/* 全局样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: #fff;
}

/* 顶部视频+宣传语区域 - 蓝紫渐变背景 */
.ai-hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: var(--hero-banner-height, 720px);
  background: linear-gradient(135deg, #f0f6ff 0%, #e8f0ff 50%, #f0f4ff 100%);
  z-index: 0;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.ai-hero-banner {
  position: relative;
  width: 100%;
  min-height: 720px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 0;
  overflow: hidden;
  z-index: 1;
  margin: 0;
  box-sizing: border-box;
}

.duanshuo-ai-wrap {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: #1d2129;
  line-height: 1.7;
  background: #fff;
  width: 100%;
  min-width: 100vw;
  margin: 0;
  padding: 0;
  position: relative;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 顶部内容容器 */
.ai-hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  gap: 60px;
  box-sizing: border-box;
  padding: 0 24px;
}

/* 响应式调整 */
@media (min-width: 1600px) {
  .ai-hero-content {
    max-width: 1440px;
    padding: 0 60px;
  }
  .ai-container {
    max-width: 1440px;
    padding: 0 60px;
  }
}

/* 超宽屏适配 (>=1920px) */
@media (min-width: 1920px) {
  .ai-hero-content {
    max-width: 1760px;
    padding: 0 80px;
  }
  .ai-container {
    max-width: 1760px;
    padding: 0 80px;
  }
  .ai-hero-background {
    min-height: 800px;
  }
  .ai-hero-banner {
    min-height: 800px;
    padding: 140px 0;
  }
  .ai-hero-text h1 {
    font-size: 64px;
  }
  .ai-hero-text p {
    font-size: 22px;
  }
  .ai-main-title {
    font-size: 56px;
  }
  .ai-module {
    gap: 80px;
  }
  .ai-module-text {
    min-width: 440px;
  }
  .ai-roadmap {
    padding: 72px 80px;
  }
  .ai-roadmap-grid {
    gap: 40px;
  }
}

/* 极宽屏适配 (>=2400px) */
@media (min-width: 2400px) {
  .ai-hero-content {
    max-width: 2100px;
    padding: 0 120px;
  }
  .ai-container {
    max-width: 2100px;
    padding: 0 120px;
  }
  .ai-hero-background {
    min-height: 900px;
  }
  .ai-hero-banner {
    min-height: 900px;
    padding: 160px 0;
  }
  .ai-hero-text h1 {
    font-size: 72px;
  }
  .ai-hero-text p {
    font-size: 24px;
  }
  .ai-main-title {
    font-size: 64px;
  }
  .ai-module {
    gap: 100px;
    margin-bottom: 140px;
  }
  .ai-module-text {
    min-width: 520px;
  }
  .ai-roadmap {
    padding: 80px 100px;
    border-radius: 32px;
  }
  .ai-roadmap-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
  }
  .ai-roadmap h2 {
    font-size: 40px;
    margin-bottom: 60px;
  }
  .ai-hero-text .ai-hero-btn {
    padding: 20px 44px;
    font-size: 20px;
  }
  .ai-hero-banner .hero-bottom-fade {
    height: 480px;
  }
}
/* 背景装饰几何图形 */
.ai-hero-banner::before {
  content: "";
  position: absolute;
  top: 15%;
  right: 8%;
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, rgba(22, 119, 255, 0.1) 0%, rgba(124, 58, 237, 0.05) 100%);
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  z-index: 1;
  animation: float 6s ease-in-out infinite;
}
.ai-hero-banner::after {
  content: "";
  position: absolute;
  bottom: 10%;
  left: 5%;
  width: 150px;
  height: 150px;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.08) 0%, rgba(22, 119, 255, 0.04) 100%);
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  z-index: 1;
  animation: float 8s ease-in-out infinite reverse;
}
/* 额外装饰元素 */
.ai-hero-banner .deco-circle {
  position: absolute;
  top: 60%;
  right: 25%;
  width: 80px;
  height: 80px;
  border: 2px solid rgba(22, 119, 255, 0.15);
  border-radius: 50%;
  z-index: 1;
  animation: rotate 20s linear infinite;
}
.ai-hero-banner .deco-dots {
  position: absolute;
  top: 25%;
  left: 8%;
  width: 100px;
  height: 100px;
  background-image: radial-gradient(circle, rgba(22, 119, 255, 0.2) 2px, transparent 2px);
  background-size: 20px 20px;
  z-index: 1;
}
.ai-hero-banner .hero-bottom-fade {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 360px;
  background: linear-gradient(to bottom,
    rgba(255,255,255,0)    0%,
    rgba(255,255,255,.01)  8%,
    rgba(255,255,255,.03)  15%,
    rgba(255,255,255,.07)  23%,
    rgba(255,255,255,.12)  32%,
    rgba(255,255,255,.20)  42%,
    rgba(255,255,255,.30)  52%,
    rgba(255,255,255,.44)  62%,
    rgba(255,255,255,.60)  72%,
    rgba(255,255,255,.76)  82%,
    rgba(255,255,255,.90)  91%,
    rgba(255,255,255,1)   100%);
  z-index: 2;
  pointer-events: none;
}
@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}
@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 滚动加载动画 */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* 不同元素的动画效果 */
.animate-on-scroll.animate-fade {
  opacity: 0;
  transform: translateY(0);
  transition: opacity 0.8s ease-out;
}
.animate-on-scroll.animate-fade.animate-in {
  opacity: 1;
}

