:root{
  --brand:#06B6C9; --brand-deep:#0891A5; --brand-light:#E6F8FA;
  --bg:#F4F6F8; --card:#FFFFFF; --text:#1B1F23; --muted:#8A929B;
  --line:#E9EDF0; --blue:#1E9BE0; --orange:#F4501E; --danger:#D9483B;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
body{margin:0;background:#EDF0F3;color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:14px;line-height:1.6}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,select,textarea{font-family:inherit}

/* ---------- top demo toolbar ---------- */
.proto-bar{background:#fff;border-bottom:1px solid var(--line);padding:10px 20px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;position:sticky;top:0;z-index:40}
.proto-title{font-size:15px;font-weight:600;white-space:nowrap}
.proto-title span{font-size:12px;font-weight:400;color:var(--muted);margin-left:8px}
.proto-tabs{display:flex;gap:6px;flex-wrap:wrap}
.proto-tabs button{padding:7px 13px;border-radius:8px;font-size:13px;color:#5A636C;border:1px solid var(--line);background:#fff}
.proto-tabs button.active{background:var(--brand);color:#fff;border-color:var(--brand)}
.tool-right{display:flex;align-items:center;gap:8px;margin-left:auto;flex-wrap:wrap;font-size:12px;color:var(--muted)}
.tool-right select{border:1px solid #DDE3E8;border-radius:7px;padding:6px 8px;font-size:12px;background:#fff;color:var(--text);max-width:210px}
.tbtn{border:1px solid var(--line);border-radius:7px;padding:6px 10px;font-size:12px;background:#fff;color:#5A636C}
.tbtn:hover{border-color:var(--brand);color:var(--brand-deep)}
.stage{padding:16px 16px 40px;display:flex;justify-content:center}
.view{display:none;width:100%;justify-content:center}
.view.active{display:flex}

/* ---------- phone frame ---------- */
.phone{width:390px;max-width:100%;background:var(--bg);border-radius:22px;overflow:hidden;border:1px solid #DDE3E8;height:780px;display:flex;flex-direction:column;box-shadow:0 8px 30px rgba(20,40,50,.06)}
.statusbar{height:34px;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 16px;font-size:12px;font-weight:600;color:#111;flex:none}
.statusbar .wx{font-size:12px;color:#111;font-weight:400}
.battery{background:#0AB35B;color:#fff;border-radius:4px;padding:1px 5px;font-size:10px}
.navbar{height:46px;background:#fff;display:flex;align-items:center;padding:0 14px;gap:10px;border-bottom:1px solid #F0F2F4;flex:none}
.navbar .navtitle{flex:1;text-align:center;font-size:16px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.iconbtn{width:30px;height:30px;display:flex;align-items:center;justify-content:center;color:#222}
.iconbtn svg{width:20px;height:20px}
.scrollbody{flex:1;overflow-y:auto;padding-bottom:24px}

/* ---------- reader: book page ---------- */
.bookhead{background:#F7F9FB;padding:16px;display:flex;gap:14px}
.cover{width:92px;height:128px;flex:none;border-radius:5px;position:relative;overflow:hidden;color:#fff;padding:9px 8px;box-shadow:0 2px 6px rgba(0,0,0,.12)}
.cover:before{content:"";position:absolute;right:-24px;bottom:-24px;width:80px;height:80px;border-radius:50%;background:rgba(255,255,255,.12)}
.cover .badge{position:absolute;top:0;right:0;background:#FFD400;color:#8A3B00;font-size:9px;padding:2px 5px;border-radius:0 0 0 6px;font-weight:700}
.cover .ct,.cover .cn,.cover .cs,.cover .lines{position:relative;z-index:1}
.cover .ct{font-size:12px;font-weight:800;line-height:1.25}
.cover .cn{font-size:21px;font-weight:900;line-height:1.1;margin:6px 0 4px;letter-spacing:1px}
.cover .cs{font-size:9px;opacity:.95}
