/* ========================================
   香蕉视频官网 - 主样式文件
   深空黑 + 霓虹蓝紫渐变科技风
   ======================================== */

/* ---- CSS变量 ---- */
:root {
  --bg-deep: #050a14;
  --bg-card: #0d1526;
  --bg-card2: #111b30;
  --neon-blue: #00c8ff;
  --neon-purple: #8b5cf6;
  --neon-cyan: #06ffd4;
  --accent-yellow: #f5c518;
  --text-primary: #e8f0fe;
  --text-secondary: #8ba3c7;
  --text-muted: #4a6080;
  --border-glow: rgba(0,200,255,0.25);
  --gradient-main: linear-gradient(135deg, #00c8ff 0%, #8b5cf6 100%);
  --gradient-dark: linear-gradient(180deg, #050a14 0%, #0a1628 100%);
  --shadow-neon: 0 0 20px rgba(0,200,255,0.3), 0 0 40px rgba(139,92,246,0.15);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.6);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ---- 基础重置 ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  background: var(--bg-deep);
  color: var(--text-primary);
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--neon-blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--neon-cyan); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ---- 滚动条 ---- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--neon-purple); border-radius: 3px; }

/* ---- 顶部公告栏 ---- */
.top-bar {
  background: linear-gradient(90deg, #0a1628, #1a0a3a, #0a1628);
  border-bottom: 1px solid var(--border-glow);
  padding: 8px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-secondary);
}
.top-bar a { color: var(--neon-blue); margin-left: 8px; }

/* ---- 导航栏 ---- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(5,10,20,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glow);
  padding: 0 24px;
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-main);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  -webkit-text-fill-color: initial;
  color: #fff;
  box-shadow: var(--shadow-neon);
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu a {
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--transition);
  position: relative;
}
.nav-menu a:hover, .nav-menu a.active {
  color: var(--neon-blue);
  background: rgba(0,200,255,0.08);
}
.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--neon-blue);
  border-radius: 1px;
}
.nav-cta {
  background: var(--gradient-main);
  color: #fff !important;
  -webkit-text-fill-color: #fff !important;
  padding: 8px 20px !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
  box-shadow: 0 0 16px rgba(0,200,255,0.3);
}
.nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  border-radius: 1px;
  transition: all var(--transition);
}

/* ---- 搜索框 ---- */
.search-bar-wrap {
  background: rgba(13,21,38,0.95);
  border-bottom: 1px solid var(--border-glow);
  padding: 12px 24px;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-input-wrap {
  flex: 1;
  position: relative;
  max-width: 600px;
}
.search-input-wrap input {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-glow);
  border-radius: 24px;
  padding: 10px 48px 10px 20px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: all var(--transition);
}
.search-input-wrap input:focus {
  border-color: var(--neon-blue);
  background: rgba(0,200,255,0.05);
  box-shadow: 0 0 0 3px rgba(0,200,255,0.1);
}
.search-input-wrap input::placeholder { color: var(--text-muted); }
.search-btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--neon-blue);
  font-size: 16px;
  padding: 4px;
}
.search-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.search-tag {
  background: rgba(0,200,255,0.08);
  border: 1px solid rgba(0,200,255,0.2);
  color: var(--neon-blue);
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition);
}
.search-tag:hover { background: rgba(0,200,255,0.15); }

/* ---- 容器 ---- */
.container { max-width: 1280px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 60px 0; }

/* ---- 标题组件 ---- */
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
  display: inline-block;
  background: rgba(0,200,255,0.1);
  border: 1px solid rgba(0,200,255,0.3);
  color: var(--neon-blue);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}
.section-title .highlight {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-desc { color: var(--text-secondary); font-size: 16px; max-width: 600px; margin: 0 auto; }

