/* ========================================
   佰异背调 - 主样式文件
   对应目标网站：www.quanren.com
   品牌色：蓝色系 (#1e6fd9, #0d4a9e)
   ======================================== */

/* ========== CSS 变量定义（方便修改品牌信息）========== */
:root {
  /* 品牌颜色 - 可修改此处快速更换主题色 */
  --primary-color: #1e6fd9;        /* 主蓝色 - Logo 和主要按钮 */
  --primary-dark: #0d4a9e;         /* 深蓝色 - 悬停效果 */
  --primary-light: #e8f1fc;        /* 浅蓝色 - 背景点缀 */
  --primary-gradient: linear-gradient(135deg, #1e6fd9 0%, #0d4a9e 100%);
  --accent-color: #ff6b35;         /* 强调色 - 橙色用于 CTA 按钮 */
  --accent-hover: #e55a2b;
  
  /* 中性色 */
  --text-dark: #1a1a1a;            /* 主要文字 */
  --text-gray: #4a5568;            /* 次要文字 */
  --text-light: #718096;           /* 提示文字 */
  --border-color: #e2e8f0;         /* 边框颜色 */
  --bg-light: #f7fafc;             /* 浅色背景 */
  --bg-white: #ffffff;             /* 白色背景 */
  
  /* 字体大小 */
  --font-size-xs: 13px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 42px;
  --font-size-4xl: 56px;
  
  /* 间距 */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-base: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  --spacing-3xl: 96px;
  
  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.12);
  
  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ========== 基础重置 ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--text-dark);
  background-color: var(--bg-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease;
}

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

ul {
  list-style: none;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ========== 顶部导航栏 ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  z-index: 1000;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.header.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  background: rgba(255, 255, 255, 0.99);
}

.top-bar {
  background: var(--primary-gradient);
  color: var(--bg-white);
  padding: var(--spacing-xs) 0;
  font-size: var(--font-size-xs);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.contact-info {
  display: flex;
  gap: var(--spacing-xl);
  align-items: center;
}

.contact-info span {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  opacity: 0.95;
  transition: opacity 0.3s ease;
}

.contact-info span:hover {
  opacity: 1;
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
}

.main-nav {
  padding: var(--spacing-sm) 0;
}

.main-nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  letter-spacing: -0.5px;
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: scale(1.02);
}

.logo-img {
  height: 48px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-link {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--text-dark);
  padding: var(--spacing-xs) var(--spacing-sm);
  position: relative;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  letter-spacing: -0.3px;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 100%;
  height: 3px;
  background: var(--primary-gradient);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
  transform: translateX(-50%) scaleX(1);
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.menu-toggle span {
  width: 25px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ========== 轮播图区域 ========== */
.hero-slider {
  position: relative;
  margin-top: 140px;
  height: 650px;
  overflow: hidden;
  background: var(--primary-light);
}

.slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.slide.active {
  opacity: 1;
}

.slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  filter: brightness(0.75);
  transform: scale(1.1);
  animation: kenburns 20s ease-in-out infinite;
}

@keyframes kenburns {
  0%, 100% {
    transform: scale(1.1) translate(0, 0);
  }
  50% {
    transform: scale(1.15) translate(-10px, -10px);
  }
}

.slide-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--bg-white);
  max-width: 900px;
  padding: var(--spacing-lg);
}

.slide-title {
  font-size: clamp(32px, 5vw, var(--font-size-4xl));
  font-weight: 800;
  margin-bottom: var(--spacing-base);
  letter-spacing: -1px;
  line-height: 1.2;
  animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) both;
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.slide-subtitle {
  font-size: clamp(16px, 3vw, var(--font-size-xl));
  margin-bottom: var(--spacing-lg);
  animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s both;
  opacity: 0.95;
  text-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.slide-btn {
  display: inline-block;
  padding: 18px 40px;
  background: var(--accent-color);
  color: var(--bg-white);
  font-size: var(--font-size-lg);
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  animation: slideUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.4s both;
  box-shadow: 0 4px 20px rgba(255, 107, 53, 0.3);
}

.slide-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(255, 107, 53, 0.4);
}

.slider-controls {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-sm);
  z-index: 3;
}

.slider-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid white;
}

.slider-dot.active {
  background: var(--bg-white);
  width: 36px;
  border-radius: 6px;
  transform: scale(1.1);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== 服务卡片区域 ========== */
.services-section {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(180deg, var(--bg-light) 0%, #ffffff 100%);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-title {
  font-size: clamp(28px, 4vw, var(--font-size-3xl));
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: var(--spacing-base);
  letter-spacing: -1px;
  line-height: 1.2;
}

.section-subtitle {
  font-size: clamp(15px, 2.5vw, var(--font-size-lg));
  color: var(--text-gray);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.service-card {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(30, 111, 217, 0.08);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-gradient);
  transform: scaleX(0);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-12px);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}

