html{scroll-behavior:smooth}.btn-ghost{border-radius:2rem;padding:.6rem 1.8rem;font-weight:700;transition:transform .2s}.btn-ghost:hover,.btn-ghost:focus{transform:translateY(-2px)}.err-code{font-size:clamp(5rem,18vw,10rem);font-weight:900;line-height:1;letter-spacing:-.04em}.err-main{min-height:70vh;display:flex;align-items:center}@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}.err-icon-wrap{animation:float 3.5s ease-in-out infinite}.quick-link-card{border-radius:1.2rem;padding:1.2rem 1.4rem;height:auto;transition:transform .22s,box-shadow .22s;text-decoration:none !important}.quick-link-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(0,0,0,0.5)}.back-top{position:fixed;bottom:1.5rem;right:1.5rem;z-index:999;border-radius:50%;width:3rem;height:3rem;display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:0 4px 16px rgba(20,184,166,0.4)}