/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    list-style: none;
    text-decoration: none;
}
body {
    padding-top: 70px;
    background-color: #F8F9FA;
    color: #000;
    line-height: 1.7;
    transition: background-color 0.3s, color 0.3s;
}
body.night-mode {
    background-color: #1D2129;
    color: #fff;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.header {
  background-color: #000;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 99;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
body.night-mode .header {
    background-color: #181a1f;
    border-bottom-color: #373B41;
    box-shadow: 0 2px 8px rgba(0,0,0,0.8);
}
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
/* 最终版logo样式：保留原始布局+系统手写字体 */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 40px; /* 恢复你原始的字体大小 */
    color: #fff;
    font-weight: 700; /* 恢复你原始的字体权重 */
    /* 系统内置手写字体，无在线加载 */
    font-family: "Ma Shan Zheng", "华文行楷", "KaiTi", "Microsoft YaHei", sans-serif;
    /* 可选：轻微倾斜，不想加就删掉 */
    transform: rotate(-1deg);
}
/* 恢复你原始的logo图片样式 */
.logo img{
    width: 50px;
    height: 50px;
    border-radius: 4px;
    object-fit: cover;
}
.nav-list {
    display: flex;
    gap: 35px;
}
.nav-list a {
    color: #fff;
    font-size: 20px;
    transition: all 0.3s ease;
    padding: 8px 0;
    position: relative;
}
.nav-list a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #165DFF;
    transition: width 0.3s ease;
}
.nav-list a:hover {
    color: #165DFF;
}
.nav-list a:hover::after {
    width: 100%;
}
body.night-mode .nav-list a {
    color: #e5e6eb;
}
body.night-mode .nav-list a:hover {
    color: #165DFF;
}

.nav-list .active{
    color: #165DFF;
    font-size: 20px;
    transition: all 0.3s ease;
    padding: 8px 0;
    position: relative;    
}
/* 二级下拉菜单样式 */
.has-submenu {
    position: relative;
}
.submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #111;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.6);
    min-width: 140px;
    padding: 8px 0;
    opacity: 0;
    transform: translateY(-5px);
    pointer-events: none;
    z-index: 9999;
    transition: all 0.3s ease;
}
.has-submenu:hover>.submenu {
    display: block;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.submenu li a {
    display: block;
    padding: 8px 16px;
    font-size: 14px;
    color: #e5e6eb;
    white-space: nowrap;
}

.submenu li .active {
    display: block;
    padding: 8px 16px;
    font-size: 14px;
    color: #165DFF;
    white-space: nowrap;
}
.submenu li a:hover {
    color: #165DFF;
    background-color: #222;
}
body.night-mode .submenu {
    background-color: #2C3036;
    box-shadow: 0 4px 12px rgba(0,0,0,0.8);
}
body.night-mode .submenu li a {
    color: #e5e6eb;
}
body.night-mode .submenu li a:hover {
    background-color: #373B41;
    color: #165DFF;
}
.submenu li a::after {
    display: none;
}

/* 主题切换+语言切换容器 */
.theme-lang-switch {
    display: flex;
    align-items: center;
    gap: 15px;
    position: relative;
}

.lang-icon {
    display: flex; 
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #fff;
    transition: all 0.3s ease;
    width: 70px;
}

.sun {
    display: flex; 
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    color: #fff;
    transition: all 0.3s ease;
    width: 70px;
}

.lang-icon:hover {
    color: #6b6868;
    background-color: #97c6f5;
    margin-bottom: 7px;
    border-left:2px solid rgb(149, 141, 141);
    transition: all 0.3s ease;
}

.sun:hover{
    color: #6b6868;
    background-color: #97c6f5;
    margin-bottom: 5px; 
    border-right:2px solid rgb(149, 141, 141);
    border-left:2px solid rgb(149, 141, 141);
    transition: all 0.3s ease;
 } 

.lang-icon>.globe-icon{
    margin-top: 10px;
    font-size: 25px;
}

.sun>.night-icon{
    margin-top: 10px;
    font-size: 25px;
}

.light{
 font-size: 12px;
    margin-bottom: 4px;
    letter-spacing: 2.6px;
}

.lang-text {
    font-size: 12px;
    margin-bottom: 4px;
    letter-spacing: 2.6px;
}
.lang-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    padding: 8px 0;
    min-width: 120px;
    display: none;
    z-index: 1000;
    transition: all 0.3s;
}
body.night-mode .lang-menu {
    background-color: #2C3036;
    box-shadow: 0 4px 16px rgba(0,0,0,0.5);
}
.lang-menu.show {
    display: block;
    animation: fadeIn 0.3s ease;
}
.lang-item {
    padding: 8px 16px;
    color: #000;
    cursor: pointer;
    transition: background-color 0.2s;
}
body.night-mode .lang-item {
    color: rgba(178, 178, 186, 0.612)
}

body.night-mode .lang-item.active {
    color: #ffffff;
}
.lang-item:hover {
    color: #c1bfbf;
}
body.night-mode .lang-item:hover {
    background-color: #373B41;
}
.lang-item.active {
    color: #1849bd;
    font-weight: 600;
}

