/* SwimLab.ai — Stroke Authority Pack */
.stroke-article{max-width:1200px;margin:0 auto;padding:18px 20px}
.stroke-article header{margin:6px 0 18px}
.stroke-article h1{margin:0 0 10px;font-size:34px;letter-spacing:-.02em}
.stroke-article .lead{font-size:18px;line-height:1.75;opacity:.92;margin:0 0 10px}
.stroke-article .sublead{margin:0 0 16px;opacity:.78;line-height:1.7}
.stroke-article h2{margin:28px 0 10px;font-size:22px}
.stroke-article h3{margin:18px 0 8px;font-size:18px}
.stroke-article p{line-height:1.8;margin:10px 0}
.stroke-article ul,.stroke-article ol{line-height:1.8;margin:10px 0 10px 22px}
.stroke-article .grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media (max-width:900px){.stroke-article .grid{grid-template-columns:1fr}}
.stroke-article .card{border:1px solid rgba(15,23,42,.10);border-radius:16px;padding:14px;background:rgba(255,255,255,.55)}
@media (prefers-color-scheme:dark){.stroke-article .card{border-color:rgba(255,255,255,.12);background:rgba(255,255,255,.04)}}
.stroke-article .callout{margin:16px 0;padding:14px;border-radius:16px;background:rgba(14,165,233,.08);border:1px solid rgba(14,165,233,.20)}
.stroke-article .kpi{display:flex;gap:10px;flex-wrap:wrap;margin:10px 0}
.stroke-article .kpi span{display:inline-flex;gap:6px;align-items:center;padding:7px 11px;border-radius:999px;border:1px solid rgba(14,165,233,.20);background:rgba(14,165,233,.10);font-size:13px;white-space:nowrap}
.stroke-article .cluster{display:grid;grid-template-columns:280px 1fr;gap:16px;align-items:start}
@media (max-width:900px){.stroke-article .cluster{grid-template-columns:1fr}}
.cluster-nav{position:sticky;top:12px;border:1px solid rgba(15,23,42,.10);border-radius:16px;padding:12px;background:rgba(255,255,255,.55)}
@media (prefers-color-scheme:dark){.cluster-nav{border-color:rgba(255,255,255,.12);background:rgba(255,255,255,.04)}}
.cluster-nav strong{display:block;margin-bottom:8px}
.cluster-nav a{display:block;padding:7px 8px;border-radius:10px;text-decoration:none}
.cluster-nav a:hover{background:rgba(14,165,233,.08)}
.cluster-nav a[aria-current="page"]{background:rgba(14,165,233,.14);border:1px solid rgba(14,165,233,.25)}
.cluster-nav hr{border:0;border-top:1px solid rgba(15,23,42,.10);margin:10px 0}
@media (prefers-color-scheme:dark){.cluster-nav hr{border-top-color:rgba(255,255,255,.12)}}

.cluster-nav__head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.cluster-nav__toggle{display:none;border:1px solid rgba(15,23,42,.12);background:transparent;padding:8px 10px;border-radius:12px;font-weight:600;cursor:pointer}
@media (prefers-color-scheme:dark){.cluster-nav__toggle{border-color:rgba(255,255,255,.18)}}
@media (max-width:900px){
  .cluster-nav{position:relative;top:auto}
  .cluster-nav__toggle{display:inline-flex}
  .cluster-nav__list{display:none;margin-top:10px}
  .cluster-nav.is-open .cluster-nav__list{display:block}
}

.breadcrumbs{font-size:13px;opacity:.8;margin:0 0 10px}
.breadcrumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.breadcrumbs li{display:flex;gap:6px;align-items:center}
.breadcrumbs li+li:before{content:"›";opacity:.6;margin-right:6px}
.breadcrumbs a{text-decoration:none}
.breadcrumbs a:hover{text-decoration:underline}

.stroke-article table{width:100%;border-collapse:collapse;margin:10px 0}
.stroke-article th,.stroke-article td{border-bottom:1px solid rgba(15,23,42,.10);padding:10px 8px;text-align:left;vertical-align:top}
@media (prefers-color-scheme:dark){.stroke-article th,.stroke-article td{border-bottom-color:rgba(255,255,255,.12)}}
.stroke-article th{font-size:12px;text-transform:uppercase;letter-spacing:.02em;opacity:.75}

/* FAQ */
.faq{display:grid;gap:10px;margin-top:10px}
.faq__item{border:1px solid rgba(15,23,42,.10);border-radius:14px;padding:10px 12px;background:rgba(255,255,255,.55)}
@media (prefers-color-scheme:dark){.faq__item{border-color:rgba(255,255,255,.12);background:rgba(255,255,255,.04)}}
.faq__item summary{cursor:pointer}
.faq__answer{margin-top:8px}