/* ========================================================================
   重庆车姐食品官网 - 全局样式表
   目录结构：
   1. 设计令牌与基础变量
   2. 基础重置与通用工具
   3. 布局组件 (导航栏、英雄区、价值主张)
   4. 产品与案例组件 (产品卡片、应用案例)
   5. 企业实力与品牌 (关于我们、实力展示、品牌生态)
   6. 合作与支持 (合作流程、FAQ)
   7. 转化与页脚 (CTA区、页脚)
   8. 弹窗与水印组件
   9. 动画与浮动组件
   10. 响应式媒体查询
   ======================================================================== */


/* ========================================================================
   1. 设计令牌与基础变量
   ======================================================================== */
:root {
  /* 1. 核心品牌色 (仅保留基础色，衍生色通过函数动态生成) */
  --primary-color: #ED7030;
  /* 废弃: --primary-hover: #D4611E; (改用 color-mix 动态计算) */
  /* 废弃: --primary-rgb: 237, 112, 48; (改用现代 rgba 语法) */
  /* 👇 新增：品牌色的纯 RGB 数值（用于需要自定义透明度的场景） */
  --primary-color-rgb: 237, 112, 48;

  /* 2. 语义化颜色 (支持未来一键切换暗色模式) */
  --bg-light: #f8f9fa;
  --bg-dark: #1a1a1a;

  /* 语义化文本色 (推荐命名方式) */
  --color-text-primary: #333;
  /* 替代 --text-dark */
  --color-text-secondary: #666;
  /* 替代 --text-gray */
  --color-text-inverse: #FFFFE0;
  /* 替代 --text-light */

  /* 3. 现代排版与间距系统 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 50px;

  /* 4. 动态阴影系统 (使用 CSS 变量结合透明度) */
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);

  /* 5. 动效与过渡 */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-bounce: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* 6. 字重系统 */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* 7. 布局与全局尺寸 */
  --nav-height: 70px;

/* =============================================
     卡片边框系统 (统一规范)
     ============================================= */

/* 1. 卡片默认边框：调整为 25% 透明度，配合加深阴影更显眼 */
  --card-border-default: color-mix(in srgb, var(--primary-color), transparent 0.25);

  /* 2. 卡片悬停边框：调整为 15% 透明度，明显的品牌色 */
  --card-border-hover: color-mix(in srgb, var(--primary-color), transparent 0.15);

  /* 3. 卡片激活/选中边框：调整为 5% 透明度，近乎纯品牌色 */
  --card-border-active: color-mix(in srgb, var(--primary-color), transparent 0.05);


/* 4. 卡片阴影：品牌色微光 + 灰色结构影 + 微立体内阴影 */
  --card-shadow-sm: 
    0 2px 10px rgba(0, 0, 0, 0.06), 
    0 8px 20px color-mix(in srgb, var(--primary-color), transparent 0.14),
    inset 0 0 0 1px rgba(0, 0, 0, 0.05);
    
  --card-shadow-md: 
    0 6px 16px rgba(0, 0, 0, 0.08), 
    0 16px 36px color-mix(in srgb, var(--primary-color), transparent 0.25),
    inset 0 0 0 1px rgba(0, 0, 0, 0.07);



  /* 8. 响应式断点管理 */
  --breakpoint-xs: 480px;
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
  --breakpoint-xxl: 1400px;

  /* 9. 按钮尺寸变量 */
  --btn-padding-sm: 8px 16px;
  --btn-padding-md: 12px 28px;
  --btn-padding-lg: 16px 36px;
  --btn-font-size-sm: 14px;
  --btn-font-size-md: 16px;
  --btn-font-size-lg: 18px;


  /* 10. 备案信息相关变量 */
  --filing-color-default: rgba(255, 255, 255, 0.55);
  --filing-color-hover: var(--primary-color);
  --filing-underline-color: color-mix(in srgb, var(--primary-color), transparent 0.5);
  --filing-transition-speed: 0.4s;
  --filing-transition-easing: cubic-bezier(0.25, 0.8, 0.25, 1);

  /* 字体家族定义 */
  /* 标题：DM Sans(数字/英文) + 思源黑体(中文) */
  --font-heading: "DM Sans", "Noto Sans SC", "思源黑体", -apple-system, BlinkMacSystemFont, sans-serif;
  /* 正文：DM Sans(数字/英文) + 霞鹜文楷(中文) */
  --font-body: "DM Sans", "LXGW WenKai Screen", "霞鹜文楷 GB", "STKaiti", "KaiTi", serif;
}


/* 🌟 暗色模式支持 */
@media (prefers-color-scheme: dark) {
  :root {
    --color-text-primary: #f0f0f0;
    --color-text-secondary: #b0b0b0;
    /* 修正：暗色模式下，浅色背景应变为深色 */
    --bg-light: #1a1a1a; 
    /* 修正：暗色模式下，深色背景通常更暗或保持不变，而不是变浅 */
    --bg-dark: #111111; 
    /* 阴影在暗色模式下需要更深、更柔和 */
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.3);
  }
}



/* ========================================================================
   2. 基础重置与通用工具
   ======================================================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  padding-top: var(--nav-height);
  /* 使用变量动态计算安全间距 */
  color: var(--color-text-primary);
  line-height: 1.7;
  letter-spacing: 0.02em;
  overflow-x: hidden;
  font-variant-numeric: tabular-nums;
  /* 强制数字等宽，对齐规格表 */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* 标题通用类：强制使用思源黑体 */
h1,
h2,
h3,
h4,
h5,
h6,
.section-title,
.hero-title,
.value-title,
.product-name,
.case-name,
.about-title,
.step-title,
.brand-name,
.nav-link,
.logo-brand {
  font-family: var(--font-heading);
  font-weight: 700;
  /* 匹配引入的 Noto Sans SC Bold */
  letter-spacing: 0.02em;
  /* 增加极微小的字间距，提升稳重感 */
}

/* 针对数字显示的优化 (等宽数字)，防止数字跳动 */
.price,
.phone-number,
.stat-value,
.hero-stat-value {
  font-variant-numeric: tabular-nums;
}

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

a {
  text-decoration: none;
  color: inherit;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.highlight {
  color: var(--primary-color);
  font-weight: var(--font-weight-bold);
}

.section-header {
  text-align: center;
  margin-bottom: 50px;
}

.section-title {
  font-size: 32px;
  font-weight: var(--font-weight-bold);
  margin-bottom: 15px;
  color: var(--color-text-primary);
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
}

.section-cta {
  text-align: center;
  margin-top: 40px;
}

/* 优化后的通用按钮系统 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  position: relative;
  z-index: 1;
  font-family: var(--font-heading);
  font-weight: var(--font-weight-medium);
  transition: all 0.3s ease;
  text-decoration: none;
  white-space: nowrap;
  /* 核心修复：强制文字不换行 */
  overflow: hidden;
  will-change: transform, box-shadow;
  min-height: 44px;
  /* 核心修复：保障移动端最小触控高度 */
  width: fit-content;
  /* 核心修复：宽度随内容自适应，拒绝强行撑满 */
}


.btn--primary,
.btn-primary {
  background-color: var(--primary-color) !important;
  color: var(--color-text-inverse);
  padding: var(--btn-padding-md);
  font-size: var(--btn-font-size-md);
  border-radius: var(--radius-xl);
  border: none;
}


.btn--primary:hover {
  background-color: color-mix(in srgb, var(--primary-color), black 15%);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary-color), transparent 0.3);
}

.btn--secondary,
.btn-secondary {
  background-color: transparent !important;
  color: #fff !important;
  border: 2px solid #fff !important;
  padding: var(--btn-padding-md);
  font-size: var(--btn-font-size-md);
  border-radius: var(--radius-xl);
}

.btn--secondary:hover,
.btn-secondary:hover {
  background-color: #fff !important;
  color: var(--color-text-primary) !important;
  border-color: #fff !important;
}



.btn--submit {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  padding: 14px 40px;
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  width: 100%;
}

.btn--submit:hover {
  background-color: color-mix(in srgb, var(--primary-color), black 15%);
}

.btn--sm {
  padding: var(--btn-padding-sm);
  font-size: var(--btn-font-size-sm);
}

.btn--md {
  padding: var(--btn-padding-md);
  font-size: var(--btn-font-size-md);
}

.btn--lg {
  padding: var(--btn-padding-lg);
  font-size: var(--btn-font-size-lg);
}


/* ========================================================================
   2026 全局卡片统一规范 
   ======================================================================== */

/* 1. 定义通用卡片基类：强制重置局部样式，注入品牌微光 */
.card-base,
.product-card,
.value-card,
.strength-item,
.faq-item,
.about-stat-card,
.cta-qr-item,
.stat-item,
.strength-stat-card,
.process-step .step-card,
.case-card,
.strength-showcase-card {
  --card-radius: var(--radius-lg);

  /* 强制重置边框与圆角 */
  border: 2px solid var(--card-border-default) !important;
  border-radius: var(--card-radius) !important;
  background-color: #fff;
  
  /* 核心：注入加深的品牌色微光阴影 */
  box-shadow: 
    0 2px 10px rgba(0, 0, 0, 0.06), 
    0 8px 20px color-mix(in srgb, var(--primary-color), transparent 0.14),
    inset 0 0 0 1px rgba(0, 0, 0, 0.05) !important;
    
  transition: all 0.3s ease, transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  overflow: hidden;
  position: relative;
  cursor: default;
}

/* 2. 统一悬停状态：强烈的品牌聚焦微光 */
.card-base:hover,
.product-card:hover,
.value-card:hover,
.strength-item:hover,
.faq-item:hover,
.about-stat-card:hover,
.cta-qr-item:hover,
.stat-item:hover,
.strength-stat-card:hover,
.process-step .step-card:hover,
.case-card:hover,
.strength-showcase-card:hover {
  border-color: var(--card-border-hover) !important;
  
  /* 悬停时：扩大橙色光晕范围和浓度，内阴影稍微变深 */
  box-shadow: 
    0 10px 24px rgba(0, 0, 0, 0.08), 
    0 20px 48px color-mix(in srgb, var(--primary-color), transparent 0.35),
    inset 0 0 0 1px rgba(0, 0, 0, 0.09) !important;
    
  /* 核心修复：移除 scale(1.01)，仅保留上浮，避免覆盖局部的 transform */
  transform: translateY(-6px) !important;
}

/* 3. 统一激活/选中状态：极致的品牌穿透光 */
.card-base.active,
.product-card.active,
.value-card.active,
.strength-item.active,
.faq-item.active,
.about-stat-card.active,
.cta-qr-item.active,
.stat-item.active,
.strength-stat-card.active,
.process-step .step-card.active,
.case-card.active,
.strength-showcase-card.active {
  border-color: var(--card-border-active) !important;
  background-color: color-mix(in srgb, var(--primary-color), transparent 0.03);
  
  /* 激活时：光晕最强烈，模拟按下聚焦 */
  box-shadow: 
    0 6px 16px rgba(0, 0, 0, 0.08), 
    0 14px 36px color-mix(in srgb, var(--primary-color), transparent 0.4),
    inset 0 0 0 1px rgba(0, 0, 0, 0.12) !important;
}







/* ========================================================================
   2026 按钮与页脚统一规范 (品牌色微光系统)
   ======================================================================== */

/* 1. 全局按钮统一规范 */
:where(.btn:not(.btn-primary):not(.btn-secondary):not(.btn--primary):not(.btn--secondary), .button:not(.btn-primary):not(.btn-secondary), [type="submit"], [type="button"]) {
  /* 基础样式重置 */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 1;

  /* 统一过渡动画 */
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* 按钮悬停效果：品牌色微光 */
:where(.btn:not(.btn-primary):not(.btn-secondary):not(.btn--primary):not(.btn--secondary), .button:not(.btn-primary):not(.btn-secondary), [type="submit"], [type="button"]):hover {
  /* 核心：使用品牌色生成柔和的微光阴影 */
  box-shadow: 0 8px 24px color-mix(in srgb, var(--primary-color), transparent 0.35);

