/* ===== 腾智官网首页专属样式 ===== */

/* ===== Hero Section ===== */
.tengzhi-hero {
  position: relative;
  width: 100%;
  min-height: 600px;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 28px;
  padding: 60px 120px 100px;
  text-align: center;
  overflow: hidden;
}
/* Carousel background layer */
.tengzhi-hero-slides {
  position: absolute; inset: 0; z-index: 0;
}
.tengzhi-hero-slide {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
}
.tengzhi-hero-slide.tengzhi-active { opacity: 1; }
.tengzhi-hero::before {
  content: ''; position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(135deg, rgba(120,201,80,0.7) 0%, rgba(0,0,0,0.6) 100%);
}
.tengzhi-hero > *:not(.tengzhi-hero-slides) { position: relative; z-index: 2; }
.tengzhi-hero-title {
  font-size: 48px; font-weight: 800; color: #fff;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3);
  letter-spacing: 2px;
}
.tengzhi-hero-subtitle {
  font-size: 22px;
  color: rgba(255,255,255,0.95);
  max-width: 900px;
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-weight: 500;
  letter-spacing: 1px;
  line-height: 1.8;
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}
.tengzhi-value-pillars {
  display: flex; align-items: center; gap: 20px;
  flex-wrap: wrap; justify-content: center;
  margin-top: 10px;
}
.tengzhi-value-pillars .tengzhi-pillar {
  display: flex; align-items: center; gap: 10px;
  color: #fff; font-size: 18px; font-weight: 600;
  padding: 8px 20px;
  background: rgba(255,255,255,0.15);
  border-radius: 30px;
  backdrop-filter: blur(10px);
}
.tengzhi-value-pillars .tengzhi-pillar svg { width: 22px; height: 22px; color: var(--accent-color); }
.tengzhi-value-pillars .tengzhi-sep { color: rgba(255,255,255,0.5); font-size: 28px; font-weight: 300; }
.tengzhi-cta-buttons { 
  display: flex; gap: 20px; flex-wrap: wrap; justify-content: center;
  margin-top: 10px;
}
.tengzhi-btn-primary {
  padding: 16px 40px; border-radius: 30px;
  background: var(--accent-color); color: #333;
  font-size: 16px; font-weight: 700;
  border: none; cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(255,216,90,0.4);
}
.tengzhi-btn-primary:hover { 
  background: #ffed4a;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,216,90,0.5);
}
.tengzhi-btn-secondary-outline {
  padding: 16px 40px; border-radius: 30px;
  background: transparent; color: #fff;
  font-size: 16px; font-weight: 600;
  border: 2px solid rgba(255,255,255,0.8);
  cursor: pointer; transition: all 0.3s;
}
.tengzhi-btn-secondary-outline:hover { 
  background: rgba(255,255,255,0.15);
  border-color: #fff;
  transform: translateY(-2px);
}
.tengzhi-hero .tengzhi-carousel-dots {
  display: flex; gap: 12px; align-items: center;
  position: absolute !important; bottom: 30px;
  left: 0; right: 0; justify-content: center;
  z-index: 3;
}
.tengzhi-carousel-dots .tengzhi-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all 0.3s;
}
.tengzhi-carousel-dots .tengzhi-dot.tengzhi-active { 
  width: 32px; 
  border-radius: 5px;
  background: var(--accent-color); 
}

/* ===== Section Common ===== */
.tengzhi-section-pad {
  padding: 100px 120px;
}
.tengzhi-section-header {
  display: flex; flex-direction: column; align-items: center; gap: 16px;
  margin-bottom: 60px; text-align: center;
}
.tengzhi-section-badge {
  display: inline-block; padding: 8px 20px;
  border-radius: 20px; background: rgba(120,201,80,0.1);
  color: var(--primary-color); font-size: 13px; font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase;
  border: 1px solid rgba(120,201,80,0.3);
}
.tengzhi-section-title {
  font-size: 40px; font-weight: 700; color: #1a1a1a;
  letter-spacing: 1px;
}
.tengzhi-section-subtitle {
  font-size: 17px; font-weight: 400; color: var(--text-light);
  max-width: 700px;
  line-height: 1.7;
}

