/* ========================================
   Site Footer - 国际化大气风格（终极版）
   手机端：菜单双列展示 + 响应式优化
   ======================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
ul {
  list-style: none;
}
a {
  text-decoration: none;
}
body {
  background-color: #0f172a; /* 可根据页面主背景修改 */
}

/* 补全装饰元素 - 科技感光效/网格背景 */
.mega-footer {
  position: relative;
  width: 100%;
  overflow: hidden;
  z-index: 10;
}
.footer-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.2;
  z-index: -1;
}
.footer-glow-1 {
  top: 0;
  left: 5%;
  width: 400px;
  height: 400px;
  background: #8b5cf6;
  animation: glowPulse 4s ease-in-out infinite alternate;
}
.footer-glow-2 {
  bottom: 0;
  right: 5%;
  width: 350px;
  height: 350px;
  background: #22d3ee;
  animation: glowPulse 4s ease-in-out infinite alternate-reverse;
}

@keyframes glowPulse {
  0% {
    opacity: 0.2;
    transform: scale(1);
  }
  100% {
    opacity: 0.3;
    transform: scale(1.05);
  }
}
.footer-grid-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  z-index: -1;
}

/* 顶部统计栏 */
.footer-stats {
  position: relative;
  background: linear-gradient(135deg, rgba(139,92,246,0.05) 0%, rgba(34,211,238,0.05) 100%);
  border-top: 1px solid rgba(139,92,246,0.15);
  border-bottom: 1px solid rgba(139,92,246,0.15);
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
  overflow: hidden;
  z-index: 2;
}

/* 背景效果 */
.footer-stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 30%, rgba(139,92,246,0.04) 0%, transparent 60%),
              radial-gradient(circle at 80% 70%, rgba(34,211,238,0.04) 0%, transparent 60%),
              linear-gradient(90deg, transparent 0%, rgba(139,92,246,0.01) 50%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}

/* 技术纹理 */
.footer-stats::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,0.03) 1px, transparent 0);
  background-size: 20px 20px;
  pointer-events: none;
  z-index: 0;
}
.footer-stats-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 40px;
  position: relative;
  z-index: 1;
}
.stat-item {
  text-align: center;
  padding: 10px 0;
  flex: 1;
  min-width: 140px;
  transition: all 0.3s ease;
}

.stat-item:hover .stat-number {
  background: linear-gradient(135deg, #a78bfa 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-number {
  font-size: 36px;
  font-weight: 700;
  background: linear-gradient(135deg, #8b5cf6 0%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  font-family: 'Inter', 'Microsoft YaHei', sans-serif;
}

.stat-suffix {
  font-size: 20px;
  background: none;
  -webkit-background-clip: unset;
  -webkit-text-fill-color: #cbd5e1;
  background-clip: unset;
  color: #cbd5e1;
  margin-left: 2px;
}

.stat-label {
  font-size: 13px;
  color: #94a3b8;
  margin-top: 8px;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.stat-divider {
  width: 1px;
  height: 50px;
  background: linear-gradient(180deg, transparent, rgba(139, 92, 246, 0.3), transparent);
  display: block;
}

@media screen and (max-width: 768px) {
  .stat-divider {
    display: none;
  }
}

/* 主页脚核心导航区 - 国际化大气风格 */
.site-footer {
  background: linear-gradient(135deg, #0d1117 0%, #161b22 100%);
  border-top: 1px solid rgba(139,92,246,0.15);
  padding: 100px 0 60px;
  margin-top: 0;
  position: relative;
  z-index: 2;
  width: 100%;
  box-shadow: 0 -8px 32px rgba(0,0,0,0.2);
  overflow: hidden;
}

/* 技术感背景效果 - 国际化风格 */
.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 30%, rgba(139,92,246,0.08) 0%, transparent 60%),
              radial-gradient(circle at 80% 70%, rgba(34,211,238,0.06) 0%, transparent 60%),
              linear-gradient(90deg, transparent 0%, rgba(139,92,246,0.02) 50%, transparent 100%);
  background-size: auto, auto, auto;
  pointer-events: none;
  z-index: -1;
  animation: backgroundShift 15s ease infinite;
}

