/* ISBN书号校验 · 图书馆书脊（独立设计系统：牛皮纸、墨绿烫金、衬线标题） */
.ib-page,.ib-modal,.ib-toast{
    --ib-bg:#f4efe3;--ib-card:#fffdf7;--ib-card2:#f8f3e7;--ib-ink:#2e2a21;--ib-ink2:#625b4b;--ib-ink3:#948b76;
    --ib-line:#ddd3bd;--ib-soft:#ebe3cf;--ib-green:#24503f;--ib-green2:#e2eee6;--ib-gold:#b08b3a;--ib-gold2:#f6eed7;
    --ib-red:#b14b3a;--ib-red2:#f7e7e1;
    --ib-shadow:0 12px 30px rgba(80,66,38,.13);--ib-shadow2:0 3px 12px rgba(80,66,38,.08);
    --ib-r:4px;--ib-serif:"Songti SC","STSong","SimSun",Georgia,serif;
    --ib-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
    --ib-mono:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;
    --ib-xs:12px;--ib-sm:13.5px;--ib-base:15px;--ib-md:17px;--ib-lg:21px;--ib-xl:25px;--ib-hero:35px;--ib-lh:1.8;
}
:root[data-theme="dark"] .ib-page,:root[data-theme="dark"] .ib-modal,:root[data-theme="dark"] .ib-toast{
    --ib-bg:#151913;--ib-card:#20271e;--ib-card2:#283125;--ib-ink:#eee8d8;--ib-ink2:#c0b7a0;--ib-ink3:#8d8672;
    --ib-line:#3b4534;--ib-soft:#2c3628;--ib-green:#7cc4a0;--ib-green2:#1d3a2c;--ib-gold:#d8b866;--ib-gold2:#3a3120;
    --ib-red:#ef9077;--ib-red2:#3b2620;
    --ib-shadow:0 14px 36px rgba(0,0,0,.46);--ib-shadow2:0 3px 14px rgba(0,0,0,.3);
}
.ib-page{min-height:60vh;padding:22px 16px 54px;color:var(--ib-ink);font:var(--ib-base)/var(--ib-lh) var(--ib-sans);
    background:var(--ib-bg);background-image:repeating-linear-gradient(90deg,transparent 0 60px,rgba(176,139,58,.045) 60px 61px),radial-gradient(circle at 88% 5%,rgba(36,80,63,.09),transparent 36%)}
.ib-page *,.ib-modal *{box-sizing:border-box}
.ib-wrap{max-width:1160px;margin:0 auto}
.ib-page h1,.ib-page h2,.ib-page h3,.ib-modal h3{font-family:var(--ib-serif);font-weight:700;line-height:1.4}
.ib-page b,.ib-page strong{color:var(--ib-green);font-weight:700}
.ib-page button,.ib-page input,.ib-page select,.ib-page textarea{font-family:inherit;font-size:inherit}
.ib-page .detail-breadcrumb{margin-bottom:16px}
/* 首屏 */
.ib-hero{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,.62fr);gap:26px;align-items:center;
    background:var(--ib-card);border:1px solid var(--ib-line);border-bottom:3px double var(--ib-gold);border-radius:var(--ib-r);box-shadow:var(--ib-shadow);padding:28px 32px;overflow:hidden}
.ib-kicker{display:inline-block;font:var(--ib-xs)/1.6 var(--ib-serif);letter-spacing:.14em;color:var(--ib-gold);border-bottom:1px solid var(--ib-gold);padding-bottom:3px;margin-bottom:13px}
.ib-hero h1{font-size:clamp(25px,3vw,var(--ib-hero));margin:0 0 12px}
.ib-sub{margin:0 0 20px;font-size:var(--ib-md);color:var(--ib-ink2);max-width:700px}
.ib-hero-metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--ib-line);border-bottom:1px solid var(--ib-line)}
.ib-metric{padding:9px 11px;border-right:1px solid var(--ib-soft);text-align:center;min-width:0}
.ib-metric:last-child{border-right:0}
.ib-metric b{display:block;font:700 var(--ib-xl)/1.25 var(--ib-serif);color:var(--ib-green)}
.ib-metric:nth-child(3) b{color:var(--ib-gold)}
.ib-metric span{font-size:var(--ib-xs);color:var(--ib-ink3)}
