/* ========== 全局优化样式 ========== */

/* 自定义字体（已通过 <link> 非阻塞加载） */
* {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
}

/* ========== 视频背景优化 ========== */
#global-hero-video-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
  display: block; /* JS 动态创建后即可见，不再用 display:none */
  background-color: #050a14; /* 深色背景防止视频加载闪烁 */
  /* GPU 加速 - 提升为独立合成层减少重绘 */
  will-change: transform;
  transform: translateZ(0);
  /* 注意：不使用 contain:paint，它会干扰浏览器硬件视频解码的合成 */
  contain: layout style;
}

/* 细腻度优化：添加纹理叠加层，掩盖视频压缩噪点，增加质感 */
#global-hero-video-container::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
  /* 1. 轻微的点状纹理，模拟胶片质感，掩盖压缩块 */
  background-image: radial-gradient(rgba(0, 0, 0, 0.15) 1px, transparent 1px);
  background-size: 4px 4px;
  /* 2. 轻微的暗色渐变，增强文字对比度 */
  background-color: rgba(10, 25, 41, 0.1); 
  pointer-events: none;
}

.hero-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  
  /* 视觉优化：增强对比度和饱和度，使画面更通透 */
  filter: contrast(1.08) saturate(1.08) brightness(0.95);
  
  opacity: 1; /* 移除 !important 以允许 JS 控制淡入淡出 */
  transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1); /* 平滑淡入淡出 */
  
  /* GPU 加速 - 视频独立合成层 */
  will-change: opacity;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* ── 手机端视频背景优化 ── */
@media (max-width: 768px) {
  #global-hero-video-container {
    /* 确保手机端视频容器正常显示 */
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    z-index: 0 !important;
    pointer-events: none !important;
    display: block !important;
    /* 手机端降低 GPU 资源占用 */
    will-change: auto;
    contain: layout style;
  }

  #global-hero-video-container::after {
    /* 手机端增强暗色叠加，提升文字可读性 */
    background-color: rgba(10, 25, 41, 0.25);
    /* 移除点状纹理，减少手机端渲染负担 */
    background-image: none;
  }

  .hero-video {
    /* 手机端降低滤镜强度，减少 GPU 负荷 */
    filter: contrast(1.04) saturate(1.04) brightness(0.88) !important;
    /* 确保视频不会超出容器 */
    object-fit: cover !important;
    /* 手机端缩短过渡时间 */
    transition: opacity 0.8s ease !important;
    /* 减少 GPU 层消耗 */
    will-change: auto;
  }
}

@media (max-width: 480px) {
  #global-hero-video-container::after {
    /* 超小屏幕进一步加深叠加，确保白色文字清晰 */
    background-color: rgba(10, 25, 41, 0.35);
  }

  .hero-video {
    /* 超小屏幕进一步降低亮度，突出文字 */
    filter: contrast(1.04) saturate(1.02) brightness(0.82) !important;
  }
}

/* 移除伪元素遮罩 */
.hero-section::before,
.hero-section::after {
  display: none !important;
  content: none !important;
  background: none !important;
}

/* ========== Hero 区域优化 ========== */
.hero-section {
  position: relative;
}

/* 渐变叠加层已移除 */
.hero-section > div:first-child::before {
  display: none !important;
  content: none !important;
}

/* 优化标题样式 */
.hero-section h1,
.hero-section [class*="hero-title"] {
  font-size: clamp(48px, 8vw, 96px) !important;
  font-weight: 800 !important;
  letter-spacing: 0.02em !important;
  text-shadow: 0 4px 30px rgba(0,0,0,0.3);
  background: linear-gradient(135deg, #ffffff 0%, #e0e8ff 50%, #a8c0ff 100%) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
  line-height: 1.2 !important;
  animation: heroTitleFadeIn 1s ease-out forwards;
}

/* 优化副标题 */
.hero-section [class*="hero-subtitle"],
.hero-section h1 + div {
  font-size: clamp(18px, 2.5vw, 28px) !important;
  letter-spacing: 0.15em !important;
  color: rgba(255,255,255,0.9) !important;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
  animation: heroSubtitleFadeIn 1s ease-out 0.3s forwards;
  opacity: 0;
}

/* CTA 按钮优化 */
.hero-section button,
.cta-button {
  background: linear-gradient(135deg, #4F8EFF 0%, #2563eb 50%, #1d4ed8 100%) !important;
  border: none !important;
  border-radius: 60px !important;
  padding: 18px 48px !important;
  font-size: clamp(16px, 2vw, 24px) !important;
  font-weight: 600 !important;
  letter-spacing: 0.1em !important;
  color: #fff !important;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
  width: auto !important;
  max-width: 90vw;
  white-space: nowrap;
  height: 98px !important;
  box-shadow: 0 10px 40px rgba(37, 99, 235, 0.4), 0 0 0 0 rgba(79, 142, 255, 0.4);
  animation: heroBtnFadeIn 1s ease-out 0.6s forwards;
  opacity: 0;
}

.hero-section button:hover,
.cta-button:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 15px 35px rgba(102, 126, 234, 0.5) !important;
}

.hero-section button::before,
.cta-button::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;
}

.hero-section button:hover::before,
.cta-button:hover::before {
  left: 100%;
}

/* Hero 动画关键帧 */
@keyframes heroTitleFadeIn {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes heroSubtitleFadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 0.9; transform: translateY(0); }
}

@keyframes heroBtnFadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== 导航栏优化 - 通用 header 基础样式 ========== */
header[class*="header"] {
  background: rgb(15, 23, 42) !important;
  /* 不使用 backdrop-filter — 它在视频上方每帧重算模糊会严重拖慢性能 */
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  border: 1px solid rgba(255,255,255,0.1) !important;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2) !important;
  transform: translateZ(0);
  contain: layout style;
}

header a {
  position: relative;
  transition: color 0.3s ease !important;
}

header a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #4F8EFF, #8B5CF6);
  transition: all 0.3s ease;
  transform: translateX(-50%);
  border-radius: 2px;
}

header a:hover::after {
  width: 100%;
}

/* 登录按钮 - 通用 */
.login-btn,
/* 语言切换按钮 - 消除所有边框/虚线/轮廓 */
.privacy-lang-btn,
.privacy-lang-btn:focus,
.privacy-lang-btn:focus-visible,
.privacy-lang-btn:active,
.privacy-lang-btn:hover {
  outline: none !important;
  outline-style: none !important;
  outline-width: 0 !important;
  border: none !important;
  border-style: none !important;
  box-shadow: none !important;
  -moz-outline-style: none !important;
  text-decoration: none !important;
}
.privacy-lang-btn::-moz-focus-inner {
  border: 0 !important;
  padding: 0 !important;
}
.privacy-lang-btn *,
.privacy-lang-btn img {
  outline: none !important;
  border: none !important;
  box-shadow: none !important;
  text-decoration: none !important;
}

header button:not(.lang-switcher-btn):not(.privacy-lang-btn) {
  background: linear-gradient(135deg, #4F8EFF 0%, #2563eb 100%) !important;
  border-radius: 12px !important;
  padding: 12px 28px !important;
  font-weight: 600 !important;
  transition: all 0.3s ease !important;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3) !important;
}

.login-btn:hover,
header button:hover:not(.lang-switcher-btn):not(.privacy-lang-btn) {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4) !important;
}

/* ========== Home Header - 全局透明化 ========== */
header.home-header {
  /* 完全透明背景 */
  background: transparent !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  
  /* 去除边框和阴影 */
  border: none !important;
  box-shadow: none !important;
    
  border-radius: 24px !important;
  padding: 12px 24px !important;
  transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1) !important;
  transform: translateZ(0);
  contain: layout style;
}

/* ─── header-content 子元素垂直对齐 ─── */
header.home-header .header-content {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  flex-wrap: nowrap !important;
  gap: 12px !important;
  overflow: visible !important;
}
/* 始终显示的元素：可安全设置 display */
header.home-header .header-content > .logo,
header.home-header .header-content > .lang-switcher,
header.home-header .header-content > #lang-switcher {
  align-self: center !important;
  vertical-align: middle !important;
  display: flex !important;
  align-items: center !important;
}
header.home-header .header-content > .mobile-menu-btn {
  align-self: center !important;
  vertical-align: middle !important;
  align-items: center !important;
  display: none !important;
}
/* nav-menu / login-btn：手机端 display:none，不能强制设置 display */
header.home-header .header-content > .nav-menu,
header.home-header .header-content > .login-btn {
  align-self: center !important;
  vertical-align: middle !important;
  align-items: center !important;
}
/* logo 特殊处理：品牌图标居中 */
header.home-header .header-content > .logo {
  display: inline-flex !important;
  line-height: 1 !important;
  justify-content: center !important;
  flex-shrink: 0 !important;
}
/* login-btn 特殊处理：仅在桌面端设置 inline-flex */
@media (min-width: 769px) {
  header.home-header .header-content > .nav-menu {
    display: flex !important;
    align-items: center !important;
  }
  header.home-header .header-content > .login-btn {
    display: inline-flex !important;
    justify-content: center !important;
    align-items: center !important;
    line-height: 1 !important;
  }
}

@media (max-width: 1024px) {
  header.home-header .header-content > .mobile-menu-btn {
    display: flex !important;
  }
}

/* 透明 header 下用文字阴影保证可读性 */


/* 滚动超过一屏后：显示半透明背景 */
header.home-header.header-scrolled {
  background: rgba(15, 23, 42, 0.3) !important;
  backdrop-filter: blur(8px) !important;
  -webkit-backdrop-filter: blur(8px) !important;
}

header.home-header:hover {
  /* 悬停：微微显现背景增强交互感 */
  background: rgba(15, 23, 42, 0.3) !important;
  border: none !important;
  box-shadow: none !important;
  transform: translateY(-1px);
}

/* Logo - 统一品牌图标样式 */
header.home-header .logo {
  background: none !important;
  transition: transform 0.25s ease, filter 0.25s ease !important;
  gap: 0 !important;
}
header.home-header .logo:hover {
  transform: translateY(-1px);
  filter: drop-shadow(0 10px 24px rgba(29, 78, 216, 0.28));
}

header.home-header .logo .brand-logo {
  width: auto;
  height: auto;
  gap: 14px;
}

header.home-header .logo .brand-mark {
  width: 52px;
  height: 52px;
}

header.home-header .logo .brand-logo svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

header.home-header .logo .brand-wordmark {
  position: relative;
  overflow: visible !important;
}

header.home-header .logo .brand-wordmark-main {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.2;
  padding-bottom: 2px;
  background: linear-gradient(135deg, #f8fbff 0%, #b8dcff 22%, #7dd3fc 48%, #4f8eff 75%, #dbeafe 100%);
  background-size: 160% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 8px 30px rgba(56, 189, 248, 0.18);
  transition: background-position 0.35s ease, filter 0.35s ease;
  overflow: visible !important;
}

header.home-header .logo:hover .brand-wordmark-main {
  background-position: right center;
  filter: drop-shadow(0 6px 18px rgba(96, 165, 250, 0.24));
}

@media (max-width: 1024px) {
  header.home-header .logo .brand-logo {
    gap: 12px;
  }

  header.home-header .logo .brand-mark {
    width: 46px;
    height: 46px;
  }

  header.home-header .logo .brand-wordmark-main {
    font-size: 18px;
    letter-spacing: 0.06em;
  }
}

@media (max-width: 480px) {
  header.home-header .logo .brand-logo {
    gap: 9px;
  }

  header.home-header .logo .brand-mark {
    width: 40px;
    height: 40px;
  }

  header.home-header .logo .brand-wordmark-main {
    font-size: 15px;
    letter-spacing: 0.04em;
  }
}

/* 导航菜单 - 居中布局 + 间距优化 */
header.home-header .nav-menu {
  gap: 4px !important;
  margin-left: auto !important;
  margin-right: auto !important;
  flex-shrink: 1 !important;
  min-width: 0 !important;
}

/* Material Design 导航链接 - 深色适配 */
header.home-header .nav-menu a,
header.home-header .nav-menu .dropdown-link {
  color: rgba(255, 255, 255, 0.85) !important;
  -webkit-text-fill-color: rgba(255, 255, 255, 0.85) !important;
  font-size: 14px !important;
  font-weight: 500 !important;
  padding: 8px 14px !important;
  border-radius: 100px !important;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
  text-decoration: none !important;
  position: relative;
  overflow: hidden;
  white-space: nowrap !important;
  flex-shrink: 0 !important;
}

header.home-header .nav-menu a:hover,
header.home-header .nav-menu .dropdown-link:hover {
  background: rgba(255, 255, 255, 0.1) !important;
  color: #8BB4FF !important;
  -webkit-text-fill-color: #8BB4FF !important;
  box-shadow: 0 2px 12px rgba(0,0,0,0.1) !important;
}

/* 移除下划线动画，采用 pill 形 hover 效果 */
header.home-header a::after {
  display: none !important;
}

/* 下拉箭头 - 深色适配 */
header.home-header .dropdown-link .arrow {
  border-top-color: rgba(255, 255, 255, 0.6) !important;
  transition: transform 0.3s ease, border-color 0.3s ease !important;
}
header.home-header .dropdown-link:hover .arrow {
  border-top-color: #8BB4FF !important;
  transform: rotate(180deg);
}

/* ── 产品下拉菜单 ── */
header.home-header .dropdown {
  position: relative !important;
  overflow: visible !important;
}
header.home-header .dropdown .products-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 220px;
  background: linear-gradient(135deg, rgba(22, 33, 55, 0.98) 0%, rgba(12, 20, 40, 0.99) 100%);
  border: 1px solid rgba(79, 142, 255, 0.25);
  border-radius: 14px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(79, 142, 255, 0.1) inset;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 9999;
}
/* 上方小三角 */
header.home-header .dropdown .products-dropdown-menu::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 12px;
  background: rgba(22, 33, 55, 0.98);
  border-top: 1px solid rgba(79, 142, 255, 0.25);
  border-left: 1px solid rgba(79, 142, 255, 0.25);
  transform: translateX(-50%) rotate(45deg);
  border-radius: 2px 0 0 0;
}
/* 透明桥接区域，防止鼠标移动时菜单消失 */
header.home-header .dropdown .products-dropdown-menu::after {
  content: '';
  position: absolute;
  top: -14px;
  left: 0;
  right: 0;
  height: 14px;
}
header.home-header .dropdown:hover .products-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
header.home-header .dropdown .products-dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: rgba(255, 255, 255, 0.85) !important;
  -webkit-text-fill-color: rgba(255, 255, 255, 0.85) !important;
  font-size: 14px !important;
  font-weight: 500;
  text-decoration: none !important;
  border-radius: 10px;
  transition: all 0.2s ease;
  white-space: nowrap;
}
header.home-header .dropdown .products-dropdown-menu a:hover {
  background: rgba(79, 142, 255, 0.15) !important;
  color: #8BB4FF !important;
  -webkit-text-fill-color: #8BB4FF !important;
}
header.home-header .dropdown .products-dropdown-menu a::after {
  display: none !important;
}
header.home-header .dropdown .products-dropdown-menu .menu-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(79, 142, 255, 0.2) 0%, rgba(139, 92, 246, 0.15) 100%);
  font-size: 16px;
  flex-shrink: 0;
}
header.home-header .dropdown .products-dropdown-menu .menu-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
header.home-header .dropdown .products-dropdown-menu .menu-text .menu-label {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.92);
  -webkit-text-fill-color: rgba(255, 255, 255, 0.92);
}
header.home-header .dropdown .products-dropdown-menu .menu-text .menu-desc {
  font-size: 11px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.45);
  -webkit-text-fill-color: rgba(255, 255, 255, 0.45);
}