/* ===== Section - 核心优势 ===== */
.tengzhi-section-advantages { background: linear-gradient(180deg, #f8faf7 0%, #ffffff 100%); }
.tengzhi-advantage-cards {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.tengzhi-advantage-card {
  background: #fff; border-radius: 16px;
  border: 1px solid var(--secondary-color);
  padding: 40px 28px;
  display: flex; flex-direction: column; align-items: center;
  text-align: center; gap: 20px;
  min-height: 320px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}
.tengzhi-advantage-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  transform: scaleX(0);
  transition: transform 0.3s;
}
.tengzhi-advantage-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(120,201,80,0.15);
  border-color: var(--primary-color);
}
.tengzhi-advantage-card:hover::before {
  transform: scaleX(1);
}
.tengzhi-advantage-icon {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(120,201,80,0.15) 0%, rgba(255,216,90,0.15) 100%);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary-color);
  transition: all 0.3s;
}
.tengzhi-advantage-card:hover .tengzhi-advantage-icon {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  color: #fff;
  transform: scale(1.1);
}
.tengzhi-advantage-icon svg { width: 36px; height: 36px; }
.tengzhi-advantage-title { 
  font-size: 20px; font-weight: 700; color: #1a1a1a;
  letter-spacing: 0.5px;
}
.tengzhi-advantage-desc { 
  font-size: 14px; color: var(--text-light); 
  line-height: 1.7;
}

/* ===== Section - 解决方案 ===== */
.tengzhi-section-solutions { background: #fff; }
.tengzhi-solution-tabs {
  display: flex; justify-content: center; gap: 12px;
  margin-bottom: 48px; flex-wrap: wrap;
}
.tengzhi-solution-tab {
  padding: 12px 28px;
  border-radius: 25px;
  background: var(--secondary-color);
  color: var(--text-dark);
  font-size: 15px; font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  border: 2px solid transparent;
}
.tengzhi-solution-tab:hover {
  background: rgba(120,201,80,0.2);
  color: var(--primary-color);
}
.tengzhi-solution-tab.tengzhi-active {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
}
.tengzhi-solution-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.tengzhi-solution-card {
  background: #fff; border-radius: 16px;
  border: 1px solid var(--secondary-color);
  overflow: hidden;
  display: flex; flex-direction: column;
  min-height: 420px;
  transition: all 0.3s;
}
.tengzhi-solution-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.1);
  border-color: var(--primary-color);
}
.tengzhi-solution-card .tengzhi-card-img {
  height: 200px; width: 100%;
  object-fit: cover;
  flex-shrink: 0;
  display: block;
  transition: transform 0.5s;
}
.tengzhi-solution-card:hover .tengzhi-card-img {
  transform: scale(1.05);
}
.tengzhi-solution-card .tengzhi-card-body {
  padding: 28px; flex: 1;
  display: flex; flex-direction: column;
  justify-content: space-between;
  gap: 16px;
}
.tengzhi-card-tag {
  display: inline-block; padding: 6px 14px;
  border-radius: 6px; background: rgba(120,201,80,0.1);
  color: var(--primary-color); font-size: 13px; font-weight: 600;
  width: fit-content;
}
.tengzhi-card-pain {
  font-size: 14px; color: var(--text-light); line-height: 1.6;
}
.tengzhi-card-solution {
  font-size: 15px; color: var(--text-dark); font-weight: 600; line-height: 1.6;
}
.tengzhi-card-divider {
  width: 100%; height: 1px; background: var(--secondary-color);
}
.tengzhi-card-kpi {
  display: flex; align-items: center; gap: 10px;
}
.tengzhi-card-kpi .tengzhi-kpi-num {
  font-size: 32px; font-weight: 800; color: var(--primary-color);
}
.tengzhi-card-kpi .tengzhi-kpi-label {
  font-size: 13px; color: var(--text-light);
}

/* ===== Section - 产品矩阵（浅色清爽设计）===== */
.tengzhi-section-products { 
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 50%, #f1f5f9 100%);
  position: relative;
  overflow: hidden;
}
.tengzhi-section-products::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(120,201,80,0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255,216,90,0.04) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, rgba(120,201,80,0.03) 0%, transparent 50%);
  pointer-events: none;
}
.tengzhi-section-products .tengzhi-section-title {
  color: #1a1a1a;
}
.tengzhi-section-products .tengzhi-section-subtitle {
  color: var(--text-light);
}

.tengzhi-product-showcase {
  display: grid; 
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}

.tengzhi-product-item {
  perspective: 1000px;
}

.tengzhi-product-card {
  position: relative;
  background: #ffffff;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 12px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}