.animate-on-scroll.animate-slide-left {
  opacity: 0;
  transform: translateX(-50px) translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.animate-slide-left.animate-in {
  opacity: 1;
  transform: translateX(0) translateY(0);
}

.animate-on-scroll.animate-slide-right {
  opacity: 0;
  transform: translateX(50px) translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.animate-slide-right.animate-in {
  opacity: 1;
  transform: translateX(0) translateY(0);
}

.animate-on-scroll.animate-scale {
  opacity: 0;
  transform: scale(0.9) translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.animate-on-scroll.animate-scale.animate-in {
  opacity: 1;
  transform: scale(1) translateY(0);
}

.animate-on-scroll.animate-bounce {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity 0.6s ease-out, transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.animate-on-scroll.animate-bounce.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* 主标题特殊处理 - 保持水平居中 */
.ai-main-title.animate-on-scroll {
  transform: translateX(-50%) translateY(30px);
}
.ai-main-title.animate-on-scroll.animate-in {
  transform: translateX(-50%) translateY(0);
}

/* 延迟动画 */
.animate-delay-1 {
  transition-delay: 0.1s;
}
.animate-delay-2 {
  transition-delay: 0.2s;
}
.animate-delay-3 {
  transition-delay: 0.3s;
}
.animate-delay-4 {
  transition-delay: 0.4s;
}
.animate-delay-5 {
  transition-delay: 0.5s;
}

/* 鼠标悬浮动画 - 按钮 */
.ai-hero-btn {
  transition: all 0.3s ease;
}
.ai-hero-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(22, 119, 255, 0.4);
}

/* 鼠标悬浮动画 - 图片容器 */
.ai-module-img {
  transition: all 0.4s ease;
  cursor: pointer;
}
/* 图片容器悬浮效果 - 只保留缩放 */
.ai-module:hover .ai-module-img {
  transform: scale(1.02);
}
.ai-module-img:active {
  transform: scale(0.98);
}

/* 鼠标悬浮动画 - 图标 */
.ai-module-icon {
  transition: all 0.3s ease;
  cursor: pointer;
}
/* 模块特定颜色的图标悬浮效果 */
.module-color-1:hover .ai-module-icon {
  transform: scale(1.1);
  background: rgba(22, 119, 255, 0.1);
}

.module-color-2:hover .ai-module-icon {
  transform: scale(1.1);
  background: rgba(52, 211, 153, 0.1);
}

.module-color-3:hover .ai-module-icon {
  transform: scale(1.1);
  background: rgba(245, 158, 11, 0.1);
}

.module-color-4:hover .ai-module-icon {
  transform: scale(1.1);
  background: rgba(239, 68, 68, 0.1);
}

.module-color-5:hover .ai-module-icon {
  transform: scale(1.1);
  background: rgba(139, 92, 246, 0.1);
}

.module-color-6:hover .ai-module-icon {
  transform: scale(1.1);
  background: rgba(59, 130, 246, 0.1);
}

.module-color-7:hover .ai-module-icon {
  transform: scale(1.1);
  background: rgba(16, 185, 129, 0.1);
}
.ai-module-icon:active {
  transform: scale(0.95);
}

/* 鼠标悬浮动画 - 路线卡片 */
.ai-roadmap-item {
  transition: all 0.3s ease;
  cursor: pointer;
}
.ai-roadmap-item:hover {
  transform: translateY(-5px);
}
.ai-roadmap-item:active {
  transform: translateY(-2px) scale(0.98);
}

/* 鼠标悬浮动画 - 路线图标 */
.ai-roadmap-icon {
  transition: all 0.3s ease;
  cursor: pointer;
}
.ai-roadmap-item:hover .ai-roadmap-icon {
  transform: scale(1.1);
  background: rgba(22, 119, 255, 0.1);
}
.ai-roadmap-icon:active {
  transform: scale(0.95);
}

/* 鼠标悬浮动画 - 标题高亮 */
.ai-module-text h2 {
  transition: all 0.3s ease;
  cursor: pointer;
}

