/* ====================== 1. Global Base Styles (Core: Common to all pages) ====================== */
/* Global content protection (simplified version) - Disable selection, copy, drag, allow copy for company name/email */
body {
  -webkit-touch-callout: none; /* 禁止iOS长摁弹出菜单 */
  -webkit-user-select: none;   /* 禁止iOS选择文本 */
  -khtml-user-select: none;    /* 禁止Konqueror浏览器选择文本 */
  -moz-user-select: none;      /* 禁止Firefox选择文本 */
  -ms-user-select: none;       /* 禁止IE/Edge选择文本 */
  user-select: none;           /* 标准禁止文本选择 */
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  /* Content protection */
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
  user-drag: none;
  cursor: default;
  /* Global unified font: Prioritize system sans-serif fonts for cross-device consistency */
  font-family: -apple-system, BlinkMacSystemFont, "Arial", sans-serif;
  /* Prevent default style interference when text is selected */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Allow selection/copy for company name and email */
.company-name, .company-email {
  -webkit-user-select: auto;
  -moz-user-select: auto;
  -ms-user-select: auto;
  user-select: auto;
  cursor: text;
}

/* Enhanced image protection - Disable click, drag, long press to save */
img {
  pointer-events: none;
  -webkit-touch-callout: none;
  max-width: 100%; /* Image responsive to prevent overflow */
  height: auto; /* Maintain image ratio */
  border: none; /* Remove default border */
}

/* Preserve form input functionality */
input, textarea, select {
  -webkit-user-select: auto;
  -moz-user-select: auto;
  -ms-user-select: auto;
  user-select: auto;
  cursor: text;
}

/* HTML/Body: Global page styles */
html {
  font-size: 16px; /* Global base font size for rem adaptation */
  scroll-behavior: smooth; /* Smooth scrolling (experience optimization) */
  /* IE compatibility */
  scroll-behavior: auto\9;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.7; /* Global line height (improve readability) */
  color: #333;
  background-color: #f7f8fa; /* Global background color */
  min-height: 100vh; /* Ensure page fills screen height at minimum */
}

/* Universal tag reset: Eliminate browser default style differences */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600; /* Unified bold for global headings */
  color: #222; /* Heading primary color */
  margin-bottom: 0.5rem; /* Unified bottom margin for headings */
  line-height: 1.2;
}

p {
  font-size: 15px;
  color: #333;
  line-height: 1.6;
  margin-bottom: 12px;
}

a {
  color: #005bb5; /* Global link color */
  text-decoration: none; /* Remove default underline */
  transition: color 0.3s ease; /* Link hover transition (experience optimization) */
}

a:hover {
  color: #ff6c00; /* Link hover color (unified with button color) */
  text-decoration: underline;
}

ul, ol {
  margin-left: 22px;
  margin-bottom: 12px;
}

li {
  font-size: 15px;
  color: #333;
  line-height: 1.5;
  margin-bottom: 6px;
}

button {
  cursor: pointer; /* Default pointer for buttons */
  border: none; /* Remove default border */
  transition: background-color 0.3s ease; /* Button hover transition */
}

/* Global utility classes: Reusable across all pages */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.clearfix::after {
  content: '';
  display: table;
  clear: both;
}

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

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

/* Product sidebar styles (merged redundant code) */
.product-sidebar {
  width: 100%; /* 调整为全屏宽度，适配多列列表 */
  float: none; /* 取消浮动，避免布局错乱 */
  margin-right: 0;
  margin-bottom: 20px;
  background: #f8f9fa;
  border-radius: 6px;
  padding: 15px;
  box-sizing: border-box;
}

.product-sidebar h3 {
  font-size: 18px;
  color: #222;
  margin: 0 0 15px 0;
  padding-bottom: 10px;
  border-bottom: 2px solid #007bff;
  text-align: center; /* 标题居中 */
}

/* 核心修改：Our Products 列表一行5个显示 */
.product-sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(7, 1fr); /* 一行5列，匹配需求 */
  gap: 3px; /* 列间距 */
  /* 移除容器背景，只给文字区域加背景 */
  padding: 3px; /* 可选：容器内边距，避免内容贴边 */
}