/* ---- Hero Banner ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: radial-gradient(ellipse at 30% 50%, rgba(0,200,255,0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 50%, rgba(139,92,246,0.08) 0%, transparent 60%),
              var(--bg-deep);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/hero_banner.jpg');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,200,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,200,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,200,255,0.1);
  border: 1px solid rgba(0,200,255,0.3);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  color: var(--neon-blue);
  margin-bottom: 24px;
}
.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--neon-blue);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}
.hero-title {
  font-size: clamp(36px, 5vw, 60px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
}
.hero-title .brand {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  color: var(--text-secondary);
  font-size: 17px;
  line-height: 1.8;
  margin-bottom: 36px;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-main);
  color: #fff;
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 0 24px rgba(0,200,255,0.3);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 36px rgba(0,200,255,0.45); color: #fff; }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-primary);
  padding: 14px 32px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  border: 1px solid var(--border-glow);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-outline:hover { border-color: var(--neon-blue); color: var(--neon-blue); background: rgba(0,200,255,0.05); }
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-glow);
}
.hero-stat-item { text-align: center; }
.hero-stat-num {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat-label { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }
.hero-visual { position: relative; }
.hero-video-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-neon);
  position: relative;
}
.hero-video-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.hero-video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 64px;
  height: 64px;
  background: rgba(0,200,255,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 0 24px rgba(0,200,255,0.5);
}
.hero-video-play:hover { transform: translate(-50%, -50%) scale(1.1); }
.hero-video-play svg { width: 24px; height: 24px; fill: #fff; margin-left: 4px; }
.hero-float-badge {
  position: absolute;
  background: var(--bg-card2);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(8px);
}
.hero-float-badge.top-right { top: -20px; right: -20px; }
.hero-float-badge.bottom-left { bottom: -20px; left: -20px; }
.hero-float-badge .icon { font-size: 24px; }
.hero-float-badge .text strong { display: block; font-size: 14px; color: var(--text-primary); }
.hero-float-badge .text span { font-size: 12px; color: var(--text-secondary); }

/* ---- 卡片通用 ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-main);
  opacity: 0;
  transition: opacity var(--transition);
}
.card:hover { transform: translateY(-4px); border-color: rgba(0,200,255,0.4); box-shadow: var(--shadow-neon); }
.card:hover::before { opacity: 1; }
.card-icon {
  width: 52px;
  height: 52px;
  background: rgba(0,200,255,0.1);
  border: 1px solid rgba(0,200,255,0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
}
.card-title { font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.card-desc { color: var(--text-secondary); font-size: 14px; line-height: 1.7; }

/* ---- 网格布局 ---- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }

/* ---- 视频卡片 ---- */
.video-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-neon); border-color: rgba(0,200,255,0.4); }
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #0a1628;
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.video-play-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 56px;
  height: 56px;
  background: rgba(0,200,255,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition);
  box-shadow: 0 0 20px rgba(0,200,255,0.5);
}
.video-play-btn svg { width: 22px; height: 22px; fill: #fff; margin-left: 3px; }
.video-card:hover .video-play-btn { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--gradient-main);
  color: #fff;
  padding: 2px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}
.video-info { padding: 16px; }
.video-title { font-size: 15px; font-weight: 600; margin-bottom: 8px; line-height: 1.5; color: var(--text-primary); }
.video-meta { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--text-secondary); }
.video-meta span { display: flex; align-items: center; gap: 4px; }

/* ---- 产品矩阵 ---- */
.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-neon); border-color: rgba(0,200,255,0.4); }
.product-img { position: relative; aspect-ratio: 4/3; overflow: hidden; }
.product-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.product-card:hover .product-img img { transform: scale(1.05); }
.product-body { padding: 24px; }
.product-name { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.product-desc { color: var(--text-secondary); font-size: 14px; margin-bottom: 16px; line-height: 1.7; }
.product-tags { display: flex; gap: 8px; flex-wrap: wrap; }
.product-tag {
  background: rgba(139,92,246,0.1);
  border: 1px solid rgba(139,92,246,0.25);
  color: var(--neon-purple);
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 12px;
}

/* ---- 核心技术 ---- */
.tech-section {
  background: linear-gradient(180deg, var(--bg-deep) 0%, #0a1020 50%, var(--bg-deep) 100%);
}
.tech-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.tech-features { display: grid; gap: 20px; }
.tech-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.tech-item:hover { border-color: rgba(0,200,255,0.4); transform: translateX(4px); }
.tech-item-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--gradient-main);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.tech-item-body h4 { font-size: 15px; font-weight: 600; margin-bottom: 6px; }
.tech-item-body p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.tech-visual { position: relative; }
.tech-visual img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glow);
  box-shadow: var(--shadow-neon);
}