@keyframes backgroundShift {
  0% {
    background-position: 0% 0%;
  }
  50% {
    background-position: 100% 100%;
  }
  100% {
    background-position: 0% 0%;
  }
}
.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
  box-sizing: border-box;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2.5fr 1fr 1fr 1fr 1fr;
  gap: 80px;
  margin-bottom: 20px;
  width: 100%;
  max-width: 100%;
  position: relative;
  z-index: 1;
}
/* Logo列样式 - 国际化风格 */
.footer-logo {
  display: inline-block;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0;
  background: transparent;
  border-radius: 0;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  box-shadow: none;
}
.footer-logo:hover {
  transform: translateY(-6px) scale(1.05);
  box-shadow: none;
  background: transparent;
}
.footer-logo img {
  height: 56px;
  opacity: 1;
  transition: all 0.3s ease;
}
.footer-logo:hover img {
  transform: scale(1.05);
}
.footer-desc {
  margin: 28px 0 0;
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  line-height: 1.7;
  max-width: 320px;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
.footer-runtime {
  display: inline-block;
  margin-top: 28px;
  padding: 12px 20px;
  color: #c4b5fd;
  font-size: 14px;
  background: linear-gradient(135deg, rgba(139,92,246,0.15), rgba(34,211,238,0.15));
  border-radius: 12px;
  border: 1px solid rgba(139,92,246,0.2);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 500;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.footer-runtime:hover {
  background: linear-gradient(135deg, rgba(139,92,246,0.2), rgba(34,211,238,0.2));
  border-color: rgba(139,92,246,0.4);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(139,92,246,0.2);
}
.footer-runtime strong {
  color: #e9d5ff;
  font-weight: 600;
}

/* 社交媒体图标 - 国际化风格 */
.footer-social {
  margin-top: 36px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.social-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.03));
  color: rgba(255,255,255,0.8);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  border: 1px solid rgba(139,92,246,0.3);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.social-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.6s ease;
}
.social-btn:hover::before {
  left: 100%;
}
.social-btn:hover {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
  color: white;
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 24px rgba(139,92,246,0.3);
  border-color: transparent;
}
.social-btn.email:hover {
  background: linear-gradient(135deg, #ef4444, #dc2626);
}
.social-btn svg {
  width: 20px;
  height: 20px;
  transition: all 0.3s ease;
}
.social-btn:hover svg {
  transform: scale(1.1);
}

/* 导航列通用样式 - 标题+横线+二级菜单 - 国际化风格 */
.footer-col h4 {
  margin: 0 0 32px;
  color: #ffffff;
  font-size: 18px;
  font-weight: 700;
  position: relative;
  padding-bottom: 16px;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, #8b5cf6, #22d3ee);
  border-radius: 2px;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(139,92,246,0.3);
}
.footer-col:hover h4::after {
  width: 100px;
  background: linear-gradient(90deg, #a78bfa, #38bdf8);
}
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-col li {
  margin: 16px 0;
  transition: all 0.3s ease;
}
.footer-col a {
  color: rgba(255,255,255,0.7);
  font-size: 16px;
  text-decoration: none;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-block;
  position: relative;
  padding: 8px 0;
  font-weight: 500;
  border-radius: 4px;
}
.footer-col a:hover {
  color: #a78bfa;
  transform: translateX(8px);
  background: rgba(139,92,246,0.1);
  padding-left: 12px;
  box-shadow: 0 4px 16px rgba(139,92,246,0.2);
}
.footer-col a:hover::before {
  content: '→';
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  color: #8b5cf6;
  font-size: 16px;
  font-weight: 600;
  text-shadow: 0 2px 4px rgba(139,92,246,0.3);
}
.footer-col {
  position: relative;
  transition: all 0.3s ease;
}
.footer-col:hover {
  transform: translateY(-4px);
}

/* 联系方式列样式 - 国际化风格 */
.contact-line {
  color: rgba(255,255,255,0.7);
  font-size: 15px;
  margin: 14px 0;
  line-height: 1.6;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all 0.3s ease;
  padding: 8px 0;
}
.contact-line:hover {
  color: #a78bfa;
  transform: translateX(4px);
}
.contact-line i {
  color: #8b5cf6;
  font-size: 18px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139,92,246,0.1);
  border-radius: 8px;
  transition: all 0.3s ease;
}
.contact-line:hover i {
  background: rgba(139,92,246,0.2);
  transform: scale(1.1);
}
.telegram-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
  padding: 14px 24px;
  color: #ffffff;
  font-size: 15px;
  font-weight: 600;
  background: linear-gradient(135deg, #0ea5e9, #0284c7);
  border-radius: 12px;
  text-decoration: none;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: none;
  box-shadow: 0 4px 16px rgba(14, 165, 233, 0.3);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.telegram-link:hover {
  background: linear-gradient(135deg, #0284c7, #0369a1);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 24px rgba(14, 165, 233, 0.4);
  color: #ffffff;
}
.telegram-link img {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: all 0.3s ease;
}
.telegram-link:hover img {
  transform: scale(1.1) rotate(5deg);
}