/* 通用淡入动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 固定在线咨询入口 */
.consult-fixed {
    position: fixed;
    right: 30px;
    bottom: 30px;
    background-color: #165DFF;
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(22,93,255,0.2);
    cursor: pointer;
    z-index: 998;
    transition: all 0.3s;
}
.consult-fixed:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(22,93,255,0.3);
}
.consult-fixed span {
    font-size: 24px;
}

/* 底部样式 */
.footer {
    background-color: #1D2129;
    color: #86909C;
    padding: 50px 0 20px;
}
.footer-container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 120px;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #2C3036;
}
.footer-sitemap {
    display: flex;
    gap: 60px;
    flex: 1;
    min-width: 300px;
}

.sitemap-column h4 {
    font-size: 16px;
    color: #fff;
    margin-bottom: 16px;
    font-weight: 500;
}
.sitemap-column a {
    font-size: 16px;
    color: #fff;
    margin-bottom: 16px;
    font-weight: 500;
}

.sitemap-column a:hover {
    font-size: 16px;
    color: #165DFF;
    margin-bottom: 16px;
    font-weight: 500;
}

.sitemap-column ul li {
    margin-bottom: 10px;
}
.sitemap-column ul li a {
    color: #86909C;
    font-size: 14px;
    transition: color 0.3s;
}
.sitemap-column ul li a:hover {
    color: #165DFF;
}
.footer-contact {
    flex: 0 0 250px;
    text-align: left;
}
.footer-contact h4 {
    font-size: 16px;
    color: #fff;
    margin-bottom: 16px;
    font-weight: 500;
}
.footer-email {
    font-size: 14px;
    color: #86909C;
    margin-bottom: 20px;
}
.qrcode-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.qrcode-item {
    display: flex;
    align-items: center;
    gap: 12px;
}
.qrcode-img {
    width: 60px;
    height: 60px;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid #2C3036;
}
.qrcode-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.qrcode-text {
    font-size: 14px;
    color: #86909C;
}
.footer-message {
    flex: 0 0 300px;
    background: #2C3036;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.message-title {
    font-size: 18px;
    color: #fff;
    margin-bottom: 20px;
    text-align: left;
    font-weight: 500;
}
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: #fff;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    background: #373B41;
    border: 1px solid #4E5969;
    border-radius: 4px;
    font-size: 14px;
    color: #fff;
    resize: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #a5aab0;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #165DFF;
}
.submit-btn {
    width: 100%;
    background-color: #165DFF;
    color: #fff;
    border: none;
    padding: 10px 0;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.3s;
}
.submit-btn:hover {
    background-color: #0E42D2;
}
.footer-brand {
    text-align: center;
    margin-bottom: 20px;
}
.footer-brand h2 {
    font-size: 60px;
    color: #fff;
    margin-bottom: 8px;
    font-weight: 700;
}
.footer-slogan {
    font-size: 16px;
    color: #86909C;
    letter-spacing: 1px;
}
.footer-bottom {
    text-align: center;
    font-size: 12px;
    line-height: 2;
}
.footer-bottom a {
    color: #86909C;
    margin: 0 8px;
    transition: color 0.3s;
}
.footer-bottom a:hover {
    color: #165DFF;
}

/* 移动端导航按钮基础样式 */
.mobile-nav-toggle {
  display: none; /* 桌面端隐藏 */
  width: 30px;
  height: 30px;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  color: #fff;
}
.mobile-nav-toggle span {
  width: 100%;
  height: 2px;
  background-color: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}
body.night-mode .mobile-nav-toggle span {
  background-color: #e5e6eb;
}

/* 移动端适配 - 优化版（核心改动） */
@media (max-width: 768px) {
  /* 1. 导航栏布局优化：防止logo/按钮挤压 */
  .nav {
    position: relative;
    height: 70px;
    padding: 0 10px; /* 新增：左右内边距，避免内容贴边 */
  }

  /* 2. Logo适配：缩小字体+取消倾斜，适配移动端 */
  .logo {
    font-size: 25px; /* 移动端缩小logo字体 */
    transform: none; /* 取消倾斜，避免移动端显示错位 */
    z-index: 100; /* 保证logo不被遮挡 */
  }
  .logo img {
    width: 40px; /* 移动端缩小logo图片 */
    height: 40px;
  }

  /* 3. 汉堡菜单：优化位置+交互 */
  .mobile-nav-toggle {
    display: flex !important;
    position: absolute;
    right: 80px; /* 调整位置，避免和语言按钮重叠 */
    top: 50%;
    transform: translateY(-50%); /* 垂直居中，取消固定top */
    z-index: 100;
  }

