.article-header { border-bottom: 1px solid var(--line); background: rgba(246, 242, 232, .96); }
.article-header .nav-wrap { min-height: 74px; }
.article-back { padding: 10px 14px; border: 1px solid var(--teal); color: var(--teal); font-size: 12px; font-weight: 700; }
.article-main { background: var(--paper); }
.article-hero { padding: 82px 0 60px; background: var(--ivory); border-bottom: 1px solid var(--line); }
.article-hero-inner { max-width: 920px; }
.article-kicker { margin: 0 0 20px; color: var(--coral-text); font-size: 12px; font-weight: 700; letter-spacing: .08em; }
.article-hero h1 { max-width: 900px; margin: 0; font-size: clamp(40px, 6vw, 68px); line-height: 1.2; letter-spacing: -.05em; }
.article-deck { max-width: 780px; margin: 26px 0 32px; color: var(--muted); font-size: 17px; line-height: 1.9; }
.article-byline { display: grid; grid-template-columns: repeat(5, auto); justify-content: start; gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.article-byline div { min-width: 125px; display: grid; gap: 6px; padding: 15px 22px; border-right: 1px solid var(--line); }
.article-byline div:first-child { padding-left: 0; }
.article-byline span { color: var(--muted); font-size: 9px; }
.article-byline strong { font-size: 12px; }
.article-layout { display: grid; grid-template-columns: 1fr 270px; gap: 90px; padding-top: 72px; padding-bottom: 95px; }
.article-body { max-width: 760px; }
.article-body > p:first-child { color: #334d49; font-size: 19px; line-height: 1.95; }
.article-body h2 { margin: 52px 0 18px; font-size: 30px; line-height: 1.4; }
.article-body h3 { margin: 34px 0 12px; font-size: 20px; }
.article-body p, .article-body li { color: #465d58; font-size: 16px; line-height: 2; }
.article-body ul, .article-body ol { padding-left: 1.4em; }
.article-body li + li { margin-top: 8px; }
.key-box, .warning-box { margin: 30px 0; padding: 24px 26px; border-left: 4px solid var(--teal); background: #edf3ef; }
.warning-box { border-left-color: var(--coral-text); background: #fff0e9; }
.key-box strong, .warning-box strong { display: block; margin-bottom: 8px; }
.key-box p, .warning-box p { margin: 0; font-size: 14px; }
.article-sidebar { align-self: start; position: sticky; top: 30px; }
.side-card { margin-bottom: 16px; padding: 22px; border: 1px solid var(--line); background: var(--ivory); }
.side-card h2 { margin: 0 0 14px; font-size: 15px; }
.side-card p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.8; }
.side-card a { display: block; margin-top: 14px; color: var(--teal); font-size: 12px; font-weight: 700; }
.reference-list { margin-top: 58px; padding-top: 28px; border-top: 1px solid var(--line); }
.reference-list h2 { margin-top: 0; font-size: 21px; }
.reference-list ol { padding-left: 1.2em; }
.reference-list li { color: var(--muted); font-size: 12px; line-height: 1.8; }
.reference-list a { color: var(--teal); text-decoration: underline; text-underline-offset: 3px; }
.review-note { margin-top: 35px; padding: 18px; border: 1px solid var(--line); color: var(--muted); font-size: 12px; line-height: 1.8; }
.related { padding: 70px 0; background: #e7e5da; }
.related h2 { margin: 0 0 28px; font-size: 30px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.related-grid a { min-height: 150px; display: grid; align-content: space-between; padding: 24px; border: 1px solid #d1cec3; background: var(--paper); }
.related-grid span { color: var(--coral-text); font-size: 10px; font-weight: 700; }
.related-grid strong { font-size: 17px; line-height: 1.5; }
@media (max-width: 900px) {
  .article-byline { grid-template-columns: repeat(2, 1fr); }
  .article-byline div { border-bottom: 1px solid var(--line); }
  .article-layout { grid-template-columns: 1fr; gap: 40px; }
  .article-sidebar { position: static; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  .related-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .article-header .brand small { display: none; }
  .article-hero { padding: 58px 0 42px; }
  .article-hero h1 { font-size: 40px; }
  .article-deck { font-size: 15px; }
  .article-byline { grid-template-columns: 1fr 1fr; }
  .article-byline div { min-width: 0; padding: 12px; }
  .article-byline div:first-child { padding-left: 12px; }
  .article-layout { padding-top: 50px; padding-bottom: 70px; }
  .article-body > p:first-child { font-size: 17px; }
  .article-body h2 { font-size: 27px; }
  .article-body p, .article-body li { font-size: 15px; }
  .article-sidebar { grid-template-columns: 1fr; }
}