/* KATA Warp Tunnel — KATAYABURI. Twelve rings, zero script. */
.k-warp{position:relative;width:100%;background:var(--k-zinc-950);border-radius:14px;overflow:hidden;height:250px;perspective:340px;font-family:var(--k-font)}
.k-warp-in{position:absolute;inset:0;transform-style:preserve-3d}
.k-warp-r{position:absolute;left:50%;top:50%;width:300px;height:300px;margin:-150px 0 0 -150px;border:2px solid var(--k-zinc-700);border-radius:50%;opacity:0;animation:k-warp-fly 5s linear infinite}
.k-warp-r:nth-child(3n){border-color:var(--k-accent)}
@keyframes k-warp-fly{0%{transform:translateZ(-320px);opacity:0}18%{opacity:.9}100%{transform:translateZ(190px);opacity:0}}
.k-warp p{position:relative;z-index:2;text-align:center;padding-top:106px;font-size:14px;font-weight:600;color:var(--k-on-color);letter-spacing:.14em}
@media (prefers-reduced-motion:reduce){.k-warp-r{animation:none;opacity:.25}.k-warp-r:nth-child(odd){display:none}}