/* ============================================================
   Animations — 关键帧动画与过渡效果
   ============================================================ */

/* === 淡入上浮 === */
@keyframes v2-fade-in-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.v2-animate-fade-in-up {
  animation: v2-fade-in-up 0.6s ease both;
}

@keyframes v2-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.v2-animate-fade-in {
  animation: v2-fade-in 0.6s ease both;
}

/* === 缩放弹入 === */
@keyframes v2-scale-in {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.v2-animate-scale-in {
  animation: v2-scale-in 0.5s var(--transition-spring) both;
}

/* === 柔和脉冲 === */
@keyframes v2-pulse-soft {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 107, 74, 0.4); }
  50% { box-shadow: 0 0 0 12px rgba(255, 107, 74, 0); }
}

/* === 浮动（上下） === */
@keyframes v2-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.v2-animate-float {
  animation: v2-float 3s ease-in-out infinite;
}

/* === 浮动延迟变体 === */
.v2-animate-float--delay-1 { animation-delay: 0.5s; }
.v2-animate-float--delay-2 { animation-delay: 1s; }
.v2-animate-float--delay-3 { animation-delay: 1.5s; }

/* === 数字滚动 === */
@keyframes v2-count-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.v2-animate-count {
  animation: v2-count-up 0.8s ease both;
}

/* === 几何图形浮动（Hero 背景） === */
@keyframes v2-float-geo-1 {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(30px, -30px) rotate(5deg); }
  66% { transform: translate(-10px, 20px) rotate(-3deg); }
}

@keyframes v2-float-geo-2 {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(-40px, -20px) rotate(-8deg); }
  66% { transform: translate(20px, 10px) rotate(4deg); }
}

@keyframes v2-float-geo-3 {
  0%, 100% { transform: translate(0, 0) rotate(0deg) scale(1); }
  50% { transform: translate(-20px, 30px) rotate(6deg) scale(1.05); }
}

/* === 淡入滚动触发（配合 Intersection Observer） === */
.v2-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.v2-reveal--visible {
  opacity: 1;
  transform: none;
}

/* === 卡片 hover 效果 === */
.v2-hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.v2-hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* === 线条擦入效果 === */
@keyframes v2-line-in {
  from { width: 0; }
  to { width: 60px; }
}

.v2-animate-divider {
  animation: v2-line-in 0.8s ease both;
}

/* === 旋转 === */
@keyframes v2-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* === 贝塞尔弹跳 === */
@keyframes v2-bounce {
  0%, 100% { transform: translateY(0); }
  30% { transform: translateY(-16px); }
  50% { transform: translateY(4px); }
  70% { transform: translateY(-8px); }
}

/* ===== ScrollReveal 覆盖（增强现有 scrollreveal） ===== */
.sr .v2-reveal {
  visibility: hidden;
}