body{background:var(--bg);}
.breadcrumbs{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.breadcrumbs a{text-decoration:none;transition:color .2s ease}
.breadcrumbs a:hover{color:var(--blue)}

/* 文章头部：渐变背景区 + 装饰圆环 */
.article-header{padding:108px 28px 50px}
.article-header__card{
  position:relative;max-width:var(--layout-width);margin:auto;
  overflow:hidden;padding:54px 64px 48px;
  border:1px solid rgba(0,66,154,.12);border-radius:22px;
  background:linear-gradient(135deg,#fff 0%,#f7faff 62%,#edf5ff 100%);
  box-shadow:0 20px 52px rgba(15,45,88,.06)
}
.article-header__card::after{
  content:"";position:absolute;left:0;top:0;width:6px;height:100%;background:var(--blue)
}
.article-header .breadcrumbs{margin-bottom:24px}
.article-header__content{position:relative;z-index:1;max-width:980px}
.article-header__eyebrow{display:flex;align-items:center;gap:10px;margin-bottom:18px;color:var(--blue);font-size:13px;font-weight:800;letter-spacing:.12em}
.article-header__eyebrow::before{content:"";width:28px;height:2px;background:var(--blue)}
.article-header h1{margin:0;color:var(--ink);font-size:clamp(38px,5vw,58px);line-height:1.18;letter-spacing:-.045em}
.article-header__summary{max-width:820px;margin:21px 0 0;color:#56657a;font-size:17px;line-height:1.9}
.article-meta{margin-top:28px;display:flex;align-items:center;flex-wrap:wrap;gap:10px 12px;color:#718096;font-size:13px}
.article-meta span{display:inline-flex;align-items:center;min-height:30px;padding:5px 11px;border:1px solid rgba(0,66,154,.11);border-radius:999px;background:rgba(255,255,255,.72)}