/* ─── 社交图标 ─── */
.header-social-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  margin-right: 4px;
}

.header-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  transition: transform 0.2s ease, filter 0.2s ease !important;
}

.header-social-link::after {
  display: none !important;
}

.header-social-link:hover {
  transform: translateY(-2px) scale(1.08);
  filter: brightness(1.15) drop-shadow(0 3px 8px rgba(0, 0, 0, 0.25));
}

.header-social-link svg {
  display: block;
  flex-shrink: 0;
  border-radius: 6px;
}

@media (max-width: 1024px) {
  .header-social-links {
    display: none !important;
  }
}

/* 登录按钮 - 蓝色渐变 CTA + 光泽动效 */
header.home-header .login-btn {
  background: linear-gradient(135deg, #4F8EFF 0%, #2563eb 100%) !important;
  color: #ffffff !important;
  -webkit-text-fill-color: #ffffff !important;
  border: none !important;
  border-radius: 100px !important;
  padding: 10px 22px !important;
  font-size: 14px !important;
  font-weight: 600 !important;
  box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3), inset 0 1px 0 rgba(255,255,255,0.2) !important;
  letter-spacing: 0.25px !important;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
  position: relative;
  overflow: hidden;
  flex-shrink: 0 !important;
  white-space: nowrap !important;
}

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

header.home-header .login-btn:hover {
  background: linear-gradient(135deg, #6BA0FF 0%, #4F8EFF 100%) !important;
  box-shadow: 0 8px 25px rgba(79, 142, 255, 0.5), inset 0 1px 0 rgba(255,255,255,0.3) !important;
  transform: translateY(-2px) !important;
}

header.home-header .login-btn:hover::before {
  left: 100%;
}

/* 语言切换器位置 - 固定在登录按钮左侧 */
header.home-header .lang-switcher {
  margin-right: 12px !important;
  margin-left: 0 !important;
  border-left-color: rgba(255, 255, 255, 0.1) !important;
  flex-shrink: 0 !important;
}

/* 语言切换器 - 深色 Header 适配 */
header.home-header .lang-switcher-btn {
  border: 1.5px solid rgba(79, 142, 255, 0.4) !important;
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.95) 0%, rgba(15, 23, 42, 0.98) 100%) !important;
  color: rgba(255, 255, 255, 0.95) !important;
  font-weight: 500 !important;
  padding: 8px 14px 8px 10px !important;
  border-radius: 10px !important;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
  box-shadow: 
    0 4px 12px rgba(0, 0, 0, 0.15),
    0 0 0 1px rgba(79, 142, 255, 0.1) inset,
    0 1px 2px rgba(255, 255, 255, 0.05) inset !important;
  backdrop-filter: blur(8px) !important;
  -webkit-backdrop-filter: blur(8px) !important;
}
header.home-header .lang-switcher-btn:hover {
  border-color: rgba(79, 142, 255, 0.8) !important;
  color: #ffffff !important;
  background: linear-gradient(135deg, rgba(40, 55, 80, 0.98) 0%, rgba(20, 30, 50, 0.98) 100%) !important;
  box-shadow: 
    0 6px 20px rgba(79, 142, 255, 0.3),
    0 0 0 1px rgba(79, 142, 255, 0.2) inset,
    0 1px 3px rgba(255, 255, 255, 0.1) inset !important;
  transform: translateY(-1px) !important;
}
header.home-header .lang-switcher-btn.active {
  border-color: rgba(79, 142, 255, 0.9) !important;
  color: #ffffff !important;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(37, 99, 235, 0.12) 100%) !important;
  box-shadow: 
    0 8px 24px rgba(79, 142, 255, 0.4),
    0 0 0 1px rgba(79, 142, 255, 0.3) inset,
    0 2px 4px rgba(255, 255, 255, 0.1) inset !important;
}

/* 帮助中心头部中的语言切换器位置与首页保持一致（紧挨注册/登录按钮） */
.help-center-header .lang-switcher {
  margin-right: 0 !important;
  margin-left: 0 !important;
  border-left: none !important;
}

/* 右侧动作区：语言切换 + 注册/登录 按钮并排排列 */
.help-center-header .help-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* 帮助中心头部中的语言切换器按钮样式与首页一致 */
.help-center-header .lang-switcher-btn {
  border: 1.5px solid rgba(79, 142, 255, 0.4) !important;
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.95) 0%, rgba(15, 23, 42, 0.98) 100%) !important;
  color: rgba(255, 255, 255, 0.95) !important;
  font-weight: 500 !important;
  padding: 8px 14px 8px 10px !important;
  border-radius: 10px !important;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
  box-shadow: 
    0 4px 12px rgba(0, 0, 0, 0.15),
    0 0 0 1px rgba(79, 142, 255, 0.1) inset,
    0 1px 2px rgba(255, 255, 255, 0.05) inset !important;
  backdrop-filter: blur(8px) !important;
  -webkit-backdrop-filter: blur(8px) !important;
}
.help-center-header .lang-switcher-btn:hover {
  border-color: rgba(79, 142, 255, 0.8) !important;
  color: #ffffff !important;
  background: linear-gradient(135deg, rgba(40, 55, 80, 0.98) 0%, rgba(20, 30, 50, 0.98) 100%) !important;
  box-shadow: 
    0 6px 20px rgba(79, 142, 255, 0.3),
    0 0 0 1px rgba(79, 142, 255, 0.2) inset,
    0 1px 3px rgba(255, 255, 255, 0.1) inset !important;
  transform: translateY(-1px) !important;
}
.help-center-header .lang-switcher-btn.active {
  border-color: rgba(79, 142, 255, 0.9) !important;
  color: #ffffff !important;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(37, 99, 235, 0.12) 100%) !important;
  box-shadow: 
    0 8px 24px rgba(79, 142, 255, 0.4),
    0 0 0 1px rgba(79, 142, 255, 0.3) inset,
    0 2px 4px rgba(255, 255, 255, 0.1) inset !important;
}

/* ========== Tab 区域优化 ========== */
.tab-content-img {
  width: 100%;
  max-width: 600px;
  height: auto;
  object-fit: contain;
  border-radius: 16px;
  margin-left: 0;
  transition: transform 0.5s ease;
}

.tab-content-img:hover {
  transform: scale(1.02);
}

/* Tab 按钮优化 */
.use-cases-tabs button,
.tab-btn {
  background: #f1f5f9 !important;
  border: 2px solid transparent !important;
  border-radius: 50px !important;
  padding: 14px 32px !important;
  font-weight: 500 !important;
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1) !important;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.use-cases-tabs button:hover,
.tab-btn:hover {
  background: #e2e8f0 !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* Tab 按钮点击时背景加深 */
.use-cases-tabs button:active,
.tab-btn:active {
  background: #cbd5e1 !important;
  transform: translateY(0) scale(0.98) !important;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15) inset !important;
  transition: all 0.1s ease !important;
}

/* 强制 Tab 激活样式 - 纯黑色背景 + 白色字体 */
button.force-tab-active,
button.tab-btn.force-tab-active,
.use-cases-tabs button.force-tab-active,
.force-tab-active {
  background: #000000 !important;
  background-color: #000000 !important;
  background-image: none !important;
  color: #ffffff !important;
  -webkit-text-fill-color: #ffffff !important;
  border: none !important;
  border-color: transparent !important;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4) !important;
  transform: translateY(-2px);
}

/* 激活状态的Tab按钮点击时背景更深 */
.force-tab-active:active {
  background: #1a1a1a !important;
  transform: translateY(0) scale(0.98) !important;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5) inset !important;
}

.force-tab-inactive {
  background: #f1f5f9 !important;
  color: #475569 !important;
  border-color: transparent !important;
}

/* 非激活状态的Tab按钮点击时背景加深 */
.force-tab-inactive:active {
  background: #cbd5e1 !important;
  transform: translateY(0) scale(0.98) !important;
  box-shadow: 0 2px 6px rgba(0,0,0,0.15) inset !important;
}

/* Tab 内容区域优化 */
.use-case-content {
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%) !important;
  border: 1px solid rgba(0,0,0,0.05) !important;
  box-shadow: 0 25px 80px rgba(0,0,0,0.08) !important;
  border-radius: 24px !important;
}

/* 动画样式 */
.slide-content {
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.slide-hidden {
  opacity: 0;
  transform: translateX(30px);
}

.slide-visible {
  opacity: 1;
  transform: translateX(0);
}

/* ========== 定价卡片优化 ========== */
.pricing-card {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%) !important;
  border: 1px solid rgba(0,0,0,0.05) !important;
  border-radius: 24px !important;
  position: relative;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.pricing-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #4F8EFF, #8B5CF6, #EC4899);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-12px) !important;
  box-shadow: 0 30px 60px rgba(0,0,0,0.12) !important;
}

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

/* 定价按钮优化 */
.pricing-btn {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%) !important;
  border-radius: 50px !important;
  padding: 16px 40px !important;
  font-weight: 600 !important;
  font-size: 15px !important;
  letter-spacing: 0.5px !important;
  color: #fff !important;
  border: none !important;
  cursor: pointer !important;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1) !important;
  box-shadow: 0 4px 15px rgba(15, 23, 42, 0.2) !important;
}

.pricing-btn:hover {
  background: linear-gradient(135deg, #334155 0%, #1e293b 100%) !important;
  transform: translateY(-3px) scale(1.02) !important;
  box-shadow: 0 8px 25px rgba(15, 23, 42, 0.35) !important;
}

.pricing-btn:active {
  transform: translateY(0) scale(0.97) !important;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.25) !important;
  transition-duration: 0.1s !important;
}

/* Ripple effect for pricing button */
.pricing-btn .btn-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  transform: scale(0);
  animation: pricingBtnRipple 0.6s ease-out forwards;
  pointer-events: none;
}
@keyframes pricingBtnRipple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* Loading state for pricing button */
.pricing-btn.is-loading {
  pointer-events: none !important;
  opacity: 0.85 !important;
}
.pricing-btn.is-loading::after {
  content: '';
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-left: 8px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: pricingBtnSpin 0.6s linear infinite;
  vertical-align: middle;
}
@keyframes pricingBtnSpin {
  to { transform: rotate(360deg); }
}

/* ========== Section 标题优化 ========== */
.section-title {
  font-weight: 700 !important;
  background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
}

/* ========== 国家列表优化 ========== */

/* ── 自适应流式网格：根据屏幕宽度自动调整列数 ── */
.country-list {
  display: grid !important;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)) !important;
  gap: 16px !important;
  width: 100%;
}

.country-item {
  background: #ffffff !important;
  border: 1px solid rgba(0,0,0,0.06) !important;
  border-radius: 16px !important;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
  cursor: pointer !important;
  position: relative !important;
  overflow: hidden !important;
}

/* "查看更多国家" 卡片样式 */
.country-item.more-countries {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-height: 80px;
  background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 100%) !important;
  border: 2px dashed rgba(79, 142, 255, 0.3) !important;
  border-radius: 16px !important;
  cursor: pointer !important;
  transition: all 0.3s ease !important;
}
.country-item.more-countries:hover {
  border-color: rgba(79, 142, 255, 0.6) !important;
  background: linear-gradient(135deg, #e8f0fe 0%, #dbeafe 100%) !important;
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 24px rgba(79, 142, 255, 0.15) !important;
}
.country-item.more-countries .more-link {
  font-size: 15px;
  font-weight: 600;
  color: #3b82f6;
  letter-spacing: 0.02em;
}

/* ── IP count: hidden by default, slide-reveal on hover ── */
.country-item .country-ips {
  opacity: 0;
  max-height: 0;
  transform: translateY(-4px);
  transition: opacity 0.3s ease, max-height 0.35s ease, transform 0.3s ease;
  overflow: hidden;
  pointer-events: none;
}
.country-item:hover .country-ips {
  opacity: 1;
  max-height: 28px;
  transform: translateY(0);
}

.country-item:hover {
  transform: translateY(-4px) !important;
  box-shadow: 0 12px 30px rgba(0,0,0,0.1) !important;
  border-color: rgba(79, 142, 255, 0.5) !important;
  background: linear-gradient(to bottom right, #ffffff, #f8fafc) !important;
}

.country-item:active {
  transform: translateY(-2px) scale(0.98) !important;
  box-shadow: 0 6px 15px rgba(0,0,0,0.08) !important;
  transition: all 0.1s ease !important;
}

/* 添加点击时的光效 */
.country-item::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at center, rgba(79, 142, 255, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.country-item:active::after {
  opacity: 1;
  transition: opacity 0.1s ease;
}

/* ═══════ Out-of-stock country-item states ═══════ */

/* Base: subtle desaturation + dashed border hint */
.country-item.oos-item {
  border-color: rgba(220, 38, 38, 0.12) !important;
}
.country-item.oos-item .country-flag-img {
  filter: grayscale(0.35) opacity(0.78);
  transition: filter 0.35s ease;
}

/* Hover: darken + grayscale */
.country-item.oos-item:hover {
  transform: translateY(-2px) !important;
  box-shadow: 0 8px 24px rgba(0,0,0,0.12) !important;
  border-color: rgba(0,0,0,0.08) !important;
  background: #f1f5f9 !important; /* Light gray (dimmed) instead of black */
}
.country-item.oos-item:hover .country-flag-img {
  filter: grayscale(1) opacity(0.4); /* Less aggressive fading */
  transform: scale(1.02);
  transition: all 0.4s ease;
}
.country-item.oos-item:hover .country-name {
  opacity: 0.45; /* Visible ghost text */
  color: inherit; /* Don't force white */
}

/* Don't show IP count on oos hover (show oos badge instead) */
.country-item.oos-item:hover .country-ips {
  opacity: 0 !important;
  max-height: 0 !important;
}

/* ── Hover overlay for out-of-stock items ── */
.oos-hover-layer {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 2;
  /* Moderate dark overlay (not pitch black) */
  background: rgba(15, 23, 42, 0.75);
}
.country-item.oos-item:hover .oos-hover-layer {
  opacity: 1;
  pointer-events: auto;
}

/* New Icon Wrapper */
.oos-icon-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #e5e7eb;
  opacity: 0.9;
  transform: translateY(4px);
  transition: transform 0.3s ease;
}
.country-item.oos-item:hover .oos-icon-wrapper {
  transform: translateY(0);
}

.oos-main-icon {
  width: 32px;
  height: 32px;
  margin-bottom: 4px;
  stroke-width: 1.5;
  color: #f3f4f6;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.oos-icon-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  color: #e5e7eb;
  margin-top: 4px;
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* Darker 'Restock Notification' tab/button */
.oos-hover-notify {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.1);
  /* Dark red gradient */
  background: linear-gradient(135deg, #7f1d1d, #991b1b);
  color: #fee2e2;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  transition: all 0.2s ease;
  letter-spacing: 0.5px;
}
.oos-hover-notify:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #991b1b, #b91c1c);
  color: #fff;
  box-shadow: 0 6px 16px rgba(127, 29, 29, 0.4);
  border-color: rgba(255,255,255,0.15);
}
.oos-hover-notify svg {
  width: 14px; height: 14px;
  opacity: 0.9;
}

