*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  overflow: hidden;
}

.idh-splash {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 48px;
  width: 100%;
  height: 100vh;
  min-height: 100dvh;

  background-color: #265F56;
  background-image:
    radial-gradient(ellipse 80% 60% at 0% 100%,   rgba(236,229,219,.55) 0%, transparent 65%),
    radial-gradient(ellipse 55% 55% at 5% 45%,    rgba(234,167,200,.70) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 50% 110%,  rgba(235,194,26, .90) 0%, transparent 55%),
    radial-gradient(ellipse 55% 60% at 100% 100%, rgba(199,64, 63, .90) 0%, transparent 60%),
    radial-gradient(ellipse 50% 55% at 80% 55%,   rgba(235,119,60, .85) 0%, transparent 55%),
    radial-gradient(ellipse 50% 45% at 40% 10%,   rgba(158,215,224,.80) 0%, transparent 55%),
    radial-gradient(ellipse 45% 50% at 0%  0%,    rgba(128,139,195,.75) 0%, transparent 60%),
    linear-gradient(160deg, #265F56 0%, #1a3d38 100%);
}

.idh-splash__logo-wrap {
  position: relative;
  width: min(520px, 80vw);
  display: flex;
  align-items: center;
  justify-content: center;

  backdrop-filter: blur(20px) brightness(1.08);
  -webkit-backdrop-filter: blur(20px) brightness(1.08);

  background: rgba(255,255,255,.06);
  border-radius: 16px;
  padding: 40px 48px;

  box-shadow:
    inset 0 2px 2px rgba(255,255,255,.18),
    inset 0 -1px 1px rgba(0,0,0,.12),
    0 8px 32px rgba(0,0,0,.18);

  border: 1px solid rgba(255,255,255,.15);

  animation: idh-fade-up .9s cubic-bezier(.22,1,.36,1) both;
}

.idh-splash__logo-wrap svg {
  width: 100%;
  height: auto;
  display: block;
  opacity: .92;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,.25));
}

.idh-splash__cta {
  text-align: center;
  animation: idh-fade-up .9s .2s cubic-bezier(.22,1,.36,1) both;
}

.idh-splash__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #ECE5DB;
  font-size: clamp(14px, 2vw, 17px);
  font-weight: 400;
  letter-spacing: .02em;
  text-decoration: none;
  border-bottom: 1px solid rgba(236,229,219,.45);
  padding-bottom: 3px;
  transition: border-color .25s ease, opacity .25s ease;
  opacity: .85;
}

.idh-splash__link:hover,
.idh-splash__link:focus-visible {
  border-color: #ECE5DB;
  opacity: 1;
  outline: none;
}

.idh-splash__arrow {
  display: inline-block;
  transition: transform .25s ease;
}

.idh-splash__link:hover .idh-splash__arrow {
  transform: translateX(4px);
}

@keyframes idh-fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 480px) {
  .idh-splash__logo-wrap {
    padding: 28px 32px;
    border-radius: 12px;
  }
}