.cover .lines{margin-top:7px;display:flex;flex-direction:column;gap:3px}
.cover .lines i{display:block;height:2px;background:rgba(255,255,255,.65);width:60px}
.cover .lines i:nth-child(2){width:48px}.cover .lines i:nth-child(3){width:54px}
.cover-img{width:92px;height:128px;flex:none;border-radius:5px;object-fit:cover;box-shadow:0 2px 6px rgba(0,0,0,.12);background:#fff}
.bookmeta{flex:1;min-width:0;padding-top:4px}
.bookmeta h1{font-size:16px;line-height:1.45;margin:0 0 6px;font-weight:600}
.bookmeta .pub{font-size:13px;color:#6B747D;margin:0 0 10px}
.introbtn{display:inline-flex;align-items:center;gap:2px;font-size:12px;color:#7A4B12;background:#FFE2A8;border-radius:12px;padding:3px 10px;cursor:pointer}
.isbnline{font-size:11px;color:var(--muted);margin-top:8px}
.tabs{display:flex;background:#EDF1F4;height:46px}
.tabs button{flex:1;font-size:15px;color:#9AA2AA;position:relative}
.tabs button.active{color:var(--text);font-weight:600;background:#fff;border-radius:14px 22px 0 0}
.tabs button.active:after{content:"";position:absolute;bottom:9px;left:50%;transform:translateX(-50%);width:22px;height:3px;background:var(--brand);border-radius:2px}
.tabs button.disabled{color:#B9C0C7}
.tabs.single button{flex:0 0 112px}
.catalog{padding:12px 12px 20px}
.group{background:#fff;border-radius:12px;margin-bottom:10px;overflow:hidden}
.group-hd{display:flex;align-items:center;gap:10px;padding:15px 14px;font-size:15px;font-weight:600;cursor:pointer}
.group-hd .gicon{width:20px;height:20px;border-radius:5px;background:var(--brand);flex:none;display:flex;align-items:center;justify-content:center}
.group-hd .gicon svg{width:12px;height:12px}
.group-hd .gname{flex:1}
.group-hd .gcount{font-size:11px;color:var(--muted);font-weight:400}
.group-hd .chev{color:#9AA2AA;transition:transform .2s}
.group.open .group-hd .chev{transform:rotate(180deg)}
.group-bd{display:none;padding:0 14px 8px}
.group.open .group-bd{display:block}
.lesson{display:flex;align-items:center;gap:10px;padding:12px 2px;border-top:1px solid #F2F4F6;font-size:14px;cursor:pointer}
.lesson:hover .lt{color:var(--brand-deep)}
.lesson .dot{width:10px;height:10px;border:1.5px solid var(--brand);border-radius:50%;flex:none}
.lesson .lt{flex:1;color:#3A424A;line-height:1.4}
.lesson .arw{color:var(--brand);font-size:17px;line-height:1}
.lesson .kind{font-size:10px;color:var(--brand-deep);background:var(--brand-light);padding:1px 5px;border-radius:4px;flex:none}
.empty{padding:26px 16px;text-align:center;color:var(--muted);font-size:13px}

/* ---------- reader: player page ---------- */
.player{width:100%;aspect-ratio:16/9;background:#111;position:relative;overflow:hidden}
.player video{width:100%;height:100%;object-fit:contain;background:#000;display:block}
.player audio{width:100%;position:absolute;bottom:0;left:0}
.doc{position:absolute;inset:0;background:#FDFDFB;padding:14px 16px;color:#333;font-size:9px;line-height:1.5}
.doc .logo{font-size:11px;color:var(--orange);font-weight:800;margin-bottom:6px}
.doc .dh{font-size:10px;font-weight:700;margin-bottom:5px;border-bottom:1px solid #DDD;padding-bottom:3px}
.doc .row{display:flex;gap:6px;margin-bottom:3px}
.doc .row b{color:var(--brand-deep);flex:none;font-size:9px}
.doc .row span{color:#555;font-size:9px}
.pip{position:absolute;right:8px;bottom:38px;width:56px;height:44px;background:#3B4A52;border:2px solid #fff;border-radius:3px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px;pointer-events:none}
.playmask{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.18)}
