/* ===============================================================
   hero.css — 首屏 Hero (展览海报风格)
   =============================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* 纹理叠加 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(168, 133, 61, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(168, 133, 61, 0.04) 0%, transparent 50%);
  pointer-events: none;
}

.hero__frame {
  text-align: center;
  padding: var(--space-3xl) var(--space-2xl);
  border: var(--rule-thin);
  position: relative;
  z-index: 2;
  max-width: 700px;
  width: 90%;
}

/* 画框四角装饰 */
.hero__frame::before,
.hero__frame::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border-color: var(--gold);
  border-style: solid;
}
.hero__frame::before {
  top: -1px;
  left: -1px;
  border-width: 2px 0 0 2px;
}
.hero__frame::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 2px 2px 0;
}

.hero__ornament {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.hero__ornament-line {
  width: 48px;
  height: 1px;
  background: var(--gold-border);
}

.hero__ornament-dot {
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
}

.hero__number {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--gold);
  margin-bottom: var(--space-md);
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.06em;
  line-height: 1.25;
  margin-bottom: var(--space-md);
}

.hero__title-line {
  display: block;
}

.hero__subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto var(--space-xl);
  line-height: 1.8;
  letter-spacing: 0.02em;
}

.hero__divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.hero__divider-line {
  width: 80px;
  height: 1px;
  background: var(--gold-border);
}

.hero__divider-icon {
  color: var(--gold);
  font-size: 0.6rem;
}

.hero__meta {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  font-family: var(--font-sans);
}

/* 向下滚动指示器 */
.hero__scroll {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  opacity: 0.5;
  transition: opacity var(--duration-base);
  z-index: 2;
}

.hero__scroll:hover {
  opacity: 1;
}

.hero__scroll-text {
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--text-muted);
}

.hero__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

@media (max-width: 480px) {
  .hero__frame {
    padding: var(--space-xl) var(--space-md);
  }

  .hero__meta {
    flex-direction: column;
    gap: var(--space-sm);
    align-items: center;
  }
}