/* ========================================
   工业互联网科技风格样式系统
   核心定位：极简科技 | 工业严谨 | 数字美学
   ======================================== */

/* ========== 1. 设计令牌系统 ========== */
:root {
  /* 色彩系统 - 工业科技配色 */
  --color-primary: #0066FF;           /* 科技蓝 - 主色调 */
  --color-primary-dark: #0052CC;      /* 深蓝 - 强调 */
  --color-primary-light: #3385FF;     /* 浅蓝 - 辅助 */
  --color-secondary: #00D4AA;         /* 数字绿 - 点缀色 */
  --color-accent: #FF6B35;            /* 警示橙 - 强调色 */
  
  /* 中性色系统 - 工业灰阶 */
  --color-neutral-900: #0A0E1A;       /* 深空灰 */
  --color-neutral-800: #1A1F2E;       /* 工业深灰 */
  --color-neutral-700: #2D3748;       /* 金属灰 */
  --color-neutral-600: #4A5568;       /* 中性灰 */
  --color-neutral-500: #718096;       /* 灰色 */
  --color-neutral-400: #A0AEC0;       /* 浅灰 */
  --color-neutral-300: #CBD5E0;       /* 极浅灰 */
  --color-neutral-200: #E2E8F0;       /* 背景灰 */
  --color-neutral-100: #F7FAFC;       /* 纯净白 */
  --color-white: #FFFFFF;
  
  /* 功能色 */
  --color-success: #00D4AA;
  --color-warning: #FFB020;
  --color-error: #FF4757;
  --color-info: #0066FF;
  
  /* 渐变系统 */
  --gradient-primary: linear-gradient(135deg, #0066FF 0%, #0052CC 100%);
  --gradient-tech: linear-gradient(135deg, #0A0E1A 0%, #1A1F2E 50%, #2D3748 100%);
  --gradient-digital: linear-gradient(90deg, #0066FF 0%, #00D4AA 100%);
  --gradient-overlay: linear-gradient(180deg, rgba(10, 14, 26, 0) 0%, rgba(10, 14, 26, 0.8) 100%);
  
  /* 字体系统 */
  --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Consolas", "Monaco", "Courier New", monospace;
  
  /* 字号系统 */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  --text-5xl: 3rem;        /* 48px */
  --text-6xl: 3.75rem;     /* 60px */
  
  /* 间距系统 */
  --space-1: 0.25rem;      /* 4px */
  --space-2: 0.5rem;       /* 8px */
  --space-3: 0.75rem;      /* 12px */
  --space-4: 1rem;         /* 16px */
  --space-5: 1.25rem;      /* 20px */
  --space-6: 1.5rem;       /* 24px */
  --space-8: 2rem;         /* 32px */
  --space-10: 2.5rem;      /* 40px */
  --space-12: 3rem;        /* 48px */
  --space-16: 4rem;        /* 64px */
  --space-20: 5rem;        /* 80px */
  --space-24: 6rem;        /* 96px */
  
  /* 圆角系统 */
  --radius-sm: 0.25rem;    /* 4px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-2xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;
  
  /* 阴影系统 - 科技感层次 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(0, 102, 255, 0.3);
  --shadow-glow-strong: 0 0 30px rgba(0, 102, 255, 0.5);
  
  /* 动画时长 */
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 350ms;
  --duration-slower: 500ms;
  
  /* 动画曲线 */
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ========== 2. 全局基础样式 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-neutral-800);
  background-color: var(--color-white);
  overflow-x: hidden;
}

/* ========== 3. 导航栏样式 ========== */
.industrial-header {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-neutral-200);
  transition: all var(--duration-base) var(--ease-out);
}

.industrial-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-md);
}

.industrial-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 600;
  font-size: var(--text-xl);
  color: var(--color-neutral-900);
  text-decoration: none;
  transition: transform var(--duration-base) var(--ease-out);
}

.industrial-logo:hover {
  transform: translateX(2px);
}

.industrial-logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-weight: 700;
  font-size: var(--text-lg);
  box-shadow: var(--shadow-glow);
}

.industrial-nav-link {
  position: relative;
  color: var(--color-neutral-700);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  transition: color var(--duration-base) var(--ease-out);
  letter-spacing: 0.02em;
}

.industrial-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-digital);
  transform: translateX(-50%);
  transition: width var(--duration-base) var(--ease-out);
}

.industrial-nav-link:hover {
  color: var(--color-primary);
}

.industrial-nav-link:hover::after,
.industrial-nav-link.active::after {
  width: 80%;
}

/* ========== 4. 英雄区样式 ========== */
.industrial-hero {
  position: relative;
  overflow: hidden;
}

.industrial-hero-content {
  position: relative;
  z-index: 1;
}

/* ========== 5. 按钮系统 ========== */
.industrial-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-lg);
  border: none;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}

.industrial-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width var(--duration-slow) var(--ease-out), height var(--duration-slow) var(--ease-out);
}