/* 订阅表单 - 国际化风格 */
.subscribe-section {
  margin-top: 24px;
  padding: 20px;
  background: rgba(255,255,255,0.03);
  border-radius: 16px;
  border: 1px solid rgba(139,92,246,0.2);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: all 0.3s ease;
}
.subscribe-section:hover {
  border-color: rgba(139,92,246,0.4);
  box-shadow: 0 8px 24px rgba(139,92,246,0.15);
}
.subscribe-section h5 {
  color: #ffffff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  text-align: center;
  letter-spacing: 0.5px;
}
.subscribe-form {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  flex-wrap: wrap;
}
.subscribe-input {
  flex: 1;
  min-width: 200px;
  padding: 14px 20px;
  border: 1px solid rgba(139,92,246,0.2);
  border-radius: 12px;
  font-size: 15px;
  background: rgba(255,255,255,0.05);
  color: rgba(255,255,255,0.8);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 500;
}
.subscribe-input:focus {
  outline: none;
  border-color: #8b5cf6;
  box-shadow: 0 0 0 3px rgba(139,92,246,0.15);
  background: rgba(255,255,255,0.08);
}
.subscribe-input::placeholder {
  color: rgba(255,255,255,0.5);
  font-weight: 400;
}
.subscribe-btn {
  padding: 14px 24px;
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  min-width: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.subscribe-btn:hover {
  background: linear-gradient(135deg, #7c3aed, #6d28d9);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(139,92,246,0.3);
}
.subscribe-btn:active {
  transform: translateY(-1px);
}

/* 底部版权区 - 国际化风格 */
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid rgba(139,92,246,0.1);
  flex-wrap: wrap;
  gap: 30px;
  width: 100%;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}
.footer-bottom::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(139,92,246,0.2), transparent);
  pointer-events: none;
}
.footer-copyright {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  line-height: 1.6;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-weight: 500;
}
.footer-copyright a {
  color: #8b5cf6;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 4px 8px;
  border-radius: 6px;
  font-weight: 600;
}
.footer-copyright a:hover {
  color: #e9d5ff;
  background: rgba(139,92,246,0.1);
  transform: translateY(-2px);
  text-decoration: none;
}
.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid transparent;
}
.footer-links a:hover {
  color: #a78bfa;
  background: rgba(139,92,246,0.1);
  border-color: rgba(139,92,246,0.2);
  transform: translateY(-3px);
}
.footer-bottom-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 30px;
  width: 100%;
}

/* 支付方式图标 - 国际化风格 */
.payment-methods {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-top: 20px;
  flex-wrap: wrap;
}
.payment-methods img {
  height: 32px;
  opacity: 0.7;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 4px;
  background: rgba(255,255,255,0.05);
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.08);
}
.payment-methods img:hover {
  opacity: 1;
  transform: translateY(-4px) scale(1.1);
  background: rgba(255,255,255,0.1);
  border-color: rgba(139,92,246,0.2);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

/* 语言选择器 - 国际化风格 */
.language-selector {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: linear-gradient(135deg, rgba(139,92,246,0.1), rgba(34,211,238,0.1));
  border-radius: 12px;
  border: 1px solid rgba(139,92,246,0.2);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-weight: 600;
}
.language-selector:hover {
  background: linear-gradient(135deg, rgba(139,92,246,0.15), rgba(34,211,238,0.15));
  border-color: rgba(139,92,246,0.4);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(139,92,246,0.2);
}
.language-selector span {
  color: #a78bfa;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.language-selector i {
  color: #8b5cf6;
  font-size: 12px;
  transition: all 0.3s ease;
}
.language-selector:hover i {
  transform: rotate(180deg);
}

/* 置顶按钮 */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-shadow: 0 4px 16px rgba(139,92,246,0.3);
  transition: all 0.3s ease;
  z-index: 9999;
  opacity: 1;
  visibility: visible;
  border: none;
  cursor: pointer;
  pointer-events: auto;
  outline: none;
  -webkit-tap-highlight-color: transparent;
}

.back-to-top:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(139,92,246,0.4);
  background: linear-gradient(135deg, #7c3aed, #6d28d9);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* 响应式适配 */
@media screen and (max-width: 768px) {
  .back-to-top {
    bottom: 25px;
    right: 25px;
    width: 45px;
    height: 45px;
  }
  
  .back-to-top svg {
    width: 18px;
    height: 18px;
  }
}

@media screen and (max-width: 600px) {
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }
  
