.nav a[aria-current]{color:var(--blue);background:var(--sky)}
.crumbs{display:flex;flex-wrap:wrap;gap:8px;font-size:14px;font-weight:600;color:var(--ink-2);margin-bottom:18px}
.crumbs a{color:var(--blue)}
.crumbs a:hover{text-decoration:underline}
.page-hero{position:relative;padding:48px 0 72px;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(to bottom,transparent 0 35px,rgba(30,91,216,.07) 35px 36px);-webkit-mask-image:linear-gradient(to bottom,#000 10%,transparent 90%);mask-image:linear-gradient(to bottom,#000 10%,transparent 90%);pointer-events:none}
.page-hero .wrap{position:relative;display:grid;grid-template-columns:1.35fr .65fr;gap:48px;align-items:start}
.page-hero h1{font-size:clamp(28px,3.4vw,44px);font-weight:800;line-height:1.45;margin-bottom:18px}
.page-hero .lead{font-size:18.5px;color:var(--ink-2);max-width:680px;margin-bottom:28px}
.toc{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:22px 24px;box-shadow:var(--shadow)}
.toc h2{font-size:15px;font-weight:700;margin-bottom:10px}
.toc ol{list-style:none;counter-reset:t}
.toc li{counter-increment:t}
.toc a{display:grid;grid-template-columns:26px 1fr;gap:8px;padding:7px 0;border-top:1px solid var(--line);font-size:15px;font-weight:600}
.toc li:first-child a{border-top:0}
.toc a::before{content:counter(t);color:var(--blue);font-weight:800}
.toc a:hover{color:var(--blue)}
.note{margin-top:20px;padding:16px 18px;border-radius:12px;background:var(--sky-2);border-inline-start:4px solid var(--blue);font-size:15.5px}
.prose{max-width:780px}
.prose p{margin-bottom:16px}
.prose p:last-child{margin-bottom:0}
.related{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.related a{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:18px 20px}
.related a strong{display:block;font-size:16.5px;font-weight:700;margin-bottom:4px}
.related a span{display:block;font-size:14.5px;color:var(--ink-2)}
.related a:hover{border-color:var(--blue)}
.related a:hover strong{color:var(--blue)}
@media (max-width:1100px){.page-hero .wrap{grid-template-columns:1fr}.related{grid-template-columns:1fr 1fr}}
@media (max-width:760px){.related{grid-template-columns:1fr}.page-hero{padding:32px 0 56px}}