/* 本批专属结构只作用于新四篇及新增区别说明，前三篇样式保持冻结。 */
.batch1-article figure{margin:24px 0}
.batch1-article figcaption{font-size:14px;color:var(--muted);line-height:1.8;margin-bottom:18px}
.batch1-article .batch-method{margin:20px 0}
.batch1-article .batch-method>div{display:grid;grid-template-columns:90px minmax(0,1fr);gap:22px;border-top:1px solid var(--line);padding:17px 0}
.batch1-article .batch-method dt{color:var(--red);font-weight:500}.batch1-article .batch-method dd{margin:0}
.batch1-article .reverse-case{border-top:1px solid var(--line);padding:24px 0 10px}
.batch1-article .reverse-case>h3{font-size:22px;margin-bottom:23px}
.batch1-article .reverse-chain{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px;margin:0 0 20px}
.batch1-article .reverse-chain>div{position:relative}.batch1-article .reverse-chain>div+div::before{content:"→";position:absolute;left:-25px;top:0;color:var(--red)}
.batch1-article .reverse-chain dt{font-size:15px;color:var(--red);margin-bottom:10px}.batch1-article .reverse-chain dd{font-size:17px;margin:0}
.batch1-article .mece-tree-root{position:relative;background:var(--wash);padding:20px 23px;border-radius:3px;margin-bottom:27px}
.batch1-article .mece-tree-root p{font-size:16px;margin:6px 0 12px}.batch1-article .mece-tree-root p:last-child{margin-bottom:0}
.batch1-article .mece-tree-root::after{content:"↓";position:absolute;left:50%;bottom:-31px;color:var(--red)}
.batch1-article .mece-branches{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 30px;list-style:none;padding:14px 0 0}
.batch1-article .mece-branches>li{border-top:1px solid var(--line);padding-top:18px;margin:0}
.batch1-article .mece-branches p,.batch1-article .mece-branches li li{font-size:16px}
.batch1-article .mece-branches ul{padding-left:1.2em;margin:0}
.batch1-article .mece-records{margin-top:28px}.batch1-article .mece-log{list-style:none;padding:0;margin:18px 0 0}
.batch1-article .mece-log>li{display:grid;grid-template-columns:125px minmax(0,1fr);gap:20px;border-top:1px solid var(--line);padding:14px 0;margin:0}
.batch1-article .mece-log-time{font-size:14px}.batch1-article .mece-log-time small{display:block;color:var(--muted);font-size:13px}
.batch1-article .mece-log p{font-size:15px;color:var(--muted);margin:4px 0 0}.batch1-article .mece-log strong{font-size:16px;font-weight:500}
.batch1-article .pareto-bars{list-style:none;padding:0;margin:0}.batch1-article .pareto-bars>li{border-top:1px solid var(--line);padding:17px 0 12px;margin:0}
.batch1-article .pareto-row-heading{display:flex;justify-content:space-between;gap:15px;font-size:17px;align-items:baseline}
.batch1-article .pareto-row-heading>span{white-space:nowrap;color:var(--red)}
.batch1-article .pareto-bars meter{display:block;width:100%;height:20px;margin:12px 0 4px}
.batch1-article .pareto-bars meter::-webkit-meter-bar{background:var(--wash);border:0;border-radius:2px}
.batch1-article .pareto-bars meter::-webkit-meter-optimum-value{background:var(--red)}
.batch1-article .pareto-bars meter::-moz-meter-bar{background:var(--red)}
.batch1-article .pareto-bars p{display:flex;gap:24px;font-size:14px;color:var(--muted);margin:4px 0 0}
.batch1-article .critical-network{position:relative;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-template-areas:"a b c" "f f c";gap:42px 34px;align-items:center;padding:16px 0;margin:20px 0}
.batch1-article .critical-node{position:relative;z-index:1;min-height:140px;border:1px solid var(--line);background:var(--paper);border-radius:3px;padding:14px}
