/* === 首屏 Banner === */
.hero {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #CC0000 0%, #FF0000 40%, #FF3333 100%);
  z-index: 0;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url('../images/danao.png') center/contain no-repeat;
  opacity: 0.18;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 0%, rgba(0,0,0,0.3) 100%);
  z-index: 1;
}

.hero-carousel {
  position: relative;
  z-index: 2;
  display: grid;
  text-align: center;
  max-width: var(--max-width-narrow);
  padding: 0 var(--space-lg);
}

.hero-content {
  grid-area: 1 / 1;
  color: #fff;
  opacity: 0;
  transition: opacity 0.8s ease;
  pointer-events: none;
}

.hero-content.active {
  opacity: 1;
  pointer-events: auto;
}

.hero-subtitle {
  font-size: var(--text-lg);
  font-weight: 300;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
  opacity: 0.8;
}

.hero-title {
  font-size: var(--text-hero);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: var(--space-lg);
}

.hero-accent {
  color: var(--color-accent);
}

.hero-desc {
  font-size: var(--text-lg);
  opacity: 0.75;
  line-height: 1.8;
  margin-bottom: var(--space-xl);
}

.hero-btns {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* 向下滚动提示 */
.hero-scroll-hint {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: rgba(255,255,255,0.5);
  font-size: var(--text-xs);
  animation: bounceDown 2s infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(255,255,255,0.5);
  border-bottom: 2px solid rgba(255,255,255,0.5);
  transform: rotate(45deg);
}

@keyframes bounceDown {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}