  /* 轻微上浮效果，增加交互反馈 */
  transform: translateY(-3px);
}

/* 按钮点击效果：微光收缩 */
:where(.btn:not(.btn-primary):not(.btn-secondary):not(.btn--primary):not(.btn--secondary), .button:not(.btn-primary):not(.btn-secondary), [type="submit"], [type="button"]):active {
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary-color), transparent 0.4);
  transform: translateY(-1px);
}


/* ========================================================================
   2026 页脚备案信息：微光 + 动态下划线系统
   ======================================================================== */

/* 1. 默认状态：低调的暗色文字 */
.footer-compliance,
.footer-compliance .filing-link {
  color: rgba(255, 255, 255, 0.4);
  /* 40% 透明度的白色 */
  text-decoration: none;
  /* 清除默认下划线 */
  transition: color 0.3s ease;
  /* 颜色过渡 */
  display: inline-block;
  position: relative;
  font-size: 14px;
  /* 保持字体大小适中 */
}

/* 2. 链接内的图片（备案图标）也需要继承颜色状态 */
.footer-compliance .filing-link img {
  height: 16px;
  /* 控制图标大小 */
  vertical-align: middle;
  /* 垂直居中对齐 */
  margin-right: 4px;
  /* 图标与文字的间距 */
  filter: brightness(1.5);
  /* 默认状态，更低调 */
  transition: filter 0.3s ease;
  /* 图标滤镜过渡 */
}

/* ========================================================================
   终极修复：备案链接水平一行排列 + 动态下划线
   ======================================================================== */

/* 1. 核心修复：使用 Flex 布局强制图标和文字在同一行 */
.footer-compliance .filing-link,
.beian-container .filing-link {
  display: inline-flex !important;
  /* 核心：行内弹性盒子，强制不换行 */
  align-items: center !important;
  /* 核心：图标和文字垂直居中对齐 */
  gap: 4px;
  /* 控制图标和文字之间的间距 */

  position: relative !important;
  /* 为下划线提供定位参考 */
  text-decoration: none !important;
  /* 清除默认下划线 */
  vertical-align: middle;
  /* 确保整个链接与其他文字对齐 */

  transition: color 0.3s ease;
}

/* 2. 确保图标不会撑开高度或错位 */
.footer-compliance .filing-link img,
.beian-container .filing-link img {
  height: 16px;
  width: auto;
  display: block;
  /* 消除图片底部的默认基线间隙 */
}

/* 3. 绘制下划线 */
.footer-compliance .filing-link::after,
.beian-container .filing-link::after {
  content: '' !important;
  position: absolute !important;
  bottom: 0px !important;
  left: 0 !important;
  width: 100% !important;
  height: 1px !important;
  background-color: var(--primary-color) !important;

  /* 动画控制 */
  transform: scaleX(0) !important;
  transform-origin: left !important;
  transition: transform var(--filing-transition-speed) var(--filing-transition-easing) !important;
}

/* 4. 悬停时展开下划线 */
.footer-compliance .filing-link:hover::after,
.beian-container .filing-link:hover::after {
  transform: scaleX(1) !important;
}

/* ========================================================================
   2026 启动品牌微光加载过渡 (Loading Screen)
   ======================================================================== */

.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: #fff;
  /* 纯白底色，保持干净 */
  z-index: 9999;
  /* 确保在最顶层 */
  display: flex;
  align-items: center;
  justify-content: center;

  /* 核心：退场过渡动画 */
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

/* 微光呼吸核心元素：真正的无边界"光晕" */
.loading-glow {
  /* 1. 尺寸设定 */
  width: 320px;
  height: 320px;
  border-radius: 50%;

  /* 2. 核心：使用径向渐变，中心亮，边缘完全消散 */
  background: radial-gradient(circle at center,
      rgba(var(--primary-color-rgb), 0.8) 0%,
      /* 中心高亮 */
      rgba(var(--primary-color-rgb), 0.3) 40%,
      /* 中段过渡 */
      transparent 75%
      /* 边缘完全透明 */
    );

  /* 3. 终极武器：高斯模糊滤镜，彻底抹除任何物理边界 */
  filter: blur(50px);

  /* 4. 呼吸动画 */
  animation: microGlowBreathe 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

/* 呼吸动画关键帧优化 */
@keyframes microGlowBreathe {

  0%,
  100% {
    transform: scale(0.8);
    opacity: 0.6;
  }

  50% {
    transform: scale(1.3);
    opacity: 1;
  }
}

/* 加载完成时的退场状态 */
.loading-screen.fade-out {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

/* ========================================================================
   3. 布局组件
   ======================================================================== */

/* --- 3.1 导航栏 --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding-top: env(safe-area-inset-top);
  /* 刘海屏适配 */
  background: rgba(255, 255, 255, 0.0);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  box-shadow: none;
  border-bottom: 1px solid transparent;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

@supports not (backdrop-filter: blur(16px)) {
  .navbar {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }
}

.navbar.nav-at-top {
  background: rgba(255, 255, 255, 0.0);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  box-shadow: none;
  border-bottom: 1px solid transparent;
  transform: translateY(0);
}

.navbar.nav-visible {
  transform: translateY(0);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.07);
  border-bottom: 1px solid rgba(255, 255, 255, 0.4);
}

.navbar.nav-hidden {
  transform: translateY(-100%);
  background: rgba(255, 255, 255, 0.0);
  backdrop-filter: blur(0px);
  -webkit-backdrop-filter: blur(0px);
  box-shadow: none;
}

/* --- 导航栏元素颜色适配 --- */
.navbar.nav-at-top .logo-brand {
  color: #fff;
}

.navbar.nav-visible .logo-brand {
  color: var(--color-text-primary);
}

.navbar.nav-at-top .logo-slogan {
  color: rgba(255, 255, 255, 0.8);
}

.navbar.nav-visible .logo-slogan {
  color: #999;
}

.navbar.nav-at-top .nav-link {
  color: #fff;
}

.navbar.nav-visible .nav-link {
  color: var(--color-text-primary);
}

.navbar.nav-visible .nav-link::after {
  background-color: var(--primary-color);
}

.navbar.nav-at-top .nav-link::after {
  background-color: #fff;
}

.navbar.nav-at-top .lang-link {
  color: rgba(255, 255, 255, 0.8);
}

.navbar.nav-visible .lang-link {
  color: var(--color-text-secondary);
}

.navbar.nav-at-top .lang-divider {
  color: rgba(255, 255, 255, 0.5);
}

.navbar.nav-visible .lang-divider {
  color: #ddd;
}

.navbar.nav-at-top .nav-toggle {
  color: #fff;
}

.navbar.nav-visible .nav-toggle {
  color: var(--color-text-primary);
}

.navbar.nav-at-top .nav-cta {
  position: relative;
  overflow: hidden;
  background-color: color-mix(in srgb, var(--primary-color), transparent 0.6);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.4);
  box-shadow: 0 4px 15px color-mix(in srgb, var(--primary-color), transparent 0.3);
  z-index: 1;
  transition: all 0.3s ease;
}

.navbar.nav-at-top .nav-cta:hover {
  background-color: color-mix(in srgb, var(--primary-color), transparent 0.4);
  border-color: rgba(255, 255, 255, 0.8);
  box-shadow: 0 6px 20px color-mix(in srgb, var(--primary-color), transparent 0.5);
  transform: translateY(-2px);
}

.navbar.nav-at-top .nav-cta::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

.navbar.nav-visible .nav-cta {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary-color), transparent 0.3);
}

.navbar.nav-visible .nav-cta:hover {
  background-color: color-mix(in srgb, var(--primary-color), black 15%);
  transform: translateY(-2px);
  box-shadow: 0 6px 15px color-mix(in srgb, var(--primary-color), transparent 0.4);
}

.navbar.nav-at-top .nav-cta-mobile {
  background-color: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.navbar.nav-visible .nav-cta-mobile {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  transition: opacity var(--transition-fast);
}

.logo-link:hover {
  opacity: 0.8;
}

.logo-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.logo-text-right {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.logo-brand {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1.2;
  letter-spacing: 0.05em;
}

.logo-slogan {
  font-size: 11px;
  color: #999;
  margin-top: 2px;
  padding-left: 2px;
  letter-spacing: 0.15em;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  text-decoration: none;
  color: var(--color-text-primary);
  font-size: 15px;
  position: relative;
  transition: color var(--transition-fast);
  padding: 5px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--primary-color);
  transition: width var(--transition-base), left var(--transition-base);
  border-radius: 1px;
}

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

.nav-link:hover::after {
  width: 100%;
  left: 0;
}

.nav-link.active {
  color: var(--primary-color);
  font-weight: 600;
}

.nav-link.active::after {
  width: 100%;
  left: 0;
}

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-inline-start: 15px;
}

.lang-switcher-mobile {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-inline-end: 5px;
}

.lang-divider {
  color: #ddd;
  font-size: 14px;
  user-select: none;
}

.lang-link {
  font-size: 14px;
  color: var(--color-text-secondary);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-fast);
  padding-bottom: 2px;
}

.lang-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1.5px;
  background-color: var(--primary-color);
  transition: width var(--transition-base), left var(--transition-base);
  border-radius: 1px;
}

.lang-link:hover,
.lang-link.active {
  color: var(--primary-color);
  font-weight: 600;
}

.lang-link:hover::after,
.lang-link.active::after {
  width: 100%;
  left: 0;
}

.nav-cta {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 2px 10px;
  font-size: 14px;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.nav-cta-mobile {
  background-color: var(--primary-color);
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 2px 6px;
  font-size: 14px;
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}

.nav-cta:hover,
.nav-cta-mobile:hover {
  background-color: color-mix(in srgb, var(--primary-color), black 15%);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary-color), transparent 0.3);
}

.nav-cta-pulse {
  animation: ctaPulse 2s infinite;
}

@keyframes ctaPulse {
  0% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--primary-color), transparent 0.4);
  }

  70% {
    box-shadow: 0 0 0 10px color-mix(in srgb, var(--primary-color), transparent 0);
  }

  100% {
    box-shadow: 0 0 0 0 color-mix(in srgb, var(--primary-color), transparent 0);
  }
}

.nav-mobile {
  display: none;
  align-items: center;
  gap: 10px;
}

.nav-toggle {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

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

.nav-toggle.active {
  color: var(--primary-color);
  transform: rotate(90deg);
  transition: transform 0.3s ease, color 0.3s ease;
}


/* --- 3.2 英雄区 --- */
.hero-section {
  position: relative;
  min-height: calc(100vh - 80px);
  max-height: 800px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--bg-dark);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background-color: #1a1a1a;
}

.hero-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    linear-gradient(to right, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.5) 35%, rgba(0, 0, 0, 0.2) 65%, rgba(0, 0, 0, 0.1) 100%);
  z-index: 1
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  padding: 0 20px;
  padding-top: 80px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.hero-text {
  max-width: 650px;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.hero-highlight {
  color: var(--primary-color);
  position: relative;
  display: inline-block;
}

.hero-stat-value {
  font-weight: 800;
  font-size: 1.2em;
  color: var(--primary-color);
  display: inline-flex;
  align-items: baseline;
}

.hero-stat-unit {
  font-weight: 800;
  font-size: 1.2em;
  color: var(--primary-color);
}

.hero-subtitle {
  font-size: 20px;
  margin-bottom: 35px;
  opacity: 0.9;
  line-height: 1.6;
  font-weight: 300;
}

.hero-points {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.hero-point {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 16px;
  font-weight: var(--font-weight-medium);
}

.hero-point-icon {
  color: var(--primary-color);
  font-size: 18px;
}

.hero-point-divider {
  width: 1px;
  height: 20px;
  background-color: rgba(255, 255, 255, 0.3);
}

.hero-buttons {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s forwards;
}

.delay-1 {
  animation-delay: 0.1s;
}

.delay-2 {
  animation-delay: 0.3s;
}

.delay-3 {
  animation-delay: 0.5s;
}

.delay-4 {
  animation-delay: 0.7s;
}

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.btn-pulse {
  position: relative;
  overflow: hidden;
}