/* 书脊 */
.ib-shelf{text-align:center}
.ib-books{display:flex;align-items:flex-end;justify-content:center;gap:5px;height:158px;padding:0 8px}
.ib-book{width:34px;border-radius:2px 2px 0 0;box-shadow:inset -4px 0 8px rgba(0,0,0,.16),0 3px 8px rgba(0,0,0,.14);
    display:flex;align-items:center;justify-content:center;color:#f5ecd6;writing-mode:vertical-rl;font:700 11px/1.4 var(--ib-serif);letter-spacing:.08em;padding:9px 0;position:relative}
.ib-book::before{content:"";position:absolute;left:3px;right:3px;top:10px;height:2px;background:rgba(245,236,214,.55)}
.ib-book::after{content:"";position:absolute;left:3px;right:3px;bottom:10px;height:2px;background:rgba(245,236,214,.55)}
.ib-book--1{height:122px;background:#24503f}
.ib-book--2{height:148px;background:#7a4a32;width:40px}
.ib-book--3{height:112px;background:#3b5b73}
.ib-book--4{height:138px;background:#8b6b2e;width:30px}
.ib-book--5{height:126px;background:#5b3f5b}
.ib-shelf-board{height:9px;background:linear-gradient(180deg,#a8864f,#7d6237);border-radius:2px;box-shadow:0 5px 10px rgba(0,0,0,.2);margin:0 4px}
.ib-barcode{height:22px;margin:9px auto 0;max-width:170px;background:repeating-linear-gradient(90deg,var(--ib-ink) 0 2px,transparent 2px 4px,var(--ib-ink) 4px 5px,transparent 5px 9px,var(--ib-ink) 9px 12px,transparent 12px 14px);opacity:.72}
/* 口径 */
.ib-notice{display:flex;gap:12px;align-items:flex-start;background:var(--ib-gold2);border:1px solid var(--ib-line);border-left:4px solid var(--ib-gold);border-radius:var(--ib-r);padding:11px 15px;margin:14px 0 16px}
.ib-notice-tag{flex:none;font:var(--ib-xs)/1.8 var(--ib-serif);color:#fff;background:var(--ib-gold);border-radius:2px;padding:2px 8px}
.ib-notice p{margin:0;font-size:var(--ib-sm);color:var(--ib-ink2)}
/* 查询台 */
.ib-query{background:var(--ib-card);border:1px solid var(--ib-line);border-radius:var(--ib-r);box-shadow:var(--ib-shadow2);padding:19px 21px 16px;margin-bottom:16px}
.ib-query-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px;margin-bottom:13px}
.ib-query-head h2{margin:0;font-size:var(--ib-lg)}
.ib-query-head span{font-size:var(--ib-xs);color:var(--ib-ink3)}
.ib-input-row{display:flex;gap:10px}
.ib-input-box{flex:1;min-width:0;display:flex;align-items:center;gap:11px;border:1px solid var(--ib-line);border-left:4px solid var(--ib-green);background:var(--ib-card2);border-radius:var(--ib-r);padding:0 13px}
.ib-input-box>span{font:700 var(--ib-sm)/1 var(--ib-serif);letter-spacing:.1em;color:var(--ib-gold)}
.ib-input-box input{flex:1;min-width:0;height:50px;border:0;outline:0;background:transparent;color:var(--ib-ink);font:var(--ib-lg)/1.4 var(--ib-mono);letter-spacing:.05em}
.ib-input-box input::placeholder{color:var(--ib-ink3);font-size:var(--ib-base)}
.ib-btn{border:1px solid var(--ib-line);background:var(--ib-card2);color:var(--ib-ink);border-radius:3px;padding:0 15px;min-height:39px;cursor:pointer;font-weight:700;font-size:var(--ib-sm);transition:.16s;white-space:nowrap}
