/* ====== 统一配色系统 ====== */
:root {
  /* 主色调 - 专业蓝色系 */
  --primary-blue: #2563eb;           /* 主蓝色 - 专业可信 */
  --primary-blue-dark: #1d4ed8;      /* 深蓝色 - 强调重点 */
  --primary-blue-light: #3b82f6;     /* 浅蓝色 - 次要元素 */
  --primary-blue-lighter: #60a5fa;   /* 更浅蓝 - 背景装饰 */
  
  /* 辅助色 - 科技感配色 */
  --secondary-cyan: #0891b2;         /* 青色 - 科技感 */
  --secondary-teal: #0d9488;         /* 青绿色 - 平衡色 */
  --accent-orange: #ea580c;          /* 橙色 - 行动按钮 */
  
  /* 中性色 - 专业感 */
  --neutral-900: #111827;            /* 深灰 - 主要文字 */
  --neutral-700: #374151;            /* 中灰 - 次要文字 */
  --neutral-500: #6b7280;            /* 浅灰 - 辅助文字 */
  --neutral-200: #e5e7eb;            /* 边框色 */
  --neutral-100: #f3f4f6;            /* 背景色 */
  --neutral-50: #f9fafb;             /* 浅背景 */
  
  /* 语义色 */
  --success: #059669;                /* 成功绿 */
  --warning: #d97706;                /* 警告橙 */
  --error: #dc2626;                  /* 错误红 */
  
  /* 阴影和透明度 */
  --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);
  
  /* 过渡动画 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ====== 基础样式 ====== */
body { 
  background: var(--neutral-50); 
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; 
  padding-top: 0; 
  color: var(--neutral-900);
  line-height: 1.6;
}

/* ====== 导航栏优化 ====== */
#mainNavbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1050;
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
  padding: 0.8rem 0;
  transition: all var(--transition-normal);
  border: none;
  box-shadow: var(--shadow-md);
  border-bottom: 1px solid var(--neutral-200);
}

#mainNavbar.scrolled {
  background: rgba(255, 255, 255, 0.98) !important;
  box-shadow: var(--shadow-lg);
}

#mainNavbar .navbar-brand, 
#mainNavbar .nav-link {
  color: var(--neutral-900) !important;
  font-weight: 500;
  transition: all var(--transition-fast);
}

#mainNavbar .nav-link:hover {
  color: var(--primary-blue) !important;
  color: #e60012 !important;
  transform: translateY(-1px);
}

#mainNavbar .navbar-brand {
  font-weight: 700;
  font-size: 1.4rem;
}

/* 下拉菜单优化 */
@media (min-width: 992px) {
  /* 桌面端：悬停显示下拉菜单 */
  .navbar .dropdown:hover > .dropdown-menu:not(.mega-horizontal) {
    display: block;
    margin-top: 0;
  }
  
  .navbar .dropdown-menu {
    transition: all var(--transition-normal);
}

  /* 桌面端mega菜单默认隐藏，只在悬停或激活时显示 */
  .navbar .dropdown-menu.mega-horizontal {
    display: none !important;
  }
  
  .navbar .dropdown:hover > .dropdown-menu.mega-horizontal,
  .navbar .dropdown.show > .dropdown-menu.mega-horizontal {
    display: flex !important;
    flex-wrap: wrap;
    min-width: 900px;
    max-width: 1200px;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(15px);
    border-radius: 12px;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--neutral-200);
    left: 50% !important;
    transform: translateX(-50%);  
    position: absolute;
    top: 100%;
    margin-top: 0;
    z-index: 2000;
    justify-content: flex-start;
  }
}

/* 移动端：完全依赖Bootstrap行为 */
@media (max-width: 991px) {
  /* 只禁用mega菜单的悬停效果，不影响普通下拉菜单 */
  .navbar .dropdown:hover > .dropdown-menu.mega-horizontal {
    display: none;
  }
  
  /* 为mega-horizontal菜单添加移动端样式 */
  .navbar .dropdown-menu.mega-horizontal {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-radius: 8px;
    padding: 0.5rem 0;
    min-width: 200px;
    position: static;
    border: 1px solid var(--neutral-200);
    box-shadow: var(--shadow-lg);
    /* Bootstrap会自动控制显示/隐藏 */
    display: none;
  }
  