.playmask .pbtn{width:52px;height:52px;border-radius:50%;background:rgba(0,0,0,.55);display:flex;align-items:center;justify-content:center}
.playmask .pbtn svg{width:22px;height:22px;fill:#fff;margin-left:3px}
.playctrl{position:absolute;left:0;right:0;bottom:0;height:28px;background:rgba(0,0,0,.6);display:flex;align-items:center;gap:8px;padding:0 10px;color:#fff;font-size:10px}
.audioplayer{width:100%;aspect-ratio:16/9;background:linear-gradient(140deg,#0E7C8C,#06B6C9);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;color:#fff;position:relative}
.audioplayer .disc{width:76px;height:76px;border-radius:50%;background:rgba(255,255,255,.16);border:2px solid rgba(255,255,255,.5);display:flex;align-items:center;justify-content:center;font-size:12px;letter-spacing:1px}
.audioplayer .an{font-size:13px;padding:0 20px;text-align:center}
.wave{display:flex;gap:3px;align-items:flex-end;height:22px}
.wave i{width:3px;background:rgba(255,255,255,.85);border-radius:2px;display:block}
.media-note{background:#FFF8E8;color:#7A5B12;font-size:11px;padding:8px 12px;line-height:1.6}
.detail-tabs{display:flex;background:#fff;border-bottom:1px solid var(--line);height:44px}
.detail-tabs button{padding:0 18px;font-size:15px;color:#7A828B;position:relative}
.detail-tabs button.active{color:var(--text);font-weight:600}
.detail-tabs button.active:after{content:"";position:absolute;bottom:0;left:18px;right:18px;height:3px;background:var(--blue);border-radius:2px}
.detail-body{background:#fff;padding:16px}
.detail-body h2{font-size:19px;margin:0 0 8px;font-weight:600;line-height:1.4}
.meta{display:flex;gap:16px;color:var(--muted);font-size:12px;margin-bottom:18px;flex-wrap:wrap}
.sec-title{font-size:16px;font-weight:600;margin:4px 0 12px}
.keypoints{background:#F7FAFB;border-radius:8px;padding:12px;font-size:13px;color:#4A545C;margin-bottom:18px}
.keypoints li{margin:4px 0}
.rel{display:flex;gap:12px;padding:12px 0;border-top:1px solid #F2F4F6;align-items:flex-start;cursor:pointer}
.rel .thumb{width:76px;height:54px;border-radius:5px;flex:none;color:#fff;font-size:8px;padding:5px;overflow:hidden;line-height:1.3;font-weight:700;background:#3A7A8C}
.rel .rinfo{flex:1;min-width:0}
.rel .rt{font-size:14px;line-height:1.35;margin-bottom:6px;color:#2A3138}
.rel.cur .rt{color:var(--blue);font-weight:600}
.rel .rm{display:flex;gap:12px;color:var(--muted);font-size:11px;flex-wrap:wrap}

/* ---------- scan simulator ---------- */
.scan-page{width:100%;max-width:none;background:#fff;border:1px solid #DDE3E8;border-radius:14px;padding:26px}
.scan-head h2{font-size:20px;margin:0 0 6px}
.scan-head p{color:var(--muted);font-size:13px;margin:0 0 18px}
.domain-set{display:flex;align-items:center;gap:8px;flex-wrap:wrap;background:#F7FAFB;border:1px solid var(--line);border-radius:9px;padding:12px 14px;margin-bottom:22px;font-size:13px}
.domain-set input{border:1px solid #DDE3E8;border-radius:7px;padding:8px 10px;font-size:13px;width:280px;max-width:100%}
.scan-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.scan-card{border:1px solid var(--line);border-radius:12px;padding:16px;display:flex;gap:14px;transition:border-color .15s,box-shadow .15s}
.scan-card:hover{border-color:var(--brand);box-shadow:0 4px 16px rgba(6,182,201,.10)}
.scan-card .qr{width:104px;height:104px;flex:none;border:1px solid var(--line);border-radius:8px;background:#fff;padding:5px}
.scan-card .info{flex:1;min-width:0}
.scan-card .ct{font-size:14px;font-weight:600;line-height:1.4;margin-bottom:5px}
