/**
 * ==========================================================================
 * 标题：高端大气配色方案
 * 文件名：premium-color-scheme.css
 * 文件类型：CSS样式文件
 * 文件大小：约15KB
 * 功能：定义企业网站的CSS变量系统和自定义组件样式
 * 应用场景：广州芯思技术有限公司企业官网
 * 技术栈：CSS3 + Bootstrap 5
 * 公司：广州芯思技术有限公司
 * 作者：广州芯思技术有限公司
 * 网址：thinksi.cn
 * 邮箱：kf@thinksi.cn
 * 创建日期：2025-09-16 10:00:00
 * 修改日期：2026-02-26 17:00:00
 * API网关：v3
 * 版本：V6.0.0
 * 说明：本文件仅包含CSS变量定义和自定义组件样式，基础排版由Bootstrap处理
 * ==========================================================================
 */

/*  CSS变量系统  */
:root {
  /* 主色调 - 深红紫系（高端、大气，科技感） */
  --primary-color: #C80036;
  --primary-light: #E6004D;
  --primary-dark: #8B0026;

  /* 辅助色调 - 高端黑金灰系 */
  --secondary-color: #0A0F1C;
  --accent-color: #1A2332;

  /* 强调色调 */
  --highlight-color: #C80036;
  --accent-secondary: #2C3E50;

  /* 背景色调 */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F9FA;
  --bg-tertiary: #E9ECEF;
  --bg-dark: #0D1117;
  --bg-gradient: linear-gradient(135deg, #0D1117 0%, #161B22 50%, #21262D 100%);

  /* 文字色调 */
  --text-primary: #444444;
  --text-secondary: #555555;
  --text-muted: #888888;
  --text-light: #aaaaaa;
  --text-white: #FFFFFF;

  /* 边框色调 */
  --border-color: #E9ECEF;
  --border-dark: #30363D;
  --border-primary: rgba(200, 0, 54, 0.12);

  /* 阴影色调 */
  --shadow-light: rgba(13, 17, 23, 0.06);
  --shadow-medium: rgba(13, 17, 23, 0.12);
  --shadow-dark: rgba(13, 17, 23, 0.20);
  --shadow-accent: rgba(200, 0, 54, 0.12);
  --shadow-premium: 0 8px 24px rgba(13, 17, 23, 0.15), 0 2px 8px rgba(13, 17, 23, 0.10);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 10px 30px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 20px 40px rgba(0, 0, 0, 0.1);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-primary: 0 4px 15px rgba(200, 0, 54, 0.15);
  --shadow-primary-lg: 0 8px 25px rgba(200, 0, 54, 0.2);
  --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-hover-lg: 0 12px 30px rgba(0, 0, 0, 0.15);

