.ins-head{position:sticky;top:0;z-index:20;background:rgba(249,248,245,.9);backdrop-filter:blur(10px);border-bottom:1px solid var(--ink-12);padding:12px 7vw}
.ins-head-i{max-width:1120px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px}
.ins-head img{display:block;width:auto;height:27px}.ins-nav{display:flex;align-items:center;gap:18px;font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase}
.ins-nav a{color:var(--ink-60);text-decoration:none}.ins-nav a:hover{color:var(--accent-ink)}
.ins-nav .lang-opt{appearance:none;border:0;background:none;padding:2px;color:var(--ink-60);font:inherit;letter-spacing:inherit;cursor:pointer}.ins-nav .lang-opt.is-on{color:var(--ink)}.ins-nav .lang-opt:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.ins-main{width:min(1120px,86vw);margin:auto;padding:clamp(54px,8vw,104px) 0}
.ins-kicker{font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--accent-ink);margin-bottom:16px}
.ins-title{font-family:var(--sans);font-size:clamp(2.2rem,6vw,5.4rem);font-weight:900;line-height:.98;letter-spacing:-.04em;max-width:15ch}
.ins-lede{font-size:clamp(1.05rem,1.6vw,1.28rem);line-height:1.65;color:var(--ink-60);max-width:66ch;margin-top:26px}
.ins-method{max-width:72ch;margin-top:18px;font-family:var(--mono);font-size:11px;line-height:1.7;color:var(--ink-60)}.ins-method a{color:var(--ink);text-decoration-color:var(--accent);text-underline-offset:3px}
.ins-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--ink-12);border:1px solid var(--ink-12);margin-top:clamp(48px,8vw,84px)}
.ins-card{display:flex;flex-direction:column;min-height:300px;padding:clamp(26px,4vw,46px);background:var(--paper);text-decoration:none;color:var(--ink);transition:background .2s ease}
.ins-card:hover{background:#f1ede4}.ins-card .n{font-family:var(--mono);font-size:11px;color:var(--accent-ink);letter-spacing:.16em;text-transform:uppercase}
.ins-card h2{font-family:var(--sans);font-size:clamp(1.5rem,3vw,2.35rem);line-height:1.08;letter-spacing:-.025em;margin:24px 0 14px}
.ins-card p{color:var(--ink-60);line-height:1.6;max-width:48ch}.ins-card .more{margin-top:auto;padding-top:28px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent-ink)}
.article{width:min(760px,86vw);margin:auto;padding:clamp(52px,8vw,96px) 0}.article-head{margin-bottom:clamp(50px,8vw,84px)}
.breadcrumbs{width:min(760px,86vw);margin:clamp(24px,4vw,38px) auto 0;display:flex;align-items:center;gap:9px;overflow:hidden;font-family:var(--mono);font-size:10px;letter-spacing:.06em;color:var(--ink-60)}.breadcrumbs a{color:inherit;text-decoration:none}.breadcrumbs a:hover{color:var(--accent-ink)}.breadcrumbs [aria-current]{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.breadcrumbs .sep{color:var(--ink-12)}
.article h1{font-family:var(--sans);font-size:clamp(2.3rem,6vw,4.8rem);line-height:.98;letter-spacing:-.04em;font-weight:900}
.article-meta{font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--ink-60);margin-top:20px}
.article-method-link{display:inline-block;margin-top:.55rem;color:var(--ink-60);font-size:.82rem;text-decoration:underline;text-decoration-color:rgba(143,157,176,.45);text-underline-offset:3px}.article-method-link:hover{color:var(--ink);text-decoration-color:currentColor}
.article-answer{font-size:clamp(1.08rem,1.8vw,1.3rem);line-height:1.65;border-left:4px solid var(--accent);padding:4px 0 4px 22px;margin:34px 0}
.article-toc{border-top:1px solid var(--ink-12);border-bottom:1px solid var(--ink-12);padding:22px 0;margin:42px 0}.article-toc b{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent-ink)}
.article-toc ol{margin:14px 0 0 20px;line-height:1.9}.article-toc a{color:var(--ink)}
.article section{scroll-margin-top:72px;margin-top:58px}.article h2{font-family:var(--sans);font-size:clamp(1.55rem,3vw,2.25rem);line-height:1.1;letter-spacing:-.025em;margin-bottom:18px}
.article h3{font-family:var(--sans);font-size:1.15rem;margin:30px 0 10px}.article p,.article li{font-size:1rem;line-height:1.75;color:rgba(20,20,18,.8)}.article p+p{margin-top:18px}.article ul{margin:16px 0 0 22px}.article li+li{margin-top:8px}
.article table{width:100%;border-collapse:collapse;margin:26px 0;font-size:.92rem}.article th,.article td{text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid var(--ink-12)}.article th{font-family:var(--mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-ink)}
.article-note{background:#f1ede4;padding:20px 22px;margin:28px 0}.article-cta{margin-top:60px;padding-top:30px;border-top:1px solid var(--ink-12);display:flex;flex-direction:column;align-items:flex-start;gap:18px}.article-cta p{margin:0}.article-cta .cta{margin-top:0}
.ins-filters{display:flex;flex-wrap:wrap;gap:8px;margin-top:clamp(34px,5vw,54px)}.ins-filter{appearance:none;border:1px solid var(--ink-12);border-radius:999px;background:transparent;color:var(--ink-60);padding:10px 14px;font:10px var(--mono);letter-spacing:.08em;text-transform:uppercase;cursor:pointer;transition:background .2s ease,border-color .2s ease,color .2s ease}.ins-filter:hover{border-color:var(--accent);color:var(--ink)}.ins-filter.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper)}.ins-filters+.ins-grid{margin-top:22px}.ins-card[hidden]{display:none}
.related-insights{margin-top:60px;padding-top:30px;border-top:1px solid var(--ink-12)}.article .related-insights h2{margin-bottom:22px;font-size:clamp(1.35rem,2.4vw,1.8rem)}.related-insights-list{display:grid;gap:1px;background:var(--ink-12);border:1px solid var(--ink-12)}.related-insights-list a{display:grid;grid-template-columns:1fr auto;gap:7px 18px;padding:18px 20px;background:var(--paper);color:var(--ink);text-decoration:none;transition:background .2s ease}.related-insights-list a:hover{background:#f1ede4}.related-insights-list span{grid-column:1;font:10px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--accent-ink)}.related-insights-list strong{grid-column:1;font-size:1rem;line-height:1.3}.related-insights-list i{grid-column:2;grid-row:1 / 3;align-self:center;color:var(--accent-ink);font-style:normal}
@media(max-width:700px){.ins-grid{grid-template-columns:1fr}.ins-card{min-height:260px}.ins-nav>a:first-child{display:none}.article table{display:block;overflow-x:auto;white-space:normal}.article th,.article td{min-width:150px}}