/* 首页样式 */

.landing-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  position: relative;
}

/* 装饰印章 */
.landing-seal {
  width: 64px;
  height: 64px;
  margin-bottom: var(--space-xl);
  opacity: 0;
}

.landing-seal.visible {
  animation: stampDown 0.8s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.landing-seal svg {
  width: 100%;
  height: 100%;
}

/* 标题 */
.landing-title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: var(--ink-dark);
  line-height: 1.35;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-md);
  opacity: 0;
}

.landing-title.visible {
  animation: fadeInUp 0.7s ease 0.2s forwards;
}

.landing-title .char-block {
  display: inline-block;
}

/* 副标题 */
.landing-subtitle {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3xl);
  opacity: 0;
}

.landing-subtitle.visible {
  animation: fadeInUp 0.6s ease 0.5s forwards;
}

/* CTA 按钮 */
.landing-cta {
  position: relative;
  padding: 16px 48px;
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  letter-spacing: 0.1em;
  color: var(--rice-paper);
  background: var(--ink-dark);
  border-radius: var(--radius-full);
  box-shadow: 0 4px 20px rgba(26, 26, 26, 0.18);
  transition: all var(--transition-base);
  overflow: hidden;
  opacity: 0;
}

.landing-cta.visible {
  animation: fadeInUp 0.6s ease 0.8s forwards;
}

/* 水墨扩散 hover/active */
.landing-cta::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
}

.landing-cta:active::after {
  width: 400px;
  height: 400px;
}

.landing-cta:active {
  transform: scale(0.96);
  box-shadow: 0 2px 8px rgba(26, 26, 26, 0.12);
}

/* 底部提示 */
.landing-footer {
  font-family: var(--font-display);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  letter-spacing: 0.06em;
  opacity: 0;
}

.landing-footer.visible {
  animation: fadeInUp 0.5s ease 1.1s forwards;
}

/* 背景墨痕装饰 */
.landing-ink-stain {
  position: fixed;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(26, 26, 26, 0.03) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.landing-ink-stain.top-right {
  width: 300px;
  height: 300px;
  top: -80px;
  right: -80px;
}

.landing-ink-stain.bottom-left {
  width: 250px;
  height: 250px;
  bottom: -60px;
  left: -60px;
}

/* 桌面端微调 */
@media (min-width: 768px) {
  .landing-title {
    letter-spacing: 0.1em;
  }
}