  /* 渐变色调 */
  --gradient-primary: linear-gradient(135deg, #C80036 0%, #E6004D 50%, #C80036 100%);
  --gradient-primary-light: linear-gradient(135deg, #C80036 0%, #E94560 100%);
  --gradient-primary-dark: linear-gradient(135deg, #C80036 0%, #8B0026 100%);
  --gradient-cta: linear-gradient(135deg, rgba(200, 0, 54, 0.95) 0%, rgba(214, 56, 85, 0.95) 100%);
  --gradient-secondary: linear-gradient(135deg, #0A0F1C 0%, #1A2332 100%);
  --gradient-dark: linear-gradient(135deg, #0D1117 0%, #161B22 50%, #21262D 100%);
  --gradient-hero: linear-gradient(135deg, #C80036 0%, #0D1117 30%, #161B22 60%, #21262D 100%);
  --gradient-premium: linear-gradient(135deg, #C80036 0%, #A60028 100%);
  --gradient-card-blue: linear-gradient(135deg, #1a237e 0%, #0d47a1 100%);
  --gradient-card-green: linear-gradient(135deg, #00695c 0%, #004d40 100%);
  --gradient-card-orange: linear-gradient(135deg, #e65100 0%, #bf360c 100%);
  --gradient-card-purple: linear-gradient(135deg, #4a148c 0%, #6a1b9a 100%);
  --gradient-card-dark: linear-gradient(135deg, #37474f 0%, #263238 100%);
  --gradient-bg-light: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  --gradient-overlay: linear-gradient(135deg, rgba(13, 17, 23, 0.7) 0%, rgba(30, 30, 30, 0.5) 50%, rgba(13, 17, 23, 0.6) 100%);
  --gradient-white: linear-gradient(145deg, #ffffff 0%, #f5f5f5 100%);
  --gradient-white-light: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
  --gradient-accent-blue: linear-gradient(135deg, rgba(0, 123, 255, 0.08) 0%, rgba(0, 123, 255, 0.04) 100%);
  --gradient-accent-green: linear-gradient(135deg, #10b981 0%, #059669 100%);
  --gradient-accent-red: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
  --gradient-subtle: linear-gradient(135deg, rgba(200, 0, 54, 0.03) 0%, transparent 60%);
  --gradient-subtle-alt: linear-gradient(135deg, rgba(200, 0, 54, 0.08) 0%, rgba(200, 0, 54, 0.04) 100%);
  --gradient-subtle-light: linear-gradient(135deg, rgba(200, 0, 54, 0.1) 0%, rgba(214, 56, 85, 0.1) 100%);
  --gradient-dark-blue: linear-gradient(145deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  --gradient-gray-light: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
  --gradient-white-blue: linear-gradient(135deg, #fafbfc 0%, #f0f4f8 100%);

  /* RGB格式颜色变量 */
  --primary-rgb: 200, 0, 54;
  --secondary-rgb: 10, 15, 28;
  --text-rgb: 13, 17, 23;
  --dark-rgb: 13, 17, 23;
  --white-rgb: 255, 255, 255;

  /* 字体大小系统 */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 30px;
  --font-size-4xl: 36px;
  --font-size-5xl: 48px;

  /* 间距系统 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-section: 80px;

  /* 圆角系统 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 50px;

  /* 卡片系统变量 */
  --card-radius: 20px;
  --card-radius-lg: 24px;
  --card-padding: 24px;
  --card-padding-lg: 40px;
  --card-padding-xl: 50px;
  --card-icon-size-sm: 65px;
  --card-icon-size-md: 80px;
  --card-icon-size-lg: 100px;
  --card-image-height-sm: 180px;
  --card-image-height-md: 220px;
  --card-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  --card-shadow-hover: 0 35px 70px rgba(0, 0, 0, 0.1);
  --card-border: 1px solid rgba(0, 0, 0, 0.05);
  --card-border-hover: 1px solid rgba(200, 0, 54, 0.12);
  --card-transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  /* 标题字体大小 */
  --h1-font-size: 32px;
  --h2-font-size: 28px;
  --h3-font-size: 24px;
  --h4-font-size: 20px;
  --h5-font-size: 18px;
  --h6-font-size: 16px;

  /* 行高系统 */
  --line-height-tight: 1.25;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.75;
  --line-height-loose: 2;

  /* 字重系统 */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* 字间距系统 */
  --letter-spacing-tight: -0.02em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.05em;

  /* 过渡速度 */
  --transition-fast: 0.15s;
  --transition-normal: 0.3s;
  --transition-slow: 0.5s;
  --transition-bounce: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce-slower: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce-fast: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-transform: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-transform-slow: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/*  全局基础样式 - 仅设置字体和滚动行为，不覆盖Bootstrap normalize  */
html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: var(--line-height-normal);
  font-size: 16px;
  font-weight: 400;
  overflow-x: hidden;
}

