/* ============================================================
   高端品牌级动态交互增强 (motion.css)
   仅追加动效，不改变原有设计 / 结构 / 文案 / 配色 / 字体
   ============================================================ */

:root {
  --ease-soft: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- 1. 首页环境光背景 (缓慢移动, 柔和蓝光) ---------- */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.7;
  background:
    radial-gradient(46% 50% at 24% 26%, rgba(64,128,255,0.30), transparent 62%),
    radial-gradient(40% 46% at 84% 78%, rgba(22,93,255,0.20), transparent 60%);
  mix-blend-mode: screen;
  animation: heroGlow 21s var(--ease-soft) infinite alternate;
}
.hero-bg::before {
  content: "";
  position: absolute;
  inset: -20% -10%;
  background: radial-gradient(34% 40% at 55% 18%, rgba(120,160,255,0.22), transparent 55%);
  animation: heroGlowB 27s var(--ease-soft) infinite alternate;
}
@keyframes heroGlow {
  from { transform: translate3d(-1.5%, -1%, 0) scale(1); }
  to   { transform: translate3d(2%, 2%, 0) scale(1.14); }
}
@keyframes heroGlowB {
  from { transform: translateX(-4%) rotate(-3deg); opacity: 0.45; }
  to   { transform: translateX(4%) rotate(2deg); opacity: 0.85; }
}
.hero-grid { position: relative; z-index: 1; }

/* ---------- 2. 减少动态偏好：一键关闭全部动画 ---------- */
body.motion-off *,
body.motion-off *::before,
body.motion-off *::after {
  animation: none !important;
  transition: none !important;
}

/* ---------- 3. 首页入场动画 (由 body.hero-anim 触发) ---------- */
body.hero-anim .site-nav                 { animation: navIn 0.8s var(--ease-soft) both; }
body.hero-anim .hero-copy .eyebrow       { animation: riseIn 0.8s 0.18s var(--ease-soft) both; }
body.hero-anim .hero-title               { animation: riseIn 0.9s 0.34s var(--ease-soft) both; }
body.hero-anim .hero-title .gold {
  display: inline-block;
  color: transparent;
  background: linear-gradient(112deg, #F09BC8 8%, #C89BF7 28%, #F2F6FF 44%, #9FC4F8 58%, #6EA8FF 86%);
  background-size: 225% 100%;
  background-position: 0 0;
  -webkit-background-clip: text;
  background-clip: text;
  animation: shineSweep 2.4s 1.28s var(--ease-soft) both;
}
body.hero-anim .hero-tags                { animation: riseIn 0.8s 0.66s var(--ease-soft) both; }
body.hero-anim .hero-desc                { animation: riseIn 0.9s 0.86s var(--ease-soft) both; }
body.hero-anim .hero-actions             { animation: riseIn 0.85s 1.14s var(--ease-soft) both; }
body.hero-anim .hero-photo               { animation: photoIn 1.5s 1.28s var(--ease-soft) both; }
body.hero-anim .hero-photo .hm           { animation: riseIn 0.7s var(--ease-soft) both; }
body.hero-anim .hero-photo .hm:nth-child(1) { animation-delay: 1.66s; }
body.hero-anim .hero-photo .hm:nth-child(2) { animation-delay: 1.8s; }
body.hero-anim .hero-photo .hm:nth-child(3) { animation-delay: 1.94s; }
body.hero-anim .hero-photo .hm:nth-child(4) { animation-delay: 2.08s; }

@keyframes riseIn {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: none; }
}
@keyframes navIn {
  from { opacity: 0; transform: translateY(-16px); }
  to   { opacity: 1; transform: none; }
}
@keyframes photoIn {
  from { opacity: 0; transform: scale(1.04); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes shineSweep {
  0%   { background-position: 130% 0; opacity: 0; }
  10%  { opacity: 1; }
  46%  { background-position: -55% 0; }
  100% { background-position: -55% 0; opacity: 1; }
}

/* ---------- 4. 滚动触发显现 (JS 动态加 .reveal) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.9s var(--ease-soft), transform 0.9s var(--ease-soft);
  will-change: opacity, transform;
}
.reveal.in { opacity: 1; transform: none; }

/* 网格内元素依次交错出现 */
[class*="grid"] > .reveal:nth-child(2) { transition-delay: 0.08s; }
[class*="grid"] > .reveal:nth-child(3) { transition-delay: 0.16s; }
[class*="grid"] > .reveal:nth-child(4) { transition-delay: 0.24s; }
[class*="grid"] > .reveal:nth-child(5) { transition-delay: 0.32s; }
[class*="grid"] > .reveal:nth-child(6) { transition-delay: 0.40s; }

/* ---------- 5. 人物照片：视差 & 悬停光影 (白色环境光) ---------- */
.photo-frame {
  position: relative;
  transition: box-shadow 0.6s var(--ease-soft), border-color 0.6s var(--ease-soft);
}
.photo-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 15px;
  pointer-events: none;
  background:
    radial-gradient(70% 60% at 50% 30%, rgba(255, 255, 255, 0.20), transparent 62%),
    radial-gradient(90% 80% at 85% 90%, rgba(255, 255, 255, 0.14), transparent 60%);
  opacity: 0;
  transition: opacity 0.6s var(--ease-soft);
}
.photo-frame:hover::after { opacity: 1; }
.photo-frame:hover { box-shadow: 0 0 0 1px rgba(120, 160, 255, 0.50), 0 30px 60px rgba(22, 93, 255, 0.30); }

/* 图片滚动视差（JS 控制 transform） */
.parallax-img { will-change: transform; }

/* ============================================================
   AI 培训 · GEO 线下实训 —— 横向无缝滚动相册（从右往左）
   ============================================================ */
.training-track {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.track-inner {
  display: flex;
  width: max-content;
  gap: 22px;
  padding: 8px 0;
  will-change: transform;
  animation: trackScroll 60s linear infinite;
}
.training-track .shot {
  flex: 0 0 auto;
  width: clamp(220px, 22vw, 320px);
  aspect-ratio: 4 / 3;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  background: var(--card);
}
.training-track .shot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.9s var(--ease-soft);
}
.training-track:hover .track-inner { animation-play-state: paused; }
.training-track .shot:hover img { transform: scale(1.06); }
.training-track .shot:hover { box-shadow: 0 18px 34px rgba(22, 93, 255, 0.28); border-color: var(--line-blue); }

@keyframes trackScroll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@media (max-width: 767px) {
  .track-inner { gap: 14px; padding: 6px 0; }
  .training-track .shot { width: clamp(200px, 62vw, 260px); border-radius: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  .track-inner { animation: none; flex-wrap: wrap; width: auto; justify-content: center; }
}