.service-icon {
  width: 90px;
  height: 90px;
  margin: 0 auto var(--spacing-base);
  background: linear-gradient(135deg, var(--primary-light), #dbeafe);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(30, 111, 217, 0.1);
}

.service-card:hover .service-icon {
  transform: scale(1.15) rotate(5deg);
  box-shadow: 0 8px 24px rgba(30, 111, 217, 0.2);
}

.service-title {
  font-size: clamp(18px, 2.5vw, var(--font-size-xl));
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.3px;
}

.service-desc {
  font-size: var(--font-size-sm);
  color: var(--text-gray);
  margin-bottom: var(--spacing-base);
  line-height: 1.8;
}

.service-link {
  color: var(--primary-color);
  font-weight: 600;
  font-size: var(--font-size-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-link:hover {
  gap: var(--spacing-base);
  color: var(--primary-dark);
}

/* ========== 为什么选择我们 ========== */
.features-section {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  padding: var(--spacing-xl);
  text-align: center;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--border-color);
}

.feature-card:hover {
  background: linear-gradient(135deg, var(--primary-light) 0%, #dbeafe 100%);
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.feature-icon {
  font-size: 56px;
  margin-bottom: var(--spacing-base);
  filter: grayscale(0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover .feature-icon {
  transform: scale(1.2) rotate(-5deg);
  filter: grayscale(0);
}

.feature-title {
  font-size: clamp(18px, 2.5vw, var(--font-size-xl));
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.3px;
}

.feature-desc {
  font-size: var(--font-size-sm);
  color: var(--text-gray);
  line-height: 1.9;
}

/* ========== 合作客户 ========== */
.partners-section {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-white);
}

.partners-slider-wrapper {
  position: relative;
  overflow: hidden;
  padding: 20px 60px; /* 左右留出箭头空间 */
}

.partners-slider {
  display: flex;
  gap: 30px; /* 调整间距 */
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.partners-slider:hover {
  animation-play-state: paused;
}

.partner-logo {
  flex: 0 0 calc(25% - 22.5px); /* 一次显示 4 个，减去间距 */
  width: calc(25% - 22.5px);
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  border: 1px solid rgba(30, 111, 217, 0.08);
  font-size: 14px;
  color: var(--text-light);
}

.partner-logo:hover {
  background: var(--primary-light);
  border-color: transparent;
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(30, 111, 217, 0.15);
}

.partner-logo img {
  max-width: 80%;
  max-height: 80%;
  object-fit: contain;
  transition: all 0.3s ease;
}

.partner-logo:hover img {
  transition: all 0.3s ease;
}

.slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: white;
  border: 2px solid rgba(30, 111, 217, 0.1);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  transition: all 0.3s ease;
  z-index: 10;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.slider-arrow:hover {
  background: var(--primary-gradient);
  color: white;
  border-color: transparent;
  box-shadow: 0 8px 24px rgba(30, 111, 217, 0.3);
  transform: translateY(-50%) scale(1.1);
}

.slider-arrow-left {
  left: 6px;
}

.slider-arrow-right {
  right: 6px;
}

.partners-dots {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.partners-dots .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(30, 111, 217, 0.2);
  cursor: pointer;
  transition: all 0.3s ease;
}

.partners-dots .dot.active {
  background: var(--primary-color);
  width: 28px;
  border-radius: 5px;
}

.partners-dots .dot:hover {
  background: var(--primary-color);
}

/* ========== 客户评价 ========== */
.testimonials-section {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(180deg, #ffffff 0%, var(--primary-light) 100%);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--spacing-xl);
}

.testimonial-card {
  background: var(--bg-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(30, 111, 217, 0.08);
}

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

.testimonial-content {
  font-size: clamp(15px, 2.5vw, var(--font-size-base));
  color: var(--text-gray);
  line-height: 2;
  margin-bottom: var(--spacing-xl);
  font-style: italic;
  position: relative;
}

.testimonial-content::before {
  content: '"';
  font-size: 60px;
  color: var(--primary-light);
  position: absolute;
  top: -20px;
  left: -10px;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.author-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), #dbeafe);
  box-shadow: 0 4px 12px rgba(30, 111, 217, 0.15);
}

.author-info h4 {
  font-size: var(--font-size-base);
  color: var(--text-dark);
  margin-bottom: 4px;
  font-weight: 600;
}

.author-info p {
  font-size: var(--font-size-xs);
  color: var(--text-light);
}

/* ========== 统计数据 ========== */
.stats-section {
  padding: var(--spacing-3xl) 0;
  background: var(--primary-gradient);
  color: var(--bg-white);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-xl);
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-item h3 {
  font-size: clamp(42px, 6vw, var(--font-size-4xl));
  font-weight: 800;
  margin-bottom: var(--spacing-xs);
  letter-spacing: -2px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.2);
}

