:root{
  --brand:#2563eb; --brand-dark:#1d4ed8; --brand-soft:#eff6ff;
  --price:#e11d48; --ok:#16a34a; --warn:#f59e0b;
  --bg:#f6f7f9; --card:#ffffff;
  --text:#1f2937; --muted:#6b7280; --line:#e5e7eb;
  --radius:14px; --radius-sm:10px;
  --shadow:0 1px 2px rgba(16,24,40,.04),0 8px 24px rgba(16,24,40,.06);
  --maxw:1200px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--text);
  font:15px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.container{max-width:var(--maxw);margin:0 auto;padding:0 18px}
.muted{color:var(--muted)}
.small{font-size:13px}

/* ---------- 顶部 ---------- */
.topbar{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.topbar .container{display:flex;align-items:center;gap:18px;height:60px}
.logo{display:flex;align-items:center;gap:9px;font-weight:700;font-size:18px;letter-spacing:.3px}
.logo .dot{width:26px;height:26px;border-radius:8px;background:linear-gradient(135deg,var(--brand),#38bdf8);display:flex;align-items:center;justify-content:center;color:#fff;font-size:14px}
.nav{display:flex;gap:6px;flex:1;flex-wrap:wrap}
.nav a{padding:7px 12px;border-radius:8px;color:var(--muted);font-size:14px}
.nav a:hover,.nav a.on{background:var(--brand-soft);color:var(--brand-dark)}
.topbar .right{display:flex;gap:10px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid var(--line);
  background:#fff;color:var(--text);padding:9px 16px;border-radius:10px;cursor:pointer;font-size:14px;transition:.15s}
.btn:hover{border-color:#cfd4dc;background:#fafbfc}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.primary:hover{background:var(--brand-dark)}
.btn.price{background:var(--price);border-color:var(--price);color:#fff}
.btn.price:hover{filter:brightness(.94)}
.btn.lg{padding:13px 26px;font-size:16px;border-radius:12px}
.btn.block{width:100%}
.btn:disabled{opacity:.55;cursor:not-allowed}

/* ---------- 首屏 ---------- */
.hero{background:linear-gradient(135deg,#1e40af 0%,#2563eb 45%,#38bdf8 100%);color:#fff;padding:44px 0 54px}
.hero h1{margin:0 0 10px;font-size:30px;font-weight:800;letter-spacing:.5px}
.hero p{margin:0 0 22px;opacity:.9}
.searchbar{display:flex;gap:10px;max-width:620px;background:#fff;border-radius:12px;padding:6px;box-shadow:0 10px 30px rgba(0,0,0,.15)}
.searchbar input{flex:1;border:0;outline:0;padding:10px 12px;border-radius:8px;font-size:15px}
.searchbar button{border:0;background:var(--brand);color:#fff;padding:10px 22px;border-radius:8px;cursor:pointer;font-weight:600}

/* ---------- 筛选 ---------- */
.filters{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px;margin:20px 0;box-shadow:var(--shadow)}
.frow{display:flex;gap:12px;padding:9px 0;border-bottom:1px dashed var(--line)}
.frow:last-child{border-bottom:0}
.flabel{width:64px;flex:none;color:var(--muted);font-size:14px;padding-top:2px}
.fitems{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:5px 13px;border-radius:999px;background:#f3f4f6;color:#4b5563;font-size:13.5px;transition:.15s;border:1px solid transparent;cursor:pointer}
.chip:hover{background:#e8edf7}
.chip.on{background:var(--brand);color:#fff}
.chip .ic{width:18px;height:18px;border-radius:5px;object-fit:cover;vertical-align:-4px;margin-right:5px}
.chip.sub{background:#fff;border-color:var(--line);color:#6b7280}
.chip.sub.on{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- 分类下拉筛选（details/summary 原生实现，不依赖 JS） ---------- */
.catfilter{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin:18px 0;box-shadow:var(--shadow);z-index:30}
.cf-dims{display:flex;gap:8px;padding:10px 11px;align-items:stretch;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.cf-dims::-webkit-scrollbar{display:none}
.cf-dim{flex:1 1 auto;min-width:88px;position:static}
.cf-tab{display:flex;align-items:center;justify-content:center;gap:6px;
  border:1px solid var(--line);background:#f8fafc;color:#374151;border-radius:10px;padding:9px 10px;
  cursor:pointer;font-size:14px;white-space:nowrap;transition:.15s;
  list-style:none;-webkit-appearance:none;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}
.cf-tab::-webkit-details-marker{display:none}
.cf-tab::marker{content:""}
.cf-tab .cf-t{max-width:8em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cf-tab:active{background:#eef2f7}
.cf-tab.on{background:var(--brand-soft);border-color:#bfdbfe;color:var(--brand-dark);font-weight:600}
.cf-caret{width:0;height:0;flex:none;margin-top:4px;border:5px solid transparent;border-top-color:#9aa3af;transition:transform .18s}
.cf-dim[open] .cf-caret{transform:rotate(180deg);border-top-color:var(--brand)}
.cf-clear{flex:none;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);
  background:#fff;color:var(--muted);border-radius:10px;padding:9px 12px;font-size:13px;white-space:nowrap}
.cf-clear:hover{border-color:var(--price);color:var(--price)}
/* 面板浮层：定位到 .catfilter 底部，且不受 .cf-dims 横向滚动裁剪 */
.cf-panel{position:absolute;left:0;right:0;top:100%;margin-top:6px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  box-shadow:0 14px 30px rgba(16,24,40,.13);padding:12px;
  max-height:56vh;overflow-y:auto;-webkit-overflow-scrolling:touch;z-index:40}
.cf-inner{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- 列表页内联搜索 ---------- */
.searchinline{display:flex;gap:8px;margin:16px 0 0}
.searchinline .input{flex:1;margin:0}
.searchinline .btn{flex:none}