.industrial-btn:hover::before {
  width: 300px;
  height: 300px;
}

.industrial-btn-primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-glow);
}

.industrial-btn-primary:hover {
  box-shadow: var(--shadow-glow-strong);
  transform: translateY(-2px);
}

.industrial-btn-secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.industrial-btn-secondary:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.1);
}

.industrial-btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.industrial-btn-outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

/* ========== 6. 卡片系统 ========== */
.industrial-card {
  background: var(--color-white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-neutral-200);
  overflow: hidden;
  transition: all var(--duration-base) var(--ease-out);
}

.industrial-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.industrial-card-image {
  width: 100%;
  height: 240px;
  object-fit: cover;
  transition: transform var(--duration-slower) var(--ease-out);
}

.industrial-card:hover .industrial-card-image {
  transform: scale(1.05);
}

.industrial-card-content {
  padding: var(--space-6);
}

.industrial-card-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-neutral-900);
  margin-bottom: var(--space-4);
  line-height: 1.4;
}

.industrial-card-desc {
  font-size: var(--text-base);
  color: var(--color-neutral-600);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

/* ========== 7. 标签系统 ========== */
.industrial-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  letter-spacing: 0.025em;
  text-transform: none;
  transition: all 0.3s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  border: 1px solid transparent;
}

.industrial-tag:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.industrial-tag-primary {
  background: rgba(0, 102, 255, 0.1);
  color: #0066FF;
  border-color: rgba(0, 102, 255, 0.2);
}

.industrial-tag-primary:hover {
  background: rgba(0, 102, 255, 0.15);
  border-color: rgba(0, 102, 255, 0.3);
}

.industrial-tag-success {
  background: rgba(0, 212, 170, 0.1);
  color: #00D4AA;
  border-color: rgba(0, 212, 170, 0.2);
}

.industrial-tag-success:hover {
  background: rgba(0, 212, 170, 0.15);
  border-color: rgba(0, 212, 170, 0.3);
}

.industrial-tag-warning {
  background: rgba(255, 176, 32, 0.1);
  color: #FFB020;
  border-color: rgba(255, 176, 32, 0.2);
}

.industrial-tag-warning:hover {
  background: rgba(255, 176, 32, 0.15);
  border-color: rgba(255, 176, 32, 0.3);
}

/* ========== 8. 图标系统 ========== */
.industrial-icon-wrapper {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 102, 255, 0.08);
  color: var(--color-primary);
  font-size: var(--text-3xl);
  transition: all var(--duration-base) var(--ease-out);
}

.industrial-card:hover .industrial-icon-wrapper {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-glow);
}

/* ========== 9. 分隔线系统 ========== */
.industrial-divider {
  width: 60px;
  height: 4px;
  background: var(--gradient-digital);
  border-radius: var(--radius-full);
  margin: var(--space-6) auto;
}

/* ========== 10. 标题系统 ========== */
.industrial-section-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  color: var(--color-neutral-900);
  text-align: center;
  margin-bottom: var(--space-4);
  letter-spacing: -0.02em;
}

.industrial-section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-neutral-600);
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-12);
  line-height: 1.8;
}

/* ========== 11. 网格系统 ========== */
.industrial-grid {
  display: grid;
  gap: var(--space-8);
}

.industrial-grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.industrial-grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.industrial-grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ========== 12. 页脚样式 ========== */
.industrial-footer {
  background: var(--gradient-tech);
  color: var(--color-neutral-300);
  padding: var(--space-20) 0 var(--space-8);
  position: relative;
}

.industrial-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-digital);
}

.industrial-footer-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-6);
}

.industrial-footer-link {
  color: var(--color-neutral-400);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-out);
  font-size: var(--text-sm);
}

.industrial-footer-link:hover {
  color: var(--color-primary);
}

/* ========== 13. 动画效果 ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.industrial-animate-fade-in-up {
  animation: fadeInUp var(--duration-slow) var(--ease-out);
}

/* ========== 14. 响应式设计 ========== */

/* 业务范围/产品网格 - 固定三列 */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }
}

@media (max-width: 768px) {
  :root {
    --text-5xl: 2.25rem;
    --text-4xl: 1.875rem;
    --text-3xl: 1.5rem;
  }
  
  .industrial-hero {
    min-height: 500px;
  }
  
  .industrial-grid-2,
  .industrial-grid-3,
  .industrial-grid-4 {
    grid-template-columns: 1fr;
  }
  
  .products-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}

/* ========== 15. 工具类 ========== */
.industrial-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.industrial-section {
  padding: var(--space-8) 0;
}

.industrial-text-gradient {
  background: var(--gradient-digital);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.industrial-bg-dark {
  background: var(--gradient-tech);
}

.industrial-bg-light {
  background: var(--color-neutral-100);
}

/* ========== 16. 客户Logo展示样式 ========== */
.client-logo-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.client-logo-item {
  display: flex;
  flex-direction: column;
}

