main{flex:1;max-width:1400px;margin:0 auto;padding:40px 48px 100px;width:100%;display:grid;grid-template-columns:320px 1fr;gap:80px;align-items:start}.sidebar{position:sticky;top:32px;max-height:calc(100vh - 64px);overflow-y:auto;padding-right:8px}.sidebar::-webkit-scrollbar{width:4px}.sidebar::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.1);border-radius:2px}.sidebar-nav{list-style:none;display:flex;flex-direction:column}.sidebar-nav li{border-bottom:1px solid rgba(255,255,255,0.06);transition:border-color 0.2s}.sidebar-nav li:hover,.sidebar-nav li.active{border-bottom-color:#fff}.sidebar-nav a{display:block;padding:20px 4px;font-size:16px;font-weight:400;color:var(--text-primary);letter-spacing:-0.01em;transition:color 0.2s,padding 0.2s;cursor:pointer}.sidebar-nav a:hover{padding-left:10px}.sidebar-nav a.active{font-weight:500}.content{max-width:820px}.content h1{font-size:72px;font-weight:600;letter-spacing:-0.03em;line-height:1.05;margin-bottom:32px}.last-updated{color:var(--text-secondary);font-size:17px;margin-bottom:36px}.intro{font-size:19px;line-height:1.6;color:#E4E8F0;margin-bottom:72px;font-weight:300}.content section{margin-bottom:64px;scroll-margin-top:32px}.content h2{font-size:34px;font-weight:600;letter-spacing:-0.02em;margin-bottom:28px;line-height:1.2}.content h3{font-size:20px;font-weight:600;margin:28px 0 14px;color:#fff}.content p{font-size:17px;line-height:1.65;color:#D5DAE3;margin-bottom:18px;font-weight:300}.content ul{margin:0 0 18px 22px;padding:0}.content li{font-size:17px;line-height:1.65;color:#D5DAE3;margin-bottom:10px;font-weight:300}.content strong{color:#fff;font-weight:600}.content a.inline{color:var(--accent-blue);text-decoration:underline;text-underline-offset:3px}@media (max-width:960px){main{grid-template-columns:1fr;gap:40px;padding:24px 24px 60px}.sidebar{position:static;max-height:none;border:1px solid var(--card-border);border-radius:16px;padding:8px 20px;background:rgba(15,20,35,0.4)}.content h1{font-size:48px}.content h2{font-size:26px}nav{padding:20px 24px;flex-wrap:wrap}.nav-links{display:none}}@media (max-width:600px){.content h1{font-size:38px}.intro{font-size:17px}.nav-cta .btn-ghost{display:none}}