/* ── Small stock-status dot on corner (always visible) ── */
.oos-corner-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #ef4444;
  box-shadow: 0 0 0 2px #fff, 0 0 6px rgba(239,68,68,0.4);
  z-index: 3;
}

/* ========== 步骤卡片优化 ========== */
.step-card {
  background: #ffffff !important;
  border: 1px solid rgba(0,0,0,0.06) !important;
  border-radius: 20px !important;
  transition: all 0.4s ease !important;
  position: relative;
  overflow: hidden;
}

.step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(79, 142, 255, 0.03) 0%, rgba(139, 92, 246, 0.03) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.step-card:hover {
  transform: translateY(-8px) !important;
  box-shadow: 0 20px 50px rgba(0,0,0,0.1) !important;
}

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

.step-number {
  background: linear-gradient(135deg, #4F8EFF 0%, #8B5CF6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========== 页脚优化 ========== */
.home-footer,
footer {
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%) !important;
}

/* 页脚主容器 - 默认水平布局 */
.footer-main {
  display: flex !important;
  flex-wrap: wrap;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto 32px;
  padding: 0 24px;
  transition: all 0.3s ease;
}

/* 左侧 Logo */
.footer-left {
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #1e293b;
}

/* 中间栏目 - 默认网格5列 */
.footer-center {
  flex: 1;
  display: grid !important;
  grid-template-columns: repeat(5, 1fr);
  gap: 28px;
  transition: all 0.3s ease;
}

.footer-col {
  display: flex;
  flex-direction: column;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 16px;
  transition: font-size 0.3s ease;
}

.footer-col a {
  color: #64748b;
  font-size: 13px;
  text-decoration: none;
  margin-bottom: 10px;
  transition: color 0.2s ease, padding 0.3s ease;
  line-height: 1.5;
}

.footer-col a:hover {
  color: #2563eb;
}

/* 右侧联系方式 */
.footer-right {
  min-width: 260px;
  flex-shrink: 0;
  transition: all 0.3s ease;
}

.footer-contact h4 {
  font-size: 14px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 14px;
}

.footer-contact p {
  color: #64748b;
  font-size: 13px;
  line-height: 1.6;
  margin-bottom: 8px;
  word-break: break-word;
}

.contact-icon {
  margin-right: 6px;
}

/* 社交图标 */
.social-icons {
  display: flex !important;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 16px;
  transition: all 0.3s ease;
}

.social-icon {
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #e2e8f0 !important;
  color: #475569;
  font-size: 17px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
  position: relative;
  overflow: hidden;
}

/* hover 由 JS 控制品牌色 —— CSS 仅做基础 fallback */
.social-icon:hover {
  color: #fff !important;
  background: linear-gradient(135deg, #4F8EFF 0%, #2563eb 100%) !important;
}

/* ── 微信图标 hover 二维码悬浮卡片 ── */
.wechat-icon-wrapper {
  position: relative !important;
  overflow: visible !important;
}

.wechat-qr-tooltip {
  position: absolute;
  bottom: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18), 0 2px 8px rgba(0, 0, 0, 0.08);
  padding: 16px 16px 12px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s ease;
  z-index: 99999;
  display: flex;
  flex-direction: column;
  align-items: center;
  white-space: nowrap;
}

.wechat-icon-wrapper:hover .wechat-qr-tooltip {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.wechat-qr-tooltip img {
  width: 240px !important;
  height: 240px !important;
  min-width: 240px !important;
  max-width: none !important;
  border-radius: 12px;
  object-fit: contain;
  display: block;
}

.wechat-qr-label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  font-weight: 500;
  color: #64748b;
  text-align: center;
  line-height: 1.4;
}

/* 底部小三角箭头 */
.wechat-qr-arrow {
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background: #fff;
  box-shadow: 3px 3px 6px rgba(0, 0, 0, 0.06);
}

/* 手机端隐藏 hover 二维码（保留点击弹窗） */
@media (max-width: 768px) {
  .wechat-qr-tooltip {
    display: none !important;
  }
}

/* ── 微信弹窗响应式 ── */
.wechat-modal {
  animation: wechatModalIn 0.3s ease forwards;
}
@keyframes wechatModalIn {
  from { opacity: 0; transform: scale(0.9) translateY(20px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
@media (max-width: 768px) {
  .wechat-modal {
    max-width: 92vw !important;
    padding: 28px 20px 22px !important;
    border-radius: 16px !important;
  }
}

/* 页脚底部版权 */
.footer-bottom {
  border-top: 1px solid #e2e8f0;
  padding-top: 24px;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
  transition: all 0.3s ease;
}

.footer-bottom p {
  color: #94a3b8;
  font-size: 12px;
  text-align: center;
  line-height: 1.6;
}

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #94a3b8, #64748b);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #64748b, #475569);
}

/* ========== 响应式优化 ========== */

/* ── 汉堡菜单按钮（默认隐藏） ── */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 32px;
  height: 32px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  transition: background 0.2s ease;
  flex-shrink: 0;
  z-index: 10002;
  margin-right: 8px; /* logo 左侧间距 */
  order: -1; /* 确保排在 logo 前面 */
}
.mobile-menu-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}
.mobile-menu-btn span {
  display: block;
  width: 16px;
  height: 1.5px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 2px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.mobile-menu-btn span:nth-child(1) { margin-bottom: 4px; }
.mobile-menu-btn span:nth-child(3) { margin-top: 4px; }

/* 汉堡 → X 动画 */
.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}
.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* ── 移动端侧边抽屉菜单 ── */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 300px;
  max-width: 85vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.98) !important;
  z-index: 10001;
  padding: 90px 24px 40px;
  transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
  box-shadow: -6px 0 32px rgba(0, 0, 0, 0.08), -1px 0 8px rgba(0, 0, 0, 0.04);
  border-left: 1px solid rgba(0, 0, 0, 0.06);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
}

/* Force dark background with higher specificity */
body .mobile-nav-drawer,
div.mobile-nav-drawer {
  background: rgba(15, 23, 42, 0.98) !important;
}
.mobile-nav-drawer.open {
  right: 0;
}
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.25);
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease;
}
.mobile-nav-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-drawer a,
.mobile-nav-drawer .drawer-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  color: #fff !important;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  border-radius: 12px;
  transition: all 0.2s ease;
  margin-bottom: 4px;
}
.mobile-nav-drawer a:hover,
.mobile-nav-drawer .drawer-link:hover {
  background: rgba(79, 142, 255, 0.08);
  color: #2563eb;
}
.mobile-nav-drawer a.active {
  background: rgba(79, 142, 255, 0.1);
  color: #2563eb;
}
.mobile-nav-drawer .drawer-divider {
  height: 1px;
  background: rgba(0, 0, 0, 0.06);
  margin: 12px 0;
}
.mobile-nav-drawer .drawer-login-btn {
  display: block;
  width: 100%;
  padding: 14px;
  margin-top: 20px;
  background: linear-gradient(135deg, #4F8EFF 0%, #2563eb 100%);
  color: #fff;
  border: none;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
  transition: all 0.3s ease;
}
.mobile-nav-drawer .drawer-login-btn:hover {
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
  transform: translateY(-1px);
}

/* ── 抽屉菜单：可展开的 section（产品/价格） ── */
.mobile-nav-drawer .drawer-section {
  margin-bottom: 2px;
}
.mobile-nav-drawer .drawer-section-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  color: #fff !important;
  font-size: 15px;
  font-weight: 500;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
  -webkit-user-select: none;
}
.mobile-nav-drawer .drawer-section-header:hover {
  background: rgba(79, 142, 255, 0.08);
  color: #2563eb;
}
.mobile-nav-drawer .drawer-section-header:active {
  background: rgba(79, 142, 255, 0.12);
}
.mobile-nav-drawer .drawer-section-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}
.mobile-nav-drawer .drawer-section-text {
  flex: 1;
}
.mobile-nav-drawer .drawer-section-arrow {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.5);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
}
.mobile-nav-drawer .drawer-section-header.open .drawer-section-arrow {
  transform: rotate(90deg);
  color: #2563eb;
}

/* 子菜单项容器 */
.mobile-nav-drawer .drawer-section-items {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
  opacity: 0;
  padding-left: 12px;
}
.mobile-nav-drawer .drawer-section-items.open {
  max-height: 300px;
  opacity: 1;
}

/* 子菜单链接 */
.mobile-nav-drawer .drawer-sub-link {
  display: flex !important;
  align-items: flex-start !important;
  gap: 10px !important;
  padding: 12px 14px 12px 20px !important;
  margin-bottom: 2px !important;
  border-radius: 10px !important;
  text-decoration: none !important;
  transition: all 0.2s ease !important;
  color: rgba(255, 255, 255, 0.8) !important;
}
.mobile-nav-drawer .drawer-sub-link:hover {
  background: rgba(79, 142, 255, 0.08) !important;
  color: #2563eb !important;
}
.mobile-nav-drawer .drawer-sub-icon {
  font-size: 16px;
  width: 22px;
  text-align: center;
  flex-shrink: 0;
  margin-top: 1px;
}
.mobile-nav-drawer .drawer-sub-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.mobile-nav-drawer .drawer-sub-label {
  font-size: 14px;
  font-weight: 500;
  color: #1e293b;
}
.mobile-nav-drawer .drawer-sub-desc {
  font-size: 12px;
  font-weight: 400;
  color: #94a3b8;
  line-height: 1.3;
}

/* 主菜单链接带图标 */
.mobile-nav-drawer .drawer-link-icon {
  font-size: 18px;
  width: 24px;
  text-align: center;
  flex-shrink: 0;
}

/* ── 中等桌面端（≤1280px）- 导航间距收紧防止遮挡 ── */
@media (max-width: 1280px) {
  header.home-header {
    padding: 10px 18px !important;
  }
  header.home-header .header-content {
    gap: 8px !important;
  }
  header.home-header .nav-menu {
    gap: 2px !important;
  }
  header.home-header .nav-menu a,
  header.home-header .nav-menu .dropdown-link {
    padding: 8px 12px !important;
    font-size: 13px !important;
  }
  header.home-header .login-btn {
    padding: 9px 18px !important;
    font-size: 13px !important;
  }
  header.home-header .lang-switcher {
    margin-right: 8px !important;
  }
}

/* ── Tablet（≤1024px） ── */
@media (max-width: 1024px) {
  /* 平板端 header-content 去掉 padding + 垂直对齐 */
  .header-content {
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
  }

  /* 平板端导航菜单 - 缩小间距和 padding 适配 6 个菜单项 */
  header.home-header .nav-menu {
    gap: 2px !important;
  }
  header.home-header .nav-menu a,
  header.home-header .nav-menu .dropdown-link {
    padding: 6px 8px !important;
    font-size: 12px !important;
  }
  header.home-header .login-btn {
    padding: 8px 16px !important;
    font-size: 12px !important;
  }
  header.home-header .lang-switcher {
    margin-right: 6px !important;
  }

  .hero-section h1,
  .hero-section [class*="hero-title"] {
    font-size: clamp(36px, 6vw, 64px) !important;
  }
  
  .use-cases-tabs {
    gap: 8px !important;
  }
  
  .use-cases-tabs button,
  .tab-btn {
    padding: 10px 20px !important;
    font-size: 14px !important;
  }

  /* 国家列表 → 自适应（平板约3列） */
  .country-list {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)) !important;
    gap: 14px !important;
  }

  /* 步骤卡片 → 2列 */
  .steps-container {
    grid-template-columns: repeat(2, 1fr) !important;
    padding: 40px 40px 100px !important;
    gap: 24px !important;
  }

  /* 页脚中间栏 → 3列 */
  .footer-center {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 24px !important;
  }
  .footer-main {
    flex-direction: column !important;
    gap: 32px !important;
    padding: 0 20px;
  }
  .footer-left {
    text-align: center;
  }
  .footer-right {
    min-width: auto !important;
    width: 100%;
  }
  .social-icons {
    justify-content: center;
  }
}

/* ── 手机端（≤768px）全面优化 ── */
@media (max-width: 768px) {
  /* 手机端 header-content 去掉 padding + 垂直对齐 */
  .header-content {
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
  }

  /* ─── Header 改为汉堡菜单模式 ─── */
  header[class*="header"] {
    padding: 15px 20px !important;
    /* 手机端完全透明，不遮挡视频 */
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
  
  header.home-header {
    top: 10px !important;
    left: 3% !important;
    right: 3% !important;
    padding: 10px 16px !important;
    border-radius: 16px !important;
    /* 完全透明背景，不遮挡底下视频 */
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: none !important;
    box-shadow: none !important;
  }
  
  header.home-header:hover {
    transform: none !important;
    background: transparent !important;
  }

  /* 滚动超过一屏后：手机端也显示半透明背景 */
  header.home-header.header-scrolled {
    background: rgba(15, 23, 42, 0.3) !important;
    backdrop-filter: blur(8px) !important;
    -webkit-backdrop-filter: blur(8px) !important;
  }
  
  /* 透明 header 下用文字阴影保证可读性 */


  header.home-header .logo {
    flex-shrink: 0;
    /* 给左上角固定的汉堡按钮留出空间 */
    margin-left: 44px !important;
  }
  
  /* 汉堡按钮：缩小尺寸，固定在左上角 */
  header.home-header .mobile-menu-btn {
    position: fixed !important;
    top: 12px !important;
    left: 12px !important;
    width: 32px !important;
    height: 32px !important;
    padding: 6px !important;
    margin: 0 !important;
    filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.5));
  }
  header.home-header .mobile-menu-btn span {
    width: 16px !important;
    height: 1.5px !important;
  }
  header.home-header .mobile-menu-btn span:nth-child(1) { margin-bottom: 4px !important; }
  header.home-header .mobile-menu-btn span:nth-child(3) { margin-top: 4px !important; }

  /* 隐藏桌面导航，显示汉堡按钮 */
  header.home-header .nav-menu {
    display: none !important;
  }
  header.home-header .login-btn {
    display: none !important;
  }
  header.home-header .lang-switcher {
    margin-right: 8px !important;
    padding-left: 0 !important;
    margin-left: auto !important;
    border-left: none !important;
  }
  .mobile-menu-btn {
    display: flex !important;
  }
  .mobile-nav-overlay.open {
    pointer-events: auto;
  }
  
  /* ─── Hero 区域 ─── */
  .hero-section {
    padding: 100px 24px 50px !important;
    min-height: auto !important;
    position: relative !important;
    overflow: hidden !important; /* 防止视频溢出 */
  }
  .hero-section h1,
  .hero-section [class*="hero-title"] {
    font-size: clamp(28px, 7vw, 48px) !important;
    margin-bottom: 20px !important;
    letter-spacing: 0 !important;
  }
  .hero-section [class*="hero-subtitle"],
  .hero-section h1 + div {
    font-size: clamp(14px, 3.5vw, 20px) !important;
    letter-spacing: 0.08em !important;
    margin-bottom: 30px !important;
  }
  .hero-section button,
  .cta-button {
    padding: 14px 36px !important;
    font-size: 16px !important;
    width: auto !important;
    max-width: 85vw !important;
    height: auto !important;
    letter-spacing: 0.05em !important;
  }
  
