/*
 * 超跃智能企业官网样式表
 * AI智能体解决方案专家
 * 参考website3风格
 */

/* ========== 基础变量 ========== */
:root {
  --orange: #FF6B35;
  --coral: #FF8C69;
  --deep-blue: #1E3A8A;
  --electric-purple: #7C3AED;
  --light-gray: #F7FAFC;
  --primary-color: var(--deep-blue);
  --primary-light: #3B82F6;
  --primary-dark: #1E3A8A;
  --secondary-color: var(--orange);
  --accent-color: var(--electric-purple);
  --text-primary: #1F2937;
  --text-secondary: #6B7280;
  --text-light: #9CA3AF;
  --bg-white: #FFFFFF;
  --bg-light: #F8FAFC;
  --bg-dark: #1e293b;
  --border-color: #E5E7EB;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --transition: all 0.3s ease;
  /* 渐变背景变量 */
  --gradient-primary: linear-gradient(135deg, var(--deep-blue) 0%, var(--electric-purple) 100%);
  --gradient-accent: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  --gradient-orange: linear-gradient(135deg, var(--orange), var(--coral));
  --gradient-reverse: linear-gradient(135deg, var(--electric-purple) 0%, var(--deep-blue) 100%);
  /* SVG星星背景 */
  --stars-pattern: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-white);
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ========== 基础组件类 ========== */
/* 卡片基础样式 */
.card-base {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.card-base:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

/* 图标基础样式 */
.icon-base {
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-circle {
  border-radius: 50%;
}

/* ========== 容器 ========== */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 40px;
  }
}

/* ========== 导航栏 ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 40px;
  max-width: auto;
  object-fit: contain;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-orange);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 18px;
}

.nav-menu {
  display: none;
  align-items: center;
  gap: 32px;
}

@media (min-width: 1024px) {
  .nav-menu {
    display: flex;
  }
}

.nav-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 0;
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--primary-color);
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

@media (min-width: 1024px) {
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ========== 移动端菜单 ========== */
.mobile-menu {
  display: none;
  position: fixed;
  top: 60px;
  left: 0;
  right: 0;
  background: var(--bg-white);
  padding: 20px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
}

.mobile-menu.active {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 12px 0;
  font-size: 16px;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

.mobile-menu a:last-child {
  border-bottom: none;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: var(--gradient-orange);
  color: white;
  box-shadow: 0 4px 15px rgba(255,107,53,0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,107,53,0.4);
}

.btn-secondary {
  background: var(--bg-white);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

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

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid white;
}

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

.btn-lg {
  padding: 16px 32px;
  font-size: 17px;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 14px;
}

/* ========== Hero 区域 ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-primary);
  overflow: hidden;
  padding-top: 60px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--stars-pattern);
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50px;
  font-size: 14px;
  color: white;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--secondary-color);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

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

.hero-title {
  font-size: 36px;
  font-weight: 800;
  color: white;
  line-height: 1.2;
  margin-bottom: 20px;
}

@media (min-width: 768px) {
  .hero-title {
    font-size: 48px;
  }
}

@media (min-width: 1024px) {
  .hero-title {
    font-size: 56px;
  }
}

.hero-title span {
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
  max-width: 600px;
}

@media (min-width: 768px) {
  .hero-subtitle {
    font-size: 20px;
  }
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
  .hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--orange);
  margin-bottom: 4px;
}

@media (min-width: 768px) {
  .stat-number {
    font-size: 40px;
  }
}

.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
}

/* ========== 区块通用样式 ========== */
.section {
  padding: 36px 0;
}

@media (min-width: 768px) {
  .section {
    padding: 42px 0;
  }
}

.section-header {
  text-align: center;
  margin-bottom: 24px;
}

.section-badge {
  display: inline-block;
  padding: 5px 14px;
  background: var(--gradient-orange);
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(255, 140, 105, 0.1));
  color: var(--orange);
  font-size: 12px;
  font-weight: 600;
  border-radius: 50px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-title {
  font-size: 26px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 15px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ========== 核心业务 ========== */
.services {
  background: var(--bg-light);
}