  .back-to-top svg {
    width: 16px;
    height: 16px;
  }
}

/* ========================================
   响应式适配 - 平板768px / 手机600px
   手机端：终极居中 + 保留所有左对齐/横线设置
   ======================================== */
/* 平板/大屏手机（768px以下）- 少量优化，保障居中 */
@media screen and (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 30px;
  }
  .footer-col:first-child {
    grid-column: 1 / -1;
  }
  .footer-stats-inner {
    gap: 20px;
    padding: 20px 16px;
  }
  .stat-number {
    font-size: 32px;
  }
  .stat-suffix {
    font-size: 18px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 15px;
  }
  .footer-links {
    justify-content: center;
  }
  .subscribe-form {
    flex-direction: column;
  }
  .subscribe-btn {
    width: 100%;
  }
}

/* 手机端（600px以下）- 双列菜单展示 + 国际化大气风格 */
@media screen and (max-width: 600px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin: 0 auto 30px;
    max-width: 100%;
    padding: 0;
  }
  /* LOGO列：跨两列 + 撑满网格宽度 */
  .footer-col:first-child {
    grid-column: 1 / -1;
    width: 100%;
    text-align: center;
    margin-bottom: 32px;
    padding: 0;
  }
  /* 所有菜单列：双列布局 */
  .footer-col {
    width: 100%;
    padding: 28px;
    background: rgba(255,255,255,0.02);
    border-radius: 16px;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-sizing: border-box;
  }
  /* 标题下划线：居中显示 */
  .footer-col h4::after {
    left: 50% !important;
    transform: translateX(-50%) !important;
    width: 50px !important;
  }
  /* 标题/菜单/联系方式：居中对齐 */
  .footer-col h4 {
    padding-left: 0;
    text-align: center;
    font-size: 16px;
    margin-bottom: 24px;
    padding-bottom: 12px;
  }
  .footer-col ul {
    padding-left: 0;
    text-align: center;
  }
  .footer-col li {
    margin: 12px 0;
  }
  .footer-col a {
    font-size: 14px;
    padding: 6px 0;
  }
  .footer-col a:hover {
    transform: none;
    padding-left: 8px;
    background: rgba(139,92,246,0.15);
  }
  .footer-col a:hover::before {
    display: none;
  }
  .contact-line, .telegram-link {
    padding-left: 0;
    justify-content: center;
  }
  /* LOGO/运行天数：居中显示 */
  .footer-logo, .footer-runtime {
    margin: 0 auto;
    display: block;
  }
  .footer-logo {
    margin-bottom: 32px;
    padding: 0;
  }
  .footer-logo img {
    height: 52px;
  }
  .footer-desc {
    margin: 0 auto 28px;
    text-align: center;
    font-size: 14px;
    line-height: 1.6;
  }
  .footer-runtime {
    margin-bottom: 32px;
  }
  .footer-social {
    justify-content: center;
    margin-top: 0;
    margin-bottom: 32px;
    gap: 18px;
  }
  .social-btn {
    width: 56px;
    height: 56px;
    border-radius: 16px;
  }
  .social-btn svg {
    width: 18px;
    height: 18px;
  }
  /* 统计栏字号适配手机 */
  .stat-number {
    font-size: 32px;
  }
  .stat-suffix {
    font-size: 18px;
  }
  .stat-label {
    font-size: 12px;
    letter-spacing: 0.5px;
  }
  /* 手机端内边距/间距优化 */
  .site-footer {
    padding: 60px 0 60px;
  }
  .footer-stats-inner {
    padding: 20px 16px;
    gap: 24px;
  }
  /* 版权区依旧居中，页面收尾美观 */
  .footer-bottom {
    flex-direction: column;
    gap: 32px;
    text-align: center;
    padding-top: 30px;
  }
  .footer-links {
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-bottom: 16px;
  }
  .footer-links a {
    margin: 0 8px;
    font-size: 13px;
    padding: 8px 16px;
    border-radius: 8px;
  }
  .footer-copyright {
    flex-direction: column;
    gap: 16px;
    font-size: 13px;
    padding-bottom: 20px;
  }
  .payment-methods {
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
  }
  .payment-methods img {
    height: 32px;
  }
  .language-selector {
    margin: 0 auto;
    padding: 10px 18px;
    font-size: 14px;
    border-radius: 12px;
  }
  .contact-line i {
    display: flex;
    font-size: 16px;
  }
  .subscribe-form {
    flex-direction: column;
  }
  .subscribe-input {
    min-width: 100%;
    padding: 14px 20px;
    font-size: 14px;
  }
  .subscribe-btn {
    width: 100%;
    padding: 14px 24px;
    font-size: 14px;
  }
}