.kb{max-width:780px;margin:0 auto;padding:100px 24px 60px}.kb__back{display:inline-flex;align-items:center;gap:6px;margin-bottom:24px;font-size:14px;color:var(--color-text-muted);text-decoration:none}.kb__back:hover{color:var(--color-accent)}.kb__meta{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:20px;font-size:13px;color:var(--color-text-dim)}.kb__meta span{display:flex;align-items:center;gap:4px}.kb h1{font-size:clamp(26px,3.5vw,38px);font-weight:700;line-height:1.25;margin-bottom:16px}.kb__lead{font-size:18px;color:var(--color-text-muted);line-height:1.7;margin-bottom:32px;padding-bottom:32px;border-bottom:1px solid var(--color-border)}.kb__toc{background:var(--color-bg-alt);border:1px solid var(--color-border);border-radius:12px;padding:20px 24px;margin-bottom:40px}.kb__toc h2{font-size:14px;text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-dim);margin-bottom:12px}.kb__toc ol{list-style:decimal;padding-left:20px;margin:0}.kb__toc li{padding:4px 0;font-size:14px}.kb__toc a{color:var(--color-text-muted);text-decoration:none}.kb__toc a:hover{color:var(--color-accent)}.kb__body h2{font-size:22px;font-weight:700;margin-top:48px;margin-bottom:16px;padding-top:24px;border-top:1px solid var(--color-border-light)}.kb__body h2:first-child{margin-top:0;padding-top:0;border-top:none}.kb__body h3{font-size:17px;font-weight:600;margin-top:32px;margin-bottom:12px}.kb__body p{font-size:15px;line-height:1.75;color:var(--color-text-muted);margin-bottom:16px}.kb__body ul,.kb__body ol{padding-left:24px;margin-bottom:16px}.kb__body li{font-size:15px;line-height:1.7;color:var(--color-text-muted);margin-bottom:6px}.kb__body strong{color:var(--color-text)}.kb__body pre{background:var(--color-bg-alt);border:1px solid var(--color-border);border-radius:8px;padding:16px 20px;overflow-x:auto;margin-bottom:20px;font-size:13px;line-height:1.6}.kb__body code{font-family:SF Mono,Fira Code,Consolas,monospace;font-size:13px}.kb__body p code,.kb__body li code{background:var(--color-bg-alt);border:1px solid var(--color-border);border-radius:4px;padding:2px 6px;font-size:.88em}.kb__info,.kb__warning,.kb__tip{border-radius:8px;padding:16px 20px;margin-bottom:20px;font-size:14px;line-height:1.6}.kb__info{background:#2563eb10;border-left:3px solid #2563eb;color:var(--color-text-muted)}.kb__warning{background:#dc262610;border-left:3px solid #dc2626;color:var(--color-text-muted)}.kb__tip{background:#16a34a10;border-left:3px solid #16a34a;color:var(--color-text-muted)}.kb__cta{background:var(--color-bg-card);border:2px solid var(--color-accent);border-radius:12px;padding:32px;margin-top:48px;text-align:center}.kb__cta h2{font-size:20px;margin:0 0 12px;padding:0;border:none}.kb__cta p{font-size:15px;color:var(--color-text-muted);margin-bottom:20px}.kb__cta-btn{display:inline-block;padding:14px 32px;background:var(--color-accent);color:#fff;border-radius:10px;font-weight:700;font-size:16px;text-decoration:none;transition:background var(--transition),transform .1s}.kb__cta-btn:hover{background:var(--color-accent-hover);color:#fff;transform:translateY(-1px)}.kb__cta-sub{font-size:13px;color:var(--color-text-dim);margin-top:12px}.kb__author{display:flex;gap:16px;align-items:center;padding:24px;margin-top:40px;background:var(--color-bg-alt);border-radius:12px}.kb__author-avatar{width:56px;height:56px;border-radius:50%;background:var(--color-accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px;flex-shrink:0}.kb__author-info h3{font-size:15px;margin:0 0 4px}.kb__author-info p{font-size:13px;color:var(--color-text-dim);margin:0;line-height:1.5}.kb__related{margin-top:40px;padding-top:32px;border-top:1px solid var(--color-border)}.kb__related h2{font-size:18px;margin:0 0 16px;padding:0;border:none}.kb__related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.kb__related-card{display:block;padding:16px;border:1px solid var(--color-border);border-radius:8px;text-decoration:none;color:inherit;transition:border-color .3s}.kb__related-card:hover{border-color:var(--color-accent)}.kb__related-card strong{font-size:14px;display:block;margin-bottom:4px}.kb__related-card span{font-size:12px;color:var(--color-text-dim)}.kb-index{max-width:900px;margin:0 auto;padding:100px 24px 60px}.kb-index h1{font-size:clamp(28px,4vw,40px);font-weight:700;margin-bottom:12px}.kb-index__lead{font-size:18px;color:var(--color-text-muted);line-height:1.7;margin-bottom:40px}.kb-index__section{margin-bottom:40px}.kb-index__section h2{font-size:18px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--color-text-dim);margin-bottom:16px;padding-bottom:8px;border-bottom:1px solid var(--color-border)}.kb-index__grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.kb-index__card{display:block;padding:20px;border:1px solid var(--color-border);border-radius:10px;text-decoration:none;color:inherit;transition:border-color .3s,transform .1s}.kb-index__card:hover{border-color:var(--color-accent);transform:translateY(-2px)}.kb-index__card h3{font-size:15px;font-weight:600;margin-bottom:6px;line-height:1.4}.kb-index__card p{font-size:13px;color:var(--color-text-dim);line-height:1.5;margin:0}.kb-index__card-price{display:inline-block;font-size:12px;font-weight:600;color:var(--color-accent);margin-top:8px}@media(max-width:768px){.kb,.kb-index{padding:80px 16px 40px}.kb__author{flex-direction:column;text-align:center}.kb__related-grid{grid-template-columns:1fr}}