/* ============ 设计令牌 ============ */
.interactive-article.article-recirculation-transformer{
  color-scheme: light;
  --surface-1:#fcfcfb;
  --plane:#f9f9f7;
  --surface-2:#f2f2ef;
  --ink-1:#0b0b0b;
  --ink-2:#52514e;
  --ink-3:#898781;
  --grid:#e1e0d9;
  --axis:#c3c2b7;
  --border:rgba(11,11,11,0.10);
  --s1:#2a78d6;   /* blue   */
  --s2:#eb6834;   /* orange */
  --s3:#1baf7a;   /* aqua   */
  --good:#0ca30c;
  --warn:#fab219;
  --crit:#d03b3b;
  --div-pos:#2a78d6;  /* 更好 */
  --div-neg:#d03b3b;  /* 更差 */
  --div-mid:#f0efec;
  --accent-soft:rgba(42,120,214,0.10);
  --shadow:0 1px 2px rgba(11,11,11,.05), 0 8px 24px rgba(11,11,11,.04);
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --sans:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
html[data-bs-theme="dark"] .interactive-article.article-recirculation-transformer{
  color-scheme: dark;
  --surface-1:#1a1a19;
  --plane:#0d0d0d;
  --surface-2:#232322;
  --ink-1:#ffffff;
  --ink-2:#c3c2b7;
  --ink-3:#898781;
  --grid:#2c2c2a;
  --axis:#383835;
  --border:rgba(255,255,255,0.10);
  --s1:#3987e5;
  --s2:#d95926;
  --s3:#199e70;
  --good:#0ca30c;
  --div-pos:#3987e5;
  --div-neg:#d03b3b;
  --div-mid:#383835;
  --accent-soft:rgba(57,135,229,0.14);
  --shadow:0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.3);
}

.interactive-article.article-recirculation-transformer, .interactive-article.article-recirculation-transformer *{box-sizing:border-box}
.interactive-article.article-recirculation-transformer{scroll-behavior:smooth; scroll-padding-top:70px}
.interactive-article.article-recirculation-transformer{
  margin:0; background:var(--plane); color:var(--ink-1);
  font-family:var(--sans); font-size:17px; line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
.interactive-article.article-recirculation-transformer .wrap{max-width:820px; margin:0 auto; padding:0 22px}

/* ============ 顶栏 ============ */
.interactive-article.article-recirculation-transformer .topbar{
  position:sticky; top:0; z-index:50;
  background:color-mix(in srgb, var(--plane) 88%, transparent);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--border);
}
.interactive-article.article-recirculation-transformer .topbar-in{max-width:1100px;margin:0 auto;padding:8px 22px;display:flex;align-items:center;gap:14px}
.interactive-article.article-recirculation-transformer .brand{font-weight:700;font-size:14px;letter-spacing:.02em;white-space:nowrap}
.interactive-article.article-recirculation-transformer .brand span{color:var(--ink-3);font-weight:400}
.interactive-article.article-recirculation-transformer .tocbar{display:flex;gap:2px;overflow-x:auto;flex:1;scrollbar-width:none}
.interactive-article.article-recirculation-transformer .tocbar::-webkit-scrollbar{display:none}
.interactive-article.article-recirculation-transformer .tocbar a{
  font-size:12.5px;color:var(--ink-2);text-decoration:none;white-space:nowrap;
  padding:5px 9px;border-radius:7px;
}
.interactive-article.article-recirculation-transformer .tocbar a:hover{background:var(--surface-2);color:var(--ink-1)}
.interactive-article.article-recirculation-transformer .tocbar a.on{background:var(--accent-soft);color:var(--s1);font-weight:600}
.interactive-article.article-recirculation-transformer .tbtn{
  border:1px solid var(--border); background:var(--surface-1); color:var(--ink-2);
  width:32px;height:32px;border-radius:9px;cursor:pointer;flex:none;
  display:grid;place-items:center;font-size:14px
}
.interactive-article.article-recirculation-transformer .tbtn:hover{color:var(--ink-1)}

