.not-found-page{background:var(--hero-gradient);justify-content:center;align-items:center;min-height:calc(100vh - 180px);padding:48px 20px 72px;display:flex}.not-found-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-xl);width:100%;max-width:560px;box-shadow:0 12px 40px var(--color-shadow);text-align:center;padding:40px 32px}.not-found-code{letter-spacing:-.04em;background:var(--brand-gradient);color:#0000;-webkit-background-clip:text;background-clip:text;margin-bottom:8px;font-size:clamp(4rem,14vw,5.5rem);font-weight:800;line-height:1}.not-found-card h1{color:var(--color-text);margin-bottom:10px;font-size:1.65rem;font-weight:700}.not-found-lead{color:var(--color-text-muted);margin-bottom:28px;font-size:1rem;line-height:1.65}.not-found-actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-bottom:32px;display:flex}.not-found-btn{justify-content:center;align-items:center;min-width:160px;padding:12px 20px;font-size:.95rem;display:inline-flex}.not-found-section-label{text-transform:uppercase;letter-spacing:.08em;color:var(--color-text-muted);margin-bottom:12px;font-size:.78rem;font-weight:600}.not-found-quick{border-top:1px solid var(--color-border);margin-bottom:24px;padding-top:24px}.not-found-quick-list{grid-template-columns:repeat(2,1fr);gap:10px;margin:0;padding:0;list-style:none;display:grid}.not-found-quick-link{border:1px solid var(--color-border);background:var(--color-muted-surface);color:var(--color-text);border-radius:10px;justify-content:center;align-items:center;gap:8px;padding:10px 12px;font-size:.9rem;font-weight:500;transition:border-color .2s,background .2s;display:flex}.not-found-quick-link:hover{border-color:var(--color-accent);background:var(--color-accent-tint);color:var(--color-accent)}.not-found-quick-link svg{flex-shrink:0;font-size:1rem}.not-found-popular{text-align:left}.not-found-popular-list{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.not-found-popular-list a{border:1px solid var(--color-border);color:var(--color-text-muted);border-radius:999px;padding:6px 12px;font-size:.85rem;transition:border-color .2s,color .2s,background .2s;display:inline-block}.not-found-popular-list a:hover{border-color:var(--color-accent);color:var(--color-accent);background:var(--color-accent-tint)}@media (max-width:480px){.not-found-card{padding:32px 20px}.not-found-actions{flex-direction:column}.not-found-btn{width:100%}.not-found-quick-list{grid-template-columns:1fr}}