/* ---- 解决方案 ---- */
.solution-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.solution-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.solution-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-neon); }
.solution-card:hover::after { transform: scaleX(1); }
.solution-num {
  font-size: 48px;
  font-weight: 900;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}
.solution-title { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.solution-desc { color: var(--text-secondary); font-size: 14px; margin-bottom: 20px; line-height: 1.7; }
.solution-benefits { display: flex; flex-direction: column; gap: 8px; }
.solution-benefit {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}
.solution-benefit::before {
  content: '';
  width: 6px;
  height: 6px;
  min-width: 6px;
  background: var(--neon-blue);
  border-radius: 50%;
}

/* ---- 流程步骤 ---- */
.process-section { background: var(--bg-card2); }
.process-steps { display: flex; gap: 0; position: relative; }
.process-steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
  z-index: 0;
}
.process-step {
  flex: 1;
  text-align: center;
  padding: 0 16px;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 80px;
  height: 80px;
  background: var(--bg-deep);
  border: 2px solid var(--neon-blue);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  color: var(--neon-blue);
  margin: 0 auto 20px;
  box-shadow: 0 0 20px rgba(0,200,255,0.3);
}
.step-title { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.step-desc { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }

/* ---- 案例 ---- */
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-neon); border-color: rgba(0,200,255,0.4); }
.case-name { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.case-desc { color: var(--text-secondary); font-size: 14px; line-height: 1.7; margin-bottom: 16px; }
.case-tags { display: flex; gap: 8px; }
.case-tag {
  background: rgba(0,200,255,0.08);
  border: 1px solid rgba(0,200,255,0.2);
  color: var(--neon-blue);
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 12px;
}

/* ---- 动态新闻 ---- */
.news-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-neon); border-color: rgba(0,200,255,0.4); }
.news-img { aspect-ratio: 4/3; overflow: hidden; }
.news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.news-card:hover .news-img img { transform: scale(1.05); }
.news-body { padding: 20px; }
.news-date { font-size: 12px; color: var(--text-muted); margin-bottom: 8px; }
.news-title { font-size: 15px; font-weight: 600; margin-bottom: 8px; line-height: 1.5; color: var(--text-primary); }
.news-title:hover { color: var(--neon-blue); }
.news-excerpt { font-size: 13px; color: var(--text-secondary); line-height: 1.6; }
.news-more { display: flex; align-items: center; gap: 4px; font-size: 13px; color: var(--neon-blue); margin-top: 12px; }
.news-more:hover { gap: 8px; }

/* ---- 用户评价 ---- */
.reviews-section { background: linear-gradient(180deg, var(--bg-deep) 0%, #080f1e 100%); }
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  padding: 28px;
  transition: all var(--transition);
  position: relative;
}
.review-card::before {
  content: '"';
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 80px;
  color: rgba(0,200,255,0.08);
  font-family: Georgia, serif;
  line-height: 1;
}
.review-card:hover { border-color: rgba(0,200,255,0.4); box-shadow: var(--shadow-neon); }
.review-stars { display: flex; gap: 4px; margin-bottom: 12px; }
.review-stars span { color: var(--accent-yellow); font-size: 16px; }
.review-text { color: var(--text-secondary); font-size: 14px; line-height: 1.8; margin-bottom: 20px; }
.review-user { display: flex; align-items: center; gap: 12px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 600; color: var(--text-primary); }
.review-role { font-size: 12px; color: var(--text-muted); }

/* ---- FAQ ---- */
.faq-section { background: var(--bg-card2); }
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item.open { border-color: rgba(0,200,255,0.4); }
.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition);
}
.faq-question:hover { color: var(--neon-blue); }
.faq-icon {
  width: 24px;
  height: 24px;
  min-width: 24px;
  border: 1px solid var(--border-glow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--neon-blue);
  transition: transform var(--transition);
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 24px 20px; }