/* 核心：只为列表项的文字区域添加蓝色背景 */
.product-sidebar ul li {
  background-color: #B9DCFF; /* 纯蓝色背景，可自定义 */
  color: white; /* 白色文字，保证可读性 */
  text-align: center; /* 文字居中 */
  padding: 5px 5px; /* 上下8px、左右5px内边距，让背景包裹文字 */
  border-radius: 4px; /* 可选：圆角，视觉更柔和 */
  /* 如需自定义蓝色，替换上面的background-color即可：
  background-color: #0066cc; /* 企业蓝 */
  /* background-color: rgba(0, 102, 204, 0.9); /* 半透明蓝 */
}

.product-sidebar li {
  margin-bottom: 0; /* 取消默认底部间距 */
  padding: 0;
}

.product-sidebar a {
  color: #333;
  text-decoration: none;
  display: block;
  padding: 8px 6px; /* 缩小内边距，适配多列 */
  border-radius: 4px;
  transition: background 0.3s ease;
  font-size: 12px; /* 微调字体大小，避免换行 */
  text-align: center; /* 文字居中 */
  white-space: nowrap; /* 禁止文字换行 */
  overflow: hidden; /* 超出隐藏 */
  text-overflow: ellipsis; /* 超出显示省略号 */
}

.product-sidebar a:hover {
  background: #007bff;
  color: #fff;
  text-decoration: none;
}

/* Main content container */
.main-content {
  overflow: hidden; /* Clear float */
  padding: 0 10px;
}

/* Language switch link styles */
.lang-switch {
  float: right;
  margin-top: 10px;
  margin-right: 10px;
}

.lang-switch a {
  color: #007bff;
  text-decoration: none;
  font-size: 14px;
  padding: 5px 10px;
  border: 1px solid #007bff;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.lang-switch a:hover {
  background: #007bff;
  color: #fff;
  text-decoration: none;
}

/* 核心修改：Product entrance 产品展示一行4个显示 */
.product-entrance {
  display: -webkit-grid; /* Safari */
  display: grid;
  -webkit-grid-template-columns: repeat(4, 1fr); /* Safari - 强制4列 */
  grid-template-columns: repeat(4, 1fr); /* 核心：一行4个 */
  -webkit-gap: 20px; /* Safari 11- */
  gap: 20px;
  margin: 30px 0 28px 0;
}

.entrance-card {
  display: -webkit-box; /* Older iOS/Android */
  display: -ms-flexbox; /* IE 10-11 */
  display: flex;
  -webkit-box-orient: vertical; /* Older webkit */
  -webkit-box-direction: normal;
  -ms-flex-direction: column; /* IE 10-11 */
  flex-direction: column;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  overflow: hidden;
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.entrance-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}

.entrance-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-bottom: 1px solid #eee;
  /* Fallback: Background image for browsers not supporting object-fit */
  background-size: cover;
  background-position: center;
}

.entrance-text {
  padding: 15px;
  text-align: center;
}

.entrance-text h3 {
  font-size: 16px;
  color: #222;
  margin-bottom: 8px;
}

.entrance-text p {
  font-size: 14px;
  color: #666;
  margin-bottom: 0;
}

/* Content section universal styles (optimized Grid compatibility) */
.grid-2 {
  display: -webkit-grid; /* Safari */
  display: grid;
  -webkit-grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); /* Safari */
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  -webkit-gap: 20px; /* Safari 11- */
  gap: 20px;
  margin: 30px 0;
}

.card {
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: box-shadow 0.3s ease;
}

.card:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.card-green {
  background: #f8fff8;
  border: 1px solid #e6f7e6;
}

.card .title {
  font-size: 18px;
  font-weight: bold;
  color: #222;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid #eee;
}

.card img.img-left {
  float: left;
  width: 120px;
  height: auto;
  margin-right: 15px;
  margin-bottom: 10px;
  border-radius: 4px;
}

.card p {
  margin-bottom: 10px;
  font-size: 14px;
}

/* Highlight section styles */
.highlight {
  background: #f0f8ff;
  padding: 30px;
  border-radius: 6px;
  margin: 20px 0 28px 0;
  border-left: 4px solid #005bb5;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.highlight strong {
  color: #005bb5;
}

/* ====================== 2. Global Component Styles (Header/Navigation/Banner/Footer etc.) ====================== */
/* Header styles */
.header {
  display: -webkit-box; /* Older iOS/Android */
  display: -ms-flexbox; /* IE 10-11 */
  display: flex;
  -webkit-box-align: center; /* Older webkit */
  -ms-flex-align: center; /* IE 10-11 */
  align-items: center;
  -webkit-box-pack: justify; /* Older webkit */
  -ms-flex-pack: justify; /* IE 10-11 */
  justify-content: space-between;
  -ms-flex-wrap: wrap; /* IE 10-11 */
  flex-wrap: wrap;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid #e0e0e0;
}