.article-layout{
  width:min(var(--layout-width),calc(100% - 56px));margin:0 auto 86px;
  display:grid;grid-template-columns:minmax(var(--content-min),1fr) 280px;gap:42px;align-items:start
}
.article-layout--no-toc{display:block}
.article-main{min-width:var(--content-min)}
.content-panel{background:#fff;border:1px solid var(--line);border-radius:18px;padding:58px 64px 70px;box-shadow:var(--shadow)}
.article-content{font-size:16px;line-height:1.95;overflow-wrap:anywhere}
.article-content > :first-child{margin-top:0!important}
.article-content > :last-child{margin-bottom:0!important}
.article-content h2,.article-content h3,.article-content h4{scroll-margin-top:32px;color:var(--ink)}
.article-content h2{position:relative;margin:66px 0 25px;padding:0 0 16px 19px;border-bottom:1px solid var(--line);font-size:30px;line-height:1.4;letter-spacing:-.025em;font-weight:800}
.article-content h2::before{content:"";position:absolute;left:0;top:.22em;width:5px;height:1.05em;border-radius:5px;background:var(--blue)}
.article-content h3{position:relative;margin:44px 0 18px;padding-left:18px;font-size:23px;line-height:1.45;font-weight:780}
.article-content h3::before{content:"";position:absolute;left:0;top:.49em;width:8px;height:8px;border-radius:2px;background:var(--blue)}
.article-content h4{margin:32px 0 14px;font-size:18px;line-height:1.55;font-weight:750}
.article-content p{margin:0 0 21px;color:var(--text);font-size:16px;line-height:2;text-align:justify}
.article-content strong{color:#25344c;font-weight:750}
.article-content em{color:#55667d}
.article-content a{color:var(--blue);text-decoration:none;background:linear-gradient(currentColor,currentColor) 0 100%/100% 1px no-repeat;transition:color .2s ease,background-size .2s ease}
.article-content a:hover{color:var(--blue-dark);background-size:0 1px}
.article-content ul,.article-content ol{margin:23px 0 29px;padding:20px 26px 20px 49px;border:1px solid #e5ebf3;border-radius:13px;background:#f8fafc}
.article-content li{margin:8px 0;padding-left:5px;color:#415069;line-height:1.88}
.article-content li::marker{color:var(--blue);font-weight:800}
.article-content ul ul,.article-content ul ol,.article-content ol ul,.article-content ol ol{margin:10px 0;padding-top:8px;padding-bottom:8px;border:0;background:transparent}
.article-content blockquote{position:relative;margin:31px 0;padding:24px 28px 24px 32px;border:0;border-left:4px solid var(--blue);border-radius:0 13px 13px 0;background:var(--blue-soft);color:#33445f}
.article-content blockquote::before{content:"\201c";position:absolute;right:22px;top:-10px;color:rgba(0,66,154,.10);font:700 76px/1 Georgia,serif}
.article-content blockquote p{margin:0;color:inherit}
.article-content blockquote cite{display:block;margin-top:10px;color:var(--muted);font-size:13px;font-style:normal}
.article-content figure,.article-content .wp-block-image{margin:35px 0}
.article-content img{display:block;max-width:100%;height:auto;margin:0 auto;border-radius:13px;background:#eef1f5;box-shadow:0 13px 34px rgba(22,42,72,.09);transition:transform .35s ease,box-shadow .35s ease}
.article-content figure:hover img,.article-content .wp-block-image:hover img{transform:translateY(-2px);box-shadow:0 20px 46px rgba(22,42,72,.13)}
.article-content figcaption,.article-content .wp-element-caption{margin-top:11px;color:var(--muted);font-size:13px;line-height:1.6;text-align:center}
.article-content .wp-block-gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:19px;margin:35px 0}
.article-content .wp-block-gallery figure{margin:0}
.article-content hr{margin:46px 0;border:0;border-top:1px solid var(--line)}
.article-content table{width:100%;margin:29px 0;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:13px;overflow:hidden;font-size:14px}
.article-content th,.article-content thead,.article-content td{padding:14px 16px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.article-content th,.article-content thead{background:var(--blue-soft);color:#26364c;font-weight:750}
.article-content tr:last-child td{border-bottom:0}
.article-content th:last-child,.article-content thead:last-child,.article-content td:last-child{border-right:0}
.article-content code{padding:.18em .42em;border-radius:5px;background:#eef2f7;color:#33445d;font-family:Consolas,Monaco,monospace;font-size:.9em}
.article-content pre{margin:27px 0;padding:21px 23px;border-radius:13px;overflow:auto;background:#152033;color:#eaf1fb;line-height:1.7}
.article-content pre code{padding:0;background:transparent;color:inherit}
.article-content .aligncenter{margin-left:auto;margin-right:auto}
.article-content .alignwide{width:min(1120px,calc(100vw - 56px));max-width:none;margin-left:50%;transform:translateX(-50%)}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* 文章目录 */
.article-aside{position:sticky;top:100px;min-width:0}
.toc{overflow:hidden;border:1px solid var(--line);border-radius:16px;background:rgba(255,255,255,.97);box-shadow:0 14px 38px rgba(22,42,72,.06)}
.toc__head{padding:20px 20px 16px;border-bottom:1px solid var(--line);background:linear-gradient(135deg,#fff,#f3f7fd)}
.toc__kicker{margin-bottom:4px;color:var(--blue);font-size:11px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
.toc__row{display:flex;align-items:center;justify-content:space-between;gap:12px}
.toc__title{color:var(--ink);font-size:17px;font-weight:800}
.toc__toggle{display:none;border:0;background:transparent;color:var(--blue);font:inherit;cursor:pointer}
.toc__body{max-height:calc(100vh - 352px);overflow:auto;padding:13px 12px 16px}
.toc__list{list-style:none;margin:0;padding:0}
.toc__list li{margin:0}
.toc__list a{display:block;padding:8px 10px;border-left:2px solid transparent;border-radius:0 8px 8px 0;color:#69768c;font-size:13px;line-height:1.5;text-decoration:none;transition:.2s ease}
.toc__list .toc-h3 a{padding-left:24px;font-size:12.5px}
.toc__list a:hover,.toc__list a.is-active{border-left-color:var(--blue);background:var(--blue-soft);color:var(--blue)}
.toc__placeholder{padding:8px 10px;color:var(--muted);font-size:13px}
.toc__actions{display:grid;gap:12px;padding:20px;border-top:1px solid var(--line);background:#fff}
.toc-action{display:flex;align-items:center;justify-content:center;min-height:54px;padding:13px 18px;border:1px solid var(--blue);border-radius:10px;font-size:16px;font-weight:800;line-height:1.2;text-align:center;text-decoration:none;cursor:pointer;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,color .22s ease}
.toc-action:hover{transform:translateY(-2px)}
.toc-action--primary{background:var(--blue);color:#fff;box-shadow:0 10px 24px rgba(0,66,154,.18)}
.toc-action--primary:hover{background:var(--blue-dark);box-shadow:0 14px 28px rgba(0,66,154,.24)}
.toc-action--secondary{background:#fff;color:var(--blue);font-family:inherit}
.toc-action--secondary:hover{background:var(--blue-soft)}