/* ============ 头图 ============ */
.interactive-article.article-recirculation-transformer .hero{padding:60px 0 24px; border-bottom:1px solid var(--border); background:var(--plane)}
.interactive-article.article-recirculation-transformer .eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.09em;text-transform:uppercase;
  color:var(--s1);font-weight:700;margin-bottom:14px
}
.interactive-article.article-recirculation-transformer h1{font-size:clamp(30px,5.2vw,46px);line-height:1.2;margin:0 0 16px;letter-spacing:-.02em;font-weight:750}
.interactive-article.article-recirculation-transformer .dek{font-size:19px;color:var(--ink-2);line-height:1.7;margin:0 0 24px;max-width:66ch}
.interactive-article.article-recirculation-transformer .meta{font-size:13.5px;color:var(--ink-3);line-height:1.9}
.interactive-article.article-recirculation-transformer .meta a{color:var(--s1);text-decoration:none;border-bottom:1px solid var(--accent-soft)}
.interactive-article.article-recirculation-transformer .meta a:hover{border-bottom-color:var(--s1)}

/* ============ 正文排版 ============ */
.interactive-article.article-recirculation-transformer article{padding:8px 0 80px}
.interactive-article.article-recirculation-transformer h2{
  font-size:27px;margin:64px 0 8px;letter-spacing:-.01em;line-height:1.35;font-weight:720;
  padding-top:8px;
}
.interactive-article.article-recirculation-transformer h2 .num{
  display:inline-block;font-size:13px;color:var(--s1);font-weight:700;
  letter-spacing:.08em;margin-bottom:2px
}
.interactive-article.article-recirculation-transformer h3{font-size:20px;margin:38px 0 6px;line-height:1.45;font-weight:680}
.interactive-article.article-recirculation-transformer h4{font-size:16.5px;margin:26px 0 4px;color:var(--ink-1);font-weight:660}
.interactive-article.article-recirculation-transformer p{margin:14px 0}
.interactive-article.article-recirculation-transformer a{color:var(--s1)}
.interactive-article.article-recirculation-transformer strong{font-weight:660}
.interactive-article.article-recirculation-transformer code{
  font-family:var(--mono);font-size:.87em;background:var(--surface-2);
  padding:.13em .38em;border-radius:5px;border:1px solid var(--border)
}
.interactive-article.article-recirculation-transformer ul,
.interactive-article.article-recirculation-transformer ol{padding-left:1.35em;margin:14px 0}
.interactive-article.article-recirculation-transformer li{margin:7px 0}
.interactive-article.article-recirculation-transformer hr{border:0;border-top:1px solid var(--border);margin:44px 0}

/* ============ 组件 ============ */
.interactive-article.article-recirculation-transformer .lead{font-size:18.5px;color:var(--ink-2)}
.interactive-article.article-recirculation-transformer .callout{
  background:var(--surface-1);border:1px solid var(--border);border-left:3px solid var(--s1);
  border-radius:0 12px 12px 0;padding:16px 20px;margin:26px 0;font-size:15.5px;line-height:1.75
}
.interactive-article.article-recirculation-transformer .callout.warn{border-left-color:var(--s2)}
.interactive-article.article-recirculation-transformer .callout.note{border-left-color:var(--ink-3)}
.interactive-article.article-recirculation-transformer .callout .ct{font-weight:700;font-size:13px;letter-spacing:.03em;color:var(--s1);display:block;margin-bottom:5px}
.interactive-article.article-recirculation-transformer .callout.warn .ct{color:var(--s2)}
.interactive-article.article-recirculation-transformer .callout.note .ct{color:var(--ink-3)}
.interactive-article.article-recirculation-transformer .callout p:first-of-type{margin-top:0}
.interactive-article.article-recirculation-transformer .callout p:last-child{margin-bottom:0}

.interactive-article.article-recirculation-transformer .card{
  background:var(--surface-1);border:1px solid var(--border);border-radius:14px;
  padding:20px;margin:28px 0;box-shadow:var(--shadow)
}
.interactive-article.article-recirculation-transformer .card > h4:first-child{margin-top:0}

