/* AI Insights: published long-form article layout. */
.article-preview-main { padding-top: 30px; }
.article-breadcrumb { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; color: #60718a; font-size: .84rem; margin: 0 0 20px; }
.article-breadcrumb a { color: var(--insights-teal); text-decoration: none; font-weight: 750; }
.article-breadcrumb a:hover { text-decoration: underline; }
.article-hero { background: #fff; border: 1px solid var(--insights-line); border-radius: 18px; padding: clamp(28px, 5vw, 62px); box-shadow: 0 15px 35px rgba(15,31,56,.045); position: relative; overflow: hidden; }
.article-hero::before { content: ""; position: absolute; left: 0; top: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--insights-teal), var(--insights-gold)); }
.article-kicker { font: 700 .76rem var(--insights-mono); letter-spacing: .08em; color: var(--insights-teal); }
.article-stage { display: inline-block; margin-top: 23px; color: #0c6972; background: #e8f7f5; border: 1px solid #afdcd8; padding: 6px 12px; font-size: .82rem; border-radius: 6px; }
.article-hero h1 { max-width: 850px; font-size: clamp(2rem, 4.3vw, 3.18rem); line-height: 1.35; letter-spacing: -.025em; color: var(--insights-navy); font-weight: 850; margin: 18px 0 18px; }
.article-deck { max-width: 820px; font-size: clamp(1.02rem, 1.5vw, 1.18rem); color: #4e5f74; line-height: 1.9; margin: 0; }
.article-meta { border-top: 1px solid #e9eef4; margin-top: 32px; padding-top: 20px; display: flex; flex-wrap: wrap; gap: 9px 28px; color: #53647d; font-size: .84rem; }
.article-meta strong { color: var(--insights-navy); }
.article-grid { display: grid; grid-template-columns: 240px minmax(0, 1fr); align-items: start; gap: 25px; margin-top: 26px; }
.article-toc-inner { position: sticky; top: 92px; padding: 24px 17px; border: 1px solid var(--insights-line); border-radius: 12px; background: #fff; }
.article-toc-kicker { font: 750 .7rem var(--insights-mono); color: var(--insights-teal); letter-spacing: .11em; margin-bottom: 9px; }
.article-toc h2 { font-size: 1.1rem; font-weight: 800; color: var(--insights-navy); margin: 0 0 16px; }
.article-toc ol { margin: 0; padding: 0 0 0 20px; color: #8391a2; }
.article-toc li { margin: 0 0 13px; padding-left: 2px; font-size: .84rem; line-height: 1.55; }
.article-toc a { text-decoration: none; color: #42516c; }
.article-toc a:hover, .article-toc a:focus-visible { color: var(--insights-teal); text-decoration: underline; }
.article-toc-footnote { border-top: 1px solid #e8eef4; margin-top: 21px; padding-top: 16px; font-size: .78rem; color: #6b778a; }
.article-paper { min-width: 0; border: 1px solid var(--insights-line); border-radius: 12px; background: #fff; box-shadow: 0 7px 24px rgba(15,31,56,.035); padding: clamp(26px, 4.3vw, 58px); }
.article-content { font-size: 1rem; color: #29374c; line-height: 2.07; overflow-wrap: anywhere; }
.article-content > p:first-child { font-size: 1.1rem; line-height: 1.97; color: #2b3e55; }
.article-content p { margin: 0 0 1.35em; }
.article-content h2, .article-content h3 { scroll-margin-top: 100px; color: var(--insights-navy); font-weight: 820; line-height: 1.5; }
.article-content h2 { margin: 2.2em 0 .72em; font-size: clamp(1.33rem, 2.2vw, 1.62rem); border-left: 4px solid var(--insights-teal); padding-left: 15px; }
.article-content h3 { margin: 2em 0 .8em; font-size: 1.22rem; }
.article-content > h2:first-child { margin-top: 0; }
.article-content a { color: #09737d; font-weight: 650; text-underline-offset: 3px; }
.article-content a:hover { color: #07545c; }
.article-content .external-mark { display: inline-block; margin-left: 3px; font-size: .72em; opacity: .7; }
.article-content ul, .article-content ol { margin: 0 0 1.4em; padding-left: 1.6em; }
.article-content li { margin: 0 0 .35em; padding-left: .12em; }
.article-content li::marker { color: var(--insights-teal); }
.article-content code { padding: .13em .35em; border-radius: 4px; background: #eef3f8; color: #8b3660; font-size: .9em; }
.article-table-scroll { max-width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; border: 1px solid #dfe7f0; border-radius: 9px; margin: 20px 0 25px; }
.article-content table { border-collapse: collapse; width: 100%; min-width: 450px; font-size: .89rem; line-height: 1.75; }
.article-content th, .article-content td { text-align: left; vertical-align: top; padding: 13px 15px; border-bottom: 1px solid #e6edf3; }
.article-content th { color: var(--insights-navy); background: #edf5f7; font-weight: 750; }
.article-content tr:last-child td { border-bottom: 0; }
.article-content tbody tr:nth-child(even) { background: #fafcfe; }
.article-content blockquote { margin: 25px 0; padding: 8px 20px; border-left: 3px solid var(--insights-gold); color: #586579; background: #f9fafc; }
.article-end { margin-top: 52px; padding-top: 22px; border-top: 1px solid #e5ebf3; color: #66778a; font-size: .87rem; }
.article-end a { color: var(--insights-teal); font-weight: 750; }
@media (max-width: 940px) {
    .article-grid { grid-template-columns: minmax(0, 1fr); }
    .article-toc-inner { position: static; padding: 21px 22px; }
    .article-toc ol { columns: 2; column-gap: 32px; }
    .article-toc li { break-inside: avoid; }
}
@media (max-width: 650px) {
    .article-preview-main { padding-top: 19px; }
    .article-hero { border-radius: 13px; }
    .article-toc ol { columns: 1; }
    .article-paper { border-radius: 10px; }
    .article-meta { display: block; }
    .article-meta span { display: block; margin-bottom: 6px; }
    .article-content { font-size: .96rem; line-height: 1.96; }
    .article-content h2 { margin-top: 1.8em; }
}
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
}