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.service-card {
  background: var(--bg-white);
  padding: 32px;
  border-radius: var(--radius-lg);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

/* 图标样式统一：service-icon, advantage-icon, scenario-icon, contact-icon, case-icon */
.service-icon,
.scenario-icon,
.case-icon,
.contact-icon {
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.service-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  font-size: 28px;
  margin-bottom: 20px;
}

.advantage-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.1), rgba(59, 130, 246, 0.1));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--orange);
}

.scenario-icon,
.case-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  border-radius: 50%;
}

.scenario-icon {
  font-size: 32px;
}

.case-icon {
  font-size: 28px;
}

.contact-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  font-size: 18px;
}

.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.service-card p {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary-color);
  font-weight: 600;
  font-size: 14px;
}

.service-link:hover {
  gap: 10px;
}

/* ========== 技术优势 ========== */
.advantages-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

@media (min-width: 768px) {
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .advantages-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* 合作流程网格 - 6列布局 */
.process-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

@media (min-width: 768px) {
  .process-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}

@media (min-width: 1024px) {
  .process-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.advantage-item {
  display: flex;
  gap: 14px;
  padding: 18px;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.advantage-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.advantage-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.1), rgba(59, 130, 246, 0.1));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--orange);
}

.advantage-content h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.advantage-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== 合作伙伴 ========== */
.partners {
  background: var(--bg-light);
}

.partners-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

@media (min-width: 768px) {
  .partners-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 1024px) {
  .partners-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.partner-item {
  background: var(--bg-white);
  padding: 24px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.partner-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.partner-item span {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 14px;
}

/* ========== 应用场景 ========== */
.scenarios-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .scenarios-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .scenarios-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.scenario-card {
  text-align: center;
  padding: 32px 24px;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

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

.scenario-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.scenario-card p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ========== CTA 区块 ========== */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--stars-pattern);
}

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

.cta-title {
  font-size: 32px;
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .cta-title {
    font-size: 40px;
  }
}

.cta-desc {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 32px;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* ========== 页脚 ========== */
.footer {
  background: #1e293b;
  color: white;
  padding: 50px 0 25px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  margin-bottom: 30px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
}

.footer-logo img {
  height: 40px;
  max-width: auto;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

.footer-section h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-section ul li {
  margin-bottom: 12px;
}

.footer-section ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.footer-section ul li a:hover {
  color: white;
  padding-left: 4px;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 12px;
}

.footer-contact li i {
  margin-top: 4px;
  color: var(--primary-light);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 16px;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-bottom p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-links a:hover {
  color: white;
}

/* ========== 页面头部 ========== */
.page-header {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
  padding: 120px 0 50px;
  text-align: center;
  position: relative;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--stars-pattern);
}

.page-header-content {
  position: relative;
  z-index: 1;
}

.page-title {
  font-size: 36px;
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
}

@media (min-width: 768px) {
  .page-title {
    font-size: 48px;
  }
}

.page-desc {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a:hover {
  color: white;
}

/* ========== 内容区 ========== */
.content-section {
  padding: 80px 0;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
}

@media (min-width: 1024px) {
  .content-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.content-text h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--text-primary);
}

@media (min-width: 768px) {
  .content-text h2 {
    font-size: 36px;
  }
}

.content-text p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.content-list {
  margin: 24px 0;
}

.content-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 15px;
  color: var(--text-secondary);
}

.content-list li::before {
  content: '✓';
  color: var(--secondary-color);
  font-weight: 700;
  flex-shrink: 0;
}

/* ========== 图片展示 ========== */
.content-image {
  background: var(--bg-light);
  border-radius: var(--radius-xl);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.content-image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.responsive-img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.image-placeholder {
  width: 100%;
  height: 300px;
  background: linear-gradient(135deg, rgba(30, 64, 175, 0.1), rgba(59, 130, 246, 0.1));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  font-weight: 600;
}