/* ---------- 卡片 ---------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(222px,1fr));gap:16px;margin-bottom:26px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.18s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#d7dbe3}
.card .cover{aspect-ratio:3/4;background:#f1f3f6;position:relative;overflow:hidden}
.card .cover img{width:100%;height:100%;object-fit:cover}
.card .cover .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:#9aa3af;font-size:13px;flex-direction:column;gap:6px}
.card .cover .ph .big{font-size:30px}
.badge{position:absolute;left:10px;top:10px;background:rgba(0,0,0,.55);color:#fff;font-size:12px;padding:3px 9px;border-radius:6px;backdrop-filter:blur(4px)}
.card .body{padding:12px 13px 14px;display:flex;flex-direction:column;gap:8px;flex:1}
.card .title{font-size:14.5px;font-weight:600;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:44px}
.card .meta{display:flex;justify-content:space-between;align-items:center}
.price{color:var(--price);font-weight:700;font-size:17px}
.price small{font-size:12px;font-weight:500}
.price del{color:#9ca3af;font-size:12px;font-weight:400;margin-left:5px}
.sales{color:var(--muted);font-size:12.5px}

/* ---------- 区块标题 ---------- */
.sec{display:flex;align-items:baseline;justify-content:space-between;margin:26px 0 14px}
.sec h2{margin:0;font-size:19px;font-weight:700}
.sec .more{color:var(--muted);font-size:13px}

/* ---------- 详情 ---------- */
.detail{display:grid;grid-template-columns:340px 1fr;gap:26px;margin:22px 0}
.detail .coverbox{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.detail .coverbox img{width:100%;aspect-ratio:3/4;object-fit:cover}
.detail .coverbox .nopage{padding:70px 0;text-align:center;color:var(--muted)}
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:16px;box-shadow:var(--shadow)}
.panel h3{margin:0 0 12px;font-size:16px;display:flex;align-items:center;gap:8px}
.panel h3:before{content:"";width:4px;height:15px;border-radius:2px;background:var(--brand)}
.dtitle{font-size:23px;font-weight:700;margin:0 0 8px;line-height:1.45}
.dsub{color:var(--muted);margin-bottom:14px}
.tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.tag{background:var(--brand-soft);color:var(--brand-dark);font-size:12.5px;padding:4px 11px;border-radius:7px}
.pricebox{background:linear-gradient(135deg,#fff1f2,#ffe4e6);border:1px solid #fecdd3;border-radius:var(--radius);padding:16px 18px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.pricebox .now{color:var(--price);font-size:30px;font-weight:800;line-height:1}
.pricebox .now small{font-size:15px}
.pricebox .old{color:#9ca3af;text-decoration:line-through;font-size:14px;margin-left:8px}
.info-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-top:6px}
.info-list div{background:#f8fafc;border-radius:10px;padding:9px 12px;font-size:13px;color:#475569}
.info-list b{display:block;color:var(--muted);font-weight:400;font-size:12px;margin-bottom:2px}