.scan-card .ci{font-size:11px;color:var(--muted);line-height:1.7;word-break:break-all}
.scan-card .cbtn{margin-top:10px;display:flex;gap:8px;flex-wrap:wrap}
.scan-note{margin-top:20px;font-size:12px;color:var(--muted);line-height:1.9;background:#FFF8E8;border:1px solid #F3E2B8;color:#7A5B12;border-radius:8px;padding:12px 14px}
.qr-label{font-size:10px;color:var(--muted);text-align:center;margin-top:3px}

/* ---------- admin ---------- */
.admin{width:100%;max-width:none;flex:1 1 100%;background:#fff;border-radius:14px;border:1px solid #DDE3E8;overflow:hidden;display:flex;min-height:max(760px,calc(100vh - 120px))}
.side{width:212px;background:#1F2A33;color:#C7D0D8;flex:none;padding:20px 0}
.side .brand{padding:0 20px 20px;color:#fff;font-size:15px;font-weight:600;border-bottom:1px solid rgba(255,255,255,.08)}
.side .brand small{display:block;color:#8B9AA6;font-size:11px;font-weight:400;margin-top:3px}
.side button{display:block;width:100%;text-align:left;padding:12px 20px;font-size:13px;color:#AEBAC4}
.side button.active{background:rgba(6,182,201,.16);color:#5FE0EC;border-left:3px solid var(--brand)}
.amain{flex:1;min-width:0;background:#F7F9FB}
.atop{height:56px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 22px;justify-content:space-between;gap:12px}
.atop .who{font-size:12px;color:#5A636C;text-align:right}
.acontent{padding:22px}
.acontent h3{font-size:18px;margin:0 0 4px}
.acontent .sub{color:var(--muted);font-size:12px;margin-bottom:18px}
.panel{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px;margin-bottom:16px}
.panel h4{font-size:14px;margin:0 0 14px;font-weight:600}
.phead{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;gap:10px;flex-wrap:wrap}
.phead h4{margin:0}
table{width:100%;border-collapse:collapse;font-size:13px}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid #F0F2F4;vertical-align:middle}
th{color:var(--muted);font-weight:500;font-size:12px}
tr.sel td{background:#F0FBFC}
/* 书目列表：固定视窗高度，默认露出 5 行，表头吸顶 */
.table-scroll{max-height:336px;overflow-y:auto;border:1px solid var(--line);border-radius:8px}
.table-scroll::-webkit-scrollbar{width:8px}
.table-scroll::-webkit-scrollbar-thumb{background:#CFD8DE;border-radius:4px}
.table-scroll th{position:sticky;top:0;z-index:2;background:#fff;box-shadow:0 1px 0 var(--line)}
.table-scroll tr.bookrow{cursor:pointer}
.table-scroll tr.bookrow:hover td{background:#F6FCFD}
.table-scroll tr.sel td{background:#F0FBFC}
.table-scroll tr.sel td:first-child{box-shadow:inset 3px 0 0 var(--brand)}
/* 封面上传 */
.cover-up{display:flex;gap:14px;align-items:flex-start}
.cover-prev{flex:none}
.cover-prev .mini-cover{width:46px;height:62px;font-size:8px;line-height:1.3;border:1px solid var(--line)}
.cover-up-main{flex:1;min-width:0}
.cover-up-main .hint{margin-top:7px;line-height:1.7}
.field input[type=file]{padding:7px;font-size:12px;border:1px dashed #DDE3E8;background:#FAFCFD}
.mini-cover{width:30px;height:40px;border-radius:3px;color:#fff;font-size:6px;padding:3px;line-height:1.2;overflow:hidden}
.tag{display:inline-block;font-size:11px;padding:2px 8px;border-radius:10px;background:var(--brand-light);color:var(--brand-deep)}
.auto{display:inline-block;font-size:10px;padding:1px 6px;border-radius:4px;background:#EAF6FF;color:#1B74B8;margin-left:5px}
.linkbtn{color:var(--blue);font-size:12px;padding:2px 4px;white-space:nowrap}
.linkbtn.red{color:var(--danger)}
.btn{background:var(--brand);color:#fff;border-radius:7px;padding:9px 16px;font-size:13px}