/* ========== 联系表单 ========== */
.contact-form {
  background: var(--bg-white);
  padding: 40px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 15px;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(30, 64, 175, 0.1);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

/* ========== 返回顶部 ========== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

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

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* ========== 响应式隐藏 ========== */
.hide-mobile {
  display: none;
}

@media (min-width: 768px) {
  .hide-mobile {
    display: block;
  }
}

.hide-desktop {
  display: block;
}

@media (min-width: 768px) {
  .hide-desktop {
    display: none;
  }
}

/* ========== 联系页面 ========== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 14px;
  background: var(--bg-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.contact-item h4 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.contact-item p {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
}

.contact-form h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--text-primary);
}

/* 地图容器样式 */
.contact-map {
  background: var(--bg-white);
  padding: 20px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.contact-map h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-primary);
}

/* ========== 案例页面 ========== */
.cases-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .cases-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.case-card {
  background: var(--bg-white);
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  text-align: center;
  transition: var(--transition);
}

.case-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

.case-card h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.case-card p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* ========== 通用背景类 ========== */
.bg-light {
  background: var(--bg-light);
}

.bg-white {
  background: var(--bg-white);
}

/* ========== PNG图案重复纹理背景类 ========== */
.pattern-bg {
  position: relative;
  background: var(--gradient-primary);
}

.pattern-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('../images/pattern-infinity-small.png');
  background-repeat: repeat;
  background-size: 60px 60px;
  opacity: 0.15;
}

.pattern-bg-bold {
  position: relative;
  background: var(--gradient-primary);
}

.pattern-bg-bold::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('../images/pattern-infinity-bold.png');
  background-repeat: repeat;
  background-size: 80px 80px;
  opacity: 0.2;
}

.pattern-bg-gold {
  position: relative;
  background: var(--gradient-reverse);
}

.pattern-bg-gold::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('../images/pattern-infinity-gold.png');
  background-repeat: repeat;
  background-size: 70px 70px;
  opacity: 0.18;
}

.pattern-bg-dense {
  position: relative;
  background: var(--gradient-primary);
}

.pattern-bg-dense::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('../images/pattern-infinity-small.png');
  background-repeat: repeat;
  background-size: 40px 40px;
  opacity: 0.1;
}

/* ========== 无穷大符号(∞)背景类 (SVG版本) ========== */
.infinity-bg {
  position: relative;
  background: var(--gradient-primary);
}

.infinity-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='120' height='60' viewBox='0 0 120 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M60 10c11 0 15 6 20 10 5 4 8 10 8 18s-3 14-8 18c-5 4-9 10-20 10-11 0-15-6-20-10-5-4-8-10-8-18s3-14 8-18c5-4 9-10 20-10zm0 8c-6 0-8 2-10 4-2 2-4 6-4 12s2 10 4 12c2 2 4 4 10 4 6 0 8-2 10-4 2-2 4-6 4-12s-2-10-4-12c-2-2-4-4-10-4z' fill='white' fill-opacity='0.05' stroke='none'/%3E%3C/svg%3E");
  opacity: 0.7;
}

.infinity-bg-bold {
  position: relative;
  background: var(--gradient-primary);
}

.infinity-bg-bold::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='160' height='80' viewBox='0 0 160 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M80 15c20 0 25 10 35 20 10 10 15 25 15 40s-5 30-15 40c-10 10-15 20-35 20-20 0-25-10-35-20-10-10-15-20-15-40s5-30 15-40c10-10 15-20 35-20zm0 15c-15 0-20 10-30 20-10 10-15 25-15 35s5 25 15 35c10 10 15 20 30 20 15 0 20-10 30-20 10-10 15-20 15-35s-5-25-15-35c-10-10-15-20-30-20z' fill='white' fill-opacity='0.08' stroke='none'/%3E%3C/svg%3E");
}

