html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: #f3f4f6;
}
#splash {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: #f3f4f6;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  transition: opacity 0.25s;
}
#splash.hidden { opacity: 0; pointer-events: none; }
.s-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px 48px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08), 0 8px 32px rgba(0,0,0,0.07);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 320px;
  max-width: 90vw;
  text-align: center;
}
.s-brand { font-size: 20px; font-weight: 700; color: #111827; margin-top: 4px; }
.s-sub   { font-size: 13px; color: #6b7280; margin-top: -2px; }
.s-spinner {
  width: 28px; height: 28px;
  border: 2.5px solid #e5e7eb;
  border-top-color: #01696F;
  border-radius: 50%;
  animation: s-spin 0.7s linear infinite;
  margin-top: 6px;
}
.s-hint { font-size: 12px; color: #9ca3af; }
.s-lock {
  width: 52px; height: 52px;
  background: #ecfdf5;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.s-title { font-size: 16px; font-weight: 600; color: #111827; }
.s-desc  { font-size: 13px; color: #6b7280; line-height: 1.6; }
.s-btn {
  display: block; width: 100%; margin-top: 6px;
  padding: 12px; background: #01696F; color: #fff;
  border: none; border-radius: 10px;
  font-size: 14px; font-weight: 600; cursor: pointer;
  text-decoration: none; font-family: inherit;
}
.s-btn:hover { background: #015458; }
.s-count { font-size: 12px; color: #9ca3af; }
@keyframes s-spin { to { transform: rotate(360deg); } }
.s-hidden { display: none !important; }