/* ---- 联系我们 ---- */
.contact-section {
  background: radial-gradient(ellipse at center, rgba(0,200,255,0.05) 0%, transparent 70%), var(--bg-deep);
}
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
}
.contact-item-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(0,200,255,0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.contact-item-body label { font-size: 12px; color: var(--text-muted); display: block; margin-bottom: 4px; }
.contact-item-body span { font-size: 15px; color: var(--text-primary); font-weight: 500; }
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.form-title { font-size: 20px; font-weight: 700; margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 8px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-glow);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 14px;
  outline: none;
  transition: all var(--transition);
  font-family: inherit;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  border-color: var(--neon-blue);
  background: rgba(0,200,255,0.04);
  box-shadow: 0 0 0 3px rgba(0,200,255,0.1);
}
.form-group textarea { height: 120px; resize: vertical; }
.form-group select option { background: var(--bg-card); }
.form-submit {
  width: 100%;
  background: var(--gradient-main);
  color: #fff;
  border: none;
  padding: 14px;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  box-shadow: 0 0 20px rgba(0,200,255,0.25);
}
.form-submit:hover { transform: translateY(-2px); box-shadow: 0 0 32px rgba(0,200,255,0.4); }

/* ---- 页脚 ---- */
.footer {
  background: #030810;
  border-top: 1px solid var(--border-glow);
  padding: 60px 0 0;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 48px; }
.footer-brand .logo { font-size: 20px; font-weight: 700; background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: 16px; display: block; }
.footer-brand p { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 20px; }
.footer-social { display: flex; gap: 12px; }
.social-btn {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-glow);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all var(--transition);
  cursor: pointer;
}
.social-btn:hover { background: rgba(0,200,255,0.1); border-color: var(--neon-blue); }
.footer-col h4 { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a { font-size: 13px; color: var(--text-muted); transition: color var(--transition); }
.footer-col ul li a:hover { color: var(--neon-blue); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.05);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 12px; color: var(--text-muted); }
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--neon-blue); }

/* ---- 面包屑 ---- */
.breadcrumb {
  padding: 16px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--neon-blue); }
.breadcrumb span { margin: 0 8px; }

/* ---- 内页Hero ---- */
.page-hero {
  padding: 80px 0 60px;
  text-align: center;
  background: radial-gradient(ellipse at center, rgba(0,200,255,0.06) 0%, transparent 70%);
  border-bottom: 1px solid var(--border-glow);
}
.page-hero h1 { font-size: clamp(28px, 4vw, 48px); font-weight: 800; margin-bottom: 16px; }
.page-hero p { color: var(--text-secondary); font-size: 16px; max-width: 600px; margin: 0 auto; }

/* ---- 数字统计 ---- */
.stats-bar {
  background: var(--bg-card2);
  border-top: 1px solid var(--border-glow);
  border-bottom: 1px solid var(--border-glow);
  padding: 32px 0;
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-item { text-align: center; }
.stat-num {
  font-size: 36px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.stat-label { font-size: 13px; color: var(--text-secondary); margin-top: 6px; }

/* ---- 合作伙伴 ---- */
.partners-bar {
  background: var(--bg-card2);
  padding: 40px 0;
  border-top: 1px solid var(--border-glow);
}
.partners-label { text-align: center; font-size: 13px; color: var(--text-muted); margin-bottom: 24px; }
.partners-logos { display: flex; justify-content: center; align-items: center; gap: 40px; flex-wrap: wrap; }
.partner-logo {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  padding: 8px 20px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 8px;
  transition: all var(--transition);
  letter-spacing: 1px;
}
.partner-logo:hover { color: var(--neon-blue); border-color: rgba(0,200,255,0.3); }

/* ---- 内页随机栏目 ---- */
.inner-nav {
  background: var(--bg-card2);
  border-bottom: 1px solid var(--border-glow);
  padding: 0;
}
.inner-nav-list {
  display: flex;
  overflow-x: auto;
  scrollbar-width: none;
}
.inner-nav-list::-webkit-scrollbar { display: none; }
.inner-nav-list a {
  padding: 16px 24px;
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.inner-nav-list a:hover, .inner-nav-list a.active {
  color: var(--neon-blue);
  border-bottom-color: var(--neon-blue);
}