.infinity-bg-gold {
  position: relative;
  background: var(--gradient-reverse);
}

.infinity-bg-gold::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='120' height='60' viewBox='0 0 120 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M60 10c11 0 15 6 20 10 5 4 8 10 8 18s-3 14-8 18c-5 4-9 10-20 10-11 0-15-6-20-10-10-8-12-18-12-30 0-12 2-22 12-30 5-4 9-10 20-10zm0 8c-6 0-8 2-10 4-2 2-4 6-4 12 0 6 2 10 4 12 2 2 4 4 10 4 6 0 8-2 10-4 2-2 4-6 4-12 0-6-2-10-4-12-2-2-4-4-10-4z' fill='%23FFD700' fill-opacity='0.1' stroke='none'/%3E%3C/svg%3E");
}

/* ========== 流程步骤样式 ========== */
.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 20px 10px;
  transition: var(--transition);
}

.process-step:hover {
  transform: translateY(-4px);
}

.process-step:hover .process-step-icon {
  color: var(--primary-light);
  transform: scale(1.15);
}

.process-step-icon {
  font-size: 36px;
  color: var(--orange);
  margin-bottom: 12px;
  transition: var(--transition);
}

.process-step h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.process-step p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ========== 企业文化卡片 ========== */
.culture-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 40px;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: var(--transition);
}

.culture-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-md);
}

.culture-card .advantage-icon {
  margin: 0 auto 20px;
}

.culture-card h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.culture-card p {
  text-align: center;
  color: var(--text-secondary);
}

/* ========== 移动端优化样式 ========== */
@media (max-width: 767px) {
  /* 导航栏高度减少20%：60px -> 48px */
  .navbar .container {
    height: 48px;
  }
  
  .navbar .logo-img {
    height: 32px;
  }
  
  .mobile-menu {
    top: 48px;
  }
  
  .hero {
    padding-top: 48px;
  }
  
  /* 板块间距紧凑 */
  .section {
    padding: 28px 0;
  }
  
  .section-header {
    margin-bottom: 20px;
  }
  
  /* 项目间距紧凑 */
  .services-grid {
    gap: 16px;
  }
  
  .service-card {
    padding: 24px;
  }
  
  .service-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
  }
  
  .service-card p {
    font-size: 14px;
    margin-bottom: 16px;
  }
  
  .advantages-grid {
    gap: 10px;
  }
  
  .process-grid {
    gap: 10px;
  }
  
  .advantage-item {
    padding: 14px;
    gap: 10px;
  }
  
  .advantage-icon {
    width: 42px;
    height: 42px;
    font-size: 20px;
  }
  
  .advantage-content h4 {
    font-size: 15px;
    margin-bottom: 6px;
  }
  
  .advantage-content p {
    font-size: 13px;
  }
  
  .scenarios-grid {
    gap: 16px;
  }
  
  .scenario-card {
    padding: 24px 18px;
  }
  
  .scenario-icon {
    width: 56px;
    height: 56px;
    font-size: 24px;
    margin-bottom: 16px;
  }
  
  .scenario-card h4 {
    font-size: 15px;
    margin-bottom: 6px;
  }
  
  .scenario-card p {
    font-size: 13px;
  }
  
  .partners-grid {
    gap: 12px;
  }
  
  .partner-item {
    padding: 16px;
  }
  
  /* Hero 区域优化 */
  .hero-title {
    font-size: 28px;
    margin-bottom: 16px;
  }
  