.interactive-article.article-recirculation-transformer .chat{font-family:var(--mono);font-size:13.5px;line-height:1.8}
.interactive-article.article-recirculation-transformer .chat .row{display:flex;gap:10px;margin:10px 0;align-items:flex-start}
.interactive-article.article-recirculation-transformer .chat .who{
  flex:none;font-size:11px;font-weight:700;padding:2px 7px;border-radius:5px;margin-top:4px;
  letter-spacing:.03em
}
.interactive-article.article-recirculation-transformer .chat .u .who{background:rgba(208,59,59,.16);color:var(--crit)}
.interactive-article.article-recirculation-transformer .chat .m .who{background:var(--accent-soft);color:var(--s1)}
.interactive-article.article-recirculation-transformer .chat .txt{color:var(--ink-2)}
.interactive-article.article-recirculation-transformer .chat .bad{color:var(--crit);font-weight:700;background:rgba(208,59,59,.10);padding:0 3px;border-radius:3px}

/* 图 */
.interactive-article.article-recirculation-transformer figure{margin:30px 0}
.interactive-article.article-recirculation-transformer .figbox{
  background:#ffffff;border:1px solid var(--border);border-radius:12px;
  padding:14px;overflow:hidden
}
.interactive-article.article-recirculation-transformer figure img{display:block;width:100%;height:auto}
.interactive-article.article-recirculation-transformer figcaption{font-size:13.5px;color:var(--ink-3);line-height:1.65;margin-top:10px;padding:0 2px}
.interactive-article.article-recirculation-transformer figcaption b{color:var(--ink-2);font-weight:640}

/* 公式 */
.interactive-article.article-recirculation-transformer .eq{
  background:var(--surface-1);border:1px solid var(--border);border-radius:12px;
  padding:18px 20px;margin:22px 0;text-align:center;
  font-family:var(--mono);font-size:16px;line-height:2;overflow-x:auto
}
.interactive-article.article-recirculation-transformer .eq .lbl{display:block;font-family:var(--sans);font-size:12.5px;color:var(--ink-3);margin-top:8px;text-align:center}
.interactive-article.article-recirculation-transformer .eqvar{
  display:grid;grid-template-columns:auto 1fr;gap:6px 16px;font-size:14.5px;
  margin:16px 0;line-height:1.6
}
.interactive-article.article-recirculation-transformer .eqvar dt{font-family:var(--mono);color:var(--s1);font-weight:600;white-space:nowrap}
.interactive-article.article-recirculation-transformer .eqvar dd{margin:0;color:var(--ink-2)}

/* KPI */
.interactive-article.article-recirculation-transformer .kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));gap:12px;margin:28px 0}
.interactive-article.article-recirculation-transformer .kpi{
  background:var(--surface-1);border:1px solid var(--border);border-radius:12px;padding:15px 16px
}
.interactive-article.article-recirculation-transformer .kpi .v{font-size:30px;font-weight:730;letter-spacing:-.02em;line-height:1.1;color:var(--s1)}
.interactive-article.article-recirculation-transformer .kpi .v.g{color:var(--s3)}
.interactive-article.article-recirculation-transformer .kpi .v.o{color:var(--s2)}
.interactive-article.article-recirculation-transformer .kpi .k{font-size:12.5px;color:var(--ink-3);margin-top:5px;line-height:1.45}