/*  标题样式 - 增强Bootstrap默认样式  */
h1, h2, h3, h4, h5, h6 {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: 1rem;
}

h1 { font-size: var(--h1-font-size); line-height: var(--line-height-tight); }
h2 { font-size: var(--h2-font-size); line-height: var(--line-height-tight); }
h3 { font-size: var(--h3-font-size); line-height: var(--line-height-tight); }
h4 { font-size: var(--h4-font-size); line-height: var(--line-height-tight); }
h5 { font-size: var(--h5-font-size); line-height: var(--line-height-tight); }
h6 { font-size: var(--h6-font-size); line-height: var(--line-height-tight); }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 16px;
  font-weight: 400;
}

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

a:hover {
  color: var(--primary-dark);
}

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

/*  通用工具类  */
.text-primary-color {
  color: var(--primary-color);
}

/* section 通用样式 */
.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-secondary);
}

/* 轮播图自定义按钮 - 不与Bootstrap btn冲突 */
.btn-primary-custom {
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 50px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  display: inline-block;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary-custom::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

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

.btn-primary-custom:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  background: var(--primary-light);
  color: white;
}

.btn-primary-custom i {
  transition: transform 0.3s ease;
}

.btn-primary-custom:hover i {
  transform: translateX(4px);
}

.btn-ghost-custom {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.6);
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 50px;
  display: inline-block;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-ghost-custom::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.btn-ghost-custom:hover {
  background: white;
  color: var(--primary-color);
  border-color: white;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(255, 255, 255, 0.3);
}

.btn-ghost-custom i {
  transition: transform 0.3s ease;
}

.btn-ghost-custom:hover i {
  transform: translateX(4px);
}

.btn-lg-custom {
  padding: 1rem 2.5rem;
  font-size: 1.15rem;
}

/*  区块通用样式  */
.section-title {
  font-size: var(--h2-font-size);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  position: relative;
}

/*  页面标题通用样式  */
.page-header {
  background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
  padding: 80px 0 40px;
  margin-top: 70px;
}

.page-title {
  color: white;
  font-size: 2rem;
  font-weight: 700;
}

/*  返回顶部按钮  */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: all var(--transition-normal);
  z-index: 1000;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.back-to-top.show {
  display: flex;
}

/*  页脚通用样式  */
.footer {
  background: var(--secondary-color);
  color: rgba(255, 255, 255, 0.8);
  padding: 60px 0 20px;
}

.footer-title {
  color: white;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.footer-link {
  display: block;
  color: rgba(255, 255, 255, 0.7);
  padding: 0.3rem 0;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  margin-top: 40px;
}

.footer-info-text {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1rem;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  line-height: 1.6;
}

.footer-contact-item i {
  color: var(--primary-color);
  margin-top: 4px;
  flex-shrink: 0;
}

.copyright-text {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.875rem;
  margin: 0;
}

.icp-link {
  color: rgba(255, 255, 255, 0.6);
}

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

.social-icon {
  display: inline-flex;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  margin-right: 10px;
  color: white;
  transition: all var(--transition-normal);
}

.social-icon:hover {
  background: var(--primary-color);
  transform: translateY(-3px);
}

/*  跳过链接  */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-color);
  color: white;
  padding: 8px 16px;
  z-index: 100;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* ===== 导航栏增强样式 ===== */
.navbar {
  background: var(--bg-primary);
  box-shadow: 0 2px 20px var(--shadow-light);
  padding: 0.75rem 0;
  transition: all var(--transition-normal);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--primary-color) !important;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-brand img {
  height: 40px;
  width: auto;
}

.navbar-nav .nav-link {
  color: var(--text-primary);
  font-weight: 700;
  padding: 0.5rem 1rem !important;
  transition: color var(--transition-fast);
  text-decoration: none;
}

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

.navbar .dropdown-menu {
  border: none;
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  padding: 0.5rem 0;
  margin-top: 0.5rem;
  opacity: 1;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.navbar .dropdown-menu:not(.show) {
  opacity: 0;
  visibility: hidden;
}

.navbar .dropdown-item {
  display: block;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.2s ease;
}

