@charset "UTF-8";
@property --k {
  syntax: "<number>";
  initial-value: -1;
  inherits: true;
}



.header_sp a button {
  --m: 1;
  grid-area: 2/1/span 1/span 2;
  position: relative;
  /*margin: 1em;*/
  border: solid 15px transparent;
  padding: 5px 12px;
  border-radius: 100px;
  box-shadow: inset 0 0 1px #23429e;
  background: radial-gradient(#005fb9, 67.5%, #3476da) padding-box, radial-gradient(#a0c2ed, 35%, #a0c2ed00 70%) 50% 0/80% 50% repeat-y;
  color: #f2fdfe;
  /*font: 700 1.5em/1 montserrat, sans-serif;*/
}
#slow:checked ~ button {
  --m: 5 ;
}

@keyframes k {
  0%, 33.3% {
    --k: 1 ;
  }
}
.particle {
  --f: 1;
  --pos-k: max(0, var(--k));
  --neg-k: max(0, -1*var(--k));
  --low-c: min(1, 4*(1 - var(--pos-k)));
  --abs-d: max(var(--neg-k) - .5, .5 - var(--neg-k));
  --mov-f: var(--pos-k);
  display: grid;
  position: absolute;
  left: var(--x);
  top: var(--y);
  rotate: var(--a);
  animation: k calc(var(--m)*1s) linear calc(var(--m)*var(--t, 0)*1s) infinite;
}
@supports (scale: sqrt(4)) {
  .particle {
    --mov-f: sqrt(var(--pos-k)) ;
  }
}
.particle::before, .particle::after {
  grid-area: 1/1;
  width: 0.75em;
  aspect-ratio: 1;
}
.particle::before {
  --sa: calc(min(1, 1 - 2*min(.5, var(--mov-f)))*45deg);
  border-radius: calc(1.25*min(.8, var(--mov-f))*50%) 50% 50%;
  transform-origin: 0 0;
  translate: calc(var(--mov-f)*var(--d));
  rotate: -45deg;
  scale: var(--f);
  transform: skew(var(--sa), var(--sa));
  opacity: var(--low-c);
  filter: Saturate(var(--low-c));
  background: radial-gradient(at 85% 85%, #bad9fa, #3e66a4 75%);
  content: "";
}
.particle::after {
  translate: -50% -50%;
  scale: calc(var(--f)*(1 - 2*var(--abs-d)));
  text-align: center;
  filter: blur(0.5px);
  content: "✦";
}

[type=checkbox] {
  justify-self: end;
  margin: 5px;
  width: 1em;
  aspect-ratio: 1;
}
[type=checkbox], [type=checkbox] + label {
  align-self: center;
  font: 1.25em orbitron, monospace;
  cursor: pointer;
}




.banner_ys7_b {
  /*font-size: 2rem;
  background: none;
  border: none;
  position: relative;*/
  /* to do, calc arrow-stripes so they repeat nicely on animation loop   */
  /*--padding-block: 1rem;
  --padding-inline: 2rem;*/
  --arrow: 5rem;
  /*--arrow-stripes: .8rem;*/

  padding: var(--padding-block) var(--padding-inline);
  padding-right: calc(var(--padding-inline) + var(--arrow));
  filter: drop-shadow(4px 4px 4px hsl(0 0% 0% / .5));
  color: white;
  border-radius: 999vmax 0 0 999vmax;
  cursor: pointer;
  transition: all 125ms
}
.banner_ys7_b:active {
  scale: .975;
}  
.banner_ys7_b:hover::after{
  animation-play-state: paused;
}
.banner_ys7_b::after{
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  z-index: -1;
  background-color: #005fb9;
  /*background-image: linear-gradient(transparent 50%, hsl(0 0% 0% / .5) 0);*/
  animation: mask-position 5s linear infinite;
  
  --conic-stops: black 0 90deg, #0000 0;
  --linear-stops: #0000 0px, black 1px var(--arrow-stripes), #0000 calc(var(--arrow-stripes) + 1px) calc(var(--arrow-stripes) * 2);
  --mask-image:
    conic-gradient(from 225deg at right, var(--conic-stops)),
    conic-gradient(from 225deg at right, var(--conic-stops)),
    repeating-linear-gradient(-135deg, var(--linear-stops)),
    repeating-linear-gradient(-45deg, var(--linear-stops));
  --mask-position: 0 0, 0 0, 0 0, 0 100%;
  --mask-position-to: 0, 0, -100% 0 , -100% 100%;
  --mask-size: calc(100% - var(--arrow)) 100%, 100%, 200% 50%, 200% 50%;
  --mask-repeat: no-repeat, repeat, repeat-x, repeat-x;

  -webkit-mask-image: var(--mask-image);
  -webkit-mask-position: var(--mask-position);
  -webkit-mask-size: var(--mask-size);
  -webkit-mask-repeat: var(--mask-repeat);
  -webkit-mask-composite: source-over, source-out, source-over, source-over;

  mask-image: var(--mask-image);
  mask-position: var(--mask-position);
  mask-size: var(--mask-size);
  mask-repeat: var(--mask-repeat);
  mask-composite: add, subtract, add, add;
}

@keyframes mask-position {
  to { 
    -webkit-mask-position: var(--mask-position-to);
    mask-position: var(--mask-position-to);
  }
}

@media screen and (max-width:599px){

  .banner_ys7_b{ --arrow: 1rem;  --arrow-stripes: 0.4rem;}
}