.stat-item p {
  font-size: clamp(14px, 2vw, var(--font-size-lg));
  opacity: 0.95;
  font-weight: 500;
}

/* ========== 页脚 ========== */
.footer {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: var(--bg-white);
  padding: 80px 0 40px;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #1e6fd9, #0d4a9e, #1e6fd9);
  background-size: 200% 100%;
  animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.footer-main {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 48px;
  margin-bottom: 48px;
}

.footer-column h3 {
  font-size: 20px;
  font-weight: 700;
  color: white;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
  position: relative;
  padding-bottom: 12px;
}

.footer-column h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, #1e6fd9, transparent);
  border-radius: 2px;
}

.footer-column p {
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: 20px;
  font-size: 14px;
}

.footer-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-column ul li a {
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-block;
}

.footer-column ul li a:hover {
  color: #1e6fd9;
  transform: translateX(5px);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  line-height: 1.6;
}

.footer-contact li a {
  color: rgba(255,255,255,0.7);
  transition: color 0.3s ease;
}

.footer-contact li a:hover {
  color: #1e6fd9;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-bottom p {
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  margin: 0;
}

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

.footer-bottom-links a {
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-bottom-links a:hover {
  color: #1e6fd9;
}

/* ========== 内页通用样式 ========== */
.page-header {
  margin-top: 140px;
  padding: var(--spacing-3xl) 0;
  background: var(--primary-gradient);
  color: var(--bg-white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  bottom: -50%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.page-title {
  font-size: clamp(32px, 5vw, var(--font-size-4xl));
  font-weight: 800;
  margin-bottom: var(--spacing-base);
  letter-spacing: -1px;
  position: relative;
  z-index: 1;
}

.page-subtitle {
  font-size: clamp(16px, 2.5vw, var(--font-size-lg));
  opacity: 0.95;
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.8;
  position: relative;
  z-index: 1;
}

.content-section {
  padding: var(--spacing-2xl) 0;
}

.service-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.detail-card {
  background: var(--bg-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  border-left: 5px solid var(--primary-color);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.detail-card:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-lg);
}

.detail-card h3 {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
  margin-bottom: var(--spacing-base);
}

.detail-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.detail-list li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-base);
  color: var(--text-gray);
}

.detail-list li::before {
  content: '✓';
  color: var(--primary-color);
  font-weight: bold;
}

.card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.card-flag {
  font-size: 32px;
  line-height: 1;
}

.card-header h3 {
  margin: 0;
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(135deg, #1e6fd9 0%, #0d4a9e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.service-tag {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  background: linear-gradient(135deg, #f0f6ff 0%, #e8f1fc 100%);
  color: #1e6fd9;
  font-size: 14px;
  font-weight: 500;
  border-radius: 20px;
  transition: all 0.3s ease;
  border: 1px solid rgba(30, 111, 217, 0.15);
}

.service-tag:hover {
  background: linear-gradient(135deg, #1e6fd9 0%, #0d4a9e 100%);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(30, 111, 217, 0.3);
}

.service-tag.highlight {
  background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
  color: white;
  border-color: transparent;
}

.service-tag.highlight:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
}

.domestic-card {
  background: linear-gradient(135deg, #ffffff 0%, #fafcff 100%);
  border-left: 5px solid #1e6fd9;
  position: relative;
  overflow: hidden;
}

.domestic-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(30, 111, 217, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(30%, -30%);
}

.overseas-card {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-left: 5px solid #10b981;
  position: relative;
  overflow: hidden;
}

.overseas-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(30%, -30%);
}

.overseas-card .card-header h3 {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.overseas-card .service-tag {
  background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
  color: #059669;
  border-color: rgba(16, 185, 129, 0.15);
}

.overseas-card .service-tag:hover {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* ========== 表单样式 ========== */
.form-section {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-light);
}

.contact-form {
  max-width: 640px;
  margin: 0 auto;
  background: var(--bg-white);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: var(--spacing-base);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: var(--spacing-xs);
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  font-size: var(--font-size-base);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  background: var(--bg-white);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 4px rgba(30, 111, 217, 0.08);
  transform: translateY(-2px);
}

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

.submit-btn {
  width: 100%;
  padding: 16px 32px;
  background: var(--primary-gradient);
  color: var(--bg-white);
  font-size: var(--font-size-lg);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 16px rgba(30, 111, 217, 0.2);
}

.submit-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(30, 111, 217, 0.3);
}

/* ========== 工作机会页面 ========== */
.jobs-section {
  padding: var(--spacing-2xl) 0;
}

.job-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.job-card {
  background: var(--bg-white);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--border-color);
}

.job-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateX(8px);
  border-color: transparent;
}

.job-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.job-title {
  font-size: var(--font-size-xl);
  color: var(--primary-color);
  font-weight: 600;
}