  /* ─── 用例 Tabs ─── */
  .use-cases-section {
    padding: 60px 16px !important;
  }
  .section-title {
    font-size: 28px !important;
    margin-bottom: 32px !important;
  }

  /* ── Tab 按钮区域：两行自动换行网格 ── */
  .use-cases-tabs {
    display: flex !important;
    flex-wrap: wrap !important;
    justify-content: center !important;
    gap: 10px 8px !important;
    overflow-x: visible !important;
    padding: 0 4px 12px !important;
    margin-bottom: 28px !important;
    -webkit-overflow-scrolling: auto;
  }
  .use-cases-tabs::-webkit-scrollbar {
    display: none;
  }
  .use-cases-tabs button,
  .tab-btn {
    padding: 10px 16px !important;
    font-size: 13px !important;
    white-space: nowrap;
    flex-shrink: 0;
    border-radius: 24px !important;
    min-height: 40px;
    line-height: 1.2 !important;
    transition: all 0.2s ease !important;
  }
  /* 激活态在手机端更醒目 */
  .use-cases-tabs button.force-tab-active {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3) !important;
    transform: scale(1.05) !important;
  }

  /* ── Tab 内容区域：上下垂直排列 ── */
  .use-case-content {
    display: flex !important;
    flex-direction: column !important;
    grid-template-columns: 1fr !important;
    padding: 28px 20px !important;
    gap: 20px !important;
    border-radius: 20px !important;
  }
  .use-case-text {
    order: 1 !important; /* 文字在上 */
    text-align: center;
  }
  .use-case-text h3 {
    font-size: 22px !important;
    margin-bottom: 12px !important;
  }
  .use-case-text p {
    font-size: 15px !important;
    line-height: 1.65 !important;
    color: #475569;
  }
  /* 图片在下，全宽居中 */
  .tab-content-img,
  .illustration-img {
    order: 2 !important; /* 图片在下 */
    max-width: 100% !important;
    width: 100% !important;
    margin-left: 0 !important;
    margin-top: 8px !important;
    border-radius: 16px !important;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1) !important;
  }
  
  /* ─── 覆盖区域 ─── */
  .coverage-section {
    padding: 60px 20px !important;
  }
  .coverage-features {
    flex-wrap: wrap !important;
    gap: 16px !important;
    justify-content: center !important;
  }
  .feature-item {
    font-size: 16px !important;
  }
  .feature-divider {
    display: none !important;
  }
  .world-map {
    padding: 0 !important;
    margin-bottom: 40px !important;
  }
  .country-list {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)) !important;
    gap: 10px !important;
  }
  .country-item {
    padding: 16px 12px !important;
    gap: 10px !important;
    border-radius: 14px !important;
  }
  .country-flag-img {
    width: 40px !important;
    height: 40px !important;
  }
  .country-name {
    font-size: 14px !important;
  }
  .country-ips {
    font-size: 12px !important;
  }
  /* 手机端 hover 不可靠，始终显示 IP 数 */
  .country-item .country-ips {
    opacity: 1 !important;
    max-height: 24px !important;
    transform: translateY(0) !important;
  }
  .country-item.more-countries {
    min-height: 70px;
  }
  .country-item.more-countries .more-link {
    font-size: 14px;
  }
  
  /* ─── 定价卡片 ─── */
  .pricing-section {
    padding: 60px 20px !important;
  }
  .pricing-cards {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
    max-width: 480px;
    margin-left: auto !important;
    margin-right: auto !important;
  }
  .pricing-card {
    padding: 32px 24px !important;
  }
  .card-title {
    font-size: 22px !important;
    margin-bottom: 24px !important;
  }
  .features-list {
    margin-bottom: 32px !important;
  }
  .features-list li {
    font-size: 14px !important;
    padding: 10px 0 !important;
  }
  .pricing-btn {
    width: 100% !important;
    padding: 14px !important;
    font-size: 15px !important;
  }
  
  /* ─── 快速开始步骤 ─── */
  .quick-start-section .section-title {
    padding: 60px 20px 30px !important;
  }
  .steps-container {
    grid-template-columns: 1fr !important;
    gap: 16px !important;
    padding: 20px 20px 80px !important;
  }
  .step-card {
    padding: 28px 22px !important;
  }
  .step-number {
    font-size: 40px !important;
    margin-bottom: 16px !important;
  }
  .step-card h3 {
    font-size: 18px !important;
    margin-bottom: 12px !important;
  }
  .step-card p {
    font-size: 14px !important;
  }
  
  /* ─── 页脚 ─── */
  .home-footer {
    padding: 40px 20px 24px !important;
  }
  .footer-main {
    flex-direction: column !important;
    gap: 28px !important;
    margin-bottom: 24px !important;
    padding: 0 !important;
  }
  .footer-left {
    text-align: center;
  }
  .footer-logo {
    font-size: 18px !important;
  }
  .footer-center {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20px !important;
  }
  .footer-col {
    text-align: left;
  }
  .footer-col h4 {
    font-size: 14px !important;
    margin-bottom: 12px !important;
    padding-bottom: 8px;
    border-bottom: 1px solid #e2e8f0;
  }
  .footer-col a {
    font-size: 13px !important;
    margin-bottom: 6px !important;
    padding: 6px 0 !important;
    display: block !important;
  }
  .footer-col a:active {
    color: #2563eb;
    background: rgba(79, 142, 255, 0.06);
    border-radius: 6px;
  }
  .footer-right {
    min-width: auto !important;
    width: 100%;
    text-align: center;
    border-top: 1px solid #e2e8f0;
    padding-top: 20px;
  }
  .footer-contact h4 {
    font-size: 14px !important;
    text-align: center;
  }
  .footer-contact p {
    font-size: 13px !important;
    text-align: center;
    word-break: break-all;
  }
  .social-icons {
    justify-content: center;
    gap: 14px !important;
  }
  .social-icon {
    width: 40px !important;
    height: 40px !important;
    font-size: 18px !important;
  }
  .footer-bottom {
    padding-top: 20px !important;
    margin-top: 8px;
  }
  .footer-bottom p {
    font-size: 11px !important;
    text-align: center;
  }
  
    /* ─── 下拉菜单 - 手机端全宽 Bottom Sheet ─── */
    header.home-header .dropdown .products-dropdown-menu {
      position: fixed !important;
      top: auto !important;
      bottom: 0 !important;
      left: 0 !important;
      right: 0 !important;
      transform: translateY(120%) !important; /* 默认隐藏在底部 */
      border-radius: 24px 24px 0 0 !important;
      min-width: 100% !important;
      max-height: 75vh;
      overflow-y: auto;
      background: #1e293b !important;
      border: 1px solid rgba(255, 255, 255, 0.1) !important;
      border-bottom: none !important;
      box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.6) !important;
      padding: 30px 20px 40px !important;
      z-index: 20000 !important;
      transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease !important;
      opacity: 0;
      visibility: hidden;
    }

    /* 显示状态 */
    header.home-header .dropdown:hover .products-dropdown-menu,
    header.home-header .dropdown:focus-within .products-dropdown-menu,
    header.home-header .dropdown.active .products-dropdown-menu {
      transform: translateY(0) !important;
      opacity: 1;
      visibility: visible;
    }

    /* 顶部拖拽指示条 */
    header.home-header .dropdown .products-dropdown-menu::before {
      content: '' !important;
      display: block !important;
      position: absolute !important;
      top: 12px !important;
      left: 50% !important;
      transform: translateX(-50%) !important;
      width: 48px !important;
      height: 5px !important;
      background: rgba(255, 255, 255, 0.2) !important;
      border-radius: 3px !important;
      border: none !important;
    }
    
    /* 下拉菜单链接优化 */
    header.home-header .dropdown .products-dropdown-menu a {
      padding: 14px 16px !important;
      margin-bottom: 8px;
      background: rgba(255, 255, 255, 0.03);
      border-radius: 12px !important;
    }
    header.home-header .dropdown .products-dropdown-menu a:active {
      background: rgba(79, 142, 255, 0.15) !important;
      transform: scale(0.98);
    }

  /* ─── Quantum Footer ─── */
  footer.quantum-footer {
    padding: 28px 0 !important;
  }
  .quantum-footer .footer-links {
    gap: 16px !important;
    flex-direction: column;
    align-items: center;
  }
  .quantum-footer .footer-links a {
    font-size: 13px !important;
  }
  .quantum-footer .footer-text {
    font-size: 12px !important;
  }
}

/* ── 超小屏幕（≤480px）极致紧凑 ── */
@media (max-width: 480px) {
  /* 超小屏 header-content 去掉 padding + 垂直对齐 */
  .header-content {
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
  }

  header.home-header {
    top: 8px !important;
    left: 2.5% !important;
    right: 2.5% !important;
    padding: 8px 12px !important;
    border-radius: 14px !important;
    /* 完全透明，不遮挡视频 */
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: none !important;
    box-shadow: none !important;
  }

  /* 滚动超过一屏后：超小屏也显示半透明背景 */
  header.home-header.header-scrolled {
    background: rgba(15, 23, 42, 0.3) !important;
    backdrop-filter: blur(8px) !important;
    -webkit-backdrop-filter: blur(8px) !important;
  }
  
  header.home-header .logo {
    margin-left: 40px !important;
  }

  /* 超小屏幕汉堡按钮 */
  header.home-header .mobile-menu-btn {
    top: 10px !important;
    left: 10px !important;
    width: 28px !important;
    height: 28px !important;
    padding: 5px !important;
  }
  header.home-header .mobile-menu-btn span {
    width: 14px !important;
    height: 1.5px !important;
  }
  header.home-header .mobile-menu-btn span:nth-child(1) { margin-bottom: 3px !important; }
  header.home-header .mobile-menu-btn span:nth-child(3) { margin-top: 3px !important; }

  /* Hero 更紧凑 */
  .hero-section {
    padding: 85px 16px 32px !important; /* 略微收紧 */
  }
  .hero-section h1,
  .hero-section [class*="hero-title"] {
    font-size: clamp(28px, 8vw, 40px) !important; /* 增大字体冲击力 */
    margin-bottom: 12px !important;
    line-height: 1.15 !important;
  }
  .hero-section [class*="hero-subtitle"],
  .hero-section h1 + div {
    font-size: clamp(14px, 4vw, 16px) !important;
    letter-spacing: 0.02em !important;
    margin-bottom: 24px !important;
    line-height: 1.5 !important;
  }
  .hero-section button,
  .cta-button {
    padding: 14px 32px !important;
    font-size: 15px !important;
    width: 100% !important; /* 按钮全宽 */
    max-width: 320px !important;
    margin-left: auto;
    margin-right: auto;
    display: block;
  }
  
  /* 国家列表 → 自适应2列（超小屏） */
  .country-list {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px !important;
  }
  .country-item {
    padding: 12px 10px !important;
    gap: 8px !important;
    border-radius: 12px !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center;
  }
  .country-flag-img {
    width: 36px !important;
    height: 36px !important;
  }
  .country-name {
    font-size: 13px !important;
  }
  .country-ips {
    font-size: 11px !important;
  }
  .country-item.more-countries {
    min-height: 60px;
  }
  .country-item.more-countries .more-link {
    font-size: 13px;
  }
  
  /* 用例区域 */
  .use-cases-section {
    padding: 40px 12px !important;
  }
  .section-title {
    font-size: 24px !important;
    margin-bottom: 24px !important;
  }
  /* Tab 按钮在超小屏更紧凑 */
  .use-cases-tabs {
    gap: 8px 6px !important;
    padding: 0 2px 10px !important;
  }
  .use-cases-tabs button,
  .tab-btn {
    padding: 8px 12px !important;
    font-size: 12px !important;
    border-radius: 20px !important;
    min-height: 36px;
  }
  .use-case-content {
    padding: 20px 16px !important;
    border-radius: 16px !important;
    gap: 16px !important;
  }
  .use-case-text h3 {
    font-size: 18px !important;
  }
  .use-case-text p {
    font-size: 14px !important;
    line-height: 1.6 !important;
  }
  .tab-content-img,
  .illustration-img {
    border-radius: 12px !important;
  }
  
  /* 定价 */
  .pricing-section {
    padding: 40px 14px !important;
  }
  .pricing-card {
    padding: 32px 20px !important; /* Increase breathing room */
    border-radius: 20px !important;
    margin-bottom: 16px;
    background: #ffffff !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.04) !important;
  }
  .card-title {
    font-size: 22px !important;
    margin-bottom: 20px !important;
  }
  .pricing-btn {
    padding: 16px !important; /* Larger touch target */
    font-size: 16px !important;
    border-radius: 14px !important;
  }
  
  /* 步骤 */
  .steps-container {
    padding: 16px 14px 60px !important;
  }
  .step-card {
    padding: 22px 18px !important;
  }
  .step-number {
    font-size: 32px !important;
  }
  
  /* 页脚 */
  .home-footer {
    padding: 30px 16px 24px !important;
  }
  .footer-main {
    gap: 24px !important;
  }
  .footer-center {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
    text-align: center;
  }
  .footer-col {
    text-align: center;
    padding-bottom: 16px;
    border-bottom: 1px solid #f1f5f9;
  }
  .footer-col:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
  .footer-col h4 {
    font-size: 15px !important;
    margin-bottom: 10px !important;
    color: #1e293b;
    border-bottom: none !important;
    padding-bottom: 0 !important;
  }
  .footer-col a {
    font-size: 14px !important;
    padding: 8px 12px !important; /* 增大点击区域 */
    display: block !important;
    color: #64748b;
    border-radius: 8px;
    transition: background 0.2s ease, color 0.2s ease;
  }
  .footer-col a:active {
    color: #2563eb;
    background: rgba(79, 142, 255, 0.08);
  }
  .footer-right {
    text-align: center;
  }
  .footer-contact p {
    font-size: 12px !important;
    line-height: 1.7 !important;
  }
  .social-icons {
    justify-content: center;
    gap: 16px !important;
  }
  .social-icon {
    width: 42px !important;
    height: 42px !important;
    font-size: 18px !important;
  }
  .footer-bottom {
    padding-top: 16px !important;
  }
  .footer-bottom p {
    font-size: 10px !important;
    line-height: 1.6;
  }
  
  /* 抽屉菜单 */
  .mobile-nav-drawer {
    width: 260px;
    padding: 72px 20px 32px;
  }
  .mobile-nav-drawer a,
  .mobile-nav-drawer .drawer-link {
    padding: 12px 14px;
    font-size: 14px;
  }
  .mobile-nav-drawer .drawer-section-header {
    padding: 12px 14px;
    font-size: 14px;
  }
  .mobile-nav-drawer .drawer-sub-link {
    padding: 10px 12px 10px 18px !important;
  }
  .mobile-nav-drawer .drawer-sub-label {
    font-size: 13px;
  }
  .mobile-nav-drawer .drawer-sub-desc {
    font-size: 11px;
  }
  .mobile-nav-drawer .drawer-section-icon,
  .mobile-nav-drawer .drawer-link-icon {
    font-size: 16px;
    width: 22px;
  }
}

