.not-found-container{min-height:calc(100vh - 80px);padding:var(--spacing-xl)var(--spacing-md);justify-content:center;align-items:center;display:flex}.not-found-panel{width:100%;max-width:520px;padding:var(--spacing-2xl)var(--spacing-xl);background:var(--color-bg-card);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);box-shadow:var(--shadow-light);position:relative}.not-found-panel:before,.not-found-panel:after{content:"";pointer-events:none;border-color:var(--color-border-medium);border-style:solid;position:absolute}.not-found-panel:before{border-width:2px 0 0 2px;border-top-left-radius:14px;width:56px;height:18px;top:-1px;left:-1px}.not-found-panel:after{border-width:2px 0 0 2px;border-top-left-radius:14px;width:18px;height:56px;top:-1px;left:-1px}.not-found-code{letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-muted);margin-bottom:var(--spacing-sm);border:1px solid var(--color-border-light);border-radius:2px;padding:2px 6px;font-family:IBM Plex Mono,JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.6875rem;line-height:1;display:inline-block}.not-found-title{letter-spacing:.02em;margin:0 0 var(--spacing-md);color:var(--color-text-primary);font-size:1.5rem;font-weight:600}.not-found-text{color:var(--color-text-secondary);margin:0 0 var(--spacing-sm);font-size:.9375rem;line-height:1.6}.not-found-meta{color:var(--color-text-muted);margin:0 0 var(--spacing-xl);font-size:.8125rem;line-height:1.6}.not-found-link{align-items:center;gap:var(--spacing-sm);padding:var(--spacing-sm)var(--spacing-md);letter-spacing:.08em;text-transform:uppercase;color:var(--color-text-secondary);border:1px solid var(--color-border-medium);border-radius:var(--radius-sm);transition:color var(--transition-fast),border-color var(--transition-fast),background var(--transition-fast);font-family:IBM Plex Mono,JetBrains Mono,ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.75rem;text-decoration:none;display:inline-flex}.not-found-link:hover{color:var(--color-text-primary);border-color:var(--color-text-secondary);background:var(--color-bg-secondary)}.not-found-link-arrow{font-size:.875rem}