.navbar .dropdown-item:hover,
.navbar .dropdown-item:focus {
  color: var(--primary-color);
  background: rgba(200, 0, 54, 0.05);
}

.navbar-toggler {
  border: none;
  padding: 0.5rem;
  background: transparent;
}

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

/* ===== 响应式导航样式 ===== */
@media (max-width: 991px) {
  .navbar {
    padding: 0.5rem 0;
    background: var(--bg-primary) !important;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
  }

  .navbar-brand img {
    height: 36px;
  }

  .navbar-toggler {
    width: 44px;
    height: 44px;
    padding: 0;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
  }

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

  .navbar-toggler:hover {
    background: rgba(200, 0, 54, 0.08);
  }

  .navbar-collapse {
    background: var(--bg-primary);
    padding: 1rem 0;
    margin-top: 0.5rem;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  }

  .navbar-nav {
    padding: 0 1rem;
  }

  .navbar-nav .nav-link {
    padding: 0.75rem 0 !important;
    border-bottom: 1px solid var(--border-color);
  }

  .navbar-nav .nav-item:last-child .nav-link {
    border-bottom: none;
  }

  .navbar .dropdown-menu {
    box-shadow: none;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin: 0.5rem 0;
    padding: 0.5rem 0;
  }

  .navbar .dropdown-item {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
  }
}

/* ===== 面包屑美化样式 ===== */
.breadcrumb-section .breadcrumb {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 10px 16px;
  margin: 0;
  border-radius: 8px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 4px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  width: 100%;
}

.breadcrumb-section .breadcrumb-item {
  display: flex;
  align-items: center;
}

.breadcrumb-section .breadcrumb-item a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  padding: 4px 10px;
  border-radius: 4px;
}

.breadcrumb-section .breadcrumb-item a:hover {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.15);
}

.breadcrumb-section .breadcrumb-item a i {
  margin-right: 4px;
  font-size: 0.8rem;
}

.breadcrumb-section .breadcrumb-item + .breadcrumb-item::before {
  content: '/';
  display: inline-block;
  color: rgba(255, 255, 255, 0.5);
  margin-right: 6px;
  font-size: 0.8rem;
}

.breadcrumb-section .breadcrumb-item.active {
  color: var(--text-white);
  font-weight: 600;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}

/* 响应式面包屑 */
@media (max-width: 575px) {
  .breadcrumb-section .breadcrumb {
    padding: 10px 16px;
    border-radius: 6px;
  }

  .breadcrumb-section .breadcrumb-item a,
  .breadcrumb-section .breadcrumb-item.active {
    font-size: 0.85rem;
    padding: 4px 8px;
  }
}

/* ===== 通用卡片组件 ===== */
.card-image {
  height: 200px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.card-image i {
  font-size: 3rem;
  color: var(--text-white);
}

.card-body {
  padding: 1.5rem;
}

.card-body h3,
.card-body h4 {
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.card-body p {
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

/* 通用图标盒子 */
.icon-box {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-box i {
  font-size: 1.5rem;
  color: var(--text-white);
}

/* 通用标签 */
.tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
}

.tag-primary {
  background: rgba(200, 0, 54, 0.1);
  color: var(--primary-color);
}

/* ===== 通用卡片样式 ===== */
.card-hover {
  transition: all var(--transition-normal);
}

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

.card-hover-subtle {
  position: relative;
}

.card-hover-subtle::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-subtle);
  opacity: 0;
  transition: opacity 0.5s ease;
}

.card-hover-subtle:hover::before {
  opacity: 1;
}

/* 通用卡片边框 */
.card-border {
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: var(--radius-xl);
  background: var(--bg-primary);
}

.card-border-hover {
  transition: all var(--transition-normal);
}

.card-border-hover:hover {
  border-color: rgba(200, 0, 54, 0.12);
  box-shadow: var(--shadow-xl);
}