.btn-pulse::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

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


/* --- 3.3 价值主张区 --- */
.value-section {
  padding: 100px 0;
  background-color: #fafafa;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.value-section::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='20' viewBox='0 0 100 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M21.184 20c.357-.13.72-.264 1.088-.402l1.768-.661C33.64 15.347 39.647 14 50 14c10.271 0 15.362 1.222 24.629 4.928.955.383 1.869.74 2.75 1.072h6.225c-2.51-.73-5.139-1.691-8.233-2.928C65.888 13.278 60.562 12 50 12c-10.626 0-16.855 1.397-26.66 5.063l-1.767.662c-2.475.923-4.66 1.674-6.724 2.275h6.335zm0-20C13.258 2.892 8.077 4 0 4V2c5.744 0 9.951-.574 14.85-2h6.334zM77.38 0C85.239 2.966 90.502 4 100 4V2c-6.842 0-11.386-.542-16.396-2h-6.225zM0 14c8.44 0 13.718-1.21 22.272-4.402l1.768-.661C33.64 5.347 39.647 4 50 4c10.271 0 15.362 1.222 24.629 4.928C84.112 12.722 89.438 14 100 14v-2c-10.271 0-15.362-1.222-24.629-4.928C65.888 3.278 60.562 2 50 2 39.374 2 33.145 3.397 23.34 7.063l-1.767.662C13.223 10.84 8.163 12 0 12v2z' fill='%23ED7030' fill-opacity='0.04' fill-rule='evenodd'/%3E%3C/svg%3E");
  background-size: 100px 20px;
  background-position: center;
  background-repeat: repeat;
}



.value-section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 150px;
  z-index: 1;
  pointer-events: none;
  background: linear-gradient(to top, rgba(250, 250, 250, 0) 0%, rgba(250, 250, 250, 1) 100%);
}

.value-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: stretch;
}

.value-card {
  padding: 40px 30px;
  border-radius: 16px;
  background-color: #fff;
  text-align: center;
  transition: transform var(--transition-bounce), box-shadow var(--transition-base), border-color var(--transition-base);
  position: relative;
  overflow: visible;
  will-change: transform;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 1;
}

.value-card:hover {
  transform: translateY(-8px);
}

.value-card::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--primary-color), transparent 0.15) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
  z-index: -1;
  pointer-events: none;
}

.value-card:hover::before {
  width: 120%;
  height: 120%;
}

.value-title,
.value-desc {
  position: relative;
  z-index: 3;
}

.value-icon-wrapper {
  position: relative;
  z-index: 3;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 25px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary-color), transparent 0.1), color-mix(in srgb, var(--primary-color), transparent 0.05));
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.value-icon {
  font-size: 32px;
  color: var(--primary-color);
  transition: transform var(--transition-base), color var(--transition-base);
}

.value-card:hover .value-icon-wrapper {
  background: linear-gradient(135deg, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--primary-color), transparent 0.3);
}

.value-card:hover .value-icon {
  transform: scale(1.1);
  color: #fff;
}



.value-title {
  font-size: 20px;
  margin-bottom: 15px;
  color: var(--color-text-primary);
}

.value-desc {
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.8;
}

.value-highlight {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
  position: relative;
}


/* ========================================================================
   4. 产品与案例组件
   ======================================================================== */

/* --- 4.1 产品解决方案区 --- */
.products-section {
  padding: 80px 0;
  background-color: var(--bg-light);
}

.category-tabs-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 50px;
}

.category-tabs {
  display: inline-flex;
  gap: 8px;
  background-color: #fff;
  padding: 6px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  position: relative;
}

.category-tab {
  padding: 10px 24px;
  border: none;
  background-color: transparent;
  border-radius: 50px;
  cursor: pointer;
  transition: color var(--transition-fast);
  font-size: 15px;
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  position: relative;
  z-index: 2;
}

.category-tab.active {
  color: #fff;
}

.category-tab:not(.active):hover {
  color: var(--primary-color);
}

.tabs-slider {
  position: absolute;
  top: 6px;
  left: 6px;
  height: calc(100% - 12px);
  width: 100px;
  background-color: var(--primary-color);
  border-radius: 50px;
  transition: transform var(--transition-bounce);
  z-index: 1;
  box-shadow: 0 4px 10px color-mix(in srgb, var(--primary-color), transparent 0.3);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  grid-auto-flow: dense;
  align-items: start;
}

.product-card {
  background-color: #fff;
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  will-change: transform, opacity;
  transform: perspective(800px) rotateX(0deg) rotateY(0deg) scale(1);
  transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.4s ease, border-color 0.3s ease, opacity 0.4s ease;
}

.product-card:hover {
  /* 保持产品卡独特的 3D 效果，同时吸收统一的上浮距离 */
  transform: perspective(800px) rotateX(2deg) translateY(-6px) scale(1.01);
  box-shadow: 0 25px 50px -12px color-mix(in srgb, var(--primary-color), transparent 0.2);
  border-color: color-mix(in srgb, var(--primary-color), transparent 0.1);
}


.product-card.hidden {
  opacity: 0;
  transform: perspective(800px) scale(0.95);
  pointer-events: none;
  display: none;
}

.product-card.visible-card {
  opacity: 1;
  transform: perspective(800px) scale(1);
  display: block;
}

.product-skeleton,
.product-content {
  width: 100%;
  transition: opacity 0.4s ease, max-height 0.5s ease;
  overflow: hidden;
}

.product-skeleton {
  max-height: 500px;
  opacity: 1;
  padding: 20px;
  box-sizing: border-box;
}

.product-content {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  padding: 0;
}

.product-card.loaded .product-skeleton {
  max-height: 0;
  opacity: 0;
  pointer-events: none;
  padding: 0;
  margin: 0;
  border: 0;
}

.product-card.loaded .product-content {
  max-height: 500px;
  opacity: 1;
  overflow: visible;
  padding: 0;
}

@keyframes shimmer-reflect {
  0% {
    background-position: -200% 0;
  }

  100% {
    background-position: 200% 0;
  }
}

.skeleton-loader {
  background-color: #e8e8e8;
  background-image: radial-gradient(circle, rgba(255, 255, 255, 0.8) 0%, transparent 70%);
  background-size: 50% 100%;
  background-repeat: no-repeat;
  animation: shimmer-reflect 1.8s infinite ease-in-out;
}

.skeleton-image {
  width: 100%;
  height: 220px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.skeleton-text {
  width: 80%;
  height: 18px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.skeleton-text.short {
  width: 50%;
}

.product-image {
  height: 220px;
  overflow: hidden;
  position: relative;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.product-card:hover .product-image img {
  transform: scale(1.08);
}

.product-info {
  padding: 20px 24px 25px;
  position: relative;
  z-index: 4;
  margin-top: -10px;
  background-color: #fff;
}

.product-name {
  font-size: 18px;
  margin-bottom: 8px;
  color: var(--color-text-primary);
  font-weight: 600;
}

.product-advantage {
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 15px;
  line-height: 1.5;
}

.product-link {
  color: var(--primary-color);
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  transition: gap var(--transition-fast);
}

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

.btn-download {
  background: linear-gradient(135deg, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%));
  padding: 14px 35px;
  font-size: 16px;
  border-radius: 50px;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--primary-color), transparent 0.3);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 25px color-mix(in srgb, var(--primary-color), transparent 0.4);
}

.btn-download i {
  margin-inline-end: 8px;
}


/* --- 4.2 产品应用案例区 --- */
.cases-section {
  padding: 80px 0;
  background-color: #fff;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-bottom: 60px;
}

.case-card {
  position: relative;
  padding: 35px 30px;
  border-radius: 16px;
  background-color: #fff;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  overflow: hidden;
  will-change: transform;
}

.case-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: linear-gradient(to bottom, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%));
  transition: height var(--transition-base);
  border-end-end-radius: 4px;
}

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


.case-card:hover::before {
  height: 100%;
}

.case-number {
  position: absolute;
  top: 10px;
  right: 20px;
  font-size: 60px;
  font-weight: var(--font-weight-black);
  color: rgba(0, 0, 0, 0.03);
  line-height: 1;
  pointer-events: none;
}

.case-type {
  display: inline-block;
  color: var(--primary-color);
  font-size: 13px;
  font-weight: 600;
  background: color-mix(in srgb, var(--primary-color), transparent 0.1);
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 15px;
}

.case-name {
  font-size: 22px;
  margin-bottom: 15px;
  color: var(--color-text-primary);
}

.case-result {
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--color-text-primary);
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.case-result i {
  color: var(--primary-color);
  font-size: 14px;
}

.case-testimonial {
  color: var(--color-text-secondary);
  font-style: italic;
  font-size: 14px;
  line-height: 1.7;
  position: relative;
  padding-inline-start: 15px;
  border-inline-start: 2px solid #eee;
}

.stats-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
  padding: 50px 0;
  border-top: 1px solid #eee;
  border-bottom: 1px solid #eee;
  margin-bottom: 40px;
}

.stat-item {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 30px 20px;
  background-color: #fff;
  border: 1px solid #f0f0f0;
  border-radius: 16px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  will-change: transform;
}

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


.stat-icon-box {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary-color), transparent 0.1), color-mix(in srgb, var(--primary-color), transparent 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.stat-icon-box i {
  font-size: 24px;
  color: var(--primary-color);
  transition: transform var(--transition-base), color var(--transition-base);
}

.stat-item:hover .stat-icon-box {
  background: linear-gradient(135deg, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--primary-color), transparent 0.3);
}

.stat-item:hover .stat-icon-box i {
  color: #fff;
  transform: scale(1.1);
}

.stat-value {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1;
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: 8px;
}

.stat-unit {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-color);
  margin-inline-start: 2px;
}

.stat-label {
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: var(--font-weight-medium);
  margin-top: 0;
}

.certifications {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 40px;
}

.cert-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
}

.cert-icon {
  color: var(--primary-color);
  font-size: 20px;
}

.btn-glow {
  position: relative;
  font-size: 18px;
  padding: 16px 40px;
  background: linear-gradient(135deg, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%));
  border: none;
  overflow: hidden;
  box-shadow: 0 8px 25px color-mix(in srgb, var(--primary-color), transparent 0.3);
}

.btn-glow::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -60%;
  width: 20%;
  height: 200%;
  background: rgba(255, 255, 255, 0.3);
  transform: rotate(45deg);
  transition: left 0.6s ease;
}

.btn-glow:hover::after {
  left: 120%;
}

.btn-glow:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px color-mix(in srgb, var(--primary-color), transparent 0.4);
}


/* ========================================================================
   5. 企业实力与品牌
   ======================================================================== */

/* --- 5.1 关于我们区 --- */
.about-section {
  padding: 100px 0;
  background-color: #fff;
  position: relative;
  overflow: hidden;
}

.about-section::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='20' viewBox='0 0 100 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M21.184 20c.357-.13.72-.264 1.088-.402l1.768-.661C33.64 15.347 39.647 14 50 14c10.271 0 15.362 1.222 24.629 4.928.955.383 1.869.74 2.75 1.072h6.225c-2.51-.73-5.139-1.691-8.233-2.928C65.888 13.278 60.562 12 50 12c-10.626 0-16.855 1.397-26.66 5.063l-1.767.662c-2.475.923-4.66 1.674-6.724 2.275h6.335zm0-20C13.258 2.892 8.077 4 0 4V2c5.744 0 9.951-.574 14.85-2h6.334zM77.38 0C85.239 2.966 90.502 4 100 4V2c-6.842 0-11.386-.542-16.396-2h-6.225zM0 14c8.44 0 13.718-1.21 22.272-4.402l1.768-.661C33.64 5.347 39.647 4 50 4c10.271 0 15.362 1.222 24.629 4.928C84.112 12.722 89.438 14 100 14v-2c-10.271 0-15.362-1.222-24.629-4.928C65.888 3.278 60.562 2 50 2 39.374 2 33.145 3.397 23.34 7.063l-1.767.662C13.223 10.84 8.163 12 0 12v2z' fill='%23ED7030' fill-opacity='0.04' fill-rule='evenodd'/%3E%3C/svg%3E");
  background-size: 100px 20px;
  background-position: center;
  background-repeat: repeat;
}