/* ---- 动画 ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.animate-fade-up { animation: fadeInUp 0.6s ease forwards; }
.float-anim { animation: float 4s ease-in-out infinite; }

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-content { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { display: none; }
  .tech-grid { grid-template-columns: 1fr; }
  .tech-visual { display: none; }
  .contact-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .nav-menu { display: none; position: fixed; top: 68px; left: 0; right: 0; background: rgba(5,10,20,0.98); flex-direction: column; padding: 20px; gap: 4px; border-bottom: 1px solid var(--border-glow); }
  .nav-menu.open { display: flex; }
  .nav-toggle { display: block; }
  .process-steps { flex-direction: column; }
  .process-steps::before { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .hero-stats { gap: 20px; }
  .hero-stat-num { font-size: 24px; }
  .search-tags { display: none; }
  .partners-logos { gap: 20px; }
}
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-actions { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}

/* ---- 工具类 ---- */
.text-center { text-align: center; }
.text-gradient { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.hidden { display: none; }

/* ---- 面包屑 ---- */
.breadcrumb {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-glow);
  padding: 12px 0;
}
.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--neon-blue); }
.breadcrumb span:last-child { color: var(--neon-blue); }

/* ---- 内页Hero ---- */
.page-hero {
  padding: 72px 0 56px;
  background: linear-gradient(180deg, #0a1628 0%, var(--bg-deep) 100%);
  text-align: center;
  border-bottom: 1px solid var(--border-glow);
}
.page-hero h1 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 800;
  margin: 16px 0 20px;
  line-height: 1.2;
}
.page-hero p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ---- 内页导航 ---- */
.inner-nav {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-glow);
  position: sticky;
  top: 68px;
  z-index: 90;
}
.inner-nav-list {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.inner-nav-list::-webkit-scrollbar { display: none; }
.inner-nav-list a {
  padding: 14px 24px;
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.inner-nav-list a:hover,
.inner-nav-list a.active {
  color: var(--neon-blue);
  border-bottom-color: var(--neon-blue);
}

/* ---- 搜索栏 ---- */
.search-bar-wrap {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-glow);
  padding: 12px 0;
}
.search-bar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
.search-input-wrap {
  display: flex;
  align-items: center;
  background: var(--bg-deep);
  border: 1px solid var(--border-glow);
  border-radius: 24px;
  padding: 6px 16px;
  flex: 1;
  min-width: 200px;
  max-width: 480px;
  transition: border-color var(--transition);
}
.search-input-wrap:focus-within {
  border-color: var(--neon-blue);
}
.search-input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 14px;
  flex: 1;
  padding: 4px 8px;
}
.search-input::placeholder { color: var(--text-muted); }
.search-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  padding: 4px;
  transition: color var(--transition);
}
.search-btn:hover { color: var(--neon-blue); }
.search-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.search-tag {
  background: rgba(0,200,255,0.08);
  border: 1px solid rgba(0,200,255,0.2);
  color: var(--text-secondary);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.search-tag:hover {
  background: rgba(0,200,255,0.15);
  color: var(--neon-blue);
  border-color: var(--neon-blue);
}

/* ---- 视频卡片 ---- */
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-glow);
  transition: transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-card2);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img {
  transform: scale(1.05);
}
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.4);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .video-play-btn {
  opacity: 1;
}
.video-play-btn svg {
  width: 56px;
  height: 56px;
  fill: white;
  filter: drop-shadow(0 0 12px rgba(0,200,255,0.8));
  transform: scale(0.8);
  transition: transform var(--transition);
}
.video-card:hover .video-play-btn svg {
  transform: scale(1);
}
.video-tag {
  position: absolute;
  top: 10px;
  left: 10px;
  background: var(--gradient-main);
  color: white;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
}
.video-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.75);
  color: white;
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
}
.video-info {
  padding: 14px 16px;
}
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ---- 产品卡片 ---- */
.product-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-glow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}
.product-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-card2);
}
.product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.product-card:hover .product-img img { transform: scale(1.05); }
.product-body { padding: 20px; }
.product-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.product-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
}
.product-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.product-tag {
  background: rgba(0,200,255,0.08);
  border: 1px solid rgba(0,200,255,0.2);
  color: var(--neon-blue);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
}