.ai-module-text h2:active {
  transform: scale(0.98);
}

/* 鼠标悬浮动画 - 分隔线 */
.ai-module-divider {
  cursor: pointer;
}
.ai-module-divider::before {
  transition: all 0.3s ease;
}
.ai-module-divider:hover::before {
  transform: translate(-50%, -50%) scale(2);
  background: rgba(22, 119, 255, 0.8);
  box-shadow: 0 0 12px rgba(22, 119, 255, 0.4);
}

/* AI高亮标签 */
.ai-highlight {
  cursor: pointer;
}
.ai-highlight:active {
  transform: scale(0.98);
  transition: transform 0.2s ease;
}

/* 鼠标悬浮动画 - 模块文本 */
.ai-module-text p {
  transition: all 0.3s ease;
}
.ai-module:hover .ai-module-text p {
  color: #333;
  transform: translateX(5px);
}

/* 鼠标悬浮动画 - 路线文本 */
.ai-roadmap-item p {
  transition: all 0.3s ease;
}
.ai-roadmap-item:hover p {
  color: #333;
}

/* 鼠标悬浮动画 - 路线标题 */
.ai-roadmap-item h3 {
  transition: all 0.3s ease;
  cursor: pointer;
}
.ai-roadmap-item:hover h3 {
  color: #7c3aed;
  transform: translateX(5px);
}
/* 左侧宣传语容器 - 适配浅背景，文字改为深色 */
.ai-hero-text {
  flex: 1;
  max-width: 50%;
  color: #1d2129; /* 替换为深色文字，匹配参考图 */
  z-index: 2;
}
.ai-hero-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, rgba(22, 119, 255, 0.1) 0%, rgba(22, 119, 255, 0.05) 100%);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 32px;
  box-shadow: 0 4px 12px rgba(22, 119, 255, 0.1);
}
.ai-hero-text h1 {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 24px;
}
.ai-hero-text h1 .ai-highlight {
  color: #fff;
  background: linear-gradient(135deg, #1677ff 0%, #7c3aed 100%);
  padding: 4px 16px;
  border-radius: 12px;
  margin: 0 6px;
  box-shadow: 0 4px 12px rgba(22, 119, 255, 0.3);
  position: relative;
  display: inline-block;
}
.ai-hero-text h1 .ai-highlight::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg, rgba(22, 119, 255, 0.3) 0%, rgba(124, 58, 237, 0.1) 100%);
  border-radius: 14px;
  z-index: -1;
}
.ai-hero-text p {
  font-size: 20px;
  line-height: 1.6;
  margin-bottom: 32px;
  color: #4e5969; /* 浅灰色副标题，贴合参考图 */
}
.ai-hero-text .ai-hero-btn {
  display: inline-block;
  padding: 18px 36px;
  background: #ffffff;
  color: #0B1F4D;
  font-size: 18px;
  font-weight: 600;
  border-radius: 12px;
  text-decoration: none;
  transition: all 0.4s ease;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.16);
  border: 1px solid rgba(255,255,255,.24);
  position: relative;
  overflow: hidden;
  z-index: 1;
}
.ai-hero-text .ai-hero-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent 0%, rgba(0,0,0,0.06) 50%, transparent 100%);
  transition: left 0.6s ease;
  z-index: -1;
}
.ai-hero-text .ai-hero-btn:hover {
  transform: translateY(-3px) scale(1.04);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.2);
  background: linear-gradient(90deg,#4C6FFF 0%,#7B61FF 100%);
  color:#fff;
}
.ai-hero-text .ai-hero-btn:hover::before {
  left: 100%;
}
.ai-hero-text .ai-hero-btn:active {
  transform: translateY(-1px) scale(0.98);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.22);
}
/* 右侧视频容器 */
.ai-hero-video {
  flex: 1.1 1 520px;
  width: 100%;
  max-width: 720px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08); /* 降低阴影浓度，贴合参考图轻盈感 */
  z-index: 2;
  background: #fff; /* 视频容器背景白色，增加通透感 */
}
.ai-hero-video video {
  width: 100%;
  height: auto;
  object-fit: contain;
  cursor: pointer;
}

/* 视频播放按钮 */
.ai-hero-video {
  position: relative;
}

.video-play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: rgba(0, 0, 0, 0.6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.video-play-button:hover {
  background: rgba(0, 0, 0, 0.8);
  transform: translate(-50%, -50%) scale(1.1);
}

.video-play-button:active {
  transform: translate(-50%, -50%) scale(0.95);
}

.video-play-button svg {
  width: 40px;
  height: 40px;
  margin-left: 5px;
}

/* 容器 */
.ai-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
  background: #fff;
}

/* 主标题 - 移除下划线样式 */
.ai-main-title {
  font-size: 48px;
  font-weight: 700;
  text-align: center;
  margin: 56px 0 56px;
  color: #1d2129;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}
.ai-main-title span {
  color: #1677ff;
}