.about-bg-text {
  position: absolute;
  top: 50%;
  left: -5%;
  transform: translateY(-50%);
  font-size: 180px;
  font-weight: var(--font-weight-black);
  color: rgba(0, 0, 0, 0.02);
  letter-spacing: 10px;
  pointer-events: none;
  white-space: nowrap;
  z-index: -1;
  user-select: none;
  line-height: 1;
}

.about-content {
  display: flex;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.about-left,
.about-right {
  flex: 1;
  min-width: 300px;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
}

.about-left {
  position: relative;
}

.about-left img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  transition: transform 0.6s ease;
}

.about-left:hover img {
  transform: scale(1.02);
}

.about-img-border {
  position: absolute;
  top: 20px;
  left: 20px;
  width: 100%;
  height: 100%;
  border: 2px solid color-mix(in srgb, var(--primary-color), transparent 0.3);
  border-radius: 16px;
  z-index: -1;
  transition: all 0.4s ease;
}

.about-left:hover .about-img-border {
  top: 15px;
  left: 15px;
  border-color: color-mix(in srgb, var(--primary-color), transparent 0.6);
}

.about-img-badge {
  position: absolute;
  bottom: 30px;
  left: -10px;
  background: linear-gradient(135deg, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%));
  color: #fff;
  padding: 12px 25px 12px 20px;
  border-radius: 0 50px 50px 0;
  box-shadow: 0 8px 20px color-mix(in srgb, var(--primary-color), transparent 0.4);
  display: flex;
  align-items: center;
  gap: 8px;
}

.about-img-badge i {
  font-size: 18px;
}

.about-tag {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  gap: 4px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary-color) 0%, #FF8C42 100%);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 12px;
  box-shadow:
    0 2px 4px color-mix(in srgb, var(--primary-color), transparent 0.2),
    0 4px 12px color-mix(in srgb, var(--primary-color), transparent 0.15);
  letter-spacing: 0.2px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  white-space: nowrap;
  width: fit-content;
}

.about-tag i {
  font-size: 11px;
  opacity: 0.9;
  transition: transform 0.3s ease;
}

.about-tag:hover {
  transform: translateY(-2px);
  box-shadow:
    0 4px 8px color-mix(in srgb, var(--primary-color), transparent 0.3),
    0 8px 20px color-mix(in srgb, var(--primary-color), transparent 0.2);
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary-color), black 15%) 0%, #FF8C42 100%);
}

.about-tag:hover i {
  transform: scale(1.1) rotate(5deg);
}

.about-title {
  font-size: 32px;
  margin-bottom: 24px;
  color: var(--color-text-primary);
  line-height: 1.3;
  letter-spacing: -0.5px;
  position: relative;
  padding-bottom: 15px;
}

.about-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.about-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 35px;
  text-align: justify;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: auto;
}

.about-stat-card {
  background: #fff;
  border-radius: 12px; /* 这里保留 12px 是因为全局是 16px，如果这里需要更小的圆角可以保留覆盖 */
  padding: 20px 15px;
  display: flex;
  align-items: center;
  gap: 15px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  cursor: default;
}


.about-stat-card:hover {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--primary-color), transparent 0.2);
  box-shadow: 0 10px 25px color-mix(in srgb, var(--primary-color), transparent 0.08);
}

.stat-icon-box {
  width: 50px;
  height: 50px;
  border-radius: 10px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary-color), transparent 0.1), color-mix(in srgb, var(--primary-color), transparent 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.stat-icon-box i {
  font-size: 20px;
  color: var(--primary-color);
  transition: transform var(--transition-base), color var(--transition-base);
}

.about-stat-card:hover .stat-icon-box {
  background: linear-gradient(135deg, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%));
  box-shadow: 0 4px 10px color-mix(in srgb, var(--primary-color), transparent 0.2);
}

.about-stat-card:hover .stat-icon-box i {
  color: #fff;
  transform: scale(1.1);
}

.stat-info {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-text-primary);
  line-height: 1;
  margin-bottom: 4px;
  letter-spacing: -0.5px;
}

.stat-unit {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-color);
  margin-inline-start: 2px;
}

.stat-label {
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

@media screen and (max-width: 768px) {
  .about-right {
    padding-left: 0;
    padding-top: 30px;
  }

  .about-title {
    font-size: 26px;
    margin-bottom: 20px;
  }

  .about-desc {
    font-size: 15px;
    margin-bottom: 30px;
  }

  .about-stats {
    grid-template-columns: 1fr;
    gap: 15px;
  }

  .stat-value {
    font-size: 28px;
  }
}



/* --- 5.2 实力展示区 --- */
.strength-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.strength-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4 / 3;
  box-shadow: var(--shadow-sm);
}

.strength-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.strength-item:hover img {
  transform: scale(1.1);
}

.strength-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
  display: flex;
  align-items: flex-end;
  padding: 20px;
  transition: height var(--transition-base), background var(--transition-base);
}

.strength-item:hover .strength-overlay {
  height: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.2));
}

.strength-overlay span {
  color: #fff;
  font-size: 18px;
  font-weight: var(--font-weight-bold);
  letter-spacing: 1px;
}

.strength-showcase-section {
  padding: 80px 0;
  background-color: #fff;
  position: relative;
  overflow: hidden;
}

.strength-showcase-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='20' viewBox='0 0 100 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M21.184 20c.357-.13.72-.264 1.088-.402l1.768-.661C33.64 15.347 39.647 14 50 14c10.271 0 15.362 1.222 24.629 4.928.955.383 1.869.74 2.75 1.072h6.225c-2.51-.73-5.139-1.691-8.233-2.928C65.888 13.278 60.562 12 50 12c-10.626 0-16.855 1.397-26.66 5.063l-1.767.662c-2.475.923-4.66 1.674-6.724 2.275h6.335zm0-20C13.258 2.892 8.077 4 0 4V2c5.744 0 9.951-.574 14.85-2h6.334zM77.38 0C85.239 2.966 90.502 4 100 4V2c-6.842 0-11.386-.542-16.396-2h-6.225zM0 14c8.44 0 13.718-1.21 22.272-4.402l1.768-.661C33.64 5.347 39.647 4 50 4c10.271 0 15.362 1.222 24.629 4.928C84.112 12.722 89.438 14 100 14v-2c-10.271 0-15.362-1.222-24.629-4.928C65.888 3.278 60.562 2 50 2 39.374 2 33.145 3.397 23.34 7.063l-1.767.662C13.223 10.84 8.163 12 0 12v2z' fill='%23ED7030' fill-opacity='0.04' fill-rule='evenodd'/%3E%3C/svg%3E");
  background-size: 100px 20px;
  background-position: center;
  background-repeat: repeat;
  z-index: 0;
  pointer-events: none;
}


.strength-showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.strength-showcase-card {
  display: flex;
  flex-direction: column;
  background-color: #fff;
  /* 核心修复：强制重置为 visible，防止内部场景图被裁切 */
  overflow: visible !important;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  will-change: transform;
}





.strength-showcase-content {
  padding: 30px; /* 保持足够的内边距，确保内容不溢出边框 */
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}


.strength-showcase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.strength-showcase-category {
  color: var(--primary-color);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.strength-showcase-image {
  width: 72px;
  height: 72px;
  border-radius: 12px;
  overflow: hidden;
  background-color: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04); /* 减弱内部阴影，避免与外边框冲突 */
  border: 1px solid color-mix(in srgb, var(--primary-color), transparent 0.08);
  flex-shrink: 0;
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}



.strength-showcase-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  display: block;
  transition: transform var(--transition-base);
}

.strength-showcase-card:hover .strength-showcase-image {
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary-color), transparent 0.15);
  border-color: color-mix(in srgb, var(--primary-color), transparent 0.2);
}

.strength-showcase-card:hover .strength-showcase-image img {
  transform: scale(1.15);
}

.strength-showcase-name {
  font-size: 20px;
  margin: 0 0 10px;
  font-weight: 700;
  color: var(--color-text-primary);
}

.strength-showcase-desc {
  color: var(--color-text-secondary);
  font-size: 14px;
  margin-bottom: 12px;
  line-height: 1.6;
}

.strength-showcase-scene {
  width: 100%;
  height: 160px;
  margin: 15px 0; /* 确保没有负 margin 向外溢出 */
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  background-color: var(--bg-light);
}


.strength-showcase-scene img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.strength-showcase-card:hover .strength-showcase-scene img {
  transform: scale(1.05);
}

.strength-showcase-honor {
  display: inline-block;
  margin-top: 6px;
  margin-inline-end: 6px;
  margin-bottom: 6px;
  font-weight: 600;
  font-size: 12px;
  color: var(--primary-color);
  background: color-mix(in srgb, var(--primary-color), transparent 0.06);
  border: 1px solid color-mix(in srgb, var(--primary-color), transparent 0.1);
  padding: 5px 12px;
  border-radius: 20px;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.strength-showcase-honor:hover {
  background: color-mix(in srgb, var(--primary-color), transparent 0.1);
  border-color: color-mix(in srgb, var(--primary-color), transparent 0.2);
  transform: translateY(-1px);
}

.strength-showcase-achievement {
  font-size: 13px;
  font-weight: var(--font-weight-medium);
  margin-bottom: 12px;
  color: var(--color-text-primary);
}

.strength-showcase-products {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: auto;
}

.strength-benefit {
  font-weight: 600;
  margin-bottom: 15px;
  color: var(--color-text-primary);
  font-size: 15px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.strength-benefit i {
  color: var(--primary-color);
  font-size: 14px;
}

.strength-feedback {
  color: var(--color-text-secondary);
  font-style: italic;
  font-size: 14px;
  line-height: 1.7;
  position: relative;
  padding-inline-start: 15px;
  border-inline-start: 2px solid color-mix(in srgb, var(--primary-color), transparent 0.15);
}

.strength-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid color-mix(in srgb, var(--primary-color), transparent 0.15);
}

.strength-stat-card {
  background: #fff;
  border: 1px solid color-mix(in srgb, var(--primary-color), transparent 0.08);
  border-radius: 12px;
  padding: 25px 20px;
  display: flex;
  align-items: center;
  gap: 15px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  position: relative;
  overflow: hidden;
  will-change: transform;
}

.strength-stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

.strength-stat-card:hover {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--primary-color), transparent 0.2);
}

.strength-stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  flex-shrink: 0;
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary-color), transparent 0.1), color-mix(in srgb, var(--primary-color), transparent 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.strength-stat-icon i {
  font-size: 20px;
  color: var(--primary-color);
  transition: transform var(--transition-base), color var(--transition-base);
}

.strength-stat-card:hover .strength-stat-icon {
  background: linear-gradient(135deg, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%));
  box-shadow: 0 4px 10px color-mix(in srgb, var(--primary-color), transparent 0.3);
}

.strength-stat-card:hover .strength-stat-icon i {
  color: #fff;
  transform: scale(1.1);
}

.strength-stat-content {
  display: flex;
  flex-direction: column;
}

.strength-stat-value {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.strength-stat-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.strength-showcase-products .product-tag {
  background-color: var(--bg-light);
  color: var(--color-text-secondary);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  border: 1px solid color-mix(in srgb, var(--primary-color), transparent 0.1);
  transition: all var(--transition-fast);
}

.strength-showcase-products .product-tag:hover {
  color: var(--primary-color);
  border-color: color-mix(in srgb, var(--primary-color), transparent 0.2);
  background-color: color-mix(in srgb, var(--primary-color), transparent 0.05);
  transform: translateY(-1px);
}



/* ========================================================================
   6. 合作与支持
   ======================================================================== */

/* --- 6.1 合作流程区 --- */
.process-section {
  padding: 100px 0;
  background-color: var(--bg-light);
  position: relative;
  overflow: hidden;
}