/* ---- 解决方案卡片 ---- */
.solution-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border-glow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}
.solution-num {
  font-size: 40px;
  font-weight: 900;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  line-height: 1;
}
.solution-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.solution-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}
.solution-benefits { display: flex; flex-direction: column; gap: 8px; }
.solution-benefit {
  font-size: 13px;
  color: var(--text-secondary);
  padding-left: 16px;
  position: relative;
}
.solution-benefit::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--neon-cyan);
  font-weight: 700;
}

/* ---- 案例卡片 ---- */
.case-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-glow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}
.case-name {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.case-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}
.case-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.case-tag {
  background: rgba(139,92,246,0.12);
  border: 1px solid rgba(139,92,246,0.3);
  color: var(--neon-purple);
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
}

/* ---- 新闻卡片 ---- */
.news-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-glow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}
.news-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--bg-card2);
}
.news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .news-img img { transform: scale(1.05); }
.news-body { padding: 20px; }
.news-date {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.news-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 10px;
}
.news-title a { color: var(--text-primary); }
.news-title a:hover { color: var(--neon-blue); }
.news-excerpt {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-more {
  font-size: 13px;
  color: var(--neon-blue);
  font-weight: 600;
}
.news-more:hover { color: var(--neon-cyan); }

/* ---- 用户评价卡片 ---- */
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-glow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}
.review-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
}
.review-stars span { color: var(--accent-yellow); font-size: 16px; }
.review-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  font-style: italic;
}
.review-user {
  display: flex;
  align-items: center;
  gap: 12px;
}
.review-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}
.review-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}
.review-role {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ---- FAQ ---- */
.faq-list { display: flex; flex-direction: column; gap: 12px; max-width: 900px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-glow);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: var(--neon-blue); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition);
  user-select: none;
}
.faq-question:hover { color: var(--neon-blue); }
.faq-icon {
  font-size: 20px;
  color: var(--neon-blue);
  transition: transform var(--transition);
  flex-shrink: 0;
  margin-left: 16px;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  padding: 0 24px;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

/* ---- 联系表单 ---- */
.contact-section { background: var(--bg-deep); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 20px; }
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-item-icon {
  font-size: 22px;
  width: 44px;
  height: 44px;
  background: rgba(0,200,255,0.08);
  border: 1px solid var(--border-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-item-body label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.contact-item-body span {
  font-size: 14px;
  color: var(--text-primary);
}
.contact-form {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--border-glow);
}
.form-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: var(--bg-deep);
  border: 1px solid var(--border-glow);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--neon-blue);
  box-shadow: 0 0 0 3px rgba(0,200,255,0.1);
}
.form-group select { cursor: pointer; }
.form-group textarea { min-height: 120px; resize: vertical; }
.form-submit {
  width: 100%;
  padding: 14px;
  background: var(--gradient-main);
  border: none;
  border-radius: 8px;
  color: white;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity var(--transition), transform var(--transition);
}
.form-submit:hover { opacity: 0.9; transform: translateY(-1px); }

/* ---- 通用卡片 ---- */
.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border-glow);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-neon);
}
.card-icon { font-size: 36px; margin-bottom: 16px; }
.card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ---- 技术模块 ---- */
.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.tech-features { display: flex; flex-direction: column; gap: 24px; }
.tech-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-glow);
  transition: border-color var(--transition);
}
.tech-item:hover { border-color: var(--neon-blue); }
.tech-item-icon {
  font-size: 28px;
  width: 52px;
  height: 52px;
  background: rgba(0,200,255,0.08);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.tech-item-body h3 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.tech-item-body p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.tech-visual img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glow);
  box-shadow: var(--shadow-neon);
}

/* ---- 流程步骤 ---- */
.process-steps {
  display: flex;
  gap: 0;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
  z-index: 0;
}
.process-step {
  flex: 1;
  text-align: center;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}
.step-num {
  width: 64px;
  height: 64px;
  background: var(--gradient-main);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: white;
  margin: 0 auto 16px;
  box-shadow: var(--shadow-neon);
}
.step-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.step-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ---- 合作伙伴栏 ---- */
.partners-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border-glow);
  padding: 28px 0;
}
.partners-label {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.partners-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  flex-wrap: wrap;
}
.partner-logo {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition);
  cursor: default;
}
.partner-logo:hover { color: var(--text-secondary); }