/* 模块卡片 */
.ai-module {
  display: flex;
  align-items: flex-start;
  gap: 60px;
  margin-bottom: 120px;
}
.ai-module.reverse {
  flex-direction: row-reverse;
}
.ai-module-text {
  flex: 1;
  min-width: 380px;
}
.ai-module-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  background: #f5f7fa;
}
.ai-module-icon iconify-icon {
  color: #1677ff !important;
}

/* 模块颜色主题 */
.module-color-1 .ai-module-icon {
  background: rgba(22, 119, 255, 0.1);
}
.module-color-1 .ai-module-icon iconify-icon {
  color: #1677ff !important;
}


.module-color-2 .ai-module-icon {
  background: rgba(52, 211, 153, 0.1);
}
.module-color-2 .ai-module-icon iconify-icon {
  color: #10b981 !important;
}


.module-color-3 .ai-module-icon {
  background: rgba(245, 158, 11, 0.1);
}
.module-color-3 .ai-module-icon iconify-icon {
  color: #f59e0b !important;
}


.module-color-4 .ai-module-icon {
  background: rgba(239, 68, 68, 0.1);
}
.module-color-4 .ai-module-icon iconify-icon {
  color: #ef4444 !important;
}


.module-color-5 .ai-module-icon {
  background: rgba(139, 92, 246, 0.1);
}
.module-color-5 .ai-module-icon iconify-icon {
  color: #8b5cf6 !important;
}


.module-color-6 .ai-module-icon {
  background: rgba(59, 130, 246, 0.1);
}
.module-color-6 .ai-module-icon iconify-icon {
  color: #3b82f6 !important;
}


.module-color-7 .ai-module-icon {
  background: rgba(16, 185, 129, 0.1);
}
.module-color-7 .ai-module-icon iconify-icon {
  color: #10b981 !important;
}


.ai-module-text h2 {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 24px;
  color: #1d2129;
  display: inline-block;
}
.ai-module-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(22, 119, 255, 0.05) 0%, rgba(22, 119, 255, 0.02) 100%);
  z-index: 1;
}
.ai-module-img img {
  position: relative;
  z-index: 2;
}
.ai-module-text p {
  font-size: 18px;
  color: #4e5969;
  line-height: 1.9;
  margin-bottom: 20px;
}

/* 功能特性列表 */
.ai-feature-list {
  list-style: none;
  margin: 20px 0;
  padding: 0;
}

.ai-feature-list li {
  position: relative;
  padding-left: 32px;
  margin-bottom: 12px;
  font-size: 16px;
  color: #4e5969;
  line-height: 1.6;
  transition: all 0.3s ease;
}

.ai-feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0;
  width: 24px;
  height: 24px;
  background: rgba(22, 119, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: bold;
  color: #1677ff;
  transition: all 0.3s ease;
}

.ai-module:hover .ai-feature-list li {
  color: #333;
  transform: translateX(5px);
}

/* 模块特定颜色的悬浮效果 */
.module-color-1:hover .ai-feature-list li::before {
  background: rgba(22, 119, 255, 0.2);
  transform: scale(1.1);
}

.module-color-2:hover .ai-feature-list li::before {
  background: rgba(52, 211, 153, 0.2);
  transform: scale(1.1);
}

.module-color-3:hover .ai-feature-list li::before {
  background: rgba(245, 158, 11, 0.2);
  transform: scale(1.1);
}

.module-color-4:hover .ai-feature-list li::before {
  background: rgba(239, 68, 68, 0.2);
  transform: scale(1.1);
}

.module-color-5:hover .ai-feature-list li::before {
  background: rgba(139, 92, 246, 0.2);
  transform: scale(1.1);
}

.module-color-6:hover .ai-feature-list li::before {
  background: rgba(59, 130, 246, 0.2);
  transform: scale(1.1);
}

.module-color-7:hover .ai-feature-list li::before {
  background: rgba(16, 185, 129, 0.2);
  transform: scale(1.1);
}

/* 模块特定颜色的列表样式 */
.module-color-1 .ai-feature-list li::before {
  background: rgba(22, 119, 255, 0.1);
  color: #1677ff;
}

.module-color-2 .ai-feature-list li::before {
  background: rgba(52, 211, 153, 0.1);
  color: #10b981;
}

.module-color-3 .ai-feature-list li::before {
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
}

.module-color-4 .ai-feature-list li::before {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
}

.module-color-5 .ai-feature-list li::before {
  background: rgba(139, 92, 246, 0.1);
  color: #8b5cf6;
}

.module-color-6 .ai-feature-list li::before {
  background: rgba(59, 130, 246, 0.1);
  color: #3b82f6;
}