.btn.ghost{background:#fff;color:var(--brand-deep);border:1px solid #BEE8EC}
.btn.sm{padding:6px 11px;font-size:12px}
.btn.danger{background:#fff;color:var(--danger);border:1px solid #F1C9C4}
.field{margin-bottom:14px}
.field label{display:block;font-size:12px;color:#5A636C;margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;border:1px solid #DDE3E8;border-radius:7px;padding:9px 10px;font-size:13px;background:#fff;color:var(--text)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.drop{border:1.5px dashed #C9D3DA;border-radius:9px;padding:20px;text-align:center;color:var(--muted);font-size:13px;background:#FAFCFD;cursor:pointer}
.drop b{color:var(--brand-deep)}
.drop.over{border-color:var(--brand);background:var(--brand-light)}
.qrwrap{display:flex;gap:22px;align-items:center;flex-wrap:wrap}
.qrbox{width:170px;height:170px;border:1px solid var(--line);border-radius:8px;padding:8px;background:#fff;display:flex;align-items:center;justify-content:center;flex:none;flex-direction:column}
.qrinfo{flex:1;min-width:250px}
.qrinfo .url{background:#F5F7F9;border:1px solid var(--line);border-radius:7px;padding:9px 10px;font-size:12px;color:#3A424A;word-break:break-all;margin-bottom:10px;font-family:Consolas,Monaco,monospace}
.qrinfo .lbl{font-size:11px;color:var(--muted);margin:10px 0 4px}
.tip{background:#FFF8E8;border:1px solid #F3E2B8;color:#7A5B12;border-radius:8px;padding:10px 12px;font-size:12px;line-height:1.7;margin-top:12px}
.isolate{background:#EEF7F8;border:1px solid #C6E6EA;border-radius:9px;padding:12px 14px;font-size:12px;color:#0F6E56;line-height:1.8}
.ccard{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid #F0F2F4;flex-wrap:wrap}
.ccard .cav{width:38px;height:38px;border-radius:8px;background:var(--brand-light);color:var(--brand-deep);display:flex;align-items:center;justify-content:center;font-weight:600;flex:none}
.ccard .cmeta{flex:1;min-width:160px}
.ccard .cstat{font-size:12px;color:var(--muted)}
.booksel{display:flex;align-items:center;gap:10px;font-size:13px;flex-wrap:wrap}
.booksel select{flex:1;max-width:460px;padding:9px 10px;font-size:13px;border:1px solid #DDE3E8;border-radius:7px;background:#fff}
.newform{display:none;background:#FAFCFD;border:1px solid #D7E9EC;border-radius:9px;padding:16px;margin-bottom:16px}
.newform.show{display:block}
.pc-input{width:96px;border:1px solid #DDE3E8;border-radius:6px;padding:5px 7px;font-size:12px}
.hint{font-size:11px;color:var(--muted)}
.tree-row{display:flex;align-items:center;gap:8px;padding:7px 8px;border-bottom:1px solid #F2F4F6;font-size:13px}
.tree-row:hover{background:#FAFCFD}
.tree-row .tname{flex:1;min-width:0}
.tree-row .tname input{width:100%;border:1px solid transparent;border-radius:5px;padding:4px 6px;font-size:13px;background:transparent}
.tree-row .tname input:hover,.tree-row .tname input:focus{border-color:#DDE3E8;background:#fff;outline:none}
.tree-row .badge2{font-size:10px;padding:1px 6px;border-radius:4px;background:#EEF3F6;color:#5A636C;flex:none}
.tree-row .badge2.lesson{background:var(--brand-light);color:var(--brand-deep)}
.tree-add{display:flex;gap:8px;align-items:center;margin-top:10px;flex-wrap:wrap}
.tree-add input{border:1px solid #DDE3E8;border-radius:7px;padding:8px 10px;font-size:13px;min-width:180px;flex:1}

/* ---------- 素材管理：左侧章节侧栏（一级目录） + 右侧课程行（二级目录） ---------- */
.mat-layout{display:flex;gap:16px;align-items:flex-start}
.mat-side{width:260px;flex:none;background:#fff;border:1px solid var(--line);border-radius:10px;display:flex;flex-direction:column;min-height:300px;overflow:hidden}