  /* 当dropdown有show类时显示菜单 */
  .navbar .dropdown.show .dropdown-menu.mega-horizontal,
  .navbar .dropdown-menu.mega-horizontal.show {
    display: block !important;
  }
  
  .navbar .dropdown-menu.mega-horizontal .dropdown-item {
    color: var(--neutral-700);
    padding: 0.7rem 1.5rem;
    border-radius: 0;
    font-weight: 500;
  }
  
  .navbar .dropdown-menu.mega-horizontal .dropdown-item:hover {
    background: var(--primary-blue);
    color: #fff;
  }
}

/* 普通下拉菜单样式（如语言选择器） */
.navbar .dropdown-menu:not(.mega-horizontal) {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border: 1px solid var(--neutral-200);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  padding: 0.5rem 0;
  min-width: 150px;
  margin-top: 0.5rem;
}

.navbar .dropdown-menu:not(.mega-horizontal) .dropdown-item {
  font-weight: 500;
  color: var(--neutral-700);
  padding: 0.6rem 1rem;
  transition: all var(--transition-fast);
  border-radius: 0;
  margin: 0;
  font-size: 0.95rem;
}

.navbar .dropdown-menu:not(.mega-horizontal) .dropdown-item:hover,
.navbar .dropdown-menu:not(.mega-horizontal) .dropdown-item:focus {
  background: var(--primary-blue);
  color: white;
  transform: none;
}

.navbar .dropdown-menu:not(.mega-horizontal) .dropdown-item.active {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: white;
}

.navbar .nav-link, .navbar .navbar-brand { 
  color: var(--neutral-900) !important; 
}

/* Mega菜单项样式 */
.navbar .dropdown-menu.mega-horizontal .dropdown-item {
  font-weight: 500; 
  color: var(--neutral-700); 
  padding: 0.7rem 1.5rem; 
  transition: all var(--transition-fast);
  border-radius: 6px;
  margin: 0.2rem 0.5rem;
}

.navbar .dropdown-menu.mega-horizontal .dropdown-item:hover, 
.navbar .dropdown-menu.mega-horizontal .dropdown-item:focus { 
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: white;
  transform: translateX(3px);
}

/* 导航激活状态 */
.navbar .nav-link.active {
  color: var(--primary-blue) !important;
  border-bottom: 2px solid var(--primary-blue);
  font-weight: 700;
  background: transparent;
}

/* ====== 主视觉区现代化 ====== */
.main-visual-bg {
  position: relative;
  height: 70vh;
  min-height: 500px;
  /* 移除背景色，直接显示图片色彩 */
  overflow: hidden;
  margin-top: 76px;
  display: flex;
  align-items: center;
}

.main-visual-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 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='0.1'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  animation: float 20s ease-in-out infinite;
  z-index: 1;
}

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

.main-visual-bg img, .main-visual-bg video {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  object-fit: cover; z-index: 2;
  opacity: 1; /* 显示图片原始色彩 */
}

.main-visual-content {
  position: absolute; left: 0; right: 0; top: 50%;
  transform: translateY(-50%);
  z-index: 3; color: #fff; text-align: center; padding: 0 2rem;
  text-shadow: 0 2px 8px rgba(0,0,0,0.7); /* 增强文字对比度 */
}

.main-visual-content h1 {
  font-size: 3.5rem; 
  font-weight: 800;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.main-visual-content .divider {
  display: inline-block; 
  width: 4rem; 
  height: 4px;
  background: linear-gradient(90deg, var(--accent-orange), var(--secondary-cyan));
  border-radius: 2px; 
  margin: 1.5rem 0;
}

.main-visual-content .subtitle {
  font-size: 1.3rem;
  margin-bottom: 2rem;
  opacity: 0.95;
  font-weight: 400;
}




/* ====== 现代化按钮系统 ====== */
.btn-yoshida {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
  color: #fff;
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: none;
  font-weight: 600;
  padding: 0.75rem 2rem;
  font-size: 1rem;
  position: relative;
  overflow: hidden;
}

.btn-yoshida::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.6s;
}

.btn-yoshida:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  color: #fff;
}

