/* ── Hero 区域 ── */
.hero {
  position: relative;
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

/* 背景图 */
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  /* 背景图未就绪时的占位色 */
  background: linear-gradient(135deg, #F5EDE6 0%, #EDD8D0 50%, #E8C8C0 100%);
}

.hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--color-overlay);
}

/* 主内容 */
.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.hero__title {
  font-family: var(--font-brand);
  font-size: clamp(52px, 6vw, 76px);
  font-weight: 300;
  letter-spacing: 0.18em;
  color: #2A1A14;
  line-height: 1;
  text-shadow: 0 1px 12px rgba(255,255,255,0.5);
}

.hero__tagline {
  font-family: var(--font-zh);
  font-size: clamp(14px, 1.8vw, 18px);
  font-weight: 300;
  letter-spacing: 0.12em;
  color: rgba(42, 26, 20, 0.78);
  margin-top: var(--space-xs);
  display: flex;
  align-items: center;
  gap: 14px;
}

.hero__tagline::before,
.hero__tagline::after {
  content: '';
  display: block;
  width: 36px;
  height: 1px;
  background: currentColor;
  opacity: 0.45;
  flex-shrink: 0;
}

/* 下载按钮 */
.hero__buttons {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.hero__btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  transition: background 0.22s, color 0.22s, border-color 0.22s,
              box-shadow 0.22s, transform 0.22s;
}

.hero__btn:hover {
  transform: translateY(-2px);
}

/* 默认：App Store 玫瑰红玻璃（主），Android 透明玻璃（次） */
.hero__btn--appstore {
  background: rgba(200, 80, 106, 0.82);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 4px 20px rgba(200, 80, 106, 0.28);
}

.hero__btn--android {
  background: rgba(255, 255, 255, 0.42);
  color: var(--color-accent);
  border-color: rgba(255, 255, 255, 0.65);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

/* 悬浮 Android：Android 变玫瑰红玻璃，App Store 退为透明玻璃 */
.hero__btn--android:hover {
  background: rgba(200, 80, 106, 0.82);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 4px 20px rgba(200, 80, 106, 0.28);
}

.hero__buttons:has(.hero__btn--android:hover) .hero__btn--appstore {
  background: rgba(255, 255, 255, 0.42);
  color: var(--color-accent);
  border-color: rgba(255, 255, 255, 0.65);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

/* 底部栏 */
.hero__bottom {
  position: absolute;
  bottom: var(--space-md);
  left: 0;
  right: 0;
  z-index: 1;
  display: flex;
  justify-content: center;
}

.hero__brand {
  font-family: var(--font-brand);
  font-size: 20px;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: rgba(42, 26, 20, 0.7);
}

.hero__scroll {
  font-family: var(--font-zh);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(42, 26, 20, 0.5);
}

.hero__social {
  display: flex;
  gap: var(--space-sm);
}

.hero__social-link {
  font-family: var(--font-zh);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(42, 26, 20, 0.55);
  transition: color 0.2s;
}

.hero__social-link:hover {
  color: #2A1A14;
}