.mat-side-head{display:flex;align-items:center;gap:8px;padding:13px 14px;background:#F3FAFB;border-bottom:1px solid var(--line);font-size:13px;font-weight:600;color:#2A3941}
.mat-side-head .tri{color:var(--brand);font-size:11px}
.mat-side-head .side-book{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mat-side-head .num{color:var(--muted);font-weight:400;font-size:12px}
.mat-chapters{flex:1;overflow-y:auto;padding:8px 0}
.mat-chapter{display:flex;align-items:center;gap:8px;padding:10px 16px 10px 28px;font-size:13px;color:#3A424A;cursor:pointer;border-left:3px solid transparent;transition:background .12s}
.mat-chapter:hover{background:#F7FCFD}
.mat-chapter.sel{background:#EAF8FA;border-left-color:var(--brand);color:var(--brand-deep);font-weight:600}
.mat-chapter .cname{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mat-chapter .num{color:#9AA2AA;font-size:12px;font-weight:400;margin-left:auto}
.mat-side-foot{padding:12px;border-top:1px solid var(--line);background:#FCFDFE}
.mat-main{flex:1;min-width:0;background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px}
.mat-head-ops{display:flex;align-items:center;gap:10px;flex-wrap:nowrap;white-space:nowrap}
/* 列头与课程行共用同一套栅格，列宽固定一致；操作区恒为单行、不折行 */
.mat-colhead,.mat-row{display:grid;grid-template-columns:72px minmax(0,1fr) 88px 288px;gap:14px;align-items:center}
.mat-colhead{padding:10px 8px;font-size:11px;color:var(--muted);border-bottom:1px solid var(--line);background:#FAFCFD;border-radius:6px 6px 0 0}
.mat-colhead span:nth-child(3),.mat-colhead span:nth-child(4){text-align:right}
.mat-row{padding:10px 8px;border-bottom:1px solid #F2F4F6}
.mat-row:hover{background:#FBFEFF}
.mat-thumb{width:72px;height:48px;flex:none;border-radius:6px;overflow:hidden;position:relative;background:linear-gradient(135deg,#0E7C8C,#06B6C9);cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff}
.mat-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.mat-thumb .ph{font-size:20px;opacity:.9}
.mat-thumb .playbadge{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.18);font-size:15px;color:#fff}
.mat-info{flex:1;min-width:0}
.mat-title{width:100%;border:1px solid transparent;border-radius:6px;padding:4px 6px;font-size:13px;font-weight:600;color:#2A3138;background:transparent}
.mat-title:hover,.mat-title:focus{border-color:#DDE3E8;background:#fff;outline:none}
.mat-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:11px;color:var(--muted);margin-top:4px}
.mat-meta .tag{font-size:10px;padding:1px 6px}
.mat-meta .fname{max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mat-size{width:88px;flex:none;text-align:right;font-size:12px;color:#3A424A;line-height:1.4}
.mat-size .hint{font-size:10px}
.mat-ops{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex-wrap:nowrap;white-space:nowrap}
.mat-links{display:flex;align-items:center;gap:8px;flex-wrap:nowrap;justify-content:flex-end;white-space:nowrap}
.up-slot:empty{display:none}
.mat-empty{padding:34px 14px;text-align:center;color:var(--muted);font-size:13px;line-height:1.9}
.modal-box.wide{width:660px}
/* 窄屏（<1180px）：操作区整体移到下一行，按钮仍保持单行、不会被挤断 */
@media(max-width:1180px){
  .mat-colhead,.mat-row{grid-template-columns:72px minmax(0,1fr) 88px}
  .mat-colhead span:nth-child(4){display:none}
  .mat-ops{grid-column:1/-1;justify-content:flex-start;padding-top:2px}
}
@media(max-width:980px){
  .mat-layout{flex-direction:column}
  .mat-side{width:100%;min-height:0}
  .mat-chapters{max-height:190px}
}