.batch1-article .critical-node.is-critical{border-color:var(--red);background:var(--wash)}
.batch1-article .critical-node h3{font-size:16px;line-height:1.6;margin:0 0 8px}.batch1-article .critical-node p{font-size:19px;margin:0 0 5px}
.batch1-article .critical-node small{font-size:13px;color:var(--muted)}
.batch1-article .critical-node[data-task="A"]{grid-area:a}.batch1-article .critical-node[data-task="B"]{grid-area:b}
.batch1-article .critical-node[data-task="F"]{grid-area:f;width:100%;max-width:220px;justify-self:center}.batch1-article .critical-node[data-task="C"]{grid-area:c}
.batch1-article .critical-edges{position:absolute;inset:0;width:100%;height:100%;overflow:visible;pointer-events:none}
.batch1-article .critical-edges marker path{fill:var(--red)}.batch1-article .critical-edge{fill:none;stroke:var(--red);stroke-width:1;vector-effect:non-scaling-stroke}
.batch1-article .critical-edges-narrow{display:none}
.batch1-article .critical-paths>p{display:flex;justify-content:space-between;gap:18px;border-top:1px solid var(--line);padding:12px 0;margin:0;font-size:16px}
.batch1-article .critical-paths>p>span{color:var(--red)}.batch1-article .critical-finish{font-weight:500;margin:18px 0}
.batch1-article .critical-optional{border:1px dashed var(--line);padding:18px 20px;font-size:15px}.batch1-article .critical-optional p{margin:8px 0}
.batch1-article .critical-changes>section{border-top:1px solid var(--line);padding:17px 0}.batch1-article .critical-changes h4{font-size:18px;margin:0 0 9px}
.batch1-article .critical-changes p{font-size:16px;margin:5px 0}
.batch1-differences{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:26px 0;margin:30px 0}
.batch1-differences h2{font:600 27px/1.6 var(--serif);margin:0 0 14px}.batch1-differences>p{color:var(--muted);font-size:15px}
.batch1-differences dl{margin:20px 0 0}.batch1-differences dl>div{display:grid;grid-template-columns:125px minmax(0,1fr);gap:24px;padding:13px 0;border-top:1px solid var(--line)}
.batch1-differences dt{font-weight:500;color:var(--red)}.batch1-differences dt a{display:inline-block;min-height:44px;padding:8px 0}
.batch1-differences dd{margin:0;padding-top:8px}.batch1-differences dd>span{display:block;font-size:12px;color:var(--muted);margin-bottom:5px}
/* 手机按阅读顺序重排，图中文字保持正常字号，不缩成一张小图。 */
@media(max-width:700px){
  .batch1-article .reverse-chain{grid-template-columns:1fr;gap:30px}.batch1-article .reverse-chain>div+div::before{content:"↓";left:0;top:-29px}
  .batch1-article .reverse-case>h3{font-size:21px}.batch1-article .mece-branches{grid-template-columns:1fr;gap:16px}
  .batch1-article .batch-method>div{grid-template-columns:1fr;gap:7px}
  .batch1-article .mece-log>li{grid-template-columns:105px minmax(0,1fr);gap:13px}
  .batch1-article .pareto-row-heading{font-size:16px}.batch1-article .pareto-bars p{font-size:13px;gap:16px}
  .batch1-article .critical-network{grid-template-columns:repeat(2,minmax(0,1fr));grid-template-areas:"a f" "b f" "c c";gap:42px 24px}
  .batch1-article .critical-node{padding:12px;min-height:164px}.batch1-article .critical-node[data-task="F"]{align-self:start;max-width:none}
  .batch1-article .critical-edges-wide{display:none}.batch1-article .critical-edges-narrow{display:block}
  .batch1-article .critical-paths>p{font-size:14px;flex-wrap:wrap;gap:6px 15px}
  .batch1-article .thinking-memory h2{font-size:23px}
  .batch1-differences h2{font-size:24px}.batch1-differences dl>div{grid-template-columns:1fr;gap:0;padding:12px 0}.batch1-differences dd{padding-top:0;font-size:15px}
}