.module-color-7 .ai-feature-list li::before {
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
}
.ai-module-img {
  flex: 0 0 50%;
  min-width: 420px;
  aspect-ratio: 16/9;
  background: #f5f7fa;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 12px 36px rgba(0,80,255,0.08);
  position: relative;
}
.ai-module-img img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 迭代路线*/
.ai-roadmap {
  background: #f7f8fa;
  border-radius: 24px;
  padding: 60px;
  margin: 100px 0;
}
.ai-roadmap h2 {
  font-size: 32px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 50px;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
  position: relative;
}
.ai-roadmap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.ai-roadmap-item {
  background: #fff;
  border-radius: 16px;
  padding: 32px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
}
.ai-roadmap-icon {
  width: 48px;
  height: 48px;
  background: #f5f7fa;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
/* 路线模块装饰 */
.ai-roadmap {
  position: relative;
}
.ai-roadmap::before {
  content: '';
  position: absolute;
  top: 20px;
  right: 30px;
  width: 80px;
  height: 80px;
  border: 2px solid rgba(22, 119, 255, 0.08);
  border-radius: 20px;
  transform: rotate(30deg);
}
.ai-roadmap::after {
  content: '';
  position: absolute;
  bottom: 30px;
  left: 40px;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.05) 0%, rgba(22, 119, 255, 0.03) 100%);
  border-radius: 50%;
}
.ai-roadmap-item h3 {
  font-size: 20px;
  color: #1677ff;
  margin-bottom: 12px;
  font-weight: 600;
}
.ai-module-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(22, 119, 255, 0.1) 50%, transparent 100%);
  margin: 80px 0;
  position: relative;
}
.ai-module-divider::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  background: rgba(22, 119, 255, 0.3);
  border-radius: 50%;
}
/* 模块装饰元素 */
.ai-module {
  position: relative;
}
.ai-module::before {
  content: '';
  position: absolute;
  top: -20px;
  right: -20px;
  width: 60px;
  height: 60px;
  border: 2px solid rgba(22, 119, 255, 0.1);
  border-radius: 12px;
  transform: rotate(15deg);
  z-index: 0;
}
.ai-module::after {
  content: '';
  position: absolute;
  bottom: -30px;
  left: 10%;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, rgba(22, 119, 255, 0.05) 0%, rgba(124, 58, 237, 0.03) 100%);
  border-radius: 50%;
  z-index: 0;
}
.ai-module.reverse::before {
  left: -20px;
  right: auto;
  transform: rotate(-15deg);
}
.ai-module.reverse::after {
  left: auto;
  right: 10%;
}
.ai-roadmap-item p {
  font-size: 16px;
  color: #4e5969;
  line-height: 1.8;
}

/* 移动端适配 */
@media (max-width: 768px) {
  /* 移动端顶部改为上下布局 */
  .ai-hero-banner {
    height: auto;
    padding: 40px 20px;
    flex-direction: column;
    text-align: center;
  }
  .ai-hero-text {
    max-width: 100%;
    margin-bottom: 24px;
  }
  .ai-hero-text h1 {
    font-size: 28px;
    line-height: 1.3;
  }
  .ai-hero-text p {
    font-size: 14px;
    margin-bottom: 24px;
  }
  .ai-hero-btn {
    padding: 14px 28px !important;
    font-size: 16px !important;
  }
  .ai-hero-video {
    width: 100%;
    max-width: 100%;
  }

  .ai-main-title { 
    font-size: 24px; 
    margin: 40px 0 30px; 
  }
  .ai-module { 
    flex-direction: column; 
    gap: 20px; 
    margin-bottom: 40px; 
  }
  .ai-module-text, .ai-module-img { min-width: 100%; }
  .ai-module-img { flex: 0 0 100%; aspect-ratio: 16/9; }
  .ai-module-text h2 {
    font-size: 22px;
  }
  .ai-module-text p {
    font-size: 14px;
    line-height: 1.6;
  }
  .ai-module-icon {
    width: 48px;
    height: 48px;
  }
  .ai-roadmap { 
    padding: 24px 20px;
    margin: 60px 0;
  }
  .ai-roadmap h2 {
    font-size: 22px;
  }
  .ai-roadmap-grid { 
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .ai-roadmap-item {
    padding: 24px;
  }
  .ai-roadmap-item h3 {
    font-size: 18px;
  }
  .ai-roadmap-item p {
    font-size: 14px;
  }
  .ai-module-divider {
    margin: 40px 0;
  }
  
  /* 触摸目标优化 */
  .ai-hero-btn, .ai-module-icon, .ai-roadmap-icon {
    min-height: 48px;
    min-width: 48px;
  }
  
  /* 滚动优化 */
  .animate-on-scroll {
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
  }
  
  /* 装饰元素在移动端隐藏 */
  .ai-hero-banner::before,
  .ai-hero-banner::after,
  .ai-hero-banner .deco-circle,
  .ai-hero-banner .deco-dots,
  .ai-module::before,
  .ai-module::after,
  .ai-roadmap::before,
  .ai-roadmap::after {
    display: none;
  }
}

