.article-header{background:var(--deep);color:var(--white);padding:clamp(36px,5vw,56px) var(--outer)}.article-header-inner{max-width:800px}.article-breadcrumb{display:flex;align-items:center;gap:6px;font-family:var(--sans);font-size:0.76rem;color:#6b83a6;margin-bottom:12px}.article-breadcrumb a{color:#6b83a6;transition:color 0.18s}.article-breadcrumb a:hover{color:#93c5fd}.article-breadcrumb span{color:#4a5f7a}.article-header .blog-tag{color:#93c5fd;margin-bottom:10px}.article-header h1{color:var(--white);font-size:clamp(1.6rem,3vw,2.6rem);line-height:1.12;margin-bottom:14px}.article-lead{color:rgba(255,255,255,0.74);font-size:clamp(0.92rem,1.1vw,1.05rem);line-height:1.72;max-width:680px;margin-bottom:18px}.article-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-family:var(--sans);font-size:0.76rem;color:#6b83a6}.article-layout{display:grid;grid-template-columns:1fr 300px;gap:clamp(28px,4vw,56px);max-width:1200px;margin:0 auto;padding:clamp(36px,5vw,56px) var(--outer);align-items:start}.article-body{min-width:0}.article-body h2{font-size:clamp(1.2rem,1.8vw,1.6rem);color:var(--deep);margin:36px 0 12px;padding-bottom:8px;border-bottom:2px solid var(--blue-light)}.article-body h2:first-child{margin-top:0}.article-body h3{font-size:clamp(1.0rem,1.3vw,1.2rem);color:var(--deep);margin:24px 0 10px}.article-body p{color:var(--muted);font-size:0.95rem;line-height:1.78;margin-bottom:14px}.article-body ul,.article-body ol{padding-left:22px;margin:10px 0 18px;color:var(--muted)}.article-body li{font-size:0.93rem;line-height:1.72;margin-bottom:8px}.article-body li strong{color:var(--ink)}.article-body a{color:var(--blue);border-bottom:1px solid #bfdbfe;transition:border-color 0.18s}.article-body a:hover{border-color:var(--blue)}.article-highlight{background:var(--blue-light);border-left:3px solid var(--blue);border-radius:0 var(--radius) var(--radius) 0;padding:14px 18px;margin:20px 0}.article-highlight p{color:var(--deep);font-size:0.93rem;line-height:1.65}.article-example{background:var(--paper-deep);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin:20px 0}.article-example-label{font-family:var(--sans);font-size:0.72rem;font-weight:800;letter-spacing:0.07em;text-transform:uppercase;color:var(--blue);margin-bottom:8px!important}.article-example p{font-size:0.9rem!important;color:var(--muted)!important}.article-related{background:var(--paper-deep);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin-top:36px}.article-related-label{font-family:var(--sans);font-size:0.72rem;font-weight:800;letter-spacing:0.07em;text-transform:uppercase;color:var(--muted);margin-bottom:10px!important}.article-related ul{padding-left:16px;margin:0}.article-related li{margin-bottom:6px}.article-related a{color:var(--blue);font-size:0.86rem;border-bottom:none}.article-related a:hover{text-decoration:underline}.article-sidebar{position:sticky;top:88px;display:flex;flex-direction:column;gap:16px}.sidebar-cta{background:var(--deep);color:var(--white);border-radius:var(--radius);padding:20px 22px}.sidebar-cta .kicker{color:#93c5fd}.sidebar-cta h3{color:var(--white);font-size:1.05rem;margin:8px 0;line-height:1.25}.sidebar-cta p{color:#a8b9d4;font-size:0.82rem;line-height:1.65}.sidebar-cta .btn-primary{display:flex;align-items:center;justify-content:center;width:100%;margin-top:14px;padding:12px 12px;font-size:0.78rem;white-space:normal;text-align:center;line-height:1.3;box-sizing:border-box;gap:4px}.sidebar-toc{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}.sidebar-toc-label{font-family:var(--sans);font-size:0.7rem;font-weight:800;letter-spacing:0.08em;text-transform:uppercase;color:var(--muted);margin-bottom:10px;display:block}.sidebar-toc nav{display:flex;flex-direction:column;gap:6px}.sidebar-toc nav a{font-family:var(--sans);font-size:0.82rem;color:var(--muted);border-left:2px solid var(--line);padding-left:10px;transition:border-color 0.18s,color 0.18s}.sidebar-toc nav a:hover{color:var(--blue);border-color:var(--blue)}.sidebar-links{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px}.sidebar-links-label{font-family:var(--sans);font-size:0.7rem;font-weight:800;letter-spacing:0.08em;text-transform:uppercase;color:var(--muted);margin-bottom:10px;display:block}.sidebar-link{display:flex;align-items:center;gap:8px;font-family:var(--sans);font-size:0.82rem;color:var(--muted);padding:7px 0;border-bottom:1px solid var(--line);transition:color 0.18s}.sidebar-link:last-child{border-bottom:none}.sidebar-link:hover{color:var(--blue)}@media (max-width:900px){.article-layout{grid-template-columns:1fr}.article-sidebar{position:static;order:-1}}@media (max-width:600px){.article-header h1{font-size:clamp(1.5rem,6vw,2rem)}.article-meta{flex-direction:column;align-items:flex-start;gap:4px}}