.pill{display:inline-block;font-size:11px;padding:2px 8px;border-radius:10px;background:#EEF3F6;color:#5A636C}
.pill.on{background:#E6F8FA;color:var(--brand-deep)}
.color-dot{width:16px;height:16px;border-radius:4px;display:inline-block;vertical-align:middle;margin-right:6px;border:1px solid rgba(0,0,0,.08)}

/* ---------- modal / toast ---------- */
.modal{position:fixed;inset:0;background:rgba(15,25,30,.45);display:none;align-items:center;justify-content:center;z-index:80;padding:20px}
.modal.show{display:flex}
.modal-box{background:#fff;border-radius:14px;width:420px;max-width:100%;padding:22px;box-shadow:0 20px 60px rgba(0,0,0,.2)}
.modal-box h3{margin:0 0 12px;font-size:17px}
.modal-box p{font-size:13px;color:#4A545C;line-height:1.8;margin:0 0 18px}
.modal-box .mclose{float:right;font-size:20px;color:var(--muted);line-height:1}
#toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:rgba(20,26,30,.92);color:#fff;padding:10px 18px;border-radius:20px;font-size:13px;display:none;z-index:99;max-width:88vw;white-space:normal;text-align:center;box-shadow:0 8px 24px rgba(0,0,0,.2)}

@media(max-width:760px){
  .tool-right{margin-left:0}
  .grid2{grid-template-columns:1fr}
  .admin{flex-direction:column}
  .side{width:100%;display:flex;flex-wrap:wrap;padding:8px}
  .side .brand{width:100%;padding:8px 12px;border:none}
  .side button{width:auto;padding:8px 12px}
  .side button.active{border-left:none;border-bottom:2px solid var(--brand)}
  .scan-page{padding:16px}
}

/* ============================================================
 * 生产版新增：登录层 / 身份标签 / 上传进度 / 读者页全屏模式
 * ============================================================ */
a.btn{display:inline-block;text-decoration:none;line-height:1.6;cursor:pointer}
a.btn:hover{opacity:.9}
.who-chip{display:inline-block;background:#EAF7FA;border:1px solid #BEE8EC;color:#0E7C91;border-radius:20px;padding:5px 12px;font-size:12px;font-weight:600;white-space:nowrap}
.up-slot{min-width:96px;text-align:right;font-size:11px;line-height:1.4}
.up-progress{display:inline-block;color:#0E7C91;background:#EAF7FA;border-radius:5px;padding:3px 7px}
.login-layer{position:fixed;inset:0;z-index:90;background:linear-gradient(135deg,#0E7C91 0%,#1BA6C4 55%,#EAF7FA 100%);display:none;align-items:center;justify-content:center;padding:20px}
.login-layer.show{display:flex}
body.login-open{overflow:hidden}
.login-card{width:380px;max-width:100%;background:#fff;border-radius:16px;padding:30px 30px 24px;box-shadow:0 24px 70px rgba(6,45,55,.28)}
.login-logo{font-size:19px;font-weight:700;color:#123;text-align:center}
.login-sub{font-size:13px;color:var(--muted);text-align:center;margin:6px 0 24px}
.login-error{min-height:20px;color:#D0463B;font-size:12px;margin-top:10px;text-align:center}
.login-foot{font-size:11px;color:var(--muted);text-align:center;margin-top:18px;line-height:1.7}
.login-card .btn{padding:11px 16px;font-size:14px}
.login-card .btn:disabled{opacity:.6;cursor:wait}

/* 读者扫码页：隐藏后台顶栏与假状态栏，手机框铺满视口 */
body.public-mode{background:#F4F6F8}
body.public-mode .proto-bar{display:none}
body.public-mode .stage{padding:0;min-height:100vh;display:block}
body.public-mode .view.active{display:block}
body.public-mode .phone{width:100%;max-width:480px;height:100vh;min-height:100vh;margin:0 auto;border:0;border-radius:0;box-shadow:none}
body.public-mode .statusbar{display:none}
body.public-mode .scrollbody{-webkit-overflow-scrolling:touch}
@media(max-width:480px){
  body.public-mode .phone{max-width:100%}
}
#site-domain[readonly]{background:#F6F8FA;color:#5A636C}