/* 平板适配 */
@media (min-width: 769px) and (max-width: 1024px) {
  .ai-hero-banner {
    padding: 0 40px;
  }
  .ai-hero-text h1 {
    font-size: 48px;
  }
  .ai-module {
    gap: 40px;
  }
  .ai-module-text, .ai-module-img {
    min-width: 300px;
  }
}

/* 图片查看模态框 */
.image-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 20px;
  box-sizing: border-box;
}

.modal-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: modalFadeIn 0.3s ease;
}

.modal-image {
  width: 100%;
  height: auto;
  max-height: 85vh;
  object-fit: contain;
}

.close-modal {
  position: absolute;
  top: 15px;
  right: 15px;
  color: #333;
  font-size: 32px;
  font-weight: bold;
  cursor: pointer;
  z-index: 1001;
  background: rgba(255, 255, 255, 0.9);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.close-modal:hover {
  background: #fff;
  color: #1677ff;
  transform: scale(1.1);
}

@keyframes modalFadeIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 响应式调整 */
@media (max-width: 768px) {
  .modal-content {
    max-width: 95vw;
    max-height: 95vh;
  }
  
  .modal-image {
    max-height: 80vh;
  }
  
  .close-modal {
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    font-size: 28px;
  }
}

/* 超宽屏幕适配 (1920px及以上) */
@media (min-width: 1920px) {
  .ai-hero-banner {
    padding: 0 100px;
  }
  
  .ai-hero-text {
    max-width: 800px;
  }
  
  .ai-hero-text h1 {
    font-size: 56px;
    line-height: 1.3;
  }
  
  .ai-hero-text p {
    font-size: 22px;
    max-width: 700px;
  }
  
  .ai-container {
    max-width: 1600px;
    padding: 60px 80px;
  }
  
  .ai-main-title {
    font-size: 48px;
    margin-bottom: 60px;
  }
  
  .ai-module {
    max-width: 1400px;
    margin: 0 auto 60px;
    padding: 50px;
    gap: 80px;
  }
  
  .ai-module-text h2 {
    font-size: 36px;
  }
  
  .ai-module-text p {
    font-size: 20px;
  }
  
  .ai-feature-list li {
    font-size: 18px;
  }
  
  .ai-module-img {
    min-width: 500px;
  }
  
  .ai-roadmap {
    max-width: 1400px;
    margin: 0 auto;
    padding: 60px 80px;
  }
  
  .ai-roadmap h2 {
    font-size: 36px;
    margin-bottom: 50px;
  }
  
  .ai-roadmap-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
  }
  
  .ai-roadmap-item {
    padding: 35px;
  }
  
  .ai-roadmap-item h3 {
    font-size: 22px;
  }
  
  .ai-roadmap-item p {
    font-size: 16px;
  }
}

/* 超超宽屏幕适配 (2560px及以上) */
@media (min-width: 2560px) {
  .ai-hero-banner {
    padding: 0 150px;
  }
  
  .ai-hero-text {
    max-width: 1000px;
  }
  
  .ai-hero-text h1 {
    font-size: 72px;
  }
  
  .ai-hero-text p {
    font-size: 26px;
    max-width: 900px;
  }
  
  .ai-hero-btn {
    padding: 24px 48px;
    font-size: 22px;
  }
  
  .ai-container {
    max-width: 2200px;
    padding: 80px 120px;
  }
  
  .ai-main-title {
    font-size: 56px;
  }
  
  .ai-module {
    max-width: 1800px;
    padding: 60px;
    gap: 100px;
  }
  
  .ai-module-text h2 {
    font-size: 42px;
  }
  
  .ai-module-text p {
    font-size: 22px;
  }
  
  .ai-feature-list li {
    font-size: 20px;
    padding-left: 40px;
  }
  
  .ai-feature-list li::before {
    width: 28px;
    height: 28px;
    font-size: 16px;
  }
  
  .ai-module-img {
    min-width: 650px;
  }
  
  .ai-roadmap {
    max-width: 1800px;
  }
  
  .ai-roadmap h2 {
    font-size: 42px;
  }
  
  .ai-roadmap-grid {
    gap: 50px;
  }
  
  .ai-roadmap-item {
    padding: 45px;
  }
  
  .ai-roadmap-item h3 {
    font-size: 26px;
  }
  
  .ai-roadmap-item p {
    font-size: 18px;
  }
}

/* ========================================================
   顶部 Banner — 全新视觉升级
   ======================================================== */