.process-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='200' height='20' viewBox='0 0 200 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 10 Q 50 0, 100 10 T 200 10 V 20 H 0 Z' fill='%23333' fill-opacity='0.008'/%3E%3C/svg%3E");
  background-size: 200px 20px;
  background-repeat: repeat-x;
  background-position: bottom;
  z-index: 0;
  pointer-events: none;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
  position: relative;
  margin-bottom: 50px;
}

.process-step {
  position: relative;
}

.step-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px 25px 30px;
  text-align: center;
  position: relative;
  overflow: hidden;
  z-index: 2;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  will-change: transform;
}

.step-card::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(to right,
      rgba(255, 255, 255, 0) 0%,
      rgba(255, 255, 255, 0.4) 50%,
      rgba(255, 255, 255, 0) 100%);
  transform: rotate(30deg);
  transition: left 0.6s ease;
  z-index: 1;
  pointer-events: none;
}

.step-card:hover {
  transform: translateY(-8px);
  border-color: color-mix(in srgb, var(--primary-color), transparent 0.15);
  box-shadow: 0 15px 35px color-mix(in srgb, var(--primary-color), transparent 0.1);
}

.step-card:hover::after {
  left: 100%;
}

.step-icon-wrapper {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  margin: 0 auto 25px;
  background: linear-gradient(135deg, color-mix(in srgb, var(--primary-color), transparent 0.1), color-mix(in srgb, var(--primary-color), transparent 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.step-icon-wrapper i {
  font-size: 28px;
  color: var(--primary-color);
  transition: transform var(--transition-base), color var(--transition-base);
}

.step-card:hover .step-icon-wrapper {
  background: linear-gradient(135deg, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%));
  box-shadow: 0 8px 20px color-mix(in srgb, var(--primary-color), transparent 0.3);
}

.step-card:hover .step-icon-wrapper i {
  color: #fff;
  transform: scale(1.1);
}

.step-badge {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 24px;
  height: 24px;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  background: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px color-mix(in srgb, var(--primary-color), transparent 0.3);
  border: 2px solid #fff;
}

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

.step-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.step-card {
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.process-step:nth-child(1) {
  transition-delay: 0s;
}

.process-step:nth-child(2) {
  transition-delay: 0.15s;
}

.process-step:nth-child(3) {
  transition-delay: 0.3s;
}

.process-step:nth-child(4) {
  transition-delay: 0.45s;
}

.step-card:hover .step-badge {
  animation: badgeBounce 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes badgeBounce {
  0% {
    transform: scale(1);
  }

  50% {
    transform: scale(1.3);
  }

  100% {
    transform: scale(1);
  }
}

@media screen and (max-width: 768px) {
  .process-step.scroll-animate {
    opacity: 0;
    transform: translateX(-30px);
  }

  .process-step.scroll-animate.visible {
    opacity: 1;
    transform: translateX(0);
  }

  .process-step:nth-child(1) {
    transition-delay: 0.1s;
  }

  .process-step:nth-child(2) {
    transition-delay: 0.25s;
  }

  .process-step:nth-child(3) {
    transition-delay: 0.4s;
  }

  .process-step:nth-child(4) {
    transition-delay: 0.55s;
  }
}

.btn-shine {
  position: relative;
  overflow: hidden;
  padding: 16px 48px;
  font-size: 17px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%));
  box-shadow: 0 8px 25px color-mix(in srgb, var(--primary-color), transparent 0.25);
  border: none;
  border-radius: 50px;
  color: #fff;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  letter-spacing: 1px;
}

.btn-shine:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 15px 35px color-mix(in srgb, var(--primary-color), transparent 0.35);
}

.btn-shine::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -75%;
  width: 30%;
  height: 200%;
  background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.4) 50%, rgba(255, 255, 255, 0) 100%);
  transform: skewX(-25deg);
  transition: left 0.75s ease;
}

.btn-shine:hover::after {
  left: 125%;
}

@keyframes subtleGlow {
  0% {
    box-shadow: 0 8px 25px color-mix(in srgb, var(--primary-color), transparent 0.25);
  }

  50% {
    box-shadow: 0 8px 35px color-mix(in srgb, var(--primary-color), transparent 0.4);
  }

  100% {
    box-shadow: 0 8px 25px color-mix(in srgb, var(--primary-color), transparent 0.25);
  }
}

.btn-shine {
  animation: subtleGlow 3s ease-in-out infinite;
}


/* ======================================================================== */
/* 6.1 FAQ 常见问题区 (优化版：品牌色智能边框) */
/* ======================================================================== */

.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px 30px;
  align-items: start;
}

/* --- FAQ 选项卡片优化 --- */
.faq-item {
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}



/* 悬停效果：增强品牌色浓度，而不是突兀变色 */
.faq-item:hover {
  /* 2. 悬停时，增加品牌色的浓度 (减少透明度)，产生"聚焦"的感觉 */
  border-color: color-mix(in srgb, var(--primary-color), transparent 0.5);
}

/* 激活状态 (展开时) 的样式 */
.faq-item.active {
  background-color: color-mix(in srgb, var(--primary-color), transparent 0.02);
}

/* --- 问题标题 --- */
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 24px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 17px;
  font-weight: 400;
  color: var(--color-text-primary);
  cursor: pointer;
  text-align: left;
  transition: color var(--transition-fast), background-color var(--transition-fast);
  line-height: 1.6;
  letter-spacing: 0.02em;
}

.faq-question:hover {
  color: var(--primary-color);
  background-color: color-mix(in srgb, var(--primary-color), transparent 0.05);
  /* 鼠标移入时增加一点极浅的背景，配合边框变化，增强立体感 */
}

.faq-item.active .faq-question {
  color: var(--primary-color);
  font-weight: 500;
  background-color: color-mix(in srgb, var(--primary-color), transparent 0.1);
  /* 激活状态的背景色也使用品牌色微调 */
}

/* --- 图标动画 --- */
.faq-icon {
  font-size: 14px;
  color: color-mix(in srgb, var(--primary-color), transparent 0.5);
  /* 图标颜色也改为品牌色的变体，而不是死板的灰色 */
  transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55), color 0.3s ease;
  margin-inline-start: 15px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--primary-color);
}

.faq-question:hover .faq-icon {
  transform: scale(1.1);
  color: var(--primary-color);
}

.faq-item.active .faq-question:hover .faq-icon {
  transform: rotate(180deg) scale(1.1);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease;
  background-color: #fafafa;
  border-top: 1px solid transparent;
}

.faq-item.active .faq-answer {
  border-top-color: #eee;
}

.faq-answer p {
  padding: 0 30px 25px;
  font-size: 15px;
  color: #555;
  line-height: 1.8;
}

.faq-answer ul {
  padding: 5px 30px 25px 50px;
  list-style-type: disc;
  font-size: 15px;
  color: #555;
  line-height: 1.8;
}

.faq-answer ul li {
  margin-bottom: 8px;
}

/* ======================================================================== */
/* 2026 视觉增强：FAQ 柔光圆形背景 (修复版：强制圆形锁定) */
/* ======================================================================== */

.faq-section {
  position: relative;
  overflow: hidden;
  background: #fff;
  padding: 120px 0;
  /* 1. 关键：为容器设置相对定位，确保子元素定位正常 */
  /* 2. 关键：设置一个合理的最小高度，防止内容塌陷 */
  min-height: 400px;
}

.faq-bg-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  /* --- 核心修复点：强制锁定宽高比为 1:1 (正方形) --- */
  aspect-ratio: 1 / 1;

  /* --- 优化点：限制最大尺寸，防止在超大屏幕上过度消耗性能 --- */
  max-width: 100vw;
  max-height: 100vh;

  /* --- 视觉优化：让画布居中，并覆盖整个区域 (类似 background-size: cover) --- */
  object-fit: cover;
  /* 虽然 Canvas 不支持此属性，但写在这里作为语义提示 */

  pointer-events: none;
  z-index: 0;
  transform: translateZ(0);
  filter: blur(2px);


}

/* ========================================================================
   7. 转化与页脚
   ======================================================================== */

/* --- 7.1 CTA报价区 --- */
.cta-section {
  padding: 100px 0;
  background: linear-gradient(180deg, #f8f9fa 0%, #f0f2f5 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -10%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(237, 112, 48, 0.12) 0%, rgba(237, 112, 48, 0.02) 50%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  animation: floatBubble 12s ease-in-out infinite;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -5%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 200, 150, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  animation: floatBubble 15s ease-in-out infinite reverse;
}

@keyframes floatBubble {
  0% {
    transform: translate(0, 0) scale(1);
  }

  50% {
    transform: translate(20px, 30px) scale(1.05);
  }

  100% {
    transform: translate(0, 0) scale(1);
  }
}

@keyframes bgPulse {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }

  100% {
    transform: scale(1.1);
    opacity: 1;
  }
}

.cta-section .section-header {
  position: relative;
  z-index: 1;
  text-align: center;
  margin-bottom: 50px;
}

.cta-section .section-title {
  color: #1a1a1a;
  font-weight: 800;
  margin-bottom: 15px;
  text-shadow: none;
}

.cta-section .section-subtitle {
  color: #666;
  font-weight: 400;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

.cta-content-wrapper {
  display: flex;
  gap: 50px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 24px;
  padding: 50px;
  box-shadow:
    0 20px 50px rgba(0, 0, 0, 0.08),
    0 0 0 1px rgba(255, 255, 255, 0.8) inset,
    0 10px 20px rgba(0, 0, 0, 0.02) inset;
  position: relative;
  z-index: 1;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  overflow: hidden;
}

.cta-content-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
      transparent 0%,
      rgba(255, 255, 255, 0.8) 50%,
      transparent 100%);
  z-index: 2;
}

.cta-phone-area {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 24px;
  padding-inline-end: 50px;
  border-inline-end: 1px solid rgba(0, 0, 0, 0.08);
  position: relative;
}

.cta-phone-icon-box {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(237, 112, 48, 0.1), rgba(237, 112, 48, 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
  transition: transform 0.3s ease;
}

.cta-phone-icon-box i {
  font-size: 28px;
  color: var(--primary-color);
}

.cta-phone-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}

.cta-phone-label {
  font-size: 11px;
  color: #999;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

.cta-phone-number {
  font-size: 28px;
  font-weight: 700;
  color: #1a1a1a;
  text-decoration: none;
  line-height: 1.2;
  letter-spacing: -0.5px;
  transition: color 0.3s ease;
}

.cta-phone-number:hover {
  color: var(--primary-color);
}

.cta-phone-time {
  font-size: 13px;
  color: #666;
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.cta-phone-time::before {
  content: '\f017';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 11px;
  color: var(--primary-color);
  opacity: 0.8;
}

@media screen and (max-width: 768px) {
  .cta-phone-area {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding-inline-end: 0;
    border-inline-end: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    padding-bottom: 25px;
  }

  .cta-phone-icon-box {
    width: 56px;
    height: 56px;
  }

  .cta-phone-icon-box i {
    font-size: 24px;
  }

  .cta-phone-number {
    font-size: 24px;
  }
}

.cta-social-area {
  flex: 1;
  position: relative;
  z-index: 2;
}

.cta-social-title {
  font-size: 18px;
  color: var(--color-text-primary);
  font-weight: 700;
  margin-bottom: 30px;
  text-align: center;
  letter-spacing: -0.5px;
  position: relative;
  display: inline-block;
  left: 50%;
  transform: translateX(-50%);
}

.cta-social-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.cta-qrcodes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.cta-qr-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

.cta-qr-img-box {
  width: 100%;
  aspect-ratio: 1;
  background: #fff;
  border-radius: 16px;
  padding: 10px;
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.04),
    0 0 0 1px rgba(255, 255, 255, 0.8) inset;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  position: relative;
  overflow: hidden;
}

.cta-qr-img-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 8px;
  transition: transform 0.5s ease;
}

.cta-qr-item span {
  font-size: 13px;
  color: #666;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: color 0.3s ease;
}