  .hero-subtitle {
    font-size: 15px;
    margin-bottom: 24px;
  }
  
  .hero-buttons {
    gap: 12px;
  }
  
  .btn-lg {
    padding: 12px 24px;
    font-size: 15px;
  }
  
  .hero-stats {
    gap: 16px;
    margin-top: 40px;
    padding-top: 24px;
  }
  
  .stat-number {
    font-size: 26px;
  }
  
  .stat-label {
    font-size: 12px;
  }
  
  /* CTA 区域优化 */
  .cta-section {
    padding: 50px 0;
  }
  
  .cta-title {
    font-size: 24px;
    margin-bottom: 12px;
  }
  
  .cta-desc {
    font-size: 15px;
    margin-bottom: 24px;
  }
  
  .cta-buttons {
    gap: 12px;
  }
  
  /* 页脚优化 */
  .footer {
    padding: 36px 0 20px;
  }
  
  .footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
  }
  
  /* 品牌区占满一行 */
  .footer-brand {
    grid-column: 1 / -1;
  }
  
  /* 联系方式占满一行 */
  .footer-section:last-child {
    grid-column: 1 / -1;
  }
  
  .footer-section h4 {
    margin-bottom: 14px;
    font-size: 15px;
  }
  
  .footer-section ul li {
    margin-bottom: 10px;
  }
  
  .footer-contact li {
    margin-bottom: 10px;
    font-size: 13px;
  }
  
  .footer-bottom {
    padding-top: 20px;
    gap: 12px;
  }
  
  /* 页面头部优化 */
  .page-header {
    padding: 80px 0 36px;
  }
  
  .page-title {
    font-size: 28px;
    margin-bottom: 12px;
  }
  
  .page-desc {
    font-size: 15px;
  }
  
  .breadcrumb {
    margin-top: 16px;
    font-size: 13px;
  }
  
  /* 内容区域优化 */
  .content-grid {
    gap: 36px;
  }
  
  .content-text h2 {
    font-size: 24px;
    margin-bottom: 16px;
  }
  
  .content-text p {
    font-size: 15px;
    margin-bottom: 16px;
  }
  
  .content-list {
    margin: 18px 0;
  }
  
  .content-list li {
    margin-bottom: 12px;
    font-size: 14px;
  }
  
  .content-image {
    padding: 24px;
    min-height: 280px;
  }
  
  .image-placeholder {
    height: 200px;
  }
  
  /* 联系页面优化 */
  .contact-grid {
    gap: 20px;
  }
  
  .contact-info {
    gap: 8px;
  }
  
  .contact-item {
    padding: 10px 12px;
    gap: 10px;
  }
  
  .contact-icon {
    width: 36px;
    height: 36px;
    font-size: 16px;
  }
  
  .contact-item h4 {
    font-size: 12px;
    margin-bottom: 1px;
  }
  
  .contact-item p {
    font-size: 14px;
  }
  
  .contact-form {
    padding: 20px;
  }
  
  .contact-form h3 {
    font-size: 18px;
    margin-bottom: 16px;
  }
  
  .form-group {
    margin-bottom: 14px;
  }
  
  .form-group input,
  .form-group textarea,
  .form-group select {
    padding: 10px 12px;
    font-size: 14px;
  }
  
  /* 案例页面优化 */
  .cases-grid {
    gap: 16px;
  }
  
  .case-card {
    padding: 24px;
  }
  
  .case-icon {
    width: 56px;
    height: 56px;
    font-size: 24px;
    margin-bottom: 16px;
  }
  
  .case-card h4 {
    font-size: 16px;
    margin-bottom: 10px;
  }
  
  .case-card p {
    font-size: 13px;
  }
  
  /* 流程步骤优化 */
  .process-step {
    padding: 16px 8px;
  }
  
  .process-step-icon {
    font-size: 32px;
    margin-bottom: 10px;
  }
  
  .process-step h4 {
    font-size: 13px;
    margin-bottom: 4px;
  }
  
  .process-step p {
    font-size: 12px;
  }
  
  /* 企业文化卡片优化 */
  .culture-card {
    padding: 28px;
  }
  
  .culture-card h4 {
    font-size: 17px;
    margin-bottom: 8px;
  }
  
  .culture-card p {
    font-size: 14px;
  }
  
  /* 返回顶部按钮优化 */
  .back-to-top {
    width: 44px;
    height: 44px;
    font-size: 18px;
    bottom: 20px;
    right: 20px;
  }
}