:root{
  --bg:#ffffff;
  --fg:rgb(66, 66, 66);
  --accent:#2563eb;
}
html,body{height:100%;}
body{
  margin:0;
  font-family: system-ui, -apple-system, Lato, Arial, serif;
  background:var(--bg);
  color:var(--fg);
  display:flex;
  justify-content:center;
}
.container{max-width:720px;padding:32px;text-align:center}
h1{margin:0 0 8px}
button{padding:8px 14px;border-radius:8px;border:1px solid #ddd;background:var(--accent);color:white}
a#exampleLink{align-self:center;color:var(--accent);text-decoration:none}
footer{margin-top:22px;color:#666}
header{align-items:center;margin-bottom:12px}


/* Thank-you links */
.thank-you-section{margin-top:18px;text-align:left;border-radius:10px;padding:16px;background:rgba(0,0,0,0.02)}
.thank-you-section h2{margin:0;font-size:1.15rem}
.thank-you-list{list-style-type:disc;padding:0;display:flex;flex-direction:column;gap:2px;margin-left:20px;}
.thank-you-list a{color:var(--accent);text-decoration:none}
.thank-you-list li{padding:2px 2px;border-radius:6px;background:transparent}
body.dark .thank-you-section{background:rgba(255,255,255,0.02)}

/* Responsive header image */
.heading-image{display:flex;align-items:center;justify-content:center;margin:5px 0}
.heading-image img{display:block;height:auto;max-width:100%;
  /* keep the logo reasonably sized: min 150px, ideal 70vw, max 800px */
  width:clamp(150px,70vw,800px);
}

/* Language switch */
.member-link-wrap{display:flex;align-items:center;gap:12px}
.lang-switch{display:flex;gap:6px}
.lang-btn{padding:6px 8px;border-radius:6px;border:1px solid #ccc;background:#E9E9E9;cursor:pointer}
.lang-btn.active{background:var(--accent);color:#E9E9E9;border-color:transparent}

/* Simple button-link */
.btn-link{display:inline-block;padding:8px 12px;border-radius:8px;background:var(--accent);color:#fff;text-decoration:none;border:1px solid rgba(0,0,0,0.08)}
.btn-link:hover{opacity:0.95}
.btn-link:active{transform:translateY(1px)}