/* 上一篇 / 下一篇 */
.post-navigation{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:24px}
.post-nav-card{position:relative;display:flex;min-height:132px;padding:22px 24px;border:1px solid var(--line);border-radius:15px;background:#fff;text-decoration:none;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.post-nav-card:hover{transform:translateY(-3px);border-color:rgba(0,66,154,.32);box-shadow:0 16px 34px rgba(18,42,77,.08)}
.post-nav-card--next{text-align:right;justify-content:flex-end}
.post-nav-card__inner{max-width:88%}
.post-nav-card__label{display:block;margin-bottom:10px;color:var(--blue);font-size:12px;font-weight:800;letter-spacing:.08em}
.post-nav-card__title{display:block;color:var(--ink);font-size:17px;font-weight:760;line-height:1.6}
.post-nav-card__arrow{position:absolute;bottom:20px;color:var(--blue);font-size:18px}
.post-nav-card--prev .post-nav-card__arrow{left:24px}
.post-nav-card--next .post-nav-card__arrow{right:24px}

/* 相关文章 */
.related-posts{margin-top:44px;padding:30px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 14px 38px rgba(22,42,72,.045)}
.related-posts__head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:20px}
.related-posts__eyebrow{margin-bottom:5px;color:var(--blue);font-size:11px;font-weight:800;letter-spacing:.12em}
.related-posts h2{margin:0;color:var(--ink);font-size:25px;letter-spacing:-.02em}
.related-posts__more{color:var(--blue);font-size:13px;text-decoration:none}
.related-posts__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}
.related-card{display:flex;flex-direction:column;min-height:300px;overflow:hidden;border:1px solid var(--line);border-radius:14px;background:#fff;text-decoration:none;transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease}
.related-card:hover{transform:translateY(-4px);border-color:rgba(0,66,154,.28);box-shadow:0 17px 34px rgba(18,42,77,.09)}
.related-card__media{display:block;aspect-ratio:16/9;overflow:hidden;background:#edf2f8}
.related-card__media img{display:block;width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.related-card:hover .related-card__media img{transform:scale(1.045)}
.related-card__body{display:flex;flex:1;flex-direction:column;padding:18px 20px 20px}
.related-card__category{color:var(--blue);font-size:11px;font-weight:800;letter-spacing:.08em}
.related-card__title{margin-top:10px;color:var(--ink);font-size:16px;font-weight:760;line-height:1.55}
.related-card__desc{margin-top:7px;color:#778399;font-size:13px;line-height:1.65}
.related-card__arrow{margin-top:auto;padding-top:14px;color:var(--blue)}

[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .55s ease,transform .55s ease}
[data-reveal].is-visible{opacity:1;transform:none}

@media (max-width:1180px){
  .article-layout{grid-template-columns:1fr;gap:24px}
  .article-main{min-width:0;width:100%}
  .article-aside{grid-row:1}
  .toc{position:relative;top:auto}
  .toc__toggle{display:block}
  .toc__body{display:none;max-height:none}
  .toc.is-open .toc__body{display:block}
}
@media (max-width:760px){
  .site-bar__inner{padding:15px 18px}
  .breadcrumbs{display:none}
  .article-header{min-height:auto}
  .article-header__card{padding:74px 28px 0}
  .article-header h1{font-size:36px}
  .article-header__summary{font-size:15px;line-height:1.8}
  .article-layout{width:calc(100% - 28px);margin-bottom:58px}
  .content-panel{padding:35px 22px 48px;border-radius:14px}
  .article-content h2{margin-top:52px;font-size:25px}
  .article-content h3{margin-top:37px;font-size:20px}
  .article-content p{font-size:15.5px;line-height:1.92;text-align:left}
  .article-content ul,.article-content ol{padding:17px 18px 17px 39px}
  .article-content .wp-block-gallery{grid-template-columns:1fr}
  .post-navigation{grid-template-columns:1fr}
  .related-posts{padding:24px 18px}
  .related-posts__grid{grid-template-columns:1fr}
  .related-posts__more{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition:none!important}
  [data-reveal]{opacity:1!important;transform:none!important}
}