:root {
  color: #2c241c;
  background: #f2eadc;
  font-family: "Noto Serif SC", "Songti SC", serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.68), transparent 42%),
    #f2eadc;
}

.page-shell {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 20px 42px;
  overflow: hidden;
}

.eyebrow {
  margin: 0 0 10px;
  color: #9a7650;
  font-family: Arial, sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.28em;
}

h1 {
  margin: 0;
  color: #3b2b1d;
  font-size: clamp(30px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: 0.08em;
}

.intro {
  margin: 12px 0 32px;
  color: #806d5c;
  font-size: 15px;
  letter-spacing: 0.08em;
}

.slider-stage {
  position: relative;
  width: min(528px, 92vw);
  aspect-ratio: 528 / 472;
  user-select: none;
}

.slider-background {
  display: block;
  width: 100%;
  height: auto;
  -webkit-user-drag: none;
  user-drag: none;
}

.slider-thumb {
  position: absolute;
  top: var(--thumb-top, 255px);
  left: var(--thumb-left, 76px);
  display: block;
  width: var(--thumb-width, 75px);
  height: auto;
  touch-action: none;
  -webkit-user-drag: none;
  user-drag: none;
  cursor: grab;
  filter: drop-shadow(0 7px 5px rgba(63, 42, 25, 0.22));
  transition: filter 160ms ease;
}

.slider-thumb:hover,
.slider-thumb:focus-visible {
  filter: drop-shadow(0 9px 7px rgba(63, 42, 25, 0.3));
  outline: none;
}

.slider-thumb.is-dragging {
  cursor: grabbing;
  filter: drop-shadow(0 4px 3px rgba(63, 42, 25, 0.2));
}

.slider-status {
  min-height: 1.5em;
  margin: 18px 0 0;
  color: #947b62;
  font-size: 13px;
  letter-spacing: 0.06em;
}

.disclaimer {
  margin: 8px 0 0;
  color: #b09b85;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  font-size: 11px;
  letter-spacing: 0.04em;
}

@media (max-width: 560px) {
  .page-shell {
    justify-content: flex-start;
    padding-top: 14vh;
  }

  .intro {
    margin-bottom: 20px;
  }
}