.ib-btn:hover{border-color:var(--ib-green);box-shadow:var(--ib-shadow2)}
.ib-btn--main{background:var(--ib-green);border-color:var(--ib-green);color:#fff;min-height:50px;padding:0 26px;font-size:var(--ib-base)}
.ib-btn--main:hover{background:#1a3d30}
.ib-quick{display:flex;flex-wrap:wrap;gap:7px;align-items:center;margin-top:13px}
.ib-quick>span{font-size:var(--ib-xs);color:var(--ib-ink3)}
.ib-quick button{border:1px solid var(--ib-line);background:var(--ib-card2);color:var(--ib-ink2);border-radius:2px;padding:4px 11px;font-size:var(--ib-xs);cursor:pointer}
.ib-quick button:hover{border-color:var(--ib-gold);color:var(--ib-gold);background:var(--ib-gold2)}
.ib-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:13px;padding-top:12px;border-top:1px dashed var(--ib-line)}
.ib-error{margin:12px 0 0;padding:9px 12px;border-radius:3px;background:var(--ib-red2);color:var(--ib-red);font-size:var(--ib-sm)}
/* 结果 */
.ib-result,.ib-panel,.ib-about{background:var(--ib-card);border:1px solid var(--ib-line);border-radius:var(--ib-r);padding:19px 21px;margin-bottom:16px;box-shadow:var(--ib-shadow2)}
.ib-section-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:8px;margin-bottom:12px}
.ib-section-head h2{margin:0;font-size:var(--ib-lg)}
.ib-section-head p{margin:0;font-size:var(--ib-sm);color:var(--ib-ink3)}
.ib-state{font:var(--ib-xs)/1.6 var(--ib-serif);color:var(--ib-green);background:var(--ib-green2);border-radius:2px;padding:2px 9px;margin-left:6px}
.ib-state.is-bad{color:var(--ib-red);background:var(--ib-red2)}
.ib-verdict{border:1px dashed var(--ib-line);border-radius:3px;background:var(--ib-card2);padding:12px 15px;margin-bottom:12px;font-size:var(--ib-sm);color:var(--ib-ink2)}
.ib-verdict b{font:700 var(--ib-lg)/1.5 var(--ib-serif)}
.ib-verdict.is-ok{border-style:solid;border-color:var(--ib-green);background:var(--ib-green2)}
.ib-verdict.is-bad{border-style:solid;border-color:var(--ib-red);background:var(--ib-red2)}
.ib-strip{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:14px}
.ib-strip-cell{border:1px solid var(--ib-line);border-bottom:3px solid var(--ib-gold);border-radius:2px;background:var(--ib-card2);padding:8px 10px;min-width:0;flex:1}
.ib-strip-cell small{display:block;font-size:11px;color:var(--ib-ink3)}
.ib-strip-cell b{display:block;font:700 var(--ib-md)/1.5 var(--ib-mono);color:var(--ib-ink);word-break:break-all}
.ib-strip-cell.is-check{border-bottom-color:var(--ib-green)}
.ib-strip-cell.is-check b{color:var(--ib-green)}
.ib-weighted{border:1px solid var(--ib-line);border-radius:3px;overflow:hidden;margin-bottom:14px}
.ib-weighted-head{display:flex;justify-content:space-between;gap:8px;padding:9px 13px;background:var(--ib-card2);border-bottom:1px solid var(--ib-line);font:700 var(--ib-sm)/1.6 var(--ib-serif)}
.ib-weighted-head span{font:var(--ib-xs)/1.8 var(--ib-mono);color:var(--ib-green)}
.ib-weighted-grid{display:grid;grid-template-columns:repeat(13,minmax(0,1fr));gap:1px;background:var(--ib-line);padding:1px}
.ib-wcell{background:var(--ib-card);padding:6px 2px;text-align:center;min-width:0}
