.article-wrapper{max-width:760px;margin:0 auto;padding:32px 16px;font-family:-apple-system,"Segoe UI",Roboto,sans-serif;color:#1a1a1a}.breadcrumb{font-size:13px;color:#666;margin-bottom:8px}.breadcrumb a{color:#666;text-decoration:none}.breadcrumb a:hover{text-decoration:underline}.post-category-tag{display:inline-block;background:#eef2ff;color:#4338ca;font-size:12px;font-weight:600;text-transform:uppercase;padding:4px 10px;border-radius:4px;margin-bottom:12px}.article-title{font-size:34px;line-height:1.25;font-weight:800;margin:8px 0 12px}.article-subtitle{font-size:17px;color:#4b5563;margin-bottom:20px}.author-meta-row{display:flex;align-items:center;gap:12px;margin-bottom:24px}.author-avatar{border-radius:50%}.author-meta-text{display:flex;flex-direction:column;font-size:13px}.author-name{font-weight:700}.author-role{color:#888;font-size:12px}.post-dates{color:#888}.featured-image{margin:0 0 28px}.featured-image img{width:100%;border-radius:10px;display:block}.featured-image figcaption{font-size:13px;color:#888;font-style:italic;margin-top:8px;text-align:center}.toc-box{background:#f8f9fb;border:1px solid #e5e7eb;border-radius:10px;padding:16px 20px;margin-bottom:24px}.toc-box summary{font-weight:700;cursor:pointer;font-size:15px}.toc-list{margin:12px 0 0;padding-left:20px;columns:2;font-size:14px}.toc-list li{margin-bottom:6px;break-inside:avoid}.toc-list a{color:#2563eb;text-decoration:none}.toc-list a:hover{text-decoration:underline}.quick-answer-box{background:#ecfdf5;border-left:4px solid #10b981;border-radius:6px;padding:16px 20px;margin-bottom:20px}.quick-answer-box strong{display:block;color:#065f46;margin-bottom:6px}.editorial-note-box{background:#fffbeb;border-left:4px solid #f59e0b;border-radius:6px;padding:16px 20px;margin-bottom:28px;font-size:14px}.editorial-note-box strong{display:block;color:#92400e;margin-bottom:6px}.article-content{font-size:17px;line-height:1.75}.article-content h2{font-size:24px;margin:36px 0 14px;font-weight:700}.article-content h3{font-size:19px;margin:26px 0 10px;font-weight:700}.article-content p{margin-bottom:16px}.article-content ul,.article-content ol{margin:0 0 16px 24px}.sources-line{font-size:14px;color:#555;margin:24px 0}.author-bio-box{display:flex;gap:16px;background:#f8f9fb;border-radius:10px;padding:20px;margin-top:36px}.author-bio-avatar{border-radius:50%}.written-by{font-size:12px;color:#888;text-transform:uppercase}.author-bio-text h3{margin:4px 0 8px}.author-bio-text p{font-size:14px;color:#444;margin-bottom:8px}.author-bio-text a{font-size:14px;color:#2563eb;text-decoration:none}.related-posts{max-width:1000px;margin:48px auto;padding:0 16px}.related-posts h2{font-size:22px;margin-bottom:20px}.related-posts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.related-card{display:block;text-decoration:none;color:inherit;border:1px solid #eee;border-radius:10px;overflow:hidden;transition:box-shadow .2s}.related-card:hover{box-shadow:0 4px 14px rgb(0 0 0 / .08)}.related-thumb img{width:100%;height:160px;object-fit:cover;display:block}.related-category{display:inline-block;font-size:11px;font-weight:700;color:#4338ca;text-transform:uppercase;margin:12px 12px 4px}.related-card h3{font-size:16px;margin:0 12px 8px}.related-card p{font-size:13px;color:#666;margin:0 12px 10px}.related-meta{font-size:12px;color:#999;display:block;margin:0 12px 14px}@media (max-width:600px){.article-title{font-size:26px}.toc-list{columns:1}.author-bio-box{flex-direction:column}}.article-wrapper{max-width:1000px}.featured-image{max-width:760px;margin-left:auto;margin-right:auto}.article-layout{display:grid;grid-template-columns:minmax(250px,280px) minmax(0,760px);gap:32px;align-items:start;max-width:1000px;margin:0 auto;padding:0 16px 32px}.article-layout-no-toc{display:block}.article-toc{position:sticky;top:88px;align-self:start;max-height:calc(100vh - 112px);overflow-y:auto;margin:0;padding:14px 12px}.article-toc .toc-list{columns:1;margin:12px 0 0;padding-left:16px}.article-toc .toc-list li{margin-bottom:6px}.article-toc .toc-list .toc-level-3{margin-left:14px;font-size:13px}.article-main{min-width:0;max-width:760px}.article-main .quick-answer-box{display:flex;align-items:flex-start;gap:10px;background:#eef2ff;border-left:3px solid #536dfe;border-radius:7px;padding:14px 16px;margin-bottom:24px}.article-main .quick-answer-icon{display:inline-flex;align-items:center;justify-content:center;flex:0 0 16px;width:16px;height:16px;margin-top:1px;border-radius:50%;background:#536dfe;color:#fff;font-size:11px;font-weight:700;line-height:1}.article-main .quick-answer-box strong{color:#111827;margin-bottom:5px}.article-main .quick-answer-box p{margin:0;color:#27324a}@media (max-width:820px){.article-layout{grid-template-columns:1fr;gap:20px}.article-toc{position:static;max-height:none;overflow:visible}.article-main{max-width:none}}