/* ---------- 预览 ---------- */
.preview-wrap{background:#f8fafc;border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-align:center}
.preview-pages{display:flex;flex-direction:column;gap:14px;align-items:center}
.preview-pages img{max-width:100%;border-radius:8px;box-shadow:0 2px 12px rgba(0,0,0,.08);background:#fff}
.preview-mask{position:relative}
.preview-mask:after{content:"";position:absolute;left:0;right:0;bottom:0;height:38%;
  background:linear-gradient(to bottom,rgba(248,250,252,0),rgba(248,250,252,.97));pointer-events:none}
.locked{text-align:center;padding:26px 14px;color:var(--muted)}
.locked .ico{font-size:34px;margin-bottom:8px}
#pdfCanvas{max-width:100%;border-radius:8px;box-shadow:0 2px 12px rgba(0,0,0,.08);background:#fff}
.pdfbar{display:flex;gap:8px;align-items:center;justify-content:center;margin-top:12px;flex-wrap:wrap}
.pdfbar button{border:1px solid var(--line);background:#fff;border-radius:8px;padding:6px 14px;cursor:pointer}
.pdfbar button:disabled{opacity:.45;cursor:not-allowed}

/* ---------- 支付 ---------- */
.paybox{max-width:520px;margin:40px auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;text-align:center;box-shadow:var(--shadow)}
.qr{width:230px;height:230px;margin:16px auto;padding:10px;background:#fff;border:1px solid var(--line);border-radius:12px}
.qr img,.qr canvas{width:100%;height:100%}
.steps{display:flex;justify-content:center;gap:26px;margin:14px 0 4px;color:var(--muted);font-size:13px}
.steps span.on{color:var(--brand);font-weight:600}

/* ---------- 页脚 ---------- */
.footer{background:#fff;border-top:1px solid var(--line);margin-top:40px;padding:26px 0 20px;color:var(--muted);font-size:13px}
.footer .links{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:10px}
.footer .links a:hover{color:var(--brand)}
.footer .icp{text-align:center;line-height:2}
.footer .icp a{color:var(--muted)}
.footer .icp img{width:14px;height:14px;vertical-align:-2px;margin-right:3px}

/* ---------- 表单 ---------- */
.field{margin-bottom:14px}
.field label{display:block;font-size:13.5px;color:#374151;margin-bottom:6px;font-weight:500}
.input,select.input,textarea.input{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:#fff;outline:0;transition:.15s}
.input:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(37,99,235,.12)}
textarea.input{min-height:110px;resize:vertical}
.hint{font-size:12.5px;color:var(--muted);margin-top:5px}

/* ---------- 提示 ---------- */
.alert{padding:11px 14px;border-radius:10px;font-size:14px;margin-bottom:14px}
.alert.err{background:#fef2f2;color:#b91c1c;border:1px solid #fecaca}
.alert.ok{background:#f0fdf4;color:#15803d;border:1px solid #bbf7d0}
.alert.info{background:#eff6ff;color:#1d4ed8;border:1px solid #bfdbfe}
.alert.warn{background:#fffbeb;color:#b45309;border:1px solid #fde68a}

/* ---------- 分页 ---------- */
.pager{display:flex;gap:6px;justify-content:center;margin:24px 0;flex-wrap:wrap}
.pager a{padding:7px 13px;border:1px solid var(--line);border-radius:9px;background:#fff;font-size:14px}
.pager a.active{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- 空态 ---------- */
.empty{text-align:center;padding:60px 20px;color:var(--muted)}
.empty .ico{font-size:44px;margin-bottom:10px;opacity:.55}

