.not-found-page{background:linear-gradient(135deg,var(--color-primary)0%,#243b5e 100%);min-height:100vh;padding:var(--spacing-5xl)0;align-items:center;display:flex;position:relative;overflow:hidden}.not-found-page:before{content:"";pointer-events:none;background:radial-gradient(circle at 20%,#4a9d9c26 0%,#0000 50%),radial-gradient(circle at 80% 80%,#4a9d9c26 0%,#0000 50%);position:absolute;inset:0}.not-found-page .container{z-index:1;position:relative}.not-found-content{text-align:center;color:#fff;max-width:700px;margin:0 auto}.not-found-number{color:var(--color-accent);margin-bottom:var(--spacing-lg);text-shadow:0 10px 30px #0000004d;font-size:180px;font-weight:700;line-height:1}@media (max-width:768px){.not-found-number{font-size:120px}}.not-found-content h1{font-size:var(--font-size-4xl);color:#fff;margin-bottom:var(--spacing-lg)}@media (max-width:768px){.not-found-content h1{font-size:var(--font-size-3xl)}}.not-found-message{font-size:var(--font-size-xl);color:var(--color-light-gray);margin-bottom:var(--spacing-3xl);line-height:1.7}@media (max-width:768px){.not-found-message{font-size:var(--font-size-lg)}}.not-found-actions{gap:var(--spacing-lg);margin-bottom:var(--spacing-4xl);flex-wrap:wrap;justify-content:center;display:flex}@media (max-width:768px){.not-found-actions{flex-direction:column;align-items:center}.not-found-actions .btn{width:100%;max-width:300px}}.not-found-links{padding-top:var(--spacing-3xl);border-top:1px solid #fff3}.not-found-links h3{color:#fff;font-size:var(--font-size-lg);margin-bottom:var(--spacing-xl);font-weight:600}.quick-links-grid{gap:var(--spacing-lg);grid-template-columns:repeat(4,1fr);display:grid}@media (max-width:768px){.quick-links-grid{grid-template-columns:repeat(2,1fr)}}.quick-links-grid a{color:var(--color-accent);font-size:var(--font-size-base);transition:all var(--transition-base);padding:var(--spacing-sm);border-radius:var(--border-radius-md);text-decoration:none}.quick-links-grid a:hover{color:#fff;background:#ffffff1a}