/* 发光效果（浅色版本） */
.tengzhi-product-glow {
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, 
    var(--primary-color), 
    transparent, 
    var(--accent-color), 
    transparent);
  border-radius: 12px;
  opacity: 0;
  z-index: -1;
  transition: opacity 0.4s;
  filter: blur(15px);
}

.tengzhi-product-card:hover .tengzhi-product-glow {
  opacity: 0.4;
}

/* 角落装饰 */
.tengzhi-product-corner {
  position: absolute;
  width: 20px;
  height: 20px;
  z-index: 2;
}

.tengzhi-corner-tl {
  top: 0;
  left: 0;
  border-top: 2px solid var(--primary-color);
  border-left: 2px solid var(--primary-color);
}

.tengzhi-corner-tr {
  top: 0;
  right: 0;
  border-top: 2px solid var(--primary-color);
  border-right: 2px solid var(--primary-color);
}

.tengzhi-corner-bl {
  bottom: 0;
  left: 0;
  border-bottom: 2px solid var(--primary-color);
  border-left: 2px solid var(--primary-color);
}

.tengzhi-corner-br {
  bottom: 0;
  right: 0;
  border-bottom: 2px solid var(--primary-color);
  border-right: 2px solid var(--primary-color);
}

.tengzhi-product-card:hover .tengzhi-product-corner {
  width: 30px;
  height: 30px;
  transition: all 0.3s;
}

/* 图片包装器 */
.tengzhi-product-image-wrapper {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.tengzhi-product-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.tengzhi-product-card:hover .tengzhi-product-img {
  transform: scale(1.08);
}

/* 图片覆盖层（浅色版本） */
.tengzhi-product-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, 
    transparent 0%, 
    rgba(0,0,0,0.3) 100%);
  opacity: 0.3;
  transition: opacity 0.3s;
}

.tengzhi-product-card:hover .tengzhi-product-overlay {
  opacity: 0.2;
}

/* 扫描线动画 */
.tengzhi-product-scan-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, 
    transparent, 
    var(--primary-color), 
    transparent);
  opacity: 0;
  animation: tengzhi-scan 3s linear infinite;
}

.tengzhi-product-card:hover .tengzhi-product-scan-line {
  opacity: 0.8;
}

@keyframes tengzhi-scan {
  0% {
    top: 0;
  }
  100% {
    top: 100%;
  }
}

/* 内容区域 */
.tengzhi-product-content {
  padding: 20px;
  position: relative;
}

/* 头部：标签和图标 */
.tengzhi-product-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.tengzhi-product-tag {
  display: inline-block; 
  padding: 5px 12px;
  border-radius: 20px; 
  font-size: 11px; 
  font-weight: 600;
  letter-spacing: 0.5px;
  border: 1px solid;
}

.tengzhi-product-tag.tengzhi-green { 
  background: rgba(120,201,80,0.12); 
  color: var(--primary-color);
  border-color: rgba(120,201,80,0.25);
}

.tengzhi-product-tag.tengzhi-yellow { 
  background: rgba(255,216,90,0.15); 
  color: #d4a800;
  border-color: rgba(255,216,90,0.3);
}

.tengzhi-product-tag.tengzhi-gray { 
  background: rgba(226,226,226,0.3); 
  color: var(--text-light);
  border-color: rgba(226,226,226,0.4);
}

.tengzhi-product-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(120,201,80,0.08);
  border: 1px solid rgba(120,201,80,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  transition: all 0.3s;
}

.tengzhi-product-card:hover .tengzhi-product-icon {
  background: var(--primary-color);
  color: #fff;
  transform: rotate(360deg);
}

.tengzhi-product-icon svg {
  width: 18px;
  height: 18px;
}

/* 标题和描述（浅色版本） */
.tengzhi-product-title { 
  font-size: 17px; 
  font-weight: 700; 
  color: #1a1a1a;
  margin-bottom: 10px;
  letter-spacing: 0.3px;
  line-height: 1.4;
}

.tengzhi-product-desc { 
  font-size: 13px; 
  color: var(--text-light); 
  line-height: 1.6;
  margin-bottom: 16px;
}