.logo img {
  width: 140px;
  height: auto;
  object-fit: contain;
}

.header-info {
  -webkit-box-flex: 1; /* Older webkit */
  -ms-flex: 1; /* IE 10-11 */
  flex: 1;
  min-width: 300px;
}

.header-info h1 {
  font-size: 32px;
  color: #222;
  margin-bottom: 15px;
}

.header-info h2 {
  font-size: 14px;
  color: #005bb5;
  margin-bottom: 4px;
}

.header-info p {
  font-size: 13px;
  color: #555;
  line-height: 1.5;
}

/* Navigation bar styles */
.navbar {
  background-color: #005bb5;
  border-radius: 6px;
  margin: 16px 0;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nav {
  display: -webkit-box; /* Older iOS/Android */
  display: -ms-flexbox; /* IE 10-11 */
  display: flex;
  -webkit-box-pack: center; /* Older webkit */
  -ms-flex-pack: center; /* IE 10-11 */
  justify-content: center;
  -ms-flex-wrap: wrap; /* IE 10-11 */
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav li {
  padding: 12px 16px;
  transition: background-color 0.3s ease;
  margin: 0;
}

.nav li:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.nav li a {
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  display: block;
}

.nav li a:hover {
  color: #ffcc00;
  text-decoration: underline;
}

/* Banner styles */
.main-banner {
  width: 100%;
  height: 500px;
  margin-bottom: 24px;
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.main-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
}

.banner-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: #fff;
  background-color: rgba(0, 0, 0, 0.45);
  padding: 35px 45px;
  border-radius: 10px;
  max-width: 800px;
}

.banner-text h2 {
  font-size: 30px;
  margin-bottom: 15px;
  color: #ffffff;
}

.banner-text p {
  font-size: 16px;
  margin-bottom: 22px;
  color: #ffffff;
  font-weight: 500;
}

.banner-btn {
  display: inline-block;
  padding: 12px 28px;
  background-color: #ff6c00;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-weight: 500;
  font-size: 15px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  transition: background-color 0.3s ease, transform 0.3s ease;
}

.banner-btn:hover {
  background-color: #e56000;
  color: #fff;
  text-decoration: none;
  transform: translateY(-2px);
}

/* Trust endorsement styles */
.trust-section {
  background-color: #fff;
  padding: 24px;
  border-radius: 8px;
  margin-bottom: 32px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.trust-container {
  display: -webkit-box; /* Older iOS/Android */
  display: -ms-flexbox; /* IE 10-11 */
  display: flex;
  -webkit-box-pack: justify; /* Older webkit */
  -ms-flex-pack: justify; /* IE 10-11 */
  justify-content: space-between;
  -webkit-box-align: center; /* Older webkit */
  -ms-flex-align: center; /* IE 10-11 */
  align-items: center;
  -ms-flex-wrap: wrap; /* IE 10-11 */
  flex-wrap: wrap;
  gap: 20px;
  padding: 10px 0 30px;
  justify-content: center;
}

.trust-item {
  -webkit-box-flex: 1; /* Older webkit */
  -ms-flex: 1; /* IE 10-11 */
  flex: 1;
  min-width: 150px;
  text-align: center;
  padding: 15px;
  background: #f9f9f9;
  border-radius: 6px;
  transition: background 0.3s ease;
}

.trust-item:hover {
  background: #f0f8fb;
}

.trust-item img {
  height: 60px;
  object-fit: contain;
  margin-bottom: 8px;
  width: 80px;
  margin: 0 auto 10px;
}

.trust-item p {
  font-size: 13px;
  color: #666;
  margin-bottom: 0;
  font-size: 14px;
  color: #333;
  line-height: 1.4;
}

/* Content section universal styles */
.section {
  margin-bottom: 32px;
  padding: 10px 0;
}

.section-title {
  font-size: 18px;
  margin-bottom: 18px;
  padding-bottom: 8px;
  border-bottom: 2px solid #e0e0e0;
  text-align: center;
}

/* Footer styles */
.footer {
  background-color: #ff6c00;
  padding: 36px 0;
  margin-top: 40px;
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  background-color: #fff;
  padding: 26px;
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  max-width: 1200px;
  padding: 0 15px;
}