/* 交互容器 */
.interactive-article.article-recirculation-transformer .viz{
  background:var(--surface-1);border:1px solid var(--border);border-radius:16px;
  margin:32px 0;overflow:hidden;box-shadow:var(--shadow)
}
.interactive-article.article-recirculation-transformer .viz-head{padding:16px 20px 12px;border-bottom:1px solid var(--border)}
.interactive-article.article-recirculation-transformer .viz-title{font-size:15.5px;font-weight:700;letter-spacing:-.01em;display:flex;align-items:center;gap:8px}
.interactive-article.article-recirculation-transformer .viz-title::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--s1);flex:none
}
.interactive-article.article-recirculation-transformer .viz-sub{font-size:13px;color:var(--ink-3);margin-top:5px;line-height:1.6}
.interactive-article.article-recirculation-transformer .viz-body{padding:16px 20px 20px}
.interactive-article.article-recirculation-transformer .viz-foot{
  padding:11px 20px;border-top:1px solid var(--border);background:var(--surface-2);
  font-size:12.5px;color:var(--ink-3);line-height:1.6
}
.interactive-article.article-recirculation-transformer .ctrls{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:16px}
.interactive-article.article-recirculation-transformer .seg{display:inline-flex;background:var(--surface-2);border:1px solid var(--border);border-radius:9px;padding:2px;gap:2px}
.interactive-article.article-recirculation-transformer .seg button{
  border:0;background:transparent;color:var(--ink-2);font:inherit;font-size:13px;
  padding:5px 11px;border-radius:7px;cursor:pointer;white-space:nowrap;font-family:var(--sans)
}
.interactive-article.article-recirculation-transformer .seg button:hover{color:var(--ink-1)}
.interactive-article.article-recirculation-transformer .seg button[aria-pressed="true"]{background:var(--surface-1);color:var(--s1);font-weight:640;box-shadow:0 1px 2px rgba(0,0,0,.07)}
.interactive-article.article-recirculation-transformer .btn{
  border:1px solid var(--border);background:var(--surface-1);color:var(--ink-1);font:inherit;
  font-size:13px;padding:6px 13px;border-radius:9px;cursor:pointer;font-family:var(--sans);
  display:inline-flex;align-items:center;gap:6px
}
.interactive-article.article-recirculation-transformer .btn:hover{background:var(--surface-2)}
.interactive-article.article-recirculation-transformer .btn.pri{background:var(--s1);color:#fff;border-color:transparent;font-weight:600}
.interactive-article.article-recirculation-transformer .btn.pri:hover{filter:brightness(1.08)}
.interactive-article.article-recirculation-transformer .sld{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink-2)}
.interactive-article.article-recirculation-transformer .sld input[type=range]{width:110px;accent-color:var(--s1)}
.interactive-article.article-recirculation-transformer .sld .val{font-family:var(--mono);font-size:12.5px;color:var(--ink-1);min-width:20px;font-weight:600}

/* 图例 */
.interactive-article.article-recirculation-transformer .legend{display:flex;flex-wrap:wrap;gap:14px;font-size:12.5px;color:var(--ink-2);margin:10px 0 4px}
.interactive-article.article-recirculation-transformer .legend i{display:inline-block;width:11px;height:11px;border-radius:3px;margin-right:6px;vertical-align:-1px}

/* 表 */
.interactive-article.article-recirculation-transformer .tblwrap{overflow-x:auto;margin:20px 0;border:1px solid var(--border);border-radius:12px;background:var(--surface-1)}
.interactive-article.article-recirculation-transformer table{border-collapse:collapse;width:100%;font-size:13.5px;font-variant-numeric:tabular-nums}
.interactive-article.article-recirculation-transformer th,
.interactive-article.article-recirculation-transformer td{padding:8px 12px;text-align:right;border-bottom:1px solid var(--grid);white-space:nowrap}
.interactive-article.article-recirculation-transformer th{font-weight:640;color:var(--ink-2);font-size:12.5px;background:var(--surface-2);position:sticky;top:0}
.interactive-article.article-recirculation-transformer th:first-child,
.interactive-article.article-recirculation-transformer td:first-child{text-align:left}
.interactive-article.article-recirculation-transformer tbody tr:last-child td{border-bottom:0}
.interactive-article.article-recirculation-transformer tbody tr:hover{background:var(--surface-2)}
.interactive-article.article-recirculation-transformer td.pos{color:var(--s3);font-weight:640}
.interactive-article.article-recirculation-transformer td.neg{color:var(--crit);font-weight:640}
.interactive-article.article-recirculation-transformer caption{caption-side:bottom;padding:10px 12px;font-size:12.5px;color:var(--ink-3);text-align:left;line-height:1.6}

/* 术语 */
.interactive-article.article-recirculation-transformer .term{
  border-bottom:1px dashed var(--ink-3);cursor:help;
}

/* 目录卡 */
.interactive-article.article-recirculation-transformer .tocard{
  background:var(--surface-1);border:1px solid var(--border);border-radius:14px;padding:18px 22px;margin:32px 0
}
.interactive-article.article-recirculation-transformer .tocard ol{margin:8px 0 0;padding-left:1.25em;font-size:14.5px;color:var(--ink-2)}
.interactive-article.article-recirculation-transformer .tocard li{margin:5px 0}
.interactive-article.article-recirculation-transformer .tocard a{text-decoration:none;color:var(--ink-2)}
.interactive-article.article-recirculation-transformer .tocard a:hover{color:var(--s1)}
.interactive-article.article-recirculation-transformer .tocard .t{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3)}