/* 特性列表（浅色版本） */
.tengzhi-product-features {
  margin-bottom: 16px;
}

.tengzhi-feature-item {
  display: flex; 
  align-items: center; 
  gap: 8px;
  color: var(--text-dark); 
  font-size: 12px;
  padding: 6px 10px;
  background: rgba(120,201,80,0.06);
  border-radius: 6px;
  border-left: 2px solid var(--primary-color);
}

.tengzhi-feature-item svg { 
  width: 14px; 
  height: 14px;
  color: var(--primary-color);
}

/* 科技线条（浅色版本） */
.tengzhi-product-tech-line {
  height: 1px;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(120,201,80,0.3), 
    transparent);
  margin: 16px 0;
  position: relative;
}

.tengzhi-product-tech-line::before {
  content: '';
  position: absolute;
  top: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 5px;
  height: 5px;
  background: var(--primary-color);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(120,201,80,0.5);
}

/* 链接按钮 */
.tengzhi-product-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-color);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s;
  position: relative;
}

.tengzhi-product-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s;
}

.tengzhi-product-link:hover {
  color: var(--accent-color);
  gap: 12px;
}

.tengzhi-product-link:hover::after {
  width: 100%;
}

.tengzhi-product-link svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s;
}

.tengzhi-product-link:hover svg {
  transform: translateX(4px);
}

/* 悬停效果（浅色版本） */
.tengzhi-product-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary-color);
  box-shadow: 
    0 12px 24px rgba(120,201,80,0.15),
    0 0 20px rgba(120,201,80,0.08);
}

/* ===== Section - 数据亮点 ===== */
.tengzhi-section-stats { 
  background: linear-gradient(135deg, var(--primary-color) 0%, #5ab840 100%);
  padding: 80px 120px;
}
.tengzhi-stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}
.tengzhi-stat-item {
  text-align: center;
  color: #fff;
}
.tengzhi-stat-number {
  font-size: 56px; font-weight: 800;
  margin-bottom: 12px;
  text-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.tengzhi-stat-label {
  font-size: 16px; font-weight: 500;
  opacity: 0.95;
  letter-spacing: 1px;
}

/* ===== Section - 客户案例 ===== */
.tengzhi-section-cases { 
  background: linear-gradient(180deg, #f8fafc 0%, #ffffff 50%, #f1f5f9 100%);
  position: relative;
}
.tengzhi-section-cases::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(120,201,80,0.03) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(255,216,90,0.03) 0%, transparent 50%);
  pointer-events: none;
}
.tengzhi-case-cards {
  display: grid; 
  grid-template-columns: repeat(4, 1fr);
  gap: 24px; 
  margin-bottom: 60px;
  position: relative;
  z-index: 1;
}
.tengzhi-case-card {
  background: #ffffff;
  border-radius: 12px;
  border: 1px solid rgba(0,0,0,0.08);
  overflow: hidden;
  min-height: 520px;
  display: flex; 
  flex-direction: column;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
}
.tengzhi-case-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px rgba(120,201,80,0.15);
  border-color: var(--primary-color);
}
.tengzhi-case-card .tengzhi-case-img {
  height: 180px; 
  width: 100%; 
  object-fit: cover;
  transition: transform 0.5s;
}
.tengzhi-case-card:hover .tengzhi-case-img {
  transform: scale(1.08);
}
.tengzhi-case-card .tengzhi-case-body {
  padding: 24px; 
  flex: 1;
  display: flex; 
  flex-direction: column;
  gap: 14px;
}
.tengzhi-case-name {
  font-size: 16px; 
  font-weight: 700; 
  color: #1a1a1a; 
  line-height: 1.5;
  min-height: 48px;
}
.tengzhi-case-row {
  display: flex; 
  gap: 8px; 
  align-items: flex-start;
}
.tengzhi-case-label {
  display: inline-flex; 
  align-items: center; 
  justify-content: center;
  padding: 4px 10px; 
  border-radius: 4px;
  font-size: 11px; 
  font-weight: 700; 
  color: #fff;
  flex-shrink: 0; 
  line-height: 1.4;
  min-width: 45px;
  letter-spacing: 0.5px;
}
.tengzhi-case-label.tengzhi-problem { 
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}
.tengzhi-case-label.tengzhi-solution { 
  background: linear-gradient(135deg, var(--primary-color) 0%, #5ab840 100%);
}
.tengzhi-case-row-text { 
  font-size: 13px; 
  color: var(--text-light); 
  line-height: 1.6;
}
.tengzhi-card-divider {
  width: 100%; 
  height: 1px; 
  background: linear-gradient(90deg, 
    transparent, 
    rgba(120,201,80,0.3), 
    transparent);
  margin: 8px 0;
}
.tengzhi-case-kpis { 
  display: flex; 
  gap: 16px; 
  margin-top: auto;
  padding-top: 12px;
}
.tengzhi-case-kpi-item { 
  flex: 1; 
  text-align: center;
  padding: 10px 8px;
  background: rgba(120,201,80,0.05);
  border-radius: 8px;
  border: 1px solid rgba(120,201,80,0.1);
}
.tengzhi-case-kpi-num { 
  font-size: 24px; 
  font-weight: 800; 
  color: var(--primary-color);
  line-height: 1.2;
}
.tengzhi-case-kpi-label { 
  font-size: 11px; 
  color: var(--text-light); 
  margin-top: 4px;
  font-weight: 500;
}

