html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.stage {
  position: relative;
  overflow: hidden;
}

.trigger {
  border: 0;
  border-radius: 999px;
  padding: 12px 24px;
  font-family: inherit;
  font-weight: 600;
  font-size: clamp(13px, 4vmin, 16px);
  line-height: 1;
  color: #17141a;
  background: #fff7e6;
  cursor: pointer;
}

.panel {
  box-sizing: border-box;
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: min(64vw, 200px);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #fff7e6;
  color: #17141a;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  transform: translateX(-100%);
  transition: transform 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.panel__title {
  margin: 0;
  font-weight: 600;
  font-size: 14px;
  line-height: 1.2;
}

.panel__row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(23, 20, 26, 0.1);
  font-weight: 500;
  font-size: 11px;
  line-height: 1.4;
}

.stage.is-open .panel {
  transform: translateX(0);
}

.panel.is-demo {
  animation-name: panel-loop;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
}

@keyframes panel-loop {
  0%, 100% {
    transform: translateX(-100%);
  }
  18%, 72% {
    transform: translateX(0);
  }
  90% {
    transform: translateX(-100%);
  }
}
@media (max-width: 340px) {
  .panel {
    width: 78vw;
    padding: 16px 12px;
    gap: 8px;
  }
  .trigger {
    padding: 8px 16px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .panel {
    transition: none;
  }
  .panel.is-demo {
    animation: none;
    transform: translateX(0);
    opacity: 0.96;
  }
}