/* tooltip */
.interactive-article.article-recirculation-transformer .tip{
  position:fixed;pointer-events:none;z-index:99;background:var(--ink-1);color:var(--plane);
  font-size:12px;line-height:1.55;padding:7px 10px;border-radius:8px;opacity:0;
  transition:opacity .1s;font-variant-numeric:tabular-nums;box-shadow:0 4px 16px rgba(0,0,0,.25);
  max-width:230px
}
.interactive-article.article-recirculation-transformer .tip.on{opacity:1}
.interactive-article.article-recirculation-transformer .tip b{color:#fff;font-weight:650}
html[data-bs-theme="dark"] .interactive-article.article-recirculation-transformer .tip{background:#f2f2ef;color:#0b0b0b}
html[data-bs-theme="dark"] .interactive-article.article-recirculation-transformer .tip b{color:#000}

/* SVG 通用 */
.interactive-article.article-recirculation-transformer svg{display:block;max-width:100%;height:auto}
.interactive-article.article-recirculation-transformer .axis-lbl{font-size:11px;fill:var(--ink-3);font-family:var(--sans)}
.interactive-article.article-recirculation-transformer .tick{font-size:10.5px;fill:var(--ink-3);font-family:var(--sans);font-variant-numeric:tabular-nums}
.interactive-article.article-recirculation-transformer .bar-lbl{font-size:11px;fill:var(--ink-2);font-family:var(--sans);font-variant-numeric:tabular-nums;font-weight:600}

.interactive-article.article-recirculation-transformer footer{border-top:1px solid var(--border);padding:34px 0 60px;font-size:13.5px;color:var(--ink-3);line-height:1.8}
.interactive-article.article-recirculation-transformer footer a{color:var(--s1);text-decoration:none}

@media (max-width:640px){
  .interactive-article.article-recirculation-transformer{font-size:16px}
  .interactive-article.article-recirculation-transformer .wrap{padding:0 16px}
  .interactive-article.article-recirculation-transformer h2{font-size:23px;margin-top:48px}
  .interactive-article.article-recirculation-transformer .viz-body{padding:14px}
  .interactive-article.article-recirculation-transformer .eq{font-size:14px;padding:14px}
}
@media print{ .interactive-article.article-recirculation-transformer .topbar,
.interactive-article.article-recirculation-transformer .viz-foot{display:none} }


.interactive-article.article-recirculation-transformer {
  color-scheme: inherit;
  --surface-1: var(--card-bg, var(--main-bg));
  --plane: var(--main-bg);
  --surface-2: var(--bs-tertiary-bg);
  --ink-1: var(--heading-color);
  --ink-2: var(--text-color);
  --ink-3: var(--text-muted-color);
  --grid: var(--main-border-color);
  --axis: var(--tb-border-color, var(--main-border-color));
  --border: var(--main-border-color);
  background: transparent;
  color: var(--ink-1);
  font-family: inherit;
}

.interactive-article.article-recirculation-transformer .wrap {
  max-width: none;
  margin: 0;
  padding: 0;
}

.interactive-article.article-recirculation-transformer .article-intro {
  margin-bottom: 28px;
  padding: 0 0 28px;
  border-bottom: 1px solid var(--border);
}

.interactive-article.article-recirculation-transformer .article-body {
  min-width: 0;
  padding: 0 0 28px;
}

.interactive-article.article-recirculation-transformer .eq .lbl {
  display: block;
  float: none;
  margin-top: 8px;
  color: var(--ink-3);
  font-family: var(--sans);
  font-size: 12.5px;
  line-height: 1.6;
  text-align: center;
}

.interactive-article.article-recirculation-transformer mjx-container[display="true"] {
  max-width: 100%;
  margin: 0.35em 0 !important;
  overflow-x: auto;
  overflow-y: hidden;
}

.interactive-article.article-recirculation-transformer .article-footer {
  margin-top: 56px;
  padding: 28px 0 8px;
  border-top: 1px solid var(--border);
  color: var(--ink-3);
  font-size: 13.5px;
  line-height: 1.8;
}