.not-found{text-align:center;min-height:100vh;padding:var(--spacing-3xl) var(--spacing-md);flex-direction:column;justify-content:center;align-items:center;display:flex;position:relative;overflow:hidden}.not-found-code{font-family:var(--font-family-heading);font-size:clamp(10rem,28vw,22rem);font-weight:var(--font-weight-black);color:var(--color-primary);opacity:.15;-webkit-user-select:none;user-select:none;pointer-events:none;letter-spacing:var(--letter-spacing-tight);line-height:1;position:absolute;top:50%;left:50%;transform:translate(-50%,-55%)}.not-found-code:after{content:"404";color:var(--color-primary);opacity:.4;filter:blur(40px);position:absolute;inset:0}.not-found-header{align-items:center;gap:var(--spacing-sm);max-width:560px;margin-bottom:var(--spacing-xl);z-index:1;flex-direction:column;display:flex;position:relative}.not-found-title{font-family:var(--font-family-heading);font-size:var(--font-size-5xl);font-weight:var(--font-weight-bold);line-height:var(--line-height-tight);color:var(--color-text-light)}.not-found-desc{font-size:var(--font-size-lg);line-height:var(--line-height-relaxed);color:var(--color-text-secondary);max-width:440px}.not-found .btn{z-index:1;position:relative}.not-found:before{content:"";background:radial-gradient(circle, rgba(var(--color-accent-glow-rgb), .1) 0%, transparent 60%);pointer-events:none;z-index:0;width:800px;height:800px;position:absolute;top:45%;left:50%;transform:translate(-50%,-50%)}@media (max-width:768px){.not-found{min-height:100vh;padding:var(--spacing-xl) var(--spacing-sm)}.not-found-title{font-size:var(--font-size-3xl)}.not-found-header{gap:var(--spacing-sm);margin-bottom:var(--spacing-lg)}}