/* ===== 通用标题样式 ===== */
.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: var(--h2-font-size);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.section-title p {
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* ===== 通用CTA样式 ===== */
.cta-box {
  background: var(--gradient-cta);
  background-size: cover;
  background-position: center;
  padding: 60px 0;
  position: relative;
}

.cta-box::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 80% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
}

.cta-box h2,
.cta-box h3 {
  color: var(--text-white);
  font-size: 1.8rem;
  font-weight: 700;
}

.cta-box p {
  color: rgba(255,255,255,0.9);
  font-size: 1.1rem;
}

/* ===== 通用统计样式 ===== */
.stat-box {
  text-align: center;
  padding: 20px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
}

.stat-box:hover {
  background: rgba(200, 0, 54, 0.15);
  border-color: rgba(200, 0, 54, 0.3);
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

/* ===== 通用表单样式 ===== */
.form-group {
  margin-bottom: 1rem;
}

.form-control-lg {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 0.95rem;
  transition: all 0.3s ease;
}

.form-control-lg:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.08);
}

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

.fade-in-up {
  animation: fadeInUp 0.5s ease forwards;
}

/* ===== 通用卡片系统 ===== */
.card-base {
  background: var(--bg-primary);
  border-radius: var(--radius-2xl);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.card-base::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-subtle);
  opacity: 0;
  transition: opacity 0.5s ease;
}

.card-base:hover::before {
  opacity: 1;
}

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

.card-icon-box {
  background: var(--primary-color);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-base:hover .card-icon-box {
  transform: rotate(-3deg) scale(1.05);
}

.card-icon-box i,
.card-icon-box svg {
  color: var(--text-white);
}

.card-base:hover .card-image::before {
  transform: scale(1.8);
}

.card-image i {
  color: var(--text-white);
  position: relative;
  z-index: 1;
  transition: transform 0.5s ease;
}

.card-base:hover .card-image i {
  transform: scale(1.1);
}

.card-title {
  color: var(--text-primary);
  font-weight: 700;
}

.card-text {
  color: var(--text-muted);
  line-height: 1.75;
}

.card-tag {
  font-size: 0.85rem;
  padding: 8px 16px;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all 0.3s ease;
}

.card-base:hover .card-tag {
  background: var(--primary-color);
  color: var(--text-white);
}

/* ===== 轮播图背景样式 ===== */
.carousel-slide {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  min-height: 600px;
  background-color: #1a1a2e;
}

.carousel-slide:not([style*="background-image"]) {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}

/* 轮播图背景图片 - 后备样式 */
/* .carousel-slide-1 {
  background-image: url('../images/slider/slider1.jpg');
}

.carousel-slide-2 {
  background-image: url('../images/slider/slider2.jpg');
}

.carousel-slide-3 {
  background-image: url('../images/slider/slider3.jpg');
} */

.carousel-dark-overlay {
  position: absolute !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: 100% !important;
  height: 100% !important;
  background: linear-gradient(135deg, rgba(13, 17, 23, 0.7) 0%, rgba(30, 30, 30, 0.5) 50%, rgba(13, 17, 23, 0.6) 100%) !important;
  z-index: 1 !important;
}

.carousel-container {
  position: relative;
  z-index: 2;
  padding: 120px 0 80px;
}

/* ===== 解决方案卡片渐变背景 ===== */
.card-image-blue { background: var(--gradient-card-blue); }
.card-image-green { background: var(--gradient-card-green); }
.card-image-orange { background: var(--gradient-card-orange); }
.card-image-purple { background: var(--gradient-card-purple); }
.card-image-dark { background: var(--gradient-card-dark); }

/* ===== 响应式媒体查询 ===== */
@media (max-width: 991px) {
  .carousel-slide {
    min-height: 55vh;
  }
}

@media (max-width: 767px) {
  .carousel-slide {
    min-height: 50vh;
  }
}

@media (max-width: 575px) {
  .carousel-slide {
    min-height: 50vh;
    height: 50vh;
  }
}