.btn-yoshida:hover::before {
  left: 100%;
}

.btn-yoshida-outline {
  border: 2px solid var(--primary-blue);
  color: var(--primary-blue);
  border-radius: 8px; 
  padding: 0.7rem 2rem; 
  font-weight: 600; 
  background: transparent;
  transition: all var(--transition-normal);
}

.btn-yoshida-outline:hover { 
  background: var(--primary-blue);
  color: #fff;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.btn-yoshida-outline.active,
.btn-yoshida-outline.current {
  background: #2563eb;
  color: #fff;
  border-color: #2563eb;
  box-shadow: 0 2px 8px rgba(37,99,235,0.08);
  font-weight: 600;
}


.btn-action {
  background: linear-gradient(135deg, var(--accent-orange), #f97316);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.75rem 2rem;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.btn-action:hover {
  background: linear-gradient(135deg, #ea580c, #dc2626);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  color: #fff;
}

/* ====== 区块与装饰现代化 ====== */
.skew-section { 
  background: linear-gradient(135deg, #fff, var(--neutral-50));
  transform: skewY(-1deg); 
  margin-top: -2rem; 
  padding: 6rem 0 4rem 0;
  box-shadow: var(--shadow-sm);
}

.skew-section > * { 
  transform: skewY(1deg); 
}

.section-title {
  font-size: 2.5rem; 
  font-weight: 700;
  color: var(--neutral-900);
  margin-bottom: 2rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 3rem;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-blue), var(--secondary-cyan));
  border-radius: 2px;
}

.section-subtitle { 
  color: var(--neutral-700); 
  font-size: 1.125rem; 
  margin-bottom: 3rem; 
  line-height: 1.7;
}

.divider-x { 
  display: none; /* 隐藏重复的装饰线 */
}

.bg-yoshida { 
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark)) !important;
  color: #fff; 
}

.contents-section { 
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-cyan));
  color: #fff; 
  padding: 5rem 0; 
}

.contents-section .section-title { 
  color: #fff; 
  text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

/* ====== 卡片系统现代化 ====== */
.about-img { 
  border-radius: 12px; 
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
}

.about-img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-xl);
}

.card-img-top { 
  object-fit: cover; 
  height: 200px; 
}

.news-img { 
  object-fit: cover; 
  height: 100px; 
}

.project-card { 
  border-radius: 12px; 
  overflow: hidden; 
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  background: white;
  border: 1px solid var(--neutral-200);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

/* 产品卡片悬停效果 */
.project-card:hover .card-body {
  background: white !important;
  color: var(--neutral-900) !important;
  transition: all var(--transition-normal);
}

.project-card:hover .card-title {
  color: var(--primary-blue) !important;
}

.project-card:hover .card-text {
  color: var(--neutral-700) !important;
}

.skew-bg {
  position: relative;
  background: #f6fafd;
  overflow: hidden;
}
.skew-bg::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0; height: 100%;
  background: url('data:image/svg+xml;utf8,<svg width="100%" height="100" viewBox="0 0 1440 100" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M0,0 C480,100 960,0 1440,100 L1440,0 L0,0 Z" fill="%23e3eefe"/></svg>') repeat-x;
  background-size: cover;
  z-index: 0;
  opacity: 0.3;
}
.skew-bg > * {
  position: relative;
  z-index: 1;
}
.skew-bg1 {
  position: relative;
  background: linear-gradient(135deg, #f6fafd, #e3eefe);
  overflow: hidden;
}
.skew-bg1::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0; height: 100%;
  background: url('data:image/svg+xml;utf8,<svg width="100%" height="100" viewBox="0 0 1440 100" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M0,100 C480,0 960,100 1440,0 L1440,100 L0,100 Z" fill="%23ffffff"/></svg>') repeat-x;
  background-size: cover;
  z-index: 0;
  opacity: 0.5;
}
.skew-bg1 > * {
  position: relative;
  z-index: 1;
}


.news-badge { 
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-cyan));
  color: #fff; 
  border-radius: 6px; 
  font-size: 0.875rem; 
  padding: 0.4rem 1rem;
  box-shadow: var(--shadow-sm);
  font-weight: 500;
}

