.kei-scroll-top{position:fixed;right:clamp(18px,2.2vw,34px);bottom:clamp(18px,2.2vw,34px);z-index:900;display:flex;align-items:center;gap:9px;min-width:48px;height:48px;padding:0 15px;border:1px solid rgba(110,194,239,.24);border-radius:14px;background:rgba(6,20,34,.84);color:#eefaff;box-shadow:0 16px 45px rgba(0,0,0,.22);backdrop-filter:blur(16px);font:700 12px/1 Manrope,Arial,sans-serif;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(14px);transition:.22s ease}.kei-scroll-top span{font-size:20px;line-height:1}.kei-scroll-top small{font:inherit}.kei-scroll-top.is-visible{opacity:1;visibility:visible;transform:none}.kei-scroll-top:hover{transform:translateY(-2px);border-color:rgba(66,203,224,.5)}html[data-theme="light"] .kei-scroll-top{background:rgba(255,255,255,.9);color:#0b2032;border-color:rgba(15,75,115,.14);box-shadow:0 16px 42px rgba(23,63,90,.13)}@media(max-width:640px){.kei-scroll-top{width:46px;min-width:46px;height:46px;padding:0;justify-content:center;border-radius:50%}.kei-scroll-top small{display:none}}