.cta-qr-item:hover .cta-qr-img-box {
  transform: translateY(-5px);
  border-color: color-mix(in srgb, var(--primary-color), transparent 0.3);
  box-shadow:
    0 12px 25px color-mix(in srgb, var(--primary-color), transparent 0.1),
    0 0 0 1px rgba(255, 255, 255, 0.9) inset;
}

.cta-qr-item:hover .cta-qr-img-box img {
  transform: scale(1.05);
}

.cta-qr-item:hover span {
  color: var(--primary-color);
}

@media screen and (max-width: 768px) {
  .cta-qrcodes-grid {
    gap: 15px;
  }

  .cta-qr-img-box {
    padding: 8px;
    border-radius: 12px;
  }

  .cta-qr-item span {
    font-size: 12px;
  }
}


/* --- 7.2 页脚 --- */
.footer {
  background-color: #121212;
  color: #bbb;
  padding: 60px 0 20px;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='100' height='20' viewBox='0 0 100 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M21.184 20c.357-.13.72-.264 1.088-.402l1.768-.661C33.64 15.347 39.647 14 50 14c10.271 0 15.362 1.222 24.629 4.928.955.383 1.869.74 2.75 1.072h6.225c-2.51-.73-5.139-1.691-8.233-2.928C65.888 13.278 60.562 12 50 12c-10.626 0-16.855 1.397-26.66 5.063l-1.767.662c-2.475.923-4.66 1.674-6.724 2.275h6.335zm0-20C13.258 2.892 8.077 4 0 4V2c5.744 0 9.951-.574 14.85-2h6.334zM77.38 0C85.239 2.966 90.502 4 100 4V2c-6.842 0-11.386-.542-16.396-2h-6.225zM0 14c8.44 0 13.718-1.21 22.272-4.402l1.768-.661C33.64 5.347 39.647 4 50 4c10.271 0 15.362 1.222 24.629 4.928C84.112 12.722 89.438 14 100 14v-2c-10.271 0-15.362-1.222-24.629-4.928C65.888 3.278 60.562 2 50 2C39.374 2 33.145 3.397 23.34 7.063l-1.767.662C13.223 10.84 8.163 12 0 12v2z' fill='%23ffffff' fill-opacity='0.02' fill-rule='evenodd'/%3E%3C/svg%3E");
  background-size: 100px 20px;
  z-index: 0;
  pointer-events: none;
}

.footer::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--primary-color) 50%, transparent 100%);
  opacity: 0.4;
  z-index: 2;
  box-shadow: 0 0 10px var(--primary-color);
}

.footer-bottom::before {
  content: '';
  position: absolute;
  bottom: -50%;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(237, 112, 48, 0.05) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
}

.footer-cta-btn,
.footer-icon-sm {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
  transition: all var(--transition-base);
}

.footer-cta-btn:hover {
  background-color: color-mix(in srgb, var(--primary-color), black 15%);
  border-color: color-mix(in srgb, var(--primary-color), black 15%);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary-color), transparent 0.3);
}

.footer-grid {
  display: grid;
  /* 核心优化：品牌区给更多空间，联系方式给更多空间，中间三列自适应 */
  grid-template-columns: 1.8fr 1fr 1fr 1fr 1.6fr;
  gap: 0;
  margin-bottom: 40px;
  align-items: flex-start;
}

.footer-grid>div {
  padding-inline: 15px;
  /* 增加列间距呼吸感 */
}

.footer-grid>div:first-child {
  padding-inline-start: 0;
  padding-inline-end: 30px;
}

.footer-grid>div:last-child {
  padding-inline-end: 20px;
}


.footer-title {
  color: #fff;
  margin-bottom: 25px;
  font-size: 18px;
  position: relative;
  padding-bottom: 10px;
  font-weight: 700;
}

.footer-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 35px;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 2px;
}

.footer-brand p {
  margin-bottom: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: #999;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 20px;
}

.footer-logo {
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.footer-logo .logo-icon {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.footer-logo .logo-brand {
  font-size: 20px;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.footer-slogan {
  color: var(--primary-color);
  font-size: 14px;
  margin-bottom: 4px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-align: center;
}

.footer-desc {
  font-size: 13px;
  line-height: 1.6;
  color: #aaa;
  margin-bottom: 20px;
  max-width: 90%;
  text-align: center;
}

.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 6px;
  margin-top: 6px;
  justify-content: center;
  width: 100%;
  max-width: 280px;
}

.badge-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  color: #bbb;
  transition: all 0.3s ease;
  cursor: default;
  width: calc(33.333% - 5.33px);
}

.badge-text {
  font-size: 11px;
  letter-spacing: 0.5px;
  color: #999;
  transition: color 0.3s ease;
  white-space: nowrap;
  font-weight: 500;
}

.footer-contact-list li:hover .footer-icon-sm,
.badge-item:hover .badge-icon-box {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  box-shadow: 0 4px 15px color-mix(in srgb, var(--primary-color), transparent 0.4);
  transform: translateY(-3px) scale(1.05);
  color: #fff;
}

.badge-item:hover .badge-text {
  color: var(--primary-color);
}

.footer-icon-sm,
.badge-icon-box {
  color: var(--primary-color);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid rgba(237, 112, 48, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(237, 112, 48, 0.05);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  flex-shrink: 0;
}

.footer-contact-list {
  list-style: none;
  margin-top: 15px;
  margin-bottom: 15px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 15px;
}

.footer-contact-list li:last-child {
  grid-column: 1 / -1;
}

.footer-contact-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 13px;
  color: #999;
  line-height: 1.5;
  transition: color var(--transition-fast);
  font-variant-east-asian: tabular-nums;
  /* 优化中文字符对齐 */
}

.footer-contact-list li span:not(.footer-icon-sm) {
  color: #999;
  transition: color 0.3s ease;
  flex: 1;
}

.footer-contact-list li:hover .footer-icon-sm+span {
  color: var(--primary-color);
}

.footer-contact-link {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #999;
  text-decoration: none;
  transition: color 0.3s ease;
}

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


.footer-links ul {
  list-style: none;
}

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

.footer-links a {
  color: #d0d0d0;
  font-size: 14px;
  transition: color var(--transition-fast), padding-inline-start var(--transition-fast);
  display: inline-block;
}

.footer-links a:hover {
  color: var(--primary-color);
  padding-inline-start: 5px;
}

/* 页脚电话按钮：复用全局样式，仅做排版微调 */
.footer-cta-btn {
  /* 核心：改为 inline-flex，让宽度刚好包裹住号码，不再撑满整行 */
  display: inline-flex !important;
  align-items: center !important;
  /* 图标与文字垂直居中 */

  /* 移动端防换行与触控保障 */
  white-space: nowrap;
  /* 防止号码在极窄屏幕下意外折行 */
  min-height: 44px;
  /* 保证手指点击的舒适度 */
}

/* 电话图标与号码的间距 */
.footer-cta-btn i {
  margin-right: 8px;
}

.footer-sub-text {
  font-size: 12px;
  color: #666;
  margin-bottom: 20px;
}


/* --- 7.3 页脚底部与合规信息区 --- */
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 30px;
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  text-align: center;
}

.footer-legal,
.footer-compliance {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 16px;
}

.footer-divider,
.beian-divider {
  color: rgba(255, 255, 255, 0.15);
  user-select: none;
  margin: 0 2px;
  font-weight: 300;
}

.footer-copyright {
  display: flex;
  align-items: center;
  gap: 6px;
}

.beian-container {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 12px;
  font-size: 13px;
  color: inherit;
}

/* --- 修复版：页脚备案链接样式 --- */
.beian-container .filing-link {
  /* 1. 核心修复：将 position: relative 提前，确保定位上下文有效 */
  position: relative;
  color: var(--filing-color-default);
  text-decoration: none;

  /* 2. 布局：保持原有的 Flex 布局 */
  display: inline-flex;
  align-items: center;
  gap: 6px;

  /* 3. 过渡效果 */
  transition: color 0.3s ease;
}

/* --- 修复版：备案链接下划线动画 --- */
.beian-container .filing-link::after {
  content: '';
  position: absolute;
  /* 4. 核心修复：定位到底部左侧 */
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--filing-underline-color);

  /* 5. 核心修复：修正变换原点为左侧，实现从左向右的展开 */
  transform: scaleX(0);
  transform-origin: left;

  /* 6. 过渡动画 */
  transition: transform var(--filing-transition-speed) var(--filing-transition-easing);
}

/* --- 悬停状态：展开下划线 --- */
.beian-container .filing-link:hover::after {
  transform: scaleX(1);
}

.footer-filing {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-filing a {
  color: var(--filing-color-default);
  transition: color var(--transition-fast);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.footer-filing a:hover {
  color: var(--filing-color-hover);
}

.footer-filing .filing-icon {
  height: 16px;
  width: auto;
  vertical-align: middle;
}


/* ========================================================================
   8. 弹窗与水印组件
   ======================================================================== */

.image-viewer-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.9);
  z-index: 3000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  cursor: pointer;
}

.image-viewer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.image-viewer-content {
  position: relative;
  max-width: 90%;
  max-height: 90%;
  cursor: default;
}

.image-viewer-content img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  object-fit: contain;
}

.image-viewer-title {
  text-align: center;
  color: #fff;
  font-size: 18px;
  margin-top: 15px;
  letter-spacing: 1px;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 2000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background-color: #fff;
  width: 90%;
  max-width: 900px;
  max-height: 85vh;
  overflow-y: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  position: relative;
  transform: translateY(-20px);
  transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 20px;
  background: rgba(0, 0, 0, 0.05);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 20px;
  color: #666;
  cursor: pointer;
  z-index: 10;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  display: flex;
  justify-content: center;
  align-items: center;
}

.modal-close:hover {
  background: var(--primary-color);
  color: #fff;
  transform: rotate(90deg);
}

.modal-body {
  display: flex;
  gap: 30px;
  padding: 40px;
}

.modal-gallery {
  flex: 1.2;
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.modal-main-image {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--bg-light);
  position: relative;
}

.modal-main-image img {
  width: 100%;
  height: auto;
  display: block;
  position: relative;
}

.modal-scene-images {
  display: flex;
  gap: 15px;
  position: relative;
}

.modal-scene-images img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.modal-info {
  flex: 0.8;
  padding-top: 10px;
}

.modal-product-name {
  font-size: 24px;
  margin-bottom: 10px;
  color: var(--color-text-primary);
}

.modal-product-advantage {
  color: var(--primary-color);
  font-size: 16px;
  margin-bottom: 25px;
}

.modal-specs h3 {
  font-size: 18px;
  margin-bottom: 15px;
  padding-bottom: 10px;
  border-bottom: 1px solid #eee;
}

.modal-specs-list {
  font-size: 15px;
  color: #555;
  line-height: 1.8;
}

.modal-specs-list .spec-label {
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-inline-end: 8px;
}

.modal-cta {
  margin-top: 40px;
}

.modal-content--policy {
  max-width: 700px;
}

.modal-body--policy {
  flex-direction: column;
  gap: 20px;
  padding: 40px;
}

.nav-modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 4000;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.nav-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.nav-modal-content {
  background-color: #fff;
  width: 90%;
  max-width: 400px;
  border-radius: var(--radius-lg);
  padding: 30px;
  text-align: center;
  position: relative;
  transform: translateY(-20px);
  transition: transform 0.3s ease;
}

.nav-modal-overlay.active .nav-modal-content {
  transform: translateY(0);
}

.nav-modal-title {
  font-size: 20px;
  margin-bottom: 5px;
  color: var(--color-text-primary);
}

.nav-modal-subtitle {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 25px;
}

.nav-options {
  display: flex;
  gap: 15px;
}

.nav-option-card {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px;
  border: 1px solid #eee;
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text-primary);
  transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
}

.nav-option-card:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
  background-color: #fff5f0;
}

.product-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='150'%3E%3Ctext x='50%25' y='50%25' dominant-baseline='middle' text-anchor='middle' font-size='16' font-family='sans-serif' font-weight='bold' fill='rgba(255,255,255,0.15)' transform='rotate(-30, 100, 75)'%3E车姐食品%3C/text%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 150px;
  z-index: 2;
  pointer-events: none;
}