/* 背景基础层：深蓝极光感 */
.ai-hero-background {
  background: radial-gradient(160% 130% at 65% -10%,
    #0D1F5C 0%,
    #0A1847 28%,
    #071236 60%,
    #040B26 100%);
  -webkit-mask-image: linear-gradient(to bottom,
    #000 0%,
    #000 45%,
    rgba(0,0,0,.97) 52%,
    rgba(0,0,0,.91) 58%,
    rgba(0,0,0,.82) 63%,
    rgba(0,0,0,.70) 68%,
    rgba(0,0,0,.56) 73%,
    rgba(0,0,0,.41) 78%,
    rgba(0,0,0,.27) 83%,
    rgba(0,0,0,.15) 88%,
    rgba(0,0,0,.06) 93%,
    rgba(0,0,0,.01) 97%,
    rgba(0,0,0,0) 100%);
  mask-image: linear-gradient(to bottom,
    #000 0%,
    #000 45%,
    rgba(0,0,0,.97) 52%,
    rgba(0,0,0,.91) 58%,
    rgba(0,0,0,.82) 63%,
    rgba(0,0,0,.70) 68%,
    rgba(0,0,0,.56) 73%,
    rgba(0,0,0,.41) 78%,
    rgba(0,0,0,.27) 83%,
    rgba(0,0,0,.15) 88%,
    rgba(0,0,0,.06) 93%,
    rgba(0,0,0,.01) 97%,
    rgba(0,0,0,0) 100%);
  mask-size: 100% 100%;
  overflow: hidden;
}

/* 光晕光斑层 */
.ai-hero-background::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(55% 60% at 15% 25%, rgba(56,110,255,.38) 0%, transparent 65%),
    radial-gradient(50% 55% at 80% 20%, rgba(111,72,255,.30) 0%, transparent 60%),
    radial-gradient(45% 40% at 50% 85%, rgba(27,200,255,.18) 0%, transparent 70%),
    radial-gradient(30% 30% at 72% 60%, rgba(80,150,255,.15) 0%, transparent 55%);
}

/* 网格线装饰层 */
.ai-hero-background::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 60px 60px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 90%);
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, #000 40%, transparent 90%);
}

/* Canvas 粒子占位 (JS 负责绘制) */
#heroBgCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: .6;
}

/* Banner 整体 */
.ai-hero-banner {
  isolation: isolate;
  color: #fff;
}
.ai-hero-banner::before,
.ai-hero-banner::after,
.ai-hero-banner .deco-circle,
.ai-hero-banner .deco-dots { display: none; }
.ai-hero-content { position: relative; z-index: 3; }

/* ── 左侧文字区 ── */
.ai-hero-text {
  color: #fff;
  position: relative;
}

/* 顶部徽章 */
.ai-hero-text .ai-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  animation: bannerFadeUp .7s cubic-bezier(.16,1,.3,1) both;
}
.ai-hero-text .ai-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.09);
  border: 1px solid rgba(255,255,255,.2);
  color: #d4e4ff;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  backdrop-filter: blur(8px);
  transition: background .2s, border-color .2s;
}
.ai-hero-text .ai-badge:hover {
  background: rgba(255,255,255,.16);
  border-color: rgba(255,255,255,.36);
}
.ai-hero-text .ai-badge svg { width: 12px; height: 12px; opacity: .9; }
.ai-hero-text .ai-badge--alert {
  background: linear-gradient(135deg, rgba(255,190,60,.85) 0%, rgba(255,140,30,.85) 100%);
  border-color: rgba(255,200,80,.6);
  color: #1a1200;
  font-weight: 700;
}

/* 主标题 */
.ai-hero-text h1 {
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-weight: 800;
  font-size: 62px;
  line-height: 1.12;
  letter-spacing: -.03em;
  margin-bottom: 0;
  animation: bannerFadeUp .8s cubic-bezier(.16,1,.3,1) .12s both;
}

/* AI 关键词：渐变 + 发光 */
.ai-hero-text .ai-keyword {
  display: inline-block;
  position: relative;
  background: linear-gradient(100deg, #60c8ff 0%, #5B8FFF 40%, #A78BFA 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 14px rgba(100,160,255,.55));
}

/* 功能标签行 */
.ai-hero-text .ai-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 22px 0 18px;
  animation: bannerFadeUp .8s cubic-bezier(.16,1,.3,1) .22s both;
}
.ai-hero-text .ai-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  color: #b8d4ff;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(80,130,255,.14);
  border: 1px solid rgba(100,160,255,.28);
  backdrop-filter: blur(6px);
  transition: background .2s, border-color .2s, color .2s;
}
.ai-hero-text .ai-tag:hover {
  background: rgba(80,130,255,.28);
  border-color: rgba(100,180,255,.55);
  color: #fff;
}

/* 副标题 */
.ai-hero-text p {
  font-size: 18px;
  color: rgba(200,220,255,.72);
  line-height: 1.8;
  max-width: 42ch;
  margin-bottom: 32px;
  animation: bannerFadeUp .8s cubic-bezier(.16,1,.3,1) .32s both;
}