.carousel-control-prev-icon, .carousel-control-next-icon { 
  background: linear-gradient(135deg, var(--primary-blue), var(--secondary-cyan));
  border-radius: 50%;
  box-shadow: var(--shadow-md);
}

/* ====== 页脚现代化 ====== */
.footer-bg { 
  background: linear-gradient(135deg, var(--neutral-900), #1f2937);
  color: #fff; 
}

.footer-bg a { 
  color: var(--primary-blue-lighter);
  transition: all var(--transition-fast);
}

.footer-bg a:hover { 
  color: #fff;
  text-decoration: none;
  transform: translateX(2px);
}

.footer-logo { 
  opacity: 0.9; 
}

.footer-link a { 
  color: var(--neutral-500); 
  text-decoration: none;
  transition: all var(--transition-fast);
}

.footer-link a:hover { 
  color: var(--primary-blue-lighter);
  transform: translateX(3px);
}

/* ====== 交互优化 ====== */
.main-visual-carousel {
  position: relative;
  width: 100%;
  height: 70vh;
  min-height: 500px;
  overflow: hidden;
}

.main-visual-item {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  opacity: 0;
  transition: opacity 0.8s ease;
  z-index: 1;
}

.main-visual-item.active {
  opacity: 1;
  z-index: 2;
}

.main-visual-prev, .main-visual-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary-blue);
  border: none;
  font-size: 1.5rem;
  padding: 1rem;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.main-visual-prev:hover, .main-visual-next:hover {
  background: var(--primary-blue);
  color: white;
  transform: translateY(-50%) scale(1.1);
  box-shadow: var(--shadow-lg);
}

.main-visual-prev { left: 2rem; }
.main-visual-next { right: 2rem; }

/* ====== 响应式优化 ====== */
@media (max-width: 768px) {
  .main-visual-content { 
    padding: 0 1rem; 
  }
  
  .main-visual-content h1 { 
    font-size: 2.5rem; 
  }
  
  .section-title { 
    font-size: 2rem; 
  }
  
  .main-visual-prev, .main-visual-next {
    width: 2.5rem;
    height: 2.5rem;
    font-size: 1.2rem;
  }
  
  .main-visual-prev { left: 1rem; }
  .main-visual-next { right: 1rem; }
}

.about-section {
  max-width: 1200px;
  margin: 0 auto;
}
 
.about-img {
  border-radius: 1.5rem;
  box-shadow: 0 4px 32px rgba(0,0,0,0.08);
}
@media (max-width: 991px) {
  .about-section .row { flex-direction: column-reverse; }
  .about-img { margin-bottom: 2rem; }
}

.technology-section {
  max-width: 1200px;
  margin: 0 auto;
}
.section-title {
  font-size: 2.4rem;
  font-weight: 700;
  color: #3b82f6 ;
}
.section-subtitle {
  color: #666;
  font-size: 1.1rem;
}
.tech-card {
  background: #fff;
  border-radius: 1rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: box-shadow 0.2s;
}
.tech-card:hover {
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}
.big-card {
  background: #f8f9fa;
  border-radius: 1.5rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  text-align: center;
}
@media (max-width: 991px) {
  .technology-section .row { flex-direction: column; }
}
:root { --transition-time: 0.4s; }

h3.h4 {
  color: var(--neutral-900);
  border-left: 4px solid var(--primary-blue);
  padding-left: 12px;
  margin-bottom: 1.2rem;
  font-weight: 600;
}

.row.g-4.align-items-center {
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--neutral-200);
  transition: all var(--transition-normal);
}

.row.g-4.align-items-center:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.product-row {
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  align-items: center;
  border: 1px solid var(--neutral-200);
  transition: all var(--transition-normal);
}

.product-row:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.product-row img {
  max-width: 300px;
  max-height: 150px;
  object-fit: contain;
  border-radius: 8px;
}

.product-row .fw-bold.fs-5 {
  color: var(--neutral-900);
  margin-bottom: 0.5rem;
}

.btn-outline-danger.rounded-pill {
  font-weight: 600;
  font-size: 1rem;
  border-radius: 25px;
  border: 2px solid var(--accent-orange);
  color: var(--accent-orange);
  transition: all var(--transition-normal);
  padding: 0.5rem 1.5rem;
}