.product-image::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: linear-gradient(to top, rgba(255, 255, 255, 0.8), transparent);
  z-index: 3;
  pointer-events: none;
}

.modal-main-image::after,
.modal-scene-images::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='150'%3E%3Ctext x='50%25' y='50%25' dominant-baseline='middle' text-anchor='middle' font-size='16' font-family='sans-serif' font-weight='bold' fill='rgba(0,0,0,0.08)' transform='rotate(-30, 100, 75)'%3E车姐食品%3C/text%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px 150px;
}


/* ========================================================================
   9. 动画与浮动组件 (通用工具)
   ======================================================================== */

/* 滚动出现动画工具类 */
.scroll-animate {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-animate.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 导航栏兼容性处理 */
@supports not (backdrop-filter: blur(16px)) {
  .navbar {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }
}



/* ========================================================================
   10. 响应式媒体查询
   ======================================================================== */

@media screen and (max-width: 992px) {

  .value-grid,
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .strength-showcase-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-links,
  .footer-contact,
  .footer-certs,
  .footer-map,
  .footer-brand {
    max-width: none;
  }

  .about-content {
    flex-direction: column;
    gap: 40px;
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }

  .step-connector {
    top: -15px;
    left: 45px;
    right: 45px;
    width: 2px;
    height: auto;
    bottom: -25px;
  }

  .process-step:nth-child(odd) .step-connector {
    left: auto;
    right: -12px;
  }

  .process-step:nth-child(even) .step-connector {
    right: auto;
    left: -12px;
  }

  .brands-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (max-width: 768px) {
  :root {
    --nav-height: 60px;
    --btn-padding-sm: 8px 18px;
    --btn-padding-md: 14px 28px;
    /* 移动端增加上下内边距，扩大触控区 */
    --btn-padding-lg: 16px 32px;
    --btn-font-size-sm: 14px;
    --btn-font-size-md: 15px;
    /* 移动端字号微调 */
    --btn-font-size-lg: 16px;
  }

  .section-title {
    font-size: 24px;
  }

  body {
    padding-top: var(--nav-height);
  }

  .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: #fff;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    padding: 0;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease, visibility 0s linear 0.4s;
    z-index: 999;
  }

  .nav-links.active {
    max-height: 500px;
    opacity: 1;
    visibility: visible;
    padding: 20px;
    gap: 15px;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease, visibility 0s linear 0s;
    z-index: 999;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
  }

  .nav-link {
    text-decoration: none;
    color: #333;
    font-size: 15px;
    position: relative;
    transition: all var(--transition-fast);
    padding: 10px 15px;
    display: block;
    margin: 5px 0;
    border-radius: var(--radius-sm);
  }

  .nav-link:hover {
    color: var(--primary-color);
    background-color: color-mix(in srgb, var(--primary-color), transparent 0.1);
  }

  .nav-link.active {
    color: var(--primary-color);
    font-weight: 600;
    background-color: color-mix(in srgb, var(--primary-color), transparent 0.15);
  }

  .navbar.nav-at-top .nav-links.active {
    max-height: 500px;
    opacity: 1;
    visibility: visible;
    padding: 20px;
    gap: 15px;
    background-color: rgba(255, 255, 255, 0.95);
    transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease, visibility 0s linear 0s;
  }

  .navbar.nav-at-top .nav-link {
    color: #333;
  }

  .navbar.nav-at-top .nav-link:hover {
    color: var(--primary-color);
    background-color: color-mix(in srgb, var(--primary-color), transparent 0.1);
  }

  .navbar.nav-at-top .nav-link.active {
    color: var(--primary-color);
    background-color: color-mix(in srgb, var(--primary-color), transparent 0.15);
    font-weight: 600;
  }

  .nav-cta,
  .lang-switcher {
    display: none;
  }

  .nav-mobile {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
  }

  .logo-brand {
    font-size: 16px;
  }

  .logo-slogan {
    font-size: 10px;
    letter-spacing: 0.1em;
  }

  .logo-text-right {
    gap: 0;
    line-height: 1.2;
  }

  .hero-section {
    min-height: auto;
    /* 移除固定高度，让内容撑开 */
    max-height: none;
    padding: 120px 0 60px;
    /* 增加上下内边距，确保不被导航栏遮挡，底部留白 */
  }


  .hero-title {
    font-size: 28px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

  .hero-points {
    flex-direction: column;
    gap: 10px;
  }

  .hero-point-divider {
    display: none;
  }

  .hero-buttons {
    flex-direction: column;
    /* 垂直排列 */
    align-items: center;
    /* 水平居中 */
    gap: 15px;
  }

  .hero-buttons .btn-primary,
  .hero-buttons .btn-secondary {
    width: auto;
    /* 宽度由内容和 padding 撑开 */
    max-width: 280px;
    /* 限制最大宽度，避免在平板上显得过长 */
    padding-left: 32px;
    padding-right: 32px;
  }




  .value-grid,
  .cases-grid,
  .products-grid {
    grid-template-columns: 1fr;
    /* 统一单列布局 */
    gap: 20px;
    /* 缩小间距，适应滚动阅读 */
  }

  .products-grid {
    max-width: 400px;
    margin: 0 auto;
  }


  .value-grid .value-card {
    padding: 30px 20px;
  }


  .category-tabs {
    flex-wrap: wrap;
    justify-content: center;
  }

  body.loading .category-tabs-container,
  body.loading .tabs-slider {
    opacity: 0;
    transition: none;
  }

  body:not(.loading) .category-tabs-container,
  body:not(.loading) .tabs-slider {
    opacity: 1;
    transition: opacity 0.3s ease;
  }

  .tabs-slider {
    display: none;
  }

  .category-tab.active {
    background-color: var(--primary-color);
    color: #fff;
  }

  .about-content {
    flex-direction: column;
  }

  .about-stats {
    grid-template-columns: 1fr;
    /* 统计数据单列排布 */
    justify-content: center;
  }


  .about-title {
    font-size: 26px;
  }

  .about-bg-text {
    font-size: 100px;
  }

  .strength-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .strength-showcase-grid {
    grid-template-columns: 1fr;
  }

  .strength-showcase-scene {
    height: 200px;
    /* 增加场景图高度，单列时提供更好的视觉冲击 */
  }


  .strength-stats {
    grid-template-columns: 1fr;
  }

  .process-steps {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .step-card {
    text-align: left;
    padding: 25px 20px 25px 30px;
    border-left: 3px solid var(--primary-color);
    display: flex;
    flex-direction: column;
    gap: 5px;
    position: relative;
    /* 确保徽章定位正确 */
  }

  .step-icon-wrapper {
    margin: 0 0 10px 0;
    width: 50px;
    height: 50px;
  }


  .step-icon-wrapper i {
    font-size: 22px;
  }

  .step-badge {
    top: -4px;
    right: -4px;
    width: 20px;
    height: 20px;
    font-size: 10px;
  }

  .step-title {
    font-size: 18px;
  }

  .btn-shine,
  .btn-primary,
  .nav-cta-mobile {
    padding: var(--btn-padding-md);
    /* 使用响应式变量 */
    animation: none;
    /* 移动端关闭复杂动画，提升性能 */
    transform: perspective(500px) translateZ(0);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    width: auto;
    /* 允许自适应 */
    max-width: 90%;
    /* 最大不超过屏幕 90% */
    display: inline-flex;
    /* 确保居中生效 */
  }


  .btn-shine:active,
  .btn-primary:active,
  .nav-cta-mobile:active {
    transform: perspective(500px) translateZ(-5px) scale(0.98);
    box-shadow: 0 2px 8px color-mix(in srgb, var(--primary-color), transparent 0.3) !important;
  }

  .btn-shine:hover,
  .btn-primary:hover {
    transform: perspective(500px) translateZ(0);
    box-shadow: 0 8px 25px color-mix(in srgb, var(--primary-color), transparent 0.25);
  }

  .btn-shine:hover::after {
    display: none;
  }

  .step-connector {
    top: -20px;
    left: 50%;
    right: auto;
    width: 2px;
    height: 20px;
    transform: translateX(-50%);
    bottom: auto;
  }

  .step-connector::after {
    display: none;
  }

  .faq-section {
    padding: 60px 0;
  }

  .faq-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .faq-question {
    padding: 16px;
    font-size: 15px;
  }

  .faq-answer p {
    padding: 0 16px 16px;
    font-size: 14px;
    line-height: 1.7;
  }

  .faq-item.active {
    background-color: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  }

  .cta-content-wrapper {
    flex-direction: column;
    align-items: center;
    padding: 40px 25px;
  }

  .cta-phone-area {
    flex-direction: column;
    align-items: center;
    gap: 16px;
    width: 100%;
    padding-inline-end: 0;
    padding-bottom: 30px;
    border-inline-end: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    text-align: center;
  }

  .cta-phone-info {
    align-items: center;
    width: 100%;
  }

  .cta-phone-icon-box {
    width: 56px;
    height: 56px;
  }

  .cta-phone-icon-box i {
    font-size: 24px;
  }

  .cta-phone-number {
    font-size: 24px;
    letter-spacing: 0;
  }

  .cta-social-area {
    width: 100%;
    text-align: center;
  }

  .cta-social-title {
    left: 0;
    transform: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
    gap: 40px;
  }

  .footer-links,
  .footer-contact,
  .footer-certs,
  .footer-map,
  .footer-brand {
    max-width: none;
    /* 核心修复：移除宽度限制 */
    width: 100%;
    text-align: center;
  }



  .footer-title {
    color: #fff;
    margin-bottom: 25px;
    font-size: 18px;
    position: relative;
    padding-bottom: 10px;
    font-weight: 700;
    text-align: center;
    /* 确保标题居中 */
  }

  .footer-title::after {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    /* 下划线居中 */
    width: 35px;
    height: 3px;
    background-color: var(--primary-color);
    border-radius: 2px;
  }



  .trust-badges {
    display: grid;
    grid-template-columns: repeat(3, 0.8fr);
    /* 核心修复：让每列宽度缩小到 0.8fr */
    gap: 3px;
    /* 核心修复：横向间距缩小到 3px */
    margin-top: 6px;
    justify-content: center;
    width: 100%;
    box-sizing: border-box;
  }



  .badge-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: #bbb;
    transition: all 0.3s ease;
    cursor: default;
    width: 100%;
    /* 核心修复：强制内容宽度与网格单元一致 */
    padding: 0;
  }





  /* === 优化版：联系方式列表居中对齐 === */
  .footer-contact-list {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    gap: 12px;
    padding: 0 20px;
    width: 100%;
  }

  /* === 优化版：联系方式列表项：保持图标与文字同行，居中对齐 === */
  .footer-contact-list li,
  .footer-contact-list a {
    display: inline-flex !important;
    /* 核心修复：行内弹性盒子，宽度由内容决定 */
    align-items: center !important;
    justify-content: center !important;
    width: auto !important;
    white-space: nowrap !important;
    /* 核心修复：防止电话号码换行 */
    gap: 10px;
    text-align: center;
  }

  .footer-contact-list li:hover .footer-icon-sm {
    color: var(--primary-color);
    background-color: transparent;
    border-color: var(--primary-color);
  }


  .footer-links a:hover {
    padding-inline-start: 0;
  }

  .stats-bar,
  .brands-stats {
    gap: 30px;
  }

  .stats-bar {
    grid-template-columns: 1fr;
    gap: 15px;
    padding: 30px 0;
  }

  .stat-item {
    padding: 25px 15px;
  }

  .stat-value {
    font-size: 28px;
  }

  .stat-unit {
    font-size: 16px;
  }

  .modal-body {
    flex-direction: column;
    padding: 25px;
  }

  .modal-close {
    top: 10px;
    right: 15px;
    font-size: 28px;
  }

  .modal-scene-images {
    display: none;
  }

  .footer-contact-link {
    justify-content: center;
  }

  .footer-bottom {
    gap: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    /* 主轴居中 */
    text-align: center;
    /* 内部文字居中 */
  }

