/* ===== 移动端左侧滑入菜单 ===== */
@media (max-width: 991px) {
  .menu-overlay {
    position: fixed !important;
    top: 0 !important; left: 0 !important;
    width: 100% !important; height: 100% !important;
    background: rgba(0,0,0,0.35) !important;
    z-index: 998 !important;
    will-change: opacity !important;
  }

  body.menu-open {
    overflow: hidden !important; height: 100% !important;
  }

  .main-navigation > div[class*="menu-"] {
    display: none !important;
  }

  .mobile-slide-menu {
    position: fixed !important;
    top: 0 !important; left: 0 !important;
    bottom: 0 !important;
    width: 280px !important; max-width: 80vw !important;
    background: #fff !important;
    z-index: 999 !important;
    overflow-y: auto !important;
    -webkit-overflow-scrolling: touch !important;
    transform: translate3d(-100%, 0, 0) !important;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    box-shadow: 2px 0 25px rgba(0,0,0,0.1) !important;
    will-change: transform !important;
    backface-visibility: hidden !important;
    contain: layout style paint !important;
  }
  body.menu-open .mobile-slide-menu {
    transform: translate3d(0, 0, 0) !important;
  }

  .slide-menu-header {
    padding: 30px 20px 12px;
    text-align: center;
    background: #f5ecfa;
    position: relative;
  }
  .slide-menu-close {
    position: absolute; top: 10px; right: 10px;
    width: 26px; height: 26px;
    border: none; background: rgba(255,255,255,0.6);
    border-radius: 50%; cursor: pointer;
    font-size: 13px; line-height: 26px; color: #aaa; padding: 0;
    z-index: 2;
  }
  .slide-menu-header img {
    width: 60px; height: 60px;
    border-radius: 50%; object-fit: cover;
    border: 3px solid rgba(255,255,255,0.9);
    box-shadow: 0 3px 12px rgba(0,0,0,0.08);
    display: block; margin: 0 auto;
  }
  .slide-menu-header h3 {
    margin: 10px 0 2px;
    font-size: 15px; color: #555; font-weight: 600;
  }
  .slide-menu-header p {
    margin: 0; font-size: 11px; color: #999;
  }

  .mobile-slide-menu ul.menu {
    padding: 0 !important; margin: 0 !important;
    list-style: none !important;
  }
  .mobile-slide-menu ul.menu li {
    display: block !important;
    border-bottom: 1px solid #f3f3f3;
    margin: 0 !important;
  }
  .mobile-slide-menu ul.menu li a {
    padding: 13px 18px !important;
    display: block !important;
    font-size: 13px !important;
    color: #555 !important;
    text-transform: none !important;
    text-decoration: none !important;
  }
  .mobile-slide-menu ul.menu li a:active {
    background: #f7f7f7 !important;
  }

  .mobile-slide-menu ul.menu li.menu-item-has-children > a::after {
    content: '▸'; float: right;
    transition: transform 0.25s;
    color: #ccc; font-size: 11px;
  }
  .mobile-slide-menu ul.menu li.menu-item-has-children > a.open::after {
    transform: rotate(90deg);
  }

  .mobile-slide-menu ul.sub-menu {
    max-height: 0 !important;
    overflow: hidden !important;
    transition: max-height 0.25s ease !important;
    background: #f9f9f9 !important;
    padding-left: 12px !important;
    will-change: max-height !important;
  }
  .mobile-slide-menu ul.sub-menu.open {
    max-height: 500px !important;
  }
  .mobile-slide-menu ul.sub-menu li {
    border-bottom: none !important;
  }
  .mobile-slide-menu ul.sub-menu li a {
    padding: 11px 18px !important;
    font-size: 12px !important;
    color: #777 !important;
  }

  .slide-menu-welcome {
    padding: 10px 14px;
    background: linear-gradient(135deg, #faf5ff, #fff5f8);
    border-top: 1px solid #f0f0f0;
    font-size: 10px; line-height: 1.6;
    color: #999; text-align: center;
  }
  .welcome-text {
    max-height: 180px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .slide-menu-footer {
    padding: 12px 16px;
    text-align: center;
    font-size: 10px; color: #ccc;
    border-top: 1px solid #f0f0f0;
  }
}

/* 文章卡片流畅渐入 */
.blog article, .home article, .archive article {
  animation: cardFadeIn 0.5s ease-out both;
}
.blog article:nth-child(1), .home article:nth-child(1) { animation-delay: 0.05s; }
.blog article:nth-child(2), .home article:nth-child(2) { animation-delay: 0.1s; }
.blog article:nth-child(3), .home article:nth-child(3) { animation-delay: 0.15s; }
.blog article:nth-child(4), .home article:nth-child(4) { animation-delay: 0.2s; }
.blog article:nth-child(5), .home article:nth-child(5) { animation-delay: 0.25s; }

@keyframes cardFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}