html{scroll-behavior:smooth}.btn-ghost{border-radius:2rem;transition:transform .2s}.btn-ghost:hover{transform:translateY(-2px)}.error-num{font-size:clamp(5rem,18vw,10rem);font-weight:900;line-height:1;letter-spacing:-.04em}.orb-404{position:absolute;width:320px;height:320px;border-radius:50%;background:radial-gradient(circle,color-mix(in srgb,var(--btn-bg) 12%,transparent) 0%,transparent 70%);top:-60px;right:-40px;pointer-events:none;animation:orbFloat 9s ease-in-out infinite}@keyframes orbFloat{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-16px) scale(1.04)}}.card{border-radius:1.2rem;transition:transform .25s,box-shadow .25s}.card:hover{transform:translateY(-4px)}.back-top{position:fixed;bottom:1.5rem;right:1.5rem;z-index:999;border-radius:50%;width:48px;height:48px;display:flex;align-items:center;justify-content:center;font-size:1.2rem}