  /* 4. 语言+夜间模式按钮：优化布局，避免挤压 */
  .theme-lang-switch {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: row;
    gap: 8px; /* 缩小间距，适配移动端 */
    width: auto;
  }
  .lang-icon, .sun {
    width: auto;
    height: auto;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3px; /* 缩小内边距 */
  }
  .lang-icon .globe-icon,
  .sun .night-icon {
    font-size: 18px; /* 缩小图标 */
    margin: 0 0 2px 0;
  }
  .lang-text, .light {
    font-size: 10px; /* 缩小文字 */
    letter-spacing: 1px;
    margin: 0;
  }
  /* 修复hover抖动问题 */
  .lang-icon:hover, .sun:hover {
    margin: 0 !important;
    padding: 3px;
  }

  /* 5. 移动端导航列表：优化交互+样式 */
  .nav-list {
    position: fixed;
    top: 70px;
    right: 0;
    width: 200px; /* 缩小宽度，适配小屏 */
    height: calc(100vh - 70px);
    background-color: #000;
    flex-direction: column;
    gap: 0;
    padding: 15px 0; /* 缩小内边距 */
    transform: translateX(100%);
    transition: transform 0.3s ease-out; /* 更顺滑的动画 */
    z-index: 9998;
    box-shadow: -2px 0 10px rgba(0,0,0,0.5);
    display: flex !important;
  }
  .nav-list.show {
    transform: translateX(0);
  }
  body.night-mode .nav-list {
    background-color: #181a1f;
  }
  /* 移动端导航项：优化点击区域 */
  .nav-list li {
    width: 100%;
  }
.nav-list li a {
    display: block; /* 新增：扩大点击区域 */
    padding: 12px 20px; /* 你原有样式 */
    font-size: 15px; /* 你原有样式 */
}
  /* 移动端二级菜单：适配侧边栏 */
.has-submenu .submenu {
    position: static; /* 改为静态定位，显示在下方 */
    width: 100%;
    background-color: #131313;
    box-shadow: none;
    padding: 0;
    margin-left: 15px; /* 缩进显示 */
    /* 关键：默认隐藏，点击后显示 */
    display: none;
    opacity: 1;
    transform: none;
    pointer-events: auto;
}
  body.night-mode .has-submenu .submenu {
    background-color: #25272e;
  }
  .has-submenu .submenu li a {
    padding: 8px 15px;
    font-size: 13px;
  }

  /* 6. 语言菜单位置：优化避免超出屏幕 */
  .lang-menu {
    top: 50px;
    right: 0;
    min-width: 100px; /* 缩小宽度 */
  }

  /* 7. 底部样式优化（保留你的原有代码，仅微调） */
  .footer-contact {
    flex: 0 0 250px;
    text-align: center;
    margin:0 auto;
  }
  .footer-container {
    gap: 20px; /* 缩小间距，适配移动端 */
    padding-bottom: 20px;
  }
  .footer-sitemap {
    gap: 30px; /* 缩小间距 */
    margin: 0 auto;
    justify-content: center;
    flex: 1;
  }
  .qrcode-group {
    flex-direction: row; /* 二维码横向排列，适配移动端 */
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 10px;
  }
  .footer-message {
    flex: 0 0 90%; /* 表单宽度适配屏幕 */
    margin: 0 auto;
    padding: 15px;
  }
}

/* 咨询入口的样式 */
.form-mask {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 100;
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.form-modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  width: 90%; /* 移动端表单宽度适配 */
  max-width: 400px; /* 最大宽度限制 */
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
  padding: 20px;
  z-index: 101;
  display: none;
  opacity: 0;
  transition: all 0.3s ease-in-out;
}

.form-mask.show {
  display: block;
  opacity: 1;
}
.form-modal.show {
  display: block;
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.form-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid #eee;
}
.form-header h3 {
  margin: 0;
  font-size: 18px;
  color: #333;
}
.close-modal-btn {
  background: transparent;
  border: none;
  font-size: 20px;
  color: #999;
  cursor: pointer;
  width: 30px;
  height: 30px;
  line-height: 30px;
  text-align: center;
}
.close-modal-btn:hover {
  color: #ff0000;
}

.form-item {
  margin-bottom: 16px;
}
.form-item label {
  display: block;
  margin-bottom: 4px;
  font-weight: 500;
}
.form-item input, .form-item textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 14px;
}
.form-item textarea {
  resize: vertical;
}

.form-btn-group {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}
.form-btn-group button {
  padding: 8px 16px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}
.form-btn-group button[type="submit"] {
  background-color: #28a745;
  color: #fff;
}
.form-btn-group .close-form-btn {
  background-color: #dc3545;
  color: #fff;
}