/* Testimonial */
.tengzhi-testimonial {
  padding: 40px 48px;
  background: linear-gradient(135deg, rgba(120,201,80,0.08) 0%, rgba(255,216,90,0.08) 100%);
  border: 2px solid rgba(120,201,80,0.2);
  border-radius: 16px;
  display: flex; align-items: center; gap: 28px;
}
.tengzhi-testimonial .tengzhi-quote-mark {
  font-size: 80px; font-weight: 700;
  color: rgba(120,201,80,0.2);
  line-height: 0.6; flex-shrink: 0;
}
.tengzhi-quote-body { display: flex; flex-direction: column; gap: 16px; }
.tengzhi-quote-text {
  font-size: 16px; font-style: italic; color: #444;
  line-height: 1.8;
}
.tengzhi-quote-author { font-size: 14px; font-weight: 600; color: var(--text-light); }

/* ===== Section - 合作伙伴 ===== */
.tengzhi-section-partners {
  background: var(--secondary-color);
  padding: 80px 0;
  overflow: hidden;
}
.tengzhi-partners-title {
  text-align: center; margin-bottom: 50px;
}
.tengzhi-marquee-wrapper {
  position: relative; width: 100%;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 10%, #000 90%, transparent 100%);
  mask-image: linear-gradient(to right, transparent 0%, #000 10%, #000 90%, transparent 100%);
}
.tengzhi-marquee-track {
  display: flex; align-items: center;
  width: max-content;
  animation: tengzhi-marquee-scroll 40s linear infinite;
}
.tengzhi-marquee-track:hover { animation-play-state: paused; }
.tengzhi-marquee-item {
  flex-shrink: 0;
  height: 60px;
  margin: 0 40px;
  display: flex; align-items: center;
  transition: transform 0.3s;
}
.tengzhi-marquee-item:hover { transform: scale(1.15); }
.tengzhi-marquee-item img {
  height: 100%; width: auto; max-width: 180px;
  object-fit: contain;
}
@keyframes tengzhi-marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
/* Second row: reverse direction */
.tengzhi-marquee-track.tengzhi-reverse {
  animation: tengzhi-marquee-scroll-reverse 35s linear infinite;
}
@keyframes tengzhi-marquee-scroll-reverse {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0); }
}

/* ===== CTA Section ===== */
.tengzhi-section-cta {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 80px 60px;
    text-align: center;
}
.tengzhi-cta-content {
  max-width: 800px; margin: 0 auto;
}
.tengzhi-cta-title {
  font-size: 42px; font-weight: 800; color: #fff;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.tengzhi-cta-subtitle {
  font-size: 18px; color: rgba(255,255,255,0.8);
  margin-bottom: 40px;
  line-height: 1.7;
}
.tengzhi-cta-btn-group {
  display: flex; gap: 20px; justify-content: center; flex-wrap: wrap;
}
.tengzhi-cta-btn-primary {
  padding: 18px 48px; border-radius: 30px;
  background: var(--accent-color); color: #333;
  font-size: 17px; font-weight: 700;
  border: none; cursor: pointer;
  transition: all 0.3s;
  box-shadow: 0 6px 20px rgba(255,216,90,0.4);
}
.tengzhi-cta-btn-primary:hover {
  background: #ffed4a;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(255,216,90,0.5);
}
.tengzhi-cta-btn-secondary {
  padding: 18px 48px; border-radius: 30px;
  background: transparent; color: #fff;
  font-size: 17px; font-weight: 600;
  border: 2px solid rgba(255,255,255,0.6);
  cursor: pointer; transition: all 0.3s;
}
.tengzhi-cta-btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  transform: translateY(-3px);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
.tengzhi-animate-on-scroll {
  opacity: 0; transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.tengzhi-animate-on-scroll.visible {
  opacity: 1; transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
  .tengzhi-section-pad { padding: 80px 40px; }
  .tengzhi-hero { padding: 60px 40px 80px; min-height: 500px; }
  .tengzhi-hero-title { font-size: 40px; }
  .tengzhi-advantage-cards { grid-template-columns: repeat(2, 1fr); }
  .tengzhi-solution-grid { grid-template-columns: repeat(2, 1fr); }
  .tengzhi-product-showcase { grid-template-columns: repeat(2, 1fr); }
  .tengzhi-case-cards { grid-template-columns: repeat(2, 1fr); }
  .tengzhi-stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .tengzhi-section-stats { padding: 60px 40px; }
  .tengzhi-section-cta { padding: 80px 40px; }
}