  .footer-compliance {
    flex-direction: column;
    /* 核心修复：垂直堆叠 */
    gap: 8px;
    text-align: center;
    align-items: center;
  }

  .footer-compliance .beian-divider {
    display: none;
    /* 核心降噪：隐藏竖线分隔符 */
  }



  /* === 优化版：页脚电话按钮：确保自适应宽度且居中 === */
  .footer-cta-btn {
    display: inline-flex !important;
    align-items: center !important;
    width: auto !important;
    /* 核心修复：宽度由内容决定 */
    white-space: nowrap;
    justify-content: center;
    margin: 0 auto;
    /* 核心修复：在父容器中水平居中 */
  }

  .footer-cta-btn i {
    margin-right: 8px;
  }


  /* 浮动客服按钮移动端强制样式覆盖 */
  .floating-customer-service-wrapper {
    position: fixed !important;
    /* 强制固定定位 */
    right: 16px !important;
    bottom: 16px !important;
    z-index: 1000 !important;
  }

  .floating-customer-service {
    width: 36px !important;
    height: 36px !important;
    font-size: 18px !important;
  }

  .cs-bubble {
    display: none !important;
  }

}

@media screen and (max-width: 480px) {
  .process-steps {
    flex-direction: column;
  }

  .stat-value,
  .brands-stat-value {
    font-size: 28px;
  }

  .about-stat-item .stat-value {
    font-size: 24px;
  }

  .strength-grid {
    grid-template-columns: 1fr;
  }

  .hero-section {
    min-height: 400px;
  }

  .hero-title {
    font-size: 24px;
  }

  .logo-slogan {
    display: none;
  }

  .step-icon-wrapper {
    width: 40px;
    height: 40px;
  }

  .step-icon-wrapper i {
    font-size: 18px;
  }

  .step-card {
    padding: 20px 15px 20px 25px;
  }
}

/* ========================================================================
   11. 浮动客服按钮优化 (强制重置与隔离)
   ======================================================================== */

/* 
   容器重置 
   使用 flex 布局是为了让按钮和气泡横向排列，但必须强制容器本身不占据空间
*/
.floating-customer-service-wrapper {
  position: fixed !important;
  /* 强制固定定位，脱离文档流 */
  /* 使用 safe-area-inset 适配刘海屏/圆角，增加 16px 的额外呼吸感 */
  right: calc(env(safe-area-inset-right, 20px) + 16px) !important;
  bottom: calc(env(safe-area-inset-bottom, 20px) + 16px) !important;
  z-index: 9999 !important;
  /* 提升层级，确保在最上层 */
  display: flex !important;
  align-items: flex-end !important;
  gap: 12px !important;
  pointer-events: none !important;
  /* 容器本身不响应鼠标，只让子元素响应 */
  background: transparent !important;
  /* 强制背景透明，消除白色背景 */
  border: none !important;
  /* 强制无边框 */
  padding: 0 !important;
  /* 强制无内边距 */
  margin: 0 !important;
  /* 强制无外边距 */
  width: auto !important;
  /* 宽度自适应 */
  height: auto !important;
  /* 高度自适应 */
  box-shadow: none !important;
  /* 强制无阴影 */
}

/* 
   主按钮重置 
   确保按钮本身拥有正确的尺寸、颜色和交互效果
*/
.floating-customer-service {
  position: relative !important;
  width: 36px !important;
  /* 强制宽度 36px */
  height: 36px !important;
  /* 强制高度 36px */
  background: linear-gradient(135deg, var(--primary-color), color-mix(in srgb, var(--primary-color), black 15%)) !important;
  /* 强制品牌渐变色 */
  color: #fff !important;
  /* 强制文字白色 */
  border-radius: 50% !important;
  /* 强制圆形 */
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  font-size: 18px !important;
  /* 强制图标大小 */
  box-shadow: 0 4px 15px rgba(237, 112, 48, 0.3) !important;
  /* 强制阴影 */
  pointer-events: auto !important;
  /* 恢复按钮的点击事件 */
  cursor: pointer !important;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
  text-decoration: none !important;
  overflow: hidden !important;
  border: none !important;
  /* 强制无边框 */
}

/* 呼吸光晕动画 */
.floating-customer-service::after {
  content: '';
  position: absolute !important;
  inset: -3px !important;
  border-radius: 50% !important;
  background: inherit !important;
  opacity: 0.4;
  z-index: -1 !important;
  filter: blur(4px);
  animation: customerServicePulse 3s infinite ease-in-out;
}

/* 悬停状态 */
.floating-customer-service:hover {
  transform: translateY(-3px) scale(1.15) rotate(5deg) !important;
  /* 强制悬停动画 */
  box-shadow: 0 8px 25px rgba(237, 112, 48, 0.4) !important;
}

/* 悬停时的摇晃动画 */
.floating-customer-service:hover i {
  animation: customerServiceShake 0.5s ease-in-out infinite;
}

/* 点击状态 */
.floating-customer-service:active {
  transform: translateY(-1px) scale(0.95) !important;
  /* 强制点击动画 */
  box-shadow: 0 2px 8px rgba(237, 112, 48, 0.2) !important;
}

/* 
   引导气泡重置 
   确保气泡样式独立，不受其他元素影响
*/
.cs-bubble {
  position: absolute !important;
  right: 48px !important;
  /* 强制位于按钮左侧 */
  bottom: 6px !important;
  background: #fff !important;
  /* 强制白色背景 */
  color: var(--color-text-primary) !important;
  padding: 6px 12px !important;
  border-radius: 50px !important;
  font-size: 11px !important;
  font-weight: 600 !important;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08) !important;
  white-space: nowrap !important;
  pointer-events: auto !important;
  opacity: 0;
  transform: translateX(8px);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) !important;
  display: flex !important;
  align-items: center !important;
  gap: 4px !important;
  border: none !important;
}

/* 气泡的小三角 */
.cs-bubble::after {
  content: '';
  position: absolute !important;
  right: -5px !important;
  bottom: 10px !important;
  width: 0 !important;
  height: 0 !important;
  border-top: 5px solid transparent !important;
  border-bottom: 5px solid transparent !important;
  border-left: 5px solid #fff !important;
}

/* 页面加载后延迟显示气泡 */
.floating-customer-service-wrapper.loaded .cs-bubble {
  opacity: 1;
  transform: translateX(0);
  animation: bubblePopIn 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
  animation-delay: 1.5s;
}

/* 悬停按钮时，气泡保持显示 */
.floating-customer-service:hover+.cs-bubble,
.cs-bubble:hover {
  opacity: 1;
  transform: translateX(0);
}

/* 动画定义 */
@keyframes customerServicePulse {
  0% {
    transform: scale(1);
    opacity: 0.4;
  }

  50% {
    transform: scale(1.2);
    opacity: 0.2;
  }

  100% {
    transform: scale(1);
    opacity: 0.4;
  }
}

@keyframes customerServiceShake {

  0%,
  100% {
    transform: rotate(0deg);
  }

  25% {
    transform: rotate(-10deg);
  }

  75% {
    transform: rotate(10deg);
  }
}

@keyframes bubblePopIn {
  0% {
    opacity: 0;
    transform: translateX(8px) scale(0.8);
  }

  100% {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

/* 
   移动端适配 
   在移动端强制隐藏气泡，并调整按钮位置
*/
@media screen and (max-width: 768px) {
  .floating-customer-service-wrapper {
    right: 16px !important;
    bottom: 16px !important;
  }

  .floating-customer-service {
    width: 36px !important;
    height: 36px !important;
    font-size: 18px !important;
  }

  .cs-bubble {
    display: none !important;
  }
}




/* ========================================================================
   12. 404 错误页面专用样式
   ======================================================================== */

/* 
   404 页面导航栏强制可见优化 
   强制移除 .nav-at-top 类的透明效果，直接应用 .nav-visible 的毛玻璃效果。
   注意：这里使用 body.error-page 作为限定符，避免影响主站。
*/
body.error-page:not(.loading) .navbar {
  background: rgba(255, 255, 255, 0.85) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.07) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.4) !important;
  transform: translateY(0) !important;
}

/* 强制应用深色文字样式，覆盖 .nav-at-top 下的白色文字 */
body.error-page:not(.loading) .navbar .logo-brand,
body.error-page:not(.loading) .navbar .nav-link,
body.error-page:not(.loading) .navbar .lang-link,
body.error-page:not(.loading) .navbar .lang-divider,
body.error-page:not(.loading) .navbar .nav-toggle {
  color: var(--color-text-primary) !important;
}

/* 强制应用深色 Logo Slogan */
body.error-page:not(.loading) .navbar .logo-slogan {
  color: #999 !important;
}

/* 强制应用 CTA 按钮的深色背景样式 */
body.error-page:not(.loading) .navbar .nav-cta {
  background-color: var(--primary-color) !important;
  color: #fff !important;
  border: none !important;
  box-shadow: 0 4px 12px color-mix(in srgb, var(--primary-color), transparent 0.3) !important;
}

body.error-page:not(.loading) .navbar .nav-cta:hover {
  background-color: color-mix(in srgb, var(--primary-color), black 15%) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 6px 15px color-mix(in srgb, var(--primary-color), transparent 0.4) !important;
}

/* 移动端 CTA 按钮样式 */
body.error-page:not(.loading) .navbar .nav-cta-mobile {
  background-color: var(--primary-color) !important;
  color: #fff !important;
  border: none !important;
}

/* 404 内容区布局与样式 */
.error-container {
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  background-color: #fafafa;
  position: relative;
  overflow: hidden;
}

.error-container::before {
  content: '404';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 200px;
  font-weight: 900;
  color: rgba(0, 0, 0, 0.02);
  pointer-events: none;
  font-family: var(--font-heading);
  z-index: 0;
}

.error-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.error-code {
  font-size: 120px;
  font-weight: 900;
  line-height: 1;
  color: var(--primary-color);
  margin-bottom: 20px;
  font-family: var(--font-heading);
  letter-spacing: -5px;
  text-shadow: 0 10px 30px rgba(237, 112, 48, 0.2);
}

.error-title {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 15px;
  font-family: var(--font-heading);
}

.error-desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}

.error-actions {
  display: flex;
  gap: 15px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

/* GEO优化：搜索与导航区块 */
.error-rescue-zone {
  background: #fff;
  border-radius: 16px;
  padding: 30px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
  border: 1px solid #f0f0f0;
  text-align: left;
}

.rescue-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.rescue-title i {
  color: var(--primary-color);
}

.search-box {
  display: flex;
  gap: 10px;
  margin-bottom: 25px;
}

.search-input {
  flex: 1;
  padding: 12px 20px;
  border: 1px solid #eee;
  border-radius: 50px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.3s;
}

.search-input:focus {
  border-color: var(--primary-color);
}

.search-btn {
  background: var(--primary-color);
  color: #fff;
  border: none;
  border-radius: 50px;
  padding: 0 25px;
  cursor: pointer;
  transition: background 0.3s;
}

.search-btn:hover {
  background: color-mix(in srgb, var(--primary-color), black 15%);
}

.quick-nav-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.quick-nav-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px;
  background: var(--bg-light);
  border-radius: 8px;
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: 600;
  font-size: 14px;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

.quick-nav-card:hover {
  background: #fff;
  border-color: rgba(237, 112, 48, 0.2);
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(237, 112, 48, 0.1);
  color: var(--primary-color);
}

.quick-nav-icon {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: rgba(237, 112, 48, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
  flex-shrink: 0;
}

/* 404 页面响应式适配 */
@media screen and (max-width: 768px) {
  .error-code {
    font-size: 80px;
  }

  .error-title {
    font-size: 22px;
  }

  .error-actions {
    flex-direction: column;
  }

  .error-actions a {
    width: 100%;
  }

  .quick-nav-grid {
    grid-template-columns: 1fr;
  }

  .search-box {
    flex-direction: column;
  }

  .search-btn {
    padding: 12px;
  }
}