/* ── 极小屏幕（≤360px）国旗列表 & 页脚微调 ── */
@media (max-width: 360px) {
  .country-list {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 6px !important;
    padding: 0 2px;
  }
  .country-item {
    padding: 10px 8px !important;
    border-radius: 10px !important;
  }
  .country-flag-img {
    width: 32px !important;
    height: 32px !important;
  }
  .country-name {
    font-size: 12px !important;
  }
  .country-ips {
    font-size: 10px !important;
  }

  /* 页脚 - 极小屏幕 */
  .home-footer {
    padding: 24px 12px 20px !important;
  }
  .footer-main {
    gap: 20px !important;
  }
  .footer-col h4 {
    font-size: 14px !important;
  }
  .footer-col a {
    font-size: 13px !important;
    padding: 7px 10px !important;
  }
  .footer-contact h4 {
    font-size: 13px !important;
  }
  .footer-contact p {
    font-size: 11px !important;
    line-height: 1.6 !important;
  }
  .social-icons {
    gap: 10px !important;
  }
  .social-icon {
    width: 38px !important;
    height: 38px !important;
    font-size: 16px !important;
  }
  .footer-bottom p {
    font-size: 9px !important;
  }
}

/* ========== 平滑滚动 ========== */
html {
  scroll-behavior: smooth;
}

/* ========== 选中文本样式 ========== */
::selection {
  background: rgba(79, 142, 255, 0.3);
  color: inherit;
}

/* ========== 帮助中心页面样式 - Google 风格白色主题 ========== */
.help-center-page {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #ffffff;
  z-index: 9999;
  overflow: hidden;
}

.help-center-page.active {
  display: flex;
  flex-direction: column;
}

/* 帮助中心顶部导航 - 与首页保持一致 */
/*
.help-center-header {
  position: fixed;
  top: 20px;
  left: 5%;
  right: 5%;
  z-index: 10001;
  background: rgb(30, 41, 59);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  padding: 16px 40px;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.help-nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.help-center-header .logo {
  font-size: 28px;
  font-weight: 700;
  background: linear-gradient(135deg, #4F8EFF 0%, #8B5CF6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  cursor: pointer;
  transition: all 0.3s ease;
}

.help-center-header .logo:hover {
  transform: scale(1.05);
}

.help-nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.help-nav-links a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  padding: 8px 0;
}

.help-nav-links a:hover {
  color: #fff;
}

.help-nav-links a.active {
  color: #4F8EFF;
}

.help-nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #4F8EFF, #8B5CF6);
  border-radius: 1px;
}

.nav-login-btn {
  padding: 10px 24px;
  background: linear-gradient(135deg, #4F8EFF 0%, #2563eb 100%);
  border: none;
  border-radius: 12px;
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(79, 142, 255, 0.4);
}

.nav-login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(79, 142, 255, 0.5);
}
*/

/* 搜索框区域 - Google 风格 */
.help-search-container {
  margin-top: 100px;
  padding: 40px 24px 24px;
  background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 100%);
  text-align: center;
}

.help-search-wrapper {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
}

.help-search-input {
  width: 100%;
  padding: 16px 52px;
  font-size: 16px;
  background: #ffffff;
  border: 1px solid #dfe1e5;
  border-radius: 24px;
  color: #202124;
  outline: none;
  transition: all 0.2s ease;
  box-shadow: none;
}

.help-search-input::placeholder {
  color: #9aa0a6;
}

.help-search-input:hover {
  box-shadow: 0 1px 6px rgba(32, 33, 36, 0.28);
  border-color: rgba(223, 225, 229, 0);
}

.help-search-input:focus {
  box-shadow: 0 1px 6px rgba(32, 33, 36, 0.28);
  border-color: rgba(223, 225, 229, 0);
}

.help-search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  color: #9aa0a6;
  pointer-events: none;
}

.help-search-clear {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  background: transparent;
  border: none;
  border-radius: 50%;
  color: #70757a;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.help-search-clear.visible {
  display: flex;
}

.help-search-clear:hover {
  background: #f1f3f4;
}

/* 搜索结果提示 */
.search-results-hint {
  max-width: 720px;
  margin: 12px auto 0;
  padding: 0 16px;
  font-size: 13px;
  color: #70757a;
  display: none;
  text-align: left;
}

.search-results-hint.visible {
  display: block;
}

.search-results-hint .highlight {
  color: #1a73e8;
  font-weight: 500;
}

/* 主内容区域 */
.help-main-content {
  flex: 1;
  display: flex;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  gap: 0;
  overflow: hidden;
  width: 100%;
}

/* 左侧目录区域 - Google 风格 */
.help-sidebar {
  width: 280px;
  min-width: 280px;
  height: calc(100vh - 200px);
  background: #ffffff;
  border-right: 1px solid #e0e0e0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 16px 16px 12px;
  border-bottom: 1px solid #e0e0e0;
}

.sidebar-header h3 {
  font-size: 11px;
  font-weight: 500;
  color: #5f6368;
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.sidebar-header h3::before {
  display: none;
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}

/* 自定义侧边栏滚动条 - Google 风格 */
.sidebar-content::-webkit-scrollbar {
  width: 8px;
}

.sidebar-content::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar-content::-webkit-scrollbar-thumb {
  background: #dadce0;
  border-radius: 4px;
  border: 2px solid #ffffff;
}

.sidebar-content::-webkit-scrollbar-thumb:hover {
  background: #bdc1c6;
}

/* 目录分类 - Google 风格 */
.toc-category {
  margin-bottom: 2px;
}

.toc-category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: transparent;
  border-radius: 0 24px 24px 0;
  cursor: pointer;
  transition: all 0.15s ease;
  border: none;
  margin-right: 8px;
}

.toc-category-header:hover {
  background: #f1f3f4;
}

.toc-category-header.active {
  background: #e8f0fe;
}

.toc-category-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 500;
  color: #202124;
}

.toc-category-icon {
  width: 20px;
  height: 20px;
  background: transparent;
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.toc-category-arrow {
  width: 18px;
  height: 18px;
  color: #5f6368;
  transition: transform 0.2s ease;
}

.toc-category-header.active .toc-category-arrow {
  transform: rotate(180deg);
  color: #1a73e8;
}

.toc-category-header.active .toc-category-title {
  color: #1a73e8;
}

/* 目录章节列表 - Google 风格 */
.toc-chapters {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.2s ease;
  padding-left: 0;
}

.toc-chapters.expanded {
  max-height: 500px;
  padding-top: 0;
}

.toc-chapter-item {
  padding: 8px 16px 8px 48px;
  margin: 0;
  font-size: 13px;
  color: #5f6368;
  border-radius: 0 24px 24px 0;
  cursor: pointer;
  transition: all 0.15s ease;
  border-left: none;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: 8px;
}

.toc-chapter-item:hover {
  background: #f1f3f4;
  color: #202124;
}

.toc-chapter-item.active {
  background: #e8f0fe;
  color: #1a73e8;
  font-weight: 500;
}

.toc-chapter-item.search-match {
  background: #fef7e0;
  color: #202124;
}

/* 子菜单展开箭头 */
.toc-chapter-item.has-sub {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.toc-chapter-item.has-sub .toc-sub-arrow {
  width: 16px;
  height: 16px;
  transition: transform 0.2s;
  color: #9aa0a6;
  flex-shrink: 0;
}
.toc-chapter-item.has-sub.sub-expanded .toc-sub-arrow {
  transform: rotate(180deg);
  color: #1a73e8;
}

/* 子菜单列表 */
.toc-sub-chapters {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.toc-sub-chapters.expanded {
  max-height: 600px;
}
.toc-sub-chapter-item {
  padding: 6px 16px 6px 64px;
  margin: 0;
  cursor: pointer;
  font-size: 12.5px;
  color: #5f6368;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: 1.4;
}
.toc-sub-chapter-item:hover {
  background: #f1f3f4;
  color: #202124;
}
.toc-sub-chapter-item.active {
  background: #e8f0fe;
  color: #1a73e8;
  font-weight: 500;
}
.toc-sub-chapter-item .sub-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #9aa0a6;
  flex-shrink: 0;
}
.toc-sub-chapter-item.active .sub-dot {
  background: #1a73e8;
}
.toc-sub-chapter-item.search-match {
  background: #fef7e0;
  color: #202124;
}

.toc-chapter-number {
  font-size: 12px;
  color: #9aa0a6;
  min-width: 24px;
}

/* 右侧内容区域 - Google 风格 */
.help-content-area {
  flex: 1;
  height: calc(100vh - 200px);
  background: #ffffff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border: none;
  border-radius: 0;
}

.content-header {
  padding: 16px 32px;
  border-bottom: 1px solid #e0e0e0;
  background: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.content-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #5f6368;
}

.content-breadcrumb .separator {
  color: #9aa0a6;
}

.content-breadcrumb .current {
  color: #1a73e8;
  font-weight: 500;
}

.content-actions {
  display: flex;
  gap: 8px;
}

.content-action-btn {
  padding: 8px 12px;
  background: transparent;
  border: none;
  border-radius: 4px;
  color: #5f6368;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.content-action-btn:hover {
  background: #f1f3f4;
  color: #202124;
}

.content-body {
  flex: 1;
  overflow-y: auto;
  padding: 32px;
}

/* 自定义内容区滚动条 - Google 风格 */
.content-body::-webkit-scrollbar {
  width: 8px;
}

.content-body::-webkit-scrollbar-track {
  background: transparent;
}

.content-body::-webkit-scrollbar-thumb {
  background: #dadce0;
  border-radius: 4px;
  border: 2px solid #ffffff;
}

.content-body::-webkit-scrollbar-thumb:hover {
  background: #bdc1c6;
}

/* 内容占位符 - Google 风格 */
.content-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: #5f6368;
}

.content-placeholder-icon {
  width: 96px;
  height: 96px;
  margin-bottom: 24px;
  background: #f1f3f4;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
}

.content-placeholder h4 {
  font-size: 22px;
  font-weight: 400;
  color: #202124;
  margin: 0 0 8px 0;
}

.content-placeholder p {
  font-size: 14px;
  color: #5f6368;
  max-width: 400px;
  line-height: 1.6;
}

/* 内容显示区域 - Google 风格 */
.content-display {
  display: none;
}

.content-display.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

.content-display h2 {
  font-size: 28px;
  font-weight: 400;
  color: #202124;
  margin: 0 0 16px 0;
  display: block;
  line-height: 1.3;
}

.content-display h2::before {
  display: none;
}

.content-display .content-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-bottom: 16px;
  margin-bottom: 24px;
  border-bottom: 1px solid #e0e0e0;
  font-size: 12px;
  color: #5f6368;
}

.content-display .content-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.content-display .content-meta svg {
  color: #9aa0a6;
}

.content-display .content-text {
  min-height: 300px;
  padding: 32px;
  background: #f8f9fa;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  color: #5f6368;
  font-size: 14px;
}
.content-display .content-text.has-content {
  display: block;
  background: #fff;
  border: none;
  padding: 0;
}

/* ── Tutorial rich content styles ── */
.tutorial-content { line-height: 1.8; color: #3c4043; }
.tutorial-content h3 { font-size: 20px; font-weight: 600; color: #202124; margin: 32px 0 12px; padding-bottom: 8px; border-bottom: 2px solid #e8f0fe; }
.tutorial-content h4 { font-size: 16px; font-weight: 600; color: #1a73e8; margin: 24px 0 8px; }
.tutorial-content p { margin: 8px 0; font-size: 14px; }
.tutorial-content ul, .tutorial-content ol { margin: 8px 0 8px 20px; font-size: 14px; }
.tutorial-content li { margin: 4px 0; }
.tutorial-content strong { color: #202124; }
.tutorial-content code {
  background: #f1f3f4; padding: 2px 6px; border-radius: 4px;
  font-family: 'Roboto Mono', monospace; font-size: 12.5px; color: #d93025;
}
.tutorial-content .info-box {
  background: #e8f0fe; border-left: 4px solid #1a73e8; padding: 12px 16px;
  border-radius: 0 8px 8px 0; margin: 16px 0; font-size: 13px; color: #174ea6;
}
.tutorial-content .info-box.warning {
  background: #fef7e0; border-left-color: #f9ab00; color: #7c6700;
}
.tutorial-content .info-box.success {
  background: #e6f4ea; border-left-color: #34a853; color: #137333;
}
.tutorial-content .step-card {
  background: #fff; border: 1px solid #e0e0e0; border-radius: 12px;
  padding: 20px; margin: 16px 0; box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}
.tutorial-content .step-card .step-header {
  display: flex; align-items: center; gap: 10px; margin-bottom: 12px;
}
.tutorial-content .step-card .step-num {
  width: 28px; height: 28px; border-radius: 50%; background: #1a73e8; color: #fff;
  display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; flex-shrink: 0;
}
.tutorial-content .step-card .step-title {
  font-size: 15px; font-weight: 600; color: #202124;
}
.tutorial-content .step-card .step-body { padding-left: 38px; font-size: 13.5px; color: #5f6368; }

/* Real screenshot images */
.tutorial-screenshot {
  margin: 16px 0;
  border: 1px solid #dadce0;
  border-radius: 10px;
  overflow: hidden;
  background: #f8f9fa;
}
.tutorial-screenshot .screenshot-title {
  background: #e8eaed; padding: 8px 12px; display: flex; align-items: center; gap: 6px;
  font-size: 12px; color: #5f6368;
}
.tutorial-screenshot .screenshot-title .step-badge {
  background: #1a73e8; color: #fff; font-size: 10px; font-weight: 700;
  padding: 2px 8px; border-radius: 10px; margin-right: 4px;
}
.tutorial-screenshot img {
  width: 100%; display: block; border-top: 1px solid #e0e0e0;
}
.tutorial-screenshot .screenshot-caption {
  padding: 10px 14px; font-size: 12px; color: #5f6368; background: #f8f9fa;
  border-top: 1px solid #e8eaed; line-height: 1.6;
}
.tutorial-screenshot .screenshot-caption strong { color: #d93025; }
.tutorial-screenshot .screenshot-caption code {
  background: #e8eaed; padding: 1px 5px; border-radius: 3px; font-size: 11px;
}

/* Screenshot placeholder (SVG-based mock) */
.screenshot-mock {
  background: #f8f9fa; border: 1px solid #dadce0; border-radius: 10px;
  margin: 12px 0; overflow: hidden;
}
.screenshot-mock .mock-titlebar {
  background: #e8eaed; padding: 8px 12px; display: flex; align-items: center; gap: 6px;
}
.screenshot-mock .mock-dot { width: 10px; height: 10px; border-radius: 50%; }
.screenshot-mock .mock-dot.red { background: #ea4335; }
.screenshot-mock .mock-dot.yellow { background: #fbbc04; }
.screenshot-mock .mock-dot.green { background: #34a853; }
.screenshot-mock .mock-body { padding: 16px; min-height: 120px; }
.screenshot-mock .mock-body .mock-row { display: flex; align-items: center; gap: 10px; margin: 8px 0; }
.screenshot-mock .mock-body .mock-label { font-size: 12px; color: #5f6368; min-width: 80px; text-align: right; }
.screenshot-mock .mock-body .mock-input {
  flex: 1; height: 32px; background: #fff; border: 1px solid #dadce0; border-radius: 6px;
  padding: 0 10px; font-size: 12px; color: #3c4043; display: flex; align-items: center;
}
.screenshot-mock .mock-body .mock-select {
  height: 32px; background: #fff; border: 1px solid #dadce0; border-radius: 6px;
  padding: 0 10px; font-size: 12px; color: #1a73e8; font-weight: 600;
  display: flex; align-items: center; gap: 4px; min-width: 100px;
}
.screenshot-mock .mock-body .mock-btn {
  height: 32px; background: #1a73e8; color: #fff; border-radius: 6px;
  padding: 0 16px; font-size: 12px; font-weight: 600; display: flex; align-items: center; justify-content: center;
}
.screenshot-mock .mock-body .mock-btn.green { background: #34a853; }
.screenshot-mock .mock-body .mock-tag {
  display: inline-block; background: #e8f0fe; color: #1a73e8; padding: 2px 8px;
  border-radius: 4px; font-size: 11px; font-weight: 600;
}