@media (max-width: 960px) {
  .tengzhi-hero { min-height: 450px; padding: 50px 30px 70px; }
  .tengzhi-hero-title { font-size: 36px; }
  .tengzhi-hero-subtitle { font-size: 18px; }
  .tengzhi-section-pad { padding: 60px 30px; }
  .tengzhi-section-title { font-size: 32px; }
  .tengzhi-advantage-cards { grid-template-columns: 1fr; }
  .tengzhi-solution-grid { grid-template-columns: 1fr; }
  .tengzhi-product-showcase { grid-template-columns: 1fr; }
  .tengzhi-case-cards { grid-template-columns: 1fr; }
  .tengzhi-stats-grid { grid-template-columns: 1fr; }
  .tengzhi-testimonial { flex-direction: column; align-items: flex-start; }
  .tengzhi-product-image-wrapper { height: 200px; }
  .tengzhi-section-cta { padding: 60px 30px; }
  .tengzhi-cta-title { font-size: 32px; }
  
  /* 客户案例移动端优化 */
  .tengzhi-case-card { min-height: auto; }
  .tengzhi-case-img { height: 160px; }
}

@media (max-width: 768px) {
  .tengzhi-hero { min-height: 400px; padding: 40px 20px 60px; }
  .tengzhi-hero-title { font-size: 30px; }
  .tengzhi-hero-subtitle { font-size: 16px; letter-spacing: 0.5px; }
  .tengzhi-value-pillars .tengzhi-sep { display: none; }
  .tengzhi-value-pillars .tengzhi-pillar { font-size: 15px; padding: 6px 14px; }
  .tengzhi-section-pad { padding: 50px 20px; }
  .tengzhi-section-title { font-size: 28px; }
  .tengzhi-section-subtitle { font-size: 15px; }
  .tengzhi-solution-tabs { gap: 8px; }
  .tengzhi-solution-tab { padding: 10px 20px; font-size: 14px; }
  .tengzhi-stat-number { font-size: 42px; }
  .tengzhi-testimonial { padding: 28px 24px; }
  .tengzhi-quote-text { font-size: 15px; }
  .tengzhi-marquee-item { height: 45px; margin: 0 24px; }
  .tengzhi-section-partners { padding: 50px 0; }
  .tengzhi-section-cta { padding: 50px 20px; }
  .tengzhi-cta-title { font-size: 28px; }
  .tengzhi-cta-subtitle { font-size: 16px; }
  .tengzhi-cta-btn-group { flex-direction: column; align-items: stretch; }
  .tengzhi-cta-btn-primary, .tengzhi-cta-btn-secondary { width: 100%; }
  
  /* 产品矩阵移动端优化 */
  .tengzhi-product-content { padding: 18px; }
  .tengzhi-product-title { font-size: 16px; }
  .tengzhi-product-desc { font-size: 12px; }
  .tengzhi-product-image-wrapper { height: 180px; }
  .tengzhi-feature-item { font-size: 11px; padding: 5px 8px; }
  
  /* 客户案例移动端进一步优化 */
  .tengzhi-case-body { padding: 20px; }
  .tengzhi-case-name { font-size: 15px; min-height: 45px; }
  .tengzhi-case-row-text { font-size: 12px; }
  .tengzhi-case-kpi-num { font-size: 20px; }
  .tengzhi-case-kpi-label { font-size: 10px; }
}