.job-location {
  font-size: var(--font-size-sm);
  color: var(--text-light);
  background: var(--bg-light);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
}

.job-desc {
  color: var(--text-gray);
  margin-bottom: var(--spacing-base);
  line-height: 1.8;
}

.job-requirements {
  margin-bottom: var(--spacing-base);
}

.job-requirements h4 {
  font-size: var(--font-size-base);
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
}

.job-requirements ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.job-requirements li {
  font-size: var(--font-size-sm);
  color: var(--text-gray);
  padding-left: var(--spacing-sm);
  position: relative;
}

.job-requirements li::before {
  content: '•';
  color: var(--primary-color);
  position: absolute;
  left: 0;
  font-weight: bold;
}

.apply-btn {
  display: inline-block;
  padding: 12px 28px;
  background: var(--primary-gradient);
  color: var(--bg-white);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 12px rgba(30, 111, 217, 0.2);
}

.apply-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(30, 111, 217, 0.3);
}

/* ========== 响应式设计 ========== */
@media (max-width: 992px) {
  .slide-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-slider {
    height: 500px;
  }
  
  .services-grid,
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }
  
  .partner-logo {
    flex: 0 0 calc(50% - 15px); /* 平板显示 2 个 */
    width: calc(50% - 15px);
  }
  
  .partners-slider-wrapper {
    padding: 20px 50px; /* 平板端调整箭头空间 */
  }
  
  .slider-arrow {
    width: 40px;
    height: 40px;
  }
  
  .slider-arrow-left {
    left: 4px;
  }
  
  .slider-arrow-right {
    right: 4px;
  }
}

@media (max-width: 768px) {
  /* 移动端导航 */
  .menu-toggle {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--spacing-lg) 0;
    gap: 0;
    transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-link {
    padding: var(--spacing-base) var(--spacing-lg);
    border-bottom: 1px solid rgba(30, 111, 217, 0.08);
    font-size: var(--font-size-lg);
  }
  
  .nav-link::after {
    display: none;
  }
  
  /* 隐藏顶部栏联系方式 */
  .top-bar .contact-info {
    display: none;
  }
  
  /* Logo 调整 */
  .logo-img {
    height: 40px;
  }
  
  /* 轮播图调整 */
  .hero-slider {
    margin-top: 80px;
    height: 450px;
  }
  
  .slide-title {
    font-size: clamp(24px, 8vw, var(--font-size-xl));
  }
  
  .slide-subtitle {
    font-size: clamp(14px, 4vw, var(--font-size-base));
  }
  
  .slide-btn {
    padding: 14px 28px;
    font-size: var(--font-size-base);
  }
  
  /* Grid 调整 */
  .services-grid,
  .features-grid,
  .testimonials-grid,
  .stats-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  /* 间距调整 */
  .services-section,
  .features-section,
  .testimonials-section,
  .stats-section {
    padding: var(--spacing-2xl) 0;
  }
  
  /* 页脚调整 */
  .footer {
    padding: 60px 0 30px;
  }
  
  .footer-main {
    gap: 32px;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
  
  .partner-logo {
    flex: 0 0 calc(50% - 15px); /* 移动端显示 2 个 */
    width: calc(50% - 15px);
  }
  
  .partners-slider-wrapper {
    padding: 20px 45px; /* 移动端调整箭头空间 */
  }
  
  .slider-arrow {
    width: 36px;
    height: 36px;
  }
  
  .slider-arrow-left {
    left: 3px;
  }
  
  .slider-arrow-right {
    right: 3px;
  }
}

@media (max-width: 576px) {
  :root {
    --spacing-3xl: 64px;
    --spacing-2xl: 48px;
    --spacing-xl: 32px;
  }
  
  .container {
    padding: 0 var(--spacing-base);
  }
  
  .slide-title {
    font-size: var(--font-size-lg);
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .page-title {
    font-size: var(--font-size-2xl);
  }
  
  .service-card,
  .feature-card,
  .testimonial-card {
    padding: var(--spacing-lg);
  }
  
  .stat-item h3 {
    font-size: var(--font-size-3xl);
  }
  
  .partner-logo {
    flex: 0 0 calc(100% - 0px); /* 小屏手机显示 1 个 */
    width: calc(100% - 0px);
  }
  
  .partners-slider {
    gap: 20px;
  }
  
  .partners-slider-wrapper {
    padding: 20px 40px; /* 小屏手机调整箭头空间 */
  }
  
  .slider-arrow {
    width: 32px;
    height: 32px;
  }
  
  .slider-arrow-left {
    left: 2px;
  }
  
  .slider-arrow-right {
    right: 2px;
  }
}

/* ========== 工具类 ========== */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-base); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-base); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.hidden {
  display: none;
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.animate-fadeInUp {
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.animate-scaleIn {
  animation: scaleIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}