/* Code block in tutorial */
.tutorial-content .code-block {
  background: #1e1e1e; color: #d4d4d4; padding: 16px; border-radius: 8px;
  font-family: 'Roboto Mono', monospace; font-size: 12.5px; line-height: 1.6;
  overflow-x: auto; margin: 12px 0; position: relative;
}
.tutorial-content .code-block .code-label {
  position: absolute; top: 8px; right: 12px; font-size: 10px; color: #888;
  background: #2d2d2d; padding: 2px 8px; border-radius: 4px;
}
.tutorial-content .code-block .code-line { display: block; }
.tutorial-content .code-block .hl-protocol { color: #569cd6; }
.tutorial-content .code-block .hl-ip { color: #b5cea8; }
.tutorial-content .code-block .hl-port { color: #ce9178; }
.tutorial-content .code-block .hl-user { color: #dcdcaa; }
.tutorial-content .code-block .hl-comment { color: #6a9955; }

/* Browser tab selector in tutorial */
.tutorial-content .browser-tabs {
  display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0;
}
.tutorial-content .browser-tab-btn {
  padding: 8px 16px; border: 1px solid #dadce0; border-radius: 20px;
  font-size: 13px; cursor: pointer; transition: all 0.2s; background: #fff; color: #5f6368;
}
.tutorial-content .browser-tab-btn:hover { border-color: #1a73e8; color: #1a73e8; }
.tutorial-content .browser-tab-btn.active {
  background: #1a73e8; color: #fff; border-color: #1a73e8;
}
.tutorial-content .format-table {
  width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 13px;
}
.tutorial-content .format-table th {
  background: #f1f3f4; padding: 10px 12px; text-align: left; font-weight: 600;
  color: #202124; border-bottom: 2px solid #dadce0;
}
.tutorial-content .format-table td {
  padding: 10px 12px; border-bottom: 1px solid #e0e0e0; color: #3c4043;
}
.tutorial-content .format-table tr:hover td { background: #f8f9fa; }

/* ── 套餐价格说明页面样式 ── */
.pricing-page { line-height: 1.8; color: #3c4043; }
.pricing-page h3 { font-size: 20px; font-weight: 700; color: #202124; margin: 32px 0 12px; padding-bottom: 8px; border-bottom: 2px solid #e8f0fe; }
.pricing-page h4 { font-size: 16px; font-weight: 600; color: #1a73e8; margin: 24px 0 8px; }
.pricing-page p { margin: 8px 0; font-size: 14px; }

.pricing-hero {
  background: linear-gradient(135deg, #1a73e8 0%, #6c5ce7 50%, #a855f7 100%);
  border-radius: 16px; padding: 36px 32px; color: #fff; margin-bottom: 28px;
  position: relative; overflow: hidden;
}
.pricing-hero::before {
  content: ''; position: absolute; top: -40%; right: -10%; width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
  border-radius: 50%;
}
.pricing-hero h2 { font-size: 26px; font-weight: 800; margin: 0 0 8px; position: relative; }
.pricing-hero p { font-size: 14px; opacity: 0.9; margin: 0; position: relative; }

.pricing-product-tabs {
  display: flex; gap: 12px; margin-bottom: 24px; flex-wrap: wrap;
}
.pricing-product-tab {
  flex: 1; min-width: 160px; padding: 16px 20px; border-radius: 14px;
  border: 2px solid #e0e0e0; background: #fff; cursor: pointer;
  transition: all 0.3s ease; text-align: center; position: relative;
}
.pricing-product-tab:hover { border-color: #1a73e8; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(26,115,232,0.1); }
.pricing-product-tab.active { border-color: #1a73e8; background: linear-gradient(135deg, #e8f0fe 0%, #f3e8ff 100%); }
.pricing-product-tab .tab-icon { font-size: 28px; margin-bottom: 6px; }
.pricing-product-tab .tab-label { font-size: 14px; font-weight: 700; color: #202124; }
.pricing-product-tab .tab-desc { font-size: 11px; color: #5f6368; margin-top: 2px; }
.pricing-product-tab .tab-badge {
  position: absolute; top: -8px; right: -8px; background: linear-gradient(135deg, #ea4335, #ff6b35);
  color: #fff; font-size: 10px; font-weight: 700; padding: 3px 8px; border-radius: 10px;
}
.pricing-product-tab .coming-soon {
  position: absolute; top: -8px; right: -8px; background: linear-gradient(135deg, #fbbc04, #f9ab00);
  color: #fff; font-size: 10px; font-weight: 700; padding: 3px 8px; border-radius: 10px;
}

.pricing-section {
  background: #fff; border: 1px solid #e0e0e0; border-radius: 14px;
  padding: 24px; margin-bottom: 20px; box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
.pricing-section-title {
  font-size: 15px; font-weight: 700; color: #202124; margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}
.pricing-section-title .section-icon {
  width: 28px; height: 28px; border-radius: 8px; display: flex; align-items: center;
  justify-content: center; font-size: 14px;
}

.sku-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px;
}
.sku-card {
  border: 2px solid #e8eaed; border-radius: 12px; padding: 20px 16px;
  text-align: center; transition: all 0.25s ease; cursor: default; position: relative;
  background: #fff;
}
.sku-card:hover { border-color: #1a73e8; transform: translateY(-3px); box-shadow: 0 6px 20px rgba(26,115,232,0.12); }
.sku-card .sku-name { font-size: 20px; font-weight: 800; color: #202124; margin-bottom: 4px; }
.sku-card .sku-price { font-size: 14px; color: #1a73e8; font-weight: 600; }
.sku-card .sku-price .dollar { font-size: 12px; vertical-align: super; }
.sku-card .sku-unit { font-size: 11px; color: #5f6368; margin-top: 2px; }
.sku-card .sku-popular {
  position: absolute; top: -10px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, #ff6b35, #ea4335); color: #fff;
  font-size: 10px; font-weight: 700; padding: 3px 12px; border-radius: 10px;
  white-space: nowrap;
}

.duration-grid {
  display: flex; flex-wrap: wrap; gap: 10px;
}
.duration-chip {
  padding: 8px 18px; border: 1.5px solid #e0e0e0; border-radius: 10px;
  font-size: 13px; font-weight: 500; color: #3c4043; background: #fff;
  transition: all 0.2s; position: relative; cursor: default;
}
.duration-chip:hover { border-color: #1a73e8; color: #1a73e8; }
.duration-chip .discount-badge {
  position: absolute; top: -8px; right: -6px; background: #ea4335; color: #fff;
  font-size: 9px; font-weight: 700; padding: 2px 6px; border-radius: 8px;
}

.payment-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px;
}
.payment-card {
  border: 1.5px solid #e8eaed; border-radius: 12px; padding: 14px;
  text-align: center; transition: all 0.2s; cursor: default; background: #fff;
}
.payment-card:hover { border-color: #1a73e8; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.06); }
.payment-card .pay-icon { font-size: 24px; margin-bottom: 6px; }
.payment-card .pay-name { font-size: 13px; font-weight: 600; color: #202124; }

.pricing-info-box {
  background: #e8f0fe; border-left: 4px solid #1a73e8; padding: 14px 18px;
  border-radius: 0 10px 10px 0; margin: 16px 0; font-size: 13px; color: #174ea6;
}
.pricing-info-box.warning {
  background: #fef7e0; border-left-color: #f9ab00; color: #7c6700;
}
.pricing-info-box.success {
  background: #e6f4ea; border-left-color: #34a853; color: #137333;
}

.pricing-compare-table {
  width: 100%; border-collapse: separate; border-spacing: 0; margin: 16px 0;
  font-size: 13px; border-radius: 12px; overflow: hidden;
  border: 1px solid #e0e0e0;
}
.pricing-compare-table thead th {
  background: linear-gradient(135deg, #1a73e8, #6c5ce7); color: #fff;
  padding: 14px 16px; font-weight: 700; text-align: center; font-size: 13px;
}
.pricing-compare-table thead th:first-child { text-align: left; }
.pricing-compare-table tbody td {
  padding: 12px 16px; border-bottom: 1px solid #f0f0f0; color: #3c4043; text-align: center;
}
.pricing-compare-table tbody td:first-child { text-align: left; font-weight: 600; color: #202124; }
.pricing-compare-table tbody tr:hover td { background: #f8f9fa; }
.pricing-compare-table tbody tr:last-child td { border-bottom: none; }

.pricing-flow {
  display: flex; align-items: center; gap: 0; margin: 20px 0; flex-wrap: wrap; justify-content: center;
}
.pricing-flow-step {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 14px 18px; background: #fff; border: 1.5px solid #e0e0e0;
  border-radius: 12px; min-width: 110px; text-align: center;
  transition: all 0.2s;
}
.pricing-flow-step:hover { border-color: #1a73e8; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(26,115,232,0.1); }
.pricing-flow-step .flow-icon { font-size: 22px; }
.pricing-flow-step .flow-label { font-size: 12px; font-weight: 600; color: #202124; }
.pricing-flow-arrow { font-size: 18px; color: #1a73e8; margin: 0 4px; font-weight: 700; }

.pricing-faq { margin-top: 24px; }
.pricing-faq-item {
  border: 1px solid #e0e0e0; border-radius: 10px; margin-bottom: 10px;
  overflow: hidden; transition: all 0.2s;
}
.pricing-faq-item:hover { border-color: #1a73e8; }
.pricing-faq-q {
  padding: 14px 18px; font-size: 14px; font-weight: 600; color: #202124;
  cursor: pointer; display: flex; align-items: center; gap: 10px;
  background: #fafafa; transition: background 0.2s;
}
.pricing-faq-q:hover { background: #f0f4ff; }
.pricing-faq-q .q-icon { color: #1a73e8; font-weight: 700; }
.pricing-faq-a {
  padding: 0 18px; max-height: 0; overflow: hidden; transition: all 0.3s ease;
  font-size: 13px; color: #5f6368; line-height: 1.8;
}
.pricing-faq-item.open .pricing-faq-a { max-height: 500px; padding: 14px 18px; }
.pricing-faq-item.open .pricing-faq-q { background: #e8f0fe; }

/* ── 帮助中心白色背景下 header 样式覆盖 ── */
.help-center-page header.home-header {
  background: #ffffff !important;
  border-bottom: 1px solid #e0e0e0 !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08) !important;
  border-radius: 0 !important;
  padding: 8px 24px !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
}
.help-center-page header.home-header,
.help-center-page header.home-header * {
  text-shadow: none !important;
}
.help-center-page header.home-header:hover {
  background: #ffffff !important;
  transform: none !important;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1) !important;
}
.help-center-page header.home-header.header-scrolled {
  background: #ffffff !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}

/* 帮助中心 header 导航链接 → 深色以适配白色背景 */
.help-center-page header.home-header .nav-menu a,
.help-center-page header.home-header .nav-menu .dropdown-link {
  color: #3c4043 !important;
  -webkit-text-fill-color: #3c4043 !important;
}
.help-center-page header.home-header .nav-menu a:hover,
.help-center-page header.home-header .nav-menu .dropdown-link:hover {
  color: #1a73e8 !important;
  -webkit-text-fill-color: #1a73e8 !important;
  background: #f1f3f4 !important;
}
.help-center-page header.home-header .nav-menu a.active {
  color: #1a73e8 !important;
  -webkit-text-fill-color: #1a73e8 !important;
  font-weight: 600 !important;
  background: #e8f0fe !important;
}
.help-center-page header.home-header .dropdown-link .arrow {
  border-top-color: #5f6368 !important;
}
.help-center-page header.home-header .dropdown-link:hover .arrow {
  border-top-color: #1a73e8 !important;
}

/* ── 帮助中心侧边栏"← 返回首页"链接（PC 端显示） ── */
.hc-sidebar-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  margin-bottom: 10px;
  font-size: 13px;
  font-weight: 500;
  color: #5f6368;
  text-decoration: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  line-height: 1;
}
.hc-sidebar-back svg {
  width: 16px;
  height: 16px;
  stroke: #5f6368;
  transition: stroke 0.2s ease;
  flex-shrink: 0;
}
.hc-sidebar-back span {
  white-space: nowrap;
}
.hc-sidebar-back:hover {
  color: #1a73e8;
  background: #f1f3f4;
}
.hc-sidebar-back:hover svg {
  stroke: #1a73e8;
}
.hc-sidebar-back:active {
  color: #1558b7;
  background: #e8f0fe;
  transform: scale(0.97);
}
/* 手机 / 平板端侧边栏展开时同样显示"返回首页"链接 */

/* ── 帮助中心"返回首页"按钮（仅手机端显示，与 nav-menu 隐藏断点一致 ≤768px） ── */
.hc-back-home-btn {
  display: none !important; /* 桌面端 & 平板端隐藏，保留原有 nav-menu 导航 */
}
@media (max-width: 768px) {
  .help-center-page .hc-back-home-btn {
    display: inline-flex !important;
    align-items: center;
    gap: 3px;
    margin-left: auto;
    padding: 7px 14px 7px 8px;
    font-size: 0;            /* 子元素单独控制 */
    color: #333333;
    background: transparent;
    border: 1px solid #d0d0d0;
    border-radius: 22px;
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
    flex-shrink: 0;
    line-height: 1;
    box-shadow: 0 2px 8px rgba(26, 115, 232, 0.35);
    position: relative;
    overflow: hidden;
  }
  .help-center-page .hc-back-home-btn::before {
    display: none;
  }
  .help-center-page .hc-back-home-btn span {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.3px;
    color: #333333;
  }
  .help-center-page .hc-back-home-btn svg {
    flex-shrink: 0;
    stroke: #333333;
    color: #333333;
    position: relative;
  }
  .help-center-page .hc-back-home-btn .hc-home-icon {
    fill: #333333;
    stroke: none;
  }
  .help-center-page .hc-back-home-btn:hover {
    background: #f1f3f4;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transform: translateY(-1px);
  }
  .help-center-page .hc-back-home-btn:active {
    transform: scale(0.96) translateY(0);
    background: #e8eaed;
  }
}
@media (max-width: 480px) {
  .help-center-page .hc-back-home-btn {
    padding: 6px 12px 6px 7px;
    gap: 1px;
    border-radius: 18px;
  }
  .help-center-page .hc-back-home-btn span {
    font-size: 11px;
  }
  .help-center-page .hc-back-home-btn svg {
    width: 13px;
    height: 13px;
  }
  .help-center-page .hc-back-home-btn .hc-home-icon {
    width: 12px;
    height: 12px;
  }
}