.ib-wcell i{display:block;font-style:normal;font:10px/1.4 var(--ib-mono);color:var(--ib-ink3)}
.ib-wcell b{display:block;font:700 var(--ib-sm)/1.5 var(--ib-mono);color:var(--ib-ink)}
.ib-wcell em{display:block;font-style:normal;font:10px/1.4 var(--ib-mono);color:var(--ib-gold)}
.ib-wcell.is-x3{background:var(--ib-gold2)}
.ib-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.ib-col{background:var(--ib-card2);border:1px solid var(--ib-soft);border-radius:3px;padding:13px 15px;min-width:0}
.ib-col h3{margin:0 0 9px;font-size:var(--ib-md);color:var(--ib-green)}
.ib-line-row{display:flex;flex-wrap:wrap;gap:6px 12px;font-size:var(--ib-sm);padding:5px 0;border-bottom:1px dashed var(--ib-line)}
.ib-line-row:last-child{border-bottom:0}
.ib-line-row span{color:var(--ib-ink3);min-width:64px}
.ib-line-row b{font-family:var(--ib-mono);color:var(--ib-ink);font-weight:700;word-break:break-all}
.ib-line-row em{font-style:normal;font-family:var(--ib-mono);color:var(--ib-gold);font-size:var(--ib-xs)}
.ib-notes{display:flex;flex-wrap:wrap;gap:7px;margin-top:12px}
.ib-note{border-left:3px solid var(--ib-gold);background:var(--ib-card2);border-radius:2px;padding:6px 10px;font-size:var(--ib-xs);color:var(--ib-ink2)}
/* 双栏 */
.ib-two-col{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.ib-two-col>*{min-width:0}
.ib-panel h2{margin:0 0 6px;font-size:var(--ib-lg)}
.ib-panel-hint{margin:0 0 12px;font-size:var(--ib-sm);color:var(--ib-ink3)}
.ib-panel textarea{width:100%;resize:vertical;border:1px solid var(--ib-line);border-radius:3px;background:var(--ib-card2);color:var(--ib-ink);padding:10px 12px;font:var(--ib-sm)/1.7 var(--ib-mono);outline:0}
.ib-panel textarea:focus{border-color:var(--ib-green)}
.ib-panel-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.ib-panel-actions .ib-btn{min-height:34px;padding:0 13px;font-size:var(--ib-xs)}
.ib-batch-out,.ib-import-out{margin-top:12px;font-size:var(--ib-sm)}
.ib-sum{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:9px}
.ib-chip{font:var(--ib-xs)/1.6 var(--ib-mono);border-radius:2px;padding:3px 10px;background:var(--ib-green2);color:var(--ib-green)}
.ib-chip--bad{background:var(--ib-red2);color:var(--ib-red)}
.ib-small-list{display:flex;flex-wrap:wrap;gap:6px}
.ib-small-list span{border:1px solid var(--ib-line);border-radius:2px;padding:3px 9px;font:var(--ib-xs)/1.6 var(--ib-mono);color:var(--ib-ink2);word-break:break-all}
.ib-import-list{margin:8px 0 0;padding-left:18px;color:var(--ib-ink2);font-size:var(--ib-xs)}
.ib-about h2{margin:0 0 12px;font-size:var(--ib-lg)}
.ib-about-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(225px,1fr));gap:12px}
.ib-about-grid>div{background:var(--ib-card2);border:1px solid var(--ib-soft);border-radius:3px;padding:13px 15px;min-width:0}
.ib-about-grid h3{margin:0 0 5px;font-size:var(--ib-md);color:var(--ib-green)}
.ib-about-grid p{margin:0;font-size:var(--ib-sm);color:var(--ib-ink2)}
.ib-page .tskb{color:var(--ib-ink)}