.footer-contact {
  display: -webkit-box; /* Older iOS/Android */
  display: -ms-flexbox; /* IE 10-11 */
  display: flex;
  -webkit-box-pack: center; /* Older webkit */
  -ms-flex-pack: center; /* IE 10-11 */
  justify-content: center;
  -ms-flex-wrap: wrap; /* IE 10-11 */
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 12px;
}

.footer-contact p {
  font-size: 14px;
  color: #444;
  margin-bottom: 0;
}

.footer-inner p {
  font-size: 13px;
  color: #666;
  margin-bottom: 6px;
  font-size: 14px;
  color: #666;
  margin-bottom: 8px;
}

.footer a {
  color: #007bff;
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* WhatsApp floating button */
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  background: #25d366;
  border-radius: 50%;
  display: -webkit-box; /* Older webkit */
  display: -ms-flexbox; /* IE 10-11 */
  display: flex;
  -webkit-box-align: center; /* Older webkit */
  -ms-flex-align: center; /* IE 10-11 */
  align-items: center;
  -webkit-box-pack: center; /* Older webkit */
  -ms-flex-pack: center; /* IE 10-11 */
  justify-content: center;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
  z-index: 999;
  bottom: 30px;
  right: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: all 0.3s ease;
}

.whatsapp-float:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
}

.whatsapp-float img {
  width: 30px;
  height: 30px;
  width: 32px;
  height: 32px;
}

/* Floating quote form */
.quote-form-float {
  position: fixed;
  bottom: 90px;
  right: 20px;
  width: 300px;
  background: #fff;
  border-radius: 8px;
  padding: 15px;
  box-shadow: 0 2px 15px rgba(0,0,0,0.15);
  z-index: 998;
  right: 30px;
  top: 50%;
  transform: translateY(-50%);
  padding: 20px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.quote-form-float h4 {
  font-size: 16px;
  margin-bottom: 15px;
  color: #222;
  text-align: center;
  color: #005bb5;
}

.quote-form-float input,
.quote-form-float textarea {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
  border: 1px solid #e0e0e0;
}

.quote-form-float button {
  width: 100%;
  padding: 10px;
  background: #007bff;
  color: #fff;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.3s ease;
  padding: 12px;
  background-color: #ff6c00;
  font-weight: 500;
}

.quote-form-float button:hover {
  background: #0056b3;
  background-color: #e56000;
}

/* Mobile quote button */
.quote-mobile-btn {
  display: none;
  position: fixed;
  bottom: 20px;
  left: 20px;
  padding: 10px 15px;
  background: #007bff;
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  z-index: 997;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 24px;
  border-radius: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  font-size: 14px;
  font-weight: 500;
}

/* Turbo Exhaust Manifold product page specific styles */
.product-gallery {
  display: -webkit-box; /* Older iOS/Android */
  display: -ms-flexbox; /* IE 10-11 */
  display: flex;
  -ms-flex-wrap: wrap; /* IE 10-11 */
  flex-wrap: wrap;
  gap: 15px;
  padding: 20px 0;
  justify-content: center;
}

.product-gallery .gallery-item {
  -webkit-box-flex: 1; /* Older webkit */
  -ms-flex: 1 1 280px; /* IE 10-11 */
  flex: 1 1 280px;
  max-width: 600px;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

.product-gallery .gallery-item:hover {
  transform: translateY(-5px);
}

.product-gallery .gallery-item img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* Quote form default value styles */
.quote-form-float input[value="Turbo Exhaust Manifold"] {
  color: #666;
  font-weight: 500;
}

/* ====================== 3. Responsive Adaptation (Globally effective) ====================== */
/* IE10+ specific Grid fallback */
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
  .product-entrance {
    display: -ms-grid;
    -ms-grid-columns: 1fr 1fr 1fr 1fr; /* 调整为4列 */
  }
  .grid-2 {
    display: -ms-grid;
    -ms-grid-columns: 1fr 1fr;
  }
  .product-sidebar ul {
    display: -ms-grid;
    -ms-grid-columns: 1fr 1fr 1fr 1fr 1fr; /* IE适配5列 */
  }
}

/* Tablet devices */
@media (max-width: 992px) {
  .product-entrance {
    -webkit-grid-template-columns: repeat(2, 1fr); /* 平板一行2个 */
    grid-template-columns: repeat(2, 1fr);
  }
  .product-sidebar ul {
    -webkit-grid-template-columns: repeat(3, 1fr); /* 平板列表一行3个 */
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Mobile devices */
@media (max-width: 768px) {
  /* Global adaptation */
  html {
    font-size: 14px; /* Reduced base font size for mobile */
  }