/* 帮助中心 mobile-menu-btn → 深色横杠 */
.help-center-page header.home-header .mobile-menu-btn {
  filter: none !important;
}
.help-center-page header.home-header .mobile-menu-btn span {
  background: #3c4043 !important;
}
.help-center-page header.home-header .mobile-menu-btn:hover {
  background: #f1f3f4 !important;
}

/* 响应式 - Google 风格 */

/* 手机端侧边栏切换按钮 */
.hc-sidebar-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 16px;
  background: #f8f9fa;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: #1a73e8;
  cursor: pointer;
  transition: all 0.2s ease;
}
.hc-sidebar-toggle:hover {
  background: #e8f0fe;
}
.hc-sidebar-toggle .toggle-icon {
  transition: transform 0.3s ease;
}
.hc-sidebar-toggle.open .toggle-icon {
  transform: rotate(180deg);
}

@media (max-width: 1024px) {
  /* 帮助中心 header 平板端缩小 padding */
  .help-center-page header.home-header {
    padding: 6px 16px !important;
  }

  .help-main-content {
    flex-direction: column;
    gap: 0;
    padding: 0 12px;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
  }

  /* 平板端也使用可折叠侧边栏 */
  .hc-sidebar-toggle {
    display: flex;
  }
  .help-sidebar {
    width: 100% !important;
    min-width: auto !important;
    height: auto !important;
    max-height: 0;
    overflow: hidden;
    border-right: none !important;
    border-bottom: none !important;
    transition: max-height 0.35s ease;
  }
  .help-sidebar.mobile-open {
    max-height: 50vh;
    border-bottom: 1px solid #e0e0e0 !important;
    overflow-y: auto;
  }

  .help-content-area {
    height: auto !important;
    min-height: 0 !important;
    overflow: visible !important;
  }

  .content-body {
    overflow-y: visible !important;
  }

  /* 搜索容器缩小 margin-top */
  .help-search-container {
    margin-top: 80px;
    padding: 28px 16px 18px;
  }

  /* 内容区 header：缩小内边距 */
  .content-header {
    padding: 12px 20px;
  }

  /* 内容区 body */
  .content-body {
    padding: 24px 20px;
  }

  /* pricing hero 平板适配 */
  .pricing-hero {
    padding: 28px 24px;
    border-radius: 12px;
  }
  .pricing-hero h2 {
    font-size: 22px;
  }

  /* pricing product tabs 平板 2列 */
  .pricing-product-tabs {
    gap: 10px;
  }
  .pricing-product-tab {
    min-width: 140px;
    padding: 14px 16px;
  }

  /* pricing section */
  .pricing-section {
    padding: 20px;
  }

  /* SKU grid → 2列 */
  .sku-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
  }

  /* 支付方式 grid */
  .payment-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }

  /* 对比表格横向滚动 */
  .pricing-compare-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* 购买流程步骤自动换行 */
  .pricing-flow {
    gap: 4px;
  }
  .pricing-flow-step {
    padding: 10px 14px;
    min-width: 90px;
  }
  .pricing-flow-step .flow-icon { font-size: 18px; }
  .pricing-flow-step .flow-label { font-size: 11px; }

  /* Tutorial step cards */
  .tutorial-content .step-card {
    padding: 16px;
  }
  .tutorial-content .step-card .step-body {
    padding-left: 0;
    margin-top: 8px;
  }

  /* screenshot mock 平板缩小 */
  .screenshot-mock .mock-body .mock-row {
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  /* ── 帮助中心 header 手机端 ── */
  .help-center-page header.home-header {
    padding: 6px 12px !important;
  }

  /* 帮助中心 mobile-menu-btn：使用正常流式布局而非固定定位 */
  .help-center-page header.home-header .mobile-menu-btn {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    margin-right: 8px !important;
    filter: none !important;
  }
  .help-center-page header.home-header .logo {
    margin-left: 0 !important;
  }

  .help-search-container {
    margin-top: 64px;
    padding: 16px 12px 12px;
  }

  .help-search-title {
    font-size: 20px !important;
    margin-bottom: 12px !important;
  }

  .help-search-input {
    padding: 12px 44px;
    font-size: 14px;
  }

  /* 主内容区域紧凑 + 可滚动 */
  .help-main-content {
    padding: 0 8px;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
  }

  /* 侧边栏 → 可折叠面板 */
  .hc-sidebar-toggle {
    display: flex;
    padding: 10px 14px;
    font-size: 13px;
    border-radius: 6px;
    flex-shrink: 0;
  }
  .help-sidebar {
    width: 100% !important;
    min-width: auto !important;
    height: auto !important;
    max-height: 0;
    overflow: hidden;
    border-right: none !important;
    border-bottom: none !important;
    transition: max-height 0.35s ease;
    flex-shrink: 0;
  }
  .help-sidebar.mobile-open {
    max-height: 60vh;
    border-bottom: 1px solid #e0e0e0 !important;
    overflow-y: auto;
  }

  .help-content-area {
    height: auto !important;
    min-height: 0 !important;
    overflow: visible !important;
  }

  .content-body {
    overflow-y: visible !important;
  }

  /* 内容 header */
  .content-header {
    padding: 10px 14px;
    flex-wrap: wrap;
    gap: 8px;
  }
  .content-breadcrumb {
    font-size: 12px;
    gap: 4px;
    flex-wrap: wrap;
  }
  .content-actions {
    display: none; /* 手机端隐藏打印等操作 */
  }

  .content-body {
    padding: 16px 14px;
  }

  .content-display h2 {
    font-size: 20px;
  }
  .content-display h3 {
    font-size: 16px;
  }
  .content-display p,
  .content-display li {
    font-size: 14px;
    line-height: 1.7;
  }

  /* 内容 meta 信息自适应 */
  .content-display .content-meta {
    flex-wrap: wrap;
    gap: 8px;
    font-size: 11px;
    padding-bottom: 12px;
    margin-bottom: 16px;
  }

  /* 目录项更紧凑 */
  .toc-section-item {
    padding: 10px 16px !important;
    font-size: 14px !important;
  }
  .toc-chapter-item {
    padding: 8px 14px 8px 32px;
    font-size: 13px;
  }
  .toc-sub-chapter-item {
    padding: 6px 14px 6px 44px;
    font-size: 12px;
  }

  /* 帮助中心内容区表格响应式 */
  .content-body table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 13px;
  }
  .content-body table th,
  .content-body table td {
    padding: 8px 10px !important;
    white-space: nowrap;
  }

  /* 帮助中心代码块 */
  .content-body pre,
  .content-body code {
    font-size: 12px !important;
    padding: 12px !important;
    border-radius: 8px !important;
  }

  /* ── 内容区 placeholder 手机端 ── */
  .content-placeholder-icon {
    width: 72px;
    height: 72px;
    font-size: 32px;
    margin-bottom: 16px;
  }
  .content-placeholder h4 {
    font-size: 18px;
  }
  .content-placeholder p {
    font-size: 13px;
    max-width: 280px;
  }

  /* 内容区 rich text 文本区域 */
  .content-display .content-text {
    padding: 16px !important;
  }

  /* ── Tutorial 内容 手机端 ── */
  .tutorial-content h3 {
    font-size: 17px;
    margin: 24px 0 10px;
  }
  .tutorial-content h4 {
    font-size: 14px;
    margin: 18px 0 6px;
  }
  .tutorial-content p {
    font-size: 13px;
  }
  .tutorial-content ul,
  .tutorial-content ol {
    margin-left: 14px;
    font-size: 13px;
  }

  /* step cards 手机端单列紧凑 */
  .tutorial-content .step-card {
    padding: 14px;
    margin: 10px 0;
  }
  .tutorial-content .step-card .step-num {
    width: 24px;
    height: 24px;
    font-size: 12px;
  }
  .tutorial-content .step-card .step-title {
    font-size: 14px;
  }
  .tutorial-content .step-card .step-body {
    padding-left: 0;
    margin-top: 8px;
    font-size: 13px;
  }

  /* info box */
  .tutorial-content .info-box {
    padding: 10px 12px;
    font-size: 12px;
    margin: 12px 0;
  }

  /* code block */
  .tutorial-content .code-block {
    padding: 12px;
    font-size: 11.5px;
    margin: 8px 0;
  }
  .tutorial-content .code-block .code-label {
    font-size: 9px;
    padding: 2px 6px;
  }

  /* format table 滚动 */
  .tutorial-content .format-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 12px;
  }
  .tutorial-content .format-table th,
  .tutorial-content .format-table td {
    padding: 8px 10px;
    white-space: nowrap;
  }

  /* browser tabs wrap */
  .tutorial-content .browser-tabs {
    gap: 6px;
  }
  .tutorial-content .browser-tab-btn {
    padding: 6px 12px;
    font-size: 12px;
  }

  /* screenshot */
  .tutorial-screenshot .screenshot-caption {
    font-size: 11px;
    padding: 8px 10px;
  }
  .screenshot-mock .mock-body {
    padding: 10px;
    min-height: 80px;
  }
  .screenshot-mock .mock-body .mock-row {
    flex-wrap: wrap;
    gap: 6px;
    margin: 6px 0;
  }
  .screenshot-mock .mock-body .mock-label {
    font-size: 11px;
    min-width: auto;
    text-align: left;
    width: 100%;
  }
  .screenshot-mock .mock-body .mock-input {
    height: 28px;
    font-size: 11px;
  }
  .screenshot-mock .mock-body .mock-select {
    height: 28px;
    font-size: 11px;
    min-width: 80px;
  }
  .screenshot-mock .mock-body .mock-btn {
    height: 28px;
    font-size: 11px;
    padding: 0 12px;
  }

  /* ── Pricing 内容 手机端 ── */
  .pricing-hero {
    padding: 20px 16px;
    border-radius: 10px;
    margin-bottom: 20px;
  }
  .pricing-hero h2 {
    font-size: 20px;
  }
  .pricing-hero p {
    font-size: 13px;
  }

  /* product tabs 单列 */
  .pricing-product-tabs {
    flex-direction: column;
    gap: 8px;
  }
  .pricing-product-tab {
    min-width: auto;
    width: 100%;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: left;
    border-radius: 10px;
  }
  .pricing-product-tab .tab-icon {
    font-size: 22px;
    margin-bottom: 0;
  }

  .pricing-section {
    padding: 16px;
    margin-bottom: 14px;
    border-radius: 10px;
  }

  /* SKU grid → 2列紧凑 */
  .sku-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .sku-card {
    padding: 14px 10px;
    border-radius: 10px;
  }
  .sku-card .sku-name {
    font-size: 16px;
  }
  .sku-card .sku-price {
    font-size: 12px;
  }
  .sku-card .sku-unit {
    font-size: 10px;
  }

  /* Duration chips wrap */
  .duration-grid {
    gap: 6px;
  }
  .duration-chip {
    padding: 6px 12px;
    font-size: 12px;
  }

  /* Payment grid → 2列 */
  .payment-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .payment-card {
    padding: 10px;
    border-radius: 10px;
  }
  .payment-card .pay-icon {
    font-size: 20px;
  }
  .payment-card .pay-name {
    font-size: 12px;
  }

  /* pricing info box */
  .pricing-info-box {
    padding: 10px 14px;
    font-size: 12px;
    margin: 12px 0;
  }

  /* compare table 横向滚动 */
  .pricing-compare-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 12px;
  }
  .pricing-compare-table thead th {
    padding: 10px 12px;
    font-size: 11px;
    white-space: nowrap;
  }
  .pricing-compare-table tbody td {
    padding: 8px 12px;
    white-space: nowrap;
  }

  /* purchase flow 竖排 */
  .pricing-flow {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .pricing-flow-step {
    flex-direction: row;
    padding: 10px 14px;
    min-width: auto;
    border-radius: 8px;
    gap: 10px;
    text-align: left;
  }
  .pricing-flow-step .flow-icon {
    font-size: 18px;
    flex-shrink: 0;
  }
  .pricing-flow-step .flow-label {
    font-size: 12px;
  }
  .pricing-flow-arrow {
    align-self: center;
    transform: rotate(90deg);
    margin: 2px 0;
  }

  /* FAQ */
  .pricing-faq-q {
    padding: 12px 14px;
    font-size: 13px;
  }
  .pricing-faq-a {
    font-size: 12px;
  }
  .pricing-faq-item.open .pricing-faq-a {
    padding: 10px 14px;
  }
}

/* 帮助中心 ≤480px */
@media (max-width: 480px) {
  /* header 超小屏 */
  .help-center-page header.home-header {
    padding: 4px 8px !important;
  }

  /* 帮助中心 mobile-menu-btn 超小屏流式布局 */
  .help-center-page header.home-header .mobile-menu-btn {
    position: relative !important;
    top: auto !important;
    left: auto !important;
    margin-right: 6px !important;
    width: 28px !important;
    height: 28px !important;
    padding: 5px !important;
    filter: none !important;
  }
  .help-center-page header.home-header .logo {
    margin-left: 0 !important;
  }

  .help-search-container {
    margin-top: 56px;
    padding: 12px 8px 8px;
  }
  .help-search-title {
    font-size: 18px !important;
  }
  .help-search-input {
    padding: 14px 44px;
    font-size: 16px; /* Prevent iOS zoom */
    height: 52px;
    border-radius: 12px;
  }
  .help-search-icon {
    width: 20px;
    height: 20px;
    left: 14px;
  }

  .help-main-content {
    padding: 0 4px;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch;
  }

  .hc-sidebar-toggle {
    padding: 8px 12px;
    font-size: 12px;
    border-radius: 6px;
  }

  .content-header {
    padding: 8px 10px;
  }
  .content-breadcrumb {
    font-size: 11px;
  }

  .content-body {
    padding: 14px 10px;
    overflow-y: visible !important;
  }
  .content-display h2 {
    font-size: 18px;
  }
  .content-display h3 {
    font-size: 15px;
  }

  /* meta 信息堆叠 */
  .content-display .content-meta {
    flex-direction: column;
    gap: 4px;
    font-size: 10px;
  }

  .content-display .content-text {
    padding: 12px !important;
  }

  /* placeholder 最小屏 */
  .content-placeholder-icon {
    width: 60px;
    height: 60px;
    font-size: 28px;
    margin-bottom: 12px;
  }
  .content-placeholder h4 {
    font-size: 16px;
  }
  .content-placeholder p {
    font-size: 12px;
    max-width: 240px;
  }

  /* tutorial 超小屏 */
  .tutorial-content h3 {
    font-size: 16px;
  }
  .tutorial-content h4 {
    font-size: 13px;
  }
  .tutorial-content .step-card {
    padding: 12px;
  }
  .tutorial-content .step-card .step-num {
    width: 22px;
    height: 22px;
    font-size: 11px;
  }
  .tutorial-content .step-card .step-title {
    font-size: 13px;
  }
  .tutorial-content .step-card .step-body {
    font-size: 12px;
  }
  .tutorial-content .code-block {
    padding: 10px;
    font-size: 11px;
  }

  /* pricing 超小屏 */
  .pricing-hero {
    padding: 16px 12px;
    border-radius: 8px;
  }
  .pricing-hero h2 {
    font-size: 18px;
  }
  .pricing-hero p {
    font-size: 12px;
  }