.btn-outline-danger.rounded-pill:hover {
  background: var(--accent-orange);
  color: white;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ====== 行业侧边导航现代化 ====== */
.industries-side-nav {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 1.5rem 0.5rem;
  margin-bottom: 2rem;
  border: 1px solid var(--neutral-200);
}

.industries-side-nav .nav-link {
  color: var(--neutral-700);
  font-weight: 500;
  border-radius: 8px;
  margin-bottom: 0.4rem;
  padding: 0.8rem 1.2rem;
  transition: all var(--transition-normal);
  position: relative;
}

.industries-side-nav .nav-link.active {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: white;
  font-weight: 600;
  box-shadow: var(--shadow-md);
}

.industries-side-nav .nav-link:hover:not(.active) {
  background: linear-gradient(135deg, var(--neutral-100), var(--neutral-50));
  color: var(--primary-blue);
  transform: translateX(5px);
}

@media (max-width: 991px) {
  .industries-side-nav {
    border-radius: 8px;
    padding: 1rem 0.3rem;
  }
  .industries-side-nav .nav-link {
    padding: 0.6rem 1rem;
    font-size: 0.95rem;
  }
}

/* ====== 卡片组件现代化 ====== */
.mission-card {
  border: none; 
  border-radius: 16px; 
  box-shadow: var(--shadow-md);
  background: #fff;
  transition: all var(--transition-normal);
  border: 1px solid var(--neutral-200);
  overflow: hidden;
}

.mission-card:hover { 
  box-shadow: var(--shadow-xl); 
  transform: translateY(-8px) scale(1.02);
}

.product-card {
  border: none; 
  border-radius: 16px; 
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: 1px solid var(--neutral-200);
  overflow: hidden;
  background: white;
}

.product-card:hover { 
  box-shadow: var(--shadow-xl); 
  transform: translateY(-8px) scale(1.02);
}

.product-card .card-body {
  padding: 1.5rem;
}

.product-card .card-title {
  color: var(--neutral-900);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.product-card .card-text {
  color: var(--neutral-700);
  line-height: 1.6;
}

.product-card:hover .card-body {
  background: white !important;
  color: var(--neutral-900) !important;
  transition: all var(--transition-normal);
}

.product-card:hover .card-title {
  color: var(--primary-blue) !important;
}

.product-card:hover .card-text {
  color: var(--neutral-700) !important;
}

/* ====== 技术相关样式 ====== */
.technology-section {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--neutral-900);
  margin-bottom: 1rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 3rem;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-blue), var(--secondary-cyan));
  border-radius: 2px;
}

.section-subtitle {
  color: var(--neutral-700); 
  font-size: 1.125rem;
  line-height: 1.7;
}

.tech-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: 1px solid var(--neutral-200);
  padding: 1.5rem;
}

.tech-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.big-card {
  background: linear-gradient(135deg, var(--neutral-50), #e0f7fa);
  border-radius: 16px;
  box-shadow: var(--shadow-md);
  text-align: center;
  border: 1px solid var(--neutral-200);
  padding: 2rem;
  transition: all var(--transition-normal);
}

.big-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

@media (max-width: 991px) {
  .technology-section .row { 
    flex-direction: column; 
  }
  
  .about-section .row { 
    flex-direction: column-reverse; 
  }
  
  .about-img { 
    margin-bottom: 2rem; 
  }
}

/* ====== 特殊效果和装饰 ====== */
.recruit-img { 
  object-fit: cover; 
  height: 80px; 
  border-radius: 8px; 
  transition: all var(--transition-normal);
}

.recruit-img:hover {
  transform: scale(1.05);
}

/* 文本选择样式 */
::selection {
  background: rgba(37, 99, 235, 0.3);
  color: var(--neutral-900);
}

::-moz-selection {
  background: rgba(37, 99, 235, 0.3);
  color: var(--neutral-900);
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--neutral-100);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-blue-light);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-blue);
}

/* ====== 加载和过渡动画 ====== */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-slide-up {
  animation: slideInUp 0.6s ease forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.animate-fade-in {
  animation: fadeIn 0.8s ease forwards;
}

