/* SUPERMATHS — invitation à installer l'application */
.ia-card{position:fixed;left:50%;bottom:16px;z-index:360000;width:min(560px,calc(100vw - 24px));display:flex;align-items:center;gap:12px;padding:14px 40px 14px 14px;
  background:#fff;border:1px solid #d9eeec;border-radius:20px;box-shadow:0 22px 50px rgba(13,50,66,.22);color:#13283a;
  transform:translate(-50%,140%);transition:transform .45s cubic-bezier(.2,.8,.2,1)}
.ia-card.open{transform:translate(-50%,0)}
.ia-logo{flex:0 0 52px;width:52px;height:52px;border-radius:15px;object-fit:cover;display:grid;place-items:center;font-size:26px;background:linear-gradient(135deg,#e6f7f5,#fff0f5);box-shadow:0 6px 14px rgba(25,184,174,.2)}
.ia-tx{flex:1;min-width:0}.ia-tx b{display:block;font-size:14.5px}.ia-tx span{display:block;margin-top:3px;font-size:12.5px;color:#5d7482;line-height:1.45}
.ia-share{display:inline!important;font-weight:900;color:#0f6fd8!important}
.ia-act{display:flex;flex-direction:column;gap:6px;flex:0 0 auto}
.ia-go{border:0;border-radius:999px;padding:10px 16px;background:linear-gradient(135deg,#19b8ae,#0d8a83);color:#fff;font:inherit;font-weight:800;font-size:13.5px;cursor:pointer;box-shadow:0 8px 18px rgba(25,184,174,.3)}
.ia-later{border:0;border-radius:999px;padding:7px 12px;background:#eef4f5;color:#4f6976;font:inherit;font-weight:700;font-size:12px;cursor:pointer}
.ia-x{position:absolute;top:8px;right:8px;width:26px;height:26px;border:0;border-radius:8px;background:#f1f5f6;font-size:16px;color:#5d7482;cursor:pointer}
@media(max-width:480px){.ia-card{flex-wrap:wrap}.ia-act{flex-direction:row;width:100%}.ia-act button{flex:1}}
@media(prefers-reduced-motion:reduce){.ia-card{transition:none}}