.client-logo-box {
  width: 100%;
  min-height: 180px;
  background: var(--color-white);
  border: 1px solid var(--color-neutral-200);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-6);
  transition: all var(--duration-base) var(--ease-out);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.client-logo-box:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.client-logo-img {
  max-width: 70%;
  max-height: 100px;
  width: auto;
  height: auto;
  object-fit: contain;
  transition: transform var(--duration-base) var(--ease-out);
  flex-shrink: 0;
  margin: auto 0;
}

.client-logo-box:hover .client-logo-img {
  transform: scale(1.08);
}

.client-logo-placeholder {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-neutral-600);
  text-align: center;
  transition: color var(--duration-base) var(--ease-out);
}

.client-logo-box:hover .client-logo-placeholder {
  color: var(--color-primary);
}

.client-logo-more {
  background: rgba(0, 102, 255, 0.05);
  position: relative;
  justify-content: center;
}

.client-logo-more:hover {
  background: rgba(0, 102, 255, 0.1);
}

.more-icon-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: auto 0;
}

.more-icon-wrapper .fa-circle {
  font-size: 5rem;
  color: var(--color-primary);
  opacity: 0.15;
  transition: all var(--duration-base) var(--ease-out);
}

.client-logo-more:hover .fa-circle {
  opacity: 0.25;
}

.more-dots {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.more-dots .dot {
  width: 0.5rem;
  height: 0.5rem;
  background: var(--color-primary);
  border-radius: 50%;
  opacity: 0.8;
  transition: all var(--duration-base) var(--ease-out);
}

.client-logo-more:hover .dot {
  opacity: 1;
  transform: scale(1.2);
}

.client-name {
  font-size: var(--text-sm);
  color: var(--color-neutral-600);
  text-align: center;
  font-weight: 500;
  width: 100%;
  flex-shrink: 0;
}

.client-logo-box:hover .client-name {
  color: var(--color-primary);
}

/* 响应式布局 */
@media (max-width: 1024px) {
  .client-logo-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
  }
}

@media (max-width: 768px) {
  .client-logo-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
  
  .client-logo-box {
    min-height: 160px;
  }
  
  .client-logo-placeholder {
    font-size: var(--text-base);
  }
  
  .client-logo-img {
    max-width: 75%;
    max-height: 90px;
  }
}

@media (max-width: 480px) {
  .client-logo-grid {
    grid-template-columns: 1fr;
  }
}

/* ========== 17. 客服电话悬浮组件 ========== */

/* 移动端底部悬浮电话条 */
.mobile-phone-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--gradient-primary);
  color: var(--color-white);
  padding: 1rem 1.5rem;
  text-decoration: none;
  font-weight: 600;
  font-size: var(--text-base);
  box-shadow: 0 -4px 12px rgba(0, 102, 255, 0.3);
  z-index: 9998;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  transition: all var(--duration-base) var(--ease-out);
}

.mobile-phone-bar:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 -6px 16px rgba(0, 102, 255, 0.4);
}

.mobile-phone-bar i {
  font-size: 1.25rem;
  animation: phoneRing 1.5s ease-in-out infinite;
}

/* PC端悬浮球 */
.pc-float-ball {
  display: none;
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 9998;
}

.float-ball-btn {
  background: var(--gradient-primary);
  border-radius: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  color: var(--color-white);
  font-size: 0.875rem;
  text-decoration: none;
  box-shadow: var(--shadow-lg), 0 0 15px rgba(0, 102, 255, 0.25);
  transition: all var(--duration-base) var(--ease-out);
  cursor: pointer;
  white-space: nowrap;
  font-weight: 600;
}

.float-ball-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl), 0 0 20px rgba(0, 102, 255, 0.4);
  background: var(--color-primary-dark);
}

.float-ball-btn i {
  font-size: 1.1rem;
  animation: phoneRing 1.5s ease-in-out infinite;
}

.float-ball-text {
  font-size: 0.875rem;
  letter-spacing: 0.02em;
}

/* 电话图标动画 */
@keyframes phoneRing {
  0%, 100% {
    transform: rotate(0deg);
  }
  10%, 30% {
    transform: rotate(-15deg);
  }
  20%, 40% {
    transform: rotate(15deg);
  }
  50% {
    transform: rotate(0deg);
  }
}

/* 响应式显示控制 */
@media (max-width: 768px) {
  /* 移动端显示底部电话条 */
  .mobile-phone-bar {
    display: flex !important;
  }
  
  /* 移动端隐藏PC悬浮球 */
  .pc-float-ball {
    display: none !important;
  }
  
  /* 为底部电话条预留空间，避免遮挡页脚内容 */
  .industrial-footer {
    padding-bottom: calc(var(--space-8) + 60px);
  }
}

@media (min-width: 769px) {
  /* PC端隐藏移动端电话条 */
  .mobile-phone-bar {
    display: none !important;
  }
  
  /* PC端显示悬浮球 */
  .pc-float-ball {
    display: block !important;
  }
}