  .pricing-section {
    padding: 12px;
    border-radius: 8px;
  }

  .sku-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }
  .sku-card {
    padding: 10px 8px;
  }
  .sku-card .sku-name {
    font-size: 14px;
  }
  .sku-card .sku-price {
    font-size: 11px;
  }

  .payment-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  /* pricing flow 更紧凑 */
  .pricing-flow-step {
    padding: 8px 10px;
  }
  .pricing-flow-step .flow-label {
    font-size: 11px;
  }

  .pricing-faq-q {
    padding: 10px 12px;
    font-size: 12px;
    gap: 6px;
  }
  .pricing-faq-a {
    font-size: 11px;
  }
}

/* ── Language Switcher (override block for Light Backgrounds) ── */
#isp-lang-anchor .lang-switcher-btn {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  padding: 6px 14px 6px 10px !important;
  border: 1px solid #e2e8f0 !important;
  background: #ffffff !important;
  color: #374151 !important;
  cursor: pointer !important;
  border-radius: 20px !important;
  font-size: 0.85rem !important;
  font-weight: 500 !important;
  white-space: nowrap !important;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1) !important;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif !important;
  outline: none !important;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05) !important;
  transform: none !important;
}
#isp-lang-anchor .lang-switcher-btn:hover {
  border-color: #1A73E8 !important;
  color: #1A73E8 !important;
  background: #f0f7ff !important;
  box-shadow: 0 2px 4px rgba(26, 115, 232, 0.15) !important;
  transform: translateY(-1px) !important;
}
#isp-lang-anchor .lang-switcher-btn.active {
  background: #eff6ff !important;
  border-color: #1A73E8 !important;
  color: #1A73E8 !important;
  box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.1) !important;
}
#isp-lang-anchor .lang-switcher-btn .lang-chevron {
  color: #6b7280 !important;
  margin-left: 2px !important;
  transition: transform 0.2s !important;
}
#isp-lang-anchor .lang-switcher-btn:hover .lang-chevron {
  color: #1A73E8 !important;
}
#isp-lang-anchor .lang-switcher-btn.active .lang-chevron {
  transform: rotate(180deg) !important;
  color: #1A73E8 !important;
}

/* ── Language Dropdown (override block for Light Backgrounds) ── */
#isp-lang-anchor .lang-dropdown-panel {
  background: #ffffff !important;
  border: 1px solid #e2e8f0 !important;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1) !important;
  padding: 6px !important;
}
#isp-lang-anchor .lang-option {
  color: #374151 !important;
  border-radius: 8px !important;
  margin-bottom: 2px !important;
}
#isp-lang-anchor .lang-option:hover {
  background: #f0f7ff !important;
  color: #1A73E8 !important;
  box-shadow: none !important;
  transform: none !important;
}
#isp-lang-anchor .lang-option.active {
  background: #eff6ff !important;
  color: #1A73E8 !important;
  border: none !important;
  box-shadow: none !important;
}
#isp-lang-anchor .lang-option .lang-flag {
  border: 1px solid rgba(0,0,0,0.1) !important;
  box-shadow: none !important;
}
#isp-lang-anchor .lang-check {
  color: #1A73E8 !important;
}

/* ==============================================================
   Login Page – Mobile & Tablet Responsive Adaptation
   (compiled from index-DchfUOiL.js, cannot edit source directly)
   ============================================================== */

/* ── Tablet ≤ 1024px ── */
@media (max-width: 1024px) {
  /* Card container: widen to 85vw */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] {
    width: 85vw !important;
    max-width: 900px !important;
    height: auto !important;
    min-height: 60vh !important;
  }

  /* Form side: reduce padding */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] > .p-12 {
    padding: 2rem !important;
  }

  /* Title: reduce margin-bottom */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] > .p-12 > .mb-12 {
    margin-bottom: 1.5rem !important;
  }

  /* Divider "其他登录方式": reduce margin */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] > .p-12 .my-8 {
    margin-top: 1.5rem !important;
    margin-bottom: 1.5rem !important;
  }
}

/* ── Mobile ≤ 768px ── */
@media (max-width: 768px) {
  /* Outer container: allow scroll */
  .min-h-screen.items-center.justify-center {
    align-items: flex-start !important;
    padding: 24px 0 !important;
    min-height: 100vh !important;
    overflow-y: auto !important;
  }

  /* Card container: full width, stack vertically, auto height */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] {
    width: 92vw !important;
    max-width: 480px !important;
    height: auto !important;
    min-height: unset !important;
    flex-direction: column !important;
  }

  /* Hide image side */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] > .w-1\/2.rounded-l-lg {
    display: none !important;
  }

  /* Form side: full width, full rounding */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] > .w-1\/2.rounded-r-lg {
    width: 100% !important;
    border-radius: 16px !important;
    padding: 28px 24px !important;
  }

  /* Title smaller */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] .text-3xl {
    font-size: 1.5rem !important;
    margin-bottom: 1.25rem !important;
  }

  /* Divider "其他登录方式" */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] .my-8 {
    margin-top: 1rem !important;
    margin-bottom: 1rem !important;
  }

  /* Social login buttons: slightly smaller */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] .w-14.h-14 {
    width: 3rem !important;
    height: 3rem !important;
  }

  /* Ant Design form items: tighter spacing on mobile */
  .min-h-screen.items-center.justify-center .ant-form-item {
    margin-bottom: 16px !important;
  }

  /* Links row spacing */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] .mb-6 {
    margin-bottom: 0.75rem !important;
  }
}

/* ── Small Mobile ≤ 480px ── */
@media (max-width: 480px) {
  /* Outer container: tighter padding */
  .min-h-screen.items-center.justify-center {
    padding: 12px 0 !important;
  }

  /* Card: slightly wider to use more space */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] {
    width: 95vw !important;
    max-width: none !important;
  }

  /* Form side: tighter padding */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] > .w-1\/2.rounded-r-lg {
    padding: 20px 14px !important;
    border-radius: 12px !important;
  }

  /* Title even smaller */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] .text-3xl {
    font-size: 1.25rem !important;
    margin-bottom: 0.75rem !important;
  }

  /* Social login buttons */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] .w-14.h-14 {
    width: 2.5rem !important;
    height: 2.5rem !important;
  }

  /* Reduce form link area margin */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] .mb-6 {
    margin-bottom: 0.5rem !important;
  }

  /* Ant Design form items: even tighter */
  .min-h-screen.items-center.justify-center .ant-form-item {
    margin-bottom: 12px !important;
  }

  /* Ant Design Input: smaller height */
  .min-h-screen.items-center.justify-center .ant-input-lg,
  .min-h-screen.items-center.justify-center .ant-input-password.ant-input-affix-wrapper-lg {
    padding: 8px 12px !important;
  }

  /* Social button icons smaller */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] .w-14.h-14 .anticon {
    font-size: 22px !important;
  }

  /* Divider "其他登录方式" even tighter */
  .min-h-screen.items-center.justify-center > .w-\[64vw\] .my-8 {
    margin-top: 0.75rem !important;
    margin-bottom: 0.75rem !important;
  }
}
/* ========== Homepage Sections: Coverage, Pricing, Quick Start ========== */

/* Coverage Section */
.coverage-section {
  padding: 100px 80px;
  background: #f8fafc;
  text-align: center;
}

.coverage-section .section-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 40px;
  color: #000;
  letter-spacing: 1px;
}

.coverage-features {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 60px;
  font-size: 18px;
  color: #64748b;
}

.feature-divider {
  color: #cbd5e1;
}

.world-map {
  margin-bottom: 60px;
}

.map-image {
  max-width: 100%;
  height: auto;
}

.country-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  max-width: 1200px;
  margin: 0 auto;
}

.country-item {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 16px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
}

.country-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.1);
  border-color: #3b82f6;
}

.country-flag-img {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  object-fit: cover;
}

.country-info {
  flex: 1;
  text-align: left;
}

.country-name {
  font-size: 16px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 4px;
}

.country-ips {
  font-size: 14px;
  color: #64748b;
}

.country-item.oos-item {
  opacity: 0.7;
}

.country-item.more-countries {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #eff6ff, #dbeafe);
  border: 2px dashed #93c5fd;
}

.more-link {
  font-size: 16px;
  font-weight: 600;
  color: #3b82f6;
}

/* Pricing Section */
.pricing-section {
  padding: 100px 80px;
  background: #fff;
  text-align: center;
}

.pricing-section .section-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 60px;
  color: #000;
  letter-spacing: 1px;
}

.pricing-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.pricing-card {
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border: 1px solid #e2e8f0;
  border-radius: 24px;
  padding: 40px;
  text-align: center;
  transition: all 0.3s ease;
  position: relative;
  background-size: cover;
  background-position: center;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

.card-title {
  font-size: 28px;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 30px;
}

.features-list {
  list-style: none;
  padding: 0;
  margin: 0 0 40px 0;
  text-align: left;
}

.features-list li {
  padding: 12px 0;
  font-size: 16px;
  color: #475569;
  display: flex;
  align-items: center;
  gap: 12px;
}

.features-list .dot {
  width: 8px;
  height: 8px;
  background: #3b82f6;
  border-radius: 50%;
  flex-shrink: 0;
}

.pricing-btn {
  background: #1e293b;
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 16px 32px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  width: 100%;
}

.pricing-btn:hover {
  background: #334155;
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

/* Quick Start Section */
.quick-start-section {
  padding: 0;
  background: #fff;
  text-align: center;
  background-size: cover;
  background-position: center;
}

.quick-start-section .section-title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 60px;
  color: #000;
  letter-spacing: 1px;
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.step-card {
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 20px;
  padding: 40px;
  text-align: left;
  transition: all 0.3s ease;
}

.step-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.1);
}

.step-number {
  font-size: 48px;
  font-weight: 700;
  background: linear-gradient(135deg, #3b82f6, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}

.step-card h3 {
  font-size: 20px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 16px;
}

.step-card p {
  font-size: 16px;
  line-height: 1.6;
  color: #64748b;
}

/* ========== Home Footer - Comprehensive Multi-Column Footer ========== */
.home-footer {
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  padding: 60px 80px 30px;
  border-top: 1px solid #e2e8f0;
}

.footer-main {
  display: flex;
  gap: 60px;
  max-width: 1400px;
  margin: 0 auto 60px;
}

.footer-left {
  min-width: 200px;
}

.footer-logo {
  font-size: 32px;
  font-weight: 700;
  background: linear-gradient(135deg, #1e293b, #334155);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 20px;
}

.footer-center {
  flex: 1;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 40px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-col-title {
  font-size: 16px;
  font-weight: 600;
  color: #1e293b;
  margin-bottom: 8px;
}

.footer-col-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col-links li {
  margin: 0;
}

.footer-col-links a {
  font-size: 14px;
  color: #64748b;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-col-links a:hover {
  color: #3b82f6;
}

.footer-right {
  min-width: 280px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: #64748b;
}

.contact-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: #94a3b8;
}

.social-icons {
  display: flex;
  gap: 12px;
}

.social-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  font-size: 18px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.social-icon:hover {
  border-color: #3b82f6;
  background: #eff6ff;
  transform: translateY(-2px);
}

.footer-bottom {
  max-width: 1400px;
  margin: 0 auto;
  padding-top: 32px;
  border-top: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}

.footer-bottom-links {
  display: flex;
  gap: 32px;
}

.footer-bottom-links a {
  font-size: 14px;
  color: #64748b;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-bottom-links a:hover {
  color: #3b82f6;
}

.footer-copyright {
  font-size: 14px;
  color: #94a3b8;
}

.footer-disclaimer {
  font-size: 12px;
  color: #cbd5e1;
  max-width: 600px;
}

/* Hide the minimal quantum-footer when HomeFooter is present */
footer.quantum-footer {
  display: none !important;
}

/* ========== Desktop Navigation Dropdown Menus ========== */

/* Dropdown container */
header.home-header .nav-menu .dropdown {
  position: relative;
  display: inline-block;
}

/* Dropdown link with arrow */
header.home-header .nav-menu .dropdown .dropdown-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
}

header.home-header .nav-menu .dropdown .dropdown-link .arrow {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  transition: transform 0.2s ease;
}

header.home-header .nav-menu .dropdown:hover .dropdown-link .arrow {
  transform: rotate(180deg);
}

/* Dropdown menu */
header.home-header .dropdown .products-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 220px;
  background: linear-gradient(135deg, rgba(22, 33, 55, 0.98) 0%, rgba(12, 20, 40, 0.99) 100%);
  border: 1px solid rgba(79, 142, 255, 0.25);
  border-radius: 14px;
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(79, 142, 255, 0.1) inset;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 9999;
}

/* Upward triangle */
header.home-header .dropdown .products-dropdown-menu::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 12px;
  height: 12px;
  background: rgba(22, 33, 55, 0.98);
  border-top: 1px solid rgba(79, 142, 255, 0.25);
  border-left: 1px solid rgba(79, 142, 255, 0.25);
  border-radius: 2px 0 0 0;
}

/* Transparent bridge area to prevent menu disappearing when mouse moves */
header.home-header .dropdown .products-dropdown-menu::after {
  content: '';
  position: absolute;
  top: -14px;
  left: 0;
  right: 0;
  height: 14px;
}

/* Show dropdown on hover */
header.home-header .dropdown:hover .products-dropdown-menu,
header.home-header .dropdown .products-dropdown-menu.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

/* Dropdown menu items */
header.home-header .dropdown .products-dropdown-menu a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: rgba(255, 255, 255, 0.85) !important;
  -webkit-text-fill-color: rgba(255, 255, 255, 0.85) !important;
  font-size: 14px !important;
  font-weight: 500;
  text-decoration: none !important;
  border-radius: 10px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

header.home-header .dropdown .products-dropdown-menu a:hover {
  background: rgba(79, 142, 255, 0.15) !important;
  color: #8BB4FF !important;
  -webkit-text-fill-color: #8BB4FF !important;
}

header.home-header .dropdown .products-dropdown-menu a::after {
  display: none !important;
}

/* Menu icon */
header.home-header .dropdown .products-dropdown-menu .menu-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(79, 142, 255, 0.2) 0%, rgba(139, 92, 246, 0.15) 100%);
  font-size: 16px;
  flex-shrink: 0;
}

/* Menu text container */
header.home-header .dropdown .products-dropdown-menu .menu-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* Menu label */
header.home-header .dropdown .products-dropdown-menu .menu-text .menu-label {
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.92);
  -webkit-text-fill-color: rgba(255, 255, 255, 0.92);
}

/* Menu description */
header.home-header .dropdown .products-dropdown-menu .menu-text .menu-desc {
  font-size: 11px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.45);
  -webkit-text-fill-color: rgba(255, 255, 255, 0.45);
}

/* 甯姪涓績娣辫壊鍝佺墝瀛楅€傞厤 */
.help-center-page header.home-header .logo .brand-wordmark-main {
  background: linear-gradient(135deg, #1e40af 0%, #2563eb 50%, #3b82f6 100%) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
  text-shadow: none !important;
}
.help-center-page header.home-header .logo:hover .brand-wordmark-main {
  filter: drop-shadow(0 4px 12px rgba(37, 99, 235, 0.2)) !important;
}
.help-center-page header.home-header .logo .brand-wordmark::after {
  background: linear-gradient(90deg, rgba(37, 99, 235, 0.05), rgba(37, 99, 235, 0.4), rgba(37, 99, 235, 0.05)) !important;
}