/* ---- 页脚 ---- */
.footer {
  background: #030810;
  border-top: 1px solid var(--border-glow);
  padding: 56px 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand .logo {
  font-size: 20px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: 12px;
}
.footer-brand p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.footer-social { display: flex; gap: 12px; }
.social-btn {
  width: 36px;
  height: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  cursor: pointer;
  transition: all var(--transition);
}
.social-btn:hover {
  border-color: var(--neon-blue);
  background: rgba(0,200,255,0.08);
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: 13px;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--neon-blue); }
.footer-bottom {
  border-top: 1px solid var(--border-glow);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 12px;
  color: var(--text-muted);
}
.footer-bottom a {
  font-size: 12px;
  color: var(--text-muted);
}
.footer-bottom a:hover { color: var(--neon-blue); }

/* ---- 数字统计栏 ---- */
.stats-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border-glow);
  border-bottom: 1px solid var(--border-glow);
  padding: 40px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {}
.stat-num {
  font-size: 32px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ---- 章节通用 ---- */
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
  display: inline-block;
  background: rgba(0,200,255,0.1);
  border: 1px solid rgba(0,200,255,0.3);
  color: var(--neon-blue);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(24px, 4vw, 40px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.2;
}
.section-title .highlight {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---- 网格布局 ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ---- 按钮 ---- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--gradient-main);
  color: white;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,200,255,0.4);
  color: white;
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: transparent;
  color: var(--neon-blue);
  border: 1px solid var(--neon-blue);
  border-radius: 8px;
  font-size: 15px;
  font-weight: 700;
  transition: all var(--transition);
  cursor: pointer;
}
.btn-outline:hover {
  background: rgba(0,200,255,0.1);
  transform: translateY(-2px);
  color: var(--neon-blue);
}
.nav-cta {
  background: var(--gradient-main);
  color: white !important;
  padding: 8px 20px;
  border-radius: 8px;
  font-weight: 700;
}
.nav-cta:hover { opacity: 0.9; color: white !important; }

/* ---- 导航栏 ---- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5,10,20,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-glow);
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}
.logo-icon { font-size: 28px; }
.nav-logo span {
  font-size: 20px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu li a {
  padding: 8px 14px;
  font-size: 14px;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: all var(--transition);
  font-weight: 500;
}
.nav-menu li a:hover,
.nav-menu li a.active {
  color: var(--neon-blue);
  background: rgba(0,200,255,0.08);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---- Hero区域 ---- */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 50%, rgba(0,200,255,0.08) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 20%, rgba(139,92,246,0.08) 0%, transparent 60%),
              var(--bg-deep);
  z-index: 0;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(0,200,255,0.04) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(0,200,255,0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0,200,255,0.1);
  border: 1px solid rgba(0,200,255,0.3);
  color: var(--neon-blue);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-title {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--text-primary);
}
.hero-title .brand {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 480px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.hero-stat-item { text-align: left; }
.hero-stat-num {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.hero-stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}
.hero-visual { position: relative; }
.hero-video-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-glow);
  box-shadow: var(--shadow-neon);
  cursor: pointer;
}
.hero-video-card img {
  width: 100%;
  display: block;
}
.hero-video-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  transition: background var(--transition);
}
.hero-video-play:hover { background: rgba(0,0,0,0.5); }
.hero-video-play svg {
  width: 72px;
  height: 72px;
  fill: white;
  filter: drop-shadow(0 0 16px rgba(0,200,255,0.8));
}
.hero-float-badge {
  position: absolute;
  background: rgba(13,21,38,0.9);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-card);
}
.hero-float-badge.top-right { top: -16px; right: -16px; }
.hero-float-badge.bottom-left { bottom: -16px; left: -16px; }
.hero-float-badge .icon { font-size: 24px; }
.hero-float-badge .text strong {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
}
.hero-float-badge .text span {
  font-size: 11px;
  color: var(--text-muted);
}

/* ---- 动画 ---- */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}