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);
}

@property --sv {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}
.stage {
  --sv: 0;
  position: relative;
  overflow: hidden;
  animation: scroll-sim 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.hero__bg {
  position: absolute;
  inset: -10% -10% -30% -10%;
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255, 247, 230, 0.28), rgba(255, 247, 230, 0));
  transform: translateY(calc(var(--sv) * -18px));
}

.hero__head {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 32px 24px;
  transform: translateY(calc(var(--sv) * -42px));
}

.hero__eyebrow {
  margin: 0;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(255, 247, 230, 0.16);
  color: #fff7e6;
  font-weight: 600;
  font-size: 11px;
  line-height: 1.6;
}

.hero__title {
  margin: 0;
  color: #ffffff;
  font-weight: 700;
  font-size: clamp(20px, 6vmin, 28px);
  line-height: 1.25;
}

.hero__sub {
  margin: 0;
  max-width: 34ch;
  color: rgba(255, 255, 255, 0.78);
  font-weight: 400;
  font-size: 13px;
  line-height: 1.55;
}

.hero__cta {
  margin-top: 8px;
  border: 0;
  border-radius: 999px;
  padding: 12px 24px;
  font-family: inherit;
  font-weight: 600;
  font-size: 13px;
  line-height: 1;
  color: #17141a;
  background: #fff7e6;
  cursor: pointer;
}

@keyframes scroll-sim {
  0%, 8% {
    --sv: 0;
  }
  50% {
    --sv: 1;
  }
  92%, 100% {
    --sv: 0;
  }
}
@media (max-width: 340px) {
  .hero__head {
    padding: 12px 16px;
    gap: 4px;
  }
  .hero__sub {
    max-width: 26ch;
  }
  .hero__cta {
    margin-top: 0;
    padding: 8px 16px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage {
    animation: none;
  }
  .hero__bg, .hero__head {
    transform: none;
  }
}