  /* Header adaptation */
  .header {
    -webkit-box-orient: vertical; /* Older webkit */
    -webkit-box-direction: normal;
    -ms-flex-direction: column; /* IE 10-11 */
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .header-info {
    min-width: 100%;
  }

  /* Navigation adaptation */
  .nav {
    -webkit-box-orient: vertical; /* Older webkit */
    -webkit-box-direction: normal;
    -ms-flex-direction: column; /* IE 10-11 */
    flex-direction: column;
    text-align: center;
  }

  /* Banner adaptation */
  .main-banner {
    height: 300px;
  }

  .banner-text {
    padding: 20px 25px;
    background: rgba(0,0,0,0.6);
    max-width: 600px;
  }

  .banner-text h2 {
    font-size: 22px;
  }

  .banner-text p {
    font-size: 14px;
  }

  .banner-btn {
    padding: 10px 20px;
    font-size: 14px;
    padding: 10px 25px;
    margin-top: 15px;
    background: #2563eb;
  }

  .banner-btn:hover {
    background: #1d4ed8;
  }

  /* Product sidebar adaptation */
  .product-sidebar {
    width: 100%;
    float: none;
    margin-right: 0;
    margin-bottom: 20px;
  }

  .product-sidebar ul {
    grid-template-columns: 1fr; /* 移动端列表单列 */
    gap: 8px;
  }

  .product-sidebar a {
    font-size: 14px; /* 恢复移动端字体 */
    padding: 8px 10px;
    white-space: normal; /* 允许换行 */
    text-overflow: unset; /* 取消省略号 */
  }

  .main-content {
    padding: 0;
  }

  /* Language switch adaptation */
  .lang-switch {
    float: none;
    text-align: center;
    margin-bottom: 10px;
  }

  /* Image adaptation */
  .card img.img-left {
    float: none;
    width: 100%;
    margin-right: 0;
    margin-bottom: 15px;
    max-width: 100%;
    width: 180px;
    margin-right: 20px;
    margin-bottom: 15px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.1);
  }

  /* Floating form adaptation */
  .quote-form-float {
    display: none;
  }

  .quote-mobile-btn {
    display: block;
  }

  /* Product entrance adaptation */
  .product-entrance {
    -webkit-grid-template-columns: 1fr;
    grid-template-columns: 1fr; /* 移动端产品卡片单列 */
  }

  /* Highlight section adaptation */
  .highlight {
    padding: 20px 15px;
  }

  /* WhatsApp button adaptation */
  .whatsapp-float {
    width: 50px;
    height: 50px;
    width: 50px;
    height: 50px;
    bottom: 20px;
    right: 20px;
  }

  .whatsapp-float img {
    width: 25px;
    height: 25px;
    width: 28px;
    height: 28px;
  }

  /* Trust endorsement adaptation */
  .trust-container {
    -webkit-box-orient: vertical; /* Older webkit */
    -webkit-box-direction: normal;
    -ms-flex-direction: column; /* IE 10-11 */
    flex-direction: column;
    gap: 16px;
    gap: 15px;
  }

  .trust-item {
    min-width: 100%;
    -webkit-box-flex: 1; /* Older webkit */
    -ms-flex: 1 1 140px; /* IE 10-11 */
    flex: 1 1 140px;
    padding: 10px;
  }

  .trust-item img {
    width: 60px;
    height: 60px;
  }

  /* Content section adaptation */
  .grid-2 {
    display: block;
  }

  /* Product gallery adaptation */
  .product-gallery {
    gap: 10px;
  }
}

/* Small mobile devices */
@media (max-width: 480px) {
  .product-entrance {
    -webkit-grid-template-columns: 1fr;
    grid-template-columns: 1fr;
  }

  .product-sidebar ul {
    grid-template-columns: 1fr;
  }

  .highlight {
    padding: 20px 15px;
  }

  .whatsapp-float {
    width: 50px;
    height: 50px;
  }

  .whatsapp-float img {
    width: 25px;
    height: 25px;
  }
}

/* Print style optimization */
@media print {
  .whatsapp-float, .quote-form-float, .quote-mobile-btn {
    display: none;
  }

  a {
    text-decoration: underline;
    color: #000;
  }
}