.sr-only{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}

.muted{color:var(--muted)}

.icon{width:22px;height:22px;display:inline-block}
.icon--sm{width:13px;height:13px;display:inline-block}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:clamp(2px,.6vw,4px);
  min-height:clamp(36px,2.8vw,40px);
  max-width:100%;
  min-width:0;
  border-radius:999px;
  padding:clamp(2px,.8vw,4px) clamp(2px,.1vw,4px);
  font-size:clamp(12px,.25vw + 11.2px,14px);
  line-height:1;
  font-weight:800;
  border:1px solid transparent;
  cursor:pointer;
  white-space:nowrap;
  user-select:none;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease,background .2s ease;
}

.btn .icon,
.btn .icon--sm{flex:0 0 auto}

.btn > span{
  min-width:0;
  display:block;
  white-space:nowrap;
}

.btn--primary{
  background:linear-gradient(180deg,#2f8ff0 0%,#1f78dc 100%);
  color:#fff;
  border-color:rgba(20,90,175,.18);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.16),
    0 8px 16px rgba(31,99,190,.18);
}

.btn--primary:hover{
  background:linear-gradient(180deg,#46a0fb 0%,#2384e8 100%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.18),
    0 10px 18px rgba(31,99,190,.22);
  transform:translateY(-1px);
}

.btn--primary:active{
  filter:brightness(.96);
  transform:translateY(0);
}

.btn--ghost{
  background:linear-gradient(180deg,#eef2f7 0%,#e6ebf2 100%);
  border-color:rgba(2,6,23,.08);
  color:rgba(2,6,23,.45);
  cursor:not-allowed;
  box-shadow:inset 0 1px 0 rgba(255,255,255,.68);
}

.back-to-top{
  position:fixed;
  right:clamp(12px,1.4vw,22px);
  bottom:clamp(14px,2vw,26px);
  width:34px;
  height:34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border:1px solid rgb(132 231 255);
  border-radius:999px;
  background: linear-gradient(180deg, #62e8b2 0%, #7166e3 100%);
  color: #ffffff;
  box-shadow:0 10px 24px rgba(107,72,18,.16);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transform:translateY(8px);
  transition:opacity .22s ease,visibility .22s ease,transform .22s ease,box-shadow .22s ease,filter .22s ease;
  z-index:120;
}

.back-to-top:hover{
  transform:translateY(-1px);
  box-shadow:0 12px 28px rgba(107,72,18,.2);
}

.back-to-top:active{
  filter:brightness(.98);
  transform:translateY(0);
}

.back-to-top.is-visible{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:translateY(0);
}

.back-to-top__arrow{
  display:block;
  font-size:20px;
  line-height:1;
  font-weight:800;
  transform:translateY(-1px);
}