.article-hero{padding:60px 0 45px;background:linear-gradient(135deg,#f3f7ff,#eefaf6)}.breadcrumbs{margin:0 0 28px;padding:0;display:flex;flex-wrap:wrap;gap:8px;list-style:none;color:var(--muted);font-size:.86rem}.breadcrumbs li:not(:last-child):after{content:"/";margin-left:8px;color:#9aaabe}.article-hero h1{max-width:950px}.article-deck{max-width:820px;color:#4d627a;font-size:1.18rem}.byline{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:25px;color:var(--muted);font-size:.9rem}.article-layout{display:grid;grid-template-columns:240px minmax(0,750px);gap:60px;justify-content:center;align-items:start}.toc{position:sticky;top:110px;padding:22px;border:1px solid var(--line);border-radius:16px;background:#fff}.toc strong{display:block;margin-bottom:12px;color:var(--navy)}.toc ol{margin:0;padding-left:20px}.toc li{margin-bottom:7px;font-size:.84rem;line-height:1.45}.toc a{color:#415b78;text-decoration:none}.toc a:hover{color:var(--blue)}.article-content{min-width:0}.article-content>p:first-of-type{font-size:1.18rem;color:#3d546f}.article-content h2{margin-top:2em;font-size:clamp(1.65rem,3vw,2.15rem)}.article-content h3{margin-top:1.65em}.article-content ul,.article-content ol{padding-left:25px}.article-content li{margin-bottom:.55em}.featured-image{width:100%;margin:0 0 42px;border-radius:24px;box-shadow:var(--shadow)}.callout{margin:28px 0;padding:23px 25px;border-left:5px solid var(--blue);border-radius:14px;background:#edf4ff}.callout.warning{border-left-color:var(--warm);background:#fff6e5}.callout.success{border-left-color:var(--teal);background:#eaf8f3}.callout strong{display:block;margin-bottom:5px;color:var(--navy)}.table-wrap{max-width:100%;margin:28px 0;overflow-x:auto;border:1px solid var(--line);border-radius:16px}.article-content table{width:100%;min-width:620px;border-collapse:collapse;background:#fff}.article-content th,.article-content td{padding:15px 17px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.article-content th{color:var(--navy);background:#eef4fb}.article-content tr:last-child td{border-bottom:0}.calculation{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:25px 0}.calculation div{padding:18px 12px;border-radius:14px;text-align:center;background:#f1f6fc}.calculation strong{display:block;color:var(--blue);font-size:1.35rem}.calculation span{font-size:.78rem;color:var(--muted)}.article-cta{margin:48px 0;padding:34px;border-radius:22px;color:#dce9f8;background:var(--navy)}.article-cta h2{margin-top:0;color:#fff}.article-cta .button{margin-top:10px}.sources{padding-top:25px;border-top:1px solid var(--line)}.sources li{font-size:.9rem}.author-box{display:grid;grid-template-columns:78px 1fr;gap:20px;margin-top:45px;padding:27px;border:1px solid var(--line);border-radius:19px;background:#fff}.author-mark{display:grid;place-items:center;width:78px;height:78px;border-radius:50%;color:#fff;background:var(--navy);font-size:1.35rem;font-weight:900}.author-box h2{margin:0 0 4px;font-size:1.25rem}.author-box p{margin:0;color:var(--muted);font-size:.92rem}.article-faq{margin-top:55px}.article-faq h2{margin-top:0}.article-footer-note{margin-top:40px;color:var(--muted);font-size:.86rem}
@media(max-width:920px){.article-layout{grid-template-columns:1fr;gap:30px}.toc{position:static}.toc ol{columns:2}.article-content{max-width:760px;margin-inline:auto}.calculation{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.article-hero{padding-top:40px}.toc ol{columns:1}.featured-image{border-radius:15px}.calculation{grid-template-columns:1fr 1fr}.author-box{grid-template-columns:1fr}.article-cta{padding:26px 22px}.table-wrap{margin-inline:-5px}}
/* Narrow-view safeguards: keep wide comparison tables inside their own scroller. */
.article-content{max-width:100%}
.table-wrap{width:100%;overscroll-behavior-inline:contain}
@media(max-width:560px){.article-layout{min-width:0}.article-content{width:100%;min-width:0}.table-wrap{margin-inline:0;max-width:calc(100vw - 30px)}}
.article-figure{margin:42px 0}.article-figure img{width:100%;border-radius:22px;box-shadow:var(--shadow)}.article-figure figcaption{margin-top:12px;color:var(--muted);font-size:.88rem;text-align:center}
.related-guides{margin-top:48px;padding-top:28px;border-top:1px solid var(--line)}.related-guides h2{margin-top:0}.related-guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.related-guide{padding:18px;border:1px solid var(--line);border-radius:14px;background:#fff}.related-guide a{font-weight:800;text-decoration:none}.related-guide p{margin:6px 0 0;color:var(--muted);font-size:.86rem}@media(max-width:700px){.related-guide-grid{grid-template-columns:1fr}}