/* public/css/site.css (global minimal) */
:root{
  --rx-green:#1a841a; --rx-text:#222; --rx-bg:#f9f9f9; --rx-white:#fff;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:Rubik,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--rx-text);background:#fff}
img{max-width:100%;display:block}
.rx-container{max-width:1200px;margin:0 auto;padding:0 16px}

.rx-scrolltop{
  position:fixed;right:16px;bottom:16px;z-index:999;
  width:44px;height:44px;border-radius:999px;border:none;
  background:var(--rx-green);color:#fff;font-weight:700;cursor:pointer;
  box-shadow:0 6px 18px rgba(0,0,0,.18);opacity:0;transform:translateY(8px);
  transition:opacity .2s ease, transform .2s ease;
}
.rx-scrolltop.is-visible{opacity:1;transform:translateY(0)}