.pp-layout{display:grid;gap:var(--space-6);align-items:flex-start}.pp-aside{display:flex;flex-direction:column;gap:var(--space-5);position:sticky;top:calc(var(--header-height) + var(--space-4))}.pp-aside-header{display:flex;flex-direction:column;gap:var(--space-3)}.pp-aside-intro{font-size:var(--font-size-sm)}.pp-toc{display:flex;flex-direction:column;gap:0.4rem}.pp-toc-item{width:100%;text-align:left;border-radius:var(--radius-md);border:1px solid rgba(31,41,55,0.9);background:rgba(15,23,42,0.98);padding:0.55rem 0.75rem;font-size:0.75rem;text-transform:uppercase;letter-spacing:0.14em;color:var(--color-text-muted);transition:background-color var(--transition-base),border-color var(--transition-base),color var(--transition-base),transform var(--transition-fast)}.pp-toc-item:hover{border-color:rgba(99,102,241,0.7);color:var(--color-text);transform:translateY(-1px)}.pp-toc-item.is-active{border-color:rgba(129,140,248,0.85);background:var(--color-primary-soft);color:var(--color-text)}.pp-aside-meta{display:flex;flex-direction:column;gap:var(--space-3);font-size:var(--font-size-xs)}.pp-aside-note{color:var(--color-text-muted)}.pp-content{display:flex;flex-direction:column;gap:var(--space-6)}.pp-section+ .pp-section{border-top:1px solid rgba(31,41,55,0.9);padding-top:var(--space-5);margin-top:var(--space-2)}.pp-section h2{font-size:var(--font-size-xl);margin-bottom:var(--space-3)}.pp-section p{font-size:var(--font-size-sm)}.pp-list{margin-left:1rem;display:flex;flex-direction:column;gap:0.4rem;font-size:var(--font-size-sm);color:var(--color-text-muted);list-style:disc}.pp-list li::marker{color:var(--color-primary)}.pp-highlight{color:var(--color-text);font-weight:500}.pp-link{color:var(--color-primary)}.pp-link:hover{color:var(--color-success)}.pp-cta{margin-top:var(--space-2)}.pp-cta-row{margin-top:var(--space-4);display:flex;flex-wrap:wrap;gap:var(--space-3)}@media(max-width:799px){.pp-layout{grid-template-columns:1fr}.pp-aside{position:static;top:auto;order:-1}}