/* ====== 辅助类 ====== */
.text-primary-custom {
  color: var(--primary-blue) !important;
}

.bg-primary-custom {
  background: var(--primary-blue) !important;
}

.border-primary-custom {
  border-color: var(--primary-blue) !important;
}

.shadow-custom {
  box-shadow: var(--shadow-md) !important;
}

.shadow-custom-lg {
  box-shadow: var(--shadow-lg) !important;
}

.rounded-custom {
  border-radius: 12px !important;
}

.transition-custom {
  transition: all var(--transition-normal) !important;
}

/* 行业卡片简洁设计 */
.industry-card {
  border: none;
  border-radius: 12px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  overflow: hidden;
  background: white;
  height: 100%;
}

.industry-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  text-decoration: none !important;
}

.industry-card:hover .card-body {
  background: white !important;
  color: var(--neutral-900) !important;
}

.industry-card:hover .card-text {
  color: var(--neutral-700) !important;
}

.industry-card:hover .card-title {
  color: var(--primary-blue) !important;
}

/* 确保链接包装的卡片样式正确 */
a .industry-card .card-title {
  color: var(--neutral-900);
  text-decoration: none;
}

a .industry-card .card-text {
  color: var(--neutral-600);
  text-decoration: none;
}

a:hover .industry-card .card-title {
  color: var(--primary-blue) !important;
  text-decoration: none;
}

a:hover .industry-card .card-text {
  color: var(--neutral-700) !important;
  text-decoration: none;
}

/* 移除链接的默认颜色和下划线 */
a.text-decoration-none:hover {
  text-decoration: none !important;
}

/* 卡片容器简化 */
.row.row-cols-1.row-cols-sm-2.row-cols-lg-4.g-4 {
  margin-bottom: 3rem;
}

/* 卡片图片简化 */
.industry-card .card-img-top {
  height: 200px;
  object-fit: cover;
  border-radius: 0;
}

/* 卡片内容简化 */
.industry-card .card-body {
  padding: 1.5rem;
  background: white;
}

.industry-card .card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--neutral-900);
  margin-bottom: 0.75rem;
  text-align: left;
}

.industry-card .card-text {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--neutral-600);
  margin-bottom: 0;
}

/* 页面标题简化 */
.section-title.mb-4 {
  text-align: left;
  margin-bottom: 2rem !important;
  font-size: 2.2rem;
}

.section-title.mb-4::after {
  left: 0;
  transform: none;
  width: 3rem;
}

/* 描述文字简化 */
.mb-4 .mb-3 {
  text-align: left;
  font-size: 1rem;
  line-height: 1.6;
  max-width: none;
  margin-bottom: 2rem !important;
  color: var(--neutral-600);
}

/* 容器间距简化 */
.container.py-5 {
  padding-top: 3rem !important;
  padding-bottom: 3rem !important;
}

/* 响应式简化 */
@media (max-width: 576px) {
  .industry-card .card-img-top {
    height: 160px;
  }
  
  .industry-card .card-body {
    padding: 1.25rem;
  }
  
  .section-title.mb-4 {
    font-size: 1.8rem;
  }
}

@media (min-width: 768px) and (max-width: 991px) {
  .row.row-cols-1.row-cols-sm-2.row-cols-lg-4.g-4 {
    margin-bottom: 2.5rem;
  }
}

@media (min-width: 992px) {
  .row.row-cols-1.row-cols-sm-2.row-cols-lg-4.g-4 {
    margin-bottom: 3rem;
  }
}

/* 移动端导航优化 */
@media (max-width: 991.98px) {
  .nav-link-wrapper {
    width: 100%;
    padding: 0;
    margin: 0;
    display: flex;
    align-items: center;
  }
  
  .nav-link-main {
    flex: 1;
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: inherit;
    display: block;
  }
  
  .nav-link-main:hover,
  .nav-link-main:focus {
    color: inherit;
    text-decoration: none;
  }
  
  .dropdown-toggle-icon {
    padding: 0.5rem;
    color: inherit;
    text-decoration: none;
    border-radius: 0.25rem;
    transition: background-color 0.15s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 2rem;
  }
  
  .dropdown-toggle-icon:hover {
    background-color: rgba(0,0,0,0.1);
    color: inherit;
    text-decoration: none;
  }
  
