/* Shared post-v1 long-page back-to-top control. Geometry mirrors approved Home A0. */
.tf-scroll-top{position:fixed;right:16px;bottom:16px;z-index:62;width:36px;height:36px;border-radius:11px;border:1px solid rgba(32,72,116,.16);background:rgba(236,242,248,.94);backdrop-filter:blur(10px);box-shadow:0 8px 22px rgba(31,57,88,.10);color:#60768c;display:grid;place-items:center;opacity:0;pointer-events:none;transform:translateY(7px);transition:opacity .18s ease,transform .18s ease,color .18s ease,border-color .18s ease;cursor:pointer}
.tf-scroll-top.show{opacity:1;pointer-events:auto;transform:none}.tf-scroll-top:hover{color:#2f6fe8;border-color:rgba(47,111,232,.22)}.tf-scroll-top svg{width:14px;height:14px}
@media(max-width:760px){.tf-scroll-top{display:none}}
@media(prefers-reduced-motion:reduce){.tf-scroll-top{transition:none}}