:12.5px;cursor:pointer;font-family:inherit}
.ftab-clear{border:1px dashed var(--line);background:none;color:var(--brown-soft);border-radius:18px;padding:5px 12px;font-size:12px;cursor:pointer;font-family:inherit}
.ftab-clear:hover{color:var(--red);border-color:var(--red)}

/* ===== 卡片垃圾箱（选中删除） ===== */
.br-trash{position:absolute;top:6px;right:6px;width:30px;height:30px;border:none;border-radius:50%;background:rgba(255,255,255,.92);color:#9b8d7c;font-size:15px;line-height:1;cursor:pointer;box-shadow:0 1px 5px rgba(0,0,0,.18);z-index:30;display:none;place-items:center;transition:.12s}
body.edit-mode .br-trash{display:grid}
.br-trash:hover{color:#C0392B;background:#fff}
.br-trash.on{background:#C0392B;color:#fff;box-shadow:0 2px 8px rgba(192,57,43,.4)}
.book-row.del{border-left-color:#C0392B;background:#fff5f3}
.book-row.del .br-title{color:#C0392B}
.book-row.del .br-cover{opacity:.62}

/* ===== 底部选中删除栏 ===== */
.del-bar{position:fixed;left:0;right:0;bottom:0;z-index:90;display:flex;align-items:center;gap:14px;padding:12px 22px;background:#fff;border-top:3px solid #C0392B;box-shadow:0 -4px 18px rgba(0,0,0,.14)}
.del-bar .db-info{font-size:15px;font-weight:700;white-space:nowrap}
.del-bar .db-info b{color:#C0392B;font-size:19px;margin:0 2px}
.del-bar .db-hint{font-size:12px;color:#8a7d6e;white-space:nowrap}
.del-bar .db-sp{flex:1}
.del-bar .db-clear{border:1px solid var(--line);background:#fff;color:var(--brown);padding:10px 16px;border-radius:9px;font-size:13.5px;cursor:pointer;font-family:inherit}
.del-bar .db-clear:hover{border-color:#C0392B;color:#C0392B}
.del-bar .db-save{border:none;background:#C0392B;color:#fff;padding:11px 22px;border-radius:9px;font-size:14.5px;font-weight:800;cursor:pointer;font-family:inherit;box-shadow:0 3px 10px rgba(192,57,43,.3)}
.del-bar .db-save:hover{background:#a93226}

/* ===== 卡片 主题/奖项 徽章 ===== */
.br-badges{display:flex;flex-wrap:wrap;gap:5px;margin:7px 0 2px}
.badge{display:inline-flex;align-items:center;font-size:11px;line-height:1;padding:3px 8px;border-radius:11px;cursor:pointer;font-weight:600;border:1px solid transparent;transition:.15s}
.b-theme{background:#f1f4f7;color:var(--bc,#C0392B);border-color:color-mix(in srgb,var(--bc,#C0392B) 30%,#fff)}
.b-theme:hover{background:var(--bc,#C0392B);color:#fff}
.b-award{background:#FBF3DC;color:#9A6B00;border-color:#EAD39B}
.b-award:hover{background:#B8860B;color:#fff}
.badge.more{background:#eef1f4;color:var(--brown-soft);cursor:default}

/* ===== 左侧悬浮：荣誉·推荐 特殊分组 ===== */
.ff-major.ff-honor{background:linear-gradient(135deg,#fff,#FFF4E6);border-left:3px solid var(--red)}
.ff-major.ff-honor span:first-child{color:#9E2A1E;font-weight:800}

/* （卡片「编辑」按钮与全字段编辑弹窗样式已随功能撤销于 2026-09-16 移除） */

/* ===== 底部备案信息（法规要求：ICP 备案号须展示并链接工信部） ===== */
.site-foot{background:#FFFFFF;border-top:1px solid #EFE7DA;margin-top:30px;padding:18px 16px 28px}
.site-foot .sf-in{max-width:1100px;margin:0 auto;text-align:center;font-size:12.5px;color:#9A8B78;line-height:2}
.site-foot a{color:#9A8B78;text-decoration:none}
.site-foot a:hover{color:#8A6D3B;text-decoration:underline}
.site-foot .sf-dot{margin:0 8px;color:#D8CDBB}