  .dropdown-toggle-icon::after {
    display: none;
  }
  
  .dropdown-toggle-icon i {
    font-size: 0.875rem;
    transition: transform 0.15s ease-in-out;
  }
  
  .dropdown-toggle-icon[aria-expanded="true"] i {
    transform: rotate(180deg);
  }
  
  /* 移动端隐藏桌面端的下拉菜单 */
  .dropdown-toggle.d-none.d-lg-block {
    display: none !important;
  }
  
  /* 确保有二级菜单的项目与普通nav-link对齐 */
  .nav-item .nav-link-wrapper {
    min-height: auto;
  }
  
  /* 普通nav-link保持原有样式 */
  .nav-item .nav-link:not(.nav-link-main):not(.dropdown-toggle-icon) {
    padding: 0.5rem 1rem;
  }
}

/* 桌面端导航优化 */
@media (min-width: 992px) {
  /* 桌面端隐藏移动端的导航元素 */
  .nav-link-main {
    display: none;
  }
  
  .dropdown-toggle-icon {
    display: none !important;
  }
  
  /* 桌面端显示原有的下拉菜单 */
  .dropdown-toggle.d-none.d-lg-block {
    display: block !important;
  }
}

/* 搜索模态框样式 */
#searchModal .modal-content {
  border-radius: 12px;
  border: none;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

#searchModal .modal-header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border-radius: 12px 12px 0 0;
}

#searchModal .modal-title {
  font-weight: 600;
}

#searchModal .btn-close {
  filter: invert(1);
}

#searchModal .search-tag {
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid #e0e0e0;
}

#searchModal .search-tag:hover {
  background-color: var(--primary-color) !important;
  color: white !important;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(var(--primary-rgb), 0.3);
}

#searchModal .btn-outline-secondary {
  border-color: #e0e0e0;
  color: #666;
  transition: all 0.3s ease;
}

#searchModal .btn-outline-secondary:hover {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
  transform: translateY(-1px);
}

#searchModal .form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(var(--primary-rgb), 0.25);
}

/* 搜索按钮在导航栏的样式 */
.navbar .nav-link[title="搜索"] {
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.navbar .nav-link[title="搜索"]:hover {
  background-color: rgba(var(--primary-rgb), 0.1);
  transform: scale(1.1);
}

/* ====== 移动端导航切换图标动画 ====== */
.navbar-toggler {
  border: none;
  padding: 0.25rem 0.5rem;
  transition: all var(--transition-normal);
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* 保持Bootstrap默认的汉堡菜单图标 */
.navbar-toggler-icon {
  transition: all var(--transition-normal);
}

/* 展开状态时的动画效果 */
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon {
  transform: rotate(90deg);
}

/* 悬停效果 */
.navbar-toggler:hover {
  background-color: rgba(37, 99, 235, 0.1);
}

@media (max-width: 767.98px) {
  .info-content img {
    width: 100% !important;
    max-width: 100% !important;
    height: auto !important;
    display: block !important;
    margin-left: auto !important;
    margin-right: auto !important;
  }
}




/*
分页格式
*/

.pagelist {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-left: 0;
  margin-top: 50px;
  margin-bottom: 35px;
  list-style: none;
}

.pagelist li {
  display: inline-block;
  margin: 0 3px;
}

.pagelist ul li a {
  padding: 9px 15px;
  font-size: 14px;
  display: block;
  background: #2563eb;
  color: #fff;
}

.pagelist ul li span {
  padding: 9px 15px;
  font-size: 14px;
  display: block;
  color:  #2563eb;
}

.pagelist ul li.active a {
  background: none;
  color:  #2563eb;
  border: 1px solid #e5e5e5;
}

.pagelist ul li.active span {
  background: none;
  color:  #2563eb;
  border: 1px solid #e5e5e5;
}

.pagelist ul li.disabled span {
  background: none;
  color:  #2563eb;
  border: 1px solid #e5e5e5;
}

.pagelist ul li.pageprev a,
.pagelist ul li.pagenext a {
  background: none;
  color:  #2563eb;
  border: 1px solid #e5e5e5;
}

.pagelist ul li:hover {
  transform: scale(0.95);
}