.ib-page .tskb-card,.ib-page .tskb-panel,.ib-page .tskb-related{background:var(--ib-card);border-color:var(--ib-line);color:var(--ib-ink)}
/* 浮层 */
.ib-modal{position:fixed;inset:0;z-index:9000;display:flex;align-items:center;justify-content:center;padding:18px}
.ib-modal[hidden],.ib-toast[hidden]{display:none!important}
.ib-modal-mask{position:absolute;inset:0;background:rgba(36,30,18,.6);backdrop-filter:blur(2px)}
.ib-modal-card{position:relative;width:min(520px,100%);max-height:86vh;overflow:auto;background:var(--ib-card);border:1px solid var(--ib-line);border-top:4px solid var(--ib-gold);border-radius:4px;box-shadow:var(--ib-shadow);padding:23px 25px;color:var(--ib-ink)}
.ib-modal-x{position:absolute;right:12px;top:9px;border:0;background:transparent;color:var(--ib-ink3);font-size:26px;cursor:pointer}
.ib-modal-kicker{font:var(--ib-xs)/1.5 var(--ib-serif);letter-spacing:.08em;color:var(--ib-gold)}
.ib-modal-card h3{font-size:var(--ib-xl);margin:4px 0 12px}
.ib-modal-card p{font-size:var(--ib-sm);color:var(--ib-ink2);margin:0 0 12px}
.ib-modal-card .ib-input{width:100%;border:1px solid var(--ib-line);background:var(--ib-card2);color:var(--ib-ink);border-radius:3px;padding:9px 11px;font:var(--ib-sm)/1.6 var(--ib-mono);outline:0}
.ib-modal-foot{margin-top:16px;display:flex;justify-content:flex-end}
.ib-toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%);z-index:9500;background:var(--ib-green);color:#fff;border-radius:3px;padding:10px 18px;font-size:var(--ib-sm);box-shadow:var(--ib-shadow);max-width:min(90vw,520px)}
/* 响应式 */
@media(max-width:920px){.ib-hero{grid-template-columns:1fr}.ib-shelf{max-width:300px}.ib-cols{grid-template-columns:1fr}.ib-two-col{grid-template-columns:1fr}.ib-weighted-grid{grid-template-columns:repeat(10,minmax(0,1fr))}}
@media(max-width:620px){.ib-page{padding:14px 10px 40px}.ib-hero{padding:20px 17px}.ib-shelf{display:none}.ib-hero-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.ib-query,.ib-result,.ib-panel,.ib-about{padding:15px 14px}.ib-input-row{flex-direction:column}.ib-btn--main{width:100%}.ib-actions .ib-btn{flex:1}.ib-strip-cell{flex:1 1 40%}.ib-weighted-grid{grid-template-columns:repeat(6,minmax(0,1fr))}.ib-notice{flex-direction:column;gap:6px}}
@media(max-width:640px){.tool-rec{width:calc(100vw - 24px)!important;max-width:calc(100vw - 24px)!important;box-sizing:border-box}.tool-rec-grid{grid-template-columns:minmax(0,1fr)!important}.tool-rec-item{min-width:0!important;width:100%!important;box-sizing:border-box}.tool-rec-body,.tool-rec-body b,.tool-rec-body small{min-width:0;max-width:100%;overflow-wrap:anywhere}}
@media print{.ib-query,.ib-quick,.ib-modal,.ib-toast{display:none!important}.ib-page{background:#fff}}

/* 公共底部套件 legend 表格在窄屏会撑宽文档（本批文案较长），页面级兜底 */
@media (max-width: 640px) {
    .tskb-card { overflow-x: auto; }
    .tskb-legend { min-width: 0; width: 100%; table-layout: fixed; }
    .tskb-legend th, .tskb-legend td { overflow-wrap: anywhere; word-break: break-word; white-space: normal; }
    .tskb-tabs { flex-wrap: wrap; }
}