/* CTA 按钮 */
.ai-hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 32px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .02em;
  background: linear-gradient(135deg, #4C80FF 0%, #7B5FFF 100%);
  color: #fff;
  border: 1px solid rgba(255,255,255,.15);
  box-shadow: 0 8px 32px rgba(76,128,255,.45), 0 2px 8px rgba(0,0,0,.2), inset 0 1px 0 rgba(255,255,255,.15);
  transition: transform .22s cubic-bezier(.16,1,.3,1), box-shadow .22s ease, filter .22s ease;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  animation: bannerFadeUp .8s cubic-bezier(.16,1,.3,1) .42s both;
}
.ai-hero-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,.12) 0%, transparent 60%);
  pointer-events: none;
}
.ai-hero-btn:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 14px 44px rgba(76,128,255,.58), 0 4px 12px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.2);
  filter: brightness(1.08);
}
.ai-hero-btn:active { transform: translateY(-1px) scale(.99); }
.ai-hero-btn svg { width: 16px; height: 16px; transition: transform .2s ease; }
.ai-hero-btn:hover svg { transform: translateX(3px); }

/* 统计数字行 */
.ai-hero-stats {
  display: flex;
  gap: 28px;
  margin-top: 36px;
  animation: bannerFadeUp .8s cubic-bezier(.16,1,.3,1) .52s both;
}
.ai-hero-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.ai-hero-stat-num {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -.02em;
  color: #ffffff;
  line-height: 1.1;
}
.ai-hero-stat-label {
  font-size: 11px;
  color: rgba(200,225,255,.85);
  font-weight: 500;
  letter-spacing: .04em;
}
.ai-hero-stat-divider {
  width: 1px;
  height: 36px;
  background: rgba(255,255,255,.12);
  align-self: center;
}

/* ── 右侧视频区 ── */
.ai-hero-video {
  position: relative;
  width: 100%;
  max-width: min(100%, 720px);
  border-radius: 20px;
  overflow: hidden;
  background: rgba(6,14,40,.6);
  border: 1px solid rgba(255,255,255,.12);
  box-shadow:
    0 0 0 1px rgba(80,130,255,.12),
    0 24px 64px rgba(0,0,0,.45),
    0 4px 16px rgba(0,0,0,.3),
    inset 0 1px 0 rgba(255,255,255,.08);
  animation: bannerScaleIn .9s cubic-bezier(.16,1,.3,1) .18s both;
  transition: box-shadow .3s ease, transform .3s ease;
}
.ai-hero-video:hover {
  box-shadow:
    0 0 0 1px rgba(80,150,255,.25),
    0 28px 72px rgba(0,0,0,.5),
    0 6px 20px rgba(76,128,255,.2),
    inset 0 1px 0 rgba(255,255,255,.1);
  transform: translateY(-2px);
}

/* 视频顶部装饰栏 */
.ai-hero-video::before {
  content: '';
  display: block !important;
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 36px;
  background: rgba(10,20,55,.9);
  border-bottom: 1px solid rgba(255,255,255,.07);
  z-index: 5;
  backdrop-filter: blur(4px);
}
.ai-hero-video::after {
  content: '● ● ●';
  display: block !important;
  position: absolute;
  top: 10px; left: 14px;
  font-size: 9px;
  color: rgba(255,255,255,.25);
  letter-spacing: 4px;
  z-index: 6;
  pointer-events: none;
}
.ai-hero-video video {
  position: relative;
  z-index: 2;
  margin-top: 36px;
  filter: none;
  mix-blend-mode: normal;
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  background: rgba(6,14,40,.92);
}

/* 视频播放按钮 */
.video-play-button {
  top: calc(50% + 18px);
  background: rgba(255,255,255,.12);
  border: 1.5px solid rgba(255,255,255,.3);
  box-shadow: 0 8px 28px rgba(0,0,0,.35), inset 0 1px 0 rgba(255,255,255,.15);
  backdrop-filter: blur(10px);
  transition: background .2s, transform .2s, box-shadow .2s;
}
.video-play-button:hover {
  background: rgba(76,128,255,.55);
  border-color: rgba(120,170,255,.5);
  box-shadow: 0 12px 36px rgba(76,128,255,.4), inset 0 1px 0 rgba(255,255,255,.2);
  transform: translate(-50%, -50%) scale(1.1);
}

/* ── 动画 keyframes ── */
@keyframes bannerFadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes bannerScaleIn {
  from { opacity: 0; transform: scale(.93) translateY(16px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* 底部过渡 */
.ai-hero-banner .hero-bottom-fade { display: none !important; }

/* ── 响应式 ── */
@media (max-width: 768px) {
  .ai-hero-text h1 { font-size: 36px; }
  .ai-hero-video {
    transform: none;
    max-width: 100%;
  }
  .ai-hero-stats { gap: 16px; }
  .ai-hero-stat-num { font-size: 20px; }
}