/* ---------- 后台 ---------- */
.admin-wrap{display:grid;grid-template-columns:210px 1fr;min-height:100vh}
.sidebar{background:#0f172a;color:#cbd5e1;padding:16px 0}
.sidebar .brand{color:#fff;font-weight:700;padding:6px 18px 18px;font-size:16px}
.sidebar a{display:block;padding:10px 18px;color:#cbd5e1;font-size:14px;border-left:3px solid transparent}
.sidebar a:hover{background:#1e293b;color:#fff}
.sidebar a.on{background:#1e293b;color:#fff;border-left-color:var(--brand)}
.sidebar .grp{font-size:11.5px;color:#64748b;padding:16px 18px 6px;letter-spacing:1px}
.main{background:var(--bg);padding:20px 24px;min-width:0}
.main h1{font-size:20px;margin:0 0 16px}
.cardp{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;margin-bottom:16px}
.cardp h3{margin:0 0 14px;font-size:15px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-bottom:16px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.stat .n{font-size:24px;font-weight:800}
.stat .l{color:var(--muted);font-size:13px}
table.tb{width:100%;border-collapse:collapse;font-size:14px}
table.tb th,table.tb td{padding:10px 11px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}
table.tb th{background:#f8fafc;color:#475569;font-weight:600;font-size:13px}
table.tb tr:hover td{background:#fafbfc}
table.tb img.thumb{width:44px;height:44px;object-fit:cover;border-radius:8px}
.tablewrap{overflow-x:auto}
.pill{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px}
.pill.g{background:#dcfce7;color:#166534}
.pill.r{background:#fee2e2;color:#991b1b}
.pill.y{background:#fef3c7;color:#92400e}
.pill.b{background:#dbeafe;color:#1e40af}
.pill.n{background:#f1f5f9;color:#475569}
.rowbtns{display:flex;gap:6px;flex-wrap:wrap}
.rowbtns .btn{padding:5px 11px;font-size:13px}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:14px}
.toolbar .input{width:auto;min-width:180px}
.topactions{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;gap:12px;flex-wrap:wrap}
.sortable{cursor:move}
.nowrap{white-space:nowrap}

/* ---------- 移动端底部导航 ---------- */
.tabbar{display:none}

/* ---------- 响应式 ---------- */
@media(max-width:900px){
  .detail{grid-template-columns:1fr}
  .searchinline{margin-top:14px}
  .admin-wrap{grid-template-columns:1fr}
  .sidebar{display:flex;overflow-x:auto;padding:6px}
  .sidebar .brand{display:none}
  .sidebar a{padding:8px 14px;white-space:nowrap;border-left:0;border-bottom:2px solid transparent}
  .sidebar a.on{border-bottom-color:var(--brand)}
  .sidebar .grp{display:none}
}
@media(max-width:600px){
  /* 容器与栅格 */
  .container{padding:0 12px}
  .grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .card .body{padding:9px 10px}
  .card .title{font-size:13.5px;min-height:0}
  .price{font-size:16px}
  .sales{font-size:12px}
  .sec h2{font-size:16px}
  .sec{margin:18px 0 10px}

  /* 顶栏：精简为可横滑 */
  .topbar .container{height:52px;gap:10px}
  .logo{font-size:16px;gap:7px;flex:none}
  .logo .dot{width:24px;height:24px;font-size:13px;border-radius:7px}
  .topbar .right{display:none}
  .nav{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .nav::-webkit-scrollbar{display:none}
  .nav a{padding:6px 10px;font-size:13.5px;white-space:nowrap}

  /* 首屏 */
  .hero{padding:24px 0 28px}
  .hero h1{font-size:21px;margin-bottom:6px}
  .hero p{font-size:13px;margin-bottom:14px}
  .searchbar{padding:5px;gap:6px}
  .searchbar input{padding:9px 10px;font-size:14px}
  .searchbar button{padding:9px 16px;font-size:14px}

  /* 下拉筛选 */
  .catfilter{margin:12px 0}
  .cf-dims{padding:9px 8px;gap:6px}
  .cf-tab{padding:10px 6px;font-size:13.5px}
  .cf-tab .cf-t{max-width:6em}
  .cf-inner .chip{padding:8px 14px;font-size:13.5px;min-height:34px;display:inline-flex;align-items:center}
  .cf-panel{max-height:52vh;padding:12px 10px}
  .searchinline{margin-top:12px}

  /* 底部导航 */
  body{padding-bottom:calc(54px + env(safe-area-inset-bottom))}
  .tabbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:60;background:rgba(255,255,255,.97);
    backdrop-filter:saturate(1.4) blur(6px);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);
    box-shadow:0 -2px 12px rgba(16,24,40,.05)}
  .tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
    padding:7px 0 6px;font-size:11px;color:var(--muted)}
  .tabbar a.on{color:var(--brand)}
  .tabbar .ico{font-size:19px;line-height:1.1}

  /* 其它 */
  .empty{padding:44px 16px}
  .pager a{padding:6px 11px}
  .toolbar{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .toolbar::-webkit-scrollbar{display:none}
  .toolbar .chip{flex:none}
  .topactions{gap:8px}
}