:root {
  color-scheme: dark;
  font-family: "Courier New", monospace;
  background: #0b2526;
  color: #ecf3e7;
  font-synthesis: none;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  background: radial-gradient(ellipse at 50% 61%, #183f39 0, #0b2526 57%);
}
::selection { background: #f5a150; color: #0b2526; }
header, footer { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
header { padding: 1.8rem 2.5rem; }
.wordmark { font-size: 1rem; letter-spacing: .08em; }
.pond-number { font-size: .875rem; color: #a0bbb0; }
main { flex: 1; width: 100%; padding: 1.4rem 1.25rem 2rem; text-align: center; }
.eyebrow { margin: 0 0 1.15rem; color: #b2c8bd; font-size: .875rem; letter-spacing: .08em; }
h1 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(2.5rem, 4.8vw, 4.7rem); font-weight: normal; line-height: 1.1; letter-spacing: -.045em; }
h1 em { font-weight: normal; color: #bbd7b5; }
.patience { margin: 1.15rem 0 0; font-size: .875rem; color: #aac2b5; line-height: 1.5; }
.pond { position: relative; width: min(100%, 35rem); margin: .5rem auto 0; padding-bottom: 2.75rem; }
.duck { position: relative; z-index: 1; display: block; width: min(82%, clamp(13rem, 33svh, 25rem)); margin: auto; border-radius: 50%; text-decoration: none; color: #0b2526; -webkit-tap-highlight-color: transparent; }
.duck img { display: block; width: 100%; height: auto; aspect-ratio: 1; object-fit: contain; animation: float 5s ease-in-out infinite; transition: filter .3s ease; }
.duck:hover img { filter: brightness(1.08); }
.duck:focus-visible { outline: 2px dashed #f5a150; outline-offset: .25rem; }
.duck-secret { position: absolute; left: 50%; bottom: 1rem; transform: translate(-50%, .5rem); padding: .8rem 1rem; border-radius: 2rem; background: #deecd4; width: max-content; max-width: calc(100vw - 3rem); font-size: .875rem; line-height: 1.4; opacity: 0; transition: opacity .25s ease, transform .25s ease; }
.duck:hover .duck-secret, .duck:focus-visible .duck-secret { opacity: 1; transform: translate(-50%, 0); }
.ripples { position: absolute; left: 50%; top: 65%; width: 86%; height: 23%; transform: translate(-50%, -50%); }
.ripples span { position: absolute; inset: 0; border: 1px solid #4b7669; border-radius: 50%; opacity: .5; }
.ripples span:nth-child(2) { inset: -22% -9%; opacity: .3; }
.ripples span:nth-child(3) { inset: -46% -20%; opacity: .15; }
.pond-caption { position: absolute; bottom: 1rem; left: 0; right: 0; font-size: .75rem; color: #92b0a1; letter-spacing: .03em; }
.instruction { margin: .5rem 0 0; font-size: .875rem; color: #c9d8c8; line-height: 1.5; }
footer { padding: 1.3rem 2.5rem; font-size: .75rem; color: #a0bbb0; line-height: 1.6; }
@keyframes float { 0%, 100% { transform: translateY(0) rotate(-2deg); } 50% { transform: translateY(-.7rem) rotate(2deg); } }
@media (max-width: 600px) {
  header { padding: 1.25rem; }
  main { padding-top: 2rem; }
  h1 { font-size: clamp(2.35rem, 8vw, 3.1rem); }
  .eyebrow { letter-spacing: .02em; }
  .pond { margin-top: 1rem; }
  .duck { width: 90%; }
  .ripples { width: 68%; }
  footer { justify-content: center; flex-direction: column; padding: 1.25rem; gap: .3rem; }
}
@media (hover: none) { .duck-secret { opacity: 1; transform: translate(-50%, 0); } }
@media (prefers-reduced-motion